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   1 /*
   2  * GLSL pixel and vertex shader implementation
   3  *
   4  * Copyright 2006 Jason Green
   5  * Copyright 2006-2007 Henri Verbeet
   6  * Copyright 2007-2008 Stefan Dösinger for CodeWeavers
   7  * Copyright 2009-2011 Henri Verbeet for CodeWeavers
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  22  */
  23
  24 /*
  25  * D3D shader asm has swizzles on source parameters, and write masks for
  26  * destination parameters. GLSL uses swizzles for both. The result of this is
  27  * that for example "mov dst.xw, src.zyxw" becomes "dst.xw = src.zw" in GLSL.
  28  * Ie, to generate a proper GLSL source swizzle, we need to take the D3D write
  29  * mask for the destination parameter into account.
  30  */
  31
  32 #include "config.h"
  33 #include <limits.h>
  34 #include <stdio.h>
  35 #include "wined3d_private.h"
  36
  37 WINE_DEFAULT_DEBUG_CHANNEL(d3d_shader);
  38 WINE_DECLARE_DEBUG_CHANNEL(d3d_constants);
  39 WINE_DECLARE_DEBUG_CHANNEL(d3d_caps);
  40 WINE_DECLARE_DEBUG_CHANNEL(d3d);
  41
  42 #define WINED3D_GLSL_SAMPLE_PROJECTED   0x1
  43 #define WINED3D_GLSL_SAMPLE_RECT        0x2
  44 #define WINED3D_GLSL_SAMPLE_LOD         0x4
  45 #define WINED3D_GLSL_SAMPLE_GRAD        0x8
  46
  47 struct glsl_dst_param
  48 {
  49     char reg_name[150];
  50     char mask_str[6];
  51 };
  52
  53 struct glsl_src_param
  54 {
  55     char reg_name[150];
  56     char param_str[200];
  57 };
  58
  59 struct glsl_sample_function
  60 {
  61     const char *name;
  62     DWORD coord_mask;
  63 };
  64
  65 enum heap_node_op
  66 {
  67     HEAP_NODE_TRAVERSE_LEFT,
  68     HEAP_NODE_TRAVERSE_RIGHT,
  69     HEAP_NODE_POP,
  70 };
  71
  72 struct constant_entry
  73 {
  74     unsigned int idx;
  75     unsigned int version;
  76 };
  77
  78 struct constant_heap
  79 {
  80     struct constant_entry *entries;
  81     unsigned int *positions;
  82     unsigned int size;
  83 };
  84
  85 /* GLSL shader private data */
  86 struct shader_glsl_priv {
  87     struct wined3d_shader_buffer shader_buffer;
  88     struct wine_rb_tree program_lookup;
  89     struct glsl_shader_prog_link *glsl_program;
  90     struct constant_heap vconst_heap;
  91     struct constant_heap pconst_heap;
  92     unsigned char *stack;
  93     GLhandleARB depth_blt_program_full[tex_type_count];
  94     GLhandleARB depth_blt_program_masked[tex_type_count];
  95     UINT next_constant_version;
  96 };
  97
  98 /* Struct to maintain data about a linked GLSL program */
  99 struct glsl_shader_prog_link {
 100     struct wine_rb_entry        program_lookup_entry;
 101     struct list                 vshader_entry;
 102     struct list                 pshader_entry;
 103     GLhandleARB                 programId;
 104     GLint                       *vuniformF_locations;
 105     GLint                       *puniformF_locations;
 106     GLint                       vuniformI_locations[MAX_CONST_I];
 107     GLint                       puniformI_locations[MAX_CONST_I];
 108     GLint                       posFixup_location;
 109     GLint                       np2Fixup_location;
 110     GLint                       bumpenvmat_location[MAX_TEXTURES];
 111     GLint                       luminancescale_location[MAX_TEXTURES];
 112     GLint                       luminanceoffset_location[MAX_TEXTURES];
 113     GLint                       ycorrection_location;
 114     GLenum                      vertex_color_clamp;
 115     const struct wined3d_shader *vshader;
 116     const struct wined3d_shader *pshader;
 117     struct vs_compile_args      vs_args;
 118     struct ps_compile_args      ps_args;
 119     UINT                        constant_version;
 120     const struct ps_np2fixup_info *np2Fixup_info;
 121 };
 122
 123 struct glsl_program_key
 124 {
 125     const struct wined3d_shader *vshader;
 126     const struct wined3d_shader *pshader;
 127     struct ps_compile_args      ps_args;
 128     struct vs_compile_args      vs_args;
 129 };
 130
 131 struct shader_glsl_ctx_priv {
 132     const struct vs_compile_args    *cur_vs_args;
 133     const struct ps_compile_args    *cur_ps_args;
 134     struct ps_np2fixup_info         *cur_np2fixup_info;
 135 };
 136
 137 struct glsl_ps_compiled_shader
 138 {
 139     struct ps_compile_args          args;
 140     struct ps_np2fixup_info         np2fixup;
 141     GLhandleARB                     prgId;
 142 };
 143
 144 struct glsl_pshader_private
 145 {
 146     struct glsl_ps_compiled_shader  *gl_shaders;
 147     UINT                            num_gl_shaders, shader_array_size;
 148 };
 149
 150 struct glsl_vs_compiled_shader
 151 {
 152     struct vs_compile_args          args;
 153     GLhandleARB                     prgId;
 154 };
 155
 156 struct glsl_vshader_private
 157 {
 158     struct glsl_vs_compiled_shader  *gl_shaders;
 159     UINT                            num_gl_shaders, shader_array_size;
 160 };
 161
 162 static const char *debug_gl_shader_type(GLenum type)
 163 {
 164     switch (type)
 165     {
 166 #define WINED3D_TO_STR(u) case u: return #u
 167         WINED3D_TO_STR(GL_VERTEX_SHADER_ARB);
 168         WINED3D_TO_STR(GL_GEOMETRY_SHADER_ARB);
 169         WINED3D_TO_STR(GL_FRAGMENT_SHADER_ARB);
 170 #undef WINED3D_TO_STR
 171         default:
 172             return wine_dbg_sprintf("UNKNOWN(%#x)", type);
 173     }
 174 }
 175
 176 /* Extract a line from the info log.
 177  * Note that this modifies the source string. */
 178 static char *get_info_log_line(char **ptr)
 179 {
 180     char *p, *q;
 181
 182     p = *ptr;
 183     if (!(q = strstr(p, "\n")))
 184     {
 185         if (!*p) return NULL;
 186         *ptr += strlen(p);
 187         return p;
 188     }
 189     *q = '\0';
 190     *ptr = q + 1;
 191
 192     return p;
 193 }
 194
 195 /** Prints the GLSL info log which will contain error messages if they exist */
 196 /* GL locking is done by the caller */
 197 static void print_glsl_info_log(const struct wined3d_gl_info *gl_info, GLhandleARB obj)
 198 {
 199     int infologLength = 0;
 200     char *infoLog;
 201
 202     if (!WARN_ON(d3d_shader) && !FIXME_ON(d3d_shader))
 203         return;
 204
 205     GL_EXTCALL(glGetObjectParameterivARB(obj,
 206                GL_OBJECT_INFO_LOG_LENGTH_ARB,
 207                &infologLength));
 208
 209     /* A size of 1 is just a null-terminated string, so the log should be bigger than
 210      * that if there are errors. */
 211     if (infologLength > 1)
 212     {
 213         char *ptr, *line;
 214
 215         infoLog = HeapAlloc(GetProcessHeap(), 0, infologLength);
 216         /* The info log is supposed to be zero-terminated, but at least some
 217          * versions of fglrx don't terminate the string properly. The reported
 218          * length does include the terminator, so explicitly set it to zero
 219          * here. */
 220         infoLog[infologLength - 1] = 0;
 221         GL_EXTCALL(glGetInfoLogARB(obj, infologLength, NULL, infoLog));
 222
 223         ptr = infoLog;
 224         if (gl_info->quirks & WINED3D_QUIRK_INFO_LOG_SPAM)
 225         {
 226             WARN("Info log received from GLSL shader #%u:\n", obj);
 227             while ((line = get_info_log_line(&ptr))) WARN("    %s\n", line);
 228         }
 229         else
 230         {
 231             FIXME("Info log received from GLSL shader #%u:\n", obj);
 232             while ((line = get_info_log_line(&ptr))) FIXME("    %s\n", line);
 233         }
 234         HeapFree(GetProcessHeap(), 0, infoLog);
 235     }
 236 }
 237
 238 /* GL locking is done by the caller. */
 239 static void shader_glsl_compile(const struct wined3d_gl_info *gl_info, GLhandleARB shader, const char *src)
 240 {
 241     TRACE("Compiling shader object %u.\n", shader);
 242     GL_EXTCALL(glShaderSourceARB(shader, 1, &src, NULL));
 243     checkGLcall("glShaderSourceARB");
 244     GL_EXTCALL(glCompileShaderARB(shader));
 245     checkGLcall("glCompileShaderARB");
 246     print_glsl_info_log(gl_info, shader);
 247 }
 248
 249 /* GL locking is done by the caller. */
 250 static void shader_glsl_dump_program_source(const struct wined3d_gl_info *gl_info, GLhandleARB program)
 251 {
 252     GLint i, object_count, source_size = -1;
 253     GLhandleARB *objects;
 254     char *source = NULL;
 255
 256     GL_EXTCALL(glGetObjectParameterivARB(program, GL_OBJECT_ATTACHED_OBJECTS_ARB, &object_count));
 257     objects = HeapAlloc(GetProcessHeap(), 0, object_count * sizeof(*objects));
 258     if (!objects)
 259     {
 260         ERR("Failed to allocate object array memory.\n");
 261         return;
 262     }
 263
 264     GL_EXTCALL(glGetAttachedObjectsARB(program, object_count, NULL, objects));
 265     for (i = 0; i < object_count; ++i)
 266     {
 267         char *ptr, *line;
 268         GLint tmp;
 269
 270         GL_EXTCALL(glGetObjectParameterivARB(objects[i], GL_OBJECT_SHADER_SOURCE_LENGTH_ARB, &tmp));
 271
 272         if (source_size < tmp)
 273         {
 274             HeapFree(GetProcessHeap(), 0, source);
 275
 276             source = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, tmp);
 277             if (!source)
 278             {
 279                 ERR("Failed to allocate %d bytes for shader source.\n", tmp);
 280                 HeapFree(GetProcessHeap(), 0, objects);
 281                 return;
 282             }
 283             source_size = tmp;
 284         }
 285
 286         FIXME("Object %u:\n", objects[i]);
 287         GL_EXTCALL(glGetObjectParameterivARB(objects[i], GL_OBJECT_SUBTYPE_ARB, &tmp));
 288         FIXME("    GL_OBJECT_SUBTYPE_ARB: %s.\n", debug_gl_shader_type(tmp));
 289         GL_EXTCALL(glGetObjectParameterivARB(objects[i], GL_OBJECT_COMPILE_STATUS_ARB, &tmp));
 290         FIXME("    GL_OBJECT_COMPILE_STATUS_ARB: %d.\n", tmp);
 291         FIXME("\n");
 292
 293         ptr = source;
 294         GL_EXTCALL(glGetShaderSourceARB(objects[i], source_size, NULL, source));
 295         while ((line = get_info_log_line(&ptr))) FIXME("    %s\n", line);
 296         FIXME("\n");
 297     }
 298
 299     HeapFree(GetProcessHeap(), 0, source);
 300     HeapFree(GetProcessHeap(), 0, objects);
 301 }
 302
 303 /* GL locking is done by the caller. */
 304 static void shader_glsl_validate_link(const struct wined3d_gl_info *gl_info, GLhandleARB program)
 305 {
 306     GLint tmp;
 307
 308     if (!TRACE_ON(d3d_shader) && !FIXME_ON(d3d_shader)) return;
 309
 310     GL_EXTCALL(glGetObjectParameterivARB(program, GL_OBJECT_TYPE_ARB, &tmp));
 311     if (tmp == GL_PROGRAM_OBJECT_ARB)
 312     {
 313         GL_EXTCALL(glGetObjectParameterivARB(program, GL_OBJECT_LINK_STATUS_ARB, &tmp));
 314         if (!tmp)
 315         {
 316             FIXME("Program %u link status invalid.\n", program);
 317             shader_glsl_dump_program_source(gl_info, program);
 318         }
 319     }
 320
 321     print_glsl_info_log(gl_info, program);
 322 }
 323
 324 /**
 325  * Loads (pixel shader) samplers
 326  */
 327 /* GL locking is done by the caller */
 328 static void shader_glsl_load_psamplers(const struct wined3d_gl_info *gl_info,
 329         const DWORD *tex_unit_map, GLhandleARB programId)
 330 {
 331     GLint name_loc;
 332     int i;
 333     char sampler_name[20];
 334
 335     for (i = 0; i < MAX_FRAGMENT_SAMPLERS; ++i) {
 336         snprintf(sampler_name, sizeof(sampler_name), "Psampler%d", i);
 337         name_loc = GL_EXTCALL(glGetUniformLocationARB(programId, sampler_name));
 338         if (name_loc != -1) {
 339             DWORD mapped_unit = tex_unit_map[i];
 340             if (mapped_unit != WINED3D_UNMAPPED_STAGE && mapped_unit < gl_info->limits.fragment_samplers)
 341             {
 342                 TRACE("Loading %s for texture %d\n", sampler_name, mapped_unit);
 343                 GL_EXTCALL(glUniform1iARB(name_loc, mapped_unit));
 344                 checkGLcall("glUniform1iARB");
 345             } else {
 346                 ERR("Trying to load sampler %s on unsupported unit %d\n", sampler_name, mapped_unit);
 347             }
 348         }
 349     }
 350 }
 351
 352 /* GL locking is done by the caller */
 353 static void shader_glsl_load_vsamplers(const struct wined3d_gl_info *gl_info,
 354         const DWORD *tex_unit_map, GLhandleARB programId)
 355 {
 356     GLint name_loc;
 357     char sampler_name[20];
 358     int i;
 359
 360     for (i = 0; i < MAX_VERTEX_SAMPLERS; ++i) {
 361         snprintf(sampler_name, sizeof(sampler_name), "Vsampler%d", i);
 362         name_loc = GL_EXTCALL(glGetUniformLocationARB(programId, sampler_name));
 363         if (name_loc != -1) {
 364             DWORD mapped_unit = tex_unit_map[MAX_FRAGMENT_SAMPLERS + i];
 365             if (mapped_unit != WINED3D_UNMAPPED_STAGE && mapped_unit < gl_info->limits.combined_samplers)
 366             {
 367                 TRACE("Loading %s for texture %d\n", sampler_name, mapped_unit);
 368                 GL_EXTCALL(glUniform1iARB(name_loc, mapped_unit));
 369                 checkGLcall("glUniform1iARB");
 370             } else {
 371                 ERR("Trying to load sampler %s on unsupported unit %d\n", sampler_name, mapped_unit);
 372             }
 373         }
 374     }
 375 }
 376
 377 /* GL locking is done by the caller */
 378 static inline void walk_constant_heap(const struct wined3d_gl_info *gl_info, const float *constants,
 379         const GLint *constant_locations, const struct constant_heap *heap, unsigned char *stack, DWORD version)
 380 {
 381     int stack_idx = 0;
 382     unsigned int heap_idx = 1;
 383     unsigned int idx;
 384
 385     if (heap->entries[heap_idx].version <= version) return;
 386
 387     idx = heap->entries[heap_idx].idx;
 388     if (constant_locations[idx] != -1) GL_EXTCALL(glUniform4fvARB(constant_locations[idx], 1, &constants[idx * 4]));
 389     stack[stack_idx] = HEAP_NODE_TRAVERSE_LEFT;
 390
 391     while (stack_idx >= 0)
 392     {
 393         /* Note that we fall through to the next case statement. */
 394         switch(stack[stack_idx])
 395         {
 396             case HEAP_NODE_TRAVERSE_LEFT:
 397             {
 398                 unsigned int left_idx = heap_idx << 1;
 399                 if (left_idx < heap->size && heap->entries[left_idx].version > version)
 400                 {
 401                     heap_idx = left_idx;
 402                     idx = heap->entries[heap_idx].idx;
 403                     if (constant_locations[idx] != -1)
 404                         GL_EXTCALL(glUniform4fvARB(constant_locations[idx], 1, &constants[idx * 4]));
 405
 406                     stack[stack_idx++] = HEAP_NODE_TRAVERSE_RIGHT;
 407                     stack[stack_idx] = HEAP_NODE_TRAVERSE_LEFT;
 408                     break;
 409                 }
 410             }
 411
 412             case HEAP_NODE_TRAVERSE_RIGHT:
 413             {
 414                 unsigned int right_idx = (heap_idx << 1) + 1;
 415                 if (right_idx < heap->size && heap->entries[right_idx].version > version)
 416                 {
 417                     heap_idx = right_idx;
 418                     idx = heap->entries[heap_idx].idx;
 419                     if (constant_locations[idx] != -1)
 420                         GL_EXTCALL(glUniform4fvARB(constant_locations[idx], 1, &constants[idx * 4]));
 421
 422                     stack[stack_idx++] = HEAP_NODE_POP;
 423                     stack[stack_idx] = HEAP_NODE_TRAVERSE_LEFT;
 424                     break;
 425                 }
 426             }
 427
 428             case HEAP_NODE_POP:
 429                 heap_idx >>= 1;
 430                 --stack_idx;
 431                 break;
 432         }
 433     }
 434     checkGLcall("walk_constant_heap()");
 435 }
 436
 437 /* GL locking is done by the caller */
 438 static inline void apply_clamped_constant(const struct wined3d_gl_info *gl_info, GLint location, const GLfloat *data)
 439 {
 440     GLfloat clamped_constant[4];
 441
 442     if (location == -1) return;
 443
 444     clamped_constant[0] = data[0] < -1.0f ? -1.0f : data[0] > 1.0f ? 1.0f : data[0];
 445     clamped_constant[1] = data[1] < -1.0f ? -1.0f : data[1] > 1.0f ? 1.0f : data[1];
 446     clamped_constant[2] = data[2] < -1.0f ? -1.0f : data[2] > 1.0f ? 1.0f : data[2];
 447     clamped_constant[3] = data[3] < -1.0f ? -1.0f : data[3] > 1.0f ? 1.0f : data[3];
 448
 449     GL_EXTCALL(glUniform4fvARB(location, 1, clamped_constant));
 450 }
 451
 452 /* GL locking is done by the caller */
 453 static inline void walk_constant_heap_clamped(const struct wined3d_gl_info *gl_info, const float *constants,
 454         const GLint *constant_locations, const struct constant_heap *heap, unsigned char *stack, DWORD version)
 455 {
 456     int stack_idx = 0;
 457     unsigned int heap_idx = 1;
 458     unsigned int idx;
 459
 460     if (heap->entries[heap_idx].version <= version) return;
 461
 462     idx = heap->entries[heap_idx].idx;
 463     apply_clamped_constant(gl_info, constant_locations[idx], &constants[idx * 4]);
 464     stack[stack_idx] = HEAP_NODE_TRAVERSE_LEFT;
 465
 466     while (stack_idx >= 0)
 467     {
 468         /* Note that we fall through to the next case statement. */
 469         switch(stack[stack_idx])
 470         {
 471             case HEAP_NODE_TRAVERSE_LEFT:
 472             {
 473                 unsigned int left_idx = heap_idx << 1;
 474                 if (left_idx < heap->size && heap->entries[left_idx].version > version)
 475                 {
 476                     heap_idx = left_idx;
 477                     idx = heap->entries[heap_idx].idx;
 478                     apply_clamped_constant(gl_info, constant_locations[idx], &constants[idx * 4]);
 479
 480                     stack[stack_idx++] = HEAP_NODE_TRAVERSE_RIGHT;
 481                     stack[stack_idx] = HEAP_NODE_TRAVERSE_LEFT;
 482                     break;
 483                 }
 484             }
 485
 486             case HEAP_NODE_TRAVERSE_RIGHT:
 487             {
 488                 unsigned int right_idx = (heap_idx << 1) + 1;
 489                 if (right_idx < heap->size && heap->entries[right_idx].version > version)
 490                 {
 491                     heap_idx = right_idx;
 492                     idx = heap->entries[heap_idx].idx;
 493                     apply_clamped_constant(gl_info, constant_locations[idx], &constants[idx * 4]);
 494
 495                     stack[stack_idx++] = HEAP_NODE_POP;
 496                     stack[stack_idx] = HEAP_NODE_TRAVERSE_LEFT;
 497                     break;
 498                 }
 499             }
 500
 501             case HEAP_NODE_POP:
 502                 heap_idx >>= 1;
 503                 --stack_idx;
 504                 break;
 505         }
 506     }
 507     checkGLcall("walk_constant_heap_clamped()");
 508 }
 509
 510 /* Loads floating point constants (aka uniforms) into the currently set GLSL program. */
 511 /* GL locking is done by the caller */
 512 static void shader_glsl_load_constantsF(const struct wined3d_shader *shader, const struct wined3d_gl_info *gl_info,
 513         const float *constants, const GLint *constant_locations, const struct constant_heap *heap,
 514         unsigned char *stack, UINT version)
 515 {
 516     const struct wined3d_shader_lconst *lconst;
 517
 518     /* 1.X pshaders have the constants clamped to [-1;1] implicitly. */
 519     if (shader->reg_maps.shader_version.major == 1
 520             && shader_is_pshader_version(shader->reg_maps.shader_version.type))
 521         walk_constant_heap_clamped(gl_info, constants, constant_locations, heap, stack, version);
 522     else
 523         walk_constant_heap(gl_info, constants, constant_locations, heap, stack, version);
 524
 525     if (!shader->load_local_constsF)
 526     {
 527         TRACE("No need to load local float constants for this shader\n");
 528         return;
 529     }
 530
 531     /* Immediate constants are clamped to [-1;1] at shader creation time if needed */
 532     LIST_FOR_EACH_ENTRY(lconst, &shader->constantsF, struct wined3d_shader_lconst, entry)
 533     {
 534         GLint location = constant_locations[lconst->idx];
 535         /* We found this uniform name in the program - go ahead and send the data */
 536         if (location != -1) GL_EXTCALL(glUniform4fvARB(location, 1, (const GLfloat *)lconst->value));
 537     }
 538     checkGLcall("glUniform4fvARB()");
 539 }
 540
 541 /* Loads integer constants (aka uniforms) into the currently set GLSL program. */
 542 /* GL locking is done by the caller */
 543 static void shader_glsl_load_constantsI(const struct wined3d_shader *shader, const struct wined3d_gl_info *gl_info,
 544         const GLint locations[MAX_CONST_I], const int *constants, WORD constants_set)
 545 {
 546     unsigned int i;
 547     struct list* ptr;
 548
 549     for (i = 0; constants_set; constants_set >>= 1, ++i)
 550     {
 551         if (!(constants_set & 1)) continue;
 552
 553         TRACE_(d3d_constants)("Loading constants %u: %i, %i, %i, %i\n",
 554                 i, constants[i*4], constants[i*4+1], constants[i*4+2], constants[i*4+3]);
 555
 556         /* We found this uniform name in the program - go ahead and send the data */
 557         GL_EXTCALL(glUniform4ivARB(locations[i], 1, &constants[i*4]));
 558         checkGLcall("glUniform4ivARB");
 559     }
 560
 561     /* Load immediate constants */
 562     ptr = list_head(&shader->constantsI);
 563     while (ptr)
 564     {
 565         const struct wined3d_shader_lconst *lconst = LIST_ENTRY(ptr, const struct wined3d_shader_lconst, entry);
 566         unsigned int idx = lconst->idx;
 567         const GLint *values = (const GLint *)lconst->value;
 568
 569         TRACE_(d3d_constants)("Loading local constants %i: %i, %i, %i, %i\n", idx,
 570             values[0], values[1], values[2], values[3]);
 571
 572         /* We found this uniform name in the program - go ahead and send the data */
 573         GL_EXTCALL(glUniform4ivARB(locations[idx], 1, values));
 574         checkGLcall("glUniform4ivARB");
 575         ptr = list_next(&shader->constantsI, ptr);
 576     }
 577 }
 578
 579 /* Loads boolean constants (aka uniforms) into the currently set GLSL program. */
 580 /* GL locking is done by the caller */
 581 static void shader_glsl_load_constantsB(const struct wined3d_shader *shader, const struct wined3d_gl_info *gl_info,
 582         GLhandleARB programId, const BOOL *constants, WORD constants_set)
 583 {
 584     GLint tmp_loc;
 585     unsigned int i;
 586     char tmp_name[8];
 587     const char *prefix;
 588     struct list* ptr;
 589
 590     switch (shader->reg_maps.shader_version.type)
 591     {
 592         case WINED3D_SHADER_TYPE_VERTEX:
 593             prefix = "VB";
 594             break;
 595
 596         case WINED3D_SHADER_TYPE_GEOMETRY:
 597             prefix = "GB";
 598             break;
 599
 600         case WINED3D_SHADER_TYPE_PIXEL:
 601             prefix = "PB";
 602             break;
 603
 604         default:
 605             FIXME("Unknown shader type %#x.\n",
 606                     shader->reg_maps.shader_version.type);
 607             prefix = "UB";
 608             break;
 609     }
 610
 611     /* TODO: Benchmark and see if it would be beneficial to store the
 612      * locations of the constants to avoid looking up each time */
 613     for (i = 0; constants_set; constants_set >>= 1, ++i)
 614     {
 615         if (!(constants_set & 1)) continue;
 616
 617         TRACE_(d3d_constants)("Loading constants %i: %i;\n", i, constants[i]);
 618
 619         /* TODO: Benchmark and see if it would be beneficial to store the
 620          * locations of the constants to avoid looking up each time */
 621         snprintf(tmp_name, sizeof(tmp_name), "%s[%i]", prefix, i);
 622         tmp_loc = GL_EXTCALL(glGetUniformLocationARB(programId, tmp_name));
 623         if (tmp_loc != -1)
 624         {
 625             /* We found this uniform name in the program - go ahead and send the data */
 626             GL_EXTCALL(glUniform1ivARB(tmp_loc, 1, &constants[i]));
 627             checkGLcall("glUniform1ivARB");
 628         }
 629     }
 630
 631     /* Load immediate constants */
 632     ptr = list_head(&shader->constantsB);
 633     while (ptr)
 634     {
 635         const struct wined3d_shader_lconst *lconst = LIST_ENTRY(ptr, const struct wined3d_shader_lconst, entry);
 636         unsigned int idx = lconst->idx;
 637         const GLint *values = (const GLint *)lconst->value;
 638
 639         TRACE_(d3d_constants)("Loading local constants %i: %i\n", idx, values[0]);
 640
 641         snprintf(tmp_name, sizeof(tmp_name), "%s[%i]", prefix, idx);
 642         tmp_loc = GL_EXTCALL(glGetUniformLocationARB(programId, tmp_name));
 643         if (tmp_loc != -1) {
 644             /* We found this uniform name in the program - go ahead and send the data */
 645             GL_EXTCALL(glUniform1ivARB(tmp_loc, 1, values));
 646             checkGLcall("glUniform1ivARB");
 647         }
 648         ptr = list_next(&shader->constantsB, ptr);
 649     }
 650 }
 651
 652 static void reset_program_constant_version(struct wine_rb_entry *entry, void *context)
 653 {
 654     WINE_RB_ENTRY_VALUE(entry, struct glsl_shader_prog_link, program_lookup_entry)->constant_version = 0;
 655 }
 656
 657 /**
 658  * Loads the texture dimensions for NP2 fixup into the currently set GLSL program.
 659  */
 660 /* GL locking is done by the caller (state handler) */
 661 static void shader_glsl_load_np2fixup_constants(void *shader_priv,
 662         const struct wined3d_gl_info *gl_info, const struct wined3d_state *state)
 663 {
 664     struct shader_glsl_priv *glsl_priv = shader_priv;
 665     const struct glsl_shader_prog_link *prog = glsl_priv->glsl_program;
 666
 667     /* No GLSL program set - nothing to do. */
 668     if (!prog) return;
 669
 670     /* NP2 texcoord fixup is (currently) only done for pixelshaders. */
 671     if (!use_ps(state)) return;
 672
 673     if (prog->ps_args.np2_fixup && prog->np2Fixup_location != -1)
 674     {
 675         UINT i;
 676         UINT fixup = prog->ps_args.np2_fixup;
 677         GLfloat np2fixup_constants[4 * MAX_FRAGMENT_SAMPLERS];
 678
 679         for (i = 0; fixup; fixup >>= 1, ++i)
 680         {
 681             const struct wined3d_texture *tex = state->textures[i];
 682             const unsigned char idx = prog->np2Fixup_info->idx[i];
 683             GLfloat *tex_dim = &np2fixup_constants[(idx >> 1) * 4];
 684
 685             if (!tex)
 686             {
 687                 ERR("Nonexistent texture is flagged for NP2 texcoord fixup.\n");
 688                 continue;
 689             }
 690
 691             if (idx % 2)
 692             {
 693                 tex_dim[2] = tex->pow2_matrix[0];
 694                 tex_dim[3] = tex->pow2_matrix[5];
 695             }
 696             else
 697             {
 698                 tex_dim[0] = tex->pow2_matrix[0];
 699                 tex_dim[1] = tex->pow2_matrix[5];
 700             }
 701         }
 702
 703         GL_EXTCALL(glUniform4fvARB(prog->np2Fixup_location, prog->np2Fixup_info->num_consts, np2fixup_constants));
 704     }
 705 }
 706
 707 /**
 708  * Loads the app-supplied constants into the currently set GLSL program.
 709  */
 710 /* GL locking is done by the caller (state handler) */
 711 static void shader_glsl_load_constants(const struct wined3d_context *context,
 712         char usePixelShader, char useVertexShader)
 713 {
 714     const struct wined3d_gl_info *gl_info = context->gl_info;
 715     struct wined3d_device *device = context->swapchain->device;
 716     struct wined3d_stateblock *stateBlock = device->stateBlock;
 717     const struct wined3d_state *state = &stateBlock->state;
 718     struct shader_glsl_priv *priv = device->shader_priv;
 719     float position_fixup[4];
 720
 721     GLhandleARB programId;
 722     struct glsl_shader_prog_link *prog = priv->glsl_program;
 723     UINT constant_version;
 724     int i;
 725
 726     if (!prog) {
 727         /* No GLSL program set - nothing to do. */
 728         return;
 729     }
 730     programId = prog->programId;
 731     constant_version = prog->constant_version;
 732
 733     if (useVertexShader)
 734     {
 735         const struct wined3d_shader *vshader = state->vertex_shader;
 736
 737         /* Load DirectX 9 float constants/uniforms for vertex shader */
 738         shader_glsl_load_constantsF(vshader, gl_info, state->vs_consts_f,
 739                 prog->vuniformF_locations, &priv->vconst_heap, priv->stack, constant_version);
 740
 741         /* Load DirectX 9 integer constants/uniforms for vertex shader */
 742         shader_glsl_load_constantsI(vshader, gl_info, prog->vuniformI_locations, state->vs_consts_i,
 743                 stateBlock->changed.vertexShaderConstantsI & vshader->reg_maps.integer_constants);
 744
 745         /* Load DirectX 9 boolean constants/uniforms for vertex shader */
 746         shader_glsl_load_constantsB(vshader, gl_info, programId, state->vs_consts_b,
 747                 stateBlock->changed.vertexShaderConstantsB & vshader->reg_maps.boolean_constants);
 748
 749         /* Upload the position fixup params */
 750         shader_get_position_fixup(context, state, position_fixup);
 751         GL_EXTCALL(glUniform4fvARB(prog->posFixup_location, 1, position_fixup));
 752         checkGLcall("glUniform4fvARB");
 753     }
 754
 755     if (usePixelShader)
 756     {
 757         const struct wined3d_shader *pshader = state->pixel_shader;
 758
 759         /* Load DirectX 9 float constants/uniforms for pixel shader */
 760         shader_glsl_load_constantsF(pshader, gl_info, state->ps_consts_f,
 761                 prog->puniformF_locations, &priv->pconst_heap, priv->stack, constant_version);
 762
 763         /* Load DirectX 9 integer constants/uniforms for pixel shader */
 764         shader_glsl_load_constantsI(pshader, gl_info, prog->puniformI_locations, state->ps_consts_i,
 765                 stateBlock->changed.pixelShaderConstantsI & pshader->reg_maps.integer_constants);
 766
 767         /* Load DirectX 9 boolean constants/uniforms for pixel shader */
 768         shader_glsl_load_constantsB(pshader, gl_info, programId, state->ps_consts_b,
 769                 stateBlock->changed.pixelShaderConstantsB & pshader->reg_maps.boolean_constants);
 770
 771         /* Upload the environment bump map matrix if needed. The needsbumpmat member specifies the texture stage to load the matrix from.
 772          * It can't be 0 for a valid texbem instruction.
 773          */
 774         for(i = 0; i < MAX_TEXTURES; i++) {
 775             const float *data;
 776
 777             if(prog->bumpenvmat_location[i] == -1) continue;
 778
 779             data = (const float *)&state->texture_states[i][WINED3DTSS_BUMPENVMAT00];
 780             GL_EXTCALL(glUniformMatrix2fvARB(prog->bumpenvmat_location[i], 1, 0, data));
 781             checkGLcall("glUniformMatrix2fvARB");
 782
 783             /* texbeml needs the luminance scale and offset too. If texbeml
 784              * is used, needsbumpmat is set too, so we can check that in the
 785              * needsbumpmat check. */
 786             if (prog->luminancescale_location[i] != -1)
 787             {
 788                 const GLfloat *scale = (const GLfloat *)&state->texture_states[i][WINED3DTSS_BUMPENVLSCALE];
 789                 const GLfloat *offset = (const GLfloat *)&state->texture_states[i][WINED3DTSS_BUMPENVLOFFSET];
 790
 791                 GL_EXTCALL(glUniform1fvARB(prog->luminancescale_location[i], 1, scale));
 792                 checkGLcall("glUniform1fvARB");
 793                 GL_EXTCALL(glUniform1fvARB(prog->luminanceoffset_location[i], 1, offset));
 794                 checkGLcall("glUniform1fvARB");
 795             }
 796         }
 797
 798         if (prog->ycorrection_location != -1)
 799         {
 800             float correction_params[4];
 801
 802             if (context->render_offscreen)
 803             {
 804                 correction_params[0] = 0.0f;
 805                 correction_params[1] = 1.0f;
 806             } else {
 807                 /* position is window relative, not viewport relative */
 808                 correction_params[0] = (float) context->current_rt->resource.height;
 809                 correction_params[1] = -1.0f;
 810             }
 811             GL_EXTCALL(glUniform4fvARB(prog->ycorrection_location, 1, correction_params));
 812         }
 813     }
 814
 815     if (priv->next_constant_version == UINT_MAX)
 816     {
 817         TRACE("Max constant version reached, resetting to 0.\n");
 818         wine_rb_for_each_entry(&priv->program_lookup, reset_program_constant_version, NULL);
 819         priv->next_constant_version = 1;
 820     }
 821     else
 822     {
 823         prog->constant_version = priv->next_constant_version++;
 824     }
 825 }
 826
 827 static void update_heap_entry(const struct constant_heap *heap, unsigned int idx,
 828         unsigned int heap_idx, DWORD new_version)
 829 {
 830     struct constant_entry *entries = heap->entries;
 831     unsigned int *positions = heap->positions;
 832     unsigned int parent_idx;
 833
 834     while (heap_idx > 1)
 835     {
 836         parent_idx = heap_idx >> 1;
 837
 838         if (new_version <= entries[parent_idx].version) break;
 839
 840         entries[heap_idx] = entries[parent_idx];
 841         positions[entries[parent_idx].idx] = heap_idx;
 842         heap_idx = parent_idx;
 843     }
 844
 845     entries[heap_idx].version = new_version;
 846     entries[heap_idx].idx = idx;
 847     positions[idx] = heap_idx;
 848 }
 849
 850 static void shader_glsl_update_float_vertex_constants(struct wined3d_device *device, UINT start, UINT count)
 851 {
 852     struct shader_glsl_priv *priv = device->shader_priv;
 853     struct constant_heap *heap = &priv->vconst_heap;
 854     UINT i;
 855
 856     for (i = start; i < count + start; ++i)
 857     {
 858         if (!device->stateBlock->changed.vertexShaderConstantsF[i])
 859             update_heap_entry(heap, i, heap->size++, priv->next_constant_version);
 860         else
 861             update_heap_entry(heap, i, heap->positions[i], priv->next_constant_version);
 862     }
 863 }
 864
 865 static void shader_glsl_update_float_pixel_constants(struct wined3d_device *device, UINT start, UINT count)
 866 {
 867     struct shader_glsl_priv *priv = device->shader_priv;
 868     struct constant_heap *heap = &priv->pconst_heap;
 869     UINT i;
 870
 871     for (i = start; i < count + start; ++i)
 872     {
 873         if (!device->stateBlock->changed.pixelShaderConstantsF[i])
 874             update_heap_entry(heap, i, heap->size++, priv->next_constant_version);
 875         else
 876             update_heap_entry(heap, i, heap->positions[i], priv->next_constant_version);
 877     }
 878 }
 879
 880 static unsigned int vec4_varyings(DWORD shader_major, const struct wined3d_gl_info *gl_info)
 881 {
 882     unsigned int ret = gl_info->limits.glsl_varyings / 4;
 883     /* 4.0 shaders do not write clip coords because d3d10 does not support user clipplanes */
 884     if(shader_major > 3) return ret;
 885
 886     /* 3.0 shaders may need an extra varying for the clip coord on some cards(mostly dx10 ones) */
 887     if (gl_info->quirks & WINED3D_QUIRK_GLSL_CLIP_VARYING) ret -= 1;
 888     return ret;
 889 }
 890
 891 /** Generate the variable & register declarations for the GLSL output target */
 892 static void shader_generate_glsl_declarations(const struct wined3d_context *context,
 893         struct wined3d_shader_buffer *buffer, const struct wined3d_shader *shader,
 894         const struct wined3d_shader_reg_maps *reg_maps, const struct shader_glsl_ctx_priv *ctx_priv)
 895 {
 896     const struct wined3d_state *state = &shader->device->stateBlock->state;
 897     const struct ps_compile_args *ps_args = ctx_priv->cur_ps_args;
 898     const struct wined3d_gl_info *gl_info = context->gl_info;
 899     const struct wined3d_fb_state *fb = &shader->device->fb;
 900     unsigned int i, extra_constants_needed = 0;
 901     const struct wined3d_shader_lconst *lconst;
 902     DWORD map;
 903
 904     /* There are some minor differences between pixel and vertex shaders */
 905     char pshader = shader_is_pshader_version(reg_maps->shader_version.type);
 906     char prefix = pshader ? 'P' : 'V';
 907
 908     /* Prototype the subroutines */
 909     for (i = 0, map = reg_maps->labels; map; map >>= 1, ++i)
 910     {
 911         if (map & 1) shader_addline(buffer, "void subroutine%u();\n", i);
 912     }
 913
 914     /* Declare the constants (aka uniforms) */
 915     if (shader->limits.constant_float > 0)
 916     {
 917         unsigned max_constantsF;
 918         /* Unless the shader uses indirect addressing, always declare the maximum array size and ignore that we need some
 919          * uniforms privately. E.g. if GL supports 256 uniforms, and we need 2 for the pos fixup and immediate values, still
 920          * declare VC[256]. If the shader needs more uniforms than we have it won't work in any case. If it uses less, the
 921          * compiler will figure out which uniforms are really used and strip them out. This allows a shader to use c255 on
 922          * a dx9 card, as long as it doesn't also use all the other constants.
 923          *
 924          * If the shader uses indirect addressing the compiler must assume that all declared uniforms are used. In this case,
 925          * declare only the amount that we're assured to have.
 926          *
 927          * Thus we run into problems in these two cases:
 928          * 1) The shader really uses more uniforms than supported
 929          * 2) The shader uses indirect addressing, less constants than supported, but uses a constant index > #supported consts
 930          */
 931         if (pshader)
 932         {
 933             /* No indirect addressing here. */
 934             max_constantsF = gl_info->limits.glsl_ps_float_constants;
 935         }
 936         else
 937         {
 938             if (reg_maps->usesrelconstF)
 939             {
 940                 /* Subtract the other potential uniforms from the max
 941                  * available (bools, ints, and 1 row of projection matrix).
 942                  * Subtract another uniform for immediate values, which have
 943                  * to be loaded via uniform by the driver as well. The shader
 944                  * code only uses 0.5, 2.0, 1.0, 128 and -128 in vertex
 945                  * shader code, so one vec4 should be enough. (Unfortunately
 946                  * the Nvidia driver doesn't store 128 and -128 in one float).
 947                  *
 948                  * Writing gl_ClipVertex requires one uniform for each
 949                  * clipplane as well. */
 950                 max_constantsF = gl_info->limits.glsl_vs_float_constants - 3;
 951                 if(ctx_priv->cur_vs_args->clip_enabled)
 952                 {
 953                     max_constantsF -= gl_info->limits.clipplanes;
 954                 }
 955                 max_constantsF -= count_bits(reg_maps->integer_constants);
 956                 /* Strictly speaking a bool only uses one scalar, but the nvidia(Linux) compiler doesn't pack them properly,
 957                  * so each scalar requires a full vec4. We could work around this by packing the booleans ourselves, but
 958                  * for now take this into account when calculating the number of available constants
 959                  */
 960                 max_constantsF -= count_bits(reg_maps->boolean_constants);
 961                 /* Set by driver quirks in directx.c */
 962                 max_constantsF -= gl_info->reserved_glsl_constants;
 963             }
 964             else
 965             {
 966                 max_constantsF = gl_info->limits.glsl_vs_float_constants;
 967             }
 968         }
 969         max_constantsF = min(shader->limits.constant_float, max_constantsF);
 970         shader_addline(buffer, "uniform vec4 %cC[%u];\n", prefix, max_constantsF);
 971     }
 972
 973     /* Always declare the full set of constants, the compiler can remove the
 974      * unused ones because d3d doesn't (yet) support indirect int and bool
 975      * constant addressing. This avoids problems if the app uses e.g. i0 and i9. */
 976     if (shader->limits.constant_int > 0 && reg_maps->integer_constants)
 977         shader_addline(buffer, "uniform ivec4 %cI[%u];\n", prefix, shader->limits.constant_int);
 978
 979     if (shader->limits.constant_bool > 0 && reg_maps->boolean_constants)
 980         shader_addline(buffer, "uniform bool %cB[%u];\n", prefix, shader->limits.constant_bool);
 981
 982     if (!pshader)
 983     {
 984         shader_addline(buffer, "uniform vec4 posFixup;\n");
 985         shader_addline(buffer, "void order_ps_input(in vec4[%u]);\n", MAX_REG_OUTPUT);
 986     }
 987     else
 988     {
 989         for (i = 0, map = reg_maps->bumpmat; map; map >>= 1, ++i)
 990         {
 991             if (!(map & 1)) continue;
 992
 993             shader_addline(buffer, "uniform mat2 bumpenvmat%d;\n", i);
 994
 995             if (reg_maps->luminanceparams & (1 << i))
 996             {
 997                 shader_addline(buffer, "uniform float luminancescale%d;\n", i);
 998                 shader_addline(buffer, "uniform float luminanceoffset%d;\n", i);
 999                 extra_constants_needed++;
1000             }
1001
1002             extra_constants_needed++;
1003         }
1004
1005         if (ps_args->srgb_correction)
1006         {
1007             shader_addline(buffer, "const vec4 srgb_const0 = vec4(%.8e, %.8e, %.8e, %.8e);\n",
1008                     srgb_pow, srgb_mul_high, srgb_sub_high, srgb_mul_low);
1009             shader_addline(buffer, "const vec4 srgb_const1 = vec4(%.8e, 0.0, 0.0, 0.0);\n",
1010                     srgb_cmp);
1011         }
1012         if (reg_maps->vpos || reg_maps->usesdsy)
1013         {
1014             if (shader->limits.constant_float + extra_constants_needed
1015                     + 1 < gl_info->limits.glsl_ps_float_constants)
1016             {
1017                 shader_addline(buffer, "uniform vec4 ycorrection;\n");
1018                 extra_constants_needed++;
1019             }
1020             else
1021             {
1022                 /* This happens because we do not have proper tracking of the constant registers that are
1023                  * actually used, only the max limit of the shader version
1024                  */
1025                 FIXME("Cannot find a free uniform for vpos correction params\n");
1026                 shader_addline(buffer, "const vec4 ycorrection = vec4(%f, %f, 0.0, 0.0);\n",
1027                         context->render_offscreen ? 0.0f : fb->render_targets[0]->resource.height,
1028                         context->render_offscreen ? 1.0f : -1.0f);
1029             }
1030             shader_addline(buffer, "vec4 vpos;\n");
1031         }
1032     }
1033
1034     /* Declare texture samplers */
1035     for (i = 0; i < shader->limits.sampler; ++i)
1036     {
1037         if (reg_maps->sampler_type[i])
1038         {
1039             const struct wined3d_texture *texture;
1040
1041             switch (reg_maps->sampler_type[i])
1042             {
1043                 case WINED3DSTT_1D:
1044                     if (pshader && ps_args->shadow & (1 << i))
1045                         shader_addline(buffer, "uniform sampler1DShadow %csampler%u;\n", prefix, i);
1046                     else
1047                         shader_addline(buffer, "uniform sampler1D %csampler%u;\n", prefix, i);
1048                     break;
1049                 case WINED3DSTT_2D:
1050                     texture = state->textures[i];
1051                     if (pshader && ps_args->shadow & (1 << i))
1052                     {
1053                         if (texture && texture->target == GL_TEXTURE_RECTANGLE_ARB)
1054                             shader_addline(buffer, "uniform sampler2DRectShadow %csampler%u;\n", prefix, i);
1055                         else
1056                             shader_addline(buffer, "uniform sampler2DShadow %csampler%u;\n", prefix, i);
1057                     }
1058                     else
1059                     {
1060                         if (texture && texture->target == GL_TEXTURE_RECTANGLE_ARB)
1061                             shader_addline(buffer, "uniform sampler2DRect %csampler%u;\n", prefix, i);
1062                         else
1063                             shader_addline(buffer, "uniform sampler2D %csampler%u;\n", prefix, i);
1064                     }
1065                     break;
1066                 case WINED3DSTT_CUBE:
1067                     if (pshader && ps_args->shadow & (1 << i)) FIXME("Unsupported Cube shadow sampler.\n");
1068                     shader_addline(buffer, "uniform samplerCube %csampler%u;\n", prefix, i);
1069                     break;
1070                 case WINED3DSTT_VOLUME:
1071                     if (pshader && ps_args->shadow & (1 << i)) FIXME("Unsupported 3D shadow sampler.\n");
1072                     shader_addline(buffer, "uniform sampler3D %csampler%u;\n", prefix, i);
1073                     break;
1074                 default:
1075                     shader_addline(buffer, "uniform unsupported_sampler %csampler%u;\n", prefix, i);
1076                     FIXME("Unrecognized sampler type: %#x\n", reg_maps->sampler_type[i]);
1077                     break;
1078             }
1079         }
1080     }
1081
1082     /* Declare uniforms for NP2 texcoord fixup:
1083      * This is NOT done inside the loop that declares the texture samplers since the NP2 fixup code
1084      * is currently only used for the GeforceFX series and when forcing the ARB_npot extension off.
1085      * Modern cards just skip the code anyway, so put it inside a separate loop. */
1086     if (pshader && ps_args->np2_fixup) {
1087
1088         struct ps_np2fixup_info* const fixup = ctx_priv->cur_np2fixup_info;
1089         UINT cur = 0;
1090
1091         /* NP2/RECT textures in OpenGL use texcoords in the range [0,width]x[0,height]
1092          * while D3D has them in the (normalized) [0,1]x[0,1] range.
1093          * samplerNP2Fixup stores texture dimensions and is updated through
1094          * shader_glsl_load_np2fixup_constants when the sampler changes. */
1095
1096         for (i = 0; i < shader->limits.sampler; ++i)
1097         {
1098             if (reg_maps->sampler_type[i])
1099             {
1100                 if (!(ps_args->np2_fixup & (1 << i))) continue;
1101
1102                 if (WINED3DSTT_2D != reg_maps->sampler_type[i]) {
1103                     FIXME("Non-2D texture is flagged for NP2 texcoord fixup.\n");
1104                     continue;
1105                 }
1106
1107                 fixup->idx[i] = cur++;
1108             }
1109         }
1110
1111         fixup->num_consts = (cur + 1) >> 1;
1112         shader_addline(buffer, "uniform vec4 %csamplerNP2Fixup[%u];\n", prefix, fixup->num_consts);
1113     }
1114
1115     /* Declare address variables */
1116     for (i = 0, map = reg_maps->address; map; map >>= 1, ++i)
1117     {
1118         if (map & 1) shader_addline(buffer, "ivec4 A%u;\n", i);
1119     }
1120
1121     /* Declare texture coordinate temporaries and initialize them */
1122     for (i = 0, map = reg_maps->texcoord; map; map >>= 1, ++i)
1123     {
1124         if (map & 1) shader_addline(buffer, "vec4 T%u = gl_TexCoord[%u];\n", i, i);
1125     }
1126
1127     /* Declare input register varyings. Only pixel shader, vertex shaders have that declared in the
1128      * helper function shader that is linked in at link time
1129      */
1130     if (pshader && reg_maps->shader_version.major >= 3)
1131     {
1132         if (use_vs(state))
1133         {
1134             shader_addline(buffer, "varying vec4 IN[%u];\n", vec4_varyings(reg_maps->shader_version.major, gl_info));
1135         } else {
1136             /* TODO: Write a replacement shader for the fixed function vertex pipeline, so this isn't needed.
1137              * For fixed function vertex processing + 3.0 pixel shader we need a separate function in the
1138              * pixel shader that reads the fixed function color into the packed input registers.
1139              */
1140             shader_addline(buffer, "vec4 IN[%u];\n", vec4_varyings(reg_maps->shader_version.major, gl_info));
1141         }
1142     }
1143
1144     /* Declare output register temporaries */
1145     if (shader->limits.packed_output)
1146         shader_addline(buffer, "vec4 OUT[%u];\n", shader->limits.packed_output);
1147
1148     /* Declare temporary variables */
1149     for (i = 0, map = reg_maps->temporary; map; map >>= 1, ++i)
1150     {
1151         if (map & 1) shader_addline(buffer, "vec4 R%u;\n", i);
1152     }
1153
1154     /* Declare attributes */
1155     if (reg_maps->shader_version.type == WINED3D_SHADER_TYPE_VERTEX)
1156     {
1157         for (i = 0, map = reg_maps->input_registers; map; map >>= 1, ++i)
1158         {
1159             if (map & 1) shader_addline(buffer, "attribute vec4 attrib%i;\n", i);
1160         }
1161     }
1162
1163     /* Declare loop registers aLx */
1164     for (i = 0; i < reg_maps->loop_depth; i++) {
1165         shader_addline(buffer, "int aL%u;\n", i);
1166         shader_addline(buffer, "int tmpInt%u;\n", i);
1167     }
1168
1169     /* Temporary variables for matrix operations */
1170     shader_addline(buffer, "vec4 tmp0;\n");
1171     shader_addline(buffer, "vec4 tmp1;\n");
1172
1173     /* Local constants use a different name so they can be loaded once at shader link time
1174      * They can't be hardcoded into the shader text via LC = {x, y, z, w}; because the
1175      * float -> string conversion can cause precision loss.
1176      */
1177     if (!shader->load_local_constsF)
1178     {
1179         LIST_FOR_EACH_ENTRY(lconst, &shader->constantsF, struct wined3d_shader_lconst, entry)
1180         {
1181             shader_addline(buffer, "uniform vec4 %cLC%u;\n", prefix, lconst->idx);
1182         }
1183     }
1184
1185     /* Start the main program */
1186     shader_addline(buffer, "void main() {\n");
1187     if(pshader && reg_maps->vpos) {
1188         /* DirectX apps expect integer values, while OpenGL drivers add approximately 0.5. This causes
1189          * off-by-one problems as spotted by the vPos d3d9 visual test. Unfortunately the ATI cards do
1190          * not add exactly 0.5, but rather something like 0.49999999 or 0.50000001, which still causes
1191          * precision troubles when we just subtract 0.5.
1192          *
1193          * To deal with that just floor() the position. This will eliminate the fraction on all cards.
1194          *
1195          * TODO: Test how that behaves with multisampling once we can enable multisampling in winex11.
1196          *
1197          * An advantage of floor is that it works even if the driver doesn't add 1/2. It is somewhat
1198          * questionable if 1.5, 2.5, ... are the proper values to return in gl_FragCoord, even though
1199          * coordinates specify the pixel centers instead of the pixel corners. This code will behave
1200          * correctly on drivers that returns integer values.
1201          */
1202         shader_addline(buffer, "vpos = floor(vec4(0, ycorrection[0], 0, 0) + gl_FragCoord * vec4(1, ycorrection[1], 1, 1));\n");
1203     }
1204 }
1205
1206 /*****************************************************************************
1207  * Functions to generate GLSL strings from DirectX Shader bytecode begin here.
1208  *
1209  * For more information, see http://wiki.winehq.org/DirectX-Shaders
1210  ****************************************************************************/
1211
1212 /* Prototypes */
1213 static void shader_glsl_add_src_param(const struct wined3d_shader_instruction *ins,
1214         const struct wined3d_shader_src_param *wined3d_src, DWORD mask, struct glsl_src_param *glsl_src);
1215
1216 /** Used for opcode modifiers - They multiply the result by the specified amount */
1217 static const char * const shift_glsl_tab[] = {
1218     "",           /*  0 (none) */
1219     "2.0 * ",     /*  1 (x2)   */
1220     "4.0 * ",     /*  2 (x4)   */
1221     "8.0 * ",     /*  3 (x8)   */
1222     "16.0 * ",    /*  4 (x16)  */
1223     "32.0 * ",    /*  5 (x32)  */
1224     "",           /*  6 (x64)  */
1225     "",           /*  7 (x128) */
1226     "",           /*  8 (d256) */
1227     "",           /*  9 (d128) */
1228     "",           /* 10 (d64)  */
1229     "",           /* 11 (d32)  */
1230     "0.0625 * ",  /* 12 (d16)  */
1231     "0.125 * ",   /* 13 (d8)   */
1232     "0.25 * ",    /* 14 (d4)   */
1233     "0.5 * "      /* 15 (d2)   */
1234 };
1235
1236 /* Generate a GLSL parameter that does the input modifier computation and return the input register/mask to use */
1237 static void shader_glsl_gen_modifier(enum wined3d_shader_src_modifier src_modifier,
1238         const char *in_reg, const char *in_regswizzle, char *out_str)
1239 {
1240     out_str[0] = 0;
1241
1242     switch (src_modifier)
1243     {
1244     case WINED3DSPSM_DZ: /* Need to handle this in the instructions itself (texld & texcrd). */
1245     case WINED3DSPSM_DW:
1246     case WINED3DSPSM_NONE:
1247         sprintf(out_str, "%s%s", in_reg, in_regswizzle);
1248         break;
1249     case WINED3DSPSM_NEG:
1250         sprintf(out_str, "-%s%s", in_reg, in_regswizzle);
1251         break;
1252     case WINED3DSPSM_NOT:
1253         sprintf(out_str, "!%s%s", in_reg, in_regswizzle);
1254         break;
1255     case WINED3DSPSM_BIAS:
1256         sprintf(out_str, "(%s%s - vec4(0.5)%s)", in_reg, in_regswizzle, in_regswizzle);
1257         break;
1258     case WINED3DSPSM_BIASNEG:
1259         sprintf(out_str, "-(%s%s - vec4(0.5)%s)", in_reg, in_regswizzle, in_regswizzle);
1260         break;
1261     case WINED3DSPSM_SIGN:
1262         sprintf(out_str, "(2.0 * (%s%s - 0.5))", in_reg, in_regswizzle);
1263         break;
1264     case WINED3DSPSM_SIGNNEG:
1265         sprintf(out_str, "-(2.0 * (%s%s - 0.5))", in_reg, in_regswizzle);
1266         break;
1267     case WINED3DSPSM_COMP:
1268         sprintf(out_str, "(1.0 - %s%s)", in_reg, in_regswizzle);
1269         break;
1270     case WINED3DSPSM_X2:
1271         sprintf(out_str, "(2.0 * %s%s)", in_reg, in_regswizzle);
1272         break;
1273     case WINED3DSPSM_X2NEG:
1274         sprintf(out_str, "-(2.0 * %s%s)", in_reg, in_regswizzle);
1275         break;
1276     case WINED3DSPSM_ABS:
1277         sprintf(out_str, "abs(%s%s)", in_reg, in_regswizzle);
1278         break;
1279     case WINED3DSPSM_ABSNEG:
1280         sprintf(out_str, "-abs(%s%s)", in_reg, in_regswizzle);
1281         break;
1282     default:
1283         FIXME("Unhandled modifier %u\n", src_modifier);
1284         sprintf(out_str, "%s%s", in_reg, in_regswizzle);
1285     }
1286 }
1287
1288 /** Writes the GLSL variable name that corresponds to the register that the
1289  * DX opcode parameter is trying to access */
1290 static void shader_glsl_get_register_name(const struct wined3d_shader_register *reg,
1291         char *register_name, BOOL *is_color, const struct wined3d_shader_instruction *ins)
1292 {
1293     /* oPos, oFog and oPts in D3D */
1294     static const char * const hwrastout_reg_names[] = {"OUT[10]", "OUT[11].x", "OUT[11].y"};
1295
1296     const struct wined3d_shader *shader = ins->ctx->shader;
1297     const struct wined3d_shader_reg_maps *reg_maps = ins->ctx->reg_maps;
1298     const struct wined3d_gl_info *gl_info = ins->ctx->gl_info;
1299     char pshader = shader_is_pshader_version(reg_maps->shader_version.type);
1300
1301     *is_color = FALSE;
1302
1303     switch (reg->type)
1304     {
1305         case WINED3DSPR_TEMP:
1306             sprintf(register_name, "R%u", reg->idx);
1307             break;
1308
1309         case WINED3DSPR_INPUT:
1310             /* vertex shaders */
1311             if (!pshader)
1312             {
1313                 struct shader_glsl_ctx_priv *priv = ins->ctx->backend_data;
1314                 if (priv->cur_vs_args->swizzle_map & (1 << reg->idx)) *is_color = TRUE;
1315                 sprintf(register_name, "attrib%u", reg->idx);
1316                 break;
1317             }
1318
1319             /* pixel shaders >= 3.0 */
1320             if (reg_maps->shader_version.major >= 3)
1321             {
1322                 DWORD idx = shader->u.ps.input_reg_map[reg->idx];
1323                 unsigned int in_count = vec4_varyings(reg_maps->shader_version.major, gl_info);
1324
1325                 if (reg->rel_addr)
1326                 {
1327                     struct glsl_src_param rel_param;
1328
1329                     shader_glsl_add_src_param(ins, reg->rel_addr, WINED3DSP_WRITEMASK_0, &rel_param);
1330
1331                     /* Removing a + 0 would be an obvious optimization, but macos doesn't see the NOP
1332                      * operation there */
1333                     if (idx)
1334                     {
1335                         if (shader->u.ps.declared_in_count > in_count)
1336                         {
1337                             sprintf(register_name,
1338                                     "((%s + %u) > %d ? (%s + %u) > %d ? gl_SecondaryColor : gl_Color : IN[%s + %u])",
1339                                     rel_param.param_str, idx, in_count - 1, rel_param.param_str, idx, in_count,
1340                                     rel_param.param_str, idx);
1341                         }
1342                         else
1343                         {
1344                             sprintf(register_name, "IN[%s + %u]", rel_param.param_str, idx);
1345                         }
1346                     }
1347                     else
1348                     {
1349                         if (shader->u.ps.declared_in_count > in_count)
1350                         {
1351                             sprintf(register_name, "((%s) > %d ? (%s) > %d ? gl_SecondaryColor : gl_Color : IN[%s])",
1352                                     rel_param.param_str, in_count - 1, rel_param.param_str, in_count,
1353                                     rel_param.param_str);
1354                         }
1355                         else
1356                         {
1357                             sprintf(register_name, "IN[%s]", rel_param.param_str);
1358                         }
1359                     }
1360                 }
1361                 else
1362                 {
1363                     if (idx == in_count) sprintf(register_name, "gl_Color");
1364                     else if (idx == in_count + 1) sprintf(register_name, "gl_SecondaryColor");
1365                     else sprintf(register_name, "IN[%u]", idx);
1366                 }
1367             }
1368             else
1369             {
1370                 if (!reg->idx) strcpy(register_name, "gl_Color");
1371                 else strcpy(register_name, "gl_SecondaryColor");
1372                 break;
1373             }
1374             break;
1375
1376         case WINED3DSPR_CONST:
1377             {
1378                 const char prefix = pshader ? 'P' : 'V';
1379
1380                 /* Relative addressing */
1381                 if (reg->rel_addr)
1382                 {
1383                     struct glsl_src_param rel_param;
1384                     shader_glsl_add_src_param(ins, reg->rel_addr, WINED3DSP_WRITEMASK_0, &rel_param);
1385                     if (reg->idx) sprintf(register_name, "%cC[%s + %u]", prefix, rel_param.param_str, reg->idx);
1386                     else sprintf(register_name, "%cC[%s]", prefix, rel_param.param_str);
1387                 }
1388                 else
1389                 {
1390                     if (shader_constant_is_local(shader, reg->idx))
1391                         sprintf(register_name, "%cLC%u", prefix, reg->idx);
1392                     else
1393                         sprintf(register_name, "%cC[%u]", prefix, reg->idx);
1394                 }
1395             }
1396             break;
1397
1398         case WINED3DSPR_CONSTINT:
1399             if (pshader) sprintf(register_name, "PI[%u]", reg->idx);
1400             else sprintf(register_name, "VI[%u]", reg->idx);
1401             break;
1402
1403         case WINED3DSPR_CONSTBOOL:
1404             if (pshader) sprintf(register_name, "PB[%u]", reg->idx);
1405             else sprintf(register_name, "VB[%u]", reg->idx);
1406             break;
1407
1408         case WINED3DSPR_TEXTURE: /* case WINED3DSPR_ADDR: */
1409             if (pshader) sprintf(register_name, "T%u", reg->idx);
1410             else sprintf(register_name, "A%u", reg->idx);
1411             break;
1412
1413         case WINED3DSPR_LOOP:
1414             sprintf(register_name, "aL%u", ins->ctx->loop_state->current_reg - 1);
1415             break;
1416
1417         case WINED3DSPR_SAMPLER:
1418             if (pshader) sprintf(register_name, "Psampler%u", reg->idx);
1419             else sprintf(register_name, "Vsampler%u", reg->idx);
1420             break;
1421
1422         case WINED3DSPR_COLOROUT:
1423             if (reg->idx >= gl_info->limits.buffers)
1424                 WARN("Write to render target %u, only %d supported.\n", reg->idx, gl_info->limits.buffers);
1425
1426             sprintf(register_name, "gl_FragData[%u]", reg->idx);
1427             break;
1428
1429         case WINED3DSPR_RASTOUT:
1430             sprintf(register_name, "%s", hwrastout_reg_names[reg->idx]);
1431             break;
1432
1433         case WINED3DSPR_DEPTHOUT:
1434             sprintf(register_name, "gl_FragDepth");
1435             break;
1436
1437         case WINED3DSPR_ATTROUT:
1438             if (!reg->idx) sprintf(register_name, "OUT[8]");
1439             else sprintf(register_name, "OUT[9]");
1440             break;
1441
1442         case WINED3DSPR_TEXCRDOUT:
1443             /* Vertex shaders >= 3.0: WINED3DSPR_OUTPUT */
1444             sprintf(register_name, "OUT[%u]", reg->idx);
1445             break;
1446
1447         case WINED3DSPR_MISCTYPE:
1448             if (!reg->idx)
1449             {
1450                 /* vPos */
1451                 sprintf(register_name, "vpos");
1452             }
1453             else if (reg->idx == 1)
1454             {
1455                 /* Note that gl_FrontFacing is a bool, while vFace is
1456                  * a float for which the sign determines front/back */
1457                 sprintf(register_name, "(gl_FrontFacing ? 1.0 : -1.0)");
1458             }
1459             else
1460             {
1461                 FIXME("Unhandled misctype register %d\n", reg->idx);
1462                 sprintf(register_name, "unrecognized_register");
1463             }
1464             break;
1465
1466         case WINED3DSPR_IMMCONST:
1467             switch (reg->immconst_type)
1468             {
1469                 case WINED3D_IMMCONST_SCALAR:
1470                     sprintf(register_name, "%.8e", *(const float *)reg->immconst_data);
1471                     break;
1472
1473                 case WINED3D_IMMCONST_VEC4:
1474                     sprintf(register_name, "vec4(%.8e, %.8e, %.8e, %.8e)",
1475                             *(const float *)&reg->immconst_data[0], *(const float *)&reg->immconst_data[1],
1476                             *(const float *)&reg->immconst_data[2], *(const float *)&reg->immconst_data[3]);
1477                     break;
1478
1479                 default:
1480                     FIXME("Unhandled immconst type %#x\n", reg->immconst_type);
1481                     sprintf(register_name, "<unhandled_immconst_type %#x>", reg->immconst_type);
1482             }
1483             break;
1484
1485         default:
1486             FIXME("Unhandled register name Type(%d)\n", reg->type);
1487             sprintf(register_name, "unrecognized_register");
1488             break;
1489     }
1490 }
1491
1492 static void shader_glsl_write_mask_to_str(DWORD write_mask, char *str)
1493 {
1494     *str++ = '.';
1495     if (write_mask & WINED3DSP_WRITEMASK_0) *str++ = 'x';
1496     if (write_mask & WINED3DSP_WRITEMASK_1) *str++ = 'y';
1497     if (write_mask & WINED3DSP_WRITEMASK_2) *str++ = 'z';
1498     if (write_mask & WINED3DSP_WRITEMASK_3) *str++ = 'w';
1499     *str = '\0';
1500 }
1501
1502 /* Get the GLSL write mask for the destination register */
1503 static DWORD shader_glsl_get_write_mask(const struct wined3d_shader_dst_param *param, char *write_mask)
1504 {
1505     DWORD mask = param->write_mask;
1506
1507     if (shader_is_scalar(&param->reg))
1508     {
1509         mask = WINED3DSP_WRITEMASK_0;
1510         *write_mask = '\0';
1511     }
1512     else
1513     {
1514         shader_glsl_write_mask_to_str(mask, write_mask);
1515     }
1516
1517     return mask;
1518 }
1519
1520 static unsigned int shader_glsl_get_write_mask_size(DWORD write_mask) {
1521     unsigned int size = 0;
1522
1523     if (write_mask & WINED3DSP_WRITEMASK_0) ++size;
1524     if (write_mask & WINED3DSP_WRITEMASK_1) ++size;
1525     if (write_mask & WINED3DSP_WRITEMASK_2) ++size;
1526     if (write_mask & WINED3DSP_WRITEMASK_3) ++size;
1527
1528     return size;
1529 }
1530
1531 static void shader_glsl_swizzle_to_str(const DWORD swizzle, BOOL fixup, DWORD mask, char *str)
1532 {
1533     /* For registers of type WINED3DDECLTYPE_D3DCOLOR, data is stored as "bgra",
1534      * but addressed as "rgba". To fix this we need to swap the register's x
1535      * and z components. */
1536     const char *swizzle_chars = fixup ? "zyxw" : "xyzw";
1537
1538     *str++ = '.';
1539     /* swizzle bits fields: wwzzyyxx */
1540     if (mask & WINED3DSP_WRITEMASK_0) *str++ = swizzle_chars[swizzle & 0x03];
1541     if (mask & WINED3DSP_WRITEMASK_1) *str++ = swizzle_chars[(swizzle >> 2) & 0x03];
1542     if (mask & WINED3DSP_WRITEMASK_2) *str++ = swizzle_chars[(swizzle >> 4) & 0x03];
1543     if (mask & WINED3DSP_WRITEMASK_3) *str++ = swizzle_chars[(swizzle >> 6) & 0x03];
1544     *str = '\0';
1545 }
1546
1547 static void shader_glsl_get_swizzle(const struct wined3d_shader_src_param *param,
1548         BOOL fixup, DWORD mask, char *swizzle_str)
1549 {
1550     if (shader_is_scalar(&param->reg))
1551         *swizzle_str = '\0';
1552     else
1553         shader_glsl_swizzle_to_str(param->swizzle, fixup, mask, swizzle_str);
1554 }
1555
1556 /* From a given parameter token, generate the corresponding GLSL string.
1557  * Also, return the actual register name and swizzle in case the
1558  * caller needs this information as well. */
1559 static void shader_glsl_add_src_param(const struct wined3d_shader_instruction *ins,
1560         const struct wined3d_shader_src_param *wined3d_src, DWORD mask, struct glsl_src_param *glsl_src)
1561 {
1562     BOOL is_color = FALSE;
1563     char swizzle_str[6];
1564
1565     glsl_src->reg_name[0] = '\0';
1566     glsl_src->param_str[0] = '\0';
1567     swizzle_str[0] = '\0';
1568
1569     shader_glsl_get_register_name(&wined3d_src->reg, glsl_src->reg_name, &is_color, ins);
1570     shader_glsl_get_swizzle(wined3d_src, is_color, mask, swizzle_str);
1571     shader_glsl_gen_modifier(wined3d_src->modifiers, glsl_src->reg_name, swizzle_str, glsl_src->param_str);
1572 }
1573
1574 /* From a given parameter token, generate the corresponding GLSL string.
1575  * Also, return the actual register name and swizzle in case the
1576  * caller needs this information as well. */
1577 static DWORD shader_glsl_add_dst_param(const struct wined3d_shader_instruction *ins,
1578         const struct wined3d_shader_dst_param *wined3d_dst, struct glsl_dst_param *glsl_dst)
1579 {
1580     BOOL is_color = FALSE;
1581
1582     glsl_dst->mask_str[0] = '\0';
1583     glsl_dst->reg_name[0] = '\0';
1584
1585     shader_glsl_get_register_name(&wined3d_dst->reg, glsl_dst->reg_name, &is_color, ins);
1586     return shader_glsl_get_write_mask(wined3d_dst, glsl_dst->mask_str);
1587 }
1588
1589 /* Append the destination part of the instruction to the buffer, return the effective write mask */
1590 static DWORD shader_glsl_append_dst_ext(struct wined3d_shader_buffer *buffer,
1591         const struct wined3d_shader_instruction *ins, const struct wined3d_shader_dst_param *dst)
1592 {
1593     struct glsl_dst_param glsl_dst;
1594     DWORD mask;
1595
1596     mask = shader_glsl_add_dst_param(ins, dst, &glsl_dst);
1597     if (mask) shader_addline(buffer, "%s%s = %s(", glsl_dst.reg_name, glsl_dst.mask_str, shift_glsl_tab[dst->shift]);
1598
1599     return mask;
1600 }
1601
1602 /* Append the destination part of the instruction to the buffer, return the effective write mask */
1603 static DWORD shader_glsl_append_dst(struct wined3d_shader_buffer *buffer, const struct wined3d_shader_instruction *ins)
1604 {
1605     return shader_glsl_append_dst_ext(buffer, ins, &ins->dst[0]);
1606 }
1607
1608 /** Process GLSL instruction modifiers */
1609 static void shader_glsl_add_instruction_modifiers(const struct wined3d_shader_instruction *ins)
1610 {
1611     struct glsl_dst_param dst_param;
1612     DWORD modifiers;
1613
1614     if (!ins->dst_count) return;
1615
1616     modifiers = ins->dst[0].modifiers;
1617     if (!modifiers) return;
1618
1619     shader_glsl_add_dst_param(ins, &ins->dst[0], &dst_param);
1620
1621     if (modifiers & WINED3DSPDM_SATURATE)
1622     {
1623         /* _SAT means to clamp the value of the register to between 0 and 1 */
1624         shader_addline(ins->ctx->buffer, "%s%s = clamp(%s%s, 0.0, 1.0);\n", dst_param.reg_name,
1625                 dst_param.mask_str, dst_param.reg_name, dst_param.mask_str);
1626     }
1627
1628     if (modifiers & WINED3DSPDM_MSAMPCENTROID)
1629     {
1630         FIXME("_centroid modifier not handled\n");
1631     }
1632
1633     if (modifiers & WINED3DSPDM_PARTIALPRECISION)
1634     {
1635         /* MSDN says this modifier can be safely ignored, so that's what we'll do. */
1636     }
1637 }
1638
1639 static const char *shader_glsl_get_rel_op(enum wined3d_shader_rel_op op)
1640 {
1641     switch (op)
1642     {
1643         case WINED3D_SHADER_REL_OP_GT: return ">";
1644         case WINED3D_SHADER_REL_OP_EQ: return "==";
1645         case WINED3D_SHADER_REL_OP_GE: return ">=";
1646         case WINED3D_SHADER_REL_OP_LT: return "<";
1647         case WINED3D_SHADER_REL_OP_NE: return "!=";
1648         case WINED3D_SHADER_REL_OP_LE: return "<=";
1649         default:
1650             FIXME("Unrecognized operator %#x.\n", op);
1651             return "(\?\?)";
1652     }
1653 }
1654
1655 static void shader_glsl_get_sample_function(const struct wined3d_shader_context *ctx,
1656         DWORD sampler_idx, DWORD flags, struct glsl_sample_function *sample_function)
1657 {
1658     enum wined3d_sampler_texture_type sampler_type = ctx->reg_maps->sampler_type[sampler_idx];
1659     const struct wined3d_gl_info *gl_info = ctx->gl_info;
1660     BOOL shadow = shader_is_pshader_version(ctx->reg_maps->shader_version.type)
1661             && (((const struct shader_glsl_ctx_priv *)ctx->backend_data)->cur_ps_args->shadow & (1 << sampler_idx));
1662     BOOL projected = flags & WINED3D_GLSL_SAMPLE_PROJECTED;
1663     BOOL texrect = flags & WINED3D_GLSL_SAMPLE_RECT;
1664     BOOL lod = flags & WINED3D_GLSL_SAMPLE_LOD;
1665     BOOL grad = flags & WINED3D_GLSL_SAMPLE_GRAD;
1666
1667     /* Note that there's no such thing as a projected cube texture. */
1668     switch(sampler_type) {
1669         case WINED3DSTT_1D:
1670             if (shadow)
1671             {
1672                 if (lod)
1673                 {
1674                     sample_function->name = projected ? "shadow1DProjLod" : "shadow1DLod";
1675                 }
1676                 else if (grad)
1677                 {
1678                     if (gl_info->supported[EXT_GPU_SHADER4])
1679                         sample_function->name = projected ? "shadow1DProjGrad" : "shadow1DGrad";
1680                     else if (gl_info->supported[ARB_SHADER_TEXTURE_LOD])
1681                         sample_function->name = projected ? "shadow1DProjGradARB" : "shadow1DGradARB";
1682                     else
1683                     {
1684                         FIXME("Unsupported 1D shadow grad function.\n");
1685                         sample_function->name = "unsupported1DGrad";
1686                     }
1687                 }
1688                 else
1689                 {
1690                     sample_function->name = projected ? "shadow1DProj" : "shadow1D";
1691                 }
1692                 sample_function->coord_mask = WINED3DSP_WRITEMASK_0 | WINED3DSP_WRITEMASK_1;
1693             }
1694             else
1695             {
1696                 if (lod)
1697                 {
1698                     sample_function->name = projected ? "texture1DProjLod" : "texture1DLod";
1699                 }
1700                 else if (grad)
1701                 {
1702                     if (gl_info->supported[EXT_GPU_SHADER4])
1703                         sample_function->name = projected ? "texture1DProjGrad" : "texture1DGrad";
1704                     else if (gl_info->supported[ARB_SHADER_TEXTURE_LOD])
1705                         sample_function->name = projected ? "texture1DProjGradARB" : "texture1DGradARB";
1706                     else
1707                     {
1708                         FIXME("Unsupported 1D grad function.\n");
1709                         sample_function->name = "unsupported1DGrad";
1710                     }
1711                 }
1712                 else
1713                 {
1714                     sample_function->name = projected ? "texture1DProj" : "texture1D";
1715                 }
1716                 sample_function->coord_mask = WINED3DSP_WRITEMASK_0;
1717             }
1718             break;
1719
1720         case WINED3DSTT_2D:
1721             if (shadow)
1722             {
1723                 if (texrect)
1724                 {
1725                     if (lod)
1726                     {
1727                         sample_function->name = projected ? "shadow2DRectProjLod" : "shadow2DRectLod";
1728                     }
1729                     else if (grad)
1730                     {
1731                         if (gl_info->supported[EXT_GPU_SHADER4])
1732                             sample_function->name = projected ? "shadow2DRectProjGrad" : "shadow2DRectGrad";
1733                         else if (gl_info->supported[ARB_SHADER_TEXTURE_LOD])
1734                             sample_function->name = projected ? "shadow2DRectProjGradARB" : "shadow2DRectGradARB";
1735                         else
1736                         {
1737                             FIXME("Unsupported RECT shadow grad function.\n");
1738                             sample_function->name = "unsupported2DRectGrad";
1739                         }
1740                     }
1741                     else
1742                     {
1743                         sample_function->name = projected ? "shadow2DRectProj" : "shadow2DRect";
1744                     }
1745                 }
1746                 else
1747                 {
1748                     if (lod)
1749                     {
1750                         sample_function->name = projected ? "shadow2DProjLod" : "shadow2DLod";
1751                     }
1752                     else if (grad)
1753                     {
1754                         if (gl_info->supported[EXT_GPU_SHADER4])
1755                             sample_function->name = projected ? "shadow2DProjGrad" : "shadow2DGrad";
1756                         else if (gl_info->supported[ARB_SHADER_TEXTURE_LOD])
1757                             sample_function->name = projected ? "shadow2DProjGradARB" : "shadow2DGradARB";
1758                         else
1759                         {
1760                             FIXME("Unsupported 2D shadow grad function.\n");
1761                             sample_function->name = "unsupported2DGrad";
1762                         }
1763                     }
1764                     else
1765                     {
1766                         sample_function->name = projected ? "shadow2DProj" : "shadow2D";
1767                     }
1768                 }
1769                 sample_function->coord_mask = WINED3DSP_WRITEMASK_0 | WINED3DSP_WRITEMASK_1 | WINED3DSP_WRITEMASK_2;
1770             }
1771             else
1772             {
1773                 if (texrect)
1774                 {
1775                     if (lod)
1776                     {
1777                         sample_function->name = projected ? "texture2DRectProjLod" : "texture2DRectLod";
1778                     }
1779                     else if (grad)
1780                     {
1781                         if (gl_info->supported[EXT_GPU_SHADER4])
1782                             sample_function->name = projected ? "texture2DRectProjGrad" : "texture2DRectGrad";
1783                         else if (gl_info->supported[ARB_SHADER_TEXTURE_LOD])
1784                             sample_function->name = projected ? "texture2DRectProjGradARB" : "texture2DRectGradARB";
1785                         else
1786                         {
1787                             FIXME("Unsupported RECT grad function.\n");
1788                             sample_function->name = "unsupported2DRectGrad";
1789                         }
1790                     }
1791                     else
1792                     {
1793                         sample_function->name = projected ? "texture2DRectProj" : "texture2DRect";
1794                     }
1795                 }
1796                 else
1797                 {
1798                     if (lod)
1799                     {
1800                         sample_function->name = projected ? "texture2DProjLod" : "texture2DLod";
1801                     }
1802                     else if (grad)
1803                     {
1804                         if (gl_info->supported[EXT_GPU_SHADER4])
1805                             sample_function->name = projected ? "texture2DProjGrad" : "texture2DGrad";
1806                         else if (gl_info->supported[ARB_SHADER_TEXTURE_LOD])
1807                             sample_function->name = projected ? "texture2DProjGradARB" : "texture2DGradARB";
1808                         else
1809                         {
1810                             FIXME("Unsupported 2D grad function.\n");
1811                             sample_function->name = "unsupported2DGrad";
1812                         }
1813                     }
1814                     else
1815                     {
1816                         sample_function->name = projected ? "texture2DProj" : "texture2D";
1817                     }
1818                 }
1819                 sample_function->coord_mask = WINED3DSP_WRITEMASK_0 | WINED3DSP_WRITEMASK_1;
1820             }
1821             break;
1822
1823         case WINED3DSTT_CUBE:
1824             if (shadow)
1825             {
1826                 FIXME("Unsupported Cube shadow function.\n");
1827                 sample_function->name = "unsupportedCubeShadow";
1828                 sample_function->coord_mask = 0;
1829             }
1830             else
1831             {
1832                 if (lod)
1833                 {
1834                     sample_function->name = "textureCubeLod";
1835                 }
1836                 else if (grad)
1837                 {
1838                     if (gl_info->supported[EXT_GPU_SHADER4])
1839                         sample_function->name = "textureCubeGrad";
1840                     else if (gl_info->supported[ARB_SHADER_TEXTURE_LOD])
1841                         sample_function->name = "textureCubeGradARB";
1842                     else
1843                     {
1844                         FIXME("Unsupported Cube grad function.\n");
1845                         sample_function->name = "unsupportedCubeGrad";
1846                     }
1847                 }
1848                 else
1849                 {
1850                     sample_function->name = "textureCube";
1851                 }
1852                 sample_function->coord_mask = WINED3DSP_WRITEMASK_0 | WINED3DSP_WRITEMASK_1 | WINED3DSP_WRITEMASK_2;
1853             }
1854             break;
1855
1856         case WINED3DSTT_VOLUME:
1857             if (shadow)
1858             {
1859                 FIXME("Unsupported 3D shadow function.\n");
1860                 sample_function->name = "unsupported3DShadow";
1861                 sample_function->coord_mask = 0;
1862             }
1863             else
1864             {
1865                 if (lod)
1866                 {
1867                     sample_function->name = projected ? "texture3DProjLod" : "texture3DLod";
1868                 }
1869                 else  if (grad)
1870                 {
1871                     if (gl_info->supported[EXT_GPU_SHADER4])
1872                         sample_function->name = projected ? "texture3DProjGrad" : "texture3DGrad";
1873                     else if (gl_info->supported[ARB_SHADER_TEXTURE_LOD])
1874                         sample_function->name = projected ? "texture3DProjGradARB" : "texture3DGradARB";
1875                     else
1876                     {
1877                         FIXME("Unsupported 3D grad function.\n");
1878                         sample_function->name = "unsupported3DGrad";
1879                     }
1880                 }
1881                 else
1882                 {
1883                     sample_function->name = projected ? "texture3DProj" : "texture3D";
1884                 }
1885                 sample_function->coord_mask = WINED3DSP_WRITEMASK_0 | WINED3DSP_WRITEMASK_1 | WINED3DSP_WRITEMASK_2;
1886             }
1887             break;
1888
1889         default:
1890             sample_function->name = "";
1891             sample_function->coord_mask = 0;
1892             FIXME("Unrecognized sampler type: %#x;\n", sampler_type);
1893             break;
1894     }
1895 }
1896
1897 static void shader_glsl_append_fixup_arg(char *arguments, const char *reg_name,
1898         BOOL sign_fixup, enum fixup_channel_source channel_source)
1899 {
1900     switch(channel_source)
1901     {
1902         case CHANNEL_SOURCE_ZERO:
1903             strcat(arguments, "0.0");
1904             break;
1905
1906         case CHANNEL_SOURCE_ONE:
1907             strcat(arguments, "1.0");
1908             break;
1909
1910         case CHANNEL_SOURCE_X:
1911             strcat(arguments, reg_name);
1912             strcat(arguments, ".x");
1913             break;
1914
1915         case CHANNEL_SOURCE_Y:
1916             strcat(arguments, reg_name);
1917             strcat(arguments, ".y");
1918             break;
1919
1920         case CHANNEL_SOURCE_Z:
1921             strcat(arguments, reg_name);
1922             strcat(arguments, ".z");
1923             break;
1924
1925         case CHANNEL_SOURCE_W:
1926             strcat(arguments, reg_name);
1927             strcat(arguments, ".w");
1928             break;
1929
1930         default:
1931             FIXME("Unhandled channel source %#x\n", channel_source);
1932             strcat(arguments, "undefined");
1933             break;
1934     }
1935
1936     if (sign_fixup) strcat(arguments, " * 2.0 - 1.0");
1937 }
1938
1939 static void shader_glsl_color_correction(const struct wined3d_shader_instruction *ins, struct color_fixup_desc fixup)
1940 {
1941     struct wined3d_shader_dst_param dst;
1942     unsigned int mask_size, remaining;
1943     struct glsl_dst_param dst_param;
1944     char arguments[256];
1945     DWORD mask;
1946
1947     mask = 0;
1948     if (fixup.x_sign_fixup || fixup.x_source != CHANNEL_SOURCE_X) mask |= WINED3DSP_WRITEMASK_0;
1949     if (fixup.y_sign_fixup || fixup.y_source != CHANNEL_SOURCE_Y) mask |= WINED3DSP_WRITEMASK_1;
1950     if (fixup.z_sign_fixup || fixup.z_source != CHANNEL_SOURCE_Z) mask |= WINED3DSP_WRITEMASK_2;
1951     if (fixup.w_sign_fixup || fixup.w_source != CHANNEL_SOURCE_W) mask |= WINED3DSP_WRITEMASK_3;
1952     mask &= ins->dst[0].write_mask;
1953
1954     if (!mask) return; /* Nothing to do */
1955
1956     if (is_complex_fixup(fixup))
1957     {
1958         enum complex_fixup complex_fixup = get_complex_fixup(fixup);
1959         FIXME("Complex fixup (%#x) not supported\n",complex_fixup);
1960         return;
1961     }
1962
1963     mask_size = shader_glsl_get_write_mask_size(mask);
1964
1965     dst = ins->dst[0];
1966     dst.write_mask = mask;
1967     shader_glsl_add_dst_param(ins, &dst, &dst_param);
1968
1969     arguments[0] = '\0';
1970     remaining = mask_size;
1971     if (mask & WINED3DSP_WRITEMASK_0)
1972     {
1973         shader_glsl_append_fixup_arg(arguments, dst_param.reg_name, fixup.x_sign_fixup, fixup.x_source);
1974         if (--remaining) strcat(arguments, ", ");
1975     }
1976     if (mask & WINED3DSP_WRITEMASK_1)
1977     {
1978         shader_glsl_append_fixup_arg(arguments, dst_param.reg_name, fixup.y_sign_fixup, fixup.y_source);
1979         if (--remaining) strcat(arguments, ", ");
1980     }
1981     if (mask & WINED3DSP_WRITEMASK_2)
1982     {
1983         shader_glsl_append_fixup_arg(arguments, dst_param.reg_name, fixup.z_sign_fixup, fixup.z_source);
1984         if (--remaining) strcat(arguments, ", ");
1985     }
1986     if (mask & WINED3DSP_WRITEMASK_3)
1987     {
1988         shader_glsl_append_fixup_arg(arguments, dst_param.reg_name, fixup.w_sign_fixup, fixup.w_source);
1989         if (--remaining) strcat(arguments, ", ");
1990     }
1991
1992     if (mask_size > 1)
1993     {
1994         shader_addline(ins->ctx->buffer, "%s%s = vec%u(%s);\n",
1995                 dst_param.reg_name, dst_param.mask_str, mask_size, arguments);
1996     }
1997     else
1998     {
1999         shader_addline(ins->ctx->buffer, "%s%s = %s;\n", dst_param.reg_name, dst_param.mask_str, arguments);
2000     }
2001 }
2002
2003 static void PRINTF_ATTR(8, 9) shader_glsl_gen_sample_code(const struct wined3d_shader_instruction *ins,
2004         DWORD sampler, const struct glsl_sample_function *sample_function, DWORD swizzle,
2005         const char *dx, const char *dy, const char *bias, const char *coord_reg_fmt, ...)
2006 {
2007     const char *sampler_base;
2008     char dst_swizzle[6];
2009     struct color_fixup_desc fixup;
2010     BOOL np2_fixup = FALSE;
2011     va_list args;
2012
2013     shader_glsl_swizzle_to_str(swizzle, FALSE, ins->dst[0].write_mask, dst_swizzle);
2014
2015     if (shader_is_pshader_version(ins->ctx->reg_maps->shader_version.type))
2016     {
2017         const struct shader_glsl_ctx_priv *priv = ins->ctx->backend_data;
2018         fixup = priv->cur_ps_args->color_fixup[sampler];
2019         sampler_base = "Psampler";
2020
2021         if(priv->cur_ps_args->np2_fixup & (1 << sampler)) {
2022             if(bias) {
2023                 FIXME("Biased sampling from NP2 textures is unsupported\n");
2024             } else {
2025                 np2_fixup = TRUE;
2026             }
2027         }
2028     } else {
2029         sampler_base = "Vsampler";
2030         fixup = COLOR_FIXUP_IDENTITY; /* FIXME: Vshader color fixup */
2031     }
2032
2033     shader_glsl_append_dst(ins->ctx->buffer, ins);
2034
2035     shader_addline(ins->ctx->buffer, "%s(%s%u, ", sample_function->name, sampler_base, sampler);
2036
2037     va_start(args, coord_reg_fmt);
2038     shader_vaddline(ins->ctx->buffer, coord_reg_fmt, args);
2039     va_end(args);
2040
2041     if(bias) {
2042         shader_addline(ins->ctx->buffer, ", %s)%s);\n", bias, dst_swizzle);
2043     } else {
2044         if (np2_fixup) {
2045             const struct shader_glsl_ctx_priv *priv = ins->ctx->backend_data;
2046             const unsigned char idx = priv->cur_np2fixup_info->idx[sampler];
2047
2048             shader_addline(ins->ctx->buffer, " * PsamplerNP2Fixup[%u].%s)%s);\n", idx >> 1,
2049                            (idx % 2) ? "zw" : "xy", dst_swizzle);
2050         } else if(dx && dy) {
2051             shader_addline(ins->ctx->buffer, ", %s, %s)%s);\n", dx, dy, dst_swizzle);
2052         } else {
2053             shader_addline(ins->ctx->buffer, ")%s);\n", dst_swizzle);
2054         }
2055     }
2056
2057     if(!is_identity_fixup(fixup)) {
2058         shader_glsl_color_correction(ins, fixup);
2059     }
2060 }
2061
2062 /*****************************************************************************
2063  * Begin processing individual instruction opcodes
2064  ****************************************************************************/
2065
2066 /* Generate GLSL arithmetic functions (dst = src1 + src2) */
2067 static void shader_glsl_arith(const struct wined3d_shader_instruction *ins)
2068 {
2069     struct wined3d_shader_buffer *buffer = ins->ctx->buffer;
2070     struct glsl_src_param src0_param;
2071     struct glsl_src_param src1_param;
2072     DWORD write_mask;
2073     char op;
2074
2075     /* Determine the GLSL operator to use based on the opcode */
2076     switch (ins->handler_idx)
2077     {
2078         case WINED3DSIH_MUL: op = '*'; break;
2079         case WINED3DSIH_ADD: op = '+'; break;
2080         case WINED3DSIH_SUB: op = '-'; break;
2081         default:
2082             op = ' ';
2083             FIXME("Opcode %#x not yet handled in GLSL\n", ins->handler_idx);
2084             break;
2085     }
2086
2087     write_mask = shader_glsl_append_dst(buffer, ins);
2088     shader_glsl_add_src_param(ins, &ins->src[0], write_mask, &src0_param);
2089     shader_glsl_add_src_param(ins, &ins->src[1], write_mask, &src1_param);
2090     shader_addline(buffer, "%s %c %s);\n", src0_param.param_str, op, src1_param.param_str);
2091 }
2092
2093 /* Process the WINED3DSIO_MOV opcode using GLSL (dst = src) */
2094 static void shader_glsl_mov(const struct wined3d_shader_instruction *ins)
2095 {
2096     const struct wined3d_gl_info *gl_info = ins->ctx->gl_info;
2097     struct wined3d_shader_buffer *buffer = ins->ctx->buffer;
2098     struct glsl_src_param src0_param;
2099     DWORD write_mask;
2100
2101     write_mask = shader_glsl_append_dst(buffer, ins);
2102     shader_glsl_add_src_param(ins, &ins->src[0], write_mask, &src0_param);
2103
2104     /* In vs_1_1 WINED3DSIO_MOV can write to the address register. In later
2105      * shader versions WINED3DSIO_MOVA is used for this. */
2106     if (ins->ctx->reg_maps->shader_version.major == 1
2107             && !shader_is_pshader_version(ins->ctx->reg_maps->shader_version.type)
2108             && ins->dst[0].reg.type == WINED3DSPR_ADDR)
2109     {
2110         /* This is a simple floor() */
2111         unsigned int mask_size = shader_glsl_get_write_mask_size(write_mask);
2112         if (mask_size > 1) {
2113             shader_addline(buffer, "ivec%d(floor(%s)));\n", mask_size, src0_param.param_str);
2114         } else {
2115             shader_addline(buffer, "int(floor(%s)));\n", src0_param.param_str);
2116         }
2117     }
2118     else if(ins->handler_idx == WINED3DSIH_MOVA)
2119     {
2120         /* We need to *round* to the nearest int here. */
2121         unsigned int mask_size = shader_glsl_get_write_mask_size(write_mask);
2122
2123         if (gl_info->supported[EXT_GPU_SHADER4])
2124         {
2125             if (mask_size > 1)
2126                 shader_addline(buffer, "ivec%d(round(%s)));\n", mask_size, src0_param.param_str);
2127             else
2128                 shader_addline(buffer, "int(round(%s)));\n", src0_param.param_str);
2129         }
2130         else
2131         {
2132             if (mask_size > 1)
2133                 shader_addline(buffer, "ivec%d(floor(abs(%s) + vec%d(0.5)) * sign(%s)));\n",
2134                         mask_size, src0_param.param_str, mask_size, src0_param.param_str);
2135             else
2136                 shader_addline(buffer, "int(floor(abs(%s) + 0.5) * sign(%s)));\n",
2137                         src0_param.param_str, src0_param.param_str);
2138         }
2139     }
2140     else
2141     {
2142         shader_addline(buffer, "%s);\n", src0_param.param_str);
2143     }
2144 }
2145
2146 /* Process the dot product operators DP3 and DP4 in GLSL (dst = dot(src0, src1)) */
2147 static void shader_glsl_dot(const struct wined3d_shader_instruction *ins)
2148 {
2149     struct wined3d_shader_buffer *buffer = ins->ctx->buffer;
2150     struct glsl_src_param src0_param;
2151     struct glsl_src_param src1_param;
2152     DWORD dst_write_mask, src_write_mask;
2153     unsigned int dst_size = 0;
2154
2155     dst_write_mask = shader_glsl_append_dst(buffer, ins);
2156     dst_size = shader_glsl_get_write_mask_size(dst_write_mask);
2157
2158     /* dp3 works on vec3, dp4 on vec4 */
2159     if (ins->handler_idx == WINED3DSIH_DP4)
2160     {
2161         src_write_mask = WINED3DSP_WRITEMASK_ALL;
2162     } else {
2163         src_write_mask = WINED3DSP_WRITEMASK_0 | WINED3DSP_WRITEMASK_1 | WINED3DSP_WRITEMASK_2;
2164     }
2165
2166     shader_glsl_add_src_param(ins, &ins->src[0], src_write_mask, &src0_param);
2167     shader_glsl_add_src_param(ins, &ins->src[1], src_write_mask, &src1_param);
2168
2169     if (dst_size > 1) {
2170         shader_addline(buffer, "vec%d(dot(%s, %s)));\n", dst_size, src0_param.param_str, src1_param.param_str);
2171     } else {
2172         shader_addline(buffer, "dot(%s, %s));\n", src0_param.param_str, src1_param.param_str);
2173     }
2174 }
2175
2176 /* Note that this instruction has some restrictions. The destination write mask
2177  * can't contain the w component, and the source swizzles have to be .xyzw */
2178 static void shader_glsl_cross(const struct wined3d_shader_instruction *ins)
2179 {
2180     DWORD src_mask = WINED3DSP_WRITEMASK_0 | WINED3DSP_WRITEMASK_1 | WINED3DSP_WRITEMASK_2;
2181     struct glsl_src_param src0_param;
2182     struct glsl_src_param src1_param;
2183     char dst_mask[6];
2184
2185     shader_glsl_get_write_mask(&ins->dst[0], dst_mask);
2186     shader_glsl_append_dst(ins->ctx->buffer, ins);
2187     shader_glsl_add_src_param(ins, &ins->src[0], src_mask, &src0_param);
2188     shader_glsl_add_src_param(ins, &ins->src[1], src_mask, &src1_param);
2189     shader_addline(ins->ctx->buffer, "cross(%s, %s)%s);\n", src0_param.param_str, src1_param.param_str, dst_mask);
2190 }
2191
2192 /* Process the WINED3DSIO_POW instruction in GLSL (dst = |src0|^src1)
2193  * Src0 and src1 are scalars. Note that D3D uses the absolute of src0, while
2194  * GLSL uses the value as-is. */
2195 static void shader_glsl_pow(const struct wined3d_shader_instruction *ins)
2196 {
2197     struct wined3d_shader_buffer *buffer = ins->ctx->buffer;
2198     struct glsl_src_param src0_param;
2199     struct glsl_src_param src1_param;
2200     DWORD dst_write_mask;
2201     unsigned int dst_size;
2202
2203     dst_write_mask = shader_glsl_append_dst(buffer, ins);
2204     dst_size = shader_glsl_get_write_mask_size(dst_write_mask);
2205
2206     shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_0, &src0_param);
2207     shader_glsl_add_src_param(ins, &ins->src[1], WINED3DSP_WRITEMASK_0, &src1_param);
2208
2209     if (dst_size > 1)
2210     {
2211         shader_addline(buffer, "vec%u(%s == 0.0 ? 1.0 : pow(abs(%s), %s)));\n",
2212                 dst_size, src1_param.param_str, src0_param.param_str, src1_param.param_str);
2213     }
2214     else
2215     {
2216         shader_addline(buffer, "%s == 0.0 ? 1.0 : pow(abs(%s), %s));\n",
2217                 src1_param.param_str, src0_param.param_str, src1_param.param_str);
2218     }
2219 }
2220
2221 /* Process the WINED3DSIO_LOG instruction in GLSL (dst = log2(|src0|))
2222  * Src0 is a scalar. Note that D3D uses the absolute of src0, while
2223  * GLSL uses the value as-is. */
2224 static void shader_glsl_log(const struct wined3d_shader_instruction *ins)
2225 {
2226     struct wined3d_shader_buffer *buffer = ins->ctx->buffer;
2227     struct glsl_src_param src0_param;
2228     DWORD dst_write_mask;
2229     unsigned int dst_size;
2230
2231     dst_write_mask = shader_glsl_append_dst(buffer, ins);
2232     dst_size = shader_glsl_get_write_mask_size(dst_write_mask);
2233
2234     shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_0, &src0_param);
2235
2236     if (dst_size > 1)
2237     {
2238         shader_addline(buffer, "vec%u(log2(abs(%s))));\n",
2239                 dst_size, src0_param.param_str);
2240     }
2241     else
2242     {
2243         shader_addline(buffer, "log2(abs(%s)));\n",
2244                 src0_param.param_str);
2245     }
2246 }
2247
2248 /* Map the opcode 1-to-1 to the GL code (arg->dst = instruction(src0, src1, ...) */
2249 static void shader_glsl_map2gl(const struct wined3d_shader_instruction *ins)
2250 {
2251     struct wined3d_shader_buffer *buffer = ins->ctx->buffer;
2252     struct glsl_src_param src_param;
2253     const char *instruction;
2254     DWORD write_mask;
2255     unsigned i;
2256
2257     /* Determine the GLSL function to use based on the opcode */
2258     /* TODO: Possibly make this a table for faster lookups */
2259     switch (ins->handler_idx)
2260     {
2261         case WINED3DSIH_MIN: instruction = "min"; break;
2262         case WINED3DSIH_MAX: instruction = "max"; break;
2263         case WINED3DSIH_ABS: instruction = "abs"; break;
2264         case WINED3DSIH_FRC: instruction = "fract"; break;
2265         case WINED3DSIH_EXP: instruction = "exp2"; break;
2266         case WINED3DSIH_DSX: instruction = "dFdx"; break;
2267         case WINED3DSIH_DSY: instruction = "ycorrection.y * dFdy"; break;
2268         default: instruction = "";
2269             FIXME("Opcode %#x not yet handled in GLSL\n", ins->handler_idx);
2270             break;
2271     }
2272
2273     write_mask = shader_glsl_append_dst(buffer, ins);
2274
2275     shader_addline(buffer, "%s(", instruction);
2276
2277     if (ins->src_count)
2278     {
2279         shader_glsl_add_src_param(ins, &ins->src[0], write_mask, &src_param);
2280         shader_addline(buffer, "%s", src_param.param_str);
2281         for (i = 1; i < ins->src_count; ++i)
2282         {
2283             shader_glsl_add_src_param(ins, &ins->src[i], write_mask, &src_param);
2284             shader_addline(buffer, ", %s", src_param.param_str);
2285         }
2286     }
2287
2288     shader_addline(buffer, "));\n");
2289 }
2290
2291 static void shader_glsl_nrm(const struct wined3d_shader_instruction *ins)
2292 {
2293     struct wined3d_shader_buffer *buffer = ins->ctx->buffer;
2294     struct glsl_src_param src_param;
2295     unsigned int mask_size;
2296     DWORD write_mask;
2297     char dst_mask[6];
2298
2299     write_mask = shader_glsl_get_write_mask(ins->dst, dst_mask);
2300     mask_size = shader_glsl_get_write_mask_size(write_mask);
2301     shader_glsl_add_src_param(ins, &ins->src[0], write_mask, &src_param);
2302
2303     shader_addline(buffer, "tmp0.x = dot(%s, %s);\n",
2304             src_param.param_str, src_param.param_str);
2305     shader_glsl_append_dst(buffer, ins);
2306
2307     if (mask_size > 1)
2308     {
2309         shader_addline(buffer, "tmp0.x == 0.0 ? vec%u(0.0) : (%s * inversesqrt(tmp0.x)));\n",
2310                 mask_size, src_param.param_str);
2311     }
2312     else
2313     {
2314         shader_addline(buffer, "tmp0.x == 0.0 ? 0.0 : (%s * inversesqrt(tmp0.x)));\n",
2315                 src_param.param_str);
2316     }
2317 }
2318
2319 /** Process the WINED3DSIO_EXPP instruction in GLSL:
2320  * For shader model 1.x, do the following (and honor the writemask, so use a temporary variable):
2321  *   dst.x = 2^(floor(src))
2322  *   dst.y = src - floor(src)
2323  *   dst.z = 2^src   (partial precision is allowed, but optional)
2324  *   dst.w = 1.0;
2325  * For 2.0 shaders, just do this (honoring writemask and swizzle):
2326  *   dst = 2^src;    (partial precision is allowed, but optional)
2327  */
2328 static void shader_glsl_expp(const struct wined3d_shader_instruction *ins)
2329 {
2330     struct glsl_src_param src_param;
2331
2332     shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_0, &src_param);
2333
2334     if (ins->ctx->reg_maps->shader_version.major < 2)
2335     {
2336         char dst_mask[6];
2337
2338         shader_addline(ins->ctx->buffer, "tmp0.x = exp2(floor(%s));\n", src_param.param_str);
2339         shader_addline(ins->ctx->buffer, "tmp0.y = %s - floor(%s);\n", src_param.param_str, src_param.param_str);
2340         shader_addline(ins->ctx->buffer, "tmp0.z = exp2(%s);\n", src_param.param_str);
2341         shader_addline(ins->ctx->buffer, "tmp0.w = 1.0;\n");
2342
2343         shader_glsl_append_dst(ins->ctx->buffer, ins);
2344         shader_glsl_get_write_mask(&ins->dst[0], dst_mask);
2345         shader_addline(ins->ctx->buffer, "tmp0%s);\n", dst_mask);
2346     } else {
2347         DWORD write_mask;
2348         unsigned int mask_size;
2349
2350         write_mask = shader_glsl_append_dst(ins->ctx->buffer, ins);
2351         mask_size = shader_glsl_get_write_mask_size(write_mask);
2352
2353         if (mask_size > 1) {
2354             shader_addline(ins->ctx->buffer, "vec%d(exp2(%s)));\n", mask_size, src_param.param_str);
2355         } else {
2356             shader_addline(ins->ctx->buffer, "exp2(%s));\n", src_param.param_str);
2357         }
2358     }
2359 }
2360
2361 /** Process the RCP (reciprocal or inverse) opcode in GLSL (dst = 1 / src) */
2362 static void shader_glsl_rcp(const struct wined3d_shader_instruction *ins)
2363 {
2364     struct glsl_src_param src_param;
2365     DWORD write_mask;
2366     unsigned int mask_size;
2367
2368     write_mask = shader_glsl_append_dst(ins->ctx->buffer, ins);
2369     mask_size = shader_glsl_get_write_mask_size(write_mask);
2370     shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_3, &src_param);
2371
2372     if (mask_size > 1)
2373     {
2374         shader_addline(ins->ctx->buffer, "vec%u(1.0 / %s));\n",
2375                 mask_size, src_param.param_str);
2376     }
2377     else
2378     {
2379         shader_addline(ins->ctx->buffer, "1.0 / %s);\n",
2380                 src_param.param_str);
2381     }
2382 }
2383
2384 static void shader_glsl_rsq(const struct wined3d_shader_instruction *ins)
2385 {
2386     struct wined3d_shader_buffer *buffer = ins->ctx->buffer;
2387     struct glsl_src_param src_param;
2388     DWORD write_mask;
2389     unsigned int mask_size;
2390
2391     write_mask = shader_glsl_append_dst(buffer, ins);
2392     mask_size = shader_glsl_get_write_mask_size(write_mask);
2393
2394     shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_3, &src_param);
2395
2396     if (mask_size > 1)
2397     {
2398         shader_addline(buffer, "vec%u(inversesqrt(abs(%s))));\n",
2399                 mask_size, src_param.param_str);
2400     }
2401     else
2402     {
2403         shader_addline(buffer, "inversesqrt(abs(%s)));\n",
2404                 src_param.param_str);
2405     }
2406 }
2407
2408 /** Process signed comparison opcodes in GLSL. */
2409 static void shader_glsl_compare(const struct wined3d_shader_instruction *ins)
2410 {
2411     struct glsl_src_param src0_param;
2412     struct glsl_src_param src1_param;
2413     DWORD write_mask;
2414     unsigned int mask_size;
2415
2416     write_mask = shader_glsl_append_dst(ins->ctx->buffer, ins);
2417     mask_size = shader_glsl_get_write_mask_size(write_mask);
2418     shader_glsl_add_src_param(ins, &ins->src[0], write_mask, &src0_param);
2419     shader_glsl_add_src_param(ins, &ins->src[1], write_mask, &src1_param);
2420
2421     if (mask_size > 1) {
2422         const char *compare;
2423
2424         switch(ins->handler_idx)
2425         {
2426             case WINED3DSIH_SLT: compare = "lessThan"; break;
2427             case WINED3DSIH_SGE: compare = "greaterThanEqual"; break;
2428             default: compare = "";
2429                 FIXME("Can't handle opcode %#x\n", ins->handler_idx);
2430         }
2431
2432         shader_addline(ins->ctx->buffer, "vec%d(%s(%s, %s)));\n", mask_size, compare,
2433                 src0_param.param_str, src1_param.param_str);
2434     } else {
2435         switch(ins->handler_idx)
2436         {
2437             case WINED3DSIH_SLT:
2438                 /* Step(src0, src1) is not suitable here because if src0 == src1 SLT is supposed,
2439                  * to return 0.0 but step returns 1.0 because step is not < x
2440                  * An alternative is a bvec compare padded with an unused second component.
2441                  * step(src1 * -1.0, src0 * -1.0) is not an option because it suffers from the same
2442                  * issue. Playing with not() is not possible either because not() does not accept
2443                  * a scalar.
2444                  */
2445                 shader_addline(ins->ctx->buffer, "(%s < %s) ? 1.0 : 0.0);\n",
2446                         src0_param.param_str, src1_param.param_str);
2447                 break;
2448             case WINED3DSIH_SGE:
2449                 /* Here we can use the step() function and safe a conditional */
2450                 shader_addline(ins->ctx->buffer, "step(%s, %s));\n", src1_param.param_str, src0_param.param_str);
2451                 break;
2452             default:
2453                 FIXME("Can't handle opcode %#x\n", ins->handler_idx);
2454         }
2455
2456     }
2457 }
2458
2459 /** Process CMP instruction in GLSL (dst = src0 >= 0.0 ? src1 : src2), per channel */
2460 static void shader_glsl_cmp(const struct wined3d_shader_instruction *ins)
2461 {
2462     struct glsl_src_param src0_param;
2463     struct glsl_src_param src1_param;
2464     struct glsl_src_param src2_param;
2465     DWORD write_mask, cmp_channel = 0;
2466     unsigned int i, j;
2467     char mask_char[6];
2468     BOOL temp_destination = FALSE;
2469
2470     if (shader_is_scalar(&ins->src[0].reg))
2471     {
2472         write_mask = shader_glsl_append_dst(ins->ctx->buffer, ins);
2473
2474         shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_ALL, &src0_param);
2475         shader_glsl_add_src_param(ins, &ins->src[1], write_mask, &src1_param);
2476         shader_glsl_add_src_param(ins, &ins->src[2], write_mask, &src2_param);
2477
2478         shader_addline(ins->ctx->buffer, "%s >= 0.0 ? %s : %s);\n",
2479                        src0_param.param_str, src1_param.param_str, src2_param.param_str);
2480     } else {
2481         DWORD dst_mask = ins->dst[0].write_mask;
2482         struct wined3d_shader_dst_param dst = ins->dst[0];
2483
2484         /* Cycle through all source0 channels */
2485         for (i=0; i<4; i++) {
2486             write_mask = 0;
2487             /* Find the destination channels which use the current source0 channel */
2488             for (j=0; j<4; j++) {
2489                 if (((ins->src[0].swizzle >> (2 * j)) & 0x3) == i)
2490                 {
2491                     write_mask |= WINED3DSP_WRITEMASK_0 << j;
2492                     cmp_channel = WINED3DSP_WRITEMASK_0 << j;
2493                 }
2494             }
2495             dst.write_mask = dst_mask & write_mask;
2496
2497             /* Splitting the cmp instruction up in multiple lines imposes a problem:
2498             * The first lines may overwrite source parameters of the following lines.
2499             * Deal with that by using a temporary destination register if needed
2500             */
2501             if ((ins->src[0].reg.idx == ins->dst[0].reg.idx
2502                     && ins->src[0].reg.type == ins->dst[0].reg.type)
2503                     || (ins->src[1].reg.idx == ins->dst[0].reg.idx
2504                     && ins->src[1].reg.type == ins->dst[0].reg.type)
2505                     || (ins->src[2].reg.idx == ins->dst[0].reg.idx
2506                     && ins->src[2].reg.type == ins->dst[0].reg.type))
2507             {
2508                 write_mask = shader_glsl_get_write_mask(&dst, mask_char);
2509                 if (!write_mask) continue;
2510                 shader_addline(ins->ctx->buffer, "tmp0%s = (", mask_char);
2511                 temp_destination = TRUE;
2512             } else {
2513                 write_mask = shader_glsl_append_dst_ext(ins->ctx->buffer, ins, &dst);
2514                 if (!write_mask) continue;
2515             }
2516
2517             shader_glsl_add_src_param(ins, &ins->src[0], cmp_channel, &src0_param);
2518             shader_glsl_add_src_param(ins, &ins->src[1], write_mask, &src1_param);
2519             shader_glsl_add_src_param(ins, &ins->src[2], write_mask, &src2_param);
2520
2521             shader_addline(ins->ctx->buffer, "%s >= 0.0 ? %s : %s);\n",
2522                         src0_param.param_str, src1_param.param_str, src2_param.param_str);
2523         }
2524
2525         if(temp_destination) {
2526             shader_glsl_get_write_mask(&ins->dst[0], mask_char);
2527             shader_glsl_append_dst(ins->ctx->buffer, ins);
2528             shader_addline(ins->ctx->buffer, "tmp0%s);\n", mask_char);
2529         }
2530     }
2531
2532 }
2533
2534 /** Process the CND opcode in GLSL (dst = (src0 > 0.5) ? src1 : src2) */
2535 /* For ps 1.1-1.3, only a single component of src0 is used. For ps 1.4
2536  * the compare is done per component of src0. */
2537 static void shader_glsl_cnd(const struct wined3d_shader_instruction *ins)
2538 {
2539     struct wined3d_shader_dst_param dst;
2540     struct glsl_src_param src0_param;
2541     struct glsl_src_param src1_param;
2542     struct glsl_src_param src2_param;
2543     DWORD write_mask, cmp_channel = 0;
2544     unsigned int i, j;
2545     DWORD dst_mask;
2546     DWORD shader_version = WINED3D_SHADER_VERSION(ins->ctx->reg_maps->shader_version.major,
2547             ins->ctx->reg_maps->shader_version.minor);
2548
2549     if (shader_version < WINED3D_SHADER_VERSION(1, 4))
2550     {
2551         write_mask = shader_glsl_append_dst(ins->ctx->buffer, ins);
2552         shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_0, &src0_param);
2553         shader_glsl_add_src_param(ins, &ins->src[1], write_mask, &src1_param);
2554         shader_glsl_add_src_param(ins, &ins->src[2], write_mask, &src2_param);
2555
2556         /* Fun: The D3DSI_COISSUE flag changes the semantic of the cnd instruction for < 1.4 shaders */
2557         if (ins->coissue)
2558         {
2559             shader_addline(ins->ctx->buffer, "%s /* COISSUE! */);\n", src1_param.param_str);
2560         } else {
2561             shader_addline(ins->ctx->buffer, "%s > 0.5 ? %s : %s);\n",
2562                     src0_param.param_str, src1_param.param_str, src2_param.param_str);
2563         }
2564         return;
2565     }
2566     /* Cycle through all source0 channels */
2567     dst_mask = ins->dst[0].write_mask;
2568     dst = ins->dst[0];
2569     for (i=0; i<4; i++) {
2570         write_mask = 0;
2571         /* Find the destination channels which use the current source0 channel */
2572         for (j=0; j<4; j++) {
2573             if (((ins->src[0].swizzle >> (2 * j)) & 0x3) == i)
2574             {
2575                 write_mask |= WINED3DSP_WRITEMASK_0 << j;
2576                 cmp_channel = WINED3DSP_WRITEMASK_0 << j;
2577             }
2578         }
2579
2580         dst.write_mask = dst_mask & write_mask;
2581         write_mask = shader_glsl_append_dst_ext(ins->ctx->buffer, ins, &dst);
2582         if (!write_mask) continue;
2583
2584         shader_glsl_add_src_param(ins, &ins->src[0], cmp_channel, &src0_param);
2585         shader_glsl_add_src_param(ins, &ins->src[1], write_mask, &src1_param);
2586         shader_glsl_add_src_param(ins, &ins->src[2], write_mask, &src2_param);
2587
2588         shader_addline(ins->ctx->buffer, "%s > 0.5 ? %s : %s);\n",
2589                 src0_param.param_str, src1_param.param_str, src2_param.param_str);
2590     }
2591 }
2592
2593 /** GLSL code generation for WINED3DSIO_MAD: Multiply the first 2 opcodes, then add the last */
2594 static void shader_glsl_mad(const struct wined3d_shader_instruction *ins)
2595 {
2596     struct glsl_src_param src0_param;
2597     struct glsl_src_param src1_param;
2598     struct glsl_src_param src2_param;
2599     DWORD write_mask;
2600
2601     write_mask = shader_glsl_append_dst(ins->ctx->buffer, ins);
2602     shader_glsl_add_src_param(ins, &ins->src[0], write_mask, &src0_param);
2603     shader_glsl_add_src_param(ins, &ins->src[1], write_mask, &src1_param);
2604     shader_glsl_add_src_param(ins, &ins->src[2], write_mask, &src2_param);
2605     shader_addline(ins->ctx->buffer, "(%s * %s) + %s);\n",
2606             src0_param.param_str, src1_param.param_str, src2_param.param_str);
2607 }
2608
2609 /* Handles transforming all WINED3DSIO_M?x? opcodes for
2610    Vertex shaders to GLSL codes */
2611 static void shader_glsl_mnxn(const struct wined3d_shader_instruction *ins)
2612 {
2613     int i;
2614     int nComponents = 0;
2615     struct wined3d_shader_dst_param tmp_dst = {{0}};
2616     struct wined3d_shader_src_param tmp_src[2] = {{{0}}};
2617     struct wined3d_shader_instruction tmp_ins;
2618
2619     memset(&tmp_ins, 0, sizeof(tmp_ins));
2620
2621     /* Set constants for the temporary argument */
2622     tmp_ins.ctx = ins->ctx;
2623     tmp_ins.dst_count = 1;
2624     tmp_ins.dst = &tmp_dst;
2625     tmp_ins.src_count = 2;
2626     tmp_ins.src = tmp_src;
2627
2628     switch(ins->handler_idx)
2629     {
2630         case WINED3DSIH_M4x4:
2631             nComponents = 4;
2632             tmp_ins.handler_idx = WINED3DSIH_DP4;
2633             break;
2634         case WINED3DSIH_M4x3:
2635             nComponents = 3;
2636             tmp_ins.handler_idx = WINED3DSIH_DP4;
2637             break;
2638         case WINED3DSIH_M3x4:
2639             nComponents = 4;
2640             tmp_ins.handler_idx = WINED3DSIH_DP3;
2641             break;
2642         case WINED3DSIH_M3x3:
2643             nComponents = 3;
2644             tmp_ins.handler_idx = WINED3DSIH_DP3;
2645             break;
2646         case WINED3DSIH_M3x2:
2647             nComponents = 2;
2648             tmp_ins.handler_idx = WINED3DSIH_DP3;
2649             break;
2650         default:
2651             break;
2652     }
2653
2654     tmp_dst = ins->dst[0];
2655     tmp_src[0] = ins->src[0];
2656     tmp_src[1] = ins->src[1];
2657     for (i = 0; i < nComponents; ++i)
2658     {
2659         tmp_dst.write_mask = WINED3DSP_WRITEMASK_0 << i;
2660         shader_glsl_dot(&tmp_ins);
2661         ++tmp_src[1].reg.idx;
2662     }
2663 }
2664
2665 /**
2666     The LRP instruction performs a component-wise linear interpolation
2667     between the second and third operands using the first operand as the
2668     blend factor.  Equation:  (dst = src2 + src0 * (src1 - src2))
2669     This is equivalent to mix(src2, src1, src0);
2670 */
2671 static void shader_glsl_lrp(const struct wined3d_shader_instruction *ins)
2672 {
2673     struct glsl_src_param src0_param;
2674     struct glsl_src_param src1_param;
2675     struct glsl_src_param src2_param;
2676     DWORD write_mask;
2677
2678     write_mask = shader_glsl_append_dst(ins->ctx->buffer, ins);
2679
2680     shader_glsl_add_src_param(ins, &ins->src[0], write_mask, &src0_param);
2681     shader_glsl_add_src_param(ins, &ins->src[1], write_mask, &src1_param);
2682     shader_glsl_add_src_param(ins, &ins->src[2], write_mask, &src2_param);
2683
2684     shader_addline(ins->ctx->buffer, "mix(%s, %s, %s));\n",
2685             src2_param.param_str, src1_param.param_str, src0_param.param_str);
2686 }
2687
2688 /** Process the WINED3DSIO_LIT instruction in GLSL:
2689  * dst.x = dst.w = 1.0
2690  * dst.y = (src0.x > 0) ? src0.x
2691  * dst.z = (src0.x > 0) ? ((src0.y > 0) ? pow(src0.y, src.w) : 0) : 0
2692  *                                        where src.w is clamped at +- 128
2693  */
2694 static void shader_glsl_lit(const struct wined3d_shader_instruction *ins)
2695 {
2696     struct glsl_src_param src0_param;
2697     struct glsl_src_param src1_param;
2698     struct glsl_src_param src3_param;
2699     char dst_mask[6];
2700
2701     shader_glsl_append_dst(ins->ctx->buffer, ins);
2702     shader_glsl_get_write_mask(&ins->dst[0], dst_mask);
2703
2704     shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_0, &src0_param);
2705     shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_1, &src1_param);
2706     shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_3, &src3_param);
2707
2708     /* The sdk specifies the instruction like this
2709      * dst.x = 1.0;
2710      * if(src.x > 0.0) dst.y = src.x
2711      * else dst.y = 0.0.
2712      * if(src.x > 0.0 && src.y > 0.0) dst.z = pow(src.y, power);
2713      * else dst.z = 0.0;
2714      * dst.w = 1.0;
2715      * (where power = src.w clamped between -128 and 128)
2716      *
2717      * Obviously that has quite a few conditionals in it which we don't like. So the first step is this:
2718      * dst.x = 1.0                                  ... No further explanation needed
2719      * dst.y = max(src.y, 0.0);                     ... If x < 0.0, use 0.0, otherwise x. Same as the conditional
2720      * dst.z = x > 0.0 ? pow(max(y, 0.0), p) : 0;   ... 0 ^ power is 0, and otherwise we use y anyway
2721      * dst.w = 1.0.                                 ... Nothing fancy.
2722      *
2723      * So we still have one conditional in there. So do this:
2724      * dst.z = pow(max(0.0, src.y) * step(0.0, src.x), power);
2725      *
2726      * step(0.0, x) will return 1 if src.x > 0.0, and 0 otherwise. So if y is 0 we get pow(0.0 * 1.0, power),
2727      * which sets dst.z to 0. If y > 0, but x = 0.0, we get pow(y * 0.0, power), which results in 0 too.
2728      * if both x and y are > 0, we get pow(y * 1.0, power), as it is supposed to.
2729      *
2730      * Unfortunately pow(0.0 ^ 0.0) returns NaN on most GPUs, but lit with src.y = 0 and src.w = 0 returns
2731      * a non-NaN value in dst.z. What we return doesn't matter, as long as it is not NaN. Return 0, which is
2732      * what all Windows HW drivers and GL_ARB_vertex_program's LIT do.
2733      */
2734     shader_addline(ins->ctx->buffer,
2735             "vec4(1.0, max(%s, 0.0), %s == 0.0 ? 0.0 : "
2736             "pow(max(0.0, %s) * step(0.0, %s), clamp(%s, -128.0, 128.0)), 1.0)%s);\n",
2737             src0_param.param_str, src3_param.param_str, src1_param.param_str,
2738             src0_param.param_str, src3_param.param_str, dst_mask);
2739 }
2740
2741 /** Process the WINED3DSIO_DST instruction in GLSL:
2742  * dst.x = 1.0
2743  * dst.y = src0.x * src0.y
2744  * dst.z = src0.z
2745  * dst.w = src1.w
2746  */
2747 static void shader_glsl_dst(const struct wined3d_shader_instruction *ins)
2748 {
2749     struct glsl_src_param src0y_param;
2750     struct glsl_src_param src0z_param;
2751     struct glsl_src_param src1y_param;
2752     struct glsl_src_param src1w_param;
2753     char dst_mask[6];
2754
2755     shader_glsl_append_dst(ins->ctx->buffer, ins);
2756     shader_glsl_get_write_mask(&ins->dst[0], dst_mask);
2757
2758     shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_1, &src0y_param);
2759     shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_2, &src0z_param);
2760     shader_glsl_add_src_param(ins, &ins->src[1], WINED3DSP_WRITEMASK_1, &src1y_param);
2761     shader_glsl_add_src_param(ins, &ins->src[1], WINED3DSP_WRITEMASK_3, &src1w_param);
2762
2763     shader_addline(ins->ctx->buffer, "vec4(1.0, %s * %s, %s, %s))%s;\n",
2764             src0y_param.param_str, src1y_param.param_str, src0z_param.param_str, src1w_param.param_str, dst_mask);
2765 }
2766
2767 /** Process the WINED3DSIO_SINCOS instruction in GLSL:
2768  * VS 2.0 requires that specific cosine and sine constants be passed to this instruction so the hardware
2769  * can handle it.  But, these functions are built-in for GLSL, so we can just ignore the last 2 params.
2770  *
2771  * dst.x = cos(src0.?)
2772  * dst.y = sin(src0.?)
2773  * dst.z = dst.z
2774  * dst.w = dst.w
2775  */
2776 static void shader_glsl_sincos(const struct wined3d_shader_instruction *ins)
2777 {
2778     struct glsl_src_param src0_param;
2779     DWORD write_mask;
2780
2781     write_mask = shader_glsl_append_dst(ins->ctx->buffer, ins);
2782     shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_0, &src0_param);
2783
2784     switch (write_mask) {
2785         case WINED3DSP_WRITEMASK_0:
2786             shader_addline(ins->ctx->buffer, "cos(%s));\n", src0_param.param_str);
2787             break;
2788
2789         case WINED3DSP_WRITEMASK_1:
2790             shader_addline(ins->ctx->buffer, "sin(%s));\n", src0_param.param_str);
2791             break;
2792
2793         case (WINED3DSP_WRITEMASK_0 | WINED3DSP_WRITEMASK_1):
2794             shader_addline(ins->ctx->buffer, "vec2(cos(%s), sin(%s)));\n", src0_param.param_str, src0_param.param_str);
2795             break;
2796
2797         default:
2798             ERR("Write mask should be .x, .y or .xy\n");
2799             break;
2800     }
2801 }
2802
2803 /* sgn in vs_2_0 has 2 extra parameters(registers for temporary storage) which we don't use
2804  * here. But those extra parameters require a dedicated function for sgn, since map2gl would
2805  * generate invalid code
2806  */
2807 static void shader_glsl_sgn(const struct wined3d_shader_instruction *ins)
2808 {
2809     struct glsl_src_param src0_param;
2810     DWORD write_mask;
2811
2812     write_mask = shader_glsl_append_dst(ins->ctx->buffer, ins);
2813     shader_glsl_add_src_param(ins, &ins->src[0], write_mask, &src0_param);
2814
2815     shader_addline(ins->ctx->buffer, "sign(%s));\n", src0_param.param_str);
2816 }
2817
2818 /** Process the WINED3DSIO_LOOP instruction in GLSL:
2819  * Start a for() loop where src1.y is the initial value of aL,
2820  *  increment aL by src1.z for a total of src1.x iterations.
2821  *  Need to use a temporary variable for this operation.
2822  */
2823 /* FIXME: I don't think nested loops will work correctly this way. */
2824 static void shader_glsl_loop(const struct wined3d_shader_instruction *ins)
2825 {
2826     struct wined3d_shader_loop_state *loop_state = ins->ctx->loop_state;
2827     const struct wined3d_shader *shader = ins->ctx->shader;
2828     const struct wined3d_shader_lconst *constant;
2829     struct glsl_src_param src1_param;
2830     const DWORD *control_values = NULL;
2831
2832     shader_glsl_add_src_param(ins, &ins->src[1], WINED3DSP_WRITEMASK_ALL, &src1_param);
2833
2834     /* Try to hardcode the loop control parameters if possible. Direct3D 9 class hardware doesn't support real
2835      * varying indexing, but Microsoft designed this feature for Shader model 2.x+. If the loop control is
2836      * known at compile time, the GLSL compiler can unroll the loop, and replace indirect addressing with direct
2837      * addressing.
2838      */
2839     if (ins->src[1].reg.type == WINED3DSPR_CONSTINT)
2840     {
2841         LIST_FOR_EACH_ENTRY(constant, &shader->constantsI, struct wined3d_shader_lconst, entry)
2842         {
2843             if (constant->idx == ins->src[1].reg.idx)
2844             {
2845                 control_values = constant->value;
2846                 break;
2847             }
2848         }
2849     }
2850
2851     if (control_values)
2852     {
2853         struct wined3d_shader_loop_control loop_control;
2854         loop_control.count = control_values[0];
2855         loop_control.start = control_values[1];
2856         loop_control.step = (int)control_values[2];
2857
2858         if (loop_control.step > 0)
2859         {
2860             shader_addline(ins->ctx->buffer, "for (aL%u = %u; aL%u < (%u * %d + %u); aL%u += %d) {\n",
2861                     loop_state->current_depth, loop_control.start,
2862                     loop_state->current_depth, loop_control.count, loop_control.step, loop_control.start,
2863                     loop_state->current_depth, loop_control.step);
2864         }
2865         else if (loop_control.step < 0)
2866         {
2867             shader_addline(ins->ctx->buffer, "for (aL%u = %u; aL%u > (%u * %d + %u); aL%u += %d) {\n",
2868                     loop_state->current_depth, loop_control.start,
2869                     loop_state->current_depth, loop_control.count, loop_control.step, loop_control.start,
2870                     loop_state->current_depth, loop_control.step);
2871         }
2872         else
2873         {
2874             shader_addline(ins->ctx->buffer, "for (aL%u = %u, tmpInt%u = 0; tmpInt%u < %u; tmpInt%u++) {\n",
2875                     loop_state->current_depth, loop_control.start, loop_state->current_depth,
2876                     loop_state->current_depth, loop_control.count,
2877                     loop_state->current_depth);
2878         }
2879     } else {
2880         shader_addline(ins->ctx->buffer,
2881                 "for (tmpInt%u = 0, aL%u = %s.y; tmpInt%u < %s.x; tmpInt%u++, aL%u += %s.z) {\n",
2882                 loop_state->current_depth, loop_state->current_reg,
2883                 src1_param.reg_name, loop_state->current_depth, src1_param.reg_name,
2884                 loop_state->current_depth, loop_state->current_reg, src1_param.reg_name);
2885     }
2886
2887     ++loop_state->current_depth;
2888     ++loop_state->current_reg;
2889 }
2890
2891 static void shader_glsl_end(const struct wined3d_shader_instruction *ins)
2892 {
2893     struct wined3d_shader_loop_state *loop_state = ins->ctx->loop_state;
2894
2895     shader_addline(ins->ctx->buffer, "}\n");
2896
2897     if (ins->handler_idx == WINED3DSIH_ENDLOOP)
2898     {
2899         --loop_state->current_depth;
2900         --loop_state->current_reg;
2901     }
2902
2903     if (ins->handler_idx == WINED3DSIH_ENDREP)
2904     {
2905         --loop_state->current_depth;
2906     }
2907 }
2908
2909 static void shader_glsl_rep(const struct wined3d_shader_instruction *ins)
2910 {
2911     const struct wined3d_shader *shader = ins->ctx->shader;
2912     struct wined3d_shader_loop_state *loop_state = ins->ctx->loop_state;
2913     const struct wined3d_shader_lconst *constant;
2914     struct glsl_src_param src0_param;
2915     const DWORD *control_values = NULL;
2916
2917     /* Try to hardcode local values to help the GLSL compiler to unroll and optimize the loop */
2918     if (ins->src[0].reg.type == WINED3DSPR_CONSTINT)
2919     {
2920         LIST_FOR_EACH_ENTRY(constant, &shader->constantsI, struct wined3d_shader_lconst, entry)
2921         {
2922             if (constant->idx == ins->src[0].reg.idx)
2923             {
2924                 control_values = constant->value;
2925                 break;
2926             }
2927         }
2928     }
2929
2930     if (control_values)
2931     {
2932         shader_addline(ins->ctx->buffer, "for (tmpInt%d = 0; tmpInt%d < %d; tmpInt%d++) {\n",
2933                 loop_state->current_depth, loop_state->current_depth,
2934                 control_values[0], loop_state->current_depth);
2935     }
2936     else
2937     {
2938         shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_0, &src0_param);
2939         shader_addline(ins->ctx->buffer, "for (tmpInt%d = 0; tmpInt%d < %s; tmpInt%d++) {\n",
2940                 loop_state->current_depth, loop_state->current_depth,
2941                 src0_param.param_str, loop_state->current_depth);
2942     }
2943
2944     ++loop_state->current_depth;
2945 }
2946
2947 static void shader_glsl_if(const struct wined3d_shader_instruction *ins)
2948 {
2949     struct glsl_src_param src0_param;
2950
2951     shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_0, &src0_param);
2952     shader_addline(ins->ctx->buffer, "if (%s) {\n", src0_param.param_str);
2953 }
2954
2955 static void shader_glsl_ifc(const struct wined3d_shader_instruction *ins)
2956 {
2957     struct glsl_src_param src0_param;
2958     struct glsl_src_param src1_param;
2959
2960     shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_0, &src0_param);
2961     shader_glsl_add_src_param(ins, &ins->src[1], WINED3DSP_WRITEMASK_0, &src1_param);
2962
2963     shader_addline(ins->ctx->buffer, "if (%s %s %s) {\n",
2964             src0_param.param_str, shader_glsl_get_rel_op(ins->flags), src1_param.param_str);
2965 }
2966
2967 static void shader_glsl_else(const struct wined3d_shader_instruction *ins)
2968 {
2969     shader_addline(ins->ctx->buffer, "} else {\n");
2970 }
2971
2972 static void shader_glsl_break(const struct wined3d_shader_instruction *ins)
2973 {
2974     shader_addline(ins->ctx->buffer, "break;\n");
2975 }
2976
2977 /* FIXME: According to MSDN the compare is done per component. */
2978 static void shader_glsl_breakc(const struct wined3d_shader_instruction *ins)
2979 {
2980     struct glsl_src_param src0_param;
2981     struct glsl_src_param src1_param;
2982
2983     shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_0, &src0_param);
2984     shader_glsl_add_src_param(ins, &ins->src[1], WINED3DSP_WRITEMASK_0, &src1_param);
2985
2986     shader_addline(ins->ctx->buffer, "if (%s %s %s) break;\n",
2987             src0_param.param_str, shader_glsl_get_rel_op(ins->flags), src1_param.param_str);
2988 }
2989
2990 static void shader_glsl_label(const struct wined3d_shader_instruction *ins)
2991 {
2992     shader_addline(ins->ctx->buffer, "}\n");
2993     shader_addline(ins->ctx->buffer, "void subroutine%u () {\n",  ins->src[0].reg.idx);
2994 }
2995
2996 static void shader_glsl_call(const struct wined3d_shader_instruction *ins)
2997 {
2998     shader_addline(ins->ctx->buffer, "subroutine%u();\n", ins->src[0].reg.idx);
2999 }
3000
3001 static void shader_glsl_callnz(const struct wined3d_shader_instruction *ins)
3002 {
3003     struct glsl_src_param src1_param;
3004
3005     shader_glsl_add_src_param(ins, &ins->src[1], WINED3DSP_WRITEMASK_0, &src1_param);
3006     shader_addline(ins->ctx->buffer, "if (%s) subroutine%u();\n", src1_param.param_str, ins->src[0].reg.idx);
3007 }
3008
3009 static void shader_glsl_ret(const struct wined3d_shader_instruction *ins)
3010 {
3011     /* No-op. The closing } is written when a new function is started, and at the end of the shader. This
3012      * function only suppresses the unhandled instruction warning
3013      */
3014 }
3015
3016 /*********************************************
3017  * Pixel Shader Specific Code begins here
3018  ********************************************/
3019 static void shader_glsl_tex(const struct wined3d_shader_instruction *ins)
3020 {
3021     const struct wined3d_shader *shader = ins->ctx->shader;
3022     struct wined3d_device *device = shader->device;
3023     DWORD shader_version = WINED3D_SHADER_VERSION(ins->ctx->reg_maps->shader_version.major,
3024             ins->ctx->reg_maps->shader_version.minor);
3025     struct glsl_sample_function sample_function;
3026     const struct wined3d_texture *texture;
3027     DWORD sample_flags = 0;
3028     DWORD sampler_idx;
3029     DWORD mask = 0, swizzle;
3030
3031     /* 1.0-1.4: Use destination register as sampler source.
3032      * 2.0+: Use provided sampler source. */
3033     if (shader_version < WINED3D_SHADER_VERSION(2,0)) sampler_idx = ins->dst[0].reg.idx;
3034     else sampler_idx = ins->src[1].reg.idx;
3035     texture = device->stateBlock->state.textures[sampler_idx];
3036
3037     if (shader_version < WINED3D_SHADER_VERSION(1,4))
3038     {
3039         const struct shader_glsl_ctx_priv *priv = ins->ctx->backend_data;
3040         DWORD flags = (priv->cur_ps_args->tex_transform >> sampler_idx * WINED3D_PSARGS_TEXTRANSFORM_SHIFT)
3041                 & WINED3D_PSARGS_TEXTRANSFORM_MASK;
3042         enum wined3d_sampler_texture_type sampler_type = ins->ctx->reg_maps->sampler_type[sampler_idx];
3043
3044         /* Projected cube textures don't make a lot of sense, the resulting coordinates stay the same. */
3045         if (flags & WINED3D_PSARGS_PROJECTED && sampler_type != WINED3DSTT_CUBE) {
3046             sample_flags |= WINED3D_GLSL_SAMPLE_PROJECTED;
3047             switch (flags & ~WINED3D_PSARGS_PROJECTED) {
3048                 case WINED3DTTFF_COUNT1: FIXME("WINED3DTTFF_PROJECTED with WINED3DTTFF_COUNT1?\n"); break;
3049                 case WINED3DTTFF_COUNT2: mask = WINED3DSP_WRITEMASK_1; break;
3050                 case WINED3DTTFF_COUNT3: mask = WINED3DSP_WRITEMASK_2; break;
3051                 case WINED3DTTFF_COUNT4:
3052                 case WINED3DTTFF_DISABLE: mask = WINED3DSP_WRITEMASK_3; break;
3053             }
3054         }
3055     }
3056     else if (shader_version < WINED3D_SHADER_VERSION(2,0))
3057     {
3058         enum wined3d_shader_src_modifier src_mod = ins->src[0].modifiers;
3059
3060         if (src_mod == WINED3DSPSM_DZ) {
3061             sample_flags |= WINED3D_GLSL_SAMPLE_PROJECTED;
3062             mask = WINED3DSP_WRITEMASK_2;
3063         } else if (src_mod == WINED3DSPSM_DW) {
3064             sample_flags |= WINED3D_GLSL_SAMPLE_PROJECTED;
3065             mask = WINED3DSP_WRITEMASK_3;
3066         }
3067     } else {
3068         if (ins->flags & WINED3DSI_TEXLD_PROJECT)
3069         {
3070             /* ps 2.0 texldp instruction always divides by the fourth component. */
3071             sample_flags |= WINED3D_GLSL_SAMPLE_PROJECTED;
3072             mask = WINED3DSP_WRITEMASK_3;
3073         }
3074     }
3075
3076     if (texture && texture->target == GL_TEXTURE_RECTANGLE_ARB)
3077         sample_flags |= WINED3D_GLSL_SAMPLE_RECT;
3078
3079     shader_glsl_get_sample_function(ins->ctx, sampler_idx, sample_flags, &sample_function);
3080     mask |= sample_function.coord_mask;
3081
3082     if (shader_version < WINED3D_SHADER_VERSION(2,0)) swizzle = WINED3DSP_NOSWIZZLE;
3083     else swizzle = ins->src[1].swizzle;
3084
3085     /* 1.0-1.3: Use destination register as coordinate source.
3086        1.4+: Use provided coordinate source register. */
3087     if (shader_version < WINED3D_SHADER_VERSION(1,4))
3088     {
3089         char coord_mask[6];
3090         shader_glsl_write_mask_to_str(mask, coord_mask);
3091         shader_glsl_gen_sample_code(ins, sampler_idx, &sample_function, swizzle, NULL, NULL, NULL,
3092                 "T%u%s", sampler_idx, coord_mask);
3093     }
3094     else
3095     {
3096         struct glsl_src_param coord_param;
3097         shader_glsl_add_src_param(ins, &ins->src[0], mask, &coord_param);
3098         if (ins->flags & WINED3DSI_TEXLD_BIAS)
3099         {
3100             struct glsl_src_param bias;
3101             shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_3, &bias);
3102             shader_glsl_gen_sample_code(ins, sampler_idx, &sample_function, swizzle, NULL, NULL, bias.param_str,
3103                     "%s", coord_param.param_str);
3104         } else {
3105             shader_glsl_gen_sample_code(ins, sampler_idx, &sample_function, swizzle, NULL, NULL, NULL,
3106                     "%s", coord_param.param_str);
3107         }
3108     }
3109 }
3110
3111 static void shader_glsl_texldd(const struct wined3d_shader_instruction *ins)
3112 {
3113     const struct wined3d_shader *shader = ins->ctx->shader;
3114     struct wined3d_device *device = shader->device;
3115     const struct wined3d_gl_info *gl_info = ins->ctx->gl_info;
3116     struct glsl_src_param coord_param, dx_param, dy_param;
3117     DWORD sample_flags = WINED3D_GLSL_SAMPLE_GRAD;
3118     struct glsl_sample_function sample_function;
3119     DWORD sampler_idx;
3120     DWORD swizzle = ins->src[1].swizzle;
3121     const struct wined3d_texture *texture;
3122
3123     if (!gl_info->supported[ARB_SHADER_TEXTURE_LOD] && !gl_info->supported[EXT_GPU_SHADER4])
3124     {
3125         FIXME("texldd used, but not supported by hardware. Falling back to regular tex\n");
3126         shader_glsl_tex(ins);
3127         return;
3128     }
3129
3130     sampler_idx = ins->src[1].reg.idx;
3131     texture = device->stateBlock->state.textures[sampler_idx];
3132     if (texture && texture->target == GL_TEXTURE_RECTANGLE_ARB)
3133         sample_flags |= WINED3D_GLSL_SAMPLE_RECT;
3134
3135     shader_glsl_get_sample_function(ins->ctx, sampler_idx, sample_flags, &sample_function);
3136     shader_glsl_add_src_param(ins, &ins->src[0], sample_function.coord_mask, &coord_param);
3137     shader_glsl_add_src_param(ins, &ins->src[2], sample_function.coord_mask, &dx_param);
3138     shader_glsl_add_src_param(ins, &ins->src[3], sample_function.coord_mask, &dy_param);
3139
3140     shader_glsl_gen_sample_code(ins, sampler_idx, &sample_function, swizzle, dx_param.param_str, dy_param.param_str, NULL,
3141                                 "%s", coord_param.param_str);
3142 }
3143
3144 static void shader_glsl_texldl(const struct wined3d_shader_instruction *ins)
3145 {
3146     const struct wined3d_shader *shader = ins->ctx->shader;
3147     struct wined3d_device *device = shader->device;
3148     const struct wined3d_gl_info *gl_info = ins->ctx->gl_info;
3149     struct glsl_src_param coord_param, lod_param;
3150     DWORD sample_flags = WINED3D_GLSL_SAMPLE_LOD;
3151     struct glsl_sample_function sample_function;
3152     DWORD sampler_idx;
3153     DWORD swizzle = ins->src[1].swizzle;
3154     const struct wined3d_texture *texture;
3155
3156     sampler_idx = ins->src[1].reg.idx;
3157     texture = device->stateBlock->state.textures[sampler_idx];
3158     if (texture && texture->target == GL_TEXTURE_RECTANGLE_ARB)
3159         sample_flags |= WINED3D_GLSL_SAMPLE_RECT;
3160
3161     shader_glsl_get_sample_function(ins->ctx, sampler_idx, sample_flags, &sample_function);
3162     shader_glsl_add_src_param(ins, &ins->src[0], sample_function.coord_mask, &coord_param);
3163
3164     shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_3, &lod_param);
3165
3166     if (!gl_info->supported[ARB_SHADER_TEXTURE_LOD] && !gl_info->supported[EXT_GPU_SHADER4]
3167             && shader_is_pshader_version(ins->ctx->reg_maps->shader_version.type))
3168     {
3169         /* Plain GLSL only supports Lod sampling functions in vertex shaders.
3170          * However, the NVIDIA drivers allow them in fragment shaders as well,
3171          * even without the appropriate extension. */
3172         WARN("Using %s in fragment shader.\n", sample_function.name);
3173     }
3174     shader_glsl_gen_sample_code(ins, sampler_idx, &sample_function, swizzle, NULL, NULL, lod_param.param_str,
3175             "%s", coord_param.param_str);
3176 }
3177
3178 static void shader_glsl_texcoord(const struct wined3d_shader_instruction *ins)
3179 {
3180     /* FIXME: Make this work for more than just 2D textures */
3181     struct wined3d_shader_buffer *buffer = ins->ctx->buffer;
3182     DWORD write_mask = shader_glsl_append_dst(ins->ctx->buffer, ins);
3183
3184     if (!(ins->ctx->reg_maps->shader_version.major == 1 && ins->ctx->reg_maps->shader_version.minor == 4))
3185     {
3186         char dst_mask[6];
3187
3188         shader_glsl_get_write_mask(&ins->dst[0], dst_mask);
3189         shader_addline(buffer, "clamp(gl_TexCoord[%u], 0.0, 1.0)%s);\n",
3190                 ins->dst[0].reg.idx, dst_mask);
3191     }
3192     else
3193     {
3194         enum wined3d_shader_src_modifier src_mod = ins->src[0].modifiers;
3195         DWORD reg = ins->src[0].reg.idx;
3196         char dst_swizzle[6];
3197
3198         shader_glsl_get_swizzle(&ins->src[0], FALSE, write_mask, dst_swizzle);
3199
3200         if (src_mod == WINED3DSPSM_DZ)
3201         {
3202             unsigned int mask_size = shader_glsl_get_write_mask_size(write_mask);
3203             struct glsl_src_param div_param;
3204
3205             shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_2, &div_param);
3206
3207             if (mask_size > 1) {
3208                 shader_addline(buffer, "gl_TexCoord[%u]%s / vec%d(%s));\n", reg, dst_swizzle, mask_size, div_param.param_str);
3209             } else {
3210                 shader_addline(buffer, "gl_TexCoord[%u]%s / %s);\n", reg, dst_swizzle, div_param.param_str);
3211             }
3212         }
3213         else if (src_mod == WINED3DSPSM_DW)
3214         {
3215             unsigned int mask_size = shader_glsl_get_write_mask_size(write_mask);
3216             struct glsl_src_param div_param;
3217
3218             shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_3, &div_param);
3219
3220             if (mask_size > 1) {
3221                 shader_addline(buffer, "gl_TexCoord[%u]%s / vec%d(%s));\n", reg, dst_swizzle, mask_size, div_param.param_str);
3222             } else {
3223                 shader_addline(buffer, "gl_TexCoord[%u]%s / %s);\n", reg, dst_swizzle, div_param.param_str);
3224             }
3225         } else {
3226             shader_addline(buffer, "gl_TexCoord[%u]%s);\n", reg, dst_swizzle);
3227         }
3228     }
3229 }
3230
3231 /** Process the WINED3DSIO_TEXDP3TEX instruction in GLSL:
3232  * Take a 3-component dot product of the TexCoord[dstreg] and src,
3233  * then perform a 1D texture lookup from stage dstregnum, place into dst. */
3234 static void shader_glsl_texdp3tex(const struct wined3d_shader_instruction *ins)
3235 {
3236     DWORD sampler_idx = ins->dst[0].reg.idx;
3237     DWORD src_mask = WINED3DSP_WRITEMASK_0 | WINED3DSP_WRITEMASK_1 | WINED3DSP_WRITEMASK_2;
3238     struct glsl_sample_function sample_function;
3239     struct glsl_src_param src0_param;
3240     UINT mask_size;
3241
3242     shader_glsl_add_src_param(ins, &ins->src[0], src_mask, &src0_param);
3243
3244     /* Do I have to take care about the projected bit? I don't think so, since the dp3 returns only one
3245      * scalar, and projected sampling would require 4.
3246      *
3247      * It is a dependent read - not valid with conditional NP2 textures
3248      */
3249     shader_glsl_get_sample_function(ins->ctx, sampler_idx, 0, &sample_function);
3250     mask_size = shader_glsl_get_write_mask_size(sample_function.coord_mask);
3251
3252     switch(mask_size)
3253     {
3254         case 1:
3255             shader_glsl_gen_sample_code(ins, sampler_idx, &sample_function, WINED3DSP_NOSWIZZLE, NULL, NULL, NULL,
3256                     "dot(gl_TexCoord[%u].xyz, %s)", sampler_idx, src0_param.param_str);
3257             break;
3258
3259         case 2:
3260             shader_glsl_gen_sample_code(ins, sampler_idx, &sample_function, WINED3DSP_NOSWIZZLE, NULL, NULL, NULL,
3261                     "vec2(dot(gl_TexCoord[%u].xyz, %s), 0.0)", sampler_idx, src0_param.param_str);
3262             break;
3263
3264         case 3:
3265             shader_glsl_gen_sample_code(ins, sampler_idx, &sample_function, WINED3DSP_NOSWIZZLE, NULL, NULL, NULL,
3266                     "vec3(dot(gl_TexCoord[%u].xyz, %s), 0.0, 0.0)", sampler_idx, src0_param.param_str);
3267             break;
3268
3269         default:
3270             FIXME("Unexpected mask size %u\n", mask_size);
3271             break;
3272     }
3273 }
3274
3275 /** Process the WINED3DSIO_TEXDP3 instruction in GLSL:
3276  * Take a 3-component dot product of the TexCoord[dstreg] and src. */
3277 static void shader_glsl_texdp3(const struct wined3d_shader_instruction *ins)
3278 {
3279     DWORD dstreg = ins->dst[0].reg.idx;
3280     DWORD src_mask = WINED3DSP_WRITEMASK_0 | WINED3DSP_WRITEMASK_1 | WINED3DSP_WRITEMASK_2;
3281     struct glsl_src_param src0_param;
3282     DWORD dst_mask;
3283     unsigned int mask_size;
3284
3285     dst_mask = shader_glsl_append_dst(ins->ctx->buffer, ins);
3286     mask_size = shader_glsl_get_write_mask_size(dst_mask);
3287     shader_glsl_add_src_param(ins, &ins->src[0], src_mask, &src0_param);
3288
3289     if (mask_size > 1) {
3290         shader_addline(ins->ctx->buffer, "vec%d(dot(T%u.xyz, %s)));\n", mask_size, dstreg, src0_param.param_str);
3291     } else {
3292         shader_addline(ins->ctx->buffer, "dot(T%u.xyz, %s));\n", dstreg, src0_param.param_str);
3293     }
3294 }
3295
3296 /** Process the WINED3DSIO_TEXDEPTH instruction in GLSL:
3297  * Calculate the depth as dst.x / dst.y   */
3298 static void shader_glsl_texdepth(const struct wined3d_shader_instruction *ins)
3299 {
3300     struct glsl_dst_param dst_param;
3301
3302     shader_glsl_add_dst_param(ins, &ins->dst[0], &dst_param);
3303
3304     /* Tests show that texdepth never returns anything below 0.0, and that r5.y is clamped to 1.0.
3305      * Negative input is accepted, -0.25 / -0.5 returns 0.5. GL should clamp gl_FragDepth to [0;1], but
3306      * this doesn't always work, so clamp the results manually. Whether or not the x value is clamped at 1
3307      * too is irrelevant, since if x = 0, any y value < 1.0 (and > 1.0 is not allowed) results in a result
3308      * >= 1.0 or < 0.0
3309      */
3310     shader_addline(ins->ctx->buffer, "gl_FragDepth = clamp((%s.x / min(%s.y, 1.0)), 0.0, 1.0);\n",
3311             dst_param.reg_name, dst_param.reg_name);
3312 }
3313
3314 /** Process the WINED3DSIO_TEXM3X2DEPTH instruction in GLSL:
3315  * Last row of a 3x2 matrix multiply, use the result to calculate the depth:
3316  * Calculate tmp0.y = TexCoord[dstreg] . src.xyz;  (tmp0.x has already been calculated)
3317  * depth = (tmp0.y == 0.0) ? 1.0 : tmp0.x / tmp0.y
3318  */
3319 static void shader_glsl_texm3x2depth(const struct wined3d_shader_instruction *ins)
3320 {
3321     DWORD src_mask = WINED3DSP_WRITEMASK_0 | WINED3DSP_WRITEMASK_1 | WINED3DSP_WRITEMASK_2;
3322     DWORD dstreg = ins->dst[0].reg.idx;
3323     struct glsl_src_param src0_param;
3324
3325     shader_glsl_add_src_param(ins, &ins->src[0], src_mask, &src0_param);
3326
3327     shader_addline(ins->ctx->buffer, "tmp0.y = dot(T%u.xyz, %s);\n", dstreg, src0_param.param_str);
3328     shader_addline(ins->ctx->buffer, "gl_FragDepth = (tmp0.y == 0.0) ? 1.0 : clamp(tmp0.x / tmp0.y, 0.0, 1.0);\n");
3329 }
3330
3331 /** Process the WINED3DSIO_TEXM3X2PAD instruction in GLSL
3332  * Calculate the 1st of a 2-row matrix multiplication. */
3333 static void shader_glsl_texm3x2pad(const struct wined3d_shader_instruction *ins)
3334 {
3335     DWORD src_mask = WINED3DSP_WRITEMASK_0 | WINED3DSP_WRITEMASK_1 | WINED3DSP_WRITEMASK_2;
3336     DWORD reg = ins->dst[0].reg.idx;
3337     struct wined3d_shader_buffer *buffer = ins->ctx->buffer;
3338     struct glsl_src_param src0_param;
3339
3340     shader_glsl_add_src_param(ins, &ins->src[0], src_mask, &src0_param);
3341     shader_addline(buffer, "tmp0.x = dot(T%u.xyz, %s);\n", reg, src0_param.param_str);
3342 }
3343
3344 /** Process the WINED3DSIO_TEXM3X3PAD instruction in GLSL
3345  * Calculate the 1st or 2nd row of a 3-row matrix multiplication. */
3346 static void shader_glsl_texm3x3pad(const struct wined3d_shader_instruction *ins)
3347 {
3348     DWORD src_mask = WINED3DSP_WRITEMASK_0 | WINED3DSP_WRITEMASK_1 | WINED3DSP_WRITEMASK_2;
3349     DWORD reg = ins->dst[0].reg.idx;
3350     struct wined3d_shader_buffer *buffer = ins->ctx->buffer;
3351     struct wined3d_shader_tex_mx *tex_mx = ins->ctx->tex_mx;
3352     struct glsl_src_param src0_param;
3353
3354     shader_glsl_add_src_param(ins, &ins->src[0], src_mask, &src0_param);
3355     shader_addline(buffer, "tmp0.%c = dot(T%u.xyz, %s);\n", 'x' + tex_mx->current_row, reg, src0_param.param_str);
3356     tex_mx->texcoord_w[tex_mx->current_row++] = reg;
3357 }
3358
3359 static void shader_glsl_texm3x2tex(const struct wined3d_shader_instruction *ins)
3360 {
3361     DWORD src_mask = WINED3DSP_WRITEMASK_0 | WINED3DSP_WRITEMASK_1 | WINED3DSP_WRITEMASK_2;
3362     DWORD reg = ins->dst[0].reg.idx;
3363     struct wined3d_shader_buffer *buffer = ins->ctx->buffer;
3364     struct glsl_sample_function sample_function;
3365     struct glsl_src_param src0_param;
3366
3367     shader_glsl_add_src_param(ins, &ins->src[0], src_mask, &src0_param);
3368     shader_addline(buffer, "tmp0.y = dot(T%u.xyz, %s);\n", reg, src0_param.param_str);
3369
3370     shader_glsl_get_sample_function(ins->ctx, reg, 0, &sample_function);
3371
3372     /* Sample the texture using the calculated coordinates */
3373     shader_glsl_gen_sample_code(ins, reg, &sample_function, WINED3DSP_NOSWIZZLE, NULL, NULL, NULL, "tmp0.xy");
3374 }
3375
3376 /** Process the WINED3DSIO_TEXM3X3TEX instruction in GLSL
3377  * Perform the 3rd row of a 3x3 matrix multiply, then sample the texture using the calculated coordinates */
3378 static void shader_glsl_texm3x3tex(const struct wined3d_shader_instruction *ins)
3379 {
3380     DWORD src_mask = WINED3DSP_WRITEMASK_0 | WINED3DSP_WRITEMASK_1 | WINED3DSP_WRITEMASK_2;
3381     struct wined3d_shader_tex_mx *tex_mx = ins->ctx->tex_mx;
3382     struct glsl_sample_function sample_function;
3383     struct glsl_src_param src0_param;
3384     DWORD reg = ins->dst[0].reg.idx;
3385
3386     shader_glsl_add_src_param(ins, &ins->src[0], src_mask, &src0_param);
3387     shader_addline(ins->ctx->buffer, "tmp0.z = dot(T%u.xyz, %s);\n", reg, src0_param.param_str);
3388
3389     /* Dependent read, not valid with conditional NP2 */
3390     shader_glsl_get_sample_function(ins->ctx, reg, 0, &sample_function);
3391
3392     /* Sample the texture using the calculated coordinates */
3393     shader_glsl_gen_sample_code(ins, reg, &sample_function, WINED3DSP_NOSWIZZLE, NULL, NULL, NULL, "tmp0.xyz");
3394
3395     tex_mx->current_row = 0;
3396 }
3397
3398 /** Process the WINED3DSIO_TEXM3X3 instruction in GLSL
3399  * Perform the 3rd row of a 3x3 matrix multiply */
3400 static void shader_glsl_texm3x3(const struct wined3d_shader_instruction *ins)
3401 {
3402     DWORD src_mask = WINED3DSP_WRITEMASK_0 | WINED3DSP_WRITEMASK_1 | WINED3DSP_WRITEMASK_2;
3403     struct wined3d_shader_tex_mx *tex_mx = ins->ctx->tex_mx;
3404     struct glsl_src_param src0_param;
3405     char dst_mask[6];
3406     DWORD reg = ins->dst[0].reg.idx;
3407
3408     shader_glsl_add_src_param(ins, &ins->src[0], src_mask, &src0_param);
3409
3410     shader_glsl_append_dst(ins->ctx->buffer, ins);
3411     shader_glsl_get_write_mask(&ins->dst[0], dst_mask);
3412     shader_addline(ins->ctx->buffer, "vec4(tmp0.xy, dot(T%u.xyz, %s), 1.0)%s);\n", reg, src0_param.param_str, dst_mask);
3413
3414     tex_mx->current_row = 0;
3415 }
3416
3417 /* Process the WINED3DSIO_TEXM3X3SPEC instruction in GLSL
3418  * Perform the final texture lookup based on the previous 2 3x3 matrix multiplies */
3419 static void shader_glsl_texm3x3spec(const struct wined3d_shader_instruction *ins)
3420 {
3421     struct glsl_src_param src0_param;
3422     struct glsl_src_param src1_param;
3423     DWORD reg = ins->dst[0].reg.idx;
3424     struct wined3d_shader_buffer *buffer = ins->ctx->buffer;
3425     struct wined3d_shader_tex_mx *tex_mx = ins->ctx->tex_mx;
3426     DWORD src_mask = WINED3DSP_WRITEMASK_0 | WINED3DSP_WRITEMASK_1 | WINED3DSP_WRITEMASK_2;
3427     struct glsl_sample_function sample_function;
3428
3429     shader_glsl_add_src_param(ins, &ins->src[0], src_mask, &src0_param);
3430     shader_glsl_add_src_param(ins, &ins->src[1], src_mask, &src1_param);
3431
3432     /* Perform the last matrix multiply operation */
3433     shader_addline(buffer, "tmp0.z = dot(T%u.xyz, %s);\n", reg, src0_param.param_str);
3434     /* Reflection calculation */
3435     shader_addline(buffer, "tmp0.xyz = -reflect((%s), normalize(tmp0.xyz));\n", src1_param.param_str);
3436
3437     /* Dependent read, not valid with conditional NP2 */
3438     shader_glsl_get_sample_function(ins->ctx, reg, 0, &sample_function);
3439
3440     /* Sample the texture */
3441     shader_glsl_gen_sample_code(ins, reg, &sample_function, WINED3DSP_NOSWIZZLE, NULL, NULL, NULL, "tmp0.xyz");
3442
3443     tex_mx->current_row = 0;
3444 }
3445
3446 /* Process the WINED3DSIO_TEXM3X3VSPEC instruction in GLSL
3447  * Perform the final texture lookup based on the previous 2 3x3 matrix multiplies */
3448 static void shader_glsl_texm3x3vspec(const struct wined3d_shader_instruction *ins)
3449 {
3450     DWORD reg = ins->dst[0].reg.idx;
3451     struct wined3d_shader_buffer *buffer = ins->ctx->buffer;
3452     struct wined3d_shader_tex_mx *tex_mx = ins->ctx->tex_mx;
3453     DWORD src_mask = WINED3DSP_WRITEMASK_0 | WINED3DSP_WRITEMASK_1 | WINED3DSP_WRITEMASK_2;
3454     struct glsl_sample_function sample_function;
3455     struct glsl_src_param src0_param;
3456
3457     shader_glsl_add_src_param(ins, &ins->src[0], src_mask, &src0_param);
3458
3459     /* Perform the last matrix multiply operation */
3460     shader_addline(buffer, "tmp0.z = dot(vec3(T%u), vec3(%s));\n", reg, src0_param.param_str);
3461
3462     /* Construct the eye-ray vector from w coordinates */
3463     shader_addline(buffer, "tmp1.xyz = normalize(vec3(gl_TexCoord[%u].w, gl_TexCoord[%u].w, gl_TexCoord[%u].w));\n",
3464             tex_mx->texcoord_w[0], tex_mx->texcoord_w[1], reg);
3465     shader_addline(buffer, "tmp0.xyz = -reflect(tmp1.xyz, normalize(tmp0.xyz));\n");
3466
3467     /* Dependent read, not valid with conditional NP2 */
3468     shader_glsl_get_sample_function(ins->ctx, reg, 0, &sample_function);
3469
3470     /* Sample the texture using the calculated coordinates */
3471     shader_glsl_gen_sample_code(ins, reg, &sample_function, WINED3DSP_NOSWIZZLE, NULL, NULL, NULL, "tmp0.xyz");
3472
3473     tex_mx->current_row = 0;
3474 }
3475
3476 /** Process the WINED3DSIO_TEXBEM instruction in GLSL.
3477  * Apply a fake bump map transform.
3478  * texbem is pshader <= 1.3 only, this saves a few version checks
3479  */
3480 static void shader_glsl_texbem(const struct wined3d_shader_instruction *ins)
3481 {
3482     const struct shader_glsl_ctx_priv *priv = ins->ctx->backend_data;
3483     struct glsl_sample_function sample_function;
3484     struct glsl_src_param coord_param;
3485     DWORD sampler_idx;
3486     DWORD mask;
3487     DWORD flags;
3488     char coord_mask[6];
3489
3490     sampler_idx = ins->dst[0].reg.idx;
3491     flags = (priv->cur_ps_args->tex_transform >> sampler_idx * WINED3D_PSARGS_TEXTRANSFORM_SHIFT)
3492             & WINED3D_PSARGS_TEXTRANSFORM_MASK;
3493
3494     /* Dependent read, not valid with conditional NP2 */
3495     shader_glsl_get_sample_function(ins->ctx, sampler_idx, 0, &sample_function);
3496     mask = sample_function.coord_mask;
3497
3498     shader_glsl_write_mask_to_str(mask, coord_mask);
3499
3500     /* with projective textures, texbem only divides the static texture coord, not the displacement,
3501          * so we can't let the GL handle this.
3502          */
3503     if (flags & WINED3D_PSARGS_PROJECTED) {
3504         DWORD div_mask=0;
3505         char coord_div_mask[3];
3506         switch (flags & ~WINED3D_PSARGS_PROJECTED) {
3507             case WINED3DTTFF_COUNT1: FIXME("WINED3DTTFF_PROJECTED with WINED3DTTFF_COUNT1?\n"); break;
3508             case WINED3DTTFF_COUNT2: div_mask = WINED3DSP_WRITEMASK_1; break;
3509             case WINED3DTTFF_COUNT3: div_mask = WINED3DSP_WRITEMASK_2; break;
3510             case WINED3DTTFF_COUNT4:
3511             case WINED3DTTFF_DISABLE: div_mask = WINED3DSP_WRITEMASK_3; break;
3512         }
3513         shader_glsl_write_mask_to_str(div_mask, coord_div_mask);
3514         shader_addline(ins->ctx->buffer, "T%u%s /= T%u%s;\n", sampler_idx, coord_mask, sampler_idx, coord_div_mask);
3515     }
3516
3517     shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_0 | WINED3DSP_WRITEMASK_1, &coord_param);
3518
3519     shader_glsl_gen_sample_code(ins, sampler_idx, &sample_function, WINED3DSP_NOSWIZZLE, NULL, NULL, NULL,
3520             "T%u%s + vec4(bumpenvmat%d * %s, 0.0, 0.0)%s", sampler_idx, coord_mask, sampler_idx,
3521             coord_param.param_str, coord_mask);
3522
3523     if (ins->handler_idx == WINED3DSIH_TEXBEML)
3524     {
3525         struct glsl_src_param luminance_param;
3526         struct glsl_dst_param dst_param;
3527
3528         shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_2, &luminance_param);
3529         shader_glsl_add_dst_param(ins, &ins->dst[0], &dst_param);
3530
3531         shader_addline(ins->ctx->buffer, "%s%s *= (%s * luminancescale%d + luminanceoffset%d);\n",
3532                 dst_param.reg_name, dst_param.mask_str,
3533                 luminance_param.param_str, sampler_idx, sampler_idx);
3534     }
3535 }
3536
3537 static void shader_glsl_bem(const struct wined3d_shader_instruction *ins)
3538 {
3539     struct glsl_src_param src0_param, src1_param;
3540     DWORD sampler_idx = ins->dst[0].reg.idx;
3541
3542     shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_0 | WINED3DSP_WRITEMASK_1, &src0_param);
3543     shader_glsl_add_src_param(ins, &ins->src[1], WINED3DSP_WRITEMASK_0 | WINED3DSP_WRITEMASK_1, &src1_param);
3544
3545     shader_glsl_append_dst(ins->ctx->buffer, ins);
3546     shader_addline(ins->ctx->buffer, "%s + bumpenvmat%d * %s);\n",
3547             src0_param.param_str, sampler_idx, src1_param.param_str);
3548 }
3549
3550 /** Process the WINED3DSIO_TEXREG2AR instruction in GLSL
3551  * Sample 2D texture at dst using the alpha & red (wx) components of src as texture coordinates */
3552 static void shader_glsl_texreg2ar(const struct wined3d_shader_instruction *ins)
3553 {
3554     struct glsl_sample_function sample_function;
3555     struct glsl_src_param src0_param;
3556     DWORD sampler_idx = ins->dst[0].reg.idx;
3557
3558     shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_ALL, &src0_param);
3559
3560     shader_glsl_get_sample_function(ins->ctx, sampler_idx, 0, &sample_function);
3561     shader_glsl_gen_sample_code(ins, sampler_idx, &sample_function, WINED3DSP_NOSWIZZLE, NULL, NULL, NULL,
3562             "%s.wx", src0_param.reg_name);
3563 }
3564
3565 /** Process the WINED3DSIO_TEXREG2GB instruction in GLSL
3566  * Sample 2D texture at dst using the green & blue (yz) components of src as texture coordinates */
3567 static void shader_glsl_texreg2gb(const struct wined3d_shader_instruction *ins)
3568 {
3569     struct glsl_sample_function sample_function;
3570     struct glsl_src_param src0_param;
3571     DWORD sampler_idx = ins->dst[0].reg.idx;
3572
3573     shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_ALL, &src0_param);
3574
3575     shader_glsl_get_sample_function(ins->ctx, sampler_idx, 0, &sample_function);
3576     shader_glsl_gen_sample_code(ins, sampler_idx, &sample_function, WINED3DSP_NOSWIZZLE, NULL, NULL, NULL,
3577             "%s.yz", src0_param.reg_name);
3578 }
3579
3580 /** Process the WINED3DSIO_TEXREG2RGB instruction in GLSL
3581  * Sample texture at dst using the rgb (xyz) components of src as texture coordinates */
3582 static void shader_glsl_texreg2rgb(const struct wined3d_shader_instruction *ins)
3583 {
3584     struct glsl_sample_function sample_function;
3585     struct glsl_src_param src0_param;
3586     DWORD sampler_idx = ins->dst[0].reg.idx;
3587
3588     /* Dependent read, not valid with conditional NP2 */
3589     shader_glsl_get_sample_function(ins->ctx, sampler_idx, 0, &sample_function);
3590     shader_glsl_add_src_param(ins, &ins->src[0], sample_function.coord_mask, &src0_param);
3591
3592     shader_glsl_gen_sample_code(ins, sampler_idx, &sample_function, WINED3DSP_NOSWIZZLE, NULL, NULL, NULL,
3593             "%s", src0_param.param_str);
3594 }
3595
3596 /** Process the WINED3DSIO_TEXKILL instruction in GLSL.
3597  * If any of the first 3 components are < 0, discard this pixel */
3598 static void shader_glsl_texkill(const struct wined3d_shader_instruction *ins)
3599 {
3600     struct glsl_dst_param dst_param;
3601
3602     /* The argument is a destination parameter, and no writemasks are allowed */
3603     shader_glsl_add_dst_param(ins, &ins->dst[0], &dst_param);
3604     if (ins->ctx->reg_maps->shader_version.major >= 2)
3605     {
3606         /* 2.0 shaders compare all 4 components in texkill */
3607         shader_addline(ins->ctx->buffer, "if (any(lessThan(%s.xyzw, vec4(0.0)))) discard;\n", dst_param.reg_name);
3608     } else {
3609         /* 1.X shaders only compare the first 3 components, probably due to the nature of the texkill
3610          * instruction as a tex* instruction, and phase, which kills all a / w components. Even if all
3611          * 4 components are defined, only the first 3 are used
3612          */
3613         shader_addline(ins->ctx->buffer, "if (any(lessThan(%s.xyz, vec3(0.0)))) discard;\n", dst_param.reg_name);
3614     }
3615 }
3616
3617 /** Process the WINED3DSIO_DP2ADD instruction in GLSL.
3618  * dst = dot2(src0, src1) + src2 */
3619 static void shader_glsl_dp2add(const struct wined3d_shader_instruction *ins)
3620 {
3621     struct glsl_src_param src0_param;
3622     struct glsl_src_param src1_param;
3623     struct glsl_src_param src2_param;
3624     DWORD write_mask;
3625     unsigned int mask_size;
3626
3627     write_mask = shader_glsl_append_dst(ins->ctx->buffer, ins);
3628     mask_size = shader_glsl_get_write_mask_size(write_mask);
3629
3630     shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_0 | WINED3DSP_WRITEMASK_1, &src0_param);
3631     shader_glsl_add_src_param(ins, &ins->src[1], WINED3DSP_WRITEMASK_0 | WINED3DSP_WRITEMASK_1, &src1_param);
3632     shader_glsl_add_src_param(ins, &ins->src[2], WINED3DSP_WRITEMASK_0, &src2_param);
3633
3634     if (mask_size > 1) {
3635         shader_addline(ins->ctx->buffer, "vec%d(dot(%s, %s) + %s));\n",
3636                 mask_size, src0_param.param_str, src1_param.param_str, src2_param.param_str);
3637     } else {
3638         shader_addline(ins->ctx->buffer, "dot(%s, %s) + %s);\n",
3639                 src0_param.param_str, src1_param.param_str, src2_param.param_str);
3640     }
3641 }
3642
3643 static void shader_glsl_input_pack(const struct wined3d_shader *shader, struct wined3d_shader_buffer *buffer,
3644         const struct wined3d_shader_signature_element *input_signature,
3645         const struct wined3d_shader_reg_maps *reg_maps,
3646         enum vertexprocessing_mode vertexprocessing)
3647 {
3648     WORD map = reg_maps->input_registers;
3649     unsigned int i;
3650
3651     for (i = 0; map; map >>= 1, ++i)
3652     {
3653         const char *semantic_name;
3654         UINT semantic_idx;
3655         char reg_mask[6];
3656
3657         /* Unused */
3658         if (!(map & 1)) continue;
3659
3660         semantic_name = input_signature[i].semantic_name;
3661         semantic_idx = input_signature[i].semantic_idx;
3662         shader_glsl_write_mask_to_str(input_signature[i].mask, reg_mask);
3663
3664         if (shader_match_semantic(semantic_name, WINED3DDECLUSAGE_TEXCOORD))
3665         {
3666             if (semantic_idx < 8 && vertexprocessing == pretransformed)
3667                 shader_addline(buffer, "IN[%u]%s = gl_TexCoord[%u]%s;\n",
3668                         shader->u.ps.input_reg_map[i], reg_mask, semantic_idx, reg_mask);
3669             else
3670                 shader_addline(buffer, "IN[%u]%s = vec4(0.0, 0.0, 0.0, 0.0)%s;\n",
3671                         shader->u.ps.input_reg_map[i], reg_mask, reg_mask);
3672         }
3673         else if (shader_match_semantic(semantic_name, WINED3DDECLUSAGE_COLOR))
3674         {
3675             if (!semantic_idx)
3676                 shader_addline(buffer, "IN[%u]%s = vec4(gl_Color)%s;\n",
3677                         shader->u.ps.input_reg_map[i], reg_mask, reg_mask);
3678             else if (semantic_idx == 1)
3679                 shader_addline(buffer, "IN[%u]%s = vec4(gl_SecondaryColor)%s;\n",
3680                         shader->u.ps.input_reg_map[i], reg_mask, reg_mask);
3681             else
3682                 shader_addline(buffer, "IN[%u]%s = vec4(0.0, 0.0, 0.0, 0.0)%s;\n",
3683                         shader->u.ps.input_reg_map[i], reg_mask, reg_mask);
3684         }
3685         else
3686         {
3687             shader_addline(buffer, "IN[%u]%s = vec4(0.0, 0.0, 0.0, 0.0)%s;\n",
3688                     shader->u.ps.input_reg_map[i], reg_mask, reg_mask);
3689         }
3690     }
3691 }
3692
3693 /*********************************************
3694  * Vertex Shader Specific Code begins here
3695  ********************************************/
3696
3697 static void add_glsl_program_entry(struct shader_glsl_priv *priv, struct glsl_shader_prog_link *entry)
3698 {
3699     struct glsl_program_key key;
3700
3701     key.vshader = entry->vshader;
3702     key.pshader = entry->pshader;
3703     key.vs_args = entry->vs_args;
3704     key.ps_args = entry->ps_args;
3705
3706     if (wine_rb_put(&priv->program_lookup, &key, &entry->program_lookup_entry) == -1)
3707     {
3708         ERR("Failed to insert program entry.\n");
3709     }
3710 }
3711
3712 static struct glsl_shader_prog_link *get_glsl_program_entry(const struct shader_glsl_priv *priv,
3713         const struct wined3d_shader *vshader, const struct wined3d_shader *pshader,
3714         const struct vs_compile_args *vs_args, const struct ps_compile_args *ps_args)
3715 {
3716     struct wine_rb_entry *entry;
3717     struct glsl_program_key key;
3718
3719     key.vshader = vshader;
3720     key.pshader = pshader;
3721     key.vs_args = *vs_args;
3722     key.ps_args = *ps_args;
3723
3724     entry = wine_rb_get(&priv->program_lookup, &key);
3725     return entry ? WINE_RB_ENTRY_VALUE(entry, struct glsl_shader_prog_link, program_lookup_entry) : NULL;
3726 }
3727
3728 /* GL locking is done by the caller */
3729 static void delete_glsl_program_entry(struct shader_glsl_priv *priv, const struct wined3d_gl_info *gl_info,
3730         struct glsl_shader_prog_link *entry)
3731 {
3732     struct glsl_program_key key;
3733
3734     key.vshader = entry->vshader;
3735     key.pshader = entry->pshader;
3736     key.vs_args = entry->vs_args;
3737     key.ps_args = entry->ps_args;
3738     wine_rb_remove(&priv->program_lookup, &key);
3739
3740     GL_EXTCALL(glDeleteObjectARB(entry->programId));
3741     if (entry->vshader) list_remove(&entry->vshader_entry);
3742     if (entry->pshader) list_remove(&entry->pshader_entry);
3743     HeapFree(GetProcessHeap(), 0, entry->vuniformF_locations);
3744     HeapFree(GetProcessHeap(), 0, entry->puniformF_locations);
3745     HeapFree(GetProcessHeap(), 0, entry);
3746 }
3747
3748 static void handle_ps3_input(struct wined3d_shader_buffer *buffer,
3749         const struct wined3d_gl_info *gl_info, const DWORD *map,
3750         const struct wined3d_shader_signature_element *input_signature,
3751         const struct wined3d_shader_reg_maps *reg_maps_in,
3752         const struct wined3d_shader_signature_element *output_signature,
3753         const struct wined3d_shader_reg_maps *reg_maps_out)
3754 {
3755     unsigned int i, j;
3756     const char *semantic_name_in;
3757     UINT semantic_idx_in;
3758     DWORD *set;
3759     DWORD in_idx;
3760     unsigned int in_count = vec4_varyings(3, gl_info);
3761     char reg_mask[6];
3762     char destination[50];
3763     WORD input_map, output_map;
3764
3765     set = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*set) * (in_count + 2));
3766
3767     input_map = reg_maps_in->input_registers;
3768     for (i = 0; input_map; input_map >>= 1, ++i)
3769     {
3770         if (!(input_map & 1)) continue;
3771
3772         in_idx = map[i];
3773         /* Declared, but not read register */
3774         if (in_idx == ~0U) continue;
3775         if (in_idx >= (in_count + 2))
3776         {
3777             FIXME("More input varyings declared than supported, expect issues.\n");
3778             continue;
3779         }
3780
3781         if (in_idx == in_count) {
3782             sprintf(destination, "gl_FrontColor");
3783         } else if (in_idx == in_count + 1) {
3784             sprintf(destination, "gl_FrontSecondaryColor");
3785         } else {
3786             sprintf(destination, "IN[%u]", in_idx);
3787         }
3788
3789         semantic_name_in = input_signature[i].semantic_name;
3790         semantic_idx_in = input_signature[i].semantic_idx;
3791         set[in_idx] = ~0U;
3792
3793         output_map = reg_maps_out->output_registers;
3794         for (j = 0; output_map; output_map >>= 1, ++j)
3795         {
3796             DWORD mask;
3797
3798             if (!(output_map & 1)
3799                     || semantic_idx_in != output_signature[j].semantic_idx
3800                     || strcmp(semantic_name_in, output_signature[j].semantic_name)
3801                     || !(mask = input_signature[i].mask & output_signature[j].mask))
3802                 continue;
3803
3804             set[in_idx] = mask;
3805             shader_glsl_write_mask_to_str(mask, reg_mask);
3806
3807             shader_addline(buffer, "%s%s = OUT[%u]%s;\n",
3808                     destination, reg_mask, j, reg_mask);
3809         }
3810     }
3811
3812     for (i = 0; i < in_count + 2; ++i)
3813     {
3814         unsigned int size;
3815
3816         if (!set[i] || set[i] == WINED3DSP_WRITEMASK_ALL)
3817             continue;
3818
3819         if (set[i] == ~0U) set[i] = 0;
3820
3821         size = 0;
3822         if (!(set[i] & WINED3DSP_WRITEMASK_0)) reg_mask[size++] = 'x';
3823         if (!(set[i] & WINED3DSP_WRITEMASK_1)) reg_mask[size++] = 'y';
3824         if (!(set[i] & WINED3DSP_WRITEMASK_2)) reg_mask[size++] = 'z';
3825         if (!(set[i] & WINED3DSP_WRITEMASK_3)) reg_mask[size++] = 'w';
3826         reg_mask[size] = '\0';
3827
3828         if (i == in_count) sprintf(destination, "gl_FrontColor");
3829         else if (i == in_count + 1) sprintf(destination, "gl_FrontSecondaryColor");
3830         else sprintf(destination, "IN[%u]", i);
3831
3832         if (size == 1) shader_addline(buffer, "%s.%s = 0.0;\n", destination, reg_mask);
3833         else shader_addline(buffer, "%s.%s = vec%u(0.0);\n", destination, reg_mask, size);
3834     }
3835
3836     HeapFree(GetProcessHeap(), 0, set);
3837 }
3838
3839 /* GL locking is done by the caller */
3840 static GLhandleARB generate_param_reorder_function(struct wined3d_shader_buffer *buffer,
3841         const struct wined3d_shader *vs, const struct wined3d_shader *ps,
3842         const struct wined3d_gl_info *gl_info)
3843 {
3844     GLhandleARB ret = 0;
3845     DWORD ps_major = ps ? ps->reg_maps.shader_version.major : 0;
3846     unsigned int i;
3847     const char *semantic_name;
3848     UINT semantic_idx;
3849     char reg_mask[6];
3850     const struct wined3d_shader_signature_element *output_signature = vs->output_signature;
3851     WORD map = vs->reg_maps.output_registers;
3852
3853     shader_buffer_clear(buffer);
3854
3855     shader_addline(buffer, "#version 120\n");
3856
3857     if (ps_major < 3)
3858     {
3859         shader_addline(buffer, "void order_ps_input(in vec4 OUT[%u]) {\n", MAX_REG_OUTPUT);
3860
3861         for (i = 0; map; map >>= 1, ++i)
3862         {
3863             DWORD write_mask;
3864
3865             if (!(map & 1)) continue;
3866
3867             semantic_name = output_signature[i].semantic_name;
3868             semantic_idx = output_signature[i].semantic_idx;
3869             write_mask = output_signature[i].mask;
3870             shader_glsl_write_mask_to_str(write_mask, reg_mask);
3871
3872             if (shader_match_semantic(semantic_name, WINED3DDECLUSAGE_COLOR))
3873             {
3874                 if (!semantic_idx)
3875                     shader_addline(buffer, "gl_FrontColor%s = OUT[%u]%s;\n",
3876                             reg_mask, i, reg_mask);
3877                 else if (semantic_idx == 1)
3878                     shader_addline(buffer, "gl_FrontSecondaryColor%s = OUT[%u]%s;\n",
3879                             reg_mask, i, reg_mask);
3880             }
3881             else if (shader_match_semantic(semantic_name, WINED3DDECLUSAGE_POSITION))
3882             {
3883                 shader_addline(buffer, "gl_Position%s = OUT[%u]%s;\n",
3884                         reg_mask, i, reg_mask);
3885             }
3886             else if (shader_match_semantic(semantic_name, WINED3DDECLUSAGE_TEXCOORD))
3887             {
3888                 if (semantic_idx < 8)
3889                 {
3890                     if (!(gl_info->quirks & WINED3D_QUIRK_SET_TEXCOORD_W) || ps_major > 0)
3891                         write_mask |= WINED3DSP_WRITEMASK_3;
3892
3893                     shader_addline(buffer, "gl_TexCoord[%u]%s = OUT[%u]%s;\n",
3894                             semantic_idx, reg_mask, i, reg_mask);
3895                     if (!(write_mask & WINED3DSP_WRITEMASK_3))
3896                         shader_addline(buffer, "gl_TexCoord[%u].w = 1.0;\n", semantic_idx);
3897                 }
3898             }
3899             else if (shader_match_semantic(semantic_name, WINED3DDECLUSAGE_PSIZE))
3900             {
3901                 shader_addline(buffer, "gl_PointSize = OUT[%u].%c;\n", i, reg_mask[1]);
3902             }
3903             else if (shader_match_semantic(semantic_name, WINED3DDECLUSAGE_FOG))
3904             {
3905                 shader_addline(buffer, "gl_FogFragCoord = OUT[%u].%c;\n", i, reg_mask[1]);
3906             }
3907         }
3908         shader_addline(buffer, "}\n");
3909
3910     }
3911     else
3912     {
3913         /* This one is tricky: a 3.0 pixel shader reads from a 3.0 vertex shader */
3914         shader_addline(buffer, "varying vec4 IN[%u];\n", vec4_varyings(3, gl_info));
3915         shader_addline(buffer, "void order_ps_input(in vec4 OUT[%u]) {\n", MAX_REG_OUTPUT);
3916
3917         /* First, sort out position and point size. Those are not passed to the pixel shader */
3918         for (i = 0; map; map >>= 1, ++i)
3919         {
3920             if (!(map & 1)) continue;
3921
3922             semantic_name = output_signature[i].semantic_name;
3923             shader_glsl_write_mask_to_str(output_signature[i].mask, reg_mask);
3924
3925             if (shader_match_semantic(semantic_name, WINED3DDECLUSAGE_POSITION))
3926             {
3927                 shader_addline(buffer, "gl_Position%s = OUT[%u]%s;\n",
3928                         reg_mask, i, reg_mask);
3929             }
3930             else if (shader_match_semantic(semantic_name, WINED3DDECLUSAGE_PSIZE))
3931             {
3932                 shader_addline(buffer, "gl_PointSize = OUT[%u].%c;\n", i, reg_mask[1]);
3933             }
3934         }
3935
3936         /* Then, fix the pixel shader input */
3937         handle_ps3_input(buffer, gl_info, ps->u.ps.input_reg_map, ps->input_signature,
3938                 &ps->reg_maps, output_signature, &vs->reg_maps);
3939
3940         shader_addline(buffer, "}\n");
3941     }
3942
3943     ret = GL_EXTCALL(glCreateShaderObjectARB(GL_VERTEX_SHADER_ARB));
3944     checkGLcall("glCreateShaderObjectARB(GL_VERTEX_SHADER_ARB)");
3945     shader_glsl_compile(gl_info, ret, buffer->buffer);
3946
3947     return ret;
3948 }
3949
3950 /* GL locking is done by the caller */
3951 static void hardcode_local_constants(const struct wined3d_shader *shader,
3952         const struct wined3d_gl_info *gl_info, GLhandleARB programId, char prefix)
3953 {
3954     const struct wined3d_shader_lconst *lconst;
3955     GLint tmp_loc;
3956     const float *value;
3957     char glsl_name[8];
3958
3959     LIST_FOR_EACH_ENTRY(lconst, &shader->constantsF, struct wined3d_shader_lconst, entry)
3960     {
3961         value = (const float *)lconst->value;
3962         snprintf(glsl_name, sizeof(glsl_name), "%cLC%u", prefix, lconst->idx);
3963         tmp_loc = GL_EXTCALL(glGetUniformLocationARB(programId, glsl_name));
3964         GL_EXTCALL(glUniform4fvARB(tmp_loc, 1, value));
3965     }
3966     checkGLcall("Hardcoding local constants");
3967 }
3968
3969 /* GL locking is done by the caller */
3970 static GLuint shader_glsl_generate_pshader(const struct wined3d_context *context,
3971         struct wined3d_shader_buffer *buffer, const struct wined3d_shader *shader,
3972         const struct ps_compile_args *args, struct ps_np2fixup_info *np2fixup_info)
3973 {
3974     const struct wined3d_shader_reg_maps *reg_maps = &shader->reg_maps;
3975     const struct wined3d_gl_info *gl_info = context->gl_info;
3976     const DWORD *function = shader->function;
3977     struct shader_glsl_ctx_priv priv_ctx;
3978
3979     /* Create the hw GLSL shader object and assign it as the shader->prgId */
3980     GLhandleARB shader_obj = GL_EXTCALL(glCreateShaderObjectARB(GL_FRAGMENT_SHADER_ARB));
3981
3982     memset(&priv_ctx, 0, sizeof(priv_ctx));
3983     priv_ctx.cur_ps_args = args;
3984     priv_ctx.cur_np2fixup_info = np2fixup_info;
3985
3986     shader_addline(buffer, "#version 120\n");
3987
3988     if (gl_info->supported[ARB_SHADER_TEXTURE_LOD])
3989     {
3990         shader_addline(buffer, "#extension GL_ARB_shader_texture_lod : enable\n");
3991     }
3992     if (gl_info->supported[ARB_TEXTURE_RECTANGLE])
3993     {
3994         /* The spec says that it doesn't have to be explicitly enabled, but the nvidia
3995          * drivers write a warning if we don't do so
3996          */
3997         shader_addline(buffer, "#extension GL_ARB_texture_rectangle : enable\n");
3998     }
3999     if (gl_info->supported[EXT_GPU_SHADER4])
4000     {
4001         shader_addline(buffer, "#extension GL_EXT_gpu_shader4 : enable\n");
4002     }
4003
4004     /* Base Declarations */
4005     shader_generate_glsl_declarations(context, buffer, shader, reg_maps, &priv_ctx);
4006
4007     /* Pack 3.0 inputs */
4008     if (reg_maps->shader_version.major >= 3 && args->vp_mode != vertexshader)
4009         shader_glsl_input_pack(shader, buffer, shader->input_signature, reg_maps, args->vp_mode);
4010
4011     /* Base Shader Body */
4012     shader_generate_main(shader, buffer, reg_maps, function, &priv_ctx);
4013
4014     /* Pixel shaders < 2.0 place the resulting color in R0 implicitly */
4015     if (reg_maps->shader_version.major < 2)
4016     {
4017         /* Some older cards like GeforceFX ones don't support multiple buffers, so also not gl_FragData */
4018         shader_addline(buffer, "gl_FragData[0] = R0;\n");
4019     }
4020
4021     if (args->srgb_correction)
4022     {
4023         shader_addline(buffer, "tmp0.xyz = pow(gl_FragData[0].xyz, vec3(srgb_const0.x));\n");
4024         shader_addline(buffer, "tmp0.xyz = tmp0.xyz * vec3(srgb_const0.y) - vec3(srgb_const0.z);\n");
4025         shader_addline(buffer, "tmp1.xyz = gl_FragData[0].xyz * vec3(srgb_const0.w);\n");
4026         shader_addline(buffer, "bvec3 srgb_compare = lessThan(gl_FragData[0].xyz, vec3(srgb_const1.x));\n");
4027         shader_addline(buffer, "gl_FragData[0].xyz = mix(tmp0.xyz, tmp1.xyz, vec3(srgb_compare));\n");
4028         shader_addline(buffer, "gl_FragData[0] = clamp(gl_FragData[0], 0.0, 1.0);\n");
4029     }
4030     /* Pixel shader < 3.0 do not replace the fog stage.
4031      * This implements linear fog computation and blending.
4032      * TODO: non linear fog
4033      * NOTE: gl_Fog.start and gl_Fog.end don't hold fog start s and end e but
4034      * -1/(e-s) and e/(e-s) respectively.
4035      */
4036     if (reg_maps->shader_version.major < 3)
4037     {
4038         switch(args->fog) {
4039             case FOG_OFF: break;
4040             case FOG_LINEAR:
4041                 shader_addline(buffer, "float fogstart = -1.0 / (gl_Fog.end - gl_Fog.start);\n");
4042                 shader_addline(buffer, "float fogend = gl_Fog.end * -fogstart;\n");
4043                 shader_addline(buffer, "float Fog = clamp(gl_FogFragCoord * fogstart + fogend, 0.0, 1.0);\n");
4044                 shader_addline(buffer, "gl_FragData[0].xyz = mix(gl_Fog.color.xyz, gl_FragData[0].xyz, Fog);\n");
4045                 break;
4046             case FOG_EXP:
4047                 /* Fog = e^(-gl_Fog.density * gl_FogFragCoord) */
4048                 shader_addline(buffer, "float Fog = exp(-gl_Fog.density * gl_FogFragCoord);\n");
4049                 shader_addline(buffer, "Fog = clamp(Fog, 0.0, 1.0);\n");
4050                 shader_addline(buffer, "gl_FragData[0].xyz = mix(gl_Fog.color.xyz, gl_FragData[0].xyz, Fog);\n");
4051                 break;
4052             case FOG_EXP2:
4053                 /* Fog = e^(-(gl_Fog.density * gl_FogFragCoord)^2) */
4054                 shader_addline(buffer, "float Fog = exp(-gl_Fog.density * gl_Fog.density * gl_FogFragCoord * gl_FogFragCoord);\n");
4055                 shader_addline(buffer, "Fog = clamp(Fog, 0.0, 1.0);\n");
4056                 shader_addline(buffer, "gl_FragData[0].xyz = mix(gl_Fog.color.xyz, gl_FragData[0].xyz, Fog);\n");
4057                 break;
4058         }
4059     }
4060
4061     shader_addline(buffer, "}\n");
4062
4063     TRACE("Compiling shader object %u\n", shader_obj);
4064     shader_glsl_compile(gl_info, shader_obj, buffer->buffer);
4065
4066     /* Store the shader object */
4067     return shader_obj;
4068 }
4069
4070 /* GL locking is done by the caller */
4071 static GLuint shader_glsl_generate_vshader(const struct wined3d_context *context,
4072         struct wined3d_shader_buffer *buffer, const struct wined3d_shader *shader,
4073         const struct vs_compile_args *args)
4074 {
4075     const struct wined3d_shader_reg_maps *reg_maps = &shader->reg_maps;
4076     const struct wined3d_gl_info *gl_info = context->gl_info;
4077     const DWORD *function = shader->function;
4078     struct shader_glsl_ctx_priv priv_ctx;
4079
4080     /* Create the hw GLSL shader program and assign it as the shader->prgId */
4081     GLhandleARB shader_obj = GL_EXTCALL(glCreateShaderObjectARB(GL_VERTEX_SHADER_ARB));
4082
4083     shader_addline(buffer, "#version 120\n");
4084
4085     if (gl_info->supported[EXT_GPU_SHADER4])
4086         shader_addline(buffer, "#extension GL_EXT_gpu_shader4 : enable\n");
4087
4088     memset(&priv_ctx, 0, sizeof(priv_ctx));
4089     priv_ctx.cur_vs_args = args;
4090
4091     /* Base Declarations */
4092     shader_generate_glsl_declarations(context, buffer, shader, reg_maps, &priv_ctx);
4093
4094     /* Base Shader Body */
4095     shader_generate_main(shader, buffer, reg_maps, function, &priv_ctx);
4096
4097     /* Unpack outputs */
4098     shader_addline(buffer, "order_ps_input(OUT);\n");
4099
4100     /* The D3DRS_FOGTABLEMODE render state defines if the shader-generated fog coord is used
4101      * or if the fragment depth is used. If the fragment depth is used(FOGTABLEMODE != NONE),
4102      * the fog frag coord is thrown away. If the fog frag coord is used, but not written by
4103      * the shader, it is set to 0.0(fully fogged, since start = 1.0, end = 0.0)
4104      */
4105     if (args->fog_src == VS_FOG_Z)
4106         shader_addline(buffer, "gl_FogFragCoord = gl_Position.z;\n");
4107     else if (!reg_maps->fog)
4108         shader_addline(buffer, "gl_FogFragCoord = 0.0;\n");
4109
4110     /* We always store the clipplanes without y inversion */
4111     if (args->clip_enabled)
4112         shader_addline(buffer, "gl_ClipVertex = gl_Position;\n");
4113
4114     /* Write the final position.
4115      *
4116      * OpenGL coordinates specify the center of the pixel while d3d coords specify
4117      * the corner. The offsets are stored in z and w in posFixup. posFixup.y contains
4118      * 1.0 or -1.0 to turn the rendering upside down for offscreen rendering. PosFixup.x
4119      * contains 1.0 to allow a mad.
4120      */
4121     shader_addline(buffer, "gl_Position.y = gl_Position.y * posFixup.y;\n");
4122     shader_addline(buffer, "gl_Position.xy += posFixup.zw * gl_Position.ww;\n");
4123
4124     /* Z coord [0;1]->[-1;1] mapping, see comment in transform_projection in state.c
4125      *
4126      * Basically we want (in homogeneous coordinates) z = z * 2 - 1. However, shaders are run
4127      * before the homogeneous divide, so we have to take the w into account: z = ((z / w) * 2 - 1) * w,
4128      * which is the same as z = z * 2 - w.
4129      */
4130     shader_addline(buffer, "gl_Position.z = gl_Position.z * 2.0 - gl_Position.w;\n");
4131
4132     shader_addline(buffer, "}\n");
4133
4134     TRACE("Compiling shader object %u\n", shader_obj);
4135     shader_glsl_compile(gl_info, shader_obj, buffer->buffer);
4136
4137     return shader_obj;
4138 }
4139
4140 static GLhandleARB find_glsl_pshader(const struct wined3d_context *context,
4141         struct wined3d_shader_buffer *buffer, struct wined3d_shader *shader,
4142         const struct ps_compile_args *args, const struct ps_np2fixup_info **np2fixup_info)
4143 {
4144     struct wined3d_state *state = &shader->device->stateBlock->state;
4145     UINT i;
4146     DWORD new_size;
4147     struct glsl_ps_compiled_shader *new_array;
4148     struct glsl_pshader_private    *shader_data;
4149     struct ps_np2fixup_info        *np2fixup = NULL;
4150     GLhandleARB ret;
4151
4152     if (!shader->backend_data)
4153     {
4154         shader->backend_data = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*shader_data));
4155         if (!shader->backend_data)
4156         {
4157             ERR("Failed to allocate backend data.\n");
4158             return 0;
4159         }
4160     }
4161     shader_data = shader->backend_data;
4162
4163     /* Usually we have very few GL shaders for each d3d shader(just 1 or maybe 2),
4164      * so a linear search is more performant than a hashmap or a binary search
4165      * (cache coherency etc)
4166      */
4167     for (i = 0; i < shader_data->num_gl_shaders; ++i)
4168     {
4169         if (!memcmp(&shader_data->gl_shaders[i].args, args, sizeof(*args)))
4170         {
4171             if (args->np2_fixup) *np2fixup_info = &shader_data->gl_shaders[i].np2fixup;
4172             return shader_data->gl_shaders[i].prgId;
4173         }
4174     }
4175
4176     TRACE("No matching GL shader found for shader %p, compiling a new shader.\n", shader);
4177     if(shader_data->shader_array_size == shader_data->num_gl_shaders) {
4178         if (shader_data->num_gl_shaders)
4179         {
4180             new_size = shader_data->shader_array_size + max(1, shader_data->shader_array_size / 2);
4181             new_array = HeapReAlloc(GetProcessHeap(), 0, shader_data->gl_shaders,
4182                                     new_size * sizeof(*shader_data->gl_shaders));
4183         } else {
4184             new_array = HeapAlloc(GetProcessHeap(), 0, sizeof(*shader_data->gl_shaders));
4185             new_size = 1;
4186         }
4187
4188         if(!new_array) {
4189             ERR("Out of memory\n");
4190             return 0;
4191         }
4192         shader_data->gl_shaders = new_array;
4193         shader_data->shader_array_size = new_size;
4194     }
4195
4196     shader_data->gl_shaders[shader_data->num_gl_shaders].args = *args;
4197
4198     memset(&shader_data->gl_shaders[shader_data->num_gl_shaders].np2fixup, 0, sizeof(struct ps_np2fixup_info));
4199     if (args->np2_fixup) np2fixup = &shader_data->gl_shaders[shader_data->num_gl_shaders].np2fixup;
4200
4201     pixelshader_update_samplers(&shader->reg_maps, state->textures);
4202
4203     shader_buffer_clear(buffer);
4204     ret = shader_glsl_generate_pshader(context, buffer, shader, args, np2fixup);
4205     shader_data->gl_shaders[shader_data->num_gl_shaders++].prgId = ret;
4206     *np2fixup_info = np2fixup;
4207
4208     return ret;
4209 }
4210
4211 static inline BOOL vs_args_equal(const struct vs_compile_args *stored, const struct vs_compile_args *new,
4212                                  const DWORD use_map) {
4213     if((stored->swizzle_map & use_map) != new->swizzle_map) return FALSE;
4214     if((stored->clip_enabled) != new->clip_enabled) return FALSE;
4215     return stored->fog_src == new->fog_src;
4216 }
4217
4218 static GLhandleARB find_glsl_vshader(const struct wined3d_context *context,
4219         struct wined3d_shader_buffer *buffer, struct wined3d_shader *shader,
4220         const struct vs_compile_args *args)
4221 {
4222     UINT i;
4223     DWORD new_size;
4224     struct glsl_vs_compiled_shader *new_array;
4225     DWORD use_map = shader->device->strided_streams.use_map;
4226     struct glsl_vshader_private *shader_data;
4227     GLhandleARB ret;
4228
4229     if (!shader->backend_data)
4230     {
4231         shader->backend_data = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*shader_data));
4232         if (!shader->backend_data)
4233         {
4234             ERR("Failed to allocate backend data.\n");
4235             return 0;
4236         }
4237     }
4238     shader_data = shader->backend_data;
4239
4240     /* Usually we have very few GL shaders for each d3d shader(just 1 or maybe 2),
4241      * so a linear search is more performant than a hashmap or a binary search
4242      * (cache coherency etc)
4243      */
4244     for(i = 0; i < shader_data->num_gl_shaders; i++) {
4245         if(vs_args_equal(&shader_data->gl_shaders[i].args, args, use_map)) {
4246             return shader_data->gl_shaders[i].prgId;
4247         }
4248     }
4249
4250     TRACE("No matching GL shader found for shader %p, compiling a new shader.\n", shader);
4251
4252     if(shader_data->shader_array_size == shader_data->num_gl_shaders) {
4253         if (shader_data->num_gl_shaders)
4254         {
4255             new_size = shader_data->shader_array_size + max(1, shader_data->shader_array_size / 2);
4256             new_array = HeapReAlloc(GetProcessHeap(), 0, shader_data->gl_shaders,
4257                                     new_size * sizeof(*shader_data->gl_shaders));
4258         } else {
4259             new_array = HeapAlloc(GetProcessHeap(), 0, sizeof(*shader_data->gl_shaders));
4260             new_size = 1;
4261         }
4262
4263         if(!new_array) {
4264             ERR("Out of memory\n");
4265             return 0;
4266         }
4267         shader_data->gl_shaders = new_array;
4268         shader_data->shader_array_size = new_size;
4269     }
4270
4271     shader_data->gl_shaders[shader_data->num_gl_shaders].args = *args;
4272
4273     shader_buffer_clear(buffer);
4274     ret = shader_glsl_generate_vshader(context, buffer, shader, args);
4275     shader_data->gl_shaders[shader_data->num_gl_shaders++].prgId = ret;
4276
4277     return ret;
4278 }
4279
4280 /** Sets the GLSL program ID for the given pixel and vertex shader combination.
4281  * It sets the programId on the current StateBlock (because it should be called
4282  * inside of the DrawPrimitive() part of the render loop).
4283  *
4284  * If a program for the given combination does not exist, create one, and store
4285  * the program in the hash table.  If it creates a program, it will link the
4286  * given objects, too.
4287  */
4288
4289 /* GL locking is done by the caller */
4290 static void set_glsl_shader_program(const struct wined3d_context *context,
4291         struct wined3d_device *device, BOOL use_ps, BOOL use_vs)
4292 {
4293     const struct wined3d_state *state = &device->stateBlock->state;
4294     struct wined3d_shader *vshader = use_vs ? state->vertex_shader : NULL;
4295     struct wined3d_shader *pshader = use_ps ? state->pixel_shader : NULL;
4296     const struct wined3d_gl_info *gl_info = context->gl_info;
4297     struct shader_glsl_priv *priv = device->shader_priv;
4298     struct glsl_shader_prog_link *entry    = NULL;
4299     GLhandleARB programId                  = 0;
4300     GLhandleARB reorder_shader_id          = 0;
4301     unsigned int i;
4302     char glsl_name[8];
4303     struct ps_compile_args ps_compile_args;
4304     struct vs_compile_args vs_compile_args;
4305
4306     if (vshader) find_vs_compile_args(state, vshader, &vs_compile_args);
4307     if (pshader) find_ps_compile_args(state, pshader, &ps_compile_args);
4308
4309     entry = get_glsl_program_entry(priv, vshader, pshader, &vs_compile_args, &ps_compile_args);
4310     if (entry)
4311     {
4312         priv->glsl_program = entry;
4313         return;
4314     }
4315
4316     /* If we get to this point, then no matching program exists, so we create one */
4317     programId = GL_EXTCALL(glCreateProgramObjectARB());
4318     TRACE("Created new GLSL shader program %u\n", programId);
4319
4320     /* Create the entry */
4321     entry = HeapAlloc(GetProcessHeap(), 0, sizeof(struct glsl_shader_prog_link));
4322     entry->programId = programId;
4323     entry->vshader = vshader;
4324     entry->pshader = pshader;
4325     entry->vs_args = vs_compile_args;
4326     entry->ps_args = ps_compile_args;
4327     entry->constant_version = 0;
4328     entry->np2Fixup_info = NULL;
4329     /* Add the hash table entry */
4330     add_glsl_program_entry(priv, entry);
4331
4332     /* Set the current program */
4333     priv->glsl_program = entry;
4334
4335     /* Attach GLSL vshader */
4336     if (vshader)
4337     {
4338         GLhandleARB vshader_id = find_glsl_vshader(context, &priv->shader_buffer, vshader, &vs_compile_args);
4339         WORD map = vshader->reg_maps.input_registers;
4340         char tmp_name[10];
4341
4342         reorder_shader_id = generate_param_reorder_function(&priv->shader_buffer, vshader, pshader, gl_info);
4343         TRACE("Attaching GLSL shader object %u to program %u\n", reorder_shader_id, programId);
4344         GL_EXTCALL(glAttachObjectARB(programId, reorder_shader_id));
4345         checkGLcall("glAttachObjectARB");
4346         /* Flag the reorder function for deletion, then it will be freed automatically when the program
4347          * is destroyed
4348          */
4349         GL_EXTCALL(glDeleteObjectARB(reorder_shader_id));
4350
4351         TRACE("Attaching GLSL shader object %u to program %u\n", vshader_id, programId);
4352         GL_EXTCALL(glAttachObjectARB(programId, vshader_id));
4353         checkGLcall("glAttachObjectARB");
4354
4355         /* Bind vertex attributes to a corresponding index number to match
4356          * the same index numbers as ARB_vertex_programs (makes loading
4357          * vertex attributes simpler).  With this method, we can use the
4358          * exact same code to load the attributes later for both ARB and
4359          * GLSL shaders.
4360          *
4361          * We have to do this here because we need to know the Program ID
4362          * in order to make the bindings work, and it has to be done prior
4363          * to linking the GLSL program. */
4364         for (i = 0; map; map >>= 1, ++i)
4365         {
4366             if (!(map & 1)) continue;
4367
4368             snprintf(tmp_name, sizeof(tmp_name), "attrib%u", i);
4369             GL_EXTCALL(glBindAttribLocationARB(programId, i, tmp_name));
4370         }
4371         checkGLcall("glBindAttribLocationARB");
4372
4373         list_add_head(&vshader->linked_programs, &entry->vshader_entry);
4374     }
4375
4376     /* Attach GLSL pshader */
4377     if (pshader)
4378     {
4379         GLhandleARB pshader_id = find_glsl_pshader(context, &priv->shader_buffer,
4380                 pshader, &ps_compile_args, &entry->np2Fixup_info);
4381         TRACE("Attaching GLSL shader object %u to program %u\n", pshader_id, programId);
4382         GL_EXTCALL(glAttachObjectARB(programId, pshader_id));
4383         checkGLcall("glAttachObjectARB");
4384
4385         list_add_head(&pshader->linked_programs, &entry->pshader_entry);
4386     }
4387
4388     /* Link the program */
4389     TRACE("Linking GLSL shader program %u\n", programId);
4390     GL_EXTCALL(glLinkProgramARB(programId));
4391     shader_glsl_validate_link(gl_info, programId);
4392
4393     entry->vuniformF_locations = HeapAlloc(GetProcessHeap(), 0,
4394             sizeof(GLhandleARB) * gl_info->limits.glsl_vs_float_constants);
4395     for (i = 0; i < gl_info->limits.glsl_vs_float_constants; ++i)
4396     {
4397         snprintf(glsl_name, sizeof(glsl_name), "VC[%i]", i);
4398         entry->vuniformF_locations[i] = GL_EXTCALL(glGetUniformLocationARB(programId, glsl_name));
4399     }
4400     for (i = 0; i < MAX_CONST_I; ++i)
4401     {
4402         snprintf(glsl_name, sizeof(glsl_name), "VI[%i]", i);
4403         entry->vuniformI_locations[i] = GL_EXTCALL(glGetUniformLocationARB(programId, glsl_name));
4404     }
4405     entry->puniformF_locations = HeapAlloc(GetProcessHeap(), 0,
4406             sizeof(GLhandleARB) * gl_info->limits.glsl_ps_float_constants);
4407     for (i = 0; i < gl_info->limits.glsl_ps_float_constants; ++i)
4408     {
4409         snprintf(glsl_name, sizeof(glsl_name), "PC[%i]", i);
4410         entry->puniformF_locations[i] = GL_EXTCALL(glGetUniformLocationARB(programId, glsl_name));
4411     }
4412     for (i = 0; i < MAX_CONST_I; ++i)
4413     {
4414         snprintf(glsl_name, sizeof(glsl_name), "PI[%i]", i);
4415         entry->puniformI_locations[i] = GL_EXTCALL(glGetUniformLocationARB(programId, glsl_name));
4416     }
4417
4418     if(pshader) {
4419         char name[32];
4420
4421         for(i = 0; i < MAX_TEXTURES; i++) {
4422             sprintf(name, "bumpenvmat%u", i);
4423             entry->bumpenvmat_location[i] = GL_EXTCALL(glGetUniformLocationARB(programId, name));
4424             sprintf(name, "luminancescale%u", i);
4425             entry->luminancescale_location[i] = GL_EXTCALL(glGetUniformLocationARB(programId, name));
4426             sprintf(name, "luminanceoffset%u", i);
4427             entry->luminanceoffset_location[i] = GL_EXTCALL(glGetUniformLocationARB(programId, name));
4428         }
4429
4430         if (ps_compile_args.np2_fixup) {
4431             if (entry->np2Fixup_info) {
4432                 entry->np2Fixup_location = GL_EXTCALL(glGetUniformLocationARB(programId, "PsamplerNP2Fixup"));
4433             } else {
4434                 FIXME("NP2 texcoord fixup needed for this pixelshader, but no fixup uniform found.\n");
4435             }
4436         }
4437     }
4438
4439     entry->posFixup_location = GL_EXTCALL(glGetUniformLocationARB(programId, "posFixup"));
4440     entry->ycorrection_location = GL_EXTCALL(glGetUniformLocationARB(programId, "ycorrection"));
4441     checkGLcall("Find glsl program uniform locations");
4442
4443     if (pshader && pshader->reg_maps.shader_version.major >= 3
4444             && pshader->u.ps.declared_in_count > vec4_varyings(3, gl_info))
4445     {
4446         TRACE("Shader %d needs vertex color clamping disabled\n", programId);
4447         entry->vertex_color_clamp = GL_FALSE;
4448     } else {
4449         entry->vertex_color_clamp = GL_FIXED_ONLY_ARB;
4450     }
4451
4452     /* Set the shader to allow uniform loading on it */
4453     GL_EXTCALL(glUseProgramObjectARB(programId));
4454     checkGLcall("glUseProgramObjectARB(programId)");
4455
4456     /* Load the vertex and pixel samplers now. The function that finds the mappings makes sure
4457      * that it stays the same for each vertexshader-pixelshader pair(=linked glsl program). If
4458      * a pshader with fixed function pipeline is used there are no vertex samplers, and if a
4459      * vertex shader with fixed function pixel processing is used we make sure that the card
4460      * supports enough samplers to allow the max number of vertex samplers with all possible
4461      * fixed function fragment processing setups. So once the program is linked these samplers
4462      * won't change.
4463      */
4464     if (vshader) shader_glsl_load_vsamplers(gl_info, device->texUnitMap, programId);
4465     if (pshader) shader_glsl_load_psamplers(gl_info, device->texUnitMap, programId);
4466
4467     /* If the local constants do not have to be loaded with the environment constants,
4468      * load them now to have them hardcoded in the GLSL program. This saves some CPU cycles
4469      * later
4470      */
4471     if (pshader && !pshader->load_local_constsF)
4472         hardcode_local_constants(pshader, gl_info, programId, 'P');
4473     if (vshader && !vshader->load_local_constsF)
4474         hardcode_local_constants(vshader, gl_info, programId, 'V');
4475 }
4476
4477 /* GL locking is done by the caller */
4478 static GLhandleARB create_glsl_blt_shader(const struct wined3d_gl_info *gl_info, enum tex_types tex_type, BOOL masked)
4479 {
4480     GLhandleARB program_id;
4481     GLhandleARB vshader_id, pshader_id;
4482     const char *blt_pshader;
4483
4484     static const char *blt_vshader =
4485         "#version 120\n"
4486         "void main(void)\n"
4487         "{\n"
4488         "    gl_Position = gl_Vertex;\n"
4489         "    gl_FrontColor = vec4(1.0);\n"
4490         "    gl_TexCoord[0] = gl_MultiTexCoord0;\n"
4491         "}\n";
4492
4493     static const char * const blt_pshaders_full[tex_type_count] =
4494     {
4495         /* tex_1d */
4496         NULL,
4497         /* tex_2d */
4498         "#version 120\n"
4499         "uniform sampler2D sampler;\n"
4500         "void main(void)\n"
4501         "{\n"
4502         "    gl_FragDepth = texture2D(sampler, gl_TexCoord[0].xy).x;\n"
4503         "}\n",
4504         /* tex_3d */
4505         NULL,
4506         /* tex_cube */
4507         "#version 120\n"
4508         "uniform samplerCube sampler;\n"
4509         "void main(void)\n"
4510         "{\n"
4511         "    gl_FragDepth = textureCube(sampler, gl_TexCoord[0].xyz).x;\n"
4512         "}\n",
4513         /* tex_rect */
4514         "#version 120\n"
4515         "#extension GL_ARB_texture_rectangle : enable\n"
4516         "uniform sampler2DRect sampler;\n"
4517         "void main(void)\n"
4518         "{\n"
4519         "    gl_FragDepth = texture2DRect(sampler, gl_TexCoord[0].xy).x;\n"
4520         "}\n",
4521     };
4522
4523     static const char * const blt_pshaders_masked[tex_type_count] =
4524     {
4525         /* tex_1d */
4526         NULL,
4527         /* tex_2d */
4528         "#version 120\n"
4529         "uniform sampler2D sampler;\n"
4530         "uniform vec4 mask;\n"
4531         "void main(void)\n"
4532         "{\n"
4533         "    if (all(lessThan(gl_FragCoord.xy, mask.zw))) discard;\n"
4534         "    gl_FragDepth = texture2D(sampler, gl_TexCoord[0].xy).x;\n"
4535         "}\n",
4536         /* tex_3d */
4537         NULL,
4538         /* tex_cube */
4539         "#version 120\n"
4540         "uniform samplerCube sampler;\n"
4541         "uniform vec4 mask;\n"
4542         "void main(void)\n"
4543         "{\n"
4544         "    if (all(lessThan(gl_FragCoord.xy, mask.zw))) discard;\n"
4545         "    gl_FragDepth = textureCube(sampler, gl_TexCoord[0].xyz).x;\n"
4546         "}\n",
4547         /* tex_rect */
4548         "#version 120\n"
4549         "#extension GL_ARB_texture_rectangle : enable\n"
4550         "uniform sampler2DRect sampler;\n"
4551         "uniform vec4 mask;\n"
4552         "void main(void)\n"
4553         "{\n"
4554         "    if (all(lessThan(gl_FragCoord.xy, mask.zw))) discard;\n"
4555         "    gl_FragDepth = texture2DRect(sampler, gl_TexCoord[0].xy).x;\n"
4556         "}\n",
4557     };
4558
4559     blt_pshader = masked ? blt_pshaders_masked[tex_type] : blt_pshaders_full[tex_type];
4560     if (!blt_pshader)
4561     {
4562         FIXME("tex_type %#x not supported\n", tex_type);
4563         return 0;
4564     }
4565
4566     vshader_id = GL_EXTCALL(glCreateShaderObjectARB(GL_VERTEX_SHADER_ARB));
4567     shader_glsl_compile(gl_info, vshader_id, blt_vshader);
4568
4569     pshader_id = GL_EXTCALL(glCreateShaderObjectARB(GL_FRAGMENT_SHADER_ARB));
4570     shader_glsl_compile(gl_info, pshader_id, blt_pshader);
4571
4572     program_id = GL_EXTCALL(glCreateProgramObjectARB());
4573     GL_EXTCALL(glAttachObjectARB(program_id, vshader_id));
4574     GL_EXTCALL(glAttachObjectARB(program_id, pshader_id));
4575     GL_EXTCALL(glLinkProgramARB(program_id));
4576
4577     shader_glsl_validate_link(gl_info, program_id);
4578
4579     /* Once linked we can mark the shaders for deletion. They will be deleted once the program
4580      * is destroyed
4581      */
4582     GL_EXTCALL(glDeleteObjectARB(vshader_id));
4583     GL_EXTCALL(glDeleteObjectARB(pshader_id));
4584     return program_id;
4585 }
4586
4587 /* GL locking is done by the caller */
4588 static void shader_glsl_select(const struct wined3d_context *context, BOOL usePS, BOOL useVS)
4589 {
4590     const struct wined3d_gl_info *gl_info = context->gl_info;
4591     struct wined3d_device *device = context->swapchain->device;
4592     struct shader_glsl_priv *priv = device->shader_priv;
4593     GLhandleARB program_id = 0;
4594     GLenum old_vertex_color_clamp, current_vertex_color_clamp;
4595
4596     old_vertex_color_clamp = priv->glsl_program ? priv->glsl_program->vertex_color_clamp : GL_FIXED_ONLY_ARB;
4597
4598     if (useVS || usePS) set_glsl_shader_program(context, device, usePS, useVS);
4599     else priv->glsl_program = NULL;
4600
4601     current_vertex_color_clamp = priv->glsl_program ? priv->glsl_program->vertex_color_clamp : GL_FIXED_ONLY_ARB;
4602
4603     if (old_vertex_color_clamp != current_vertex_color_clamp)
4604     {
4605         if (gl_info->supported[ARB_COLOR_BUFFER_FLOAT])
4606         {
4607             GL_EXTCALL(glClampColorARB(GL_CLAMP_VERTEX_COLOR_ARB, current_vertex_color_clamp));
4608             checkGLcall("glClampColorARB");
4609         }
4610         else
4611         {
4612             FIXME("vertex color clamp needs to be changed, but extension not supported.\n");
4613         }
4614     }
4615
4616     program_id = priv->glsl_program ? priv->glsl_program->programId : 0;
4617     if (program_id) TRACE("Using GLSL program %u\n", program_id);
4618     GL_EXTCALL(glUseProgramObjectARB(program_id));
4619     checkGLcall("glUseProgramObjectARB");
4620
4621     /* In case that NP2 texcoord fixup data is found for the selected program, trigger a reload of the
4622      * constants. This has to be done because it can't be guaranteed that sampler() (from state.c) is
4623      * called between selecting the shader and using it, which results in wrong fixup for some frames. */
4624     if (priv->glsl_program && priv->glsl_program->np2Fixup_info)
4625     {
4626         shader_glsl_load_np2fixup_constants(priv, gl_info, &device->stateBlock->state);
4627     }
4628 }
4629
4630 /* GL locking is done by the caller */
4631 static void shader_glsl_select_depth_blt(void *shader_priv, const struct wined3d_gl_info *gl_info,
4632         enum tex_types tex_type, const SIZE *ds_mask_size)
4633 {
4634     BOOL masked = ds_mask_size->cx && ds_mask_size->cy;
4635     struct shader_glsl_priv *priv = shader_priv;
4636     GLhandleARB *blt_program;
4637     GLint loc;
4638
4639     blt_program = masked ? &priv->depth_blt_program_masked[tex_type] : &priv->depth_blt_program_full[tex_type];
4640     if (!*blt_program)
4641     {
4642         *blt_program = create_glsl_blt_shader(gl_info, tex_type, masked);
4643         loc = GL_EXTCALL(glGetUniformLocationARB(*blt_program, "sampler"));
4644         GL_EXTCALL(glUseProgramObjectARB(*blt_program));
4645         GL_EXTCALL(glUniform1iARB(loc, 0));
4646     }
4647     else
4648     {
4649         GL_EXTCALL(glUseProgramObjectARB(*blt_program));
4650     }
4651
4652     if (masked)
4653     {
4654         loc = GL_EXTCALL(glGetUniformLocationARB(*blt_program, "mask"));
4655         GL_EXTCALL(glUniform4fARB(loc, 0.0f, 0.0f, (float)ds_mask_size->cx, (float)ds_mask_size->cy));
4656     }
4657 }
4658
4659 /* GL locking is done by the caller */
4660 static void shader_glsl_deselect_depth_blt(void *shader_priv, const struct wined3d_gl_info *gl_info)
4661 {
4662     struct shader_glsl_priv *priv = shader_priv;
4663     GLhandleARB program_id;
4664
4665     program_id = priv->glsl_program ? priv->glsl_program->programId : 0;
4666     if (program_id) TRACE("Using GLSL program %u\n", program_id);
4667
4668     GL_EXTCALL(glUseProgramObjectARB(program_id));
4669     checkGLcall("glUseProgramObjectARB");
4670 }
4671
4672 static void shader_glsl_destroy(struct wined3d_shader *shader)
4673 {
4674     struct wined3d_device *device = shader->device;
4675     struct shader_glsl_priv *priv = device->shader_priv;
4676     const struct wined3d_gl_info *gl_info;
4677     const struct list *linked_programs;
4678     struct wined3d_context *context;
4679
4680     char pshader = shader_is_pshader_version(shader->reg_maps.shader_version.type);
4681
4682     if (pshader)
4683     {
4684         struct glsl_pshader_private *shader_data = shader->backend_data;
4685
4686         if (!shader_data || !shader_data->num_gl_shaders)
4687         {
4688             HeapFree(GetProcessHeap(), 0, shader_data);
4689             shader->backend_data = NULL;
4690             return;
4691         }
4692
4693         context = context_acquire(device, NULL);
4694         gl_info = context->gl_info;
4695
4696         if (priv->glsl_program && priv->glsl_program->pshader == shader)
4697         {
4698             ENTER_GL();
4699             shader_glsl_select(context, FALSE, FALSE);
4700             LEAVE_GL();
4701         }
4702     }
4703     else
4704     {
4705         struct glsl_vshader_private *shader_data = shader->backend_data;
4706
4707         if (!shader_data || !shader_data->num_gl_shaders)
4708         {
4709             HeapFree(GetProcessHeap(), 0, shader_data);
4710             shader->backend_data = NULL;
4711             return;
4712         }
4713
4714         context = context_acquire(device, NULL);
4715         gl_info = context->gl_info;
4716
4717         if (priv->glsl_program && priv->glsl_program->vshader == shader)
4718         {
4719             ENTER_GL();
4720             shader_glsl_select(context, FALSE, FALSE);
4721             LEAVE_GL();
4722         }
4723     }
4724
4725     linked_programs = &shader->linked_programs;
4726
4727     TRACE("Deleting linked programs\n");
4728     if (linked_programs->next) {
4729         struct glsl_shader_prog_link *entry, *entry2;
4730
4731         ENTER_GL();
4732         if(pshader) {
4733             LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, linked_programs, struct glsl_shader_prog_link, pshader_entry) {
4734                 delete_glsl_program_entry(priv, gl_info, entry);
4735             }
4736         } else {
4737             LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, linked_programs, struct glsl_shader_prog_link, vshader_entry) {
4738                 delete_glsl_program_entry(priv, gl_info, entry);
4739             }
4740         }
4741         LEAVE_GL();
4742     }
4743
4744     if (pshader)
4745     {
4746         struct glsl_pshader_private *shader_data = shader->backend_data;
4747         UINT i;
4748
4749         ENTER_GL();
4750         for(i = 0; i < shader_data->num_gl_shaders; i++) {
4751             TRACE("deleting pshader %u\n", shader_data->gl_shaders[i].prgId);
4752             GL_EXTCALL(glDeleteObjectARB(shader_data->gl_shaders[i].prgId));
4753             checkGLcall("glDeleteObjectARB");
4754         }
4755         LEAVE_GL();
4756         HeapFree(GetProcessHeap(), 0, shader_data->gl_shaders);
4757     }
4758     else
4759     {
4760         struct glsl_vshader_private *shader_data = shader->backend_data;
4761         UINT i;
4762
4763         ENTER_GL();
4764         for(i = 0; i < shader_data->num_gl_shaders; i++) {
4765             TRACE("deleting vshader %u\n", shader_data->gl_shaders[i].prgId);
4766             GL_EXTCALL(glDeleteObjectARB(shader_data->gl_shaders[i].prgId));
4767             checkGLcall("glDeleteObjectARB");
4768         }
4769         LEAVE_GL();
4770         HeapFree(GetProcessHeap(), 0, shader_data->gl_shaders);
4771     }
4772
4773     HeapFree(GetProcessHeap(), 0, shader->backend_data);
4774     shader->backend_data = NULL;
4775
4776     context_release(context);
4777 }
4778
4779 static int glsl_program_key_compare(const void *key, const struct wine_rb_entry *entry)
4780 {
4781     const struct glsl_program_key *k = key;
4782     const struct glsl_shader_prog_link *prog = WINE_RB_ENTRY_VALUE(entry,
4783             const struct glsl_shader_prog_link, program_lookup_entry);
4784     int cmp;
4785
4786     if (k->vshader > prog->vshader) return 1;
4787     else if (k->vshader < prog->vshader) return -1;
4788
4789     if (k->pshader > prog->pshader) return 1;
4790     else if (k->pshader < prog->pshader) return -1;
4791
4792     if (k->vshader && (cmp = memcmp(&k->vs_args, &prog->vs_args, sizeof(prog->vs_args)))) return cmp;
4793     if (k->pshader && (cmp = memcmp(&k->ps_args, &prog->ps_args, sizeof(prog->ps_args)))) return cmp;
4794
4795     return 0;
4796 }
4797
4798 static BOOL constant_heap_init(struct constant_heap *heap, unsigned int constant_count)
4799 {
4800     SIZE_T size = (constant_count + 1) * sizeof(*heap->entries) + constant_count * sizeof(*heap->positions);
4801     void *mem = HeapAlloc(GetProcessHeap(), 0, size);
4802
4803     if (!mem)
4804     {
4805         ERR("Failed to allocate memory\n");
4806         return FALSE;
4807     }
4808
4809     heap->entries = mem;
4810     heap->entries[1].version = 0;
4811     heap->positions = (unsigned int *)(heap->entries + constant_count + 1);
4812     heap->size = 1;
4813
4814     return TRUE;
4815 }
4816
4817 static void constant_heap_free(struct constant_heap *heap)
4818 {
4819     HeapFree(GetProcessHeap(), 0, heap->entries);
4820 }
4821
4822 static const struct wine_rb_functions wined3d_glsl_program_rb_functions =
4823 {
4824     wined3d_rb_alloc,
4825     wined3d_rb_realloc,
4826     wined3d_rb_free,
4827     glsl_program_key_compare,
4828 };
4829
4830 static HRESULT shader_glsl_alloc(struct wined3d_device *device)
4831 {
4832     const struct wined3d_gl_info *gl_info = &device->adapter->gl_info;
4833     struct shader_glsl_priv *priv = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(struct shader_glsl_priv));
4834     SIZE_T stack_size = wined3d_log2i(max(gl_info->limits.glsl_vs_float_constants,
4835             gl_info->limits.glsl_ps_float_constants)) + 1;
4836
4837     if (!shader_buffer_init(&priv->shader_buffer))
4838     {
4839         ERR("Failed to initialize shader buffer.\n");
4840         goto fail;
4841     }
4842
4843     priv->stack = HeapAlloc(GetProcessHeap(), 0, stack_size * sizeof(*priv->stack));
4844     if (!priv->stack)
4845     {
4846         ERR("Failed to allocate memory.\n");
4847         goto fail;
4848     }
4849
4850     if (!constant_heap_init(&priv->vconst_heap, gl_info->limits.glsl_vs_float_constants))
4851     {
4852         ERR("Failed to initialize vertex shader constant heap\n");
4853         goto fail;
4854     }
4855
4856     if (!constant_heap_init(&priv->pconst_heap, gl_info->limits.glsl_ps_float_constants))
4857     {
4858         ERR("Failed to initialize pixel shader constant heap\n");
4859         goto fail;
4860     }
4861
4862     if (wine_rb_init(&priv->program_lookup, &wined3d_glsl_program_rb_functions) == -1)
4863     {
4864         ERR("Failed to initialize rbtree.\n");
4865         goto fail;
4866     }
4867
4868     priv->next_constant_version = 1;
4869
4870     device->shader_priv = priv;
4871     return WINED3D_OK;
4872
4873 fail:
4874     constant_heap_free(&priv->pconst_heap);
4875     constant_heap_free(&priv->vconst_heap);
4876     HeapFree(GetProcessHeap(), 0, priv->stack);
4877     shader_buffer_free(&priv->shader_buffer);
4878     HeapFree(GetProcessHeap(), 0, priv);
4879     return E_OUTOFMEMORY;
4880 }
4881
4882 /* Context activation is done by the caller. */
4883 static void shader_glsl_free(struct wined3d_device *device)
4884 {
4885     const struct wined3d_gl_info *gl_info = &device->adapter->gl_info;
4886     struct shader_glsl_priv *priv = device->shader_priv;
4887     int i;
4888
4889     ENTER_GL();
4890     for (i = 0; i < tex_type_count; ++i)
4891     {
4892         if (priv->depth_blt_program_full[i])
4893         {
4894             GL_EXTCALL(glDeleteObjectARB(priv->depth_blt_program_full[i]));
4895         }
4896         if (priv->depth_blt_program_masked[i])
4897         {
4898             GL_EXTCALL(glDeleteObjectARB(priv->depth_blt_program_masked[i]));
4899         }
4900     }
4901     LEAVE_GL();
4902
4903     wine_rb_destroy(&priv->program_lookup, NULL, NULL);
4904     constant_heap_free(&priv->pconst_heap);
4905     constant_heap_free(&priv->vconst_heap);
4906     HeapFree(GetProcessHeap(), 0, priv->stack);
4907     shader_buffer_free(&priv->shader_buffer);
4908
4909     HeapFree(GetProcessHeap(), 0, device->shader_priv);
4910     device->shader_priv = NULL;
4911 }
4912
4913 static void shader_glsl_context_destroyed(void *shader_priv, const struct wined3d_context *context) {}
4914
4915 static void shader_glsl_get_caps(const struct wined3d_gl_info *gl_info, struct shader_caps *caps)
4916 {
4917     if (gl_info->supported[EXT_GPU_SHADER4] && gl_info->supported[ARB_GEOMETRY_SHADER4]
4918             && gl_info->glsl_version >= MAKEDWORD_VERSION(1, 50))
4919     {
4920         caps->VertexShaderVersion = 4;
4921         caps->PixelShaderVersion = 4;
4922     }
4923     /* ARB_shader_texture_lod or EXT_gpu_shader4 is required for the SM3
4924      * texldd and texldl instructions. */
4925     else if (gl_info->supported[ARB_SHADER_TEXTURE_LOD] || gl_info->supported[EXT_GPU_SHADER4])
4926     {
4927         caps->VertexShaderVersion = 3;
4928         caps->PixelShaderVersion = 3;
4929     }
4930     else
4931     {
4932         caps->VertexShaderVersion = 2;
4933         caps->PixelShaderVersion = 2;
4934     }
4935
4936     caps->MaxVertexShaderConst = gl_info->limits.glsl_vs_float_constants;
4937     caps->MaxPixelShaderConst = gl_info->limits.glsl_ps_float_constants;
4938
4939     /* FIXME: The following line is card dependent. -8.0 to 8.0 is the
4940      * Direct3D minimum requirement.
4941      *
4942      * Both GL_ARB_fragment_program and GLSL require a "maximum representable magnitude"
4943      * of colors to be 2^10, and 2^32 for other floats. Should we use 1024 here?
4944      *
4945      * The problem is that the refrast clamps temporary results in the shader to
4946      * [-MaxValue;+MaxValue]. If the card's max value is bigger than the one we advertize here,
4947      * then applications may miss the clamping behavior. On the other hand, if it is smaller,
4948      * the shader will generate incorrect results too. Unfortunately, GL deliberately doesn't
4949      * offer a way to query this.
4950      */
4951     caps->PixelShader1xMaxValue = 8.0;
4952
4953     caps->VSClipping = TRUE;
4954
4955     TRACE_(d3d_caps)("Hardware vertex shader version %u enabled (GLSL).\n",
4956             caps->VertexShaderVersion);
4957     TRACE_(d3d_caps)("Hardware pixel shader version %u enabled (GLSL).\n",
4958             caps->PixelShaderVersion);
4959 }
4960
4961 static BOOL shader_glsl_color_fixup_supported(struct color_fixup_desc fixup)
4962 {
4963     if (TRACE_ON(d3d_shader) && TRACE_ON(d3d))
4964     {
4965         TRACE("Checking support for fixup:\n");
4966         dump_color_fixup_desc(fixup);
4967     }
4968
4969     /* We support everything except YUV conversions. */
4970     if (!is_complex_fixup(fixup))
4971     {
4972         TRACE("[OK]\n");
4973         return TRUE;
4974     }
4975
4976     TRACE("[FAILED]\n");
4977     return FALSE;
4978 }
4979
4980 static const SHADER_HANDLER shader_glsl_instruction_handler_table[WINED3DSIH_TABLE_SIZE] =
4981 {
4982     /* WINED3DSIH_ABS           */ shader_glsl_map2gl,
4983     /* WINED3DSIH_ADD           */ shader_glsl_arith,
4984     /* WINED3DSIH_AND           */ NULL,
4985     /* WINED3DSIH_BEM           */ shader_glsl_bem,
4986     /* WINED3DSIH_BREAK         */ shader_glsl_break,
4987     /* WINED3DSIH_BREAKC        */ shader_glsl_breakc,
4988     /* WINED3DSIH_BREAKP        */ NULL,
4989     /* WINED3DSIH_CALL          */ shader_glsl_call,
4990     /* WINED3DSIH_CALLNZ        */ shader_glsl_callnz,
4991     /* WINED3DSIH_CMP           */ shader_glsl_cmp,
4992     /* WINED3DSIH_CND           */ shader_glsl_cnd,
4993     /* WINED3DSIH_CRS           */ shader_glsl_cross,
4994     /* WINED3DSIH_CUT           */ NULL,
4995     /* WINED3DSIH_DCL           */ NULL,
4996     /* WINED3DSIH_DEF           */ NULL,
4997     /* WINED3DSIH_DEFB          */ NULL,
4998     /* WINED3DSIH_DEFI          */ NULL,
4999     /* WINED3DSIH_DIV           */ NULL,
5000     /* WINED3DSIH_DP2ADD        */ shader_glsl_dp2add,
5001     /* WINED3DSIH_DP3           */ shader_glsl_dot,
5002     /* WINED3DSIH_DP4           */ shader_glsl_dot,
5003     /* WINED3DSIH_DST           */ shader_glsl_dst,
5004     /* WINED3DSIH_DSX           */ shader_glsl_map2gl,
5005     /* WINED3DSIH_DSY           */ shader_glsl_map2gl,
5006     /* WINED3DSIH_ELSE          */ shader_glsl_else,
5007     /* WINED3DSIH_EMIT          */ NULL,
5008     /* WINED3DSIH_ENDIF         */ shader_glsl_end,
5009     /* WINED3DSIH_ENDLOOP       */ shader_glsl_end,
5010     /* WINED3DSIH_ENDREP        */ shader_glsl_end,
5011     /* WINED3DSIH_EQ            */ NULL,
5012     /* WINED3DSIH_EXP           */ shader_glsl_map2gl,
5013     /* WINED3DSIH_EXPP          */ shader_glsl_expp,
5014     /* WINED3DSIH_FRC           */ shader_glsl_map2gl,
5015     /* WINED3DSIH_FTOI          */ NULL,
5016     /* WINED3DSIH_GE            */ NULL,
5017     /* WINED3DSIH_IADD          */ NULL,
5018     /* WINED3DSIH_IEQ           */ NULL,
5019     /* WINED3DSIH_IF            */ shader_glsl_if,
5020     /* WINED3DSIH_IFC           */ shader_glsl_ifc,
5021     /* WINED3DSIH_IGE           */ NULL,
5022     /* WINED3DSIH_IMUL          */ NULL,
5023     /* WINED3DSIH_ITOF          */ NULL,
5024     /* WINED3DSIH_LABEL         */ shader_glsl_label,
5025     /* WINED3DSIH_LD            */ NULL,
5026     /* WINED3DSIH_LIT           */ shader_glsl_lit,
5027     /* WINED3DSIH_LOG           */ shader_glsl_log,
5028     /* WINED3DSIH_LOGP          */ shader_glsl_log,
5029     /* WINED3DSIH_LOOP          */ shader_glsl_loop,
5030     /* WINED3DSIH_LRP           */ shader_glsl_lrp,
5031     /* WINED3DSIH_LT            */ NULL,
5032     /* WINED3DSIH_M3x2          */ shader_glsl_mnxn,
5033     /* WINED3DSIH_M3x3          */ shader_glsl_mnxn,
5034     /* WINED3DSIH_M3x4          */ shader_glsl_mnxn,
5035     /* WINED3DSIH_M4x3          */ shader_glsl_mnxn,
5036     /* WINED3DSIH_M4x4          */ shader_glsl_mnxn,
5037     /* WINED3DSIH_MAD           */ shader_glsl_mad,
5038     /* WINED3DSIH_MAX           */ shader_glsl_map2gl,
5039     /* WINED3DSIH_MIN           */ shader_glsl_map2gl,
5040     /* WINED3DSIH_MOV           */ shader_glsl_mov,
5041     /* WINED3DSIH_MOVA          */ shader_glsl_mov,
5042     /* WINED3DSIH_MOVC          */ NULL,
5043     /* WINED3DSIH_MUL           */ shader_glsl_arith,
5044     /* WINED3DSIH_NOP           */ NULL,
5045     /* WINED3DSIH_NRM           */ shader_glsl_nrm,
5046     /* WINED3DSIH_PHASE         */ NULL,
5047     /* WINED3DSIH_POW           */ shader_glsl_pow,
5048     /* WINED3DSIH_RCP           */ shader_glsl_rcp,
5049     /* WINED3DSIH_REP           */ shader_glsl_rep,
5050     /* WINED3DSIH_RET           */ shader_glsl_ret,
5051     /* WINED3DSIH_ROUND_NI      */ NULL,
5052     /* WINED3DSIH_RSQ           */ shader_glsl_rsq,
5053     /* WINED3DSIH_SAMPLE        */ NULL,
5054     /* WINED3DSIH_SAMPLE_GRAD   */ NULL,
5055     /* WINED3DSIH_SAMPLE_LOD    */ NULL,
5056     /* WINED3DSIH_SETP          */ NULL,
5057     /* WINED3DSIH_SGE           */ shader_glsl_compare,
5058     /* WINED3DSIH_SGN           */ shader_glsl_sgn,
5059     /* WINED3DSIH_SINCOS        */ shader_glsl_sincos,
5060     /* WINED3DSIH_SLT           */ shader_glsl_compare,
5061     /* WINED3DSIH_SQRT          */ NULL,
5062     /* WINED3DSIH_SUB           */ shader_glsl_arith,
5063     /* WINED3DSIH_TEX           */ shader_glsl_tex,
5064     /* WINED3DSIH_TEXBEM        */ shader_glsl_texbem,
5065     /* WINED3DSIH_TEXBEML       */ shader_glsl_texbem,
5066     /* WINED3DSIH_TEXCOORD      */ shader_glsl_texcoord,
5067     /* WINED3DSIH_TEXDEPTH      */ shader_glsl_texdepth,
5068     /* WINED3DSIH_TEXDP3        */ shader_glsl_texdp3,
5069     /* WINED3DSIH_TEXDP3TEX     */ shader_glsl_texdp3tex,
5070     /* WINED3DSIH_TEXKILL       */ shader_glsl_texkill,
5071     /* WINED3DSIH_TEXLDD        */ shader_glsl_texldd,
5072     /* WINED3DSIH_TEXLDL        */ shader_glsl_texldl,
5073     /* WINED3DSIH_TEXM3x2DEPTH  */ shader_glsl_texm3x2depth,
5074     /* WINED3DSIH_TEXM3x2PAD    */ shader_glsl_texm3x2pad,
5075     /* WINED3DSIH_TEXM3x2TEX    */ shader_glsl_texm3x2tex,
5076     /* WINED3DSIH_TEXM3x3       */ shader_glsl_texm3x3,
5077     /* WINED3DSIH_TEXM3x3DIFF   */ NULL,
5078     /* WINED3DSIH_TEXM3x3PAD    */ shader_glsl_texm3x3pad,
5079     /* WINED3DSIH_TEXM3x3SPEC   */ shader_glsl_texm3x3spec,
5080     /* WINED3DSIH_TEXM3x3TEX    */ shader_glsl_texm3x3tex,
5081     /* WINED3DSIH_TEXM3x3VSPEC  */ shader_glsl_texm3x3vspec,
5082     /* WINED3DSIH_TEXREG2AR     */ shader_glsl_texreg2ar,
5083     /* WINED3DSIH_TEXREG2GB     */ shader_glsl_texreg2gb,
5084     /* WINED3DSIH_TEXREG2RGB    */ shader_glsl_texreg2rgb,
5085     /* WINED3DSIH_UTOF          */ NULL,
5086 };
5087
5088 static void shader_glsl_handle_instruction(const struct wined3d_shader_instruction *ins) {
5089     SHADER_HANDLER hw_fct;
5090
5091     /* Select handler */
5092     hw_fct = shader_glsl_instruction_handler_table[ins->handler_idx];
5093
5094     /* Unhandled opcode */
5095     if (!hw_fct)
5096     {
5097         FIXME("Backend can't handle opcode %#x\n", ins->handler_idx);
5098         return;
5099     }
5100     hw_fct(ins);
5101
5102     shader_glsl_add_instruction_modifiers(ins);
5103 }
5104
5105 const struct wined3d_shader_backend_ops glsl_shader_backend =
5106 {
5107     shader_glsl_handle_instruction,
5108     shader_glsl_select,
5109     shader_glsl_select_depth_blt,
5110     shader_glsl_deselect_depth_blt,
5111     shader_glsl_update_float_vertex_constants,
5112     shader_glsl_update_float_pixel_constants,
5113     shader_glsl_load_constants,
5114     shader_glsl_load_np2fixup_constants,
5115     shader_glsl_destroy,
5116     shader_glsl_alloc,
5117     shader_glsl_free,
5118     shader_glsl_context_destroyed,
5119     shader_glsl_get_caps,
5120     shader_glsl_color_fixup_supported,
5121 };