git.oblomov.eu Git - wine/blob - dlls/wined3d/drawprim.c

   1 /*
   2  * WINED3D draw functions
   3  *
   4  * Copyright 2002-2004 Jason Edmeades
   5  * Copyright 2002-2004 Raphael Junqueira
   6  * Copyright 2004 Christian Costa
   7  * Copyright 2005 Oliver Stieber
   8  * Copyright 2006, 2008 Henri Verbeet
   9  * Copyright 2007-2008 Stefan Dösinger for CodeWeavers
  10  * Copyright 2009 Henri Verbeet for CodeWeavers
  11  *
  12  * This library is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU Lesser General Public
  14  * License as published by the Free Software Foundation; either
  15  * version 2.1 of the License, or (at your option) any later version.
  16  *
  17  * This library is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20  * Lesser General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU Lesser General Public
  23  * License along with this library; if not, write to the Free Software
  24  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  25  */
  26
  27 #include "config.h"
  28 #include "wine/port.h"
  29
  30 #include "wined3d_private.h"
  31
  32 WINE_DEFAULT_DEBUG_CHANNEL(d3d_draw);
  33
  34 #include <stdio.h>
  35 #include <math.h>
  36
  37 /* Context activation is done by the caller. */
  38 static void drawStridedFast(const struct wined3d_gl_info *gl_info, GLenum primitive_type, UINT count, UINT idx_size,
  39         const void *idx_data, UINT start_idx, INT base_vertex_index, UINT start_instance, UINT instance_count)
  40 {
  41     if (idx_size)
  42     {
  43         GLenum idxtype = idx_size == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT;
  44         if (instance_count)
  45         {
  46             if (!gl_info->supported[ARB_DRAW_INSTANCED])
  47             {
  48                 FIXME("Instanced drawing not supported.\n");
  49             }
  50             else
  51             {
  52                 if (start_instance)
  53                     FIXME("Start instance (%u) not supported.\n", start_instance);
  54                 GL_EXTCALL(glDrawElementsInstancedBaseVertex(primitive_type, count, idxtype,
  55                         (const char *)idx_data + (idx_size * start_idx), instance_count, base_vertex_index));
  56                 checkGLcall("glDrawElementsInstancedBaseVertex");
  57             }
  58         }
  59         else if (gl_info->supported[ARB_DRAW_ELEMENTS_BASE_VERTEX])
  60         {
  61             GL_EXTCALL(glDrawElementsBaseVertex(primitive_type, count, idxtype,
  62                     (const char *)idx_data + (idx_size * start_idx), base_vertex_index));
  63             checkGLcall("glDrawElementsBaseVertex");
  64         }
  65         else
  66         {
  67             gl_info->gl_ops.gl.p_glDrawElements(primitive_type, count,
  68                     idxtype, (const char *)idx_data + (idx_size * start_idx));
  69             checkGLcall("glDrawElements");
  70         }
  71     }
  72     else
  73     {
  74         gl_info->gl_ops.gl.p_glDrawArrays(primitive_type, start_idx, count);
  75         checkGLcall("glDrawArrays");
  76     }
  77 }
  78
  79 /*
  80  * Actually draw using the supplied information.
  81  * Slower GL version which extracts info about each vertex in turn
  82  */
  83
  84 /* Context activation is done by the caller. */
  85 static void drawStridedSlow(const struct wined3d_device *device, const struct wined3d_context *context,
  86         const struct wined3d_stream_info *si, UINT NumVertexes, GLenum glPrimType,
  87         const void *idxData, UINT idxSize, UINT startIdx)
  88 {
  89     unsigned int               textureNo    = 0;
  90     const WORD                *pIdxBufS     = NULL;
  91     const DWORD               *pIdxBufL     = NULL;
  92     UINT vx_index;
  93     const struct wined3d_state *state = &device->stateBlock->state;
  94     LONG SkipnStrides = startIdx;
  95     BOOL pixelShader = use_ps(state);
  96     BOOL specular_fog = FALSE;
  97     const BYTE *texCoords[WINED3DDP_MAXTEXCOORD];
  98     const BYTE *diffuse = NULL, *specular = NULL, *normal = NULL, *position = NULL;
  99     const struct wined3d_gl_info *gl_info = context->gl_info;
 100     UINT texture_stages = gl_info->limits.texture_stages;
 101     const struct wined3d_stream_info_element *element;
 102     UINT num_untracked_materials;
 103     DWORD tex_mask = 0;
 104
 105     TRACE("Using slow vertex array code\n");
 106
 107     /* Variable Initialization */
 108     if (idxSize)
 109     {
 110         /* Immediate mode drawing can't make use of indices in a vbo - get the
 111          * data from the index buffer. If the index buffer has no vbo (not
 112          * supported or other reason), or with user pointer drawing idxData
 113          * will be non-NULL. */
 114         if (!idxData)
 115             idxData = buffer_get_sysmem(state->index_buffer, gl_info);
 116
 117         if (idxSize == 2) pIdxBufS = idxData;
 118         else pIdxBufL = idxData;
 119     } else if (idxData) {
 120         ERR("non-NULL idxData with 0 idxSize, this should never happen\n");
 121         return;
 122     }
 123
 124     /* Start drawing in GL */
 125     gl_info->gl_ops.gl.p_glBegin(glPrimType);
 126
 127     if (si->use_map & (1 << WINED3D_FFP_POSITION))
 128     {
 129         element = &si->elements[WINED3D_FFP_POSITION];
 130         position = element->data.addr;
 131     }
 132
 133     if (si->use_map & (1 << WINED3D_FFP_NORMAL))
 134     {
 135         element = &si->elements[WINED3D_FFP_NORMAL];
 136         normal = element->data.addr;
 137     }
 138     else
 139     {
 140         gl_info->gl_ops.gl.p_glNormal3f(0, 0, 0);
 141     }
 142
 143     num_untracked_materials = context->num_untracked_materials;
 144     if (si->use_map & (1 << WINED3D_FFP_DIFFUSE))
 145     {
 146         element = &si->elements[WINED3D_FFP_DIFFUSE];
 147         diffuse = element->data.addr;
 148
 149         if (num_untracked_materials && element->format->id != WINED3DFMT_B8G8R8A8_UNORM)
 150             FIXME("Implement diffuse color tracking from %s\n", debug_d3dformat(element->format->id));
 151     }
 152     else
 153     {
 154         gl_info->gl_ops.gl.p_glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 155     }
 156
 157     if (si->use_map & (1 << WINED3D_FFP_SPECULAR))
 158     {
 159         element = &si->elements[WINED3D_FFP_SPECULAR];
 160         specular = element->data.addr;
 161
 162         /* special case where the fog density is stored in the specular alpha channel */
 163         if (state->render_states[WINED3D_RS_FOGENABLE]
 164                 && (state->render_states[WINED3D_RS_FOGVERTEXMODE] == WINED3D_FOG_NONE
 165                     || si->elements[WINED3D_FFP_POSITION].format->id == WINED3DFMT_R32G32B32A32_FLOAT)
 166                 && state->render_states[WINED3D_RS_FOGTABLEMODE] == WINED3D_FOG_NONE)
 167         {
 168             if (gl_info->supported[EXT_FOG_COORD])
 169             {
 170                 if (element->format->id == WINED3DFMT_B8G8R8A8_UNORM) specular_fog = TRUE;
 171                 else FIXME("Implement fog coordinates from %s\n", debug_d3dformat(element->format->id));
 172             }
 173             else
 174             {
 175                 static BOOL warned;
 176
 177                 if (!warned)
 178                 {
 179                     /* TODO: Use the fog table code from old ddraw */
 180                     FIXME("Implement fog for transformed vertices in software\n");
 181                     warned = TRUE;
 182                 }
 183             }
 184         }
 185     }
 186     else if (gl_info->supported[EXT_SECONDARY_COLOR])
 187     {
 188         GL_EXTCALL(glSecondaryColor3fEXT)(0, 0, 0);
 189     }
 190
 191     for (textureNo = 0; textureNo < texture_stages; ++textureNo)
 192     {
 193         int coordIdx = state->texture_states[textureNo][WINED3D_TSS_TEXCOORD_INDEX];
 194         DWORD texture_idx = device->texUnitMap[textureNo];
 195
 196         if (!gl_info->supported[ARB_MULTITEXTURE] && textureNo > 0)
 197         {
 198             FIXME("Program using multiple concurrent textures which this opengl implementation doesn't support\n");
 199             continue;
 200         }
 201
 202         if (!pixelShader && !state->textures[textureNo]) continue;
 203
 204         if (texture_idx == WINED3D_UNMAPPED_STAGE) continue;
 205
 206         if (coordIdx > 7)
 207         {
 208             TRACE("tex: %d - Skip tex coords, as being system generated\n", textureNo);
 209             continue;
 210         }
 211         else if (coordIdx < 0)
 212         {
 213             FIXME("tex: %d - Coord index %d is less than zero, expect a crash.\n", textureNo, coordIdx);
 214             continue;
 215         }
 216
 217         if (si->use_map & (1 << (WINED3D_FFP_TEXCOORD0 + coordIdx)))
 218         {
 219             element = &si->elements[WINED3D_FFP_TEXCOORD0 + coordIdx];
 220             texCoords[coordIdx] = element->data.addr;
 221             tex_mask |= (1 << textureNo);
 222         }
 223         else
 224         {
 225             TRACE("tex: %d - Skipping tex coords, as no data supplied\n", textureNo);
 226             if (gl_info->supported[ARB_MULTITEXTURE])
 227                 GL_EXTCALL(glMultiTexCoord4fARB(GL_TEXTURE0_ARB + texture_idx, 0, 0, 0, 1));
 228             else
 229                 gl_info->gl_ops.gl.p_glTexCoord4f(0, 0, 0, 1);
 230         }
 231     }
 232
 233     /* We shouldn't start this function if any VBO is involved. Should I put a safety check here?
 234      * Guess it's not necessary(we crash then anyway) and would only eat CPU time
 235      */
 236
 237     /* For each primitive */
 238     for (vx_index = 0; vx_index < NumVertexes; ++vx_index) {
 239         UINT texture, tmp_tex_mask;
 240         /* Blending data and Point sizes are not supported by this function. They are not supported by the fixed
 241          * function pipeline at all. A Fixme for them is printed after decoding the vertex declaration
 242          */
 243
 244         /* For indexed data, we need to go a few more strides in */
 245         if (idxData)
 246         {
 247             /* Indexed so work out the number of strides to skip */
 248             if (idxSize == 2)
 249                 SkipnStrides = pIdxBufS[startIdx + vx_index] + state->base_vertex_index;
 250             else
 251                 SkipnStrides = pIdxBufL[startIdx + vx_index] + state->base_vertex_index;
 252         }
 253
 254         tmp_tex_mask = tex_mask;
 255         for (texture = 0; tmp_tex_mask; tmp_tex_mask >>= 1, ++texture)
 256         {
 257             int coord_idx;
 258             const void *ptr;
 259             DWORD texture_idx;
 260
 261             if (!(tmp_tex_mask & 1)) continue;
 262
 263             coord_idx = state->texture_states[texture][WINED3D_TSS_TEXCOORD_INDEX];
 264             ptr = texCoords[coord_idx] + (SkipnStrides * si->elements[WINED3D_FFP_TEXCOORD0 + coord_idx].stride);
 265
 266             texture_idx = device->texUnitMap[texture];
 267             multi_texcoord_funcs[si->elements[WINED3D_FFP_TEXCOORD0 + coord_idx].format->emit_idx](
 268                     GL_TEXTURE0_ARB + texture_idx, ptr);
 269         }
 270
 271         /* Diffuse -------------------------------- */
 272         if (diffuse) {
 273             const void *ptrToCoords = diffuse + SkipnStrides * si->elements[WINED3D_FFP_DIFFUSE].stride;
 274
 275             diffuse_funcs[si->elements[WINED3D_FFP_DIFFUSE].format->emit_idx](ptrToCoords);
 276             if (num_untracked_materials)
 277             {
 278                 DWORD diffuseColor = ((const DWORD *)ptrToCoords)[0];
 279                 unsigned char i;
 280                 float color[4];
 281
 282                 color[0] = D3DCOLOR_B_R(diffuseColor) / 255.0f;
 283                 color[1] = D3DCOLOR_B_G(diffuseColor) / 255.0f;
 284                 color[2] = D3DCOLOR_B_B(diffuseColor) / 255.0f;
 285                 color[3] = D3DCOLOR_B_A(diffuseColor) / 255.0f;
 286
 287                 for (i = 0; i < num_untracked_materials; ++i)
 288                 {
 289                     gl_info->gl_ops.gl.p_glMaterialfv(GL_FRONT_AND_BACK, context->untracked_materials[i], color);
 290                 }
 291             }
 292         }
 293
 294         /* Specular ------------------------------- */
 295         if (specular) {
 296             const void *ptrToCoords = specular + SkipnStrides * si->elements[WINED3D_FFP_SPECULAR].stride;
 297
 298             specular_funcs[si->elements[WINED3D_FFP_SPECULAR].format->emit_idx](ptrToCoords);
 299
 300             if (specular_fog)
 301             {
 302                 DWORD specularColor = *(const DWORD *)ptrToCoords;
 303                 GL_EXTCALL(glFogCoordfEXT((float) (specularColor >> 24)));
 304             }
 305         }
 306
 307         /* Normal -------------------------------- */
 308         if (normal)
 309         {
 310             const void *ptrToCoords = normal + SkipnStrides * si->elements[WINED3D_FFP_NORMAL].stride;
 311             normal_funcs[si->elements[WINED3D_FFP_NORMAL].format->emit_idx](ptrToCoords);
 312         }
 313
 314         /* Position -------------------------------- */
 315         if (position) {
 316             const void *ptrToCoords = position + SkipnStrides * si->elements[WINED3D_FFP_POSITION].stride;
 317             position_funcs[si->elements[WINED3D_FFP_POSITION].format->emit_idx](ptrToCoords);
 318         }
 319
 320         /* For non indexed mode, step onto next parts */
 321         if (!idxData) ++SkipnStrides;
 322     }
 323
 324     gl_info->gl_ops.gl.p_glEnd();
 325     checkGLcall("glEnd and previous calls");
 326 }
 327
 328 /* Context activation is done by the caller. */
 329 static inline void send_attribute(const struct wined3d_gl_info *gl_info,
 330         enum wined3d_format_id format, const UINT index, const void *ptr)
 331 {
 332     switch(format)
 333     {
 334         case WINED3DFMT_R32_FLOAT:
 335             GL_EXTCALL(glVertexAttrib1fvARB(index, ptr));
 336             break;
 337         case WINED3DFMT_R32G32_FLOAT:
 338             GL_EXTCALL(glVertexAttrib2fvARB(index, ptr));
 339             break;
 340         case WINED3DFMT_R32G32B32_FLOAT:
 341             GL_EXTCALL(glVertexAttrib3fvARB(index, ptr));
 342             break;
 343         case WINED3DFMT_R32G32B32A32_FLOAT:
 344             GL_EXTCALL(glVertexAttrib4fvARB(index, ptr));
 345             break;
 346
 347         case WINED3DFMT_R8G8B8A8_UINT:
 348             GL_EXTCALL(glVertexAttrib4ubvARB(index, ptr));
 349             break;
 350         case WINED3DFMT_B8G8R8A8_UNORM:
 351             if (gl_info->supported[ARB_VERTEX_ARRAY_BGRA])
 352             {
 353                 const DWORD *src = ptr;
 354                 DWORD c = *src & 0xff00ff00;
 355                 c |= (*src & 0xff0000) >> 16;
 356                 c |= (*src & 0xff) << 16;
 357                 GL_EXTCALL(glVertexAttrib4NubvARB(index, (GLubyte *)&c));
 358                 break;
 359             }
 360             /* else fallthrough */
 361         case WINED3DFMT_R8G8B8A8_UNORM:
 362             GL_EXTCALL(glVertexAttrib4NubvARB(index, ptr));
 363             break;
 364
 365         case WINED3DFMT_R16G16_SINT:
 366             GL_EXTCALL(glVertexAttrib4svARB(index, ptr));
 367             break;
 368         case WINED3DFMT_R16G16B16A16_SINT:
 369             GL_EXTCALL(glVertexAttrib4svARB(index, ptr));
 370             break;
 371
 372         case WINED3DFMT_R16G16_SNORM:
 373         {
 374             GLshort s[4] = {((const GLshort *)ptr)[0], ((const GLshort *)ptr)[1], 0, 1};
 375             GL_EXTCALL(glVertexAttrib4NsvARB(index, s));
 376             break;
 377         }
 378         case WINED3DFMT_R16G16_UNORM:
 379         {
 380             GLushort s[4] = {((const GLushort *)ptr)[0], ((const GLushort *)ptr)[1], 0, 1};
 381             GL_EXTCALL(glVertexAttrib4NusvARB(index, s));
 382             break;
 383         }
 384         case WINED3DFMT_R16G16B16A16_SNORM:
 385             GL_EXTCALL(glVertexAttrib4NsvARB(index, ptr));
 386             break;
 387         case WINED3DFMT_R16G16B16A16_UNORM:
 388             GL_EXTCALL(glVertexAttrib4NusvARB(index, ptr));
 389             break;
 390
 391         case WINED3DFMT_R10G10B10A2_UINT:
 392             FIXME("Unsure about WINED3DDECLTYPE_UDEC3\n");
 393             /*glVertexAttrib3usvARB(instancedData[j], (GLushort *) ptr); Does not exist */
 394             break;
 395         case WINED3DFMT_R10G10B10A2_SNORM:
 396             FIXME("Unsure about WINED3DDECLTYPE_DEC3N\n");
 397             /*glVertexAttrib3NusvARB(instancedData[j], (GLushort *) ptr); Does not exist */
 398             break;
 399
 400         case WINED3DFMT_R16G16_FLOAT:
 401             /* Are those 16 bit floats. C doesn't have a 16 bit float type. I could read the single bits and calculate a 4
 402              * byte float according to the IEEE standard
 403              */
 404             if (gl_info->supported[NV_HALF_FLOAT] && gl_info->supported[NV_VERTEX_PROGRAM])
 405             {
 406                 /* Not supported by GL_ARB_half_float_vertex */
 407                 GL_EXTCALL(glVertexAttrib2hvNV(index, ptr));
 408             }
 409             else
 410             {
 411                 float x = float_16_to_32(((const unsigned short *)ptr) + 0);
 412                 float y = float_16_to_32(((const unsigned short *)ptr) + 1);
 413                 GL_EXTCALL(glVertexAttrib2fARB(index, x, y));
 414             }
 415             break;
 416         case WINED3DFMT_R16G16B16A16_FLOAT:
 417             if (gl_info->supported[NV_HALF_FLOAT] && gl_info->supported[NV_VERTEX_PROGRAM])
 418             {
 419                 /* Not supported by GL_ARB_half_float_vertex */
 420                 GL_EXTCALL(glVertexAttrib4hvNV(index, ptr));
 421             }
 422             else
 423             {
 424                 float x = float_16_to_32(((const unsigned short *)ptr) + 0);
 425                 float y = float_16_to_32(((const unsigned short *)ptr) + 1);
 426                 float z = float_16_to_32(((const unsigned short *)ptr) + 2);
 427                 float w = float_16_to_32(((const unsigned short *)ptr) + 3);
 428                 GL_EXTCALL(glVertexAttrib4fARB(index, x, y, z, w));
 429             }
 430             break;
 431
 432         default:
 433             ERR("Unexpected attribute format: %s\n", debug_d3dformat(format));
 434             break;
 435     }
 436 }
 437
 438 /* Context activation is done by the caller. */
 439 static void drawStridedSlowVs(const struct wined3d_gl_info *gl_info, const struct wined3d_state *state,
 440         const struct wined3d_stream_info *si, UINT numberOfVertices, GLenum glPrimitiveType,
 441         const void *idxData, UINT idxSize, UINT startIdx)
 442 {
 443     LONG SkipnStrides = startIdx + state->load_base_vertex_index;
 444     const DWORD *pIdxBufL = NULL;
 445     const WORD *pIdxBufS = NULL;
 446     UINT vx_index;
 447     int i;
 448     const BYTE *ptr;
 449
 450     if (idxSize)
 451     {
 452         /* Immediate mode drawing can't make use of indices in a vbo - get the
 453          * data from the index buffer. If the index buffer has no vbo (not
 454          * supported or other reason), or with user pointer drawing idxData
 455          * will be non-NULL. */
 456         if (!idxData)
 457             idxData = buffer_get_sysmem(state->index_buffer, gl_info);
 458
 459         if (idxSize == 2) pIdxBufS = idxData;
 460         else pIdxBufL = idxData;
 461     } else if (idxData) {
 462         ERR("non-NULL idxData with 0 idxSize, this should never happen\n");
 463         return;
 464     }
 465
 466     /* Start drawing in GL */
 467     gl_info->gl_ops.gl.p_glBegin(glPrimitiveType);
 468
 469     for (vx_index = 0; vx_index < numberOfVertices; ++vx_index)
 470     {
 471         if (idxData)
 472         {
 473             /* Indexed so work out the number of strides to skip */
 474             if (idxSize == 2)
 475                 SkipnStrides = pIdxBufS[startIdx + vx_index] + state->load_base_vertex_index;
 476             else
 477                 SkipnStrides = pIdxBufL[startIdx + vx_index] + state->load_base_vertex_index;
 478         }
 479
 480         for (i = MAX_ATTRIBS - 1; i >= 0; i--)
 481         {
 482             if (!(si->use_map & (1 << i))) continue;
 483
 484             ptr = si->elements[i].data.addr + si->elements[i].stride * SkipnStrides;
 485
 486             send_attribute(gl_info, si->elements[i].format->id, i, ptr);
 487         }
 488         SkipnStrides++;
 489     }
 490
 491     gl_info->gl_ops.gl.p_glEnd();
 492 }
 493
 494 /* Context activation is done by the caller. */
 495 static void drawStridedInstanced(const struct wined3d_gl_info *gl_info, const struct wined3d_state *state,
 496         const struct wined3d_stream_info *si, UINT numberOfVertices, GLenum glPrimitiveType,
 497         const void *idxData, UINT idxSize, UINT startIdx, UINT base_vertex_index, UINT instance_count)
 498 {
 499     int numInstancedAttribs = 0, j;
 500     UINT instancedData[sizeof(si->elements) / sizeof(*si->elements) /* 16 */];
 501     GLenum idxtype = idxSize == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT;
 502     UINT i;
 503
 504     if (!idxSize)
 505     {
 506         /* This is a nasty thing. MSDN says no hardware supports that and apps have to use software vertex processing.
 507          * We don't support this for now
 508          *
 509          * Shouldn't be too hard to support with opengl, in theory just call glDrawArrays instead of drawElements.
 510          * But the StreamSourceFreq value has a different meaning in that situation.
 511          */
 512         FIXME("Non-indexed instanced drawing is not supported\n");
 513         return;
 514     }
 515
 516     for (i = 0; i < sizeof(si->elements) / sizeof(*si->elements); ++i)
 517     {
 518         if (!(si->use_map & (1 << i))) continue;
 519
 520         if (state->streams[si->elements[i].stream_idx].flags & WINED3DSTREAMSOURCE_INSTANCEDATA)
 521         {
 522             instancedData[numInstancedAttribs] = i;
 523             numInstancedAttribs++;
 524         }
 525     }
 526
 527     for (i = 0; i < instance_count; ++i)
 528     {
 529         /* Specify the instanced attributes using immediate mode calls */
 530         for(j = 0; j < numInstancedAttribs; j++) {
 531             const BYTE *ptr = si->elements[instancedData[j]].data.addr
 532                     + si->elements[instancedData[j]].stride * i;
 533             if (si->elements[instancedData[j]].data.buffer_object)
 534             {
 535                 struct wined3d_buffer *vb = state->streams[si->elements[instancedData[j]].stream_idx].buffer;
 536                 ptr += (ULONG_PTR)buffer_get_sysmem(vb, gl_info);
 537             }
 538
 539             send_attribute(gl_info, si->elements[instancedData[j]].format->id, instancedData[j], ptr);
 540         }
 541
 542         if (gl_info->supported[ARB_DRAW_ELEMENTS_BASE_VERTEX])
 543         {
 544             GL_EXTCALL(glDrawElementsBaseVertex(glPrimitiveType, numberOfVertices, idxtype,
 545                         (const char *)idxData+(idxSize * startIdx), base_vertex_index));
 546             checkGLcall("glDrawElementsBaseVertex");
 547         }
 548         else
 549         {
 550             gl_info->gl_ops.gl.p_glDrawElements(glPrimitiveType, numberOfVertices, idxtype,
 551                         (const char *)idxData + (idxSize * startIdx));
 552             checkGLcall("glDrawElements");
 553         }
 554     }
 555 }
 556
 557 static void remove_vbos(const struct wined3d_gl_info *gl_info,
 558         const struct wined3d_state *state, struct wined3d_stream_info *s)
 559 {
 560     unsigned int i;
 561
 562     for (i = 0; i < (sizeof(s->elements) / sizeof(*s->elements)); ++i)
 563     {
 564         struct wined3d_stream_info_element *e;
 565
 566         if (!(s->use_map & (1 << i))) continue;
 567
 568         e = &s->elements[i];
 569         if (e->data.buffer_object)
 570         {
 571             struct wined3d_buffer *vb = state->streams[e->stream_idx].buffer;
 572             e->data.buffer_object = 0;
 573             e->data.addr = (BYTE *)((ULONG_PTR)e->data.addr + (ULONG_PTR)buffer_get_sysmem(vb, gl_info));
 574         }
 575     }
 576 }
 577
 578 /* Routine common to the draw primitive and draw indexed primitive routines */
 579 void draw_primitive(struct wined3d_device *device, UINT start_idx, UINT index_count,
 580         UINT start_instance, UINT instance_count, BOOL indexed, const void *idx_data)
 581 {
 582     const struct wined3d_state *state = &device->stateBlock->state;
 583     const struct wined3d_stream_info *stream_info;
 584     struct wined3d_event_query *ib_query = NULL;
 585     struct wined3d_stream_info si_emulated;
 586     const struct wined3d_gl_info *gl_info;
 587     struct wined3d_context *context;
 588     BOOL emulation = FALSE;
 589     UINT idx_size = 0;
 590     unsigned int i;
 591
 592     if (!index_count) return;
 593
 594     if (state->render_states[WINED3D_RS_COLORWRITEENABLE])
 595     {
 596         /* Invalidate the back buffer memory so LockRect will read it the next time */
 597         for (i = 0; i < device->adapter->gl_info.limits.buffers; ++i)
 598         {
 599             struct wined3d_surface *target = device->fb.render_targets[i];
 600             if (target)
 601             {
 602                 surface_load_location(target, target->draw_binding, NULL);
 603                 surface_modify_location(target, target->draw_binding, TRUE);
 604             }
 605         }
 606     }
 607
 608     /* Signals other modules that a drawing is in progress and the stateblock finalized */
 609     device->isInDraw = TRUE;
 610
 611     context = context_acquire(device, device->fb.render_targets[0]);
 612     if (!context->valid)
 613     {
 614         context_release(context);
 615         WARN("Invalid context, skipping draw.\n");
 616         return;
 617     }
 618     gl_info = context->gl_info;
 619
 620     if (device->fb.depth_stencil)
 621     {
 622         /* Note that this depends on the context_acquire() call above to set
 623          * context->render_offscreen properly. We don't currently take the
 624          * Z-compare function into account, but we could skip loading the
 625          * depthstencil for D3DCMP_NEVER and D3DCMP_ALWAYS as well. Also note
 626          * that we never copy the stencil data.*/
 627         DWORD location = context->render_offscreen ? device->fb.depth_stencil->draw_binding : SFLAG_INDRAWABLE;
 628         if (state->render_states[WINED3D_RS_ZWRITEENABLE] || state->render_states[WINED3D_RS_ZENABLE])
 629         {
 630             struct wined3d_surface *ds = device->fb.depth_stencil;
 631             RECT current_rect, draw_rect, r;
 632
 633             if (!context->render_offscreen && ds != device->onscreen_depth_stencil)
 634                 device_switch_onscreen_ds(device, context, ds);
 635
 636             if (ds->flags & location)
 637                 SetRect(&current_rect, 0, 0, ds->ds_current_size.cx, ds->ds_current_size.cy);
 638             else
 639                 SetRectEmpty(&current_rect);
 640
 641             wined3d_get_draw_rect(state, &draw_rect);
 642
 643             IntersectRect(&r, &draw_rect, &current_rect);
 644             if (!EqualRect(&r, &draw_rect))
 645                 surface_load_ds_location(ds, context, location);
 646         }
 647     }
 648
 649     if (!context_apply_draw_state(context, device))
 650     {
 651         context_release(context);
 652         WARN("Unable to apply draw state, skipping draw.\n");
 653         return;
 654     }
 655
 656     if (device->fb.depth_stencil && state->render_states[WINED3D_RS_ZWRITEENABLE])
 657     {
 658         struct wined3d_surface *ds = device->fb.depth_stencil;
 659         DWORD location = context->render_offscreen ? ds->draw_binding : SFLAG_INDRAWABLE;
 660
 661         surface_modify_ds_location(ds, location, ds->ds_current_size.cx, ds->ds_current_size.cy);
 662     }
 663
 664     if ((!gl_info->supported[WINED3D_GL_VERSION_2_0]
 665             || !gl_info->supported[NV_POINT_SPRITE])
 666             && context->render_offscreen
 667             && state->render_states[WINED3D_RS_POINTSPRITEENABLE]
 668             && state->gl_primitive_type == GL_POINTS)
 669     {
 670         FIXME("Point sprite coordinate origin switching not supported.\n");
 671     }
 672
 673     stream_info = &device->strided_streams;
 674     if (device->instance_count)
 675         instance_count = device->instance_count;
 676
 677     if (indexed)
 678     {
 679         struct wined3d_buffer *index_buffer = state->index_buffer;
 680         if (!index_buffer->buffer_object || !stream_info->all_vbo)
 681             idx_data = index_buffer->resource.allocatedMemory;
 682         else
 683         {
 684             ib_query = index_buffer->query;
 685             idx_data = NULL;
 686         }
 687
 688         if (state->index_format == WINED3DFMT_R16_UINT)
 689             idx_size = 2;
 690         else
 691             idx_size = 4;
 692     }
 693
 694     if (!use_vs(state))
 695     {
 696         if (!stream_info->position_transformed && context->num_untracked_materials
 697                 && state->render_states[WINED3D_RS_LIGHTING])
 698         {
 699             static BOOL warned;
 700
 701             if (!warned++)
 702                 FIXME("Using software emulation because not all material properties could be tracked.\n");
 703             else
 704                 WARN("Using software emulation because not all material properties could be tracked.\n");
 705             emulation = TRUE;
 706         }
 707         else if (context->fog_coord && state->render_states[WINED3D_RS_FOGENABLE])
 708         {
 709             static BOOL warned;
 710
 711             /* Either write a pipeline replacement shader or convert the
 712              * specular alpha from unsigned byte to a float in the vertex
 713              * buffer. */
 714             if (!warned++)
 715                 FIXME("Using software emulation because manual fog coordinates are provided.\n");
 716             else
 717                 WARN("Using software emulation because manual fog coordinates are provided.\n");
 718             emulation = TRUE;
 719         }
 720
 721         if (emulation)
 722         {
 723             si_emulated = device->strided_streams;
 724             remove_vbos(gl_info, state, &si_emulated);
 725             stream_info = &si_emulated;
 726         }
 727     }
 728
 729     if (device->useDrawStridedSlow || emulation)
 730     {
 731         /* Immediate mode drawing. */
 732         if (use_vs(state))
 733         {
 734             static BOOL warned;
 735
 736             if (!warned++)
 737                 FIXME("Using immediate mode with vertex shaders for half float emulation.\n");
 738             else
 739                 WARN("Using immediate mode with vertex shaders for half float emulation.\n");
 740
 741             drawStridedSlowVs(gl_info, state, stream_info, index_count,
 742                     state->gl_primitive_type, idx_data, idx_size, start_idx);
 743         }
 744         else
 745         {
 746             drawStridedSlow(device, context, stream_info, index_count,
 747                     state->gl_primitive_type, idx_data, idx_size, start_idx);
 748         }
 749     }
 750     else if (!gl_info->supported[ARB_INSTANCED_ARRAYS] && instance_count)
 751     {
 752         /* Instancing emulation by mixing immediate mode and arrays. */
 753         drawStridedInstanced(gl_info, state, stream_info, index_count, state->gl_primitive_type,
 754                 idx_data, idx_size, start_idx, state->base_vertex_index, instance_count);
 755     }
 756     else
 757     {
 758         drawStridedFast(gl_info, state->gl_primitive_type, index_count, idx_size, idx_data,
 759                 start_idx, state->base_vertex_index, start_instance, instance_count);
 760     }
 761
 762     if (ib_query)
 763         wined3d_event_query_issue(ib_query, device);
 764     for (i = 0; i < device->num_buffer_queries; ++i)
 765     {
 766         wined3d_event_query_issue(device->buffer_queries[i], device);
 767     }
 768
 769     if (wined3d_settings.strict_draw_ordering)
 770         gl_info->gl_ops.gl.p_glFlush(); /* Flush to ensure ordering across contexts. */
 771
 772     context_release(context);
 773
 774     TRACE("Done all gl drawing\n");
 775
 776     /* Control goes back to the device, stateblock values may change again */
 777     device->isInDraw = FALSE;
 778 }