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

   1 /*
   2  * Copyright 2002-2005 Jason Edmeades
   3  * Copyright 2002-2005 Raphael Junqueira
   4  * Copyright 2004 Christian Costa
   5  * Copyright 2005 Oliver Stieber
   6  * Copyright 2007-2010 Stefan Dösinger for CodeWeavers
   7  * Copyright 2009 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 #include "config.h"
  26 #include "wine/port.h"
  27
  28 #include "wined3d_private.h"
  29
  30 WINE_DEFAULT_DEBUG_CHANNEL(d3d);
  31
  32 #define VB_MAXDECLCHANGES     100     /* After that number of decl changes we stop converting */
  33 #define VB_RESETDECLCHANGE    1000    /* Reset the decl changecount after that number of draws */
  34 #define VB_MAXFULLCONVERSIONS 5       /* Number of full conversions before we stop converting */
  35 #define VB_RESETFULLCONVS     20      /* Reset full conversion counts after that number of draws */
  36
  37 static inline BOOL buffer_add_dirty_area(struct wined3d_buffer *This, UINT offset, UINT size)
  38 {
  39     if (!This->buffer_object) return TRUE;
  40
  41     if (This->maps_size <= This->modified_areas)
  42     {
  43         void *new = HeapReAlloc(GetProcessHeap(), 0, This->maps,
  44                                 This->maps_size * 2 * sizeof(*This->maps));
  45         if (!new)
  46         {
  47             ERR("Out of memory\n");
  48             return FALSE;
  49         }
  50         else
  51         {
  52             This->maps = new;
  53             This->maps_size *= 2;
  54         }
  55     }
  56
  57     if(offset > This->resource.size || offset + size > This->resource.size)
  58     {
  59         WARN("Invalid range dirtified, marking entire buffer dirty\n");
  60         offset = 0;
  61         size = This->resource.size;
  62     }
  63     else if(!offset && !size)
  64     {
  65         size = This->resource.size;
  66     }
  67
  68     This->maps[This->modified_areas].offset = offset;
  69     This->maps[This->modified_areas].size = size;
  70     This->modified_areas++;
  71     return TRUE;
  72 }
  73
  74 static inline void buffer_clear_dirty_areas(struct wined3d_buffer *This)
  75 {
  76     This->modified_areas = 0;
  77 }
  78
  79 static inline BOOL buffer_is_dirty(struct wined3d_buffer *This)
  80 {
  81     return This->modified_areas != 0;
  82 }
  83
  84 static inline BOOL buffer_is_fully_dirty(struct wined3d_buffer *This)
  85 {
  86     unsigned int i;
  87
  88     for(i = 0; i < This->modified_areas; i++)
  89     {
  90         if(This->maps[i].offset == 0 && This->maps[i].size == This->resource.size)
  91         {
  92             return TRUE;
  93         }
  94     }
  95     return FALSE;
  96 }
  97
  98 /* Context activation is done by the caller */
  99 static void delete_gl_buffer(struct wined3d_buffer *This, const struct wined3d_gl_info *gl_info)
 100 {
 101     if(!This->buffer_object) return;
 102
 103     ENTER_GL();
 104     GL_EXTCALL(glDeleteBuffersARB(1, &This->buffer_object));
 105     checkGLcall("glDeleteBuffersARB");
 106     LEAVE_GL();
 107     This->buffer_object = 0;
 108
 109     if(This->query)
 110     {
 111         wined3d_event_query_destroy(This->query);
 112         This->query = NULL;
 113     }
 114     This->flags &= ~WINED3D_BUFFER_APPLESYNC;
 115 }
 116
 117 /* Context activation is done by the caller. */
 118 static void buffer_create_buffer_object(struct wined3d_buffer *This, const struct wined3d_gl_info *gl_info)
 119 {
 120     GLenum error, gl_usage;
 121
 122     TRACE("Creating an OpenGL vertex buffer object for IWineD3DVertexBuffer %p Usage(%s)\n",
 123             This, debug_d3dusage(This->resource.usage));
 124
 125     ENTER_GL();
 126
 127     /* Make sure that the gl error is cleared. Do not use checkGLcall
 128     * here because checkGLcall just prints a fixme and continues. However,
 129     * if an error during VBO creation occurs we can fall back to non-vbo operation
 130     * with full functionality(but performance loss)
 131     */
 132     while (glGetError() != GL_NO_ERROR);
 133
 134     /* Basically the FVF parameter passed to CreateVertexBuffer is no good
 135      * It is the FVF set with IWineD3DDevice::SetFVF or the Vertex Declaration set with
 136      * IWineD3DDevice::SetVertexDeclaration that decides how the vertices in the buffer
 137      * look like. This means that on each DrawPrimitive call the vertex buffer has to be verified
 138      * to check if the rhw and color values are in the correct format.
 139      */
 140
 141     GL_EXTCALL(glGenBuffersARB(1, &This->buffer_object));
 142     error = glGetError();
 143     if (!This->buffer_object || error != GL_NO_ERROR)
 144     {
 145         ERR("Failed to create a VBO with error %s (%#x)\n", debug_glerror(error), error);
 146         LEAVE_GL();
 147         goto fail;
 148     }
 149
 150     if(This->buffer_type_hint == GL_ELEMENT_ARRAY_BUFFER_ARB)
 151     {
 152         IWineD3DDeviceImpl_MarkStateDirty(This->resource.device, STATE_INDEXBUFFER);
 153     }
 154     GL_EXTCALL(glBindBufferARB(This->buffer_type_hint, This->buffer_object));
 155     error = glGetError();
 156     if (error != GL_NO_ERROR)
 157     {
 158         ERR("Failed to bind the VBO with error %s (%#x)\n", debug_glerror(error), error);
 159         LEAVE_GL();
 160         goto fail;
 161     }
 162
 163     /* Don't use static, because dx apps tend to update the buffer
 164      * quite often even if they specify 0 usage.
 165      */
 166     if(This->resource.usage & WINED3DUSAGE_DYNAMIC)
 167     {
 168         TRACE("Gl usage = GL_STREAM_DRAW_ARB\n");
 169         gl_usage = GL_STREAM_DRAW_ARB;
 170
 171         if(gl_info->supported[APPLE_FLUSH_BUFFER_RANGE])
 172         {
 173             GL_EXTCALL(glBufferParameteriAPPLE(This->buffer_type_hint, GL_BUFFER_FLUSHING_UNMAP_APPLE, GL_FALSE));
 174             checkGLcall("glBufferParameteriAPPLE(This->buffer_type_hint, GL_BUFFER_FLUSHING_UNMAP_APPLE, GL_FALSE)");
 175             This->flags |= WINED3D_BUFFER_FLUSH;
 176
 177             GL_EXTCALL(glBufferParameteriAPPLE(This->buffer_type_hint, GL_BUFFER_SERIALIZED_MODIFY_APPLE, GL_FALSE));
 178             checkGLcall("glBufferParameteriAPPLE(This->buffer_type_hint, GL_BUFFER_SERIALIZED_MODIFY_APPLE, GL_FALSE)");
 179             This->flags |= WINED3D_BUFFER_APPLESYNC;
 180         }
 181         /* No setup is needed here for GL_ARB_map_buffer_range */
 182     }
 183     else
 184     {
 185         TRACE("Gl usage = GL_DYNAMIC_DRAW_ARB\n");
 186         gl_usage = GL_DYNAMIC_DRAW_ARB;
 187     }
 188
 189     /* Reserve memory for the buffer. The amount of data won't change
 190      * so we are safe with calling glBufferData once and
 191      * calling glBufferSubData on updates. Upload the actual data in case
 192      * we're not double buffering, so we can release the heap mem afterwards
 193      */
 194     GL_EXTCALL(glBufferDataARB(This->buffer_type_hint, This->resource.size, This->resource.allocatedMemory, gl_usage));
 195     error = glGetError();
 196     LEAVE_GL();
 197     if (error != GL_NO_ERROR)
 198     {
 199         ERR("glBufferDataARB failed with error %s (%#x)\n", debug_glerror(error), error);
 200         goto fail;
 201     }
 202
 203     This->buffer_object_size = This->resource.size;
 204     This->buffer_object_usage = gl_usage;
 205
 206     if(This->flags & WINED3D_BUFFER_DOUBLEBUFFER)
 207     {
 208         if(!buffer_add_dirty_area(This, 0, 0))
 209         {
 210             ERR("buffer_add_dirty_area failed, this is not expected\n");
 211             goto fail;
 212         }
 213     }
 214     else
 215     {
 216         HeapFree(GetProcessHeap(), 0, This->resource.heapMemory);
 217         This->resource.allocatedMemory = NULL;
 218         This->resource.heapMemory = NULL;
 219     }
 220
 221     return;
 222
 223 fail:
 224     /* Clean up all vbo init, but continue because we can work without a vbo :-) */
 225     ERR("Failed to create a vertex buffer object. Continuing, but performance issues may occur\n");
 226     delete_gl_buffer(This, gl_info);
 227     buffer_clear_dirty_areas(This);
 228 }
 229
 230 static BOOL buffer_process_converted_attribute(struct wined3d_buffer *This,
 231         const enum wined3d_buffer_conversion_type conversion_type,
 232         const struct wined3d_stream_info_element *attrib, DWORD *stride_this_run)
 233 {
 234     DWORD attrib_size;
 235     BOOL ret = FALSE;
 236     unsigned int i;
 237     DWORD offset = This->resource.device->stateBlock->streamOffset[attrib->stream_idx];
 238     DWORD_PTR data;
 239
 240     /* Check for some valid situations which cause us pain. One is if the buffer is used for
 241      * constant attributes(stride = 0), the other one is if the buffer is used on two streams
 242      * with different strides. In the 2nd case we might have to drop conversion entirely,
 243      * it is possible that the same bytes are once read as FLOAT2 and once as UBYTE4N.
 244      */
 245     if (!attrib->stride)
 246     {
 247         FIXME("%s used with stride 0, let's hope we get the vertex stride from somewhere else\n",
 248                 debug_d3dformat(attrib->format_desc->format));
 249     }
 250     else if(attrib->stride != *stride_this_run && *stride_this_run)
 251     {
 252         FIXME("Got two concurrent strides, %d and %d\n", attrib->stride, *stride_this_run);
 253     }
 254     else
 255     {
 256         *stride_this_run = attrib->stride;
 257         if (This->stride != *stride_this_run)
 258         {
 259             /* We rely that this happens only on the first converted attribute that is found,
 260              * if at all. See above check
 261              */
 262             TRACE("Reconverting because converted attributes occur, and the stride changed\n");
 263             This->stride = *stride_this_run;
 264             HeapFree(GetProcessHeap(), HEAP_ZERO_MEMORY, This->conversion_map);
 265             This->conversion_map = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
 266                     sizeof(*This->conversion_map) * This->stride);
 267             ret = TRUE;
 268         }
 269     }
 270
 271     data = (((DWORD_PTR)attrib->data) + offset) % This->stride;
 272     attrib_size = attrib->format_desc->component_count * attrib->format_desc->component_size;
 273     for (i = 0; i < attrib_size; ++i)
 274     {
 275         DWORD_PTR idx = (data + i) % This->stride;
 276         if (This->conversion_map[idx] != conversion_type)
 277         {
 278             TRACE("Byte %ld in vertex changed\n", idx);
 279             TRACE("It was type %d, is %d now\n", This->conversion_map[idx], conversion_type);
 280             ret = TRUE;
 281             This->conversion_map[idx] = conversion_type;
 282         }
 283     }
 284
 285     return ret;
 286 }
 287
 288 static BOOL buffer_check_attribute(struct wined3d_buffer *This, const struct wined3d_stream_info *si,
 289         UINT attrib_idx, const BOOL check_d3dcolor, const BOOL is_ffp_position, const BOOL is_ffp_color,
 290         DWORD *stride_this_run, BOOL *float16_used)
 291 {
 292     const struct wined3d_stream_info_element *attrib = &si->elements[attrib_idx];
 293     IWineD3DDeviceImpl *device = This->resource.device;
 294     const struct wined3d_gl_info *gl_info = &device->adapter->gl_info;
 295     enum wined3d_format_id format;
 296     BOOL ret = FALSE;
 297
 298     /* Ignore attributes that do not have our vbo. After that check we can be sure that the attribute is
 299      * there, on nonexistent attribs the vbo is 0.
 300      */
 301     if (!(si->use_map & (1 << attrib_idx))
 302             || attrib->buffer_object != This->buffer_object)
 303         return FALSE;
 304
 305     format = attrib->format_desc->format;
 306     /* Look for newly appeared conversion */
 307     if (!gl_info->supported[ARB_HALF_FLOAT_VERTEX]
 308             && (format == WINED3DFMT_R16G16_FLOAT || format == WINED3DFMT_R16G16B16A16_FLOAT))
 309     {
 310         ret = buffer_process_converted_attribute(This, CONV_FLOAT16_2, attrib, stride_this_run);
 311
 312         if (is_ffp_position) FIXME("Test FLOAT16 fixed function processing positions\n");
 313         else if (is_ffp_color) FIXME("test FLOAT16 fixed function processing colors\n");
 314         *float16_used = TRUE;
 315     }
 316     else if (check_d3dcolor && format == WINED3DFMT_B8G8R8A8_UNORM)
 317     {
 318         ret = buffer_process_converted_attribute(This, CONV_D3DCOLOR, attrib, stride_this_run);
 319
 320         if (!is_ffp_color) FIXME("Test for non-color fixed function WINED3DFMT_B8G8R8A8_UNORM format\n");
 321     }
 322     else if (is_ffp_position && format == WINED3DFMT_R32G32B32A32_FLOAT)
 323     {
 324         ret = buffer_process_converted_attribute(This, CONV_POSITIONT, attrib, stride_this_run);
 325     }
 326     else if (This->conversion_map)
 327     {
 328         ret = buffer_process_converted_attribute(This, CONV_NONE, attrib, stride_this_run);
 329     }
 330
 331     return ret;
 332 }
 333
 334 static UINT *find_conversion_shift(struct wined3d_buffer *This,
 335         const struct wined3d_stream_info *strided, UINT stride)
 336 {
 337     UINT *ret, i, j, shift, orig_type_size;
 338
 339     if (!stride)
 340     {
 341         TRACE("No shift\n");
 342         return NULL;
 343     }
 344
 345     This->conversion_stride = stride;
 346     ret = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(DWORD) * stride);
 347     for (i = 0; i < MAX_ATTRIBS; ++i)
 348     {
 349         enum wined3d_format_id format;
 350
 351         if (!(strided->use_map & (1 << i)) || strided->elements[i].buffer_object != This->buffer_object) continue;
 352
 353         format = strided->elements[i].format_desc->format;
 354         if (format == WINED3DFMT_R16G16_FLOAT)
 355         {
 356             shift = 4;
 357         }
 358         else if (format == WINED3DFMT_R16G16B16A16_FLOAT)
 359         {
 360             shift = 8;
 361             /* Pre-shift the last 4 bytes in the FLOAT16_4 by 4 bytes - this makes FLOAT16_2 and FLOAT16_4 conversions
 362              * compatible
 363              */
 364             for (j = 4; j < 8; ++j)
 365             {
 366                 ret[(DWORD_PTR)strided->elements[i].data + j] += 4;
 367             }
 368         }
 369         else
 370         {
 371             shift = 0;
 372         }
 373         This->conversion_stride += shift;
 374
 375         if (shift)
 376         {
 377             orig_type_size = strided->elements[i].format_desc->component_count
 378                     * strided->elements[i].format_desc->component_size;
 379             for (j = (DWORD_PTR)strided->elements[i].data + orig_type_size; j < stride; ++j)
 380             {
 381                 ret[j] += shift;
 382             }
 383         }
 384     }
 385
 386     if (TRACE_ON(d3d))
 387     {
 388         TRACE("Dumping conversion shift:\n");
 389         for (i = 0; i < stride; ++i)
 390         {
 391             TRACE("[%d]", ret[i]);
 392         }
 393         TRACE("\n");
 394     }
 395
 396     return ret;
 397 }
 398
 399 static BOOL buffer_find_decl(struct wined3d_buffer *This)
 400 {
 401     IWineD3DDeviceImpl *device = This->resource.device;
 402     const struct wined3d_gl_info *gl_info = &device->adapter->gl_info;
 403     const struct wined3d_stream_info *si = &device->strided_streams;
 404     UINT stride_this_run = 0;
 405     BOOL float16_used = FALSE;
 406     BOOL ret = FALSE;
 407     unsigned int i;
 408
 409     /* In d3d7 the vertex buffer declaration NEVER changes because it is stored in the d3d7 vertex buffer.
 410      * Once we have our declaration there is no need to look it up again. Index buffers also never need
 411      * conversion, so once the (empty) conversion structure is created don't bother checking again
 412      */
 413     if (This->flags & WINED3D_BUFFER_HASDESC)
 414     {
 415         if(This->resource.usage & WINED3DUSAGE_STATICDECL) return FALSE;
 416     }
 417
 418     TRACE("Finding vertex buffer conversion information\n");
 419     /* Certain declaration types need some fixups before we can pass them to
 420      * opengl. This means D3DCOLOR attributes with fixed function vertex
 421      * processing, FLOAT4 POSITIONT with fixed function, and FLOAT16 if
 422      * GL_ARB_half_float_vertex is not supported.
 423      *
 424      * Note for d3d8 and d3d9:
 425      * The vertex buffer FVF doesn't help with finding them, we have to use
 426      * the decoded vertex declaration and pick the things that concern the
 427      * current buffer. A problem with this is that this can change between
 428      * draws, so we have to validate the information and reprocess the buffer
 429      * if it changes, and avoid false positives for performance reasons.
 430      * WineD3D doesn't even know the vertex buffer any more, it is managed
 431      * by the client libraries and passed to SetStreamSource and ProcessVertices
 432      * as needed.
 433      *
 434      * We have to distinguish between vertex shaders and fixed function to
 435      * pick the way we access the strided vertex information.
 436      *
 437      * This code sets up a per-byte array with the size of the detected
 438      * stride of the arrays in the buffer. For each byte we have a field
 439      * that marks the conversion needed on this byte. For example, the
 440      * following declaration with fixed function vertex processing:
 441      *
 442      *      POSITIONT, FLOAT4
 443      *      NORMAL, FLOAT3
 444      *      DIFFUSE, FLOAT16_4
 445      *      SPECULAR, D3DCOLOR
 446      *
 447      * Will result in
 448      * {                 POSITIONT                    }{             NORMAL                }{    DIFFUSE          }{SPECULAR }
 449      * [P][P][P][P][P][P][P][P][P][P][P][P][P][P][P][P][0][0][0][0][0][0][0][0][0][0][0][0][F][F][F][F][F][F][F][F][C][C][C][C]
 450      *
 451      * Where in this example map P means 4 component position conversion, 0
 452      * means no conversion, F means FLOAT16_2 conversion and C means D3DCOLOR
 453      * conversion (red / blue swizzle).
 454      *
 455      * If we're doing conversion and the stride changes we have to reconvert
 456      * the whole buffer. Note that we do not mind if the semantic changes,
 457      * we only care for the conversion type. So if the NORMAL is replaced
 458      * with a TEXCOORD, nothing has to be done, or if the DIFFUSE is replaced
 459      * with a D3DCOLOR BLENDWEIGHT we can happily dismiss the change. Some
 460      * conversion types depend on the semantic as well, for example a FLOAT4
 461      * texcoord needs no conversion while a FLOAT4 positiont needs one
 462      */
 463     if (use_vs(device->stateBlock))
 464     {
 465         TRACE("vshader\n");
 466         /* If the current vertex declaration is marked for no half float conversion don't bother to
 467          * analyse the strided streams in depth, just set them up for no conversion. Return decl changed
 468          * if we used conversion before
 469          */
 470         if (!((IWineD3DVertexDeclarationImpl *) device->stateBlock->vertexDecl)->half_float_conv_needed)
 471         {
 472             if (This->conversion_map)
 473             {
 474                 TRACE("Now using shaders without conversion, but conversion used before\n");
 475                 HeapFree(GetProcessHeap(), 0, This->conversion_map);
 476                 HeapFree(GetProcessHeap(), 0, This->conversion_shift);
 477                 This->conversion_map = NULL;
 478                 This->stride = 0;
 479                 This->conversion_shift = NULL;
 480                 This->conversion_stride = 0;
 481                 return TRUE;
 482             }
 483             else
 484             {
 485                 return FALSE;
 486             }
 487         }
 488         for (i = 0; i < MAX_ATTRIBS; ++i)
 489         {
 490             ret = buffer_check_attribute(This, si, i, FALSE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 491         }
 492
 493         /* Recalculate the conversion shift map if the declaration has changed,
 494          * and we're using float16 conversion or used it on the last run
 495          */
 496         if (ret && (float16_used || This->conversion_map))
 497         {
 498             HeapFree(GetProcessHeap(), 0, This->conversion_shift);
 499             This->conversion_shift = find_conversion_shift(This, si, This->stride);
 500         }
 501     }
 502     else
 503     {
 504         /* Fixed function is a bit trickier. We have to take care for D3DCOLOR types, FLOAT4 positions and of course
 505          * FLOAT16s if not supported. Also, we can't iterate over the array, so use macros to generate code for all
 506          * the attributes that our current fixed function pipeline implementation cares for.
 507          */
 508         BOOL support_d3dcolor = gl_info->supported[ARB_VERTEX_ARRAY_BGRA];
 509         ret = buffer_check_attribute(This, si, WINED3D_FFP_POSITION,
 510                 TRUE, TRUE,  FALSE, &stride_this_run, &float16_used) || ret;
 511         ret = buffer_check_attribute(This, si, WINED3D_FFP_NORMAL,
 512                 TRUE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 513         ret = buffer_check_attribute(This, si, WINED3D_FFP_DIFFUSE,
 514                 !support_d3dcolor, FALSE, TRUE,  &stride_this_run, &float16_used) || ret;
 515         ret = buffer_check_attribute(This, si, WINED3D_FFP_SPECULAR,
 516                 !support_d3dcolor, FALSE, TRUE,  &stride_this_run, &float16_used) || ret;
 517         ret = buffer_check_attribute(This, si, WINED3D_FFP_TEXCOORD0,
 518                 TRUE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 519         ret = buffer_check_attribute(This, si, WINED3D_FFP_TEXCOORD1,
 520                 TRUE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 521         ret = buffer_check_attribute(This, si, WINED3D_FFP_TEXCOORD2,
 522                 TRUE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 523         ret = buffer_check_attribute(This, si, WINED3D_FFP_TEXCOORD3,
 524                 TRUE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 525         ret = buffer_check_attribute(This, si, WINED3D_FFP_TEXCOORD4,
 526                 TRUE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 527         ret = buffer_check_attribute(This, si, WINED3D_FFP_TEXCOORD5,
 528                 TRUE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 529         ret = buffer_check_attribute(This, si, WINED3D_FFP_TEXCOORD6,
 530                 TRUE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 531         ret = buffer_check_attribute(This, si, WINED3D_FFP_TEXCOORD7,
 532                 TRUE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 533
 534         if (float16_used) FIXME("Float16 conversion used with fixed function vertex processing\n");
 535     }
 536
 537     if (stride_this_run == 0 && This->conversion_map)
 538     {
 539         /* Sanity test */
 540         if (!ret) ERR("no converted attributes found, old conversion map exists, and no declaration change?\n");
 541         HeapFree(GetProcessHeap(), 0, This->conversion_map);
 542         This->conversion_map = NULL;
 543         This->stride = 0;
 544     }
 545
 546     if (ret) TRACE("Conversion information changed\n");
 547
 548     return ret;
 549 }
 550
 551 /* Context activation is done by the caller. */
 552 static void buffer_check_buffer_object_size(struct wined3d_buffer *This, const struct wined3d_gl_info *gl_info)
 553 {
 554     UINT size = This->conversion_stride ?
 555             This->conversion_stride * (This->resource.size / This->stride) : This->resource.size;
 556     if (This->buffer_object_size != size)
 557     {
 558         TRACE("Old size %u, creating new size %u\n", This->buffer_object_size, size);
 559
 560         if(This->buffer_type_hint == GL_ELEMENT_ARRAY_BUFFER_ARB)
 561         {
 562             IWineD3DDeviceImpl_MarkStateDirty(This->resource.device, STATE_INDEXBUFFER);
 563         }
 564
 565         /* Rescue the data before resizing the buffer object if we do not have our backup copy */
 566         if(!(This->flags & WINED3D_BUFFER_DOUBLEBUFFER))
 567         {
 568             buffer_get_sysmem(This, gl_info);
 569         }
 570
 571         ENTER_GL();
 572         GL_EXTCALL(glBindBufferARB(This->buffer_type_hint, This->buffer_object));
 573         checkGLcall("glBindBufferARB");
 574         GL_EXTCALL(glBufferDataARB(This->buffer_type_hint, size, NULL, This->buffer_object_usage));
 575         This->buffer_object_size = size;
 576         checkGLcall("glBufferDataARB");
 577         LEAVE_GL();
 578     }
 579 }
 580
 581 static inline void fixup_d3dcolor(DWORD *dst_color)
 582 {
 583     DWORD src_color = *dst_color;
 584
 585     /* Color conversion like in drawStridedSlow. watch out for little endianity
 586      * If we want that stuff to work on big endian machines too we have to consider more things
 587      *
 588      * 0xff000000: Alpha mask
 589      * 0x00ff0000: Blue mask
 590      * 0x0000ff00: Green mask
 591      * 0x000000ff: Red mask
 592      */
 593     *dst_color = 0;
 594     *dst_color |= (src_color & 0xff00ff00);         /* Alpha Green */
 595     *dst_color |= (src_color & 0x00ff0000) >> 16;   /* Red */
 596     *dst_color |= (src_color & 0x000000ff) << 16;   /* Blue */
 597 }
 598
 599 static inline void fixup_transformed_pos(float *p)
 600 {
 601     /* rhw conversion like in position_float4(). */
 602     if (p[3] != 1.0f && p[3] != 0.0f)
 603     {
 604         float w = 1.0f / p[3];
 605         p[0] *= w;
 606         p[1] *= w;
 607         p[2] *= w;
 608         p[3] = w;
 609     }
 610 }
 611
 612 /* Context activation is done by the caller. */
 613 const BYTE *buffer_get_memory(IWineD3DBuffer *iface, const struct wined3d_gl_info *gl_info, GLuint *buffer_object)
 614 {
 615     struct wined3d_buffer *This = (struct wined3d_buffer *)iface;
 616
 617     *buffer_object = This->buffer_object;
 618     if (!This->buffer_object)
 619     {
 620         if (This->flags & WINED3D_BUFFER_CREATEBO)
 621         {
 622             buffer_create_buffer_object(This, gl_info);
 623             This->flags &= ~WINED3D_BUFFER_CREATEBO;
 624             if (This->buffer_object)
 625             {
 626                 *buffer_object = This->buffer_object;
 627                 return NULL;
 628             }
 629         }
 630         return This->resource.allocatedMemory;
 631     }
 632     else
 633     {
 634         return NULL;
 635     }
 636 }
 637
 638 /* IUnknown methods */
 639
 640 static HRESULT STDMETHODCALLTYPE buffer_QueryInterface(IWineD3DBuffer *iface,
 641         REFIID riid, void **object)
 642 {
 643     TRACE("iface %p, riid %s, object %p\n", iface, debugstr_guid(riid), object);
 644
 645     if (IsEqualGUID(riid, &IID_IWineD3DBuffer)
 646             || IsEqualGUID(riid, &IID_IWineD3DResource)
 647             || IsEqualGUID(riid, &IID_IWineD3DBase)
 648             || IsEqualGUID(riid, &IID_IUnknown))
 649     {
 650         IUnknown_AddRef(iface);
 651         *object = iface;
 652         return S_OK;
 653     }
 654
 655     WARN("%s not implemented, returning E_NOINTERFACE\n", debugstr_guid(riid));
 656
 657     *object = NULL;
 658
 659     return E_NOINTERFACE;
 660 }
 661
 662 static ULONG STDMETHODCALLTYPE buffer_AddRef(IWineD3DBuffer *iface)
 663 {
 664     struct wined3d_buffer *This = (struct wined3d_buffer *)iface;
 665     ULONG refcount = InterlockedIncrement(&This->resource.ref);
 666
 667     TRACE("%p increasing refcount to %u\n", This, refcount);
 668
 669     return refcount;
 670 }
 671
 672 /* Context activation is done by the caller. */
 673 BYTE *buffer_get_sysmem(struct wined3d_buffer *This, const struct wined3d_gl_info *gl_info)
 674 {
 675     /* AllocatedMemory exists if the buffer is double buffered or has no buffer object at all */
 676     if(This->resource.allocatedMemory) return This->resource.allocatedMemory;
 677
 678     This->resource.heapMemory = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, This->resource.size + RESOURCE_ALIGNMENT);
 679     This->resource.allocatedMemory = (BYTE *)(((ULONG_PTR)This->resource.heapMemory + (RESOURCE_ALIGNMENT - 1)) & ~(RESOURCE_ALIGNMENT - 1));
 680     ENTER_GL();
 681     GL_EXTCALL(glBindBufferARB(This->buffer_type_hint, This->buffer_object));
 682     GL_EXTCALL(glGetBufferSubDataARB(This->buffer_type_hint, 0, This->resource.size, This->resource.allocatedMemory));
 683     LEAVE_GL();
 684     This->flags |= WINED3D_BUFFER_DOUBLEBUFFER;
 685
 686     return This->resource.allocatedMemory;
 687 }
 688
 689 static void STDMETHODCALLTYPE buffer_UnLoad(IWineD3DBuffer *iface)
 690 {
 691     struct wined3d_buffer *This = (struct wined3d_buffer *)iface;
 692
 693     TRACE("iface %p\n", iface);
 694
 695     if (This->buffer_object)
 696     {
 697         IWineD3DDeviceImpl *device = This->resource.device;
 698         struct wined3d_context *context;
 699
 700         context = context_acquire(device, NULL);
 701
 702         /* Download the buffer, but don't permanently enable double buffering */
 703         if(!(This->flags & WINED3D_BUFFER_DOUBLEBUFFER))
 704         {
 705             buffer_get_sysmem(This, context->gl_info);
 706             This->flags &= ~WINED3D_BUFFER_DOUBLEBUFFER;
 707         }
 708
 709         delete_gl_buffer(This, context->gl_info);
 710         This->flags |= WINED3D_BUFFER_CREATEBO; /* Recreate the buffer object next load */
 711         buffer_clear_dirty_areas(This);
 712
 713         context_release(context);
 714
 715         HeapFree(GetProcessHeap(), 0, This->conversion_shift);
 716         This->conversion_shift = NULL;
 717         HeapFree(GetProcessHeap(), 0, This->conversion_map);
 718         This->conversion_map = NULL;
 719         This->stride = 0;
 720         This->conversion_stride = 0;
 721         This->flags &= ~WINED3D_BUFFER_HASDESC;
 722     }
 723
 724     resource_unload((IWineD3DResourceImpl *)This);
 725 }
 726
 727 static ULONG STDMETHODCALLTYPE buffer_Release(IWineD3DBuffer *iface)
 728 {
 729     struct wined3d_buffer *This = (struct wined3d_buffer *)iface;
 730     ULONG refcount = InterlockedDecrement(&This->resource.ref);
 731
 732     TRACE("%p decreasing refcount to %u\n", This, refcount);
 733
 734     if (!refcount)
 735     {
 736         buffer_UnLoad(iface);
 737         resource_cleanup((IWineD3DResource *)iface);
 738         This->resource.parent_ops->wined3d_object_destroyed(This->resource.parent);
 739         HeapFree(GetProcessHeap(), 0, This->maps);
 740         HeapFree(GetProcessHeap(), 0, This);
 741     }
 742
 743     return refcount;
 744 }
 745
 746 /* IWineD3DBase methods */
 747
 748 static HRESULT STDMETHODCALLTYPE buffer_GetParent(IWineD3DBuffer *iface, IUnknown **parent)
 749 {
 750     return resource_get_parent((IWineD3DResource *)iface, parent);
 751 }
 752
 753 /* IWineD3DResource methods */
 754
 755 static HRESULT STDMETHODCALLTYPE buffer_SetPrivateData(IWineD3DBuffer *iface,
 756         REFGUID guid, const void *data, DWORD data_size, DWORD flags)
 757 {
 758     return resource_set_private_data((IWineD3DResource *)iface, guid, data, data_size, flags);
 759 }
 760
 761 static HRESULT STDMETHODCALLTYPE buffer_GetPrivateData(IWineD3DBuffer *iface,
 762         REFGUID guid, void *data, DWORD *data_size)
 763 {
 764     return resource_get_private_data((IWineD3DResource *)iface, guid, data, data_size);
 765 }
 766
 767 static HRESULT STDMETHODCALLTYPE buffer_FreePrivateData(IWineD3DBuffer *iface, REFGUID guid)
 768 {
 769     return resource_free_private_data((IWineD3DResource *)iface, guid);
 770 }
 771
 772 static DWORD STDMETHODCALLTYPE buffer_SetPriority(IWineD3DBuffer *iface, DWORD priority)
 773 {
 774     return resource_set_priority((IWineD3DResource *)iface, priority);
 775 }
 776
 777 static DWORD STDMETHODCALLTYPE buffer_GetPriority(IWineD3DBuffer *iface)
 778 {
 779     return resource_get_priority((IWineD3DResource *)iface);
 780 }
 781
 782 /* The caller provides a context and binds the buffer */
 783 static void buffer_sync_apple(struct wined3d_buffer *This, DWORD flags, const struct wined3d_gl_info *gl_info)
 784 {
 785     enum wined3d_event_query_result ret;
 786
 787     /* No fencing needs to be done if the app promises not to overwrite
 788      * existing data */
 789     if(flags & WINED3DLOCK_NOOVERWRITE) return;
 790     if(flags & WINED3DLOCK_DISCARD)
 791     {
 792         ENTER_GL();
 793         GL_EXTCALL(glBufferDataARB(This->buffer_type_hint, This->resource.size, NULL, This->buffer_object_usage));
 794         checkGLcall("glBufferDataARB\n");
 795         LEAVE_GL();
 796         return;
 797     }
 798
 799     if(!This->query)
 800     {
 801         TRACE("Creating event query for buffer %p\n", This);
 802
 803         if (!wined3d_event_query_supported(gl_info))
 804         {
 805             FIXME("Event queries not supported, dropping async buffer locks.\n");
 806             goto drop_query;
 807         }
 808
 809         This->query = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*This->query));
 810         if (!This->query)
 811         {
 812             ERR("Failed to allocate event query memory, dropping async buffer locks.\n");
 813             goto drop_query;
 814         }
 815
 816         /* Since we don't know about old draws a glFinish is needed once */
 817         wglFinish();
 818         return;
 819     }
 820     TRACE("Synchronizing buffer %p\n", This);
 821     ret = wined3d_event_query_finish(This->query, This->resource.device);
 822     switch(ret)
 823     {
 824         case WINED3D_EVENT_QUERY_NOT_STARTED:
 825         case WINED3D_EVENT_QUERY_OK:
 826             /* All done */
 827             return;
 828
 829         case WINED3D_EVENT_QUERY_WRONG_THREAD:
 830             WARN("Cannot synchronize buffer lock due to a thread conflict\n");
 831             goto drop_query;
 832
 833         default:
 834             ERR("wined3d_event_query_finish returned %u, dropping async buffer locks\n", ret);
 835             goto drop_query;
 836     }
 837
 838 drop_query:
 839     if(This->query)
 840     {
 841         wined3d_event_query_destroy(This->query);
 842         This->query = NULL;
 843     }
 844
 845     wglFinish();
 846     ENTER_GL();
 847     GL_EXTCALL(glBufferParameteriAPPLE(This->buffer_type_hint, GL_BUFFER_SERIALIZED_MODIFY_APPLE, GL_TRUE));
 848     checkGLcall("glBufferParameteriAPPLE(This->buffer_type_hint, GL_BUFFER_SERIALIZED_MODIFY_APPLE, GL_TRUE)");
 849     LEAVE_GL();
 850     This->flags &= ~WINED3D_BUFFER_APPLESYNC;
 851 }
 852
 853 /* The caller provides a GL context */
 854 static void buffer_direct_upload(struct wined3d_buffer *This, const struct wined3d_gl_info *gl_info, DWORD flags)
 855 {
 856         BYTE *map;
 857         UINT start = 0, len = 0;
 858
 859         ENTER_GL();
 860         GL_EXTCALL(glBindBufferARB(This->buffer_type_hint, This->buffer_object));
 861         checkGLcall("glBindBufferARB");
 862         if (gl_info->supported[ARB_MAP_BUFFER_RANGE])
 863         {
 864             GLbitfield mapflags;
 865             mapflags = GL_MAP_WRITE_BIT | GL_MAP_FLUSH_EXPLICIT_BIT;
 866             if (flags & WINED3D_BUFFER_DISCARD)
 867             {
 868                 mapflags |= GL_MAP_UNSYNCHRONIZED_BIT | GL_MAP_INVALIDATE_BUFFER_BIT;
 869             }
 870             else if (flags & WINED3D_BUFFER_NOSYNC)
 871             {
 872                 mapflags |= GL_MAP_UNSYNCHRONIZED_BIT;
 873             }
 874             map = GL_EXTCALL(glMapBufferRange(This->buffer_type_hint, 0,
 875                                               This->resource.size, mapflags));
 876             checkGLcall("glMapBufferRange");
 877         }
 878         else
 879         {
 880             if (This->flags & WINED3D_BUFFER_APPLESYNC)
 881             {
 882                 DWORD syncflags = 0;
 883                 if (flags & WINED3D_BUFFER_DISCARD) syncflags |= WINED3DLOCK_DISCARD;
 884                 if (flags & WINED3D_BUFFER_NOSYNC) syncflags |= WINED3DLOCK_NOOVERWRITE;
 885                 LEAVE_GL();
 886                 buffer_sync_apple(This, syncflags, gl_info);
 887                 ENTER_GL();
 888             }
 889             map = GL_EXTCALL(glMapBufferARB(This->buffer_type_hint, GL_WRITE_ONLY_ARB));
 890             checkGLcall("glMapBufferARB");
 891         }
 892         if (!map)
 893         {
 894             LEAVE_GL();
 895             ERR("Failed to map opengl buffer\n");
 896             return;
 897         }
 898
 899         while(This->modified_areas)
 900         {
 901             This->modified_areas--;
 902             start = This->maps[This->modified_areas].offset;
 903             len = This->maps[This->modified_areas].size;
 904
 905             memcpy(map + start, This->resource.allocatedMemory + start, len);
 906
 907             if (gl_info->supported[ARB_MAP_BUFFER_RANGE])
 908             {
 909                 GL_EXTCALL(glFlushMappedBufferRange(This->buffer_type_hint, start, len));
 910                 checkGLcall("glFlushMappedBufferRange");
 911             }
 912             else if (This->flags & WINED3D_BUFFER_FLUSH)
 913             {
 914                 GL_EXTCALL(glFlushMappedBufferRangeAPPLE(This->buffer_type_hint, start, len));
 915                 checkGLcall("glFlushMappedBufferRangeAPPLE");
 916             }
 917         }
 918         GL_EXTCALL(glUnmapBufferARB(This->buffer_type_hint));
 919         checkGLcall("glUnmapBufferARB");
 920         LEAVE_GL();
 921 }
 922
 923 static void STDMETHODCALLTYPE buffer_PreLoad(IWineD3DBuffer *iface)
 924 {
 925     struct wined3d_buffer *This = (struct wined3d_buffer *)iface;
 926     IWineD3DDeviceImpl *device = This->resource.device;
 927     UINT start = 0, end = 0, len = 0, vertices;
 928     const struct wined3d_gl_info *gl_info;
 929     struct wined3d_context *context;
 930     BOOL decl_changed = FALSE;
 931     unsigned int i, j;
 932     BYTE *data;
 933     DWORD flags = This->flags & (WINED3D_BUFFER_NOSYNC | WINED3D_BUFFER_DISCARD);
 934
 935     TRACE("iface %p\n", iface);
 936     This->flags &= ~(WINED3D_BUFFER_NOSYNC | WINED3D_BUFFER_DISCARD);
 937
 938     context = context_acquire(device, NULL);
 939     gl_info = context->gl_info;
 940
 941     if (!This->buffer_object)
 942     {
 943         /* TODO: Make converting independent from VBOs */
 944         if (This->flags & WINED3D_BUFFER_CREATEBO)
 945         {
 946             buffer_create_buffer_object(This, gl_info);
 947             This->flags &= ~WINED3D_BUFFER_CREATEBO;
 948         }
 949         else
 950         {
 951             /* Not doing any conversion */
 952             goto end;
 953         }
 954     }
 955
 956     /* Reading the declaration makes only sense if the stateblock is finalized and the buffer bound to a stream */
 957     if (device->isInDraw && This->bind_count > 0)
 958     {
 959         decl_changed = buffer_find_decl(This);
 960         This->flags |= WINED3D_BUFFER_HASDESC;
 961     }
 962
 963     if (!decl_changed && !(This->flags & WINED3D_BUFFER_HASDESC && buffer_is_dirty(This)))
 964     {
 965         context_release(context);
 966         ++This->draw_count;
 967         if (This->draw_count > VB_RESETDECLCHANGE) This->decl_change_count = 0;
 968         if (This->draw_count > VB_RESETFULLCONVS) This->full_conversion_count = 0;
 969         return;
 970     }
 971
 972     /* If applications change the declaration over and over, reconverting all the time is a huge
 973      * performance hit. So count the declaration changes and release the VBO if there are too many
 974      * of them (and thus stop converting)
 975      */
 976     if (decl_changed)
 977     {
 978         ++This->decl_change_count;
 979         This->draw_count = 0;
 980
 981         if (This->decl_change_count > VB_MAXDECLCHANGES ||
 982             (This->conversion_map && (This->resource.usage & WINED3DUSAGE_DYNAMIC)))
 983         {
 984             FIXME("Too many declaration changes or converting dynamic buffer, stopping converting\n");
 985
 986             IWineD3DBuffer_UnLoad(iface);
 987             This->flags &= ~WINED3D_BUFFER_CREATEBO;
 988
 989             /* The stream source state handler might have read the memory of the vertex buffer already
 990              * and got the memory in the vbo which is not valid any longer. Dirtify the stream source
 991              * to force a reload. This happens only once per changed vertexbuffer and should occur rather
 992              * rarely
 993              */
 994             IWineD3DDeviceImpl_MarkStateDirty(device, STATE_STREAMSRC);
 995             goto end;
 996         }
 997         buffer_check_buffer_object_size(This, gl_info);
 998
 999         /* The declaration changed, reload the whole buffer */
1000         WARN("Reloading buffer because of decl change\n");
1001         buffer_clear_dirty_areas(This);
1002         if(!buffer_add_dirty_area(This, 0, 0))
1003         {
1004             ERR("buffer_add_dirty_area failed, this is not expected\n");
1005             goto end;
1006         }
1007         /* Avoid unfenced updates, we might overwrite more areas of the buffer than the application
1008          * cleared for unsynchronized updates
1009          */
1010         flags = 0;
1011     }
1012     else
1013     {
1014         /* However, it is perfectly fine to change the declaration every now and then. We don't want a game that
1015          * changes it every minute drop the VBO after VB_MAX_DECL_CHANGES minutes. So count draws without
1016          * decl changes and reset the decl change count after a specific number of them
1017          */
1018         if(buffer_is_fully_dirty(This))
1019         {
1020             ++This->full_conversion_count;
1021             if(This->full_conversion_count > VB_MAXFULLCONVERSIONS)
1022             {
1023                 FIXME("Too many full buffer conversions, stopping converting\n");
1024                 IWineD3DBuffer_UnLoad(iface);
1025                 This->flags &= ~WINED3D_BUFFER_CREATEBO;
1026                 IWineD3DDeviceImpl_MarkStateDirty(device, STATE_STREAMSRC);
1027                 goto end;
1028             }
1029         }
1030         else
1031         {
1032             ++This->draw_count;
1033             if (This->draw_count > VB_RESETDECLCHANGE) This->decl_change_count = 0;
1034             if (This->draw_count > VB_RESETFULLCONVS) This->full_conversion_count = 0;
1035         }
1036     }
1037
1038     if(This->buffer_type_hint == GL_ELEMENT_ARRAY_BUFFER_ARB)
1039     {
1040         IWineD3DDeviceImpl_MarkStateDirty(This->resource.device, STATE_INDEXBUFFER);
1041     }
1042
1043     if (!This->conversion_map)
1044     {
1045         /* That means that there is nothing to fixup. Just upload from This->resource.allocatedMemory
1046          * directly into the vbo. Do not free the system memory copy because drawPrimitive may need it if
1047          * the stride is 0, for instancing emulation, vertex blending emulation or shader emulation.
1048          */
1049         TRACE("No conversion needed\n");
1050
1051         /* Nothing to do because we locked directly into the vbo */
1052         if (!(This->flags & WINED3D_BUFFER_DOUBLEBUFFER))
1053         {
1054             context_release(context);
1055             return;
1056         }
1057
1058         buffer_direct_upload(This, context->gl_info, flags);
1059
1060         context_release(context);
1061         return;
1062     }
1063
1064     if(!(This->flags & WINED3D_BUFFER_DOUBLEBUFFER))
1065     {
1066         buffer_get_sysmem(This, gl_info);
1067     }
1068
1069     /* Now for each vertex in the buffer that needs conversion */
1070     vertices = This->resource.size / This->stride;
1071
1072     if (This->conversion_shift)
1073     {
1074         TRACE("Shifted conversion\n");
1075         data = HeapAlloc(GetProcessHeap(), 0, vertices * This->conversion_stride);
1076
1077         start = 0;
1078         len = This->resource.size;
1079         end = start + len;
1080
1081         if (This->maps[0].offset || This->maps[0].size != This->resource.size)
1082         {
1083             FIXME("Implement partial buffer load with shifted conversion\n");
1084         }
1085
1086         for (i = start / This->stride; i < min((end / This->stride) + 1, vertices); ++i)
1087         {
1088             for (j = 0; j < This->stride; ++j)
1089             {
1090                 switch(This->conversion_map[j])
1091                 {
1092                     case CONV_NONE:
1093                         data[This->conversion_stride * i + j + This->conversion_shift[j]]
1094                                 = This->resource.allocatedMemory[This->stride * i + j];
1095                         break;
1096
1097                     case CONV_FLOAT16_2:
1098                     {
1099                         float *out = (float *)(&data[This->conversion_stride * i + j + This->conversion_shift[j]]);
1100                         const WORD *in = (WORD *)(&This->resource.allocatedMemory[i * This->stride + j]);
1101
1102                         out[1] = float_16_to_32(in + 1);
1103                         out[0] = float_16_to_32(in + 0);
1104                         j += 3;    /* Skip 3 additional bytes,as a FLOAT16_2 has 4 bytes */
1105                         break;
1106                     }
1107
1108                     default:
1109                         FIXME("Unimplemented conversion %d in shifted conversion\n", This->conversion_map[j]);
1110                         break;
1111                 }
1112             }
1113         }
1114
1115         ENTER_GL();
1116         GL_EXTCALL(glBindBufferARB(This->buffer_type_hint, This->buffer_object));
1117         checkGLcall("glBindBufferARB");
1118         GL_EXTCALL(glBufferSubDataARB(This->buffer_type_hint, 0, vertices * This->conversion_stride, data));
1119         checkGLcall("glBufferSubDataARB");
1120         LEAVE_GL();
1121     }
1122     else
1123     {
1124         data = HeapAlloc(GetProcessHeap(), 0, This->resource.size);
1125
1126         while(This->modified_areas)
1127         {
1128             This->modified_areas--;
1129             start = This->maps[This->modified_areas].offset;
1130             len = This->maps[This->modified_areas].size;
1131             end = start + len;
1132
1133             memcpy(data + start, This->resource.allocatedMemory + start, end - start);
1134             for (i = start / This->stride; i < min((end / This->stride) + 1, vertices); ++i)
1135             {
1136                 for (j = 0; j < This->stride; ++j)
1137                 {
1138                     switch(This->conversion_map[j])
1139                     {
1140                         case CONV_NONE:
1141                             /* Done already */
1142                             j += 3;
1143                             break;
1144                         case CONV_D3DCOLOR:
1145                             fixup_d3dcolor((DWORD *) (data + i * This->stride + j));
1146                             j += 3;
1147                             break;
1148
1149                         case CONV_POSITIONT:
1150                             fixup_transformed_pos((float *) (data + i * This->stride + j));
1151                             j += 15;
1152                             break;
1153
1154                         case CONV_FLOAT16_2:
1155                             ERR("Did not expect FLOAT16 conversion in unshifted conversion\n");
1156                         default:
1157                             FIXME("Unimplemented conversion %d in shifted conversion\n", This->conversion_map[j]);
1158                     }
1159                 }
1160             }
1161
1162             ENTER_GL();
1163             GL_EXTCALL(glBindBufferARB(This->buffer_type_hint, This->buffer_object));
1164             checkGLcall("glBindBufferARB");
1165             GL_EXTCALL(glBufferSubDataARB(This->buffer_type_hint, start, len, data + start));
1166             checkGLcall("glBufferSubDataARB");
1167             LEAVE_GL();
1168         }
1169     }
1170
1171     HeapFree(GetProcessHeap(), 0, data);
1172
1173 end:
1174     context_release(context);
1175 }
1176
1177 static WINED3DRESOURCETYPE STDMETHODCALLTYPE buffer_GetType(IWineD3DBuffer *iface)
1178 {
1179     return resource_get_type((IWineD3DResource *)iface);
1180 }
1181
1182 /* IWineD3DBuffer methods */
1183
1184 static DWORD buffer_sanitize_flags(struct wined3d_buffer *buffer, DWORD flags)
1185 {
1186     /* Not all flags make sense together, but Windows never returns an error. Catch the
1187      * cases that could cause issues */
1188     if(flags & WINED3DLOCK_READONLY)
1189     {
1190         if(flags & WINED3DLOCK_DISCARD)
1191         {
1192             WARN("WINED3DLOCK_READONLY combined with WINED3DLOCK_DISCARD, ignoring flags\n");
1193             return 0;
1194         }
1195         if(flags & WINED3DLOCK_NOOVERWRITE)
1196         {
1197             WARN("WINED3DLOCK_READONLY combined with WINED3DLOCK_NOOVERWRITE, ignoring flags\n");
1198             return 0;
1199         }
1200     }
1201     else if((flags & (WINED3DLOCK_DISCARD | WINED3DLOCK_NOOVERWRITE)) == (WINED3DLOCK_DISCARD | WINED3DLOCK_NOOVERWRITE))
1202     {
1203         WARN("WINED3DLOCK_DISCARD and WINED3DLOCK_NOOVERWRITE used together, ignoring\n");
1204         return 0;
1205     }
1206     else if (flags & (WINED3DLOCK_DISCARD | WINED3DLOCK_NOOVERWRITE) && !(buffer->resource.usage & WINED3DUSAGE_DYNAMIC))
1207     {
1208         WARN("DISCARD or NOOVERWRITE lock on non-dynamic buffer, ignoring\n");
1209         return 0;
1210     }
1211
1212     return flags;
1213 }
1214
1215 static GLbitfield buffer_gl_map_flags(DWORD d3d_flags)
1216 {
1217     GLbitfield ret = 0;
1218
1219     if (!(d3d_flags & WINED3DLOCK_READONLY)) ret = GL_MAP_WRITE_BIT | GL_MAP_FLUSH_EXPLICIT_BIT;
1220
1221     if (d3d_flags & (WINED3DLOCK_DISCARD | WINED3DLOCK_NOOVERWRITE))
1222     {
1223         if(d3d_flags & WINED3DLOCK_DISCARD) ret |= GL_MAP_INVALIDATE_BUFFER_BIT;
1224         ret |= GL_MAP_UNSYNCHRONIZED_BIT;
1225     }
1226     else
1227     {
1228         ret |= GL_MAP_READ_BIT;
1229     }
1230
1231     return ret;
1232 }
1233
1234 static HRESULT STDMETHODCALLTYPE buffer_Map(IWineD3DBuffer *iface, UINT offset, UINT size, BYTE **data, DWORD flags)
1235 {
1236     struct wined3d_buffer *This = (struct wined3d_buffer *)iface;
1237     LONG count;
1238     BOOL dirty = buffer_is_dirty(This);
1239
1240     TRACE("iface %p, offset %u, size %u, data %p, flags %#x\n", iface, offset, size, data, flags);
1241
1242     flags = buffer_sanitize_flags(This, flags);
1243     if (!(flags & WINED3DLOCK_READONLY))
1244     {
1245         if (!buffer_add_dirty_area(This, offset, size)) return E_OUTOFMEMORY;
1246     }
1247
1248     count = InterlockedIncrement(&This->lock_count);
1249
1250     if (This->buffer_object)
1251     {
1252         if(!(This->flags & WINED3D_BUFFER_DOUBLEBUFFER))
1253         {
1254             if(count == 1)
1255             {
1256                 IWineD3DDeviceImpl *device = This->resource.device;
1257                 struct wined3d_context *context;
1258                 const struct wined3d_gl_info *gl_info;
1259
1260                 if(This->buffer_type_hint == GL_ELEMENT_ARRAY_BUFFER_ARB)
1261                 {
1262                     IWineD3DDeviceImpl_MarkStateDirty(This->resource.device, STATE_INDEXBUFFER);
1263                 }
1264
1265                 context = context_acquire(device, NULL);
1266                 gl_info = context->gl_info;
1267                 ENTER_GL();
1268                 GL_EXTCALL(glBindBufferARB(This->buffer_type_hint, This->buffer_object));
1269
1270                 if (gl_info->supported[ARB_MAP_BUFFER_RANGE])
1271                 {
1272                     GLbitfield mapflags = buffer_gl_map_flags(flags);
1273                     This->resource.allocatedMemory = GL_EXTCALL(glMapBufferRange(This->buffer_type_hint, 0,
1274                                                                                 This->resource.size, mapflags));
1275                     checkGLcall("glMapBufferRange");
1276                 }
1277                 else
1278                 {
1279                     if(This->flags & WINED3D_BUFFER_APPLESYNC)
1280                     {
1281                         LEAVE_GL();
1282                         buffer_sync_apple(This, flags, gl_info);
1283                         ENTER_GL();
1284                     }
1285                     This->resource.allocatedMemory = GL_EXTCALL(glMapBufferARB(This->buffer_type_hint, GL_READ_WRITE_ARB));
1286                     checkGLcall("glMapBufferARB");
1287                 }
1288                 LEAVE_GL();
1289
1290                 if (((DWORD_PTR) This->resource.allocatedMemory) & (RESOURCE_ALIGNMENT - 1))
1291                 {
1292                     WARN("Pointer %p is not %u byte aligned, falling back to double buffered operation\n",
1293                         This->resource.allocatedMemory, RESOURCE_ALIGNMENT);
1294
1295                     ENTER_GL();
1296                     GL_EXTCALL(glUnmapBufferARB(This->buffer_type_hint));
1297                     checkGLcall("glUnmapBufferARB");
1298                     LEAVE_GL();
1299                     This->resource.allocatedMemory = NULL;
1300
1301                     buffer_get_sysmem(This, gl_info);
1302                     TRACE("New pointer is %p\n", This->resource.allocatedMemory);
1303                 }
1304                 context_release(context);
1305             }
1306         }
1307         else
1308         {
1309             if (dirty)
1310             {
1311                 if (This->flags & WINED3D_BUFFER_NOSYNC && !(flags & WINED3DLOCK_NOOVERWRITE))
1312                 {
1313                     This->flags &= ~WINED3D_BUFFER_NOSYNC;
1314                 }
1315             }
1316             else if(flags & WINED3DLOCK_NOOVERWRITE)
1317             {
1318                 This->flags |= WINED3D_BUFFER_NOSYNC;
1319             }
1320
1321             if (flags & WINED3DLOCK_DISCARD)
1322             {
1323                 This->flags |= WINED3D_BUFFER_DISCARD;
1324             }
1325         }
1326     }
1327
1328     *data = This->resource.allocatedMemory + offset;
1329
1330     TRACE("Returning memory at %p (base %p, offset %u)\n", *data, This->resource.allocatedMemory, offset);
1331     /* TODO: check Flags compatibility with This->currentDesc.Usage (see MSDN) */
1332
1333     return WINED3D_OK;
1334 }
1335
1336 static HRESULT STDMETHODCALLTYPE buffer_Unmap(IWineD3DBuffer *iface)
1337 {
1338     struct wined3d_buffer *This = (struct wined3d_buffer *)iface;
1339     ULONG i;
1340
1341     TRACE("(%p)\n", This);
1342
1343     /* In the case that the number of Unmap calls > the
1344      * number of Map calls, d3d returns always D3D_OK.
1345      * This is also needed to prevent Map from returning garbage on
1346      * the next call (this will happen if the lock_count is < 0). */
1347     if(This->lock_count == 0)
1348     {
1349         TRACE("Unmap called without a previous Map call!\n");
1350         return WINED3D_OK;
1351     }
1352
1353     if (InterlockedDecrement(&This->lock_count))
1354     {
1355         /* Delay loading the buffer until everything is unlocked */
1356         TRACE("Ignoring unlock\n");
1357         return WINED3D_OK;
1358     }
1359
1360     if(!(This->flags & WINED3D_BUFFER_DOUBLEBUFFER) && This->buffer_object)
1361     {
1362         IWineD3DDeviceImpl *device = This->resource.device;
1363         const struct wined3d_gl_info *gl_info;
1364         struct wined3d_context *context;
1365
1366         if(This->buffer_type_hint == GL_ELEMENT_ARRAY_BUFFER_ARB)
1367         {
1368             IWineD3DDeviceImpl_MarkStateDirty(This->resource.device, STATE_INDEXBUFFER);
1369         }
1370
1371         context = context_acquire(device, NULL);
1372         gl_info = context->gl_info;
1373         ENTER_GL();
1374         GL_EXTCALL(glBindBufferARB(This->buffer_type_hint, This->buffer_object));
1375
1376         if (gl_info->supported[ARB_MAP_BUFFER_RANGE])
1377         {
1378             for(i = 0; i < This->modified_areas; i++)
1379             {
1380                 GL_EXTCALL(glFlushMappedBufferRange(This->buffer_type_hint,
1381                                                     This->maps[i].offset,
1382                                                     This->maps[i].size));
1383                 checkGLcall("glFlushMappedBufferRange");
1384             }
1385         }
1386         else if (This->flags & WINED3D_BUFFER_FLUSH)
1387         {
1388             for(i = 0; i < This->modified_areas; i++)
1389             {
1390                 GL_EXTCALL(glFlushMappedBufferRangeAPPLE(This->buffer_type_hint,
1391                                                          This->maps[i].offset,
1392                                                          This->maps[i].size));
1393                 checkGLcall("glFlushMappedBufferRangeAPPLE");
1394             }
1395         }
1396
1397         GL_EXTCALL(glUnmapBufferARB(This->buffer_type_hint));
1398         LEAVE_GL();
1399         context_release(context);
1400
1401         This->resource.allocatedMemory = NULL;
1402         buffer_clear_dirty_areas(This);
1403     }
1404     else if (This->flags & WINED3D_BUFFER_HASDESC)
1405     {
1406         buffer_PreLoad(iface);
1407     }
1408
1409     return WINED3D_OK;
1410 }
1411
1412 static HRESULT STDMETHODCALLTYPE buffer_GetDesc(IWineD3DBuffer *iface, WINED3DBUFFER_DESC *desc)
1413 {
1414     struct wined3d_buffer *This = (struct wined3d_buffer *)iface;
1415
1416     TRACE("(%p)\n", This);
1417
1418     desc->Type = This->resource.resourceType;
1419     desc->Usage = This->resource.usage;
1420     desc->Pool = This->resource.pool;
1421     desc->Size = This->resource.size;
1422
1423     return WINED3D_OK;
1424 }
1425
1426 static const struct IWineD3DBufferVtbl wined3d_buffer_vtbl =
1427 {
1428     /* IUnknown methods */
1429     buffer_QueryInterface,
1430     buffer_AddRef,
1431     buffer_Release,
1432     /* IWineD3DBase methods */
1433     buffer_GetParent,
1434     /* IWineD3DResource methods */
1435     buffer_SetPrivateData,
1436     buffer_GetPrivateData,
1437     buffer_FreePrivateData,
1438     buffer_SetPriority,
1439     buffer_GetPriority,
1440     buffer_PreLoad,
1441     buffer_UnLoad,
1442     buffer_GetType,
1443     /* IWineD3DBuffer methods */
1444     buffer_Map,
1445     buffer_Unmap,
1446     buffer_GetDesc,
1447 };
1448
1449 HRESULT buffer_init(struct wined3d_buffer *buffer, IWineD3DDeviceImpl *device,
1450         UINT size, DWORD usage, enum wined3d_format_id format_id, WINED3DPOOL pool, GLenum bind_hint,
1451         const char *data, IUnknown *parent, const struct wined3d_parent_ops *parent_ops)
1452 {
1453     const struct wined3d_format_desc *format_desc = getFormatDescEntry(format_id, &device->adapter->gl_info);
1454     HRESULT hr;
1455     const struct wined3d_gl_info *gl_info = &device->adapter->gl_info;
1456     BOOL dynamic_buffer_ok;
1457
1458     if (!size)
1459     {
1460         WARN("Size 0 requested, returning WINED3DERR_INVALIDCALL\n");
1461         return WINED3DERR_INVALIDCALL;
1462     }
1463
1464     buffer->vtbl = &wined3d_buffer_vtbl;
1465
1466     hr = resource_init((IWineD3DResource *)buffer, WINED3DRTYPE_BUFFER,
1467             device, size, usage, format_desc, pool, parent, parent_ops);
1468     if (FAILED(hr))
1469     {
1470         WARN("Failed to initialize resource, hr %#x\n", hr);
1471         return hr;
1472     }
1473     buffer->buffer_type_hint = bind_hint;
1474
1475     TRACE("size %#x, usage %#x, format %s, memory @ %p, iface @ %p.\n", buffer->resource.size, buffer->resource.usage,
1476             debug_d3dformat(buffer->resource.format_desc->format), buffer->resource.allocatedMemory, buffer);
1477
1478     /* GL_ARB_map_buffer_range is disabled for now due to numerous bugs and no gains */
1479     dynamic_buffer_ok = gl_info->supported[APPLE_FLUSH_BUFFER_RANGE];
1480
1481     /* Observations show that drawStridedSlow is faster on dynamic VBs than converting +
1482      * drawStridedFast (half-life 2 and others).
1483      *
1484      * Basically converting the vertices in the buffer is quite expensive, and observations
1485      * show that drawStridedSlow is faster than converting + uploading + drawStridedFast.
1486      * Therefore do not create a VBO for WINED3DUSAGE_DYNAMIC buffers.
1487      */
1488     if (!gl_info->supported[ARB_VERTEX_BUFFER_OBJECT])
1489     {
1490         TRACE("Not creating a vbo because GL_ARB_vertex_buffer is not supported\n");
1491     }
1492     else if(buffer->resource.pool == WINED3DPOOL_SYSTEMMEM)
1493     {
1494         TRACE("Not creating a vbo because the vertex buffer is in system memory\n");
1495     }
1496     else if(!dynamic_buffer_ok && (buffer->resource.usage & WINED3DUSAGE_DYNAMIC))
1497     {
1498         TRACE("Not creating a vbo because the buffer has dynamic usage and no GL support\n");
1499     }
1500     else
1501     {
1502         buffer->flags |= WINED3D_BUFFER_CREATEBO;
1503     }
1504
1505     if (data)
1506     {
1507         BYTE *ptr;
1508
1509         hr = IWineD3DBuffer_Map((IWineD3DBuffer *)buffer, 0, size, &ptr, 0);
1510         if (FAILED(hr))
1511         {
1512             ERR("Failed to map buffer, hr %#x\n", hr);
1513             buffer_UnLoad((IWineD3DBuffer *)buffer);
1514             resource_cleanup((IWineD3DResource *)buffer);
1515             return hr;
1516         }
1517
1518         memcpy(ptr, data, size);
1519
1520         hr = IWineD3DBuffer_Unmap((IWineD3DBuffer *)buffer);
1521         if (FAILED(hr))
1522         {
1523             ERR("Failed to unmap buffer, hr %#x\n", hr);
1524             buffer_UnLoad((IWineD3DBuffer *)buffer);
1525             resource_cleanup((IWineD3DResource *)buffer);
1526             return hr;
1527         }
1528     }
1529
1530     buffer->maps = HeapAlloc(GetProcessHeap(), 0, sizeof(*buffer->maps));
1531     if (!buffer->maps)
1532     {
1533         ERR("Out of memory\n");
1534         buffer_UnLoad((IWineD3DBuffer *)buffer);
1535         resource_cleanup((IWineD3DResource *)buffer);
1536         return E_OUTOFMEMORY;
1537     }
1538     buffer->maps_size = 1;
1539
1540     return WINED3D_OK;
1541 }