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 WINE_DECLARE_DEBUG_CHANNEL(d3d_perf);
  34
  35 #include <stdio.h>
  36 #include <math.h>
  37
  38 /* Context activation is done by the caller. */
  39 static void drawStridedFast(const struct wined3d_gl_info *gl_info, GLenum primitive_type, UINT count, UINT idx_size,
  40         const void *idx_data, UINT start_idx, INT base_vertex_index, UINT start_instance, UINT instance_count)
  41 {
  42     if (idx_size)
  43     {
  44         GLenum idxtype = idx_size == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT;
  45         if (instance_count)
  46         {
  47             if (!gl_info->supported[ARB_DRAW_INSTANCED])
  48             {
  49                 FIXME("Instanced drawing not supported.\n");
  50             }
  51             else
  52             {
  53                 if (start_instance)
  54                     FIXME("Start instance (%u) not supported.\n", start_instance);
  55                 GL_EXTCALL(glDrawElementsInstancedBaseVertex(primitive_type, count, idxtype,
  56                         (const char *)idx_data + (idx_size * start_idx), instance_count, base_vertex_index));
  57                 checkGLcall("glDrawElementsInstancedBaseVertex");
  58             }
  59         }
  60         else if (gl_info->supported[ARB_DRAW_ELEMENTS_BASE_VERTEX])
  61         {
  62             GL_EXTCALL(glDrawElementsBaseVertex(primitive_type, count, idxtype,
  63                     (const char *)idx_data + (idx_size * start_idx), base_vertex_index));
  64             checkGLcall("glDrawElementsBaseVertex");
  65         }
  66         else
  67         {
  68             gl_info->gl_ops.gl.p_glDrawElements(primitive_type, count,
  69                     idxtype, (const char *)idx_data + (idx_size * start_idx));
  70             checkGLcall("glDrawElements");
  71         }
  72     }
  73     else
  74     {
  75         gl_info->gl_ops.gl.p_glDrawArrays(primitive_type, start_idx, count);
  76         checkGLcall("glDrawArrays");
  77     }
  78 }
  79
  80 /*
  81  * Actually draw using the supplied information.
  82  * Slower GL version which extracts info about each vertex in turn
  83  */
  84
  85 /* Context activation is done by the caller. */
  86 static void drawStridedSlow(const struct wined3d_device *device, const struct wined3d_context *context,
  87         const struct wined3d_stream_info *si, UINT NumVertexes, GLenum glPrimType,
  88         const void *idxData, UINT idxSize, UINT startIdx)
  89 {
  90     unsigned int               textureNo    = 0;
  91     const WORD                *pIdxBufS     = NULL;
  92     const DWORD               *pIdxBufL     = NULL;
  93     UINT vx_index;
  94     const struct wined3d_state *state = &device->stateBlock->state;
  95     LONG SkipnStrides = startIdx;
  96     BOOL pixelShader = use_ps(state);
  97     BOOL specular_fog = FALSE;
  98     const BYTE *texCoords[WINED3DDP_MAXTEXCOORD];
  99     const BYTE *diffuse = NULL, *specular = NULL, *normal = NULL, *position = NULL;
 100     const struct wined3d_gl_info *gl_info = context->gl_info;
 101     const struct wined3d_d3d_info *d3d_info = context->d3d_info;
 102     UINT texture_stages = d3d_info->limits.ffp_blend_stages;
 103     const struct wined3d_stream_info_element *element;
 104     UINT num_untracked_materials;
 105     DWORD tex_mask = 0;
 106
 107     TRACE_(d3d_perf)("Using slow vertex array code\n");
 108
 109     /* Variable Initialization */
 110     if (idxSize)
 111     {
 112         /* Immediate mode drawing can't make use of indices in a vbo - get the
 113          * data from the index buffer. If the index buffer has no vbo (not
 114          * supported or other reason), or with user pointer drawing idxData
 115          * will be non-NULL. */
 116         if (!idxData)
 117             idxData = buffer_get_sysmem(state->index_buffer, gl_info);
 118
 119         if (idxSize == 2) pIdxBufS = idxData;
 120         else pIdxBufL = idxData;
 121     } else if (idxData) {
 122         ERR("non-NULL idxData with 0 idxSize, this should never happen\n");
 123         return;
 124     }
 125
 126     /* Start drawing in GL */
 127     gl_info->gl_ops.gl.p_glBegin(glPrimType);
 128
 129     if (si->use_map & (1 << WINED3D_FFP_POSITION))
 130     {
 131         element = &si->elements[WINED3D_FFP_POSITION];
 132         position = element->data.addr;
 133     }
 134
 135     if (si->use_map & (1 << WINED3D_FFP_NORMAL))
 136     {
 137         element = &si->elements[WINED3D_FFP_NORMAL];
 138         normal = element->data.addr;
 139     }
 140     else
 141     {
 142         gl_info->gl_ops.gl.p_glNormal3f(0, 0, 0);
 143     }
 144
 145     num_untracked_materials = context->num_untracked_materials;
 146     if (si->use_map & (1 << WINED3D_FFP_DIFFUSE))
 147     {
 148         element = &si->elements[WINED3D_FFP_DIFFUSE];
 149         diffuse = element->data.addr;
 150
 151         if (num_untracked_materials && element->format->id != WINED3DFMT_B8G8R8A8_UNORM)
 152             FIXME("Implement diffuse color tracking from %s\n", debug_d3dformat(element->format->id));
 153     }
 154     else
 155     {
 156         gl_info->gl_ops.gl.p_glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 157     }
 158
 159     if (si->use_map & (1 << WINED3D_FFP_SPECULAR))
 160     {
 161         element = &si->elements[WINED3D_FFP_SPECULAR];
 162         specular = element->data.addr;
 163
 164         /* special case where the fog density is stored in the specular alpha channel */
 165         if (state->render_states[WINED3D_RS_FOGENABLE]
 166                 && (state->render_states[WINED3D_RS_FOGVERTEXMODE] == WINED3D_FOG_NONE
 167                     || si->elements[WINED3D_FFP_POSITION].format->id == WINED3DFMT_R32G32B32A32_FLOAT)
 168                 && state->render_states[WINED3D_RS_FOGTABLEMODE] == WINED3D_FOG_NONE)
 169         {
 170             if (gl_info->supported[EXT_FOG_COORD])
 171             {
 172                 if (element->format->id == WINED3DFMT_B8G8R8A8_UNORM) specular_fog = TRUE;
 173                 else FIXME("Implement fog coordinates from %s\n", debug_d3dformat(element->format->id));
 174             }
 175             else
 176             {
 177                 static BOOL warned;
 178
 179                 if (!warned)
 180                 {
 181                     /* TODO: Use the fog table code from old ddraw */
 182                     FIXME("Implement fog for transformed vertices in software\n");
 183                     warned = TRUE;
 184                 }
 185             }
 186         }
 187     }
 188     else if (gl_info->supported[EXT_SECONDARY_COLOR])
 189     {
 190         GL_EXTCALL(glSecondaryColor3fEXT)(0, 0, 0);
 191     }
 192
 193     for (textureNo = 0; textureNo < texture_stages; ++textureNo)
 194     {
 195         int coordIdx = state->texture_states[textureNo][WINED3D_TSS_TEXCOORD_INDEX];
 196         DWORD texture_idx = device->texUnitMap[textureNo];
 197
 198         if (!gl_info->supported[ARB_MULTITEXTURE] && textureNo > 0)
 199         {
 200             FIXME("Program using multiple concurrent textures which this opengl implementation doesn't support\n");
 201             continue;
 202         }
 203
 204         if (!pixelShader && !state->textures[textureNo]) continue;
 205
 206         if (texture_idx == WINED3D_UNMAPPED_STAGE) continue;
 207
 208         if (coordIdx > 7)
 209         {
 210             TRACE("tex: %d - Skip tex coords, as being system generated\n", textureNo);
 211             continue;
 212         }
 213         else if (coordIdx < 0)
 214         {
 215             FIXME("tex: %d - Coord index %d is less than zero, expect a crash.\n", textureNo, coordIdx);
 216             continue;
 217         }
 218
 219         if (si->use_map & (1 << (WINED3D_FFP_TEXCOORD0 + coordIdx)))
 220         {
 221             element = &si->elements[WINED3D_FFP_TEXCOORD0 + coordIdx];
 222             texCoords[coordIdx] = element->data.addr;
 223             tex_mask |= (1 << textureNo);
 224         }
 225         else
 226         {
 227             TRACE("tex: %d - Skipping tex coords, as no data supplied\n", textureNo);
 228             if (gl_info->supported[ARB_MULTITEXTURE])
 229                 GL_EXTCALL(glMultiTexCoord4fARB(GL_TEXTURE0_ARB + texture_idx, 0, 0, 0, 1));
 230             else
 231                 gl_info->gl_ops.gl.p_glTexCoord4f(0, 0, 0, 1);
 232         }
 233     }
 234
 235     /* We shouldn't start this function if any VBO is involved. Should I put a safety check here?
 236      * Guess it's not necessary(we crash then anyway) and would only eat CPU time
 237      */
 238
 239     /* For each primitive */
 240     for (vx_index = 0; vx_index < NumVertexes; ++vx_index) {
 241         UINT texture, tmp_tex_mask;
 242         /* Blending data and Point sizes are not supported by this function. They are not supported by the fixed
 243          * function pipeline at all. A Fixme for them is printed after decoding the vertex declaration
 244          */
 245
 246         /* For indexed data, we need to go a few more strides in */
 247         if (idxData)
 248         {
 249             /* Indexed so work out the number of strides to skip */
 250             if (idxSize == 2)
 251                 SkipnStrides = pIdxBufS[startIdx + vx_index] + state->base_vertex_index;
 252             else
 253                 SkipnStrides = pIdxBufL[startIdx + vx_index] + state->base_vertex_index;
 254         }
 255
 256         tmp_tex_mask = tex_mask;
 257         for (texture = 0; tmp_tex_mask; tmp_tex_mask >>= 1, ++texture)
 258         {
 259             int coord_idx;
 260             const void *ptr;
 261             DWORD texture_idx;
 262
 263             if (!(tmp_tex_mask & 1)) continue;
 264
 265             coord_idx = state->texture_states[texture][WINED3D_TSS_TEXCOORD_INDEX];
 266             ptr = texCoords[coord_idx] + (SkipnStrides * si->elements[WINED3D_FFP_TEXCOORD0 + coord_idx].stride);
 267
 268             texture_idx = device->texUnitMap[texture];
 269             multi_texcoord_funcs[si->elements[WINED3D_FFP_TEXCOORD0 + coord_idx].format->emit_idx](
 270                     GL_TEXTURE0_ARB + texture_idx, ptr);
 271         }
 272
 273         /* Diffuse -------------------------------- */
 274         if (diffuse) {
 275             const void *ptrToCoords = diffuse + SkipnStrides * si->elements[WINED3D_FFP_DIFFUSE].stride;
 276
 277             diffuse_funcs[si->elements[WINED3D_FFP_DIFFUSE].format->emit_idx](ptrToCoords);
 278             if (num_untracked_materials)
 279             {
 280                 DWORD diffuseColor = ((const DWORD *)ptrToCoords)[0];
 281                 unsigned char i;
 282                 float color[4];
 283
 284                 color[0] = D3DCOLOR_B_R(diffuseColor) / 255.0f;
 285                 color[1] = D3DCOLOR_B_G(diffuseColor) / 255.0f;
 286                 color[2] = D3DCOLOR_B_B(diffuseColor) / 255.0f;
 287                 color[3] = D3DCOLOR_B_A(diffuseColor) / 255.0f;
 288
 289                 for (i = 0; i < num_untracked_materials; ++i)
 290                 {
 291                     gl_info->gl_ops.gl.p_glMaterialfv(GL_FRONT_AND_BACK, context->untracked_materials[i], color);
 292                 }
 293             }
 294         }
 295
 296         /* Specular ------------------------------- */
 297         if (specular) {
 298             const void *ptrToCoords = specular + SkipnStrides * si->elements[WINED3D_FFP_SPECULAR].stride;
 299
 300             specular_funcs[si->elements[WINED3D_FFP_SPECULAR].format->emit_idx](ptrToCoords);
 301
 302             if (specular_fog)
 303             {
 304                 DWORD specularColor = *(const DWORD *)ptrToCoords;
 305                 GL_EXTCALL(glFogCoordfEXT((float) (specularColor >> 24)));
 306             }
 307         }
 308
 309         /* Normal -------------------------------- */
 310         if (normal)
 311         {
 312             const void *ptrToCoords = normal + SkipnStrides * si->elements[WINED3D_FFP_NORMAL].stride;
 313             normal_funcs[si->elements[WINED3D_FFP_NORMAL].format->emit_idx](ptrToCoords);
 314         }
 315
 316         /* Position -------------------------------- */
 317         if (position) {
 318             const void *ptrToCoords = position + SkipnStrides * si->elements[WINED3D_FFP_POSITION].stride;
 319             position_funcs[si->elements[WINED3D_FFP_POSITION].format->emit_idx](ptrToCoords);
 320         }
 321
 322         /* For non indexed mode, step onto next parts */
 323         if (!idxData) ++SkipnStrides;
 324     }
 325
 326     gl_info->gl_ops.gl.p_glEnd();
 327     checkGLcall("glEnd and previous calls");
 328 }
 329
 330 /* Context activation is done by the caller. */
 331 static inline void send_attribute(const struct wined3d_gl_info *gl_info,
 332         enum wined3d_format_id format, const UINT index, const void *ptr)
 333 {
 334     switch(format)
 335     {
 336         case WINED3DFMT_R32_FLOAT:
 337             GL_EXTCALL(glVertexAttrib1fvARB(index, ptr));
 338             break;
 339         case WINED3DFMT_R32G32_FLOAT:
 340             GL_EXTCALL(glVertexAttrib2fvARB(index, ptr));
 341             break;
 342         case WINED3DFMT_R32G32B32_FLOAT:
 343             GL_EXTCALL(glVertexAttrib3fvARB(index, ptr));
 344             break;
 345         case WINED3DFMT_R32G32B32A32_FLOAT:
 346             GL_EXTCALL(glVertexAttrib4fvARB(index, ptr));
 347             break;
 348
 349         case WINED3DFMT_R8G8B8A8_UINT:
 350             GL_EXTCALL(glVertexAttrib4ubvARB(index, ptr));
 351             break;
 352         case WINED3DFMT_B8G8R8A8_UNORM:
 353             if (gl_info->supported[ARB_VERTEX_ARRAY_BGRA])
 354             {
 355                 const DWORD *src = ptr;
 356                 DWORD c = *src & 0xff00ff00;
 357                 c |= (*src & 0xff0000) >> 16;
 358                 c |= (*src & 0xff) << 16;
 359                 GL_EXTCALL(glVertexAttrib4NubvARB(index, (GLubyte *)&c));
 360                 break;
 361             }
 362             /* else fallthrough */
 363         case WINED3DFMT_R8G8B8A8_UNORM:
 364             GL_EXTCALL(glVertexAttrib4NubvARB(index, ptr));
 365             break;
 366
 367         case WINED3DFMT_R16G16_SINT:
 368             GL_EXTCALL(glVertexAttrib4svARB(index, ptr));
 369             break;
 370         case WINED3DFMT_R16G16B16A16_SINT:
 371             GL_EXTCALL(glVertexAttrib4svARB(index, ptr));
 372             break;
 373
 374         case WINED3DFMT_R16G16_SNORM:
 375         {
 376             GLshort s[4] = {((const GLshort *)ptr)[0], ((const GLshort *)ptr)[1], 0, 1};
 377             GL_EXTCALL(glVertexAttrib4NsvARB(index, s));
 378             break;
 379         }
 380         case WINED3DFMT_R16G16_UNORM:
 381         {
 382             GLushort s[4] = {((const GLushort *)ptr)[0], ((const GLushort *)ptr)[1], 0, 1};
 383             GL_EXTCALL(glVertexAttrib4NusvARB(index, s));
 384             break;
 385         }
 386         case WINED3DFMT_R16G16B16A16_SNORM:
 387             GL_EXTCALL(glVertexAttrib4NsvARB(index, ptr));
 388             break;
 389         case WINED3DFMT_R16G16B16A16_UNORM:
 390             GL_EXTCALL(glVertexAttrib4NusvARB(index, ptr));
 391             break;
 392
 393         case WINED3DFMT_R10G10B10A2_UINT:
 394             FIXME("Unsure about WINED3DDECLTYPE_UDEC3\n");
 395             /*glVertexAttrib3usvARB(instancedData[j], (GLushort *) ptr); Does not exist */
 396             break;
 397         case WINED3DFMT_R10G10B10A2_SNORM:
 398             FIXME("Unsure about WINED3DDECLTYPE_DEC3N\n");
 399             /*glVertexAttrib3NusvARB(instancedData[j], (GLushort *) ptr); Does not exist */
 400             break;
 401
 402         case WINED3DFMT_R16G16_FLOAT:
 403             /* Are those 16 bit floats. C doesn't have a 16 bit float type. I could read the single bits and calculate a 4
 404              * byte float according to the IEEE standard
 405              */
 406             if (gl_info->supported[NV_HALF_FLOAT] && gl_info->supported[NV_VERTEX_PROGRAM])
 407             {
 408                 /* Not supported by GL_ARB_half_float_vertex */
 409                 GL_EXTCALL(glVertexAttrib2hvNV(index, ptr));
 410             }
 411             else
 412             {
 413                 float x = float_16_to_32(((const unsigned short *)ptr) + 0);
 414                 float y = float_16_to_32(((const unsigned short *)ptr) + 1);
 415                 GL_EXTCALL(glVertexAttrib2fARB(index, x, y));
 416             }
 417             break;
 418         case WINED3DFMT_R16G16B16A16_FLOAT:
 419             if (gl_info->supported[NV_HALF_FLOAT] && gl_info->supported[NV_VERTEX_PROGRAM])
 420             {
 421                 /* Not supported by GL_ARB_half_float_vertex */
 422                 GL_EXTCALL(glVertexAttrib4hvNV(index, ptr));
 423             }
 424             else
 425             {
 426                 float x = float_16_to_32(((const unsigned short *)ptr) + 0);
 427                 float y = float_16_to_32(((const unsigned short *)ptr) + 1);
 428                 float z = float_16_to_32(((const unsigned short *)ptr) + 2);
 429                 float w = float_16_to_32(((const unsigned short *)ptr) + 3);
 430                 GL_EXTCALL(glVertexAttrib4fARB(index, x, y, z, w));
 431             }
 432             break;
 433
 434         default:
 435             ERR("Unexpected attribute format: %s\n", debug_d3dformat(format));
 436             break;
 437     }
 438 }
 439
 440 /* Context activation is done by the caller. */
 441 static void drawStridedSlowVs(const struct wined3d_gl_info *gl_info, const struct wined3d_state *state,
 442         const struct wined3d_stream_info *si, UINT numberOfVertices, GLenum glPrimitiveType,
 443         const void *idxData, UINT idxSize, UINT startIdx)
 444 {
 445     LONG SkipnStrides = startIdx + state->load_base_vertex_index;
 446     const DWORD *pIdxBufL = NULL;
 447     const WORD *pIdxBufS = NULL;
 448     UINT vx_index;
 449     int i;
 450     const BYTE *ptr;
 451
 452     if (idxSize)
 453     {
 454         /* Immediate mode drawing can't make use of indices in a vbo - get the
 455          * data from the index buffer. If the index buffer has no vbo (not
 456          * supported or other reason), or with user pointer drawing idxData
 457          * will be non-NULL. */
 458         if (!idxData)
 459             idxData = buffer_get_sysmem(state->index_buffer, gl_info);
 460
 461         if (idxSize == 2) pIdxBufS = idxData;
 462         else pIdxBufL = idxData;
 463     } else if (idxData) {
 464         ERR("non-NULL idxData with 0 idxSize, this should never happen\n");
 465         return;
 466     }
 467
 468     /* Start drawing in GL */
 469     gl_info->gl_ops.gl.p_glBegin(glPrimitiveType);
 470
 471     for (vx_index = 0; vx_index < numberOfVertices; ++vx_index)
 472     {
 473         if (idxData)
 474         {
 475             /* Indexed so work out the number of strides to skip */
 476             if (idxSize == 2)
 477                 SkipnStrides = pIdxBufS[startIdx + vx_index] + state->load_base_vertex_index;
 478             else
 479                 SkipnStrides = pIdxBufL[startIdx + vx_index] + state->load_base_vertex_index;
 480         }
 481
 482         for (i = MAX_ATTRIBS - 1; i >= 0; i--)
 483         {
 484             if (!(si->use_map & (1 << i))) continue;
 485
 486             ptr = si->elements[i].data.addr + si->elements[i].stride * SkipnStrides;
 487
 488             send_attribute(gl_info, si->elements[i].format->id, i, ptr);
 489         }
 490         SkipnStrides++;
 491     }
 492
 493     gl_info->gl_ops.gl.p_glEnd();
 494 }
 495
 496 /* Context activation is done by the caller. */
 497 static void drawStridedInstanced(const struct wined3d_gl_info *gl_info, const struct wined3d_state *state,
 498         const struct wined3d_stream_info *si, UINT numberOfVertices, GLenum glPrimitiveType,
 499         const void *idxData, UINT idxSize, UINT startIdx, UINT base_vertex_index, UINT instance_count)
 500 {
 501     int numInstancedAttribs = 0, j;
 502     UINT instancedData[sizeof(si->elements) / sizeof(*si->elements) /* 16 */];
 503     GLenum idxtype = idxSize == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT;
 504     UINT i;
 505
 506     if (!idxSize)
 507     {
 508         /* This is a nasty thing. MSDN says no hardware supports that and apps have to use software vertex processing.
 509          * We don't support this for now
 510          *
 511          * Shouldn't be too hard to support with opengl, in theory just call glDrawArrays instead of drawElements.
 512          * But the StreamSourceFreq value has a different meaning in that situation.
 513          */
 514         FIXME("Non-indexed instanced drawing is not supported\n");
 515         return;
 516     }
 517
 518     for (i = 0; i < sizeof(si->elements) / sizeof(*si->elements); ++i)
 519     {
 520         if (!(si->use_map & (1 << i))) continue;
 521
 522         if (state->streams[si->elements[i].stream_idx].flags & WINED3DSTREAMSOURCE_INSTANCEDATA)
 523         {
 524             instancedData[numInstancedAttribs] = i;
 525             numInstancedAttribs++;
 526         }
 527     }
 528
 529     for (i = 0; i < instance_count; ++i)
 530     {
 531         /* Specify the instanced attributes using immediate mode calls */
 532         for(j = 0; j < numInstancedAttribs; j++) {
 533             const BYTE *ptr = si->elements[instancedData[j]].data.addr
 534                     + si->elements[instancedData[j]].stride * i;
 535             if (si->elements[instancedData[j]].data.buffer_object)
 536             {
 537                 struct wined3d_buffer *vb = state->streams[si->elements[instancedData[j]].stream_idx].buffer;
 538                 ptr += (ULONG_PTR)buffer_get_sysmem(vb, gl_info);
 539             }
 540
 541             send_attribute(gl_info, si->elements[instancedData[j]].format->id, instancedData[j], ptr);
 542         }
 543
 544         if (gl_info->supported[ARB_DRAW_ELEMENTS_BASE_VERTEX])
 545         {
 546             GL_EXTCALL(glDrawElementsBaseVertex(glPrimitiveType, numberOfVertices, idxtype,
 547                         (const char *)idxData+(idxSize * startIdx), base_vertex_index));
 548             checkGLcall("glDrawElementsBaseVertex");
 549         }
 550         else
 551         {
 552             gl_info->gl_ops.gl.p_glDrawElements(glPrimitiveType, numberOfVertices, idxtype,
 553                         (const char *)idxData + (idxSize * startIdx));
 554             checkGLcall("glDrawElements");
 555         }
 556     }
 557 }
 558
 559 static void remove_vbos(const struct wined3d_gl_info *gl_info,
 560         const struct wined3d_state *state, struct wined3d_stream_info *s)
 561 {
 562     unsigned int i;
 563
 564     for (i = 0; i < (sizeof(s->elements) / sizeof(*s->elements)); ++i)
 565     {
 566         struct wined3d_stream_info_element *e;
 567
 568         if (!(s->use_map & (1 << i))) continue;
 569
 570         e = &s->elements[i];
 571         if (e->data.buffer_object)
 572         {
 573             struct wined3d_buffer *vb = state->streams[e->stream_idx].buffer;
 574             e->data.buffer_object = 0;
 575             e->data.addr = (BYTE *)((ULONG_PTR)e->data.addr + (ULONG_PTR)buffer_get_sysmem(vb, gl_info));
 576         }
 577     }
 578 }
 579
 580 /* Routine common to the draw primitive and draw indexed primitive routines */
 581 void draw_primitive(struct wined3d_device *device, UINT start_idx, UINT index_count,
 582         UINT start_instance, UINT instance_count, BOOL indexed)
 583 {
 584     const struct wined3d_state *state = &device->stateBlock->state;
 585     const struct wined3d_stream_info *stream_info;
 586     struct wined3d_event_query *ib_query = NULL;
 587     struct wined3d_stream_info si_emulated;
 588     const struct wined3d_gl_info *gl_info;
 589     struct wined3d_context *context;
 590     BOOL emulation = FALSE;
 591     const void *idx_data = NULL;
 592     UINT idx_size = 0;
 593     unsigned int i;
 594
 595     if (!index_count) return;
 596
 597     if (state->render_states[WINED3D_RS_COLORWRITEENABLE])
 598     {
 599         /* Invalidate the back buffer memory so LockRect will read it the next time */
 600         for (i = 0; i < device->adapter->gl_info.limits.buffers; ++i)
 601         {
 602             struct wined3d_surface *target = device->fb.render_targets[i];
 603             if (target)
 604             {
 605                 surface_load_location(target, target->draw_binding, NULL);
 606                 surface_modify_location(target, target->draw_binding, TRUE);
 607             }
 608         }
 609     }
 610
 611     /* Signals other modules that a drawing is in progress and the stateblock finalized */
 612     device->isInDraw = TRUE;
 613
 614     context = context_acquire(device, device->fb.render_targets[0]);
 615     if (!context->valid)
 616     {
 617         context_release(context);
 618         WARN("Invalid context, skipping draw.\n");
 619         return;
 620     }
 621     gl_info = context->gl_info;
 622
 623     if (device->fb.depth_stencil)
 624     {
 625         /* Note that this depends on the context_acquire() call above to set
 626          * context->render_offscreen properly. We don't currently take the
 627          * Z-compare function into account, but we could skip loading the
 628          * depthstencil for D3DCMP_NEVER and D3DCMP_ALWAYS as well. Also note
 629          * that we never copy the stencil data.*/
 630         DWORD location = context->render_offscreen ? device->fb.depth_stencil->draw_binding : SFLAG_INDRAWABLE;
 631         if (state->render_states[WINED3D_RS_ZWRITEENABLE] || state->render_states[WINED3D_RS_ZENABLE])
 632         {
 633             struct wined3d_surface *ds = device->fb.depth_stencil;
 634             RECT current_rect, draw_rect, r;
 635
 636             if (!context->render_offscreen && ds != device->onscreen_depth_stencil)
 637                 device_switch_onscreen_ds(device, context, ds);
 638
 639             if (ds->flags & location)
 640                 SetRect(&current_rect, 0, 0, ds->ds_current_size.cx, ds->ds_current_size.cy);
 641             else
 642                 SetRectEmpty(&current_rect);
 643
 644             wined3d_get_draw_rect(state, &draw_rect);
 645
 646             IntersectRect(&r, &draw_rect, &current_rect);
 647             if (!EqualRect(&r, &draw_rect))
 648                 surface_load_ds_location(ds, context, location);
 649         }
 650     }
 651
 652     if (!context_apply_draw_state(context, device))
 653     {
 654         context_release(context);
 655         WARN("Unable to apply draw state, skipping draw.\n");
 656         return;
 657     }
 658
 659     if (device->fb.depth_stencil && state->render_states[WINED3D_RS_ZWRITEENABLE])
 660     {
 661         struct wined3d_surface *ds = device->fb.depth_stencil;
 662         DWORD location = context->render_offscreen ? ds->draw_binding : SFLAG_INDRAWABLE;
 663
 664         surface_modify_ds_location(ds, location, ds->ds_current_size.cx, ds->ds_current_size.cy);
 665     }
 666
 667     if ((!gl_info->supported[WINED3D_GL_VERSION_2_0]
 668             || !gl_info->supported[NV_POINT_SPRITE])
 669             && context->render_offscreen
 670             && state->render_states[WINED3D_RS_POINTSPRITEENABLE]
 671             && state->gl_primitive_type == GL_POINTS)
 672     {
 673         FIXME("Point sprite coordinate origin switching not supported.\n");
 674     }
 675
 676     stream_info = &device->stream_info;
 677     if (device->instance_count)
 678         instance_count = device->instance_count;
 679
 680     if (indexed)
 681     {
 682         struct wined3d_buffer *index_buffer = state->index_buffer;
 683         if (!index_buffer->buffer_object || !stream_info->all_vbo)
 684             idx_data = index_buffer->resource.allocatedMemory;
 685         else
 686         {
 687             ib_query = index_buffer->query;
 688             idx_data = NULL;
 689         }
 690
 691         if (state->index_format == WINED3DFMT_R16_UINT)
 692             idx_size = 2;
 693         else
 694             idx_size = 4;
 695     }
 696
 697     if (!use_vs(state))
 698     {
 699         if (!stream_info->position_transformed && context->num_untracked_materials
 700                 && state->render_states[WINED3D_RS_LIGHTING])
 701         {
 702             static BOOL warned;
 703
 704             if (!warned++)
 705                 FIXME("Using software emulation because not all material properties could be tracked.\n");
 706             else
 707                 WARN_(d3d_perf)("Using software emulation because not all material properties could be tracked.\n");
 708             emulation = TRUE;
 709         }
 710         else if (context->fog_coord && state->render_states[WINED3D_RS_FOGENABLE])
 711         {
 712             static BOOL warned;
 713
 714             /* Either write a pipeline replacement shader or convert the
 715              * specular alpha from unsigned byte to a float in the vertex
 716              * buffer. */
 717             if (!warned++)
 718                 FIXME("Using software emulation because manual fog coordinates are provided.\n");
 719             else
 720                 WARN_(d3d_perf)("Using software emulation because manual fog coordinates are provided.\n");
 721             emulation = TRUE;
 722         }
 723
 724         if (emulation)
 725         {
 726             si_emulated = device->stream_info;
 727             remove_vbos(gl_info, state, &si_emulated);
 728             stream_info = &si_emulated;
 729         }
 730     }
 731
 732     if (device->useDrawStridedSlow || emulation)
 733     {
 734         /* Immediate mode drawing. */
 735         if (use_vs(state))
 736         {
 737             static BOOL warned;
 738
 739             if (!warned++)
 740                 FIXME("Using immediate mode with vertex shaders for half float emulation.\n");
 741             else
 742                 WARN_(d3d_perf)("Using immediate mode with vertex shaders for half float emulation.\n");
 743
 744             drawStridedSlowVs(gl_info, state, stream_info, index_count,
 745                     state->gl_primitive_type, idx_data, idx_size, start_idx);
 746         }
 747         else
 748         {
 749             drawStridedSlow(device, context, stream_info, index_count,
 750                     state->gl_primitive_type, idx_data, idx_size, start_idx);
 751         }
 752     }
 753     else if (!gl_info->supported[ARB_INSTANCED_ARRAYS] && instance_count)
 754     {
 755         /* Instancing emulation by mixing immediate mode and arrays. */
 756         drawStridedInstanced(gl_info, state, stream_info, index_count, state->gl_primitive_type,
 757                 idx_data, idx_size, start_idx, state->base_vertex_index, instance_count);
 758     }
 759     else
 760     {
 761         drawStridedFast(gl_info, state->gl_primitive_type, index_count, idx_size, idx_data,
 762                 start_idx, state->base_vertex_index, start_instance, instance_count);
 763     }
 764
 765     if (ib_query)
 766         wined3d_event_query_issue(ib_query, device);
 767     for (i = 0; i < device->num_buffer_queries; ++i)
 768     {
 769         wined3d_event_query_issue(device->buffer_queries[i], device);
 770     }
 771
 772     if (wined3d_settings.strict_draw_ordering)
 773         gl_info->gl_ops.gl.p_glFlush(); /* Flush to ensure ordering across contexts. */
 774
 775     context_release(context);
 776
 777     TRACE("Done all gl drawing\n");
 778
 779     /* Control goes back to the device, stateblock values may change again */
 780     device->isInDraw = FALSE;
 781 }