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wined3d: Get rid of some useless braces in draw_primitive().
[wine.git] / dlls / wined3d / drawprim.c
blob67f84a513e313c74971063a0090364228ede38fd
1 /*
2 * WINED3D draw functions
3 *
4 * Copyright 2002-2004 Jason Edmeades
5 * Copyright 2002-2004 Raphael Junqueira
6 * Copyright 2004 Christian Costa
7 * Copyright 2005 Oliver Stieber
8 * Copyright 2006, 2008 Henri Verbeet
9 * Copyright 2007-2008 Stefan Dösinger for CodeWeavers
10 * Copyright 2009 Henri Verbeet for CodeWeavers
11 *
12 * This library is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU Lesser General Public
14 * License as published by the Free Software Foundation; either
15 * version 2.1 of the License, or (at your option) any later version.
16 *
17 * This library is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * Lesser General Public License for more details.
21 *
22 * You should have received a copy of the GNU Lesser General Public
23 * License along with this library; if not, write to the Free Software
24 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
25 */
26
27 #include "config.h"
28 #include "wine/port.h"
29
30 #include "wined3d_private.h"
31
32 WINE_DEFAULT_DEBUG_CHANNEL(d3d_draw);
33
34 #include <stdio.h>
35 #include <math.h>
36
37 /* Context activation is done by the caller. */
38 static void drawStridedFast(const struct wined3d_gl_info *gl_info, GLenum primitive_type, UINT count, UINT idx_size,
39 const void *idx_data, UINT start_idx, INT base_vertex_index, UINT start_instance, UINT instance_count)
40 {
41 if (idx_size)
42 {
43 GLenum idxtype = idx_size == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT;
44 if (instance_count)
45 {
46 if (!gl_info->supported[ARB_DRAW_INSTANCED])
47 {
48 FIXME("Instanced drawing not supported.\n");
49 }
50 else
51 {
52 if (start_instance)
53 FIXME("Start instance (%u) not supported.\n", start_instance);
54 GL_EXTCALL(glDrawElementsInstancedBaseVertex(primitive_type, count, idxtype,
55 (const char *)idx_data + (idx_size * start_idx), instance_count, base_vertex_index));
56 checkGLcall("glDrawElementsInstancedBaseVertex");
57 }
58 }
59 else if (gl_info->supported[ARB_DRAW_ELEMENTS_BASE_VERTEX])
60 {
61 GL_EXTCALL(glDrawElementsBaseVertex(primitive_type, count, idxtype,
62 (const char *)idx_data + (idx_size * start_idx), base_vertex_index));
63 checkGLcall("glDrawElementsBaseVertex");
64 }
65 else
66 {
67 gl_info->gl_ops.gl.p_glDrawElements(primitive_type, count,
68 idxtype, (const char *)idx_data + (idx_size * start_idx));
69 checkGLcall("glDrawElements");
70 }
71 }
72 else
73 {
74 gl_info->gl_ops.gl.p_glDrawArrays(primitive_type, start_idx, count);
75 checkGLcall("glDrawArrays");
76 }
77 }
78
79 /*
80 * Actually draw using the supplied information.
81 * Slower GL version which extracts info about each vertex in turn
82 */
83
84 /* Context activation is done by the caller. */
85 static void drawStridedSlow(const struct wined3d_device *device, const struct wined3d_context *context,
86 const struct wined3d_stream_info *si, UINT NumVertexes, GLenum glPrimType,
87 const void *idxData, UINT idxSize, UINT startIdx)
88 {
89 unsigned int textureNo = 0;
90 const WORD *pIdxBufS = NULL;
91 const DWORD *pIdxBufL = NULL;
92 UINT vx_index;
93 const struct wined3d_state *state = &device->stateBlock->state;
94 LONG SkipnStrides = startIdx;
95 BOOL pixelShader = use_ps(state);
96 BOOL specular_fog = FALSE;
97 const BYTE *texCoords[WINED3DDP_MAXTEXCOORD];
98 const BYTE *diffuse = NULL, *specular = NULL, *normal = NULL, *position = NULL;
99 const struct wined3d_gl_info *gl_info = context->gl_info;
100 UINT texture_stages = gl_info->limits.texture_stages;
101 const struct wined3d_stream_info_element *element;
102 UINT num_untracked_materials;
103 DWORD tex_mask = 0;
104
105 TRACE("Using slow vertex array code\n");
106
107 /* Variable Initialization */
108 if (idxSize)
109 {
110 /* Immediate mode drawing can't make use of indices in a vbo - get the
111 * data from the index buffer. If the index buffer has no vbo (not
112 * supported or other reason), or with user pointer drawing idxData
113 * will be non-NULL. */
114 if (!idxData)
115 idxData = buffer_get_sysmem(state->index_buffer, gl_info);
116
117 if (idxSize == 2) pIdxBufS = idxData;
118 else pIdxBufL = idxData;
119 } else if (idxData) {
120 ERR("non-NULL idxData with 0 idxSize, this should never happen\n");
121 return;
122 }
123
124 /* Start drawing in GL */
125 gl_info->gl_ops.gl.p_glBegin(glPrimType);
126
127 if (si->use_map & (1 << WINED3D_FFP_POSITION))
128 {
129 element = &si->elements[WINED3D_FFP_POSITION];
130 position = element->data.addr;
131 }
132
133 if (si->use_map & (1 << WINED3D_FFP_NORMAL))
134 {
135 element = &si->elements[WINED3D_FFP_NORMAL];
136 normal = element->data.addr;
137 }
138 else
139 {
140 gl_info->gl_ops.gl.p_glNormal3f(0, 0, 0);
141 }
142
143 num_untracked_materials = context->num_untracked_materials;
144 if (si->use_map & (1 << WINED3D_FFP_DIFFUSE))
145 {
146 element = &si->elements[WINED3D_FFP_DIFFUSE];
147 diffuse = element->data.addr;
148
149 if (num_untracked_materials && element->format->id != WINED3DFMT_B8G8R8A8_UNORM)
150 FIXME("Implement diffuse color tracking from %s\n", debug_d3dformat(element->format->id));
151 }
152 else
153 {
154 gl_info->gl_ops.gl.p_glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
155 }
156
157 if (si->use_map & (1 << WINED3D_FFP_SPECULAR))
158 {
159 element = &si->elements[WINED3D_FFP_SPECULAR];
160 specular = element->data.addr;
161
162 /* special case where the fog density is stored in the specular alpha channel */
163 if (state->render_states[WINED3D_RS_FOGENABLE]
164 && (state->render_states[WINED3D_RS_FOGVERTEXMODE] == WINED3D_FOG_NONE
165 || si->elements[WINED3D_FFP_POSITION].format->id == WINED3DFMT_R32G32B32A32_FLOAT)
166 && state->render_states[WINED3D_RS_FOGTABLEMODE] == WINED3D_FOG_NONE)
167 {
168 if (gl_info->supported[EXT_FOG_COORD])
169 {
170 if (element->format->id == WINED3DFMT_B8G8R8A8_UNORM) specular_fog = TRUE;
171 else FIXME("Implement fog coordinates from %s\n", debug_d3dformat(element->format->id));
172 }
173 else
174 {
175 static BOOL warned;
176
177 if (!warned)
178 {
179 /* TODO: Use the fog table code from old ddraw */
180 FIXME("Implement fog for transformed vertices in software\n");
181 warned = TRUE;
182 }
183 }
184 }
185 }
186 else if (gl_info->supported[EXT_SECONDARY_COLOR])
187 {
188 GL_EXTCALL(glSecondaryColor3fEXT)(0, 0, 0);
189 }
190
191 for (textureNo = 0; textureNo < texture_stages; ++textureNo)
192 {
193 int coordIdx = state->texture_states[textureNo][WINED3D_TSS_TEXCOORD_INDEX];
194 DWORD texture_idx = device->texUnitMap[textureNo];
195
196 if (!gl_info->supported[ARB_MULTITEXTURE] && textureNo > 0)
197 {
198 FIXME("Program using multiple concurrent textures which this opengl implementation doesn't support\n");
199 continue;
200 }
201
202 if (!pixelShader && !state->textures[textureNo]) continue;
203
204 if (texture_idx == WINED3D_UNMAPPED_STAGE) continue;
205
206 if (coordIdx > 7)
207 {
208 TRACE("tex: %d - Skip tex coords, as being system generated\n", textureNo);
209 continue;
210 }
211 else if (coordIdx < 0)
212 {
213 FIXME("tex: %d - Coord index %d is less than zero, expect a crash.\n", textureNo, coordIdx);
214 continue;
215 }
216
217 if (si->use_map & (1 << (WINED3D_FFP_TEXCOORD0 + coordIdx)))
218 {
219 element = &si->elements[WINED3D_FFP_TEXCOORD0 + coordIdx];
220 texCoords[coordIdx] = element->data.addr;
221 tex_mask |= (1 << textureNo);
222 }
223 else
224 {
225 TRACE("tex: %d - Skipping tex coords, as no data supplied\n", textureNo);
226 if (gl_info->supported[ARB_MULTITEXTURE])
227 GL_EXTCALL(glMultiTexCoord4fARB(GL_TEXTURE0_ARB + texture_idx, 0, 0, 0, 1));
228 else
229 gl_info->gl_ops.gl.p_glTexCoord4f(0, 0, 0, 1);
230 }
231 }
232
233 /* We shouldn't start this function if any VBO is involved. Should I put a safety check here?
234 * Guess it's not necessary(we crash then anyway) and would only eat CPU time
235 */
236
237 /* For each primitive */
238 for (vx_index = 0; vx_index < NumVertexes; ++vx_index) {
239 UINT texture, tmp_tex_mask;
240 /* Blending data and Point sizes are not supported by this function. They are not supported by the fixed
241 * function pipeline at all. A Fixme for them is printed after decoding the vertex declaration
242 */
243
244 /* For indexed data, we need to go a few more strides in */
245 if (idxData)
246 {
247 /* Indexed so work out the number of strides to skip */
248 if (idxSize == 2)
249 SkipnStrides = pIdxBufS[startIdx + vx_index] + state->base_vertex_index;
250 else
251 SkipnStrides = pIdxBufL[startIdx + vx_index] + state->base_vertex_index;
252 }
253
254 tmp_tex_mask = tex_mask;
255 for (texture = 0; tmp_tex_mask; tmp_tex_mask >>= 1, ++texture)
256 {
257 int coord_idx;
258 const void *ptr;
259 DWORD texture_idx;
260
261 if (!(tmp_tex_mask & 1)) continue;
262
263 coord_idx = state->texture_states[texture][WINED3D_TSS_TEXCOORD_INDEX];
264 ptr = texCoords[coord_idx] + (SkipnStrides * si->elements[WINED3D_FFP_TEXCOORD0 + coord_idx].stride);
265
266 texture_idx = device->texUnitMap[texture];
267 multi_texcoord_funcs[si->elements[WINED3D_FFP_TEXCOORD0 + coord_idx].format->emit_idx](
268 GL_TEXTURE0_ARB + texture_idx, ptr);
269 }
270
271 /* Diffuse -------------------------------- */
272 if (diffuse) {
273 const void *ptrToCoords = diffuse + SkipnStrides * si->elements[WINED3D_FFP_DIFFUSE].stride;
274
275 diffuse_funcs[si->elements[WINED3D_FFP_DIFFUSE].format->emit_idx](ptrToCoords);
276 if (num_untracked_materials)
277 {
278 DWORD diffuseColor = ((const DWORD *)ptrToCoords)[0];
279 unsigned char i;
280 float color[4];
281
282 color[0] = D3DCOLOR_B_R(diffuseColor) / 255.0f;
283 color[1] = D3DCOLOR_B_G(diffuseColor) / 255.0f;
284 color[2] = D3DCOLOR_B_B(diffuseColor) / 255.0f;
285 color[3] = D3DCOLOR_B_A(diffuseColor) / 255.0f;
286
287 for (i = 0; i < num_untracked_materials; ++i)
288 {
289 gl_info->gl_ops.gl.p_glMaterialfv(GL_FRONT_AND_BACK, context->untracked_materials[i], color);
290 }
291 }
292 }
293
294 /* Specular ------------------------------- */
295 if (specular) {
296 const void *ptrToCoords = specular + SkipnStrides * si->elements[WINED3D_FFP_SPECULAR].stride;
297
298 specular_funcs[si->elements[WINED3D_FFP_SPECULAR].format->emit_idx](ptrToCoords);
299
300 if (specular_fog)
301 {
302 DWORD specularColor = *(const DWORD *)ptrToCoords;
303 GL_EXTCALL(glFogCoordfEXT((float) (specularColor >> 24)));
304 }
305 }
306
307 /* Normal -------------------------------- */
308 if (normal)
309 {
310 const void *ptrToCoords = normal + SkipnStrides * si->elements[WINED3D_FFP_NORMAL].stride;
311 normal_funcs[si->elements[WINED3D_FFP_NORMAL].format->emit_idx](ptrToCoords);
312 }
313
314 /* Position -------------------------------- */
315 if (position) {
316 const void *ptrToCoords = position + SkipnStrides * si->elements[WINED3D_FFP_POSITION].stride;
317 position_funcs[si->elements[WINED3D_FFP_POSITION].format->emit_idx](ptrToCoords);
318 }
319
320 /* For non indexed mode, step onto next parts */
321 if (!idxData) ++SkipnStrides;
322 }
323
324 gl_info->gl_ops.gl.p_glEnd();
325 checkGLcall("glEnd and previous calls");
326 }
327
328 /* Context activation is done by the caller. */
329 static inline void send_attribute(const struct wined3d_gl_info *gl_info,
330 enum wined3d_format_id format, const UINT index, const void *ptr)
331 {
332 switch(format)
333 {
334 case WINED3DFMT_R32_FLOAT:
335 GL_EXTCALL(glVertexAttrib1fvARB(index, ptr));
336 break;
337 case WINED3DFMT_R32G32_FLOAT:
338 GL_EXTCALL(glVertexAttrib2fvARB(index, ptr));
339 break;
340 case WINED3DFMT_R32G32B32_FLOAT:
341 GL_EXTCALL(glVertexAttrib3fvARB(index, ptr));
342 break;
343 case WINED3DFMT_R32G32B32A32_FLOAT:
344 GL_EXTCALL(glVertexAttrib4fvARB(index, ptr));
345 break;
346
347 case WINED3DFMT_R8G8B8A8_UINT:
348 GL_EXTCALL(glVertexAttrib4ubvARB(index, ptr));
349 break;
350 case WINED3DFMT_B8G8R8A8_UNORM:
351 if (gl_info->supported[ARB_VERTEX_ARRAY_BGRA])
352 {
353 const DWORD *src = ptr;
354 DWORD c = *src & 0xff00ff00;
355 c |= (*src & 0xff0000) >> 16;
356 c |= (*src & 0xff) << 16;
357 GL_EXTCALL(glVertexAttrib4NubvARB(index, (GLubyte *)&c));
358 break;
359 }
360 /* else fallthrough */
361 case WINED3DFMT_R8G8B8A8_UNORM:
362 GL_EXTCALL(glVertexAttrib4NubvARB(index, ptr));
363 break;
364
365 case WINED3DFMT_R16G16_SINT:
366 GL_EXTCALL(glVertexAttrib4svARB(index, ptr));
367 break;
368 case WINED3DFMT_R16G16B16A16_SINT:
369 GL_EXTCALL(glVertexAttrib4svARB(index, ptr));
370 break;
371
372 case WINED3DFMT_R16G16_SNORM:
373 {
374 GLshort s[4] = {((const GLshort *)ptr)[0], ((const GLshort *)ptr)[1], 0, 1};
375 GL_EXTCALL(glVertexAttrib4NsvARB(index, s));
376 break;
377 }
378 case WINED3DFMT_R16G16_UNORM:
379 {
380 GLushort s[4] = {((const GLushort *)ptr)[0], ((const GLushort *)ptr)[1], 0, 1};
381 GL_EXTCALL(glVertexAttrib4NusvARB(index, s));
382 break;
383 }
384 case WINED3DFMT_R16G16B16A16_SNORM:
385 GL_EXTCALL(glVertexAttrib4NsvARB(index, ptr));
386 break;
387 case WINED3DFMT_R16G16B16A16_UNORM:
388 GL_EXTCALL(glVertexAttrib4NusvARB(index, ptr));
389 break;
390
391 case WINED3DFMT_R10G10B10A2_UINT:
392 FIXME("Unsure about WINED3DDECLTYPE_UDEC3\n");
393 /*glVertexAttrib3usvARB(instancedData[j], (GLushort *) ptr); Does not exist */
394 break;
395 case WINED3DFMT_R10G10B10A2_SNORM:
396 FIXME("Unsure about WINED3DDECLTYPE_DEC3N\n");
397 /*glVertexAttrib3NusvARB(instancedData[j], (GLushort *) ptr); Does not exist */
398 break;
399
400 case WINED3DFMT_R16G16_FLOAT:
401 /* Are those 16 bit floats. C doesn't have a 16 bit float type. I could read the single bits and calculate a 4
402 * byte float according to the IEEE standard
403 */
404 if (gl_info->supported[NV_HALF_FLOAT] && gl_info->supported[NV_VERTEX_PROGRAM])
405 {
406 /* Not supported by GL_ARB_half_float_vertex */
407 GL_EXTCALL(glVertexAttrib2hvNV(index, ptr));
408 }
409 else
410 {
411 float x = float_16_to_32(((const unsigned short *)ptr) + 0);
412 float y = float_16_to_32(((const unsigned short *)ptr) + 1);
413 GL_EXTCALL(glVertexAttrib2fARB(index, x, y));
414 }
415 break;
416 case WINED3DFMT_R16G16B16A16_FLOAT:
417 if (gl_info->supported[NV_HALF_FLOAT] && gl_info->supported[NV_VERTEX_PROGRAM])
418 {
419 /* Not supported by GL_ARB_half_float_vertex */
420 GL_EXTCALL(glVertexAttrib4hvNV(index, ptr));
421 }
422 else
423 {
424 float x = float_16_to_32(((const unsigned short *)ptr) + 0);
425 float y = float_16_to_32(((const unsigned short *)ptr) + 1);
426 float z = float_16_to_32(((const unsigned short *)ptr) + 2);
427 float w = float_16_to_32(((const unsigned short *)ptr) + 3);
428 GL_EXTCALL(glVertexAttrib4fARB(index, x, y, z, w));
429 }
430 break;
431
432 default:
433 ERR("Unexpected attribute format: %s\n", debug_d3dformat(format));
434 break;
435 }
436 }
437
438 /* Context activation is done by the caller. */
439 static void drawStridedSlowVs(const struct wined3d_gl_info *gl_info, const struct wined3d_state *state,
440 const struct wined3d_stream_info *si, UINT numberOfVertices, GLenum glPrimitiveType,
441 const void *idxData, UINT idxSize, UINT startIdx)
442 {
443 LONG SkipnStrides = startIdx + state->load_base_vertex_index;
444 const DWORD *pIdxBufL = NULL;
445 const WORD *pIdxBufS = NULL;
446 UINT vx_index;
447 int i;
448 const BYTE *ptr;
449
450 if (idxSize)
451 {
452 /* Immediate mode drawing can't make use of indices in a vbo - get the
453 * data from the index buffer. If the index buffer has no vbo (not
454 * supported or other reason), or with user pointer drawing idxData
455 * will be non-NULL. */
456 if (!idxData)
457 idxData = buffer_get_sysmem(state->index_buffer, gl_info);
458
459 if (idxSize == 2) pIdxBufS = idxData;
460 else pIdxBufL = idxData;
461 } else if (idxData) {
462 ERR("non-NULL idxData with 0 idxSize, this should never happen\n");
463 return;
464 }
465
466 /* Start drawing in GL */
467 gl_info->gl_ops.gl.p_glBegin(glPrimitiveType);
468
469 for (vx_index = 0; vx_index < numberOfVertices; ++vx_index)
470 {
471 if (idxData)
472 {
473 /* Indexed so work out the number of strides to skip */
474 if (idxSize == 2)
475 SkipnStrides = pIdxBufS[startIdx + vx_index] + state->load_base_vertex_index;
476 else
477 SkipnStrides = pIdxBufL[startIdx + vx_index] + state->load_base_vertex_index;
478 }
479
480 for (i = MAX_ATTRIBS - 1; i >= 0; i--)
481 {
482 if (!(si->use_map & (1 << i))) continue;
483
484 ptr = si->elements[i].data.addr + si->elements[i].stride * SkipnStrides;
485
486 send_attribute(gl_info, si->elements[i].format->id, i, ptr);
487 }
488 SkipnStrides++;
489 }
490
491 gl_info->gl_ops.gl.p_glEnd();
492 }
493
494 /* Context activation is done by the caller. */
495 static void drawStridedInstanced(const struct wined3d_gl_info *gl_info, const struct wined3d_state *state,
496 const struct wined3d_stream_info *si, UINT numberOfVertices, GLenum glPrimitiveType,
497 const void *idxData, UINT idxSize, UINT startIdx, UINT base_vertex_index, UINT instance_count)
498 {
499 int numInstancedAttribs = 0, j;
500 UINT instancedData[sizeof(si->elements) / sizeof(*si->elements) /* 16 */];
501 GLenum idxtype = idxSize == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT;
502 UINT i;
503
504 if (!idxSize)
505 {
506 /* This is a nasty thing. MSDN says no hardware supports that and apps have to use software vertex processing.
507 * We don't support this for now
508 *
509 * Shouldn't be too hard to support with opengl, in theory just call glDrawArrays instead of drawElements.
510 * But the StreamSourceFreq value has a different meaning in that situation.
511 */
512 FIXME("Non-indexed instanced drawing is not supported\n");
513 return;
514 }
515
516 for (i = 0; i < sizeof(si->elements) / sizeof(*si->elements); ++i)
517 {
518 if (!(si->use_map & (1 << i))) continue;
519
520 if (state->streams[si->elements[i].stream_idx].flags & WINED3DSTREAMSOURCE_INSTANCEDATA)
521 {
522 instancedData[numInstancedAttribs] = i;
523 numInstancedAttribs++;
524 }
525 }
526
527 for (i = 0; i < instance_count; ++i)
528 {
529 /* Specify the instanced attributes using immediate mode calls */
530 for(j = 0; j < numInstancedAttribs; j++) {
531 const BYTE *ptr = si->elements[instancedData[j]].data.addr
532 + si->elements[instancedData[j]].stride * i;
533 if (si->elements[instancedData[j]].data.buffer_object)
534 {
535 struct wined3d_buffer *vb = state->streams[si->elements[instancedData[j]].stream_idx].buffer;
536 ptr += (ULONG_PTR)buffer_get_sysmem(vb, gl_info);
537 }
538
539 send_attribute(gl_info, si->elements[instancedData[j]].format->id, instancedData[j], ptr);
540 }
541
542 if (gl_info->supported[ARB_DRAW_ELEMENTS_BASE_VERTEX])
543 {
544 GL_EXTCALL(glDrawElementsBaseVertex(glPrimitiveType, numberOfVertices, idxtype,
545 (const char *)idxData+(idxSize * startIdx), base_vertex_index));
546 checkGLcall("glDrawElementsBaseVertex");
547 }
548 else
549 {
550 gl_info->gl_ops.gl.p_glDrawElements(glPrimitiveType, numberOfVertices, idxtype,
551 (const char *)idxData + (idxSize * startIdx));
552 checkGLcall("glDrawElements");
553 }
554 }
555 }
556
557 static void remove_vbos(const struct wined3d_gl_info *gl_info,
558 const struct wined3d_state *state, struct wined3d_stream_info *s)
559 {
560 unsigned int i;
561
562 for (i = 0; i < (sizeof(s->elements) / sizeof(*s->elements)); ++i)
563 {
564 struct wined3d_stream_info_element *e;
565
566 if (!(s->use_map & (1 << i))) continue;
567
568 e = &s->elements[i];
569 if (e->data.buffer_object)
570 {
571 struct wined3d_buffer *vb = state->streams[e->stream_idx].buffer;
572 e->data.buffer_object = 0;
573 e->data.addr = (BYTE *)((ULONG_PTR)e->data.addr + (ULONG_PTR)buffer_get_sysmem(vb, gl_info));
574 }
575 }
576 }
577
578 /* Routine common to the draw primitive and draw indexed primitive routines */
579 void draw_primitive(struct wined3d_device *device, UINT start_idx, UINT index_count,
580 UINT start_instance, UINT instance_count, BOOL indexed, const void *idx_data)
581 {
582 const struct wined3d_state *state = &device->stateBlock->state;
583 const struct wined3d_stream_info *stream_info;
584 struct wined3d_event_query *ib_query = NULL;
585 struct wined3d_stream_info si_emulated;
586 const struct wined3d_gl_info *gl_info;
587 struct wined3d_context *context;
588 BOOL emulation = FALSE;
589 UINT idx_size = 0;
590 unsigned int i;
591
592 if (!index_count) return;
593
594 if (state->render_states[WINED3D_RS_COLORWRITEENABLE])
595 {
596 /* Invalidate the back buffer memory so LockRect will read it the next time */
597 for (i = 0; i < device->adapter->gl_info.limits.buffers; ++i)
598 {
599 struct wined3d_surface *target = device->fb.render_targets[i];
600 if (target)
601 {
602 surface_load_location(target, target->draw_binding, NULL);
603 surface_modify_location(target, target->draw_binding, TRUE);
604 }
605 }
606 }
607
608 /* Signals other modules that a drawing is in progress and the stateblock finalized */
609 device->isInDraw = TRUE;
610
611 context = context_acquire(device, device->fb.render_targets[0]);
612 if (!context->valid)
613 {
614 context_release(context);
615 WARN("Invalid context, skipping draw.\n");
616 return;
617 }
618 gl_info = context->gl_info;
619
620 if (device->fb.depth_stencil)
621 {
622 /* Note that this depends on the context_acquire() call above to set
623 * context->render_offscreen properly. We don't currently take the
624 * Z-compare function into account, but we could skip loading the
625 * depthstencil for D3DCMP_NEVER and D3DCMP_ALWAYS as well. Also note
626 * that we never copy the stencil data.*/
627 DWORD location = context->render_offscreen ? device->fb.depth_stencil->draw_binding : SFLAG_INDRAWABLE;
628 if (state->render_states[WINED3D_RS_ZWRITEENABLE] || state->render_states[WINED3D_RS_ZENABLE])
629 {
630 struct wined3d_surface *ds = device->fb.depth_stencil;
631 RECT current_rect, draw_rect, r;
632
633 if (!context->render_offscreen && ds != device->onscreen_depth_stencil)
634 device_switch_onscreen_ds(device, context, ds);
635
636 if (ds->flags & location)
637 SetRect(&current_rect, 0, 0, ds->ds_current_size.cx, ds->ds_current_size.cy);
638 else
639 SetRectEmpty(&current_rect);
640
641 wined3d_get_draw_rect(state, &draw_rect);
642
643 IntersectRect(&r, &draw_rect, &current_rect);
644 if (!EqualRect(&r, &draw_rect))
645 surface_load_ds_location(ds, context, location);
646 }
647 }
648
649 if (!context_apply_draw_state(context, device))
650 {
651 context_release(context);
652 WARN("Unable to apply draw state, skipping draw.\n");
653 return;
654 }
655
656 if (device->fb.depth_stencil && state->render_states[WINED3D_RS_ZWRITEENABLE])
657 {
658 struct wined3d_surface *ds = device->fb.depth_stencil;
659 DWORD location = context->render_offscreen ? ds->draw_binding : SFLAG_INDRAWABLE;
660
661 surface_modify_ds_location(ds, location, ds->ds_current_size.cx, ds->ds_current_size.cy);
662 }
663
664 if ((!gl_info->supported[WINED3D_GL_VERSION_2_0]
665 || !gl_info->supported[NV_POINT_SPRITE])
666 && context->render_offscreen
667 && state->render_states[WINED3D_RS_POINTSPRITEENABLE]
668 && state->gl_primitive_type == GL_POINTS)
669 {
670 FIXME("Point sprite coordinate origin switching not supported.\n");
671 }
672
673 stream_info = &device->strided_streams;
674 if (device->instance_count)
675 instance_count = device->instance_count;
676
677 if (indexed)
678 {
679 if (!state->user_stream)
680 {
681 struct wined3d_buffer *index_buffer = state->index_buffer;
682 if (!index_buffer->buffer_object || !stream_info->all_vbo)
683 idx_data = index_buffer->resource.allocatedMemory;
684 else
685 {
686 ib_query = index_buffer->query;
687 idx_data = NULL;
688 }
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("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("Using software emulation because manual fog coordinates are provided.\n");
721 emulation = TRUE;
722 }
723
724 if (emulation)
725 {
726 si_emulated = device->strided_streams;
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("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 }
782
783 static void normalize_normal(float *n) {
784 float length = n[0] * n[0] + n[1] * n[1] + n[2] * n[2];
785 if (length == 0.0f) return;
786 length = sqrtf(length);
787 n[0] = n[0] / length;
788 n[1] = n[1] / length;
789 n[2] = n[2] / length;
790 }
791
792 /* Tesselates a high order rectangular patch into single triangles using gl evaluators
793 *
794 * The problem is that OpenGL does not offer a direct way to return the tesselated primitives,
795 * and they can't be sent off for rendering directly either. Tesselating is slow, so we want
796 * to cache the patches in a vertex buffer. But more importantly, gl can't bind generated
797 * attributes to numbered shader attributes, so we have to store them and rebind them as needed
798 * in drawprim.
799 *
800 * To read back, the opengl feedback mode is used. This creates a problem because we want
801 * untransformed, unlit vertices, but feedback runs everything through transform and lighting.
802 * Thus disable lighting and set identity matrices to get unmodified colors and positions.
803 * To overcome clipping find the biggest x, y and z values of the vertices in the patch and scale
804 * them to [-1.0;+1.0] and set the viewport up to scale them back.
805 *
806 * Normals are more tricky: Draw white vertices with 3 directional lights, and calculate the
807 * resulting colors back to the normals.
808 *
809 * NOTE: This function activates a context for blitting, modifies matrices & viewport, but
810 * does not restore it because normally a draw follows immediately afterwards. The caller is
811 * responsible of taking care that either the gl states are restored, or the context activated
812 * for drawing to reset the lastWasBlit flag.
813 */
814 HRESULT tesselate_rectpatch(struct wined3d_device *This, struct wined3d_rect_patch *patch)
815 {
816 unsigned int i, j, num_quads, out_vertex_size, buffer_size, d3d_out_vertex_size;
817 const struct wined3d_rect_patch_info *info = &patch->rect_patch_info;
818 float max_x = 0.0f, max_y = 0.0f, max_z = 0.0f, neg_z = 0.0f;
819 struct wined3d_state *state = &This->stateBlock->state;
820 struct wined3d_stream_info stream_info;
821 struct wined3d_stream_info_element *e;
822 const struct wined3d_gl_info *gl_info;
823 struct wined3d_context *context;
824 struct wined3d_shader *vs;
825 const BYTE *data;
826 DWORD vtxStride;
827 GLenum feedback_type;
828 GLfloat *feedbuffer;
829
830 /* Simply activate the context for blitting. This disables all the things we don't want and
831 * takes care of dirtifying. Dirtifying is preferred over pushing / popping, since drawing the
832 * patch (as opposed to normal draws) will most likely need different changes anyway. */
833 context = context_acquire(This, NULL);
834 gl_info = context->gl_info;
835 context_apply_blit_state(context, This);
836
837 /* First, locate the position data. This is provided in a vertex buffer in
838 * the stateblock. Beware of VBOs. */
839 vs = state->vertex_shader;
840 state->vertex_shader = NULL;
841 device_stream_info_from_declaration(This, &stream_info);
842 state->vertex_shader = vs;
843
844 e = &stream_info.elements[WINED3D_FFP_POSITION];
845 if (e->data.buffer_object)
846 {
847 struct wined3d_buffer *vb = state->streams[e->stream_idx].buffer;
848 e->data.addr = (BYTE *)((ULONG_PTR)e->data.addr + (ULONG_PTR)buffer_get_sysmem(vb, context->gl_info));
849 }
850 vtxStride = e->stride;
851 data = e->data.addr
852 + vtxStride * info->stride * info->start_vertex_offset_height
853 + vtxStride * info->start_vertex_offset_width;
854
855 /* Not entirely sure about what happens with transformed vertices */
856 if (stream_info.position_transformed) FIXME("Transformed position in rectpatch generation\n");
857
858 if(vtxStride % sizeof(GLfloat)) {
859 /* glMap2f reads vertex sizes in GLfloats, the d3d stride is in bytes.
860 * I don't see how the stride could not be a multiple of 4, but make sure
861 * to check it
862 */
863 ERR("Vertex stride is not a multiple of sizeof(GLfloat)\n");
864 }
865 if (info->basis != WINED3D_BASIS_BEZIER)
866 FIXME("Basis is %s, how to handle this?\n", debug_d3dbasis(info->basis));
867 if (info->degree != WINED3D_DEGREE_CUBIC)
868 FIXME("Degree is %s, how to handle this?\n", debug_d3ddegree(info->degree));
869
870 /* First, get the boundary cube of the input data */
871 for (j = 0; j < info->height; ++j)
872 {
873 for (i = 0; i < info->width; ++i)
874 {
875 const float *v = (const float *)(data + vtxStride * i + vtxStride * info->stride * j);
876 if(fabs(v[0]) > max_x) max_x = fabsf(v[0]);
877 if(fabs(v[1]) > max_y) max_y = fabsf(v[1]);
878 if(fabs(v[2]) > max_z) max_z = fabsf(v[2]);
879 if(v[2] < neg_z) neg_z = v[2];
880 }
881 }
882
883 /* This needs some improvements in the vertex decl code */
884 FIXME("Cannot find data to generate. Only generating position and normals\n");
885 patch->has_normals = TRUE;
886 patch->has_texcoords = FALSE;
887
888 gl_info->gl_ops.gl.p_glMatrixMode(GL_PROJECTION);
889 checkGLcall("glMatrixMode(GL_PROJECTION)");
890 gl_info->gl_ops.gl.p_glLoadIdentity();
891 checkGLcall("glLoadIdentity()");
892 gl_info->gl_ops.gl.p_glScalef(1.0f / (max_x), 1.0f / (max_y), max_z == 0.0f ? 1.0f : 1.0f / (2.0f * max_z));
893 gl_info->gl_ops.gl.p_glTranslatef(0.0f, 0.0f, 0.5f);
894 checkGLcall("glScalef");
895 gl_info->gl_ops.gl.p_glViewport(-max_x, -max_y, 2 * (max_x), 2 * (max_y));
896 checkGLcall("glViewport");
897
898 /* Some states to take care of. If we're in wireframe opengl will produce lines, and confuse
899 * our feedback buffer parser
900 */
901 gl_info->gl_ops.gl.p_glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
902 checkGLcall("glPolygonMode(GL_FRONT_AND_BACK, GL_FILL)");
903 context_invalidate_state(context, STATE_RENDER(WINED3D_RS_FILLMODE));
904 if (patch->has_normals)
905 {
906 static const GLfloat black[] = {0.0f, 0.0f, 0.0f, 0.0f};
907 static const GLfloat red[] = {1.0f, 0.0f, 0.0f, 0.0f};
908 static const GLfloat green[] = {0.0f, 1.0f, 0.0f, 0.0f};
909 static const GLfloat blue[] = {0.0f, 0.0f, 1.0f, 0.0f};
910 static const GLfloat white[] = {1.0f, 1.0f, 1.0f, 1.0f};
911 gl_info->gl_ops.gl.p_glEnable(GL_LIGHTING);
912 checkGLcall("glEnable(GL_LIGHTING)");
913 gl_info->gl_ops.gl.p_glLightModelfv(GL_LIGHT_MODEL_AMBIENT, black);
914 checkGLcall("glLightModel for MODEL_AMBIENT");
915 context_invalidate_state(context, STATE_RENDER(WINED3D_RS_AMBIENT));
916
917 for (i = 3; i < context->gl_info->limits.lights; ++i)
918 {
919 gl_info->gl_ops.gl.p_glDisable(GL_LIGHT0 + i);
920 checkGLcall("glDisable(GL_LIGHT0 + i)");
921 context_invalidate_state(context, STATE_ACTIVELIGHT(i));
922 }
923
924 context_invalidate_state(context, STATE_ACTIVELIGHT(0));
925 gl_info->gl_ops.gl.p_glLightfv(GL_LIGHT0, GL_DIFFUSE, red);
926 gl_info->gl_ops.gl.p_glLightfv(GL_LIGHT0, GL_SPECULAR, black);
927 gl_info->gl_ops.gl.p_glLightfv(GL_LIGHT0, GL_AMBIENT, black);
928 gl_info->gl_ops.gl.p_glLightfv(GL_LIGHT0, GL_POSITION, red);
929 gl_info->gl_ops.gl.p_glEnable(GL_LIGHT0);
930 checkGLcall("Setting up light 1");
931 context_invalidate_state(context, STATE_ACTIVELIGHT(1));
932 gl_info->gl_ops.gl.p_glLightfv(GL_LIGHT1, GL_DIFFUSE, green);
933 gl_info->gl_ops.gl.p_glLightfv(GL_LIGHT1, GL_SPECULAR, black);
934 gl_info->gl_ops.gl.p_glLightfv(GL_LIGHT1, GL_AMBIENT, black);
935 gl_info->gl_ops.gl.p_glLightfv(GL_LIGHT1, GL_POSITION, green);
936 gl_info->gl_ops.gl.p_glEnable(GL_LIGHT1);
937 checkGLcall("Setting up light 2");
938 context_invalidate_state(context, STATE_ACTIVELIGHT(2));
939 gl_info->gl_ops.gl.p_glLightfv(GL_LIGHT2, GL_DIFFUSE, blue);
940 gl_info->gl_ops.gl.p_glLightfv(GL_LIGHT2, GL_SPECULAR, black);
941 gl_info->gl_ops.gl.p_glLightfv(GL_LIGHT2, GL_AMBIENT, black);
942 gl_info->gl_ops.gl.p_glLightfv(GL_LIGHT2, GL_POSITION, blue);
943 gl_info->gl_ops.gl.p_glEnable(GL_LIGHT2);
944 checkGLcall("Setting up light 3");
945
946 context_invalidate_state(context, STATE_MATERIAL);
947 context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORVERTEX));
948 gl_info->gl_ops.gl.p_glDisable(GL_COLOR_MATERIAL);
949 gl_info->gl_ops.gl.p_glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, black);
950 gl_info->gl_ops.gl.p_glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, black);
951 gl_info->gl_ops.gl.p_glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, white);
952 checkGLcall("Setting up materials");
953 }
954
955 /* Enable the needed maps.
956 * GL_MAP2_VERTEX_3 is needed for positional data.
957 * GL_AUTO_NORMAL to generate normals from the position. Do not use GL_MAP2_NORMAL.
958 * GL_MAP2_TEXTURE_COORD_4 for texture coords
959 */
960 num_quads = ceilf(patch->numSegs[0]) * ceilf(patch->numSegs[1]);
961 out_vertex_size = 3 /* position */;
962 d3d_out_vertex_size = 3;
963 gl_info->gl_ops.gl.p_glEnable(GL_MAP2_VERTEX_3);
964 if (patch->has_normals && patch->has_texcoords)
965 {
966 FIXME("Texcoords not handled yet\n");
967 feedback_type = GL_3D_COLOR_TEXTURE;
968 out_vertex_size += 8;
969 d3d_out_vertex_size += 7;
970 gl_info->gl_ops.gl.p_glEnable(GL_AUTO_NORMAL);
971 gl_info->gl_ops.gl.p_glEnable(GL_MAP2_TEXTURE_COORD_4);
972 }
973 else if (patch->has_texcoords)
974 {
975 FIXME("Texcoords not handled yet\n");
976 feedback_type = GL_3D_COLOR_TEXTURE;
977 out_vertex_size += 7;
978 d3d_out_vertex_size += 4;
979 gl_info->gl_ops.gl.p_glEnable(GL_MAP2_TEXTURE_COORD_4);
980 }
981 else if (patch->has_normals)
982 {
983 feedback_type = GL_3D_COLOR;
984 out_vertex_size += 4;
985 d3d_out_vertex_size += 3;
986 gl_info->gl_ops.gl.p_glEnable(GL_AUTO_NORMAL);
987 }
988 else
989 {
990 feedback_type = GL_3D;
991 }
992 checkGLcall("glEnable vertex attrib generation");
993
994 buffer_size = num_quads * out_vertex_size * 2 /* triangle list */ * 3 /* verts per tri */
995 + 4 * num_quads /* 2 triangle markers per quad + num verts in tri */;
996 feedbuffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, buffer_size * sizeof(float) * 8);
997
998 gl_info->gl_ops.gl.p_glMap2f(GL_MAP2_VERTEX_3,
999 0.0f, 1.0f, vtxStride / sizeof(float), info->width,
1000 0.0f, 1.0f, info->stride * vtxStride / sizeof(float), info->height,
1001 (const GLfloat *)data);
1002 checkGLcall("glMap2f");
1003 if (patch->has_texcoords)
1004 {
1005 gl_info->gl_ops.gl.p_glMap2f(GL_MAP2_TEXTURE_COORD_4,
1006 0.0f, 1.0f, vtxStride / sizeof(float), info->width,
1007 0.0f, 1.0f, info->stride * vtxStride / sizeof(float), info->height,
1008 (const GLfloat *)data);
1009 checkGLcall("glMap2f");
1010 }
1011 gl_info->gl_ops.gl.p_glMapGrid2f(ceilf(patch->numSegs[0]), 0.0f, 1.0f, ceilf(patch->numSegs[1]), 0.0f, 1.0f);
1012 checkGLcall("glMapGrid2f");
1013
1014 gl_info->gl_ops.gl.p_glFeedbackBuffer(buffer_size * 2, feedback_type, feedbuffer);
1015 checkGLcall("glFeedbackBuffer");
1016 gl_info->gl_ops.gl.p_glRenderMode(GL_FEEDBACK);
1017
1018 gl_info->gl_ops.gl.p_glEvalMesh2(GL_FILL, 0, ceilf(patch->numSegs[0]), 0, ceilf(patch->numSegs[1]));
1019 checkGLcall("glEvalMesh2");
1020
1021 i = gl_info->gl_ops.gl.p_glRenderMode(GL_RENDER);
1022 if (i == -1)
1023 {
1024 ERR("Feedback failed. Expected %d elements back\n", buffer_size);
1025 HeapFree(GetProcessHeap(), 0, feedbuffer);
1026 context_release(context);
1027 return WINED3DERR_DRIVERINTERNALERROR;
1028 }
1029 else if (i != buffer_size)
1030 {
1031 ERR("Unexpected amount of elements returned. Expected %d, got %d\n", buffer_size, i);
1032 HeapFree(GetProcessHeap(), 0, feedbuffer);
1033 context_release(context);
1034 return WINED3DERR_DRIVERINTERNALERROR;
1035 }
1036 else
1037 {
1038 TRACE("Got %d elements as expected\n", i);
1039 }
1040
1041 HeapFree(GetProcessHeap(), 0, patch->mem);
1042 patch->mem = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, num_quads * 6 * d3d_out_vertex_size * sizeof(float) * 8);
1043 i = 0;
1044 for(j = 0; j < buffer_size; j += (3 /* num verts */ * out_vertex_size + 2 /* tri marker */)) {
1045 if(feedbuffer[j] != GL_POLYGON_TOKEN) {
1046 ERR("Unexpected token: %f\n", feedbuffer[j]);
1047 continue;
1048 }
1049 if(feedbuffer[j + 1] != 3) {
1050 ERR("Unexpected polygon: %f corners\n", feedbuffer[j + 1]);
1051 continue;
1052 }
1053 /* Somehow there are different ideas about back / front facing, so fix up the
1054 * vertex order
1055 */
1056 patch->mem[i + 0] = feedbuffer[j + out_vertex_size * 2 + 2]; /* x, triangle 2 */
1057 patch->mem[i + 1] = feedbuffer[j + out_vertex_size * 2 + 3]; /* y, triangle 2 */
1058 patch->mem[i + 2] = (feedbuffer[j + out_vertex_size * 2 + 4] - 0.5f) * 4.0f * max_z; /* z, triangle 3 */
1059 if(patch->has_normals) {
1060 patch->mem[i + 3] = feedbuffer[j + out_vertex_size * 2 + 5];
1061 patch->mem[i + 4] = feedbuffer[j + out_vertex_size * 2 + 6];
1062 patch->mem[i + 5] = feedbuffer[j + out_vertex_size * 2 + 7];
1063 }
1064 i += d3d_out_vertex_size;
1065
1066 patch->mem[i + 0] = feedbuffer[j + out_vertex_size * 1 + 2]; /* x, triangle 2 */
1067 patch->mem[i + 1] = feedbuffer[j + out_vertex_size * 1 + 3]; /* y, triangle 2 */
1068 patch->mem[i + 2] = (feedbuffer[j + out_vertex_size * 1 + 4] - 0.5f) * 4.0f * max_z; /* z, triangle 2 */
1069 if(patch->has_normals) {
1070 patch->mem[i + 3] = feedbuffer[j + out_vertex_size * 1 + 5];
1071 patch->mem[i + 4] = feedbuffer[j + out_vertex_size * 1 + 6];
1072 patch->mem[i + 5] = feedbuffer[j + out_vertex_size * 1 + 7];
1073 }
1074 i += d3d_out_vertex_size;
1075
1076 patch->mem[i + 0] = feedbuffer[j + out_vertex_size * 0 + 2]; /* x, triangle 1 */
1077 patch->mem[i + 1] = feedbuffer[j + out_vertex_size * 0 + 3]; /* y, triangle 1 */
1078 patch->mem[i + 2] = (feedbuffer[j + out_vertex_size * 0 + 4] - 0.5f) * 4.0f * max_z; /* z, triangle 1 */
1079 if(patch->has_normals) {
1080 patch->mem[i + 3] = feedbuffer[j + out_vertex_size * 0 + 5];
1081 patch->mem[i + 4] = feedbuffer[j + out_vertex_size * 0 + 6];
1082 patch->mem[i + 5] = feedbuffer[j + out_vertex_size * 0 + 7];
1083 }
1084 i += d3d_out_vertex_size;
1085 }
1086
1087 if(patch->has_normals) {
1088 /* Now do the same with reverse light directions */
1089 static const GLfloat x[] = {-1.0f, 0.0f, 0.0f, 0.0f};
1090 static const GLfloat y[] = { 0.0f, -1.0f, 0.0f, 0.0f};
1091 static const GLfloat z[] = { 0.0f, 0.0f, -1.0f, 0.0f};
1092 gl_info->gl_ops.gl.p_glLightfv(GL_LIGHT0, GL_POSITION, x);
1093 gl_info->gl_ops.gl.p_glLightfv(GL_LIGHT1, GL_POSITION, y);
1094 gl_info->gl_ops.gl.p_glLightfv(GL_LIGHT2, GL_POSITION, z);
1095 checkGLcall("Setting up reverse light directions");
1096
1097 gl_info->gl_ops.gl.p_glRenderMode(GL_FEEDBACK);
1098 checkGLcall("glRenderMode(GL_FEEDBACK)");
1099 gl_info->gl_ops.gl.p_glEvalMesh2(GL_FILL, 0, ceilf(patch->numSegs[0]), 0, ceilf(patch->numSegs[1]));
1100 checkGLcall("glEvalMesh2");
1101 i = gl_info->gl_ops.gl.p_glRenderMode(GL_RENDER);
1102 checkGLcall("glRenderMode(GL_RENDER)");
1103
1104 i = 0;
1105 for(j = 0; j < buffer_size; j += (3 /* num verts */ * out_vertex_size + 2 /* tri marker */)) {
1106 if(feedbuffer[j] != GL_POLYGON_TOKEN) {
1107 ERR("Unexpected token: %f\n", feedbuffer[j]);
1108 continue;
1109 }
1110 if(feedbuffer[j + 1] != 3) {
1111 ERR("Unexpected polygon: %f corners\n", feedbuffer[j + 1]);
1112 continue;
1113 }
1114 if(patch->mem[i + 3] == 0.0f)
1115 patch->mem[i + 3] = -feedbuffer[j + out_vertex_size * 2 + 5];
1116 if(patch->mem[i + 4] == 0.0f)
1117 patch->mem[i + 4] = -feedbuffer[j + out_vertex_size * 2 + 6];
1118 if(patch->mem[i + 5] == 0.0f)
1119 patch->mem[i + 5] = -feedbuffer[j + out_vertex_size * 2 + 7];
1120 normalize_normal(patch->mem + i + 3);
1121 i += d3d_out_vertex_size;
1122
1123 if(patch->mem[i + 3] == 0.0f)
1124 patch->mem[i + 3] = -feedbuffer[j + out_vertex_size * 1 + 5];
1125 if(patch->mem[i + 4] == 0.0f)
1126 patch->mem[i + 4] = -feedbuffer[j + out_vertex_size * 1 + 6];
1127 if(patch->mem[i + 5] == 0.0f)
1128 patch->mem[i + 5] = -feedbuffer[j + out_vertex_size * 1 + 7];
1129 normalize_normal(patch->mem + i + 3);
1130 i += d3d_out_vertex_size;
1131
1132 if(patch->mem[i + 3] == 0.0f)
1133 patch->mem[i + 3] = -feedbuffer[j + out_vertex_size * 0 + 5];
1134 if(patch->mem[i + 4] == 0.0f)
1135 patch->mem[i + 4] = -feedbuffer[j + out_vertex_size * 0 + 6];
1136 if(patch->mem[i + 5] == 0.0f)
1137 patch->mem[i + 5] = -feedbuffer[j + out_vertex_size * 0 + 7];
1138 normalize_normal(patch->mem + i + 3);
1139 i += d3d_out_vertex_size;
1140 }
1141 }
1142
1143 gl_info->gl_ops.gl.p_glDisable(GL_MAP2_VERTEX_3);
1144 gl_info->gl_ops.gl.p_glDisable(GL_AUTO_NORMAL);
1145 gl_info->gl_ops.gl.p_glDisable(GL_MAP2_NORMAL);
1146 gl_info->gl_ops.gl.p_glDisable(GL_MAP2_TEXTURE_COORD_4);
1147 checkGLcall("glDisable vertex attrib generation");
1148
1149 context_release(context);
1150
1151 HeapFree(GetProcessHeap(), 0, feedbuffer);
1152
1153 vtxStride = 3 * sizeof(float);
1154 if(patch->has_normals) {
1155 vtxStride += 3 * sizeof(float);
1156 }
1157 if(patch->has_texcoords) {
1158 vtxStride += 4 * sizeof(float);
1159 }
1160 memset(&patch->strided, 0, sizeof(patch->strided));
1161 patch->strided.position.format = WINED3DFMT_R32G32B32_FLOAT;
1162 patch->strided.position.data = (BYTE *)patch->mem;
1163 patch->strided.position.stride = vtxStride;
1164
1165 if (patch->has_normals)
1166 {
1167 patch->strided.normal.format = WINED3DFMT_R32G32B32_FLOAT;
1168 patch->strided.normal.data = (BYTE *)patch->mem + 3 * sizeof(float) /* pos */;
1169 patch->strided.normal.stride = vtxStride;
1170 }
1171 if (patch->has_texcoords)
1172 {
1173 patch->strided.tex_coords[0].format = WINED3DFMT_R32G32B32A32_FLOAT;
1174 patch->strided.tex_coords[0].data = (BYTE *)patch->mem + 3 * sizeof(float) /* pos */;
1175 if (patch->has_normals)
1176 patch->strided.tex_coords[0].data += 3 * sizeof(float);
1177 patch->strided.tex_coords[0].stride = vtxStride;
1178 }
1179
1180 return WINED3D_OK;
1181 }
Windows API implementation