1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
|
/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/*
* This file implements the st_draw_vbo() function which is called from
* Mesa's VBO module. All point/line/triangle rendering is done through
* this function whether the user called glBegin/End, glDrawArrays,
* glDrawElements, glEvalMesh, or glCalList, etc.
*
* We basically convert the VBO's vertex attribute/array information into
* Gallium vertex state, bind the vertex buffer objects and call
* pipe->draw_elements(), pipe->draw_range_elements() or pipe->draw_arrays().
*
* Authors:
* Keith Whitwell <keith@tungstengraphics.com>
*/
#include "main/imports.h"
#include "main/image.h"
#include "main/macros.h"
#include "shader/prog_uniform.h"
#include "vbo/vbo.h"
#include "st_context.h"
#include "st_atom.h"
#include "st_cb_bufferobjects.h"
#include "st_draw.h"
#include "st_program.h"
#include "pipe/p_context.h"
#include "pipe/p_defines.h"
#include "pipe/p_inlines.h"
static GLuint double_types[4] = {
PIPE_FORMAT_R64_FLOAT,
PIPE_FORMAT_R64G64_FLOAT,
PIPE_FORMAT_R64G64B64_FLOAT,
PIPE_FORMAT_R64G64B64A64_FLOAT
};
static GLuint float_types[4] = {
PIPE_FORMAT_R32_FLOAT,
PIPE_FORMAT_R32G32_FLOAT,
PIPE_FORMAT_R32G32B32_FLOAT,
PIPE_FORMAT_R32G32B32A32_FLOAT
};
static GLuint uint_types_norm[4] = {
PIPE_FORMAT_R32_UNORM,
PIPE_FORMAT_R32G32_UNORM,
PIPE_FORMAT_R32G32B32_UNORM,
PIPE_FORMAT_R32G32B32A32_UNORM
};
static GLuint uint_types_scale[4] = {
PIPE_FORMAT_R32_USCALED,
PIPE_FORMAT_R32G32_USCALED,
PIPE_FORMAT_R32G32B32_USCALED,
PIPE_FORMAT_R32G32B32A32_USCALED
};
static GLuint int_types_norm[4] = {
PIPE_FORMAT_R32_SNORM,
PIPE_FORMAT_R32G32_SNORM,
PIPE_FORMAT_R32G32B32_SNORM,
PIPE_FORMAT_R32G32B32A32_SNORM
};
static GLuint int_types_scale[4] = {
PIPE_FORMAT_R32_SSCALED,
PIPE_FORMAT_R32G32_SSCALED,
PIPE_FORMAT_R32G32B32_SSCALED,
PIPE_FORMAT_R32G32B32A32_SSCALED
};
static GLuint ushort_types_norm[4] = {
PIPE_FORMAT_R16_UNORM,
PIPE_FORMAT_R16G16_UNORM,
PIPE_FORMAT_R16G16B16_UNORM,
PIPE_FORMAT_R16G16B16A16_UNORM
};
static GLuint ushort_types_scale[4] = {
PIPE_FORMAT_R16_USCALED,
PIPE_FORMAT_R16G16_USCALED,
PIPE_FORMAT_R16G16B16_USCALED,
PIPE_FORMAT_R16G16B16A16_USCALED
};
static GLuint short_types_norm[4] = {
PIPE_FORMAT_R16_SNORM,
PIPE_FORMAT_R16G16_SNORM,
PIPE_FORMAT_R16G16B16_SNORM,
PIPE_FORMAT_R16G16B16A16_SNORM
};
static GLuint short_types_scale[4] = {
PIPE_FORMAT_R16_SSCALED,
PIPE_FORMAT_R16G16_SSCALED,
PIPE_FORMAT_R16G16B16_SSCALED,
PIPE_FORMAT_R16G16B16A16_SSCALED
};
static GLuint ubyte_types_norm[4] = {
PIPE_FORMAT_R8_UNORM,
PIPE_FORMAT_R8G8_UNORM,
PIPE_FORMAT_R8G8B8_UNORM,
PIPE_FORMAT_R8G8B8A8_UNORM
};
static GLuint ubyte_types_scale[4] = {
PIPE_FORMAT_R8_USCALED,
PIPE_FORMAT_R8G8_USCALED,
PIPE_FORMAT_R8G8B8_USCALED,
PIPE_FORMAT_R8G8B8A8_USCALED
};
static GLuint byte_types_norm[4] = {
PIPE_FORMAT_R8_SNORM,
PIPE_FORMAT_R8G8_SNORM,
PIPE_FORMAT_R8G8B8_SNORM,
PIPE_FORMAT_R8G8B8A8_SNORM
};
static GLuint byte_types_scale[4] = {
PIPE_FORMAT_R8_SSCALED,
PIPE_FORMAT_R8G8_SSCALED,
PIPE_FORMAT_R8G8B8_SSCALED,
PIPE_FORMAT_R8G8B8A8_SSCALED
};
static GLuint fixed_types[4] = {
PIPE_FORMAT_R32_FIXED,
PIPE_FORMAT_R32G32_FIXED,
PIPE_FORMAT_R32G32B32_FIXED,
PIPE_FORMAT_R32G32B32A32_FIXED
};
/**
* Return a PIPE_FORMAT_x for the given GL datatype and size.
*/
GLuint
st_pipe_vertex_format(GLenum type, GLuint size, GLenum format,
GLboolean normalized)
{
assert((type >= GL_BYTE && type <= GL_DOUBLE) ||
type == GL_FIXED);
assert(size >= 1);
assert(size <= 4);
assert(format == GL_RGBA || format == GL_BGRA);
if (format == GL_BGRA) {
/* this is an odd-ball case */
assert(type == GL_UNSIGNED_BYTE);
assert(normalized);
return PIPE_FORMAT_B8G8R8A8_UNORM;
}
if (normalized) {
switch (type) {
case GL_DOUBLE: return double_types[size-1];
case GL_FLOAT: return float_types[size-1];
case GL_INT: return int_types_norm[size-1];
case GL_SHORT: return short_types_norm[size-1];
case GL_BYTE: return byte_types_norm[size-1];
case GL_UNSIGNED_INT: return uint_types_norm[size-1];
case GL_UNSIGNED_SHORT: return ushort_types_norm[size-1];
case GL_UNSIGNED_BYTE: return ubyte_types_norm[size-1];
case GL_FIXED: return fixed_types[size-1];
default: assert(0); return 0;
}
}
else {
switch (type) {
case GL_DOUBLE: return double_types[size-1];
case GL_FLOAT: return float_types[size-1];
case GL_INT: return int_types_scale[size-1];
case GL_SHORT: return short_types_scale[size-1];
case GL_BYTE: return byte_types_scale[size-1];
case GL_UNSIGNED_INT: return uint_types_scale[size-1];
case GL_UNSIGNED_SHORT: return ushort_types_scale[size-1];
case GL_UNSIGNED_BYTE: return ubyte_types_scale[size-1];
case GL_FIXED: return fixed_types[size-1];
default: assert(0); return 0;
}
}
return 0; /* silence compiler warning */
}
/**
* Examine the active arrays to determine if we have interleaved
* vertex arrays all living in one VBO, or all living in user space.
* \param userSpace returns whether the arrays are in user space.
*/
static GLboolean
is_interleaved_arrays(const struct st_vertex_program *vp,
const struct gl_client_array **arrays,
GLboolean *userSpace)
{
GLuint attr;
const struct gl_buffer_object *firstBufObj = NULL;
GLint firstStride = -1;
GLuint num_client_arrays = 0;
const GLubyte *client_addr = NULL;
for (attr = 0; attr < vp->num_inputs; attr++) {
const GLuint mesaAttr = vp->index_to_input[attr];
const struct gl_buffer_object *bufObj = arrays[mesaAttr]->BufferObj;
const GLsizei stride = arrays[mesaAttr]->StrideB; /* in bytes */
if (firstStride < 0) {
firstStride = stride;
}
else if (firstStride != stride) {
return GL_FALSE;
}
if (!bufObj || !bufObj->Name) {
num_client_arrays++;
/* Try to detect if the client-space arrays are
* "close" to each other.
*/
if (!client_addr) {
client_addr = arrays[mesaAttr]->Ptr;
}
else if (abs(arrays[mesaAttr]->Ptr - client_addr) > firstStride) {
/* arrays start too far apart */
return GL_FALSE;
}
}
else if (!firstBufObj) {
firstBufObj = bufObj;
}
else if (bufObj != firstBufObj) {
return GL_FALSE;
}
}
*userSpace = (num_client_arrays == vp->num_inputs);
/* printf("user space: %d (%d %d)\n", (int) *userSpace,num_client_arrays,vp->num_inputs); */
return GL_TRUE;
}
/**
* Compute the memory range occupied by the arrays.
*/
static void
get_arrays_bounds(const struct st_vertex_program *vp,
const struct gl_client_array **arrays,
GLuint max_index,
const GLubyte **low, const GLubyte **high)
{
const GLubyte *low_addr = NULL;
const GLubyte *high_addr = NULL;
GLuint attr;
for (attr = 0; attr < vp->num_inputs; attr++) {
const GLuint mesaAttr = vp->index_to_input[attr];
const GLint stride = arrays[mesaAttr]->StrideB;
const GLubyte *start = arrays[mesaAttr]->Ptr;
const unsigned sz = (arrays[mesaAttr]->Size *
_mesa_sizeof_type(arrays[mesaAttr]->Type));
const GLubyte *end = start + (max_index * stride) + sz;
if (attr == 0) {
low_addr = start;
high_addr = end;
}
else {
low_addr = MIN2(low_addr, start);
high_addr = MAX2(high_addr, end);
}
}
*low = low_addr;
*high = high_addr;
}
/**
* Set up for drawing interleaved arrays that all live in one VBO
* or all live in user space.
* \param vbuffer returns vertex buffer info
* \param velements returns vertex element info
*/
static void
setup_interleaved_attribs(GLcontext *ctx,
const struct st_vertex_program *vp,
const struct gl_client_array **arrays,
GLuint max_index,
GLboolean userSpace,
struct pipe_vertex_buffer *vbuffer,
struct pipe_vertex_element velements[])
{
struct pipe_context *pipe = ctx->st->pipe;
GLuint attr;
const GLubyte *offset0;
for (attr = 0; attr < vp->num_inputs; attr++) {
const GLuint mesaAttr = vp->index_to_input[attr];
struct gl_buffer_object *bufobj = arrays[mesaAttr]->BufferObj;
struct st_buffer_object *stobj = st_buffer_object(bufobj);
GLsizei stride = arrays[mesaAttr]->StrideB;
/*printf("stobj %u = %p\n", attr, (void*)stobj);*/
if (attr == 0) {
const GLubyte *low, *high;
get_arrays_bounds(vp, arrays, max_index, &low, &high);
/*printf("buffer range: %p %p %d\n", low, high, high-low);*/
offset0 = low;
if (userSpace) {
vbuffer->buffer =
pipe_user_buffer_create(pipe->screen, (void *) low, high - low);
vbuffer->buffer_offset = 0;
}
else {
vbuffer->buffer = NULL;
pipe_buffer_reference(&vbuffer->buffer, stobj->buffer);
vbuffer->buffer_offset = pointer_to_offset(low);
}
vbuffer->stride = stride; /* in bytes */
vbuffer->max_index = max_index;
}
velements[attr].src_offset =
(unsigned) (arrays[mesaAttr]->Ptr - offset0);
velements[attr].vertex_buffer_index = 0;
velements[attr].nr_components = arrays[mesaAttr]->Size;
velements[attr].src_format =
st_pipe_vertex_format(arrays[mesaAttr]->Type,
arrays[mesaAttr]->Size,
arrays[mesaAttr]->Format,
arrays[mesaAttr]->Normalized);
assert(velements[attr].src_format);
}
}
/**
* Set up a separate pipe_vertex_buffer and pipe_vertex_element for each
* vertex attribute.
* \param vbuffer returns vertex buffer info
* \param velements returns vertex element info
*/
static void
setup_non_interleaved_attribs(GLcontext *ctx,
const struct st_vertex_program *vp,
const struct gl_client_array **arrays,
GLuint max_index,
GLboolean *userSpace,
struct pipe_vertex_buffer vbuffer[],
struct pipe_vertex_element velements[])
{
struct pipe_context *pipe = ctx->st->pipe;
GLuint attr;
for (attr = 0; attr < vp->num_inputs; attr++) {
const GLuint mesaAttr = vp->index_to_input[attr];
struct gl_buffer_object *bufobj = arrays[mesaAttr]->BufferObj;
GLsizei stride = arrays[mesaAttr]->StrideB;
*userSpace = GL_FALSE;
if (bufobj && bufobj->Name) {
/* Attribute data is in a VBO.
* Recall that for VBOs, the gl_client_array->Ptr field is
* really an offset from the start of the VBO, not a pointer.
*/
struct st_buffer_object *stobj = st_buffer_object(bufobj);
assert(stobj->buffer);
/*printf("stobj %u = %p\n", attr, (void*) stobj);*/
vbuffer[attr].buffer = NULL;
pipe_buffer_reference(&vbuffer[attr].buffer, stobj->buffer);
vbuffer[attr].buffer_offset = pointer_to_offset(arrays[mesaAttr]->Ptr);
velements[attr].src_offset = 0;
}
else {
/* attribute data is in user-space memory, not a VBO */
uint bytes;
/*printf("user-space array %d stride %d\n", attr, stride);*/
*userSpace = GL_TRUE;
/* wrap user data */
if (arrays[mesaAttr]->Ptr) {
/* user's vertex array */
if (arrays[mesaAttr]->StrideB) {
bytes = arrays[mesaAttr]->StrideB * (max_index + 1);
}
else {
bytes = arrays[mesaAttr]->Size
* _mesa_sizeof_type(arrays[mesaAttr]->Type);
}
vbuffer[attr].buffer = pipe_user_buffer_create(pipe->screen,
(void *) arrays[mesaAttr]->Ptr, bytes);
}
else {
/* no array, use ctx->Current.Attrib[] value */
bytes = sizeof(ctx->Current.Attrib[0]);
vbuffer[attr].buffer = pipe_user_buffer_create(pipe->screen,
(void *) ctx->Current.Attrib[mesaAttr], bytes);
stride = 0;
}
vbuffer[attr].buffer_offset = 0;
velements[attr].src_offset = 0;
}
assert(velements[attr].src_offset <= 2048); /* 11-bit field */
/* common-case setup */
vbuffer[attr].stride = stride; /* in bytes */
vbuffer[attr].max_index = max_index;
velements[attr].vertex_buffer_index = attr;
velements[attr].nr_components = arrays[mesaAttr]->Size;
velements[attr].src_format
= st_pipe_vertex_format(arrays[mesaAttr]->Type,
arrays[mesaAttr]->Size,
arrays[mesaAttr]->Format,
arrays[mesaAttr]->Normalized);
assert(velements[attr].src_format);
}
}
/**
* Prior to drawing, check that any uniforms referenced by the
* current shader have been set. If a uniform has not been set,
* issue a warning.
*/
static void
check_uniforms(GLcontext *ctx)
{
const struct gl_shader_program *shProg = ctx->Shader.CurrentProgram;
if (shProg && shProg->LinkStatus) {
GLuint i;
for (i = 0; i < shProg->Uniforms->NumUniforms; i++) {
const struct gl_uniform *u = &shProg->Uniforms->Uniforms[i];
if (!u->Initialized) {
_mesa_warning(ctx,
"Using shader with uninitialized uniform: %s",
u->Name);
}
}
}
}
/**
* This function gets plugged into the VBO module and is called when
* we have something to render.
* Basically, translate the information into the format expected by gallium.
*/
void
st_draw_vbo(GLcontext *ctx,
const struct gl_client_array **arrays,
const struct _mesa_prim *prims,
GLuint nr_prims,
const struct _mesa_index_buffer *ib,
GLboolean index_bounds_valid,
GLuint min_index,
GLuint max_index)
{
struct pipe_context *pipe = ctx->st->pipe;
const struct st_vertex_program *vp;
const struct pipe_shader_state *vs;
struct pipe_vertex_buffer vbuffer[PIPE_MAX_SHADER_INPUTS];
GLuint attr;
struct pipe_vertex_element velements[PIPE_MAX_ATTRIBS];
unsigned num_vbuffers, num_velements;
GLboolean userSpace;
/* Gallium probably doesn't want this in some cases. */
if (!index_bounds_valid)
vbo_get_minmax_index(ctx, prims, ib, &min_index, &max_index);
/* sanity check for pointer arithmetic below */
assert(sizeof(arrays[0]->Ptr[0]) == 1);
st_validate_state(ctx->st);
/* must get these after state validation! */
vp = ctx->st->vp;
vs = &ctx->st->vp_varient->state;
#if 0
if (MESA_VERBOSE & VERBOSE_GLSL) {
check_uniforms(ctx);
}
#else
(void) check_uniforms;
#endif
/*
* Setup the vbuffer[] and velements[] arrays.
*/
if (is_interleaved_arrays(vp, arrays, &userSpace)) {
/*printf("Draw interleaved\n");*/
setup_interleaved_attribs(ctx, vp, arrays, max_index, userSpace,
vbuffer, velements);
num_vbuffers = 1;
num_velements = vp->num_inputs;
if (num_velements == 0)
num_vbuffers = 0;
}
else {
/*printf("Draw non-interleaved\n");*/
setup_non_interleaved_attribs(ctx, vp, arrays, max_index,
&userSpace, vbuffer, velements);
num_vbuffers = vp->num_inputs;
num_velements = vp->num_inputs;
}
#if 0
{
GLuint i;
for (i = 0; i < num_vbuffers; i++) {
printf("buffers[%d].stride = %u\n", i, vbuffer[i].stride);
printf("buffers[%d].max_index = %u\n", i, vbuffer[i].max_index);
printf("buffers[%d].buffer_offset = %u\n", i, vbuffer[i].buffer_offset);
printf("buffers[%d].buffer = %p\n", i, (void*) vbuffer[i].buffer);
}
for (i = 0; i < num_velements; i++) {
printf("vlements[%d].vbuffer_index = %u\n", i, velements[i].vertex_buffer_index);
printf("vlements[%d].src_offset = %u\n", i, velements[i].src_offset);
printf("vlements[%d].nr_comps = %u\n", i, velements[i].nr_components);
printf("vlements[%d].format = %s\n", i, pf_name(velements[i].src_format));
}
}
#endif
pipe->set_vertex_buffers(pipe, num_vbuffers, vbuffer);
pipe->set_vertex_elements(pipe, num_velements, velements);
if (num_vbuffers == 0 || num_velements == 0)
return;
/* do actual drawing */
if (ib) {
/* indexed primitive */
struct gl_buffer_object *bufobj = ib->obj;
struct pipe_buffer *indexBuf = NULL;
unsigned indexSize, indexOffset, i;
switch (ib->type) {
case GL_UNSIGNED_INT:
indexSize = 4;
break;
case GL_UNSIGNED_SHORT:
indexSize = 2;
break;
case GL_UNSIGNED_BYTE:
indexSize = 1;
break;
default:
assert(0);
return;
}
/* get/create the index buffer object */
if (bufobj && bufobj->Name) {
/* elements/indexes are in a real VBO */
struct st_buffer_object *stobj = st_buffer_object(bufobj);
pipe_buffer_reference(&indexBuf, stobj->buffer);
indexOffset = pointer_to_offset(ib->ptr) / indexSize;
}
else {
/* element/indicies are in user space memory */
indexBuf = pipe_user_buffer_create(pipe->screen, (void *) ib->ptr,
ib->count * indexSize);
indexOffset = 0;
}
/* draw */
if (nr_prims == 1 && pipe->draw_range_elements != NULL) {
i = 0;
/* XXX: exercise temporary path to pass min/max directly
* through to driver & draw module. These interfaces still
* need a bit of work...
*/
pipe->draw_range_elements(pipe, indexBuf, indexSize,
min_index,
max_index,
prims[i].mode,
prims[i].start + indexOffset, prims[i].count);
}
else {
for (i = 0; i < nr_prims; i++) {
pipe->draw_elements(pipe, indexBuf, indexSize,
prims[i].mode,
prims[i].start + indexOffset, prims[i].count);
}
}
pipe_buffer_reference(&indexBuf, NULL);
}
else {
/* non-indexed */
GLuint i;
for (i = 0; i < nr_prims; i++) {
pipe->draw_arrays(pipe, prims[i].mode, prims[i].start, prims[i].count);
}
}
/* unreference buffers (frees wrapped user-space buffer objects) */
for (attr = 0; attr < num_vbuffers; attr++) {
pipe_buffer_reference(&vbuffer[attr].buffer, NULL);
assert(!vbuffer[attr].buffer);
}
if (userSpace)
{
pipe->set_vertex_buffers(pipe, 0, NULL);
}
}
void st_init_draw( struct st_context *st )
{
GLcontext *ctx = st->ctx;
vbo_set_draw_func(ctx, st_draw_vbo);
}
void st_destroy_draw( struct st_context *st )
{
}
|