1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
29 * This file implements the st_draw_vbo() function which is called from
30 * Mesa's VBO module. All point/line/triangle rendering is done through
31 * this function whether the user called glBegin/End, glDrawArrays,
32 * glDrawElements, glEvalMesh, or glCalList, etc.
34 * We basically convert the VBO's vertex attribute/array information into
35 * Gallium vertex state, bind the vertex buffer objects and call
36 * pipe->draw_elements(), pipe->draw_range_elements() or pipe->draw_arrays().
39 * Keith Whitwell <keith@tungstengraphics.com>
43 #include "main/imports.h"
44 #include "main/image.h"
45 #include "main/macros.h"
46 #include "shader/prog_uniform.h"
50 #include "st_context.h"
52 #include "st_cb_bufferobjects.h"
54 #include "st_program.h"
56 #include "pipe/p_context.h"
57 #include "pipe/p_defines.h"
58 #include "util/u_inlines.h"
59 #include "util/u_format.h"
60 #include "cso_cache/cso_context.h"
63 static GLuint double_types
[4] = {
64 PIPE_FORMAT_R64_FLOAT
,
65 PIPE_FORMAT_R64G64_FLOAT
,
66 PIPE_FORMAT_R64G64B64_FLOAT
,
67 PIPE_FORMAT_R64G64B64A64_FLOAT
70 static GLuint float_types
[4] = {
71 PIPE_FORMAT_R32_FLOAT
,
72 PIPE_FORMAT_R32G32_FLOAT
,
73 PIPE_FORMAT_R32G32B32_FLOAT
,
74 PIPE_FORMAT_R32G32B32A32_FLOAT
77 static GLuint uint_types_norm
[4] = {
78 PIPE_FORMAT_R32_UNORM
,
79 PIPE_FORMAT_R32G32_UNORM
,
80 PIPE_FORMAT_R32G32B32_UNORM
,
81 PIPE_FORMAT_R32G32B32A32_UNORM
84 static GLuint uint_types_scale
[4] = {
85 PIPE_FORMAT_R32_USCALED
,
86 PIPE_FORMAT_R32G32_USCALED
,
87 PIPE_FORMAT_R32G32B32_USCALED
,
88 PIPE_FORMAT_R32G32B32A32_USCALED
91 static GLuint int_types_norm
[4] = {
92 PIPE_FORMAT_R32_SNORM
,
93 PIPE_FORMAT_R32G32_SNORM
,
94 PIPE_FORMAT_R32G32B32_SNORM
,
95 PIPE_FORMAT_R32G32B32A32_SNORM
98 static GLuint int_types_scale
[4] = {
99 PIPE_FORMAT_R32_SSCALED
,
100 PIPE_FORMAT_R32G32_SSCALED
,
101 PIPE_FORMAT_R32G32B32_SSCALED
,
102 PIPE_FORMAT_R32G32B32A32_SSCALED
105 static GLuint ushort_types_norm
[4] = {
106 PIPE_FORMAT_R16_UNORM
,
107 PIPE_FORMAT_R16G16_UNORM
,
108 PIPE_FORMAT_R16G16B16_UNORM
,
109 PIPE_FORMAT_R16G16B16A16_UNORM
112 static GLuint ushort_types_scale
[4] = {
113 PIPE_FORMAT_R16_USCALED
,
114 PIPE_FORMAT_R16G16_USCALED
,
115 PIPE_FORMAT_R16G16B16_USCALED
,
116 PIPE_FORMAT_R16G16B16A16_USCALED
119 static GLuint short_types_norm
[4] = {
120 PIPE_FORMAT_R16_SNORM
,
121 PIPE_FORMAT_R16G16_SNORM
,
122 PIPE_FORMAT_R16G16B16_SNORM
,
123 PIPE_FORMAT_R16G16B16A16_SNORM
126 static GLuint short_types_scale
[4] = {
127 PIPE_FORMAT_R16_SSCALED
,
128 PIPE_FORMAT_R16G16_SSCALED
,
129 PIPE_FORMAT_R16G16B16_SSCALED
,
130 PIPE_FORMAT_R16G16B16A16_SSCALED
133 static GLuint ubyte_types_norm
[4] = {
134 PIPE_FORMAT_R8_UNORM
,
135 PIPE_FORMAT_R8G8_UNORM
,
136 PIPE_FORMAT_R8G8B8_UNORM
,
137 PIPE_FORMAT_R8G8B8A8_UNORM
140 static GLuint ubyte_types_scale
[4] = {
141 PIPE_FORMAT_R8_USCALED
,
142 PIPE_FORMAT_R8G8_USCALED
,
143 PIPE_FORMAT_R8G8B8_USCALED
,
144 PIPE_FORMAT_R8G8B8A8_USCALED
147 static GLuint byte_types_norm
[4] = {
148 PIPE_FORMAT_R8_SNORM
,
149 PIPE_FORMAT_R8G8_SNORM
,
150 PIPE_FORMAT_R8G8B8_SNORM
,
151 PIPE_FORMAT_R8G8B8A8_SNORM
154 static GLuint byte_types_scale
[4] = {
155 PIPE_FORMAT_R8_SSCALED
,
156 PIPE_FORMAT_R8G8_SSCALED
,
157 PIPE_FORMAT_R8G8B8_SSCALED
,
158 PIPE_FORMAT_R8G8B8A8_SSCALED
161 static GLuint fixed_types
[4] = {
162 PIPE_FORMAT_R32_FIXED
,
163 PIPE_FORMAT_R32G32_FIXED
,
164 PIPE_FORMAT_R32G32B32_FIXED
,
165 PIPE_FORMAT_R32G32B32A32_FIXED
171 * Return a PIPE_FORMAT_x for the given GL datatype and size.
174 st_pipe_vertex_format(GLenum type
, GLuint size
, GLenum format
,
175 GLboolean normalized
)
177 assert((type
>= GL_BYTE
&& type
<= GL_DOUBLE
) ||
181 assert(format
== GL_RGBA
|| format
== GL_BGRA
);
183 if (format
== GL_BGRA
) {
184 /* this is an odd-ball case */
185 assert(type
== GL_UNSIGNED_BYTE
);
187 return PIPE_FORMAT_A8R8G8B8_UNORM
;
192 case GL_DOUBLE
: return double_types
[size
-1];
193 case GL_FLOAT
: return float_types
[size
-1];
194 case GL_INT
: return int_types_norm
[size
-1];
195 case GL_SHORT
: return short_types_norm
[size
-1];
196 case GL_BYTE
: return byte_types_norm
[size
-1];
197 case GL_UNSIGNED_INT
: return uint_types_norm
[size
-1];
198 case GL_UNSIGNED_SHORT
: return ushort_types_norm
[size
-1];
199 case GL_UNSIGNED_BYTE
: return ubyte_types_norm
[size
-1];
200 case GL_FIXED
: return fixed_types
[size
-1];
201 default: assert(0); return 0;
206 case GL_DOUBLE
: return double_types
[size
-1];
207 case GL_FLOAT
: return float_types
[size
-1];
208 case GL_INT
: return int_types_scale
[size
-1];
209 case GL_SHORT
: return short_types_scale
[size
-1];
210 case GL_BYTE
: return byte_types_scale
[size
-1];
211 case GL_UNSIGNED_INT
: return uint_types_scale
[size
-1];
212 case GL_UNSIGNED_SHORT
: return ushort_types_scale
[size
-1];
213 case GL_UNSIGNED_BYTE
: return ubyte_types_scale
[size
-1];
214 case GL_FIXED
: return fixed_types
[size
-1];
215 default: assert(0); return 0;
218 return 0; /* silence compiler warning */
226 * Examine the active arrays to determine if we have interleaved
227 * vertex arrays all living in one VBO, or all living in user space.
228 * \param userSpace returns whether the arrays are in user space.
231 is_interleaved_arrays(const struct st_vertex_program
*vp
,
232 const struct st_vp_varient
*vpv
,
233 const struct gl_client_array
**arrays
,
234 GLboolean
*userSpace
)
237 const struct gl_buffer_object
*firstBufObj
= NULL
;
238 GLint firstStride
= -1;
239 GLuint num_client_arrays
= 0;
240 const GLubyte
*client_addr
= NULL
;
242 for (attr
= 0; attr
< vpv
->num_inputs
; attr
++) {
243 const GLuint mesaAttr
= vp
->index_to_input
[attr
];
244 const struct gl_buffer_object
*bufObj
= arrays
[mesaAttr
]->BufferObj
;
245 const GLsizei stride
= arrays
[mesaAttr
]->StrideB
; /* in bytes */
247 if (firstStride
< 0) {
248 firstStride
= stride
;
250 else if (firstStride
!= stride
) {
254 if (!bufObj
|| !bufObj
->Name
) {
256 /* Try to detect if the client-space arrays are
257 * "close" to each other.
260 client_addr
= arrays
[mesaAttr
]->Ptr
;
262 else if (abs(arrays
[mesaAttr
]->Ptr
- client_addr
) > firstStride
) {
263 /* arrays start too far apart */
267 else if (!firstBufObj
) {
268 firstBufObj
= bufObj
;
270 else if (bufObj
!= firstBufObj
) {
275 *userSpace
= (num_client_arrays
== vpv
->num_inputs
);
276 /* printf("user space: %d (%d %d)\n", (int) *userSpace,num_client_arrays,vp->num_inputs); */
283 * Compute the memory range occupied by the arrays.
286 get_arrays_bounds(const struct st_vertex_program
*vp
,
287 const struct st_vp_varient
*vpv
,
288 const struct gl_client_array
**arrays
,
290 const GLubyte
**low
, const GLubyte
**high
)
292 const GLubyte
*low_addr
= NULL
;
293 const GLubyte
*high_addr
= NULL
;
296 for (attr
= 0; attr
< vpv
->num_inputs
; attr
++) {
297 const GLuint mesaAttr
= vp
->index_to_input
[attr
];
298 const GLint stride
= arrays
[mesaAttr
]->StrideB
;
299 const GLubyte
*start
= arrays
[mesaAttr
]->Ptr
;
300 const unsigned sz
= (arrays
[mesaAttr
]->Size
*
301 _mesa_sizeof_type(arrays
[mesaAttr
]->Type
));
302 const GLubyte
*end
= start
+ (max_index
* stride
) + sz
;
309 low_addr
= MIN2(low_addr
, start
);
310 high_addr
= MAX2(high_addr
, end
);
320 * Set up for drawing interleaved arrays that all live in one VBO
321 * or all live in user space.
322 * \param vbuffer returns vertex buffer info
323 * \param velements returns vertex element info
326 setup_interleaved_attribs(GLcontext
*ctx
,
327 const struct st_vertex_program
*vp
,
328 const struct st_vp_varient
*vpv
,
329 const struct gl_client_array
**arrays
,
332 struct pipe_vertex_buffer
*vbuffer
,
333 struct pipe_vertex_element velements
[])
335 struct pipe_context
*pipe
= ctx
->st
->pipe
;
337 const GLubyte
*offset0
= NULL
;
339 for (attr
= 0; attr
< vpv
->num_inputs
; attr
++) {
340 const GLuint mesaAttr
= vp
->index_to_input
[attr
];
341 struct gl_buffer_object
*bufobj
= arrays
[mesaAttr
]->BufferObj
;
342 struct st_buffer_object
*stobj
= st_buffer_object(bufobj
);
343 GLsizei stride
= arrays
[mesaAttr
]->StrideB
;
345 /*printf("stobj %u = %p\n", attr, (void*)stobj);*/
348 const GLubyte
*low
, *high
;
350 get_arrays_bounds(vp
, vpv
, arrays
, max_index
, &low
, &high
);
351 /*printf("buffer range: %p %p %d\n", low, high, high-low);*/
356 pipe_user_buffer_create(pipe
->screen
, (void *) low
, high
- low
);
357 vbuffer
->buffer_offset
= 0;
360 vbuffer
->buffer
= NULL
;
361 pipe_buffer_reference(&vbuffer
->buffer
, stobj
->buffer
);
362 vbuffer
->buffer_offset
= pointer_to_offset(low
);
364 vbuffer
->stride
= stride
; /* in bytes */
365 vbuffer
->max_index
= max_index
;
368 velements
[attr
].src_offset
=
369 (unsigned) (arrays
[mesaAttr
]->Ptr
- offset0
);
370 velements
[attr
].instance_divisor
= 0;
371 velements
[attr
].vertex_buffer_index
= 0;
372 velements
[attr
].src_format
=
373 st_pipe_vertex_format(arrays
[mesaAttr
]->Type
,
374 arrays
[mesaAttr
]->Size
,
375 arrays
[mesaAttr
]->Format
,
376 arrays
[mesaAttr
]->Normalized
);
377 assert(velements
[attr
].src_format
);
383 * Set up a separate pipe_vertex_buffer and pipe_vertex_element for each
385 * \param vbuffer returns vertex buffer info
386 * \param velements returns vertex element info
389 setup_non_interleaved_attribs(GLcontext
*ctx
,
390 const struct st_vertex_program
*vp
,
391 const struct st_vp_varient
*vpv
,
392 const struct gl_client_array
**arrays
,
394 GLboolean
*userSpace
,
395 struct pipe_vertex_buffer vbuffer
[],
396 struct pipe_vertex_element velements
[])
398 struct pipe_context
*pipe
= ctx
->st
->pipe
;
401 for (attr
= 0; attr
< vpv
->num_inputs
; attr
++) {
402 const GLuint mesaAttr
= vp
->index_to_input
[attr
];
403 struct gl_buffer_object
*bufobj
= arrays
[mesaAttr
]->BufferObj
;
404 GLsizei stride
= arrays
[mesaAttr
]->StrideB
;
406 *userSpace
= GL_FALSE
;
408 if (bufobj
&& bufobj
->Name
) {
409 /* Attribute data is in a VBO.
410 * Recall that for VBOs, the gl_client_array->Ptr field is
411 * really an offset from the start of the VBO, not a pointer.
413 struct st_buffer_object
*stobj
= st_buffer_object(bufobj
);
414 assert(stobj
->buffer
);
415 /*printf("stobj %u = %p\n", attr, (void*) stobj);*/
417 vbuffer
[attr
].buffer
= NULL
;
418 pipe_buffer_reference(&vbuffer
[attr
].buffer
, stobj
->buffer
);
419 vbuffer
[attr
].buffer_offset
= pointer_to_offset(arrays
[mesaAttr
]->Ptr
);
420 velements
[attr
].src_offset
= 0;
423 /* attribute data is in user-space memory, not a VBO */
425 /*printf("user-space array %d stride %d\n", attr, stride);*/
427 *userSpace
= GL_TRUE
;
430 if (arrays
[mesaAttr
]->Ptr
) {
431 /* user's vertex array */
432 if (arrays
[mesaAttr
]->StrideB
) {
433 bytes
= arrays
[mesaAttr
]->StrideB
* (max_index
+ 1);
436 bytes
= arrays
[mesaAttr
]->Size
437 * _mesa_sizeof_type(arrays
[mesaAttr
]->Type
);
439 vbuffer
[attr
].buffer
= pipe_user_buffer_create(pipe
->screen
,
440 (void *) arrays
[mesaAttr
]->Ptr
, bytes
);
443 /* no array, use ctx->Current.Attrib[] value */
444 bytes
= sizeof(ctx
->Current
.Attrib
[0]);
445 vbuffer
[attr
].buffer
= pipe_user_buffer_create(pipe
->screen
,
446 (void *) ctx
->Current
.Attrib
[mesaAttr
], bytes
);
450 vbuffer
[attr
].buffer_offset
= 0;
451 velements
[attr
].src_offset
= 0;
454 assert(velements
[attr
].src_offset
<= 2048); /* 11-bit field */
456 /* common-case setup */
457 vbuffer
[attr
].stride
= stride
; /* in bytes */
458 vbuffer
[attr
].max_index
= max_index
;
459 velements
[attr
].instance_divisor
= 0;
460 velements
[attr
].vertex_buffer_index
= attr
;
461 velements
[attr
].src_format
462 = st_pipe_vertex_format(arrays
[mesaAttr
]->Type
,
463 arrays
[mesaAttr
]->Size
,
464 arrays
[mesaAttr
]->Format
,
465 arrays
[mesaAttr
]->Normalized
);
466 assert(velements
[attr
].src_format
);
473 * Prior to drawing, check that any uniforms referenced by the
474 * current shader have been set. If a uniform has not been set,
478 check_uniforms(GLcontext
*ctx
)
480 const struct gl_shader_program
*shProg
= ctx
->Shader
.CurrentProgram
;
481 if (shProg
&& shProg
->LinkStatus
) {
483 for (i
= 0; i
< shProg
->Uniforms
->NumUniforms
; i
++) {
484 const struct gl_uniform
*u
= &shProg
->Uniforms
->Uniforms
[i
];
485 if (!u
->Initialized
) {
487 "Using shader with uninitialized uniform: %s",
495 static unsigned translate_prim( GLcontext
*ctx
,
498 /* Avoid quadstrips if it's easy to do so:
500 if (prim
== GL_QUAD_STRIP
&&
501 ctx
->Light
.ShadeModel
!= GL_FLAT
&&
502 ctx
->Polygon
.FrontMode
== GL_FILL
&&
503 ctx
->Polygon
.BackMode
== GL_FILL
)
504 prim
= GL_TRIANGLE_STRIP
;
510 * This function gets plugged into the VBO module and is called when
511 * we have something to render.
512 * Basically, translate the information into the format expected by gallium.
515 st_draw_vbo(GLcontext
*ctx
,
516 const struct gl_client_array
**arrays
,
517 const struct _mesa_prim
*prims
,
519 const struct _mesa_index_buffer
*ib
,
520 GLboolean index_bounds_valid
,
524 struct pipe_context
*pipe
= ctx
->st
->pipe
;
525 const struct st_vertex_program
*vp
;
526 const struct st_vp_varient
*vpv
;
527 struct pipe_vertex_buffer vbuffer
[PIPE_MAX_SHADER_INPUTS
];
529 struct pipe_vertex_element velements
[PIPE_MAX_ATTRIBS
];
530 unsigned num_vbuffers
, num_velements
;
531 GLboolean userSpace
= GL_FALSE
;
532 GLboolean vertDataEdgeFlags
;
534 /* Mesa core state should have been validated already */
535 assert(ctx
->NewState
== 0x0);
537 /* Gallium probably doesn't want this in some cases. */
538 if (!index_bounds_valid
)
539 if (!vbo_all_varyings_in_vbos(arrays
))
540 vbo_get_minmax_index(ctx
, prims
, ib
, &min_index
, &max_index
);
542 /* sanity check for pointer arithmetic below */
543 assert(sizeof(arrays
[0]->Ptr
[0]) == 1);
545 vertDataEdgeFlags
= arrays
[VERT_ATTRIB_EDGEFLAG
]->BufferObj
&&
546 arrays
[VERT_ATTRIB_EDGEFLAG
]->BufferObj
->Name
;
547 if (vertDataEdgeFlags
!= ctx
->st
->vertdata_edgeflags
) {
548 ctx
->st
->vertdata_edgeflags
= vertDataEdgeFlags
;
549 ctx
->st
->dirty
.st
|= ST_NEW_EDGEFLAGS_DATA
;
552 st_validate_state(ctx
->st
);
554 /* must get these after state validation! */
556 vpv
= ctx
->st
->vp_varient
;
559 if (MESA_VERBOSE
& VERBOSE_GLSL
) {
563 (void) check_uniforms
;
566 memset(velements
, 0, sizeof(struct pipe_vertex_element
) * vpv
->num_inputs
);
568 * Setup the vbuffer[] and velements[] arrays.
570 if (is_interleaved_arrays(vp
, vpv
, arrays
, &userSpace
)) {
571 /*printf("Draw interleaved\n");*/
572 setup_interleaved_attribs(ctx
, vp
, vpv
, arrays
, max_index
, userSpace
,
575 num_velements
= vpv
->num_inputs
;
576 if (num_velements
== 0)
580 /*printf("Draw non-interleaved\n");*/
581 setup_non_interleaved_attribs(ctx
, vp
, vpv
, arrays
, max_index
,
582 &userSpace
, vbuffer
, velements
);
583 num_vbuffers
= vpv
->num_inputs
;
584 num_velements
= vpv
->num_inputs
;
590 for (i
= 0; i
< num_vbuffers
; i
++) {
591 printf("buffers[%d].stride = %u\n", i
, vbuffer
[i
].stride
);
592 printf("buffers[%d].max_index = %u\n", i
, vbuffer
[i
].max_index
);
593 printf("buffers[%d].buffer_offset = %u\n", i
, vbuffer
[i
].buffer_offset
);
594 printf("buffers[%d].buffer = %p\n", i
, (void*) vbuffer
[i
].buffer
);
596 for (i
= 0; i
< num_velements
; i
++) {
597 printf("vlements[%d].vbuffer_index = %u\n", i
, velements
[i
].vertex_buffer_index
);
598 printf("vlements[%d].src_offset = %u\n", i
, velements
[i
].src_offset
);
599 printf("vlements[%d].format = %s\n", i
, util_format_name(velements
[i
].src_format
));
604 pipe
->set_vertex_buffers(pipe
, num_vbuffers
, vbuffer
);
605 cso_set_vertex_elements(ctx
->st
->cso_context
, num_velements
, velements
);
607 if (num_vbuffers
== 0 || num_velements
== 0)
610 /* do actual drawing */
612 /* indexed primitive */
613 struct gl_buffer_object
*bufobj
= ib
->obj
;
614 struct pipe_buffer
*indexBuf
= NULL
;
615 unsigned indexSize
, indexOffset
, i
;
619 case GL_UNSIGNED_INT
:
622 case GL_UNSIGNED_SHORT
:
625 case GL_UNSIGNED_BYTE
:
633 /* get/create the index buffer object */
634 if (bufobj
&& bufobj
->Name
) {
635 /* elements/indexes are in a real VBO */
636 struct st_buffer_object
*stobj
= st_buffer_object(bufobj
);
637 pipe_buffer_reference(&indexBuf
, stobj
->buffer
);
638 indexOffset
= pointer_to_offset(ib
->ptr
) / indexSize
;
641 /* element/indicies are in user space memory */
642 indexBuf
= pipe_user_buffer_create(pipe
->screen
, (void *) ib
->ptr
,
643 ib
->count
* indexSize
);
648 if (pipe
->draw_range_elements
&& min_index
!= ~0 && max_index
!= ~0) {
649 /* XXX: exercise temporary path to pass min/max directly
650 * through to driver & draw module. These interfaces still
651 * need a bit of work...
653 for (i
= 0; i
< nr_prims
; i
++) {
654 prim
= translate_prim( ctx
, prims
[i
].mode
);
656 pipe
->draw_range_elements(pipe
, indexBuf
, indexSize
,
657 min_index
, max_index
, prim
,
658 prims
[i
].start
+ indexOffset
, prims
[i
].count
);
662 for (i
= 0; i
< nr_prims
; i
++) {
663 prim
= translate_prim( ctx
, prims
[i
].mode
);
665 pipe
->draw_elements(pipe
, indexBuf
, indexSize
,
667 prims
[i
].start
+ indexOffset
, prims
[i
].count
);
671 pipe_buffer_reference(&indexBuf
, NULL
);
678 for (i
= 0; i
< nr_prims
; i
++) {
679 prim
= translate_prim( ctx
, prims
[i
].mode
);
681 pipe
->draw_arrays(pipe
, prim
, prims
[i
].start
, prims
[i
].count
);
685 /* unreference buffers (frees wrapped user-space buffer objects) */
686 for (attr
= 0; attr
< num_vbuffers
; attr
++) {
687 pipe_buffer_reference(&vbuffer
[attr
].buffer
, NULL
);
688 assert(!vbuffer
[attr
].buffer
);
693 pipe
->set_vertex_buffers(pipe
, 0, NULL
);
698 void st_init_draw( struct st_context
*st
)
700 GLcontext
*ctx
= st
->ctx
;
702 vbo_set_draw_func(ctx
, st_draw_vbo
);
706 void st_destroy_draw( struct st_context
*st
)