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 "pipe/p_inlines.h"
61 static GLuint double_types
[4] = {
62 PIPE_FORMAT_R64_FLOAT
,
63 PIPE_FORMAT_R64G64_FLOAT
,
64 PIPE_FORMAT_R64G64B64_FLOAT
,
65 PIPE_FORMAT_R64G64B64A64_FLOAT
68 static GLuint float_types
[4] = {
69 PIPE_FORMAT_R32_FLOAT
,
70 PIPE_FORMAT_R32G32_FLOAT
,
71 PIPE_FORMAT_R32G32B32_FLOAT
,
72 PIPE_FORMAT_R32G32B32A32_FLOAT
75 static GLuint uint_types_norm
[4] = {
76 PIPE_FORMAT_R32_UNORM
,
77 PIPE_FORMAT_R32G32_UNORM
,
78 PIPE_FORMAT_R32G32B32_UNORM
,
79 PIPE_FORMAT_R32G32B32A32_UNORM
82 static GLuint uint_types_scale
[4] = {
83 PIPE_FORMAT_R32_USCALED
,
84 PIPE_FORMAT_R32G32_USCALED
,
85 PIPE_FORMAT_R32G32B32_USCALED
,
86 PIPE_FORMAT_R32G32B32A32_USCALED
89 static GLuint int_types_norm
[4] = {
90 PIPE_FORMAT_R32_SNORM
,
91 PIPE_FORMAT_R32G32_SNORM
,
92 PIPE_FORMAT_R32G32B32_SNORM
,
93 PIPE_FORMAT_R32G32B32A32_SNORM
96 static GLuint int_types_scale
[4] = {
97 PIPE_FORMAT_R32_SSCALED
,
98 PIPE_FORMAT_R32G32_SSCALED
,
99 PIPE_FORMAT_R32G32B32_SSCALED
,
100 PIPE_FORMAT_R32G32B32A32_SSCALED
103 static GLuint ushort_types_norm
[4] = {
104 PIPE_FORMAT_R16_UNORM
,
105 PIPE_FORMAT_R16G16_UNORM
,
106 PIPE_FORMAT_R16G16B16_UNORM
,
107 PIPE_FORMAT_R16G16B16A16_UNORM
110 static GLuint ushort_types_scale
[4] = {
111 PIPE_FORMAT_R16_USCALED
,
112 PIPE_FORMAT_R16G16_USCALED
,
113 PIPE_FORMAT_R16G16B16_USCALED
,
114 PIPE_FORMAT_R16G16B16A16_USCALED
117 static GLuint short_types_norm
[4] = {
118 PIPE_FORMAT_R16_SNORM
,
119 PIPE_FORMAT_R16G16_SNORM
,
120 PIPE_FORMAT_R16G16B16_SNORM
,
121 PIPE_FORMAT_R16G16B16A16_SNORM
124 static GLuint short_types_scale
[4] = {
125 PIPE_FORMAT_R16_SSCALED
,
126 PIPE_FORMAT_R16G16_SSCALED
,
127 PIPE_FORMAT_R16G16B16_SSCALED
,
128 PIPE_FORMAT_R16G16B16A16_SSCALED
131 static GLuint ubyte_types_norm
[4] = {
132 PIPE_FORMAT_R8_UNORM
,
133 PIPE_FORMAT_R8G8_UNORM
,
134 PIPE_FORMAT_R8G8B8_UNORM
,
135 PIPE_FORMAT_R8G8B8A8_UNORM
138 static GLuint ubyte_types_scale
[4] = {
139 PIPE_FORMAT_R8_USCALED
,
140 PIPE_FORMAT_R8G8_USCALED
,
141 PIPE_FORMAT_R8G8B8_USCALED
,
142 PIPE_FORMAT_R8G8B8A8_USCALED
145 static GLuint byte_types_norm
[4] = {
146 PIPE_FORMAT_R8_SNORM
,
147 PIPE_FORMAT_R8G8_SNORM
,
148 PIPE_FORMAT_R8G8B8_SNORM
,
149 PIPE_FORMAT_R8G8B8A8_SNORM
152 static GLuint byte_types_scale
[4] = {
153 PIPE_FORMAT_R8_SSCALED
,
154 PIPE_FORMAT_R8G8_SSCALED
,
155 PIPE_FORMAT_R8G8B8_SSCALED
,
156 PIPE_FORMAT_R8G8B8A8_SSCALED
159 static GLuint fixed_types
[4] = {
160 PIPE_FORMAT_R32_FIXED
,
161 PIPE_FORMAT_R32G32_FIXED
,
162 PIPE_FORMAT_R32G32B32_FIXED
,
163 PIPE_FORMAT_R32G32B32A32_FIXED
169 * Return a PIPE_FORMAT_x for the given GL datatype and size.
172 st_pipe_vertex_format(GLenum type
, GLuint size
, GLenum format
,
173 GLboolean normalized
)
175 assert((type
>= GL_BYTE
&& type
<= GL_DOUBLE
) ||
179 assert(format
== GL_RGBA
|| format
== GL_BGRA
);
181 if (format
== GL_BGRA
) {
182 /* this is an odd-ball case */
183 assert(type
== GL_UNSIGNED_BYTE
);
185 return PIPE_FORMAT_B8G8R8A8_UNORM
;
190 case GL_DOUBLE
: return double_types
[size
-1];
191 case GL_FLOAT
: return float_types
[size
-1];
192 case GL_INT
: return int_types_norm
[size
-1];
193 case GL_SHORT
: return short_types_norm
[size
-1];
194 case GL_BYTE
: return byte_types_norm
[size
-1];
195 case GL_UNSIGNED_INT
: return uint_types_norm
[size
-1];
196 case GL_UNSIGNED_SHORT
: return ushort_types_norm
[size
-1];
197 case GL_UNSIGNED_BYTE
: return ubyte_types_norm
[size
-1];
198 case GL_FIXED
: return fixed_types
[size
-1];
199 default: assert(0); return 0;
204 case GL_DOUBLE
: return double_types
[size
-1];
205 case GL_FLOAT
: return float_types
[size
-1];
206 case GL_INT
: return int_types_scale
[size
-1];
207 case GL_SHORT
: return short_types_scale
[size
-1];
208 case GL_BYTE
: return byte_types_scale
[size
-1];
209 case GL_UNSIGNED_INT
: return uint_types_scale
[size
-1];
210 case GL_UNSIGNED_SHORT
: return ushort_types_scale
[size
-1];
211 case GL_UNSIGNED_BYTE
: return ubyte_types_scale
[size
-1];
212 case GL_FIXED
: return fixed_types
[size
-1];
213 default: assert(0); return 0;
216 return 0; /* silence compiler warning */
224 * Examine the active arrays to determine if we have interleaved
225 * vertex arrays all living in one VBO, or all living in user space.
226 * \param userSpace returns whether the arrays are in user space.
229 is_interleaved_arrays(const struct st_vertex_program
*vp
,
230 const struct st_vp_varient
*vpv
,
231 const struct gl_client_array
**arrays
,
232 GLboolean
*userSpace
)
235 const struct gl_buffer_object
*firstBufObj
= NULL
;
236 GLint firstStride
= -1;
237 GLuint num_client_arrays
= 0;
238 const GLubyte
*client_addr
= NULL
;
240 for (attr
= 0; attr
< vpv
->num_inputs
; attr
++) {
241 const GLuint mesaAttr
= vp
->index_to_input
[attr
];
242 const struct gl_buffer_object
*bufObj
= arrays
[mesaAttr
]->BufferObj
;
243 const GLsizei stride
= arrays
[mesaAttr
]->StrideB
; /* in bytes */
245 if (firstStride
< 0) {
246 firstStride
= stride
;
248 else if (firstStride
!= stride
) {
252 if (!bufObj
|| !bufObj
->Name
) {
254 /* Try to detect if the client-space arrays are
255 * "close" to each other.
258 client_addr
= arrays
[mesaAttr
]->Ptr
;
260 else if (abs(arrays
[mesaAttr
]->Ptr
- client_addr
) > firstStride
) {
261 /* arrays start too far apart */
265 else if (!firstBufObj
) {
266 firstBufObj
= bufObj
;
268 else if (bufObj
!= firstBufObj
) {
273 *userSpace
= (num_client_arrays
== vpv
->num_inputs
);
274 /* printf("user space: %d (%d %d)\n", (int) *userSpace,num_client_arrays,vp->num_inputs); */
281 * Compute the memory range occupied by the arrays.
284 get_arrays_bounds(const struct st_vertex_program
*vp
,
285 const struct st_vp_varient
*vpv
,
286 const struct gl_client_array
**arrays
,
288 const GLubyte
**low
, const GLubyte
**high
)
290 const GLubyte
*low_addr
= NULL
;
291 const GLubyte
*high_addr
= NULL
;
294 for (attr
= 0; attr
< vpv
->num_inputs
; attr
++) {
295 const GLuint mesaAttr
= vp
->index_to_input
[attr
];
296 const GLint stride
= arrays
[mesaAttr
]->StrideB
;
297 const GLubyte
*start
= arrays
[mesaAttr
]->Ptr
;
298 const unsigned sz
= (arrays
[mesaAttr
]->Size
*
299 _mesa_sizeof_type(arrays
[mesaAttr
]->Type
));
300 const GLubyte
*end
= start
+ (max_index
* stride
) + sz
;
307 low_addr
= MIN2(low_addr
, start
);
308 high_addr
= MAX2(high_addr
, end
);
318 * Set up for drawing interleaved arrays that all live in one VBO
319 * or all live in user space.
320 * \param vbuffer returns vertex buffer info
321 * \param velements returns vertex element info
324 setup_interleaved_attribs(GLcontext
*ctx
,
325 const struct st_vertex_program
*vp
,
326 const struct st_vp_varient
*vpv
,
327 const struct gl_client_array
**arrays
,
330 struct pipe_vertex_buffer
*vbuffer
,
331 struct pipe_vertex_element velements
[])
333 struct pipe_context
*pipe
= ctx
->st
->pipe
;
335 const GLubyte
*offset0
= NULL
;
337 for (attr
= 0; attr
< vpv
->num_inputs
; attr
++) {
338 const GLuint mesaAttr
= vp
->index_to_input
[attr
];
339 struct gl_buffer_object
*bufobj
= arrays
[mesaAttr
]->BufferObj
;
340 struct st_buffer_object
*stobj
= st_buffer_object(bufobj
);
341 GLsizei stride
= arrays
[mesaAttr
]->StrideB
;
343 /*printf("stobj %u = %p\n", attr, (void*)stobj);*/
346 const GLubyte
*low
, *high
;
348 get_arrays_bounds(vp
, vpv
, arrays
, max_index
, &low
, &high
);
349 /*printf("buffer range: %p %p %d\n", low, high, high-low);*/
354 pipe_user_buffer_create(pipe
->screen
, (void *) low
, high
- low
);
355 vbuffer
->buffer_offset
= 0;
358 vbuffer
->buffer
= NULL
;
359 pipe_buffer_reference(&vbuffer
->buffer
, stobj
->buffer
);
360 vbuffer
->buffer_offset
= pointer_to_offset(low
);
362 vbuffer
->stride
= stride
; /* in bytes */
363 vbuffer
->max_index
= max_index
;
366 velements
[attr
].src_offset
=
367 (unsigned) (arrays
[mesaAttr
]->Ptr
- offset0
);
368 velements
[attr
].instance_divisor
= 0;
369 velements
[attr
].vertex_buffer_index
= 0;
370 velements
[attr
].nr_components
= arrays
[mesaAttr
]->Size
;
371 velements
[attr
].src_format
=
372 st_pipe_vertex_format(arrays
[mesaAttr
]->Type
,
373 arrays
[mesaAttr
]->Size
,
374 arrays
[mesaAttr
]->Format
,
375 arrays
[mesaAttr
]->Normalized
);
376 assert(velements
[attr
].src_format
);
382 * Set up a separate pipe_vertex_buffer and pipe_vertex_element for each
384 * \param vbuffer returns vertex buffer info
385 * \param velements returns vertex element info
388 setup_non_interleaved_attribs(GLcontext
*ctx
,
389 const struct st_vertex_program
*vp
,
390 const struct st_vp_varient
*vpv
,
391 const struct gl_client_array
**arrays
,
393 GLboolean
*userSpace
,
394 struct pipe_vertex_buffer vbuffer
[],
395 struct pipe_vertex_element velements
[])
397 struct pipe_context
*pipe
= ctx
->st
->pipe
;
400 for (attr
= 0; attr
< vpv
->num_inputs
; attr
++) {
401 const GLuint mesaAttr
= vp
->index_to_input
[attr
];
402 struct gl_buffer_object
*bufobj
= arrays
[mesaAttr
]->BufferObj
;
403 GLsizei stride
= arrays
[mesaAttr
]->StrideB
;
405 *userSpace
= GL_FALSE
;
407 if (bufobj
&& bufobj
->Name
) {
408 /* Attribute data is in a VBO.
409 * Recall that for VBOs, the gl_client_array->Ptr field is
410 * really an offset from the start of the VBO, not a pointer.
412 struct st_buffer_object
*stobj
= st_buffer_object(bufobj
);
413 assert(stobj
->buffer
);
414 /*printf("stobj %u = %p\n", attr, (void*) stobj);*/
416 vbuffer
[attr
].buffer
= NULL
;
417 pipe_buffer_reference(&vbuffer
[attr
].buffer
, stobj
->buffer
);
418 vbuffer
[attr
].buffer_offset
= pointer_to_offset(arrays
[mesaAttr
]->Ptr
);
419 velements
[attr
].src_offset
= 0;
422 /* attribute data is in user-space memory, not a VBO */
424 /*printf("user-space array %d stride %d\n", attr, stride);*/
426 *userSpace
= GL_TRUE
;
429 if (arrays
[mesaAttr
]->Ptr
) {
430 /* user's vertex array */
431 if (arrays
[mesaAttr
]->StrideB
) {
432 bytes
= arrays
[mesaAttr
]->StrideB
* (max_index
+ 1);
435 bytes
= arrays
[mesaAttr
]->Size
436 * _mesa_sizeof_type(arrays
[mesaAttr
]->Type
);
438 vbuffer
[attr
].buffer
= pipe_user_buffer_create(pipe
->screen
,
439 (void *) arrays
[mesaAttr
]->Ptr
, bytes
);
442 /* no array, use ctx->Current.Attrib[] value */
443 bytes
= sizeof(ctx
->Current
.Attrib
[0]);
444 vbuffer
[attr
].buffer
= pipe_user_buffer_create(pipe
->screen
,
445 (void *) ctx
->Current
.Attrib
[mesaAttr
], bytes
);
449 vbuffer
[attr
].buffer_offset
= 0;
450 velements
[attr
].src_offset
= 0;
453 assert(velements
[attr
].src_offset
<= 2048); /* 11-bit field */
455 /* common-case setup */
456 vbuffer
[attr
].stride
= stride
; /* in bytes */
457 vbuffer
[attr
].max_index
= max_index
;
458 velements
[attr
].instance_divisor
= 0;
459 velements
[attr
].vertex_buffer_index
= attr
;
460 velements
[attr
].nr_components
= arrays
[mesaAttr
]->Size
;
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 /* Gallium probably doesn't want this in some cases. */
535 if (!index_bounds_valid
)
536 if (!vbo_all_varyings_in_vbos(arrays
))
537 vbo_get_minmax_index(ctx
, prims
, ib
, &min_index
, &max_index
);
539 /* sanity check for pointer arithmetic below */
540 assert(sizeof(arrays
[0]->Ptr
[0]) == 1);
542 vertDataEdgeFlags
= arrays
[VERT_ATTRIB_EDGEFLAG
]->BufferObj
&&
543 arrays
[VERT_ATTRIB_EDGEFLAG
]->BufferObj
->Name
;
544 if (vertDataEdgeFlags
!= ctx
->st
->vertdata_edgeflags
) {
545 ctx
->st
->vertdata_edgeflags
= vertDataEdgeFlags
;
546 ctx
->st
->dirty
.st
|= ST_NEW_EDGEFLAGS_DATA
;
549 st_validate_state(ctx
->st
);
551 /* must get these after state validation! */
553 vpv
= ctx
->st
->vp_varient
;
556 if (MESA_VERBOSE
& VERBOSE_GLSL
) {
560 (void) check_uniforms
;
564 * Setup the vbuffer[] and velements[] arrays.
566 if (is_interleaved_arrays(vp
, vpv
, arrays
, &userSpace
)) {
567 /*printf("Draw interleaved\n");*/
568 setup_interleaved_attribs(ctx
, vp
, vpv
, arrays
, max_index
, userSpace
,
571 num_velements
= vpv
->num_inputs
;
572 if (num_velements
== 0)
576 /*printf("Draw non-interleaved\n");*/
577 setup_non_interleaved_attribs(ctx
, vp
, vpv
, arrays
, max_index
,
578 &userSpace
, vbuffer
, velements
);
579 num_vbuffers
= vpv
->num_inputs
;
580 num_velements
= vpv
->num_inputs
;
586 for (i
= 0; i
< num_vbuffers
; i
++) {
587 printf("buffers[%d].stride = %u\n", i
, vbuffer
[i
].stride
);
588 printf("buffers[%d].max_index = %u\n", i
, vbuffer
[i
].max_index
);
589 printf("buffers[%d].buffer_offset = %u\n", i
, vbuffer
[i
].buffer_offset
);
590 printf("buffers[%d].buffer = %p\n", i
, (void*) vbuffer
[i
].buffer
);
592 for (i
= 0; i
< num_velements
; i
++) {
593 printf("vlements[%d].vbuffer_index = %u\n", i
, velements
[i
].vertex_buffer_index
);
594 printf("vlements[%d].src_offset = %u\n", i
, velements
[i
].src_offset
);
595 printf("vlements[%d].nr_comps = %u\n", i
, velements
[i
].nr_components
);
596 printf("vlements[%d].format = %s\n", i
, pf_name(velements
[i
].src_format
));
601 pipe
->set_vertex_buffers(pipe
, num_vbuffers
, vbuffer
);
602 pipe
->set_vertex_elements(pipe
, num_velements
, velements
);
604 if (num_vbuffers
== 0 || num_velements
== 0)
607 /* do actual drawing */
609 /* indexed primitive */
610 struct gl_buffer_object
*bufobj
= ib
->obj
;
611 struct pipe_buffer
*indexBuf
= NULL
;
612 unsigned indexSize
, indexOffset
, i
;
616 case GL_UNSIGNED_INT
:
619 case GL_UNSIGNED_SHORT
:
622 case GL_UNSIGNED_BYTE
:
630 /* get/create the index buffer object */
631 if (bufobj
&& bufobj
->Name
) {
632 /* elements/indexes are in a real VBO */
633 struct st_buffer_object
*stobj
= st_buffer_object(bufobj
);
634 pipe_buffer_reference(&indexBuf
, stobj
->buffer
);
635 indexOffset
= pointer_to_offset(ib
->ptr
) / indexSize
;
638 /* element/indicies are in user space memory */
639 indexBuf
= pipe_user_buffer_create(pipe
->screen
, (void *) ib
->ptr
,
640 ib
->count
* indexSize
);
645 if (nr_prims
== 1 && pipe
->draw_range_elements
!= NULL
) {
648 /* XXX: exercise temporary path to pass min/max directly
649 * through to driver & draw module. These interfaces still
650 * need a bit of work...
652 prim
= translate_prim( ctx
, prims
[i
].mode
);
654 pipe
->draw_range_elements(pipe
, indexBuf
, indexSize
,
658 prims
[i
].start
+ indexOffset
, prims
[i
].count
);
661 for (i
= 0; i
< nr_prims
; i
++) {
662 prim
= translate_prim( ctx
, prims
[i
].mode
);
664 pipe
->draw_elements(pipe
, indexBuf
, indexSize
,
666 prims
[i
].start
+ indexOffset
, prims
[i
].count
);
670 pipe_buffer_reference(&indexBuf
, NULL
);
677 for (i
= 0; i
< nr_prims
; i
++) {
678 prim
= translate_prim( ctx
, prims
[i
].mode
);
680 pipe
->draw_arrays(pipe
, prim
, prims
[i
].start
, prims
[i
].count
);
684 /* unreference buffers (frees wrapped user-space buffer objects) */
685 for (attr
= 0; attr
< num_vbuffers
; attr
++) {
686 pipe_buffer_reference(&vbuffer
[attr
].buffer
, NULL
);
687 assert(!vbuffer
[attr
].buffer
);
692 pipe
->set_vertex_buffers(pipe
, 0, NULL
);
697 void st_init_draw( struct st_context
*st
)
699 GLcontext
*ctx
= st
->ctx
;
701 vbo_set_draw_func(ctx
, st_draw_vbo
);
705 void st_destroy_draw( struct st_context
*st
)