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 "program/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 "draw/draw_context.h"
61 #include "cso_cache/cso_context.h"
64 static GLuint double_types
[4] = {
65 PIPE_FORMAT_R64_FLOAT
,
66 PIPE_FORMAT_R64G64_FLOAT
,
67 PIPE_FORMAT_R64G64B64_FLOAT
,
68 PIPE_FORMAT_R64G64B64A64_FLOAT
71 static GLuint float_types
[4] = {
72 PIPE_FORMAT_R32_FLOAT
,
73 PIPE_FORMAT_R32G32_FLOAT
,
74 PIPE_FORMAT_R32G32B32_FLOAT
,
75 PIPE_FORMAT_R32G32B32A32_FLOAT
78 static GLuint half_float_types
[4] = {
79 PIPE_FORMAT_R16_FLOAT
,
80 PIPE_FORMAT_R16G16_FLOAT
,
81 PIPE_FORMAT_R16G16B16_FLOAT
,
82 PIPE_FORMAT_R16G16B16A16_FLOAT
85 static GLuint uint_types_norm
[4] = {
86 PIPE_FORMAT_R32_UNORM
,
87 PIPE_FORMAT_R32G32_UNORM
,
88 PIPE_FORMAT_R32G32B32_UNORM
,
89 PIPE_FORMAT_R32G32B32A32_UNORM
92 static GLuint uint_types_scale
[4] = {
93 PIPE_FORMAT_R32_USCALED
,
94 PIPE_FORMAT_R32G32_USCALED
,
95 PIPE_FORMAT_R32G32B32_USCALED
,
96 PIPE_FORMAT_R32G32B32A32_USCALED
99 static GLuint int_types_norm
[4] = {
100 PIPE_FORMAT_R32_SNORM
,
101 PIPE_FORMAT_R32G32_SNORM
,
102 PIPE_FORMAT_R32G32B32_SNORM
,
103 PIPE_FORMAT_R32G32B32A32_SNORM
106 static GLuint int_types_scale
[4] = {
107 PIPE_FORMAT_R32_SSCALED
,
108 PIPE_FORMAT_R32G32_SSCALED
,
109 PIPE_FORMAT_R32G32B32_SSCALED
,
110 PIPE_FORMAT_R32G32B32A32_SSCALED
113 static GLuint ushort_types_norm
[4] = {
114 PIPE_FORMAT_R16_UNORM
,
115 PIPE_FORMAT_R16G16_UNORM
,
116 PIPE_FORMAT_R16G16B16_UNORM
,
117 PIPE_FORMAT_R16G16B16A16_UNORM
120 static GLuint ushort_types_scale
[4] = {
121 PIPE_FORMAT_R16_USCALED
,
122 PIPE_FORMAT_R16G16_USCALED
,
123 PIPE_FORMAT_R16G16B16_USCALED
,
124 PIPE_FORMAT_R16G16B16A16_USCALED
127 static GLuint short_types_norm
[4] = {
128 PIPE_FORMAT_R16_SNORM
,
129 PIPE_FORMAT_R16G16_SNORM
,
130 PIPE_FORMAT_R16G16B16_SNORM
,
131 PIPE_FORMAT_R16G16B16A16_SNORM
134 static GLuint short_types_scale
[4] = {
135 PIPE_FORMAT_R16_SSCALED
,
136 PIPE_FORMAT_R16G16_SSCALED
,
137 PIPE_FORMAT_R16G16B16_SSCALED
,
138 PIPE_FORMAT_R16G16B16A16_SSCALED
141 static GLuint ubyte_types_norm
[4] = {
142 PIPE_FORMAT_R8_UNORM
,
143 PIPE_FORMAT_R8G8_UNORM
,
144 PIPE_FORMAT_R8G8B8_UNORM
,
145 PIPE_FORMAT_R8G8B8A8_UNORM
148 static GLuint ubyte_types_scale
[4] = {
149 PIPE_FORMAT_R8_USCALED
,
150 PIPE_FORMAT_R8G8_USCALED
,
151 PIPE_FORMAT_R8G8B8_USCALED
,
152 PIPE_FORMAT_R8G8B8A8_USCALED
155 static GLuint byte_types_norm
[4] = {
156 PIPE_FORMAT_R8_SNORM
,
157 PIPE_FORMAT_R8G8_SNORM
,
158 PIPE_FORMAT_R8G8B8_SNORM
,
159 PIPE_FORMAT_R8G8B8A8_SNORM
162 static GLuint byte_types_scale
[4] = {
163 PIPE_FORMAT_R8_SSCALED
,
164 PIPE_FORMAT_R8G8_SSCALED
,
165 PIPE_FORMAT_R8G8B8_SSCALED
,
166 PIPE_FORMAT_R8G8B8A8_SSCALED
169 static GLuint fixed_types
[4] = {
170 PIPE_FORMAT_R32_FIXED
,
171 PIPE_FORMAT_R32G32_FIXED
,
172 PIPE_FORMAT_R32G32B32_FIXED
,
173 PIPE_FORMAT_R32G32B32A32_FIXED
179 * Return a PIPE_FORMAT_x for the given GL datatype and size.
182 st_pipe_vertex_format(GLenum type
, GLuint size
, GLenum format
,
183 GLboolean normalized
)
185 assert((type
>= GL_BYTE
&& type
<= GL_DOUBLE
) ||
186 type
== GL_FIXED
|| type
== GL_HALF_FLOAT
);
189 assert(format
== GL_RGBA
|| format
== GL_BGRA
);
191 if (format
== GL_BGRA
) {
192 /* this is an odd-ball case */
193 assert(type
== GL_UNSIGNED_BYTE
);
195 return PIPE_FORMAT_B8G8R8A8_UNORM
;
200 case GL_DOUBLE
: return double_types
[size
-1];
201 case GL_FLOAT
: return float_types
[size
-1];
202 case GL_HALF_FLOAT
: return half_float_types
[size
-1];
203 case GL_INT
: return int_types_norm
[size
-1];
204 case GL_SHORT
: return short_types_norm
[size
-1];
205 case GL_BYTE
: return byte_types_norm
[size
-1];
206 case GL_UNSIGNED_INT
: return uint_types_norm
[size
-1];
207 case GL_UNSIGNED_SHORT
: return ushort_types_norm
[size
-1];
208 case GL_UNSIGNED_BYTE
: return ubyte_types_norm
[size
-1];
209 case GL_FIXED
: return fixed_types
[size
-1];
210 default: assert(0); return 0;
215 case GL_DOUBLE
: return double_types
[size
-1];
216 case GL_FLOAT
: return float_types
[size
-1];
217 case GL_HALF_FLOAT
: return half_float_types
[size
-1];
218 case GL_INT
: return int_types_scale
[size
-1];
219 case GL_SHORT
: return short_types_scale
[size
-1];
220 case GL_BYTE
: return byte_types_scale
[size
-1];
221 case GL_UNSIGNED_INT
: return uint_types_scale
[size
-1];
222 case GL_UNSIGNED_SHORT
: return ushort_types_scale
[size
-1];
223 case GL_UNSIGNED_BYTE
: return ubyte_types_scale
[size
-1];
224 case GL_FIXED
: return fixed_types
[size
-1];
225 default: assert(0); return 0;
228 return 0; /* silence compiler warning */
236 * Examine the active arrays to determine if we have interleaved
237 * vertex arrays all living in one VBO, or all living in user space.
238 * \param userSpace returns whether the arrays are in user space.
241 is_interleaved_arrays(const struct st_vertex_program
*vp
,
242 const struct st_vp_varient
*vpv
,
243 const struct gl_client_array
**arrays
,
244 GLboolean
*userSpace
)
247 const struct gl_buffer_object
*firstBufObj
= NULL
;
248 GLint firstStride
= -1;
249 GLuint num_client_arrays
= 0;
250 const GLubyte
*client_addr
= NULL
;
252 for (attr
= 0; attr
< vpv
->num_inputs
; attr
++) {
253 const GLuint mesaAttr
= vp
->index_to_input
[attr
];
254 const struct gl_buffer_object
*bufObj
= arrays
[mesaAttr
]->BufferObj
;
255 const GLsizei stride
= arrays
[mesaAttr
]->StrideB
; /* in bytes */
257 if (firstStride
< 0) {
258 firstStride
= stride
;
260 else if (firstStride
!= stride
) {
264 if (!bufObj
|| !bufObj
->Name
) {
266 /* Try to detect if the client-space arrays are
267 * "close" to each other.
270 client_addr
= arrays
[mesaAttr
]->Ptr
;
272 else if (abs(arrays
[mesaAttr
]->Ptr
- client_addr
) > firstStride
) {
273 /* arrays start too far apart */
277 else if (!firstBufObj
) {
278 firstBufObj
= bufObj
;
280 else if (bufObj
!= firstBufObj
) {
285 *userSpace
= (num_client_arrays
== vpv
->num_inputs
);
286 /* debug_printf("user space: %s (%d arrays, %d inputs)\n",
287 (int)*userSpace ? "Yes" : "No", num_client_arrays, vp->num_inputs); */
294 * Compute the memory range occupied by the arrays.
297 get_arrays_bounds(const struct st_vertex_program
*vp
,
298 const struct st_vp_varient
*vpv
,
299 const struct gl_client_array
**arrays
,
301 const GLubyte
**low
, const GLubyte
**high
)
303 const GLubyte
*low_addr
= NULL
;
304 const GLubyte
*high_addr
= NULL
;
307 /* debug_printf("get_arrays_bounds: Handling %u attrs\n", vpv->num_inputs); */
309 for (attr
= 0; attr
< vpv
->num_inputs
; attr
++) {
310 const GLuint mesaAttr
= vp
->index_to_input
[attr
];
311 const GLint stride
= arrays
[mesaAttr
]->StrideB
;
312 const GLubyte
*start
= arrays
[mesaAttr
]->Ptr
;
313 const unsigned sz
= (arrays
[mesaAttr
]->Size
*
314 _mesa_sizeof_type(arrays
[mesaAttr
]->Type
));
315 const GLubyte
*end
= start
+ (max_index
* stride
) + sz
;
317 /* debug_printf("attr %u: stride %d size %u start %p end %p\n",
318 attr, stride, sz, start, end); */
325 low_addr
= MIN2(low_addr
, start
);
326 high_addr
= MAX2(high_addr
, end
);
336 * Set up for drawing interleaved arrays that all live in one VBO
337 * or all live in user space.
338 * \param vbuffer returns vertex buffer info
339 * \param velements returns vertex element info
342 setup_interleaved_attribs(GLcontext
*ctx
,
343 const struct st_vertex_program
*vp
,
344 const struct st_vp_varient
*vpv
,
345 const struct gl_client_array
**arrays
,
348 struct pipe_vertex_buffer
*vbuffer
,
349 struct pipe_vertex_element velements
[])
351 struct st_context
*st
= st_context(ctx
);
352 struct pipe_context
*pipe
= st
->pipe
;
354 const GLubyte
*offset0
= NULL
;
356 for (attr
= 0; attr
< vpv
->num_inputs
; attr
++) {
357 const GLuint mesaAttr
= vp
->index_to_input
[attr
];
358 struct gl_buffer_object
*bufobj
= arrays
[mesaAttr
]->BufferObj
;
359 struct st_buffer_object
*stobj
= st_buffer_object(bufobj
);
360 GLsizei stride
= arrays
[mesaAttr
]->StrideB
;
362 /*printf("stobj %u = %p\n", attr, (void*)stobj);*/
365 const GLubyte
*low
, *high
;
367 get_arrays_bounds(vp
, vpv
, arrays
, max_index
, &low
, &high
);
368 /* debug_printf("buffer range: %p %p range %d max index %u\n",
369 low, high, high - low, max_index); */
374 pipe_user_buffer_create(pipe
->screen
, (void *) low
, high
- low
,
375 PIPE_BIND_VERTEX_BUFFER
);
376 vbuffer
->buffer_offset
= 0;
379 vbuffer
->buffer
= NULL
;
380 pipe_resource_reference(&vbuffer
->buffer
, stobj
->buffer
);
381 vbuffer
->buffer_offset
= pointer_to_offset(low
);
383 vbuffer
->stride
= stride
; /* in bytes */
384 vbuffer
->max_index
= max_index
;
387 velements
[attr
].src_offset
=
388 (unsigned) (arrays
[mesaAttr
]->Ptr
- offset0
);
389 velements
[attr
].instance_divisor
= 0;
390 velements
[attr
].vertex_buffer_index
= 0;
391 velements
[attr
].src_format
=
392 st_pipe_vertex_format(arrays
[mesaAttr
]->Type
,
393 arrays
[mesaAttr
]->Size
,
394 arrays
[mesaAttr
]->Format
,
395 arrays
[mesaAttr
]->Normalized
);
396 assert(velements
[attr
].src_format
);
402 * Set up a separate pipe_vertex_buffer and pipe_vertex_element for each
404 * \param vbuffer returns vertex buffer info
405 * \param velements returns vertex element info
408 setup_non_interleaved_attribs(GLcontext
*ctx
,
409 const struct st_vertex_program
*vp
,
410 const struct st_vp_varient
*vpv
,
411 const struct gl_client_array
**arrays
,
413 GLboolean
*userSpace
,
414 struct pipe_vertex_buffer vbuffer
[],
415 struct pipe_vertex_element velements
[])
417 struct st_context
*st
= st_context(ctx
);
418 struct pipe_context
*pipe
= st
->pipe
;
421 for (attr
= 0; attr
< vpv
->num_inputs
; attr
++) {
422 const GLuint mesaAttr
= vp
->index_to_input
[attr
];
423 struct gl_buffer_object
*bufobj
= arrays
[mesaAttr
]->BufferObj
;
424 GLsizei stride
= arrays
[mesaAttr
]->StrideB
;
426 *userSpace
= GL_FALSE
;
428 if (bufobj
&& bufobj
->Name
) {
429 /* Attribute data is in a VBO.
430 * Recall that for VBOs, the gl_client_array->Ptr field is
431 * really an offset from the start of the VBO, not a pointer.
433 struct st_buffer_object
*stobj
= st_buffer_object(bufobj
);
434 assert(stobj
->buffer
);
435 /*printf("stobj %u = %p\n", attr, (void*) stobj);*/
437 vbuffer
[attr
].buffer
= NULL
;
438 pipe_resource_reference(&vbuffer
[attr
].buffer
, stobj
->buffer
);
439 vbuffer
[attr
].buffer_offset
= pointer_to_offset(arrays
[mesaAttr
]->Ptr
);
440 velements
[attr
].src_offset
= 0;
443 /* attribute data is in user-space memory, not a VBO */
445 /*printf("user-space array %d stride %d\n", attr, stride);*/
447 *userSpace
= GL_TRUE
;
450 if (arrays
[mesaAttr
]->Ptr
) {
451 /* user's vertex array */
452 if (arrays
[mesaAttr
]->StrideB
) {
453 bytes
= arrays
[mesaAttr
]->StrideB
* (max_index
+ 1);
456 bytes
= arrays
[mesaAttr
]->Size
457 * _mesa_sizeof_type(arrays
[mesaAttr
]->Type
);
459 vbuffer
[attr
].buffer
=
460 pipe_user_buffer_create(pipe
->screen
,
461 (void *) arrays
[mesaAttr
]->Ptr
, bytes
,
462 PIPE_BIND_VERTEX_BUFFER
);
465 /* no array, use ctx->Current.Attrib[] value */
466 bytes
= sizeof(ctx
->Current
.Attrib
[0]);
467 vbuffer
[attr
].buffer
=
468 pipe_user_buffer_create(pipe
->screen
,
469 (void *) ctx
->Current
.Attrib
[mesaAttr
],
471 PIPE_BIND_VERTEX_BUFFER
);
475 vbuffer
[attr
].buffer_offset
= 0;
476 velements
[attr
].src_offset
= 0;
479 assert(velements
[attr
].src_offset
<= 2048); /* 11-bit field */
481 /* common-case setup */
482 vbuffer
[attr
].stride
= stride
; /* in bytes */
483 vbuffer
[attr
].max_index
= max_index
;
484 velements
[attr
].instance_divisor
= 0;
485 velements
[attr
].vertex_buffer_index
= attr
;
486 velements
[attr
].src_format
487 = st_pipe_vertex_format(arrays
[mesaAttr
]->Type
,
488 arrays
[mesaAttr
]->Size
,
489 arrays
[mesaAttr
]->Format
,
490 arrays
[mesaAttr
]->Normalized
);
491 assert(velements
[attr
].src_format
);
498 * Prior to drawing, check that any uniforms referenced by the
499 * current shader have been set. If a uniform has not been set,
503 check_uniforms(GLcontext
*ctx
)
505 const struct gl_shader_program
*shProg
= ctx
->Shader
.CurrentProgram
;
506 if (shProg
&& shProg
->LinkStatus
) {
508 for (i
= 0; i
< shProg
->Uniforms
->NumUniforms
; i
++) {
509 const struct gl_uniform
*u
= &shProg
->Uniforms
->Uniforms
[i
];
510 if (!u
->Initialized
) {
512 "Using shader with uninitialized uniform: %s",
520 static unsigned translate_prim( GLcontext
*ctx
,
523 /* Avoid quadstrips if it's easy to do so:
525 if (prim
== GL_QUAD_STRIP
&&
526 ctx
->Light
.ShadeModel
!= GL_FLAT
&&
527 ctx
->Polygon
.FrontMode
== GL_FILL
&&
528 ctx
->Polygon
.BackMode
== GL_FILL
)
529 prim
= GL_TRIANGLE_STRIP
;
535 * This function gets plugged into the VBO module and is called when
536 * we have something to render.
537 * Basically, translate the information into the format expected by gallium.
540 st_draw_vbo(GLcontext
*ctx
,
541 const struct gl_client_array
**arrays
,
542 const struct _mesa_prim
*prims
,
544 const struct _mesa_index_buffer
*ib
,
545 GLboolean index_bounds_valid
,
549 struct st_context
*st
= st_context(ctx
);
550 struct pipe_context
*pipe
= st
->pipe
;
551 const struct st_vertex_program
*vp
;
552 const struct st_vp_varient
*vpv
;
553 struct pipe_vertex_buffer vbuffer
[PIPE_MAX_SHADER_INPUTS
];
555 struct pipe_vertex_element velements
[PIPE_MAX_ATTRIBS
];
556 unsigned num_vbuffers
, num_velements
;
557 GLboolean userSpace
= GL_FALSE
;
558 GLboolean vertDataEdgeFlags
;
560 /* Mesa core state should have been validated already */
561 assert(ctx
->NewState
== 0x0);
563 /* Gallium probably doesn't want this in some cases. */
564 if (!index_bounds_valid
)
565 if (!vbo_all_varyings_in_vbos(arrays
))
566 vbo_get_minmax_index(ctx
, prims
, ib
, &min_index
, &max_index
);
568 /* sanity check for pointer arithmetic below */
569 assert(sizeof(arrays
[0]->Ptr
[0]) == 1);
571 vertDataEdgeFlags
= arrays
[VERT_ATTRIB_EDGEFLAG
]->BufferObj
&&
572 arrays
[VERT_ATTRIB_EDGEFLAG
]->BufferObj
->Name
;
573 if (vertDataEdgeFlags
!= st
->vertdata_edgeflags
) {
574 st
->vertdata_edgeflags
= vertDataEdgeFlags
;
575 st
->dirty
.st
|= ST_NEW_EDGEFLAGS_DATA
;
578 st_validate_state(st
);
580 /* must get these after state validation! */
582 vpv
= st
->vp_varient
;
585 if (MESA_VERBOSE
& VERBOSE_GLSL
) {
589 (void) check_uniforms
;
592 memset(velements
, 0, sizeof(struct pipe_vertex_element
) * vpv
->num_inputs
);
594 * Setup the vbuffer[] and velements[] arrays.
596 if (is_interleaved_arrays(vp
, vpv
, arrays
, &userSpace
)) {
597 /*printf("Draw interleaved\n");*/
598 setup_interleaved_attribs(ctx
, vp
, vpv
, arrays
, max_index
, userSpace
,
601 num_velements
= vpv
->num_inputs
;
602 if (num_velements
== 0)
606 /*printf("Draw non-interleaved\n");*/
607 setup_non_interleaved_attribs(ctx
, vp
, vpv
, arrays
, max_index
,
608 &userSpace
, vbuffer
, velements
);
609 num_vbuffers
= vpv
->num_inputs
;
610 num_velements
= vpv
->num_inputs
;
616 for (i
= 0; i
< num_vbuffers
; i
++) {
617 printf("buffers[%d].stride = %u\n", i
, vbuffer
[i
].stride
);
618 printf("buffers[%d].max_index = %u\n", i
, vbuffer
[i
].max_index
);
619 printf("buffers[%d].buffer_offset = %u\n", i
, vbuffer
[i
].buffer_offset
);
620 printf("buffers[%d].buffer = %p\n", i
, (void*) vbuffer
[i
].buffer
);
622 for (i
= 0; i
< num_velements
; i
++) {
623 printf("vlements[%d].vbuffer_index = %u\n", i
, velements
[i
].vertex_buffer_index
);
624 printf("vlements[%d].src_offset = %u\n", i
, velements
[i
].src_offset
);
625 printf("vlements[%d].format = %s\n", i
, util_format_name(velements
[i
].src_format
));
630 pipe
->set_vertex_buffers(pipe
, num_vbuffers
, vbuffer
);
631 cso_set_vertex_elements(st
->cso_context
, num_velements
, velements
);
633 if (num_vbuffers
== 0 || num_velements
== 0)
636 /* do actual drawing */
638 /* indexed primitive */
639 struct gl_buffer_object
*bufobj
= ib
->obj
;
640 struct pipe_resource
*indexBuf
= NULL
;
641 unsigned indexSize
, indexOffset
, i
;
645 case GL_UNSIGNED_INT
:
648 case GL_UNSIGNED_SHORT
:
651 case GL_UNSIGNED_BYTE
:
659 /* get/create the index buffer object */
660 if (bufobj
&& bufobj
->Name
) {
661 /* elements/indexes are in a real VBO */
662 struct st_buffer_object
*stobj
= st_buffer_object(bufobj
);
663 pipe_resource_reference(&indexBuf
, stobj
->buffer
);
664 indexOffset
= pointer_to_offset(ib
->ptr
) / indexSize
;
667 /* element/indicies are in user space memory */
668 indexBuf
= pipe_user_buffer_create(pipe
->screen
, (void *) ib
->ptr
,
669 ib
->count
* indexSize
,
670 PIPE_BIND_INDEX_BUFFER
);
675 if (pipe
->draw_range_elements
&& min_index
!= ~0 && max_index
!= ~0) {
676 /* XXX: exercise temporary path to pass min/max directly
677 * through to driver & draw module. These interfaces still
678 * need a bit of work...
680 for (i
= 0; i
< nr_prims
; i
++) {
681 prim
= translate_prim( ctx
, prims
[i
].mode
);
683 pipe
->draw_range_elements(pipe
, indexBuf
, indexSize
, 0,
684 min_index
, max_index
, prim
,
685 prims
[i
].start
+ indexOffset
, prims
[i
].count
);
689 for (i
= 0; i
< nr_prims
; i
++) {
690 prim
= translate_prim( ctx
, prims
[i
].mode
);
692 if (prims
[i
].num_instances
== 1) {
693 pipe
->draw_elements(pipe
, indexBuf
, indexSize
, 0, prim
,
694 prims
[i
].start
+ indexOffset
,
698 pipe
->draw_elements_instanced(pipe
, indexBuf
, indexSize
, 0, prim
,
699 prims
[i
].start
+ indexOffset
,
701 0, prims
[i
].num_instances
);
706 pipe_resource_reference(&indexBuf
, NULL
);
713 for (i
= 0; i
< nr_prims
; i
++) {
714 prim
= translate_prim( ctx
, prims
[i
].mode
);
716 if (prims
[i
].num_instances
== 1) {
717 pipe
->draw_arrays(pipe
, prim
, prims
[i
].start
, prims
[i
].count
);
720 pipe
->draw_arrays_instanced(pipe
, prim
, prims
[i
].start
,
722 0, prims
[i
].num_instances
);
727 /* unreference buffers (frees wrapped user-space buffer objects) */
728 for (attr
= 0; attr
< num_vbuffers
; attr
++) {
729 pipe_resource_reference(&vbuffer
[attr
].buffer
, NULL
);
730 assert(!vbuffer
[attr
].buffer
);
735 pipe
->set_vertex_buffers(pipe
, 0, NULL
);
740 void st_init_draw( struct st_context
*st
)
742 GLcontext
*ctx
= st
->ctx
;
744 vbo_set_draw_func(ctx
, st_draw_vbo
);
746 #if FEATURE_feedback || FEATURE_rastpos
747 st
->draw
= draw_create(st
->pipe
); /* for selection/feedback */
749 /* Disable draw options that might convert points/lines to tris, etc.
750 * as that would foul-up feedback/selection mode.
752 draw_wide_line_threshold(st
->draw
, 1000.0f
);
753 draw_wide_point_threshold(st
->draw
, 1000.0f
);
754 draw_enable_line_stipple(st
->draw
, FALSE
);
755 draw_enable_point_sprites(st
->draw
, FALSE
);
760 void st_destroy_draw( struct st_context
*st
)
762 #if FEATURE_feedback || FEATURE_rastpos
763 draw_destroy(st
->draw
);