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
39 * Keith Whitwell <keith@tungstengraphics.com>
43 #include "main/imports.h"
44 #include "main/image.h"
45 #include "main/bufferobj.h"
46 #include "main/macros.h"
47 #include "main/mfeatures.h"
48 #include "program/prog_uniform.h"
52 #include "st_context.h"
54 #include "st_cb_bufferobjects.h"
56 #include "st_program.h"
58 #include "pipe/p_context.h"
59 #include "pipe/p_defines.h"
60 #include "util/u_inlines.h"
61 #include "util/u_format.h"
62 #include "util/u_prim.h"
63 #include "util/u_draw_quad.h"
64 #include "draw/draw_context.h"
65 #include "cso_cache/cso_context.h"
68 static GLuint double_types[4] = {
69 PIPE_FORMAT_R64_FLOAT,
70 PIPE_FORMAT_R64G64_FLOAT,
71 PIPE_FORMAT_R64G64B64_FLOAT,
72 PIPE_FORMAT_R64G64B64A64_FLOAT
75 static GLuint float_types[4] = {
76 PIPE_FORMAT_R32_FLOAT,
77 PIPE_FORMAT_R32G32_FLOAT,
78 PIPE_FORMAT_R32G32B32_FLOAT,
79 PIPE_FORMAT_R32G32B32A32_FLOAT
82 static GLuint half_float_types[4] = {
83 PIPE_FORMAT_R16_FLOAT,
84 PIPE_FORMAT_R16G16_FLOAT,
85 PIPE_FORMAT_R16G16B16_FLOAT,
86 PIPE_FORMAT_R16G16B16A16_FLOAT
89 static GLuint uint_types_norm[4] = {
90 PIPE_FORMAT_R32_UNORM,
91 PIPE_FORMAT_R32G32_UNORM,
92 PIPE_FORMAT_R32G32B32_UNORM,
93 PIPE_FORMAT_R32G32B32A32_UNORM
96 static GLuint uint_types_scale[4] = {
97 PIPE_FORMAT_R32_USCALED,
98 PIPE_FORMAT_R32G32_USCALED,
99 PIPE_FORMAT_R32G32B32_USCALED,
100 PIPE_FORMAT_R32G32B32A32_USCALED
103 static GLuint int_types_norm[4] = {
104 PIPE_FORMAT_R32_SNORM,
105 PIPE_FORMAT_R32G32_SNORM,
106 PIPE_FORMAT_R32G32B32_SNORM,
107 PIPE_FORMAT_R32G32B32A32_SNORM
110 static GLuint int_types_scale[4] = {
111 PIPE_FORMAT_R32_SSCALED,
112 PIPE_FORMAT_R32G32_SSCALED,
113 PIPE_FORMAT_R32G32B32_SSCALED,
114 PIPE_FORMAT_R32G32B32A32_SSCALED
117 static GLuint ushort_types_norm[4] = {
118 PIPE_FORMAT_R16_UNORM,
119 PIPE_FORMAT_R16G16_UNORM,
120 PIPE_FORMAT_R16G16B16_UNORM,
121 PIPE_FORMAT_R16G16B16A16_UNORM
124 static GLuint ushort_types_scale[4] = {
125 PIPE_FORMAT_R16_USCALED,
126 PIPE_FORMAT_R16G16_USCALED,
127 PIPE_FORMAT_R16G16B16_USCALED,
128 PIPE_FORMAT_R16G16B16A16_USCALED
131 static GLuint short_types_norm[4] = {
132 PIPE_FORMAT_R16_SNORM,
133 PIPE_FORMAT_R16G16_SNORM,
134 PIPE_FORMAT_R16G16B16_SNORM,
135 PIPE_FORMAT_R16G16B16A16_SNORM
138 static GLuint short_types_scale[4] = {
139 PIPE_FORMAT_R16_SSCALED,
140 PIPE_FORMAT_R16G16_SSCALED,
141 PIPE_FORMAT_R16G16B16_SSCALED,
142 PIPE_FORMAT_R16G16B16A16_SSCALED
145 static GLuint ubyte_types_norm[4] = {
146 PIPE_FORMAT_R8_UNORM,
147 PIPE_FORMAT_R8G8_UNORM,
148 PIPE_FORMAT_R8G8B8_UNORM,
149 PIPE_FORMAT_R8G8B8A8_UNORM
152 static GLuint ubyte_types_scale[4] = {
153 PIPE_FORMAT_R8_USCALED,
154 PIPE_FORMAT_R8G8_USCALED,
155 PIPE_FORMAT_R8G8B8_USCALED,
156 PIPE_FORMAT_R8G8B8A8_USCALED
159 static GLuint byte_types_norm[4] = {
160 PIPE_FORMAT_R8_SNORM,
161 PIPE_FORMAT_R8G8_SNORM,
162 PIPE_FORMAT_R8G8B8_SNORM,
163 PIPE_FORMAT_R8G8B8A8_SNORM
166 static GLuint byte_types_scale[4] = {
167 PIPE_FORMAT_R8_SSCALED,
168 PIPE_FORMAT_R8G8_SSCALED,
169 PIPE_FORMAT_R8G8B8_SSCALED,
170 PIPE_FORMAT_R8G8B8A8_SSCALED
173 static GLuint fixed_types[4] = {
174 PIPE_FORMAT_R32_FIXED,
175 PIPE_FORMAT_R32G32_FIXED,
176 PIPE_FORMAT_R32G32B32_FIXED,
177 PIPE_FORMAT_R32G32B32A32_FIXED
183 * Return a PIPE_FORMAT_x for the given GL datatype and size.
186 st_pipe_vertex_format(GLenum type, GLuint size, GLenum format,
187 GLboolean normalized)
189 assert((type >= GL_BYTE && type <= GL_DOUBLE) ||
190 type == GL_FIXED || type == GL_HALF_FLOAT);
193 assert(format == GL_RGBA || format == GL_BGRA);
195 if (format == GL_BGRA) {
196 /* this is an odd-ball case */
197 assert(type == GL_UNSIGNED_BYTE);
199 return PIPE_FORMAT_B8G8R8A8_UNORM;
204 case GL_DOUBLE: return double_types[size-1];
205 case GL_FLOAT: return float_types[size-1];
206 case GL_HALF_FLOAT: return half_float_types[size-1];
207 case GL_INT: return int_types_norm[size-1];
208 case GL_SHORT: return short_types_norm[size-1];
209 case GL_BYTE: return byte_types_norm[size-1];
210 case GL_UNSIGNED_INT: return uint_types_norm[size-1];
211 case GL_UNSIGNED_SHORT: return ushort_types_norm[size-1];
212 case GL_UNSIGNED_BYTE: return ubyte_types_norm[size-1];
213 case GL_FIXED: return fixed_types[size-1];
214 default: assert(0); return 0;
219 case GL_DOUBLE: return double_types[size-1];
220 case GL_FLOAT: return float_types[size-1];
221 case GL_HALF_FLOAT: return half_float_types[size-1];
222 case GL_INT: return int_types_scale[size-1];
223 case GL_SHORT: return short_types_scale[size-1];
224 case GL_BYTE: return byte_types_scale[size-1];
225 case GL_UNSIGNED_INT: return uint_types_scale[size-1];
226 case GL_UNSIGNED_SHORT: return ushort_types_scale[size-1];
227 case GL_UNSIGNED_BYTE: return ubyte_types_scale[size-1];
228 case GL_FIXED: return fixed_types[size-1];
229 default: assert(0); return 0;
232 return PIPE_FORMAT_NONE; /* silence compiler warning */
237 * This is very similar to vbo_all_varyings_in_vbos() but we test
238 * the stride. See bug 38626.
241 all_varyings_in_vbos(const struct gl_client_array *arrays[])
245 for (i = 0; i < VERT_ATTRIB_MAX; i++)
246 if (arrays[i]->StrideB && !_mesa_is_bufferobj(arrays[i]->BufferObj))
254 * Examine the active arrays to determine if we have interleaved
255 * vertex arrays all living in one VBO, or all living in user space.
258 is_interleaved_arrays(const struct st_vertex_program *vp,
259 const struct st_vp_variant *vpv,
260 const struct gl_client_array **arrays)
263 const struct gl_buffer_object *firstBufObj = NULL;
264 GLint firstStride = -1;
265 const GLubyte *firstPtr = NULL;
266 GLboolean userSpaceBuffer = GL_FALSE;
268 for (attr = 0; attr < vpv->num_inputs; attr++) {
269 const GLuint mesaAttr = vp->index_to_input[attr];
270 const struct gl_client_array *array = arrays[mesaAttr];
271 const struct gl_buffer_object *bufObj = array->BufferObj;
272 const GLsizei stride = array->StrideB; /* in bytes */
275 /* save info about the first array */
276 firstStride = stride;
277 firstPtr = array->Ptr;
278 firstBufObj = bufObj;
279 userSpaceBuffer = !bufObj || !bufObj->Name;
282 /* check if other arrays interleave with the first, in same buffer */
283 if (stride != firstStride)
284 return GL_FALSE; /* strides don't match */
286 if (bufObj != firstBufObj)
287 return GL_FALSE; /* arrays in different VBOs */
289 if (abs(array->Ptr - firstPtr) > firstStride)
290 return GL_FALSE; /* arrays start too far apart */
292 if ((!bufObj || !_mesa_is_bufferobj(bufObj)) != userSpaceBuffer)
293 return GL_FALSE; /* mix of VBO and user-space arrays */
302 * Set up for drawing interleaved arrays that all live in one VBO
303 * or all live in user space.
304 * \param vbuffer returns vertex buffer info
305 * \param velements returns vertex element info
308 setup_interleaved_attribs(struct gl_context *ctx,
309 const struct st_vertex_program *vp,
310 const struct st_vp_variant *vpv,
311 const struct gl_client_array **arrays,
312 struct pipe_vertex_buffer *vbuffer,
313 struct pipe_vertex_element velements[],
315 unsigned num_instances)
317 struct st_context *st = st_context(ctx);
318 struct pipe_context *pipe = st->pipe;
320 const GLubyte *low_addr = NULL;
322 /* Find the lowest address of the arrays we're drawing */
323 if (vpv->num_inputs) {
324 low_addr = arrays[vp->index_to_input[0]]->Ptr;
326 for (attr = 1; attr < vpv->num_inputs; attr++) {
327 const GLubyte *start = arrays[vp->index_to_input[attr]]->Ptr;
328 low_addr = MIN2(low_addr, start);
332 for (attr = 0; attr < vpv->num_inputs; attr++) {
333 const GLuint mesaAttr = vp->index_to_input[attr];
334 const struct gl_client_array *array = arrays[mesaAttr];
335 struct gl_buffer_object *bufobj = array->BufferObj;
336 struct st_buffer_object *stobj = st_buffer_object(bufobj);
337 unsigned src_offset = (unsigned) (array->Ptr - low_addr);
338 GLuint element_size = array->_ElementSize;
339 GLsizei stride = array->StrideB;
341 assert(element_size == array->Size * _mesa_sizeof_type(array->Type));
344 if (bufobj && _mesa_is_bufferobj(bufobj)) {
345 vbuffer->buffer = NULL;
346 pipe_resource_reference(&vbuffer->buffer, stobj->buffer);
347 vbuffer->buffer_offset = pointer_to_offset(low_addr);
350 uint divisor = array->InstanceDivisor;
351 uint last_index = divisor ? num_instances / divisor : max_index;
352 uint bytes = src_offset + stride * last_index + element_size;
354 vbuffer->buffer = pipe_user_buffer_create(pipe->screen,
357 PIPE_BIND_VERTEX_BUFFER);
358 vbuffer->buffer_offset = 0;
360 /* Track user vertex buffers. */
361 pipe_resource_reference(&st->user_attrib[0].buffer, vbuffer->buffer);
362 st->user_attrib[0].element_size = element_size;
363 st->user_attrib[0].stride = stride;
364 st->num_user_attribs = 1;
366 vbuffer->stride = stride; /* in bytes */
369 velements[attr].src_offset = src_offset;
370 velements[attr].instance_divisor = array->InstanceDivisor;
371 velements[attr].vertex_buffer_index = 0;
372 velements[attr].src_format = st_pipe_vertex_format(array->Type,
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(struct gl_context *ctx,
389 const struct st_vertex_program *vp,
390 const struct st_vp_variant *vpv,
391 const struct gl_client_array **arrays,
392 struct pipe_vertex_buffer vbuffer[],
393 struct pipe_vertex_element velements[],
395 unsigned num_instances)
397 struct st_context *st = st_context(ctx);
398 struct pipe_context *pipe = st->pipe;
401 for (attr = 0; attr < vpv->num_inputs; attr++) {
402 const GLuint mesaAttr = vp->index_to_input[attr];
403 const struct gl_client_array *array = arrays[mesaAttr];
404 struct gl_buffer_object *bufobj = array->BufferObj;
405 GLuint element_size = array->_ElementSize;
406 GLsizei stride = array->StrideB;
408 assert(element_size == array->Size * _mesa_sizeof_type(array->Type));
410 if (bufobj && _mesa_is_bufferobj(bufobj)) {
411 /* Attribute data is in a VBO.
412 * Recall that for VBOs, the gl_client_array->Ptr field is
413 * really an offset from the start of the VBO, not a pointer.
415 struct st_buffer_object *stobj = st_buffer_object(bufobj);
416 assert(stobj->buffer);
418 vbuffer[attr].buffer = NULL;
419 pipe_resource_reference(&vbuffer[attr].buffer, stobj->buffer);
420 vbuffer[attr].buffer_offset = pointer_to_offset(array->Ptr);
428 uint divisor = array->InstanceDivisor;
429 uint last_index = divisor ? num_instances / divisor : max_index;
431 bytes = stride * last_index + element_size;
433 ptr = (void *) array->Ptr;
436 /* no array, use ctx->Current.Attrib[] value */
437 bytes = element_size = sizeof(ctx->Current.Attrib[0]);
438 ptr = (void *) ctx->Current.Attrib[mesaAttr];
445 vbuffer[attr].buffer =
446 pipe_user_buffer_create(pipe->screen, ptr, bytes,
447 PIPE_BIND_VERTEX_BUFFER);
449 vbuffer[attr].buffer_offset = 0;
451 /* Track user vertex buffers. */
452 pipe_resource_reference(&st->user_attrib[attr].buffer, vbuffer[attr].buffer);
453 st->user_attrib[attr].element_size = element_size;
454 st->user_attrib[attr].stride = stride;
455 st->num_user_attribs = MAX2(st->num_user_attribs, attr + 1);
458 /* common-case setup */
459 vbuffer[attr].stride = stride; /* in bytes */
461 velements[attr].src_offset = 0;
462 velements[attr].instance_divisor = array->InstanceDivisor;
463 velements[attr].vertex_buffer_index = attr;
464 velements[attr].src_format = st_pipe_vertex_format(array->Type,
468 assert(velements[attr].src_format);
474 setup_index_buffer(struct gl_context *ctx,
475 const struct _mesa_index_buffer *ib,
476 struct pipe_index_buffer *ibuffer)
478 struct st_context *st = st_context(ctx);
479 struct pipe_context *pipe = st->pipe;
481 memset(ibuffer, 0, sizeof(*ibuffer));
483 struct gl_buffer_object *bufobj = ib->obj;
486 case GL_UNSIGNED_INT:
487 ibuffer->index_size = 4;
489 case GL_UNSIGNED_SHORT:
490 ibuffer->index_size = 2;
492 case GL_UNSIGNED_BYTE:
493 ibuffer->index_size = 1;
500 /* get/create the index buffer object */
501 if (bufobj && _mesa_is_bufferobj(bufobj)) {
502 /* elements/indexes are in a real VBO */
503 struct st_buffer_object *stobj = st_buffer_object(bufobj);
504 pipe_resource_reference(&ibuffer->buffer, stobj->buffer);
505 ibuffer->offset = pointer_to_offset(ib->ptr);
508 /* element/indicies are in user space memory */
510 pipe_user_buffer_create(pipe->screen, (void *) ib->ptr,
511 ib->count * ibuffer->index_size,
512 PIPE_BIND_INDEX_BUFFER);
519 * Prior to drawing, check that any uniforms referenced by the
520 * current shader have been set. If a uniform has not been set,
524 check_uniforms(struct gl_context *ctx)
526 struct gl_shader_program *shProg[3] = {
527 ctx->Shader.CurrentVertexProgram,
528 ctx->Shader.CurrentGeometryProgram,
529 ctx->Shader.CurrentFragmentProgram,
533 for (j = 0; j < 3; j++) {
536 if (shProg[j] == NULL || !shProg[j]->LinkStatus)
539 for (i = 0; i < shProg[j]->Uniforms->NumUniforms; i++) {
540 const struct gl_uniform *u = &shProg[j]->Uniforms->Uniforms[i];
541 if (!u->Initialized) {
543 "Using shader with uninitialized uniform: %s",
552 * Translate OpenGL primtive type (GL_POINTS, GL_TRIANGLE_STRIP, etc) to
553 * the corresponding Gallium type.
556 translate_prim(const struct gl_context *ctx, unsigned prim)
558 /* GL prims should match Gallium prims, spot-check a few */
559 assert(GL_POINTS == PIPE_PRIM_POINTS);
560 assert(GL_QUADS == PIPE_PRIM_QUADS);
561 assert(GL_TRIANGLE_STRIP_ADJACENCY == PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY);
563 /* Avoid quadstrips if it's easy to do so:
564 * Note: it's important to do the correct trimming if we change the
565 * prim type! We do that wherever this function is called.
567 if (prim == GL_QUAD_STRIP &&
568 ctx->Light.ShadeModel != GL_FLAT &&
569 ctx->Polygon.FrontMode == GL_FILL &&
570 ctx->Polygon.BackMode == GL_FILL)
571 prim = GL_TRIANGLE_STRIP;
578 st_validate_varrays(struct gl_context *ctx,
579 const struct gl_client_array **arrays,
581 unsigned num_instances)
583 struct st_context *st = st_context(ctx);
584 const struct st_vertex_program *vp;
585 const struct st_vp_variant *vpv;
586 struct pipe_vertex_buffer vbuffer[PIPE_MAX_SHADER_INPUTS];
587 struct pipe_vertex_element velements[PIPE_MAX_ATTRIBS];
588 unsigned num_vbuffers, num_velements;
592 /* must get these after state validation! */
594 vpv = st->vp_variant;
596 memset(velements, 0, sizeof(struct pipe_vertex_element) * vpv->num_inputs);
598 /* Unreference any user vertex buffers. */
599 for (i = 0; i < st->num_user_attribs; i++) {
600 pipe_resource_reference(&st->user_attrib[i].buffer, NULL);
602 st->num_user_attribs = 0;
605 * Setup the vbuffer[] and velements[] arrays.
607 if (is_interleaved_arrays(vp, vpv, arrays)) {
608 setup_interleaved_attribs(ctx, vp, vpv, arrays, vbuffer, velements,
609 max_index, num_instances);
612 num_velements = vpv->num_inputs;
613 if (num_velements == 0)
617 setup_non_interleaved_attribs(ctx, vp, vpv, arrays,
618 vbuffer, velements, max_index,
620 num_vbuffers = vpv->num_inputs;
621 num_velements = vpv->num_inputs;
624 cso_set_vertex_buffers(st->cso_context, num_vbuffers, vbuffer);
625 cso_set_vertex_elements(st->cso_context, num_velements, velements);
627 /* unreference buffers (frees wrapped user-space buffer objects)
628 * This is OK, because the pipe driver should reference buffers by itself
629 * in set_vertex_buffers. */
630 for (attr = 0; attr < num_vbuffers; attr++) {
631 pipe_resource_reference(&vbuffer[attr].buffer, NULL);
632 assert(!vbuffer[attr].buffer);
638 * This function gets plugged into the VBO module and is called when
639 * we have something to render.
640 * Basically, translate the information into the format expected by gallium.
643 st_draw_vbo(struct gl_context *ctx,
644 const struct gl_client_array **arrays,
645 const struct _mesa_prim *prims,
647 const struct _mesa_index_buffer *ib,
648 GLboolean index_bounds_valid,
652 struct st_context *st = st_context(ctx);
653 struct pipe_context *pipe = st->pipe;
654 struct pipe_index_buffer ibuffer;
655 struct pipe_draw_info info;
656 unsigned i, num_instances = 1;
657 GLboolean new_array =
659 (st->dirty.mesa & (_NEW_ARRAY | _NEW_PROGRAM | _NEW_BUFFER_OBJECT)) != 0;
661 /* Mesa core state should have been validated already */
662 assert(ctx->NewState == 0x0);
665 /* Gallium probably doesn't want this in some cases. */
666 if (!index_bounds_valid)
667 if (!all_varyings_in_vbos(arrays))
668 vbo_get_minmax_index(ctx, prims, ib, &min_index, &max_index);
670 for (i = 0; i < nr_prims; i++) {
671 num_instances = MAX2(num_instances, prims[i].num_instances);
675 /* Get min/max index for non-indexed drawing. */
679 for (i = 0; i < nr_prims; i++) {
680 min_index = MIN2(min_index, prims[i].start);
681 max_index = MAX2(max_index, prims[i].start + prims[i].count - 1);
682 num_instances = MAX2(num_instances, prims[i].num_instances);
686 /* Validate state. */
688 GLboolean vertDataEdgeFlags;
690 /* sanity check for pointer arithmetic below */
691 assert(sizeof(arrays[0]->Ptr[0]) == 1);
693 vertDataEdgeFlags = arrays[VERT_ATTRIB_EDGEFLAG]->BufferObj &&
694 arrays[VERT_ATTRIB_EDGEFLAG]->BufferObj->Name;
695 if (vertDataEdgeFlags != st->vertdata_edgeflags) {
696 st->vertdata_edgeflags = vertDataEdgeFlags;
697 st->dirty.st |= ST_NEW_EDGEFLAGS_DATA;
700 st_validate_state(st);
703 st_validate_varrays(ctx, arrays, max_index, num_instances);
707 if (MESA_VERBOSE & VERBOSE_GLSL) {
711 (void) check_uniforms;
715 /* Notify the driver that the content of user buffers may have been
717 assert(max_index >= min_index);
718 if (!new_array && st->num_user_attribs) {
719 for (i = 0; i < st->num_user_attribs; i++) {
720 if (st->user_attrib[i].buffer) {
721 unsigned element_size = st->user_attrib[i].element_size;
722 unsigned stride = st->user_attrib[i].stride;
723 unsigned min_offset = min_index * stride;
724 unsigned max_offset = max_index * stride + element_size;
726 assert(max_offset > min_offset);
728 pipe->redefine_user_buffer(pipe, st->user_attrib[i].buffer,
730 max_offset - min_offset);
735 setup_index_buffer(ctx, ib, &ibuffer);
736 pipe->set_index_buffer(pipe, &ibuffer);
738 util_draw_init_info(&info);
741 if (min_index != ~0 && max_index != ~0) {
742 info.min_index = min_index;
743 info.max_index = max_index;
747 info.primitive_restart = ctx->Array.PrimitiveRestart;
748 info.restart_index = ctx->Array.RestartIndex;
750 /* do actual drawing */
751 for (i = 0; i < nr_prims; i++) {
752 info.mode = translate_prim( ctx, prims[i].mode );
753 info.start = prims[i].start;
754 info.count = prims[i].count;
755 info.instance_count = prims[i].num_instances;
756 info.index_bias = prims[i].basevertex;
758 info.min_index = info.start;
759 info.max_index = info.start + info.count - 1;
762 if (u_trim_pipe_prim(info.mode, &info.count))
763 pipe->draw_vbo(pipe, &info);
766 pipe_resource_reference(&ibuffer.buffer, NULL);
771 st_init_draw(struct st_context *st)
773 struct gl_context *ctx = st->ctx;
775 vbo_set_draw_func(ctx, st_draw_vbo);
777 #if FEATURE_feedback || FEATURE_rastpos
778 st->draw = draw_create(st->pipe); /* for selection/feedback */
780 /* Disable draw options that might convert points/lines to tris, etc.
781 * as that would foul-up feedback/selection mode.
783 draw_wide_line_threshold(st->draw, 1000.0f);
784 draw_wide_point_threshold(st->draw, 1000.0f);
785 draw_enable_line_stipple(st->draw, FALSE);
786 draw_enable_point_sprites(st->draw, FALSE);
792 st_destroy_draw(struct st_context *st)
794 #if FEATURE_feedback || FEATURE_rastpos
795 draw_destroy(st->draw);