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 **************************************************************************/
34 #include "pipe/p_defines.h"
35 #include "pipe/p_context.h"
36 #include "util/u_prim.h"
38 #include "lp_context.h"
42 #include "draw/draw_context.h"
47 * Draw vertex arrays, with optional indexing, optional instancing.
48 * All the other drawing functions are implemented in terms of this function.
49 * Basically, map the vertex buffers (and drawing surfaces), then hand off
50 * the drawing to the 'draw' module.
53 llvmpipe_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
55 struct llvmpipe_context *lp = llvmpipe_context(pipe);
56 struct draw_context *draw = lp->draw;
57 const void *mapped_indices = NULL;
60 if (!llvmpipe_check_render_cond(lp))
64 llvmpipe_update_derived( lp );
69 for (i = 0; i < lp->num_vertex_buffers; i++) {
70 const void *buf = lp->vertex_buffer[i].user_buffer;
73 if (!lp->vertex_buffer[i].buffer) {
76 buf = llvmpipe_resource_data(lp->vertex_buffer[i].buffer);
77 size = lp->vertex_buffer[i].buffer->width0;
79 draw_set_mapped_vertex_buffer(draw, i, buf, size);
82 /* Map index buffer, if present */
84 mapped_indices = lp->index_buffer.user_buffer;
86 mapped_indices = llvmpipe_resource_data(lp->index_buffer.buffer);
88 draw_set_indexes(draw,
89 (ubyte *) mapped_indices + lp->index_buffer.offset,
90 lp->index_buffer.index_size);
93 for (i = 0; i < lp->num_so_targets; i++) {
95 if (lp->so_targets[i]) {
96 buf = llvmpipe_resource(lp->so_targets[i]->target.buffer)->data;
97 lp->so_targets[i]->mapping = buf;
100 draw_set_mapped_so_targets(draw, lp->num_so_targets,
103 llvmpipe_prepare_vertex_sampling(lp,
104 lp->num_sampler_views[PIPE_SHADER_VERTEX],
105 lp->sampler_views[PIPE_SHADER_VERTEX]);
106 llvmpipe_prepare_geometry_sampling(lp,
107 lp->num_sampler_views[PIPE_SHADER_GEOMETRY],
108 lp->sampler_views[PIPE_SHADER_GEOMETRY]);
109 if (lp->gs && !lp->gs->shader.tokens) {
110 /* we have an empty geometry shader with stream output, so
111 attach the stream output info to the current vertex shader */
113 draw_vs_attach_so(lp->vs->draw_data, &lp->gs->shader.stream_output);
116 draw_collect_pipeline_statistics(draw,
117 lp->active_statistics_queries > 0);
120 draw_vbo(draw, info);
123 * unmap vertex/index buffers
125 for (i = 0; i < lp->num_vertex_buffers; i++) {
126 draw_set_mapped_vertex_buffer(draw, i, NULL, 0);
128 if (mapped_indices) {
129 draw_set_indexes(draw, NULL, 0);
131 draw_set_mapped_so_targets(draw, 0, NULL);
133 if (lp->gs && !lp->gs->shader.tokens) {
134 /* we have attached stream output to the vs for rendering,
137 draw_vs_reset_so(lp->vs->draw_data);
141 llvmpipe_cleanup_vertex_sampling(lp);
142 llvmpipe_cleanup_geometry_sampling(lp);
145 * TODO: Flush only when a user vertex/index buffer is present
146 * (or even better, modify draw module to do this
147 * internally when this condition is seen?)
154 llvmpipe_init_draw_funcs(struct llvmpipe_context *llvmpipe)
156 llvmpipe->pipe.draw_vbo = llvmpipe_draw_vbo;