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_inlines.h"
37 #include "util/u_prim.h"
39 #include "sp_context.h"
42 #include "sp_texture.h"
44 #include "draw/draw_context.h"
47 * This function handles drawing indexed and non-indexed prims,
48 * instanced and non-instanced drawing, with or without min/max element
50 * All the other drawing functions are expressed in terms of this
53 * For non-indexed prims, indexBuffer should be NULL.
54 * For non-instanced drawing, instanceCount should be 1.
55 * When the min/max element indexes aren't known, minIndex should be 0
56 * and maxIndex should be ~0.
59 softpipe_draw_vbo(struct pipe_context *pipe,
60 const struct pipe_draw_info *info)
62 struct softpipe_context *sp = softpipe_context(pipe);
63 struct draw_context *draw = sp->draw;
64 const void *mapped_indices = NULL;
67 if (!softpipe_check_render_cond(sp))
70 sp->reduced_api_prim = u_reduced_prim(info->mode);
73 softpipe_update_derived(sp, sp->reduced_api_prim);
76 /* Map vertex buffers */
77 for (i = 0; i < sp->num_vertex_buffers; i++) {
78 const void *buf = sp->vertex_buffer[i].user_buffer;
81 if (!sp->vertex_buffer[i].buffer) {
84 buf = softpipe_resource(sp->vertex_buffer[i].buffer)->data;
85 size = sp->vertex_buffer[i].buffer->width0;
87 draw_set_mapped_vertex_buffer(draw, i, buf, size);
90 /* Map index buffer, if present */
92 mapped_indices = sp->index_buffer.user_buffer;
94 mapped_indices = softpipe_resource(sp->index_buffer.buffer)->data;
96 draw_set_indexes(draw,
97 (ubyte *) mapped_indices + sp->index_buffer.offset,
98 sp->index_buffer.index_size);
102 for (i = 0; i < sp->num_so_targets; i++) {
103 void *buf = softpipe_resource(sp->so_targets[i]->target.buffer)->data;
104 sp->so_targets[i]->mapping = buf;
107 draw_set_mapped_so_targets(draw, sp->num_so_targets,
110 if (sp->gs && !sp->gs->shader.tokens) {
111 /* we have an empty geometry shader with stream output, so
112 attach the stream output info to the current vertex shader */
114 draw_vs_attach_so(sp->vs->draw_data, &sp->gs->shader.stream_output);
117 draw_collect_pipeline_statistics(draw,
118 sp->active_statistics_queries > 0);
121 draw_vbo(draw, info);
123 /* unmap vertex/index buffers - will cause draw module to flush */
124 for (i = 0; i < sp->num_vertex_buffers; i++) {
125 draw_set_mapped_vertex_buffer(draw, i, NULL, 0);
127 if (mapped_indices) {
128 draw_set_indexes(draw, NULL, 0);
131 draw_set_mapped_so_targets(draw, 0, NULL);
134 * TODO: Flush only when a user vertex/index buffer is present
135 * (or even better, modify draw module to do this
136 * internally when this condition is seen?)
140 /* Note: leave drawing surfaces mapped */
141 sp->dirty_render_cache = TRUE;