1 /**************************************************************************
2 *
3 * Copyright 2007 VMware, Inc.
4 * All Rights Reserved.
5 *
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:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
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 VMWARE 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.
25 *
26 **************************************************************************/
27
28 /* Author:
29 * Brian Paul
30 * Keith Whitwell
31 */
32
33
34 #include "pipe/p_defines.h"
35 #include "pipe/p_context.h"
36 #include "util/u_inlines.h"
37 #include "util/u_draw.h"
38 #include "util/u_prim.h"
39
40 #include "sp_context.h"
41 #include "sp_query.h"
42 #include "sp_state.h"
43 #include "sp_texture.h"
44 #include "sp_screen.h"
45
46 #include "draw/draw_context.h"
47
48 /**
49 * This function handles drawing indexed and non-indexed prims,
50 * instanced and non-instanced drawing, with or without min/max element
51 * indexes.
52 * All the other drawing functions are expressed in terms of this
53 * function.
54 *
55 * For non-indexed prims, indexBuffer should be NULL.
56 * For non-instanced drawing, instanceCount should be 1.
57 * When the min/max element indexes aren't known, minIndex should be 0
58 * and maxIndex should be ~0.
59 */
60 void
softpipe_draw_vbo(struct pipe_context * pipe,const struct pipe_draw_info * info)61 softpipe_draw_vbo(struct pipe_context *pipe,
62 const struct pipe_draw_info *info)
63 {
64 struct softpipe_context *sp = softpipe_context(pipe);
65 struct draw_context *draw = sp->draw;
66 const void *mapped_indices = NULL;
67 unsigned i;
68
69 if (!softpipe_check_render_cond(sp))
70 return;
71
72 if (info->indirect) {
73 util_draw_indirect(pipe, info);
74 return;
75 }
76
77 sp->reduced_api_prim = u_reduced_prim(info->mode);
78
79 if (sp->dirty) {
80 softpipe_update_derived(sp, sp->reduced_api_prim);
81 }
82
83 /* Map vertex buffers */
84 for (i = 0; i < sp->num_vertex_buffers; i++) {
85 const void *buf = sp->vertex_buffer[i].is_user_buffer ?
86 sp->vertex_buffer[i].buffer.user : NULL;
87 size_t size = ~0;
88 if (!buf) {
89 if (!sp->vertex_buffer[i].buffer.resource) {
90 continue;
91 }
92 buf = softpipe_resource_data(sp->vertex_buffer[i].buffer.resource);
93 size = sp->vertex_buffer[i].buffer.resource->width0;
94 }
95 draw_set_mapped_vertex_buffer(draw, i, buf, size);
96 }
97
98 /* Map index buffer, if present */
99 if (info->index_size) {
100 unsigned available_space = ~0;
101 mapped_indices = info->has_user_indices ? info->index.user : NULL;
102 if (!mapped_indices) {
103 mapped_indices = softpipe_resource_data(info->index.resource);
104 available_space = info->index.resource->width0;
105 }
106
107 draw_set_indexes(draw,
108 (ubyte *) mapped_indices,
109 info->index_size, available_space);
110 }
111
112
113 for (i = 0; i < sp->num_so_targets; i++) {
114 void *buf = 0;
115 if (sp->so_targets[i]) {
116 buf = softpipe_resource(sp->so_targets[i]->target.buffer)->data;
117 sp->so_targets[i]->mapping = buf;
118 }
119 }
120
121 draw_set_mapped_so_targets(draw, sp->num_so_targets,
122 sp->so_targets);
123
124 if (softpipe_screen(sp->pipe.screen)->use_llvm) {
125 softpipe_prepare_vertex_sampling(sp,
126 sp->num_sampler_views[PIPE_SHADER_VERTEX],
127 sp->sampler_views[PIPE_SHADER_VERTEX]);
128 softpipe_prepare_geometry_sampling(sp,
129 sp->num_sampler_views[PIPE_SHADER_GEOMETRY],
130 sp->sampler_views[PIPE_SHADER_GEOMETRY]);
131 }
132
133 if (sp->gs && !sp->gs->shader.tokens) {
134 /* we have an empty geometry shader with stream output, so
135 attach the stream output info to the current vertex shader */
136 if (sp->vs) {
137 draw_vs_attach_so(sp->vs->draw_data, &sp->gs->shader.stream_output);
138 }
139 }
140 draw_collect_pipeline_statistics(draw,
141 sp->active_statistics_queries > 0);
142
143 /* draw! */
144 draw_vbo(draw, info);
145
146 /* unmap vertex/index buffers - will cause draw module to flush */
147 for (i = 0; i < sp->num_vertex_buffers; i++) {
148 draw_set_mapped_vertex_buffer(draw, i, NULL, 0);
149 }
150 if (mapped_indices) {
151 draw_set_indexes(draw, NULL, 0, 0);
152 }
153
154 draw_set_mapped_so_targets(draw, 0, NULL);
155
156 if (softpipe_screen(sp->pipe.screen)->use_llvm) {
157 softpipe_cleanup_vertex_sampling(sp);
158 softpipe_cleanup_geometry_sampling(sp);
159 }
160
161 /*
162 * TODO: Flush only when a user vertex/index buffer is present
163 * (or even better, modify draw module to do this
164 * internally when this condition is seen?)
165 */
166 draw_flush(draw);
167
168 /* Note: leave drawing surfaces mapped */
169 sp->dirty_render_cache = TRUE;
170 }
171