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,unsigned drawid_offset,const struct pipe_draw_indirect_info * indirect,const struct pipe_draw_start_count_bias * draws,unsigned num_draws)61 softpipe_draw_vbo(struct pipe_context *pipe,
62 const struct pipe_draw_info *info,
63 unsigned drawid_offset,
64 const struct pipe_draw_indirect_info *indirect,
65 const struct pipe_draw_start_count_bias *draws,
66 unsigned num_draws)
67 {
68 if (num_draws > 1) {
69 util_draw_multi(pipe, info, drawid_offset, indirect, draws, num_draws);
70 return;
71 }
72
73 if (!indirect && (!draws[0].count || !info->instance_count))
74 return;
75
76 struct softpipe_context *sp = softpipe_context(pipe);
77 struct draw_context *draw = sp->draw;
78 const void *mapped_indices = NULL;
79 unsigned i;
80
81 if (!softpipe_check_render_cond(sp))
82 return;
83
84 if (indirect && indirect->buffer) {
85 util_draw_indirect(pipe, info, indirect);
86 return;
87 }
88
89 sp->reduced_api_prim = u_reduced_prim(info->mode);
90
91 if (sp->dirty) {
92 softpipe_update_derived(sp, sp->reduced_api_prim);
93 }
94
95 /* Map vertex buffers */
96 for (i = 0; i < sp->num_vertex_buffers; i++) {
97 const void *buf = sp->vertex_buffer[i].is_user_buffer ?
98 sp->vertex_buffer[i].buffer.user : NULL;
99 size_t size = ~0;
100 if (!buf) {
101 if (!sp->vertex_buffer[i].buffer.resource) {
102 continue;
103 }
104 buf = softpipe_resource_data(sp->vertex_buffer[i].buffer.resource);
105 size = sp->vertex_buffer[i].buffer.resource->width0;
106 }
107 draw_set_mapped_vertex_buffer(draw, i, buf, size);
108 }
109
110 /* Map index buffer, if present */
111 if (info->index_size) {
112 unsigned available_space = ~0;
113 mapped_indices = info->has_user_indices ? info->index.user : NULL;
114 if (!mapped_indices) {
115 mapped_indices = softpipe_resource_data(info->index.resource);
116 available_space = info->index.resource->width0;
117 }
118
119 draw_set_indexes(draw,
120 (ubyte *) mapped_indices,
121 info->index_size, available_space);
122 }
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, drawid_offset, indirect, draws, num_draws, 0);
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 if (softpipe_screen(sp->pipe.screen)->use_llvm) {
155 softpipe_cleanup_vertex_sampling(sp);
156 softpipe_cleanup_geometry_sampling(sp);
157 }
158
159 /*
160 * TODO: Flush only when a user vertex/index buffer is present
161 * (or even better, modify draw module to do this
162 * internally when this condition is seen?)
163 */
164 draw_flush(draw);
165
166 /* Note: leave drawing surfaces mapped */
167 sp->dirty_render_cache = TRUE;
168 }
169