1 /**************************************************************************
3 * Copyright 2007 VMware, Inc.
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 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.
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_data(sp
->vertex_buffer
[i
].buffer
);
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 unsigned available_space
= ~0;
93 mapped_indices
= sp
->index_buffer
.user_buffer
;
94 if (!mapped_indices
) {
95 mapped_indices
= softpipe_resource_data(sp
->index_buffer
.buffer
);
96 if (sp
->index_buffer
.buffer
->width0
> sp
->index_buffer
.offset
)
98 (sp
->index_buffer
.buffer
->width0
- sp
->index_buffer
.offset
);
103 draw_set_indexes(draw
,
104 (ubyte
*) mapped_indices
+ sp
->index_buffer
.offset
,
105 sp
->index_buffer
.index_size
, available_space
);
109 for (i
= 0; i
< sp
->num_so_targets
; i
++) {
111 if (sp
->so_targets
[i
]) {
112 buf
= softpipe_resource(sp
->so_targets
[i
]->target
.buffer
)->data
;
113 sp
->so_targets
[i
]->mapping
= buf
;
117 draw_set_mapped_so_targets(draw
, sp
->num_so_targets
,
120 if (sp
->gs
&& !sp
->gs
->shader
.tokens
) {
121 /* we have an empty geometry shader with stream output, so
122 attach the stream output info to the current vertex shader */
124 draw_vs_attach_so(sp
->vs
->draw_data
, &sp
->gs
->shader
.stream_output
);
127 draw_collect_pipeline_statistics(draw
,
128 sp
->active_statistics_queries
> 0);
131 draw_vbo(draw
, info
);
133 /* unmap vertex/index buffers - will cause draw module to flush */
134 for (i
= 0; i
< sp
->num_vertex_buffers
; i
++) {
135 draw_set_mapped_vertex_buffer(draw
, i
, NULL
, 0);
137 if (mapped_indices
) {
138 draw_set_indexes(draw
, NULL
, 0, 0);
141 draw_set_mapped_so_targets(draw
, 0, NULL
);
144 * TODO: Flush only when a user vertex/index buffer is present
145 * (or even better, modify draw module to do this
146 * internally when this condition is seen?)
150 /* Note: leave drawing surfaces mapped */
151 sp
->dirty_render_cache
= TRUE
;