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 unsigned available_space
= ~0;
85 mapped_indices
= lp
->index_buffer
.user_buffer
;
86 if (!mapped_indices
) {
87 mapped_indices
= llvmpipe_resource_data(lp
->index_buffer
.buffer
);
88 if (lp
->index_buffer
.buffer
->width0
> lp
->index_buffer
.offset
)
90 (lp
->index_buffer
.buffer
->width0
- lp
->index_buffer
.offset
);
94 draw_set_indexes(draw
,
95 (ubyte
*) mapped_indices
+ lp
->index_buffer
.offset
,
96 lp
->index_buffer
.index_size
, available_space
);
99 for (i
= 0; i
< lp
->num_so_targets
; i
++) {
101 if (lp
->so_targets
[i
]) {
102 buf
= llvmpipe_resource(lp
->so_targets
[i
]->target
.buffer
)->data
;
103 lp
->so_targets
[i
]->mapping
= buf
;
106 draw_set_mapped_so_targets(draw
, lp
->num_so_targets
,
109 llvmpipe_prepare_vertex_sampling(lp
,
110 lp
->num_sampler_views
[PIPE_SHADER_VERTEX
],
111 lp
->sampler_views
[PIPE_SHADER_VERTEX
]);
112 llvmpipe_prepare_geometry_sampling(lp
,
113 lp
->num_sampler_views
[PIPE_SHADER_GEOMETRY
],
114 lp
->sampler_views
[PIPE_SHADER_GEOMETRY
]);
115 if (lp
->gs
&& !lp
->gs
->shader
.tokens
) {
116 /* we have an empty geometry shader with stream output, so
117 attach the stream output info to the current vertex shader */
119 draw_vs_attach_so(lp
->vs
->draw_data
, &lp
->gs
->shader
.stream_output
);
122 draw_collect_pipeline_statistics(draw
,
123 lp
->active_statistics_queries
> 0);
126 draw_vbo(draw
, info
);
129 * unmap vertex/index buffers
131 for (i
= 0; i
< lp
->num_vertex_buffers
; i
++) {
132 draw_set_mapped_vertex_buffer(draw
, i
, NULL
, 0);
134 if (mapped_indices
) {
135 draw_set_indexes(draw
, NULL
, 0, 0);
137 draw_set_mapped_so_targets(draw
, 0, NULL
);
139 if (lp
->gs
&& !lp
->gs
->shader
.tokens
) {
140 /* we have attached stream output to the vs for rendering,
143 draw_vs_reset_so(lp
->vs
->draw_data
);
147 llvmpipe_cleanup_vertex_sampling(lp
);
148 llvmpipe_cleanup_geometry_sampling(lp
);
151 * TODO: Flush only when a user vertex/index buffer is present
152 * (or even better, modify draw module to do this
153 * internally when this condition is seen?)
160 llvmpipe_init_draw_funcs(struct llvmpipe_context
*llvmpipe
)
162 llvmpipe
->pipe
.draw_vbo
= llvmpipe_draw_vbo
;