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_draw.h"
37 #include "util/u_prim.h"
39 #include "lp_context.h"
43 #include "draw/draw_context.h"
48 * Draw vertex arrays, with optional indexing, optional instancing.
49 * All the other drawing functions are implemented in terms of this function.
50 * Basically, map the vertex buffers (and drawing surfaces), then hand off
51 * the drawing to the 'draw' module.
54 llvmpipe_draw_vbo(struct pipe_context
*pipe
, const struct pipe_draw_info
*info
)
56 struct llvmpipe_context
*lp
= llvmpipe_context(pipe
);
57 struct draw_context
*draw
= lp
->draw
;
58 const void *mapped_indices
= NULL
;
61 if (!llvmpipe_check_render_cond(lp
))
65 util_draw_indirect(pipe
, info
);
70 llvmpipe_update_derived( lp
);
75 for (i
= 0; i
< lp
->num_vertex_buffers
; i
++) {
76 const void *buf
= lp
->vertex_buffer
[i
].user_buffer
;
79 if (!lp
->vertex_buffer
[i
].buffer
) {
82 buf
= llvmpipe_resource_data(lp
->vertex_buffer
[i
].buffer
);
83 size
= lp
->vertex_buffer
[i
].buffer
->width0
;
85 draw_set_mapped_vertex_buffer(draw
, i
, buf
, size
);
88 /* Map index buffer, if present */
90 unsigned available_space
= ~0;
91 mapped_indices
= lp
->index_buffer
.user_buffer
;
92 if (!mapped_indices
) {
93 mapped_indices
= llvmpipe_resource_data(lp
->index_buffer
.buffer
);
94 if (lp
->index_buffer
.buffer
->width0
> lp
->index_buffer
.offset
)
96 (lp
->index_buffer
.buffer
->width0
- lp
->index_buffer
.offset
);
100 draw_set_indexes(draw
,
101 (ubyte
*) mapped_indices
+ lp
->index_buffer
.offset
,
102 lp
->index_buffer
.index_size
, available_space
);
105 for (i
= 0; i
< lp
->num_so_targets
; i
++) {
107 if (lp
->so_targets
[i
]) {
108 buf
= llvmpipe_resource(lp
->so_targets
[i
]->target
.buffer
)->data
;
109 lp
->so_targets
[i
]->mapping
= buf
;
112 draw_set_mapped_so_targets(draw
, lp
->num_so_targets
,
115 llvmpipe_prepare_vertex_sampling(lp
,
116 lp
->num_sampler_views
[PIPE_SHADER_VERTEX
],
117 lp
->sampler_views
[PIPE_SHADER_VERTEX
]);
118 llvmpipe_prepare_geometry_sampling(lp
,
119 lp
->num_sampler_views
[PIPE_SHADER_GEOMETRY
],
120 lp
->sampler_views
[PIPE_SHADER_GEOMETRY
]);
121 if (lp
->gs
&& lp
->gs
->no_tokens
) {
122 /* we have an empty geometry shader with stream output, so
123 attach the stream output info to the current vertex shader */
125 draw_vs_attach_so(lp
->vs
, &lp
->gs
->stream_output
);
128 draw_collect_pipeline_statistics(draw
,
129 lp
->active_statistics_queries
> 0);
132 draw_vbo(draw
, info
);
135 * unmap vertex/index buffers
137 for (i
= 0; i
< lp
->num_vertex_buffers
; i
++) {
138 draw_set_mapped_vertex_buffer(draw
, i
, NULL
, 0);
140 if (mapped_indices
) {
141 draw_set_indexes(draw
, NULL
, 0, 0);
143 draw_set_mapped_so_targets(draw
, 0, NULL
);
145 if (lp
->gs
&& lp
->gs
->no_tokens
) {
146 /* we have attached stream output to the vs for rendering,
149 draw_vs_reset_so(lp
->vs
);
153 llvmpipe_cleanup_vertex_sampling(lp
);
154 llvmpipe_cleanup_geometry_sampling(lp
);
157 * TODO: Flush only when a user vertex/index buffer is present
158 * (or even better, modify draw module to do this
159 * internally when this condition is seen?)
166 llvmpipe_init_draw_funcs(struct llvmpipe_context
*llvmpipe
)
168 llvmpipe
->pipe
.draw_vbo
= llvmpipe_draw_vbo
;