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"
41 #include "draw/draw_context.h"
46 * Draw vertex arrays, with optional indexing.
47 * Basically, map the vertex buffers (and drawing surfaces), then hand off
48 * the drawing to the 'draw' module.
51 llvmpipe_draw_range_elements(struct pipe_context
*pipe
,
52 struct pipe_resource
*indexBuffer
,
57 unsigned mode
, unsigned start
, unsigned count
)
59 struct llvmpipe_context
*lp
= llvmpipe_context(pipe
);
60 struct draw_context
*draw
= lp
->draw
;
64 llvmpipe_update_derived( lp
);
69 for (i
= 0; i
< lp
->num_vertex_buffers
; i
++) {
70 void *buf
= llvmpipe_resource_data(lp
->vertex_buffer
[i
].buffer
);
71 draw_set_mapped_vertex_buffer(draw
, i
, buf
);
74 /* Map index buffer, if present */
76 void *mapped_indexes
= llvmpipe_resource_data(indexBuffer
);
77 draw_set_mapped_element_buffer_range(draw
, indexSize
, indexBias
,
83 /* no index/element buffer */
84 draw_set_mapped_element_buffer_range(draw
, 0, 0, start
,
85 start
+ count
- 1, NULL
);
89 draw_arrays(draw
, mode
, start
, count
);
92 * unmap vertex/index buffers
94 for (i
= 0; i
< lp
->num_vertex_buffers
; i
++) {
95 draw_set_mapped_vertex_buffer(draw
, i
, NULL
);
98 draw_set_mapped_element_buffer(draw
, 0, 0, NULL
);
102 * TODO: Flush only when a user vertex/index buffer is present
103 * (or even better, modify draw module to do this
104 * internally when this condition is seen?)
111 llvmpipe_draw_elements(struct pipe_context
*pipe
,
112 struct pipe_resource
*indexBuffer
,
115 unsigned mode
, unsigned start
, unsigned count
)
117 llvmpipe_draw_range_elements( pipe
, indexBuffer
,
118 indexSize
, indexBias
,
120 mode
, start
, count
);
125 llvmpipe_draw_arrays(struct pipe_context
*pipe
, unsigned mode
,
126 unsigned start
, unsigned count
)
128 llvmpipe_draw_elements(pipe
, NULL
, 0, 0, mode
, start
, count
);
133 llvmpipe_init_draw_funcs(struct llvmpipe_context
*llvmpipe
)
135 llvmpipe
->pipe
.draw_arrays
= llvmpipe_draw_arrays
;
136 llvmpipe
->pipe
.draw_elements
= llvmpipe_draw_elements
;
137 llvmpipe
->pipe
.draw_range_elements
= llvmpipe_draw_range_elements
;