Merge the lp-surface-tiling branch into master.
[mesa.git] / src / gallium / drivers / llvmpipe / lp_draw_arrays.c
1 /**************************************************************************
2 *
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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 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.
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_prim.h"
37
38 #include "lp_context.h"
39 #include "lp_state.h"
40
41 #include "draw/draw_context.h"
42
43
44
45 void
46 llvmpipe_draw_arrays(struct pipe_context *pipe, unsigned mode,
47 unsigned start, unsigned count)
48 {
49 llvmpipe_draw_elements(pipe, NULL, 0, mode, start, count);
50 }
51
52
53 /**
54 * Draw vertex arrays, with optional indexing.
55 * Basically, map the vertex buffers (and drawing surfaces), then hand off
56 * the drawing to the 'draw' module.
57 */
58 void
59 llvmpipe_draw_range_elements(struct pipe_context *pipe,
60 struct pipe_resource *indexBuffer,
61 unsigned indexSize,
62 unsigned min_index,
63 unsigned max_index,
64 unsigned mode, unsigned start, unsigned count)
65 {
66 struct llvmpipe_context *lp = llvmpipe_context(pipe);
67 struct draw_context *draw = lp->draw;
68 unsigned i;
69
70 if (lp->dirty)
71 llvmpipe_update_derived( lp );
72
73 /*
74 * Map vertex buffers
75 */
76 for (i = 0; i < lp->num_vertex_buffers; i++) {
77 void *buf = llvmpipe_resource_data(lp->vertex_buffer[i].buffer);
78 draw_set_mapped_vertex_buffer(draw, i, buf);
79 }
80
81 /* Map index buffer, if present */
82 if (indexBuffer) {
83 void *mapped_indexes = llvmpipe_resource_data(indexBuffer);
84 draw_set_mapped_element_buffer_range(draw, indexSize,
85 min_index,
86 max_index,
87 mapped_indexes);
88 }
89 else {
90 /* no index/element buffer */
91 draw_set_mapped_element_buffer_range(draw, 0, start,
92 start + count - 1, NULL);
93 }
94
95 /* draw! */
96 draw_arrays(draw, mode, start, count);
97
98 /*
99 * unmap vertex/index buffers
100 */
101 for (i = 0; i < lp->num_vertex_buffers; i++) {
102 draw_set_mapped_vertex_buffer(draw, i, NULL);
103 }
104 if (indexBuffer) {
105 draw_set_mapped_element_buffer(draw, 0, NULL);
106 }
107
108 /*
109 * TODO: Flush only when a user vertex/index buffer is present
110 * (or even better, modify draw module to do this
111 * internally when this condition is seen?)
112 */
113 draw_flush(draw);
114 }
115
116
117 void
118 llvmpipe_draw_elements(struct pipe_context *pipe,
119 struct pipe_resource *indexBuffer,
120 unsigned indexSize,
121 unsigned mode, unsigned start, unsigned count)
122 {
123 llvmpipe_draw_range_elements( pipe, indexBuffer,
124 indexSize,
125 0, 0xffffffff,
126 mode, start, count );
127 }
128