1/**********************************************************
2 * Copyright 2008-2009 VMware, Inc.  All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person
5 * obtaining a copy of this software and associated documentation
6 * files (the "Software"), to deal in the Software without
7 * restriction, including without limitation the rights to use, copy,
8 * modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 *
24 **********************************************************/
25
26#include "util/u_inlines.h"
27#include "pipe/p_defines.h"
28#include "util/u_math.h"
29#include "tgsi/tgsi_parse.h"
30
31#include "svga_context.h"
32#include "svga_resource_buffer.h"
33
34/***********************************************************************
35 * Constant buffers
36 */
37
38struct svga_constbuf
39{
40   unsigned type;
41   float (*data)[4];
42   unsigned count;
43};
44
45
46
47static void svga_set_constant_buffer(struct pipe_context *pipe,
48                                     uint shader, uint index,
49                                     struct pipe_constant_buffer *cb)
50{
51   struct svga_context *svga = svga_context(pipe);
52   struct pipe_resource *buf = cb ? cb->buffer : NULL;
53
54   if (cb && cb->user_buffer) {
55      buf = svga_user_buffer_create(pipe->screen,
56                                    (void *) cb->user_buffer,
57                                    cb->buffer_size,
58                                    PIPE_BIND_CONSTANT_BUFFER);
59   }
60
61   assert(shader < PIPE_SHADER_TYPES);
62   assert(index == 0);
63
64   pipe_resource_reference( &svga->curr.cb[shader],
65                          buf );
66
67   if (shader == PIPE_SHADER_FRAGMENT)
68      svga->dirty |= SVGA_NEW_FS_CONST_BUFFER;
69   else
70      svga->dirty |= SVGA_NEW_VS_CONST_BUFFER;
71
72   if (cb && cb->user_buffer) {
73      pipe_resource_reference(&buf, NULL);
74   }
75}
76
77
78
79void svga_init_constbuffer_functions( struct svga_context *svga )
80{
81   svga->pipe.set_constant_buffer = svga_set_constant_buffer;
82}
83
84