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 
38 struct svga_constbuf
39 {
40    unsigned type;
41    float (*data)[4];
42    unsigned count;
43 };
44 
45 
46 
svga_set_constant_buffer(struct pipe_context * pipe,uint shader,uint index,struct pipe_constant_buffer * cb)47 static 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 
svga_init_constbuffer_functions(struct svga_context * svga)79 void svga_init_constbuffer_functions( struct svga_context *svga )
80 {
81    svga->pipe.set_constant_buffer = svga_set_constant_buffer;
82 }
83 
84