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 struct svga_constbuf
36 {
37 unsigned type;
38 float (*data)[4];
39 unsigned count;
40 };
41
42
43
44 static void
svga_set_constant_buffer(struct pipe_context * pipe,enum pipe_shader_type shader,uint index,const struct pipe_constant_buffer * cb)45 svga_set_constant_buffer(struct pipe_context *pipe,
46 enum pipe_shader_type shader, uint index,
47 const struct pipe_constant_buffer *cb)
48 {
49 struct svga_screen *svgascreen = svga_screen(pipe->screen);
50 struct svga_context *svga = svga_context(pipe);
51 struct pipe_resource *buf = cb ? cb->buffer : NULL;
52 unsigned buffer_size = 0;
53
54 if (cb) {
55 buffer_size = cb->buffer_size;
56 if (cb->user_buffer) {
57 buf = svga_user_buffer_create(pipe->screen,
58 (void *) cb->user_buffer,
59 cb->buffer_size,
60 PIPE_BIND_CONSTANT_BUFFER);
61 }
62 }
63
64 assert(shader < PIPE_SHADER_TYPES);
65 assert(index < ARRAY_SIZE(svga->curr.constbufs[shader]));
66 assert(index < svgascreen->max_const_buffers);
67 (void) svgascreen;
68
69 pipe_resource_reference(&svga->curr.constbufs[shader][index].buffer, buf);
70
71 /* Make sure the constant buffer size to be updated is within the
72 * limit supported by the device.
73 */
74 svga->curr.constbufs[shader][index].buffer_size =
75 MIN2(buffer_size, SVGA_MAX_CONST_BUF_SIZE);
76
77 svga->curr.constbufs[shader][index].buffer_offset = cb ? cb->buffer_offset : 0;
78 svga->curr.constbufs[shader][index].user_buffer = NULL; /* not used */
79
80 if (index == 0) {
81 if (shader == PIPE_SHADER_FRAGMENT)
82 svga->dirty |= SVGA_NEW_FS_CONSTS;
83 else if (shader == PIPE_SHADER_VERTEX)
84 svga->dirty |= SVGA_NEW_VS_CONSTS;
85 else if (shader == PIPE_SHADER_GEOMETRY)
86 svga->dirty |= SVGA_NEW_GS_CONSTS;
87 else if (shader == PIPE_SHADER_TESS_CTRL)
88 svga->dirty |= SVGA_NEW_TCS_CONSTS;
89 else if (shader == PIPE_SHADER_TESS_EVAL)
90 svga->dirty |= SVGA_NEW_TES_CONSTS;
91 } else {
92 if (shader == PIPE_SHADER_FRAGMENT)
93 svga->dirty |= SVGA_NEW_FS_CONST_BUFFER;
94 else if (shader == PIPE_SHADER_VERTEX)
95 svga->dirty |= SVGA_NEW_VS_CONST_BUFFER;
96 else if (shader == PIPE_SHADER_GEOMETRY)
97 svga->dirty |= SVGA_NEW_GS_CONST_BUFFER;
98 else if (shader == PIPE_SHADER_TESS_CTRL)
99 svga->dirty |= SVGA_NEW_TCS_CONST_BUFFER;
100 else if (shader == PIPE_SHADER_TESS_EVAL)
101 svga->dirty |= SVGA_NEW_TES_CONST_BUFFER;
102
103 /* update bitmask of dirty const buffers */
104 svga->state.dirty_constbufs[shader] |= (1 << index);
105 }
106
107 if (cb && cb->user_buffer) {
108 pipe_resource_reference(&buf, NULL);
109 }
110 }
111
112
113 void
svga_init_constbuffer_functions(struct svga_context * svga)114 svga_init_constbuffer_functions(struct svga_context *svga)
115 {
116 svga->pipe.set_constant_buffer = svga_set_constant_buffer;
117 }
118
119