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,bool take_ownership,const struct pipe_constant_buffer * cb)45 svga_set_constant_buffer(struct pipe_context *pipe,
46 enum pipe_shader_type shader, uint index,
47 bool take_ownership,
48 const struct pipe_constant_buffer *cb)
49 {
50 struct svga_screen *svgascreen = svga_screen(pipe->screen);
51 struct svga_context *svga = svga_context(pipe);
52 struct pipe_resource *buf = cb ? cb->buffer : NULL;
53 unsigned buffer_size = 0;
54
55 if (cb) {
56 buffer_size = cb->buffer_size;
57
58 if (cb->user_buffer) {
59 buf = svga_user_buffer_create(pipe->screen,
60 (void *) cb->user_buffer,
61 cb->buffer_size,
62 PIPE_BIND_CONSTANT_BUFFER);
63 }
64 }
65
66 assert(shader < PIPE_SHADER_TYPES);
67 assert(index < ARRAY_SIZE(svga->curr.constbufs[shader]));
68 assert(index < svgascreen->max_const_buffers);
69 (void) svgascreen;
70
71 if (take_ownership) {
72 pipe_resource_reference(&svga->curr.constbufs[shader][index].buffer, NULL);
73 svga->curr.constbufs[shader][index].buffer = buf;
74 } else {
75 pipe_resource_reference(&svga->curr.constbufs[shader][index].buffer, buf);
76 }
77
78 /* Make sure the constant buffer size to be updated is within the
79 * limit supported by the device.
80 */
81 svga->curr.constbufs[shader][index].buffer_size =
82 MIN2(buffer_size, SVGA_MAX_CONST_BUF_SIZE);
83
84 svga->curr.constbufs[shader][index].buffer_offset = cb ? cb->buffer_offset : 0;
85 svga->curr.constbufs[shader][index].user_buffer = NULL; /* not used */
86
87 if (index == 0) {
88 if (shader == PIPE_SHADER_FRAGMENT)
89 svga->dirty |= SVGA_NEW_FS_CONSTS;
90 else if (shader == PIPE_SHADER_VERTEX)
91 svga->dirty |= SVGA_NEW_VS_CONSTS;
92 else if (shader == PIPE_SHADER_GEOMETRY)
93 svga->dirty |= SVGA_NEW_GS_CONSTS;
94 else if (shader == PIPE_SHADER_TESS_CTRL)
95 svga->dirty |= SVGA_NEW_TCS_CONSTS;
96 else if (shader == PIPE_SHADER_TESS_EVAL)
97 svga->dirty |= SVGA_NEW_TES_CONSTS;
98 else if (shader == PIPE_SHADER_COMPUTE)
99 svga->dirty |= SVGA_NEW_CS_CONSTS;
100 } else {
101 if (shader == PIPE_SHADER_FRAGMENT)
102 svga->dirty |= SVGA_NEW_FS_CONST_BUFFER;
103 else if (shader == PIPE_SHADER_VERTEX)
104 svga->dirty |= SVGA_NEW_VS_CONST_BUFFER;
105 else if (shader == PIPE_SHADER_GEOMETRY)
106 svga->dirty |= SVGA_NEW_GS_CONST_BUFFER;
107 else if (shader == PIPE_SHADER_TESS_CTRL)
108 svga->dirty |= SVGA_NEW_TCS_CONST_BUFFER;
109 else if (shader == PIPE_SHADER_TESS_EVAL)
110 svga->dirty |= SVGA_NEW_TES_CONST_BUFFER;
111 else if (shader == PIPE_SHADER_COMPUTE)
112 svga->dirty |= SVGA_NEW_CS_CONST_BUFFER;
113
114 /* update bitmask of dirty const buffers */
115 svga->state.dirty_constbufs[shader] |= (1 << index);
116
117 /* purge any stale rawbuf srv */
118 svga_destroy_rawbuf_srv(svga);
119 }
120
121 if (cb && cb->user_buffer) {
122 pipe_resource_reference(&buf, NULL);
123 }
124 }
125
126
127 void
svga_init_constbuffer_functions(struct svga_context * svga)128 svga_init_constbuffer_functions(struct svga_context *svga)
129 {
130 svga->pipe.set_constant_buffer = svga_set_constant_buffer;
131 }
132
133