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
30 #include "svga_context.h"
31 #include "svga_resource_buffer.h"
32
33
34 struct svga_constbuf
35 {
36 unsigned type;
37 float (*data)[4];
38 unsigned count;
39 };
40
41
42
43 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)44 svga_set_constant_buffer(struct pipe_context *pipe,
45 enum pipe_shader_type shader, uint index,
46 bool take_ownership,
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
57 if (cb->user_buffer) {
58 buf = svga_user_buffer_create(pipe->screen,
59 (void *) cb->user_buffer,
60 cb->buffer_size,
61 PIPE_BIND_CONSTANT_BUFFER);
62 }
63 }
64
65 assert(shader < PIPE_SHADER_TYPES);
66 assert(index < ARRAY_SIZE(svga->curr.constbufs[shader]));
67 assert(index < svgascreen->max_const_buffers);
68 (void) svgascreen;
69
70 if (take_ownership) {
71 pipe_resource_reference(&svga->curr.constbufs[shader][index].buffer, NULL);
72 svga->curr.constbufs[shader][index].buffer = buf;
73 } else {
74 pipe_resource_reference(&svga->curr.constbufs[shader][index].buffer, buf);
75 }
76
77 /* Make sure the constant buffer size to be updated is within the
78 * limit supported by the device.
79 */
80 svga->curr.constbufs[shader][index].buffer_size =
81 MIN2(buffer_size, SVGA_MAX_CONST_BUF_SIZE);
82
83 svga->curr.constbufs[shader][index].buffer_offset = cb ? cb->buffer_offset : 0;
84 svga->curr.constbufs[shader][index].user_buffer = NULL; /* not used */
85
86 if (index == 0) {
87 if (shader == PIPE_SHADER_FRAGMENT)
88 svga->dirty |= SVGA_NEW_FS_CONSTS;
89 else if (shader == PIPE_SHADER_VERTEX)
90 svga->dirty |= SVGA_NEW_VS_CONSTS;
91 else if (shader == PIPE_SHADER_GEOMETRY)
92 svga->dirty |= SVGA_NEW_GS_CONSTS;
93 else if (shader == PIPE_SHADER_TESS_CTRL)
94 svga->dirty |= SVGA_NEW_TCS_CONSTS;
95 else if (shader == PIPE_SHADER_TESS_EVAL)
96 svga->dirty |= SVGA_NEW_TES_CONSTS;
97 else if (shader == PIPE_SHADER_COMPUTE)
98 svga->dirty |= SVGA_NEW_CS_CONSTS;
99 } else {
100 if (shader == PIPE_SHADER_FRAGMENT)
101 svga->dirty |= SVGA_NEW_FS_CONST_BUFFER;
102 else if (shader == PIPE_SHADER_VERTEX)
103 svga->dirty |= SVGA_NEW_VS_CONST_BUFFER;
104 else if (shader == PIPE_SHADER_GEOMETRY)
105 svga->dirty |= SVGA_NEW_GS_CONST_BUFFER;
106 else if (shader == PIPE_SHADER_TESS_CTRL)
107 svga->dirty |= SVGA_NEW_TCS_CONST_BUFFER;
108 else if (shader == PIPE_SHADER_TESS_EVAL)
109 svga->dirty |= SVGA_NEW_TES_CONST_BUFFER;
110 else if (shader == PIPE_SHADER_COMPUTE)
111 svga->dirty |= SVGA_NEW_CS_CONST_BUFFER;
112
113 /* update bitmask of dirty const buffers */
114 svga->state.dirty_constbufs[shader] |= (1 << index);
115
116 /* purge any stale rawbuf srv */
117 svga_destroy_rawbuf_srv(svga);
118 }
119
120 if (cb && cb->user_buffer) {
121 pipe_resource_reference(&buf, NULL);
122 }
123 }
124
125
126 void
svga_init_constbuffer_functions(struct svga_context * svga)127 svga_init_constbuffer_functions(struct svga_context *svga)
128 {
129 svga->pipe.set_constant_buffer = svga_set_constant_buffer;
130 }
131
132