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
35struct svga_constbuf
36{
37   unsigned type;
38   float (*data)[4];
39   unsigned count;
40};
41
42
43
44static void
45svga_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
127void
128svga_init_constbuffer_functions(struct svga_context *svga)
129{
130   svga->pipe.set_constant_buffer = svga_set_constant_buffer;
131}
132
133