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      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 {
98      if (shader == PIPE_SHADER_FRAGMENT)
99         svga->dirty |= SVGA_NEW_FS_CONST_BUFFER;
100      else if (shader == PIPE_SHADER_VERTEX)
101         svga->dirty |= SVGA_NEW_VS_CONST_BUFFER;
102      else if (shader == PIPE_SHADER_GEOMETRY)
103         svga->dirty |= SVGA_NEW_GS_CONST_BUFFER;
104      else if (shader == PIPE_SHADER_TESS_CTRL)
105         svga->dirty |= SVGA_NEW_TCS_CONST_BUFFER;
106      else if (shader == PIPE_SHADER_TESS_EVAL)
107         svga->dirty |= SVGA_NEW_TES_CONST_BUFFER;
108
109      /* update bitmask of dirty const buffers */
110      svga->state.dirty_constbufs[shader] |= (1 << index);
111   }
112
113   if (cb && cb->user_buffer) {
114      pipe_resource_reference(&buf, NULL);
115   }
116}
117
118
119void
120svga_init_constbuffer_functions(struct svga_context *svga)
121{
122   svga->pipe.set_constant_buffer = svga_set_constant_buffer;
123}
124
125