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 "util/u_math.h"
28#include "util/u_memory.h"
29#include "util/u_bitmask.h"
30#include "tgsi/tgsi_parse.h"
31#include "draw/draw_context.h"
32
33#include "svga_context.h"
34#include "svga_tgsi.h"
35#include "svga_hw_reg.h"
36#include "svga_cmd.h"
37#include "svga_debug.h"
38
39
40/***********************************************************************
41 * Fragment shaders
42 */
43
44static void *
45svga_create_fs_state(struct pipe_context *pipe,
46                     const struct pipe_shader_state *templ)
47{
48   struct svga_context *svga = svga_context(pipe);
49   struct svga_fragment_shader *fs;
50
51   fs = CALLOC_STRUCT(svga_fragment_shader);
52   if (!fs)
53      return NULL;
54
55   fs->base.tokens = tgsi_dup_tokens(templ->tokens);
56
57   /* Collect basic info that we'll need later:
58    */
59   tgsi_scan_shader(fs->base.tokens, &fs->base.info);
60
61   fs->base.id = svga->debug.shader_id++;
62
63   fs->generic_inputs = svga_get_generic_inputs_mask(&fs->base.info);
64
65   svga_remap_generics(fs->generic_inputs, fs->generic_remap_table);
66
67   fs->draw_shader = draw_create_fragment_shader(svga->swtnl.draw, templ);
68
69   if (SVGA_DEBUG & DEBUG_TGSI || 0) {
70      debug_printf("%s id: %u, inputs: %u, outputs: %u\n",
71                   __FUNCTION__, fs->base.id,
72                   fs->base.info.num_inputs, fs->base.info.num_outputs);
73   }
74
75   return fs;
76}
77
78static void
79svga_bind_fs_state(struct pipe_context *pipe, void *shader)
80{
81   struct svga_fragment_shader *fs = (struct svga_fragment_shader *) shader;
82   struct svga_context *svga = svga_context(pipe);
83
84   svga->curr.fs = fs;
85   svga->dirty |= SVGA_NEW_FS;
86}
87
88static
89void svga_delete_fs_state(struct pipe_context *pipe, void *shader)
90{
91   struct svga_context *svga = svga_context(pipe);
92   struct svga_fragment_shader *fs = (struct svga_fragment_shader *) shader;
93   struct svga_shader_result *result, *tmp;
94   enum pipe_error ret;
95
96   svga_hwtnl_flush_retry( svga );
97
98   draw_delete_fragment_shader(svga->swtnl.draw, fs->draw_shader);
99
100   for (result = fs->base.results; result; result = tmp ) {
101      tmp = result->next;
102
103      ret = SVGA3D_DestroyShader(svga->swc,
104                                 result->id,
105                                 SVGA3D_SHADERTYPE_PS );
106      if(ret != PIPE_OK) {
107         svga_context_flush(svga, NULL);
108         ret = SVGA3D_DestroyShader(svga->swc,
109                                    result->id,
110                                    SVGA3D_SHADERTYPE_PS );
111         assert(ret == PIPE_OK);
112      }
113
114      util_bitmask_clear( svga->fs_bm, result->id );
115
116      svga_destroy_shader_result( result );
117
118      /*
119       * Remove stale references to this result to ensure a new result on the
120       * same address will be detected as a change.
121       */
122      if(result == svga->state.hw_draw.fs)
123         svga->state.hw_draw.fs = NULL;
124   }
125
126   FREE((void *)fs->base.tokens);
127   FREE(fs);
128}
129
130
131void svga_init_fs_functions( struct svga_context *svga )
132{
133   svga->pipe.create_fs_state = svga_create_fs_state;
134   svga->pipe.bind_fs_state = svga_bind_fs_state;
135   svga->pipe.delete_fs_state = svga_delete_fs_state;
136}
137
138