1 /**************************************************************************
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
29 #include "main/glheader.h"
30 #include "main/context.h"
32 #include "pipe/p_defines.h"
33 #include "st_context.h"
35 #include "st_cb_bitmap.h"
36 #include "st_program.h"
41 * This is used to initialize st->atoms[].
43 static const struct st_tracked_state
*atoms
[] =
45 &st_update_depth_stencil_alpha
,
48 &st_finalize_textures
,
52 &st_update_rasterizer
,
53 &st_update_polygon_stipple
,
59 &st_update_framebuffer
,
60 &st_update_vs_constants
,
61 &st_update_fs_constants
,
62 &st_update_pixel_transfer
66 void st_init_atoms( struct st_context
*st
)
72 void st_destroy_atoms( struct st_context
*st
)
78 /***********************************************************************
81 static GLboolean
check_state( const struct st_state_flags
*a
,
82 const struct st_state_flags
*b
)
84 return ((a
->mesa
& b
->mesa
) ||
88 static void accumulate_state( struct st_state_flags
*a
,
89 const struct st_state_flags
*b
)
96 static void xor_states( struct st_state_flags
*result
,
97 const struct st_state_flags
*a
,
98 const struct st_state_flags
*b
)
100 result
->mesa
= a
->mesa
^ b
->mesa
;
101 result
->st
= a
->st
^ b
->st
;
105 /* Too complex to figure out, just check every time:
107 static void check_program_state( struct st_context
*st
)
109 GLcontext
*ctx
= st
->ctx
;
111 if (ctx
->VertexProgram
._Current
!= &st
->vp
->Base
)
112 st
->dirty
.st
|= ST_NEW_VERTEX_PROGRAM
;
114 if (ctx
->FragmentProgram
._Current
!= &st
->fp
->Base
)
115 st
->dirty
.st
|= ST_NEW_FRAGMENT_PROGRAM
;
120 /***********************************************************************
121 * Update all derived state:
124 void st_validate_state( struct st_context
*st
)
126 struct st_state_flags
*state
= &st
->dirty
;
129 /* The bitmap cache is immune to pixel unpack changes.
130 * Note that GLUT makes several calls to glPixelStore for each
131 * bitmap char it draws so this is an important check.
133 if (state
->mesa
& ~_NEW_PACKUNPACK
)
134 st_flush_bitmap_cache(st
);
136 check_program_state( st
);
141 /*_mesa_printf("%s %x/%x\n", __FUNCTION__, state->mesa, state->st);*/
144 /* Debug version which enforces various sanity checks on the
145 * state flags which are generated and checked to help ensure
146 * state atoms are ordered correctly in the list.
148 struct st_state_flags examined
, prev
;
149 memset(&examined
, 0, sizeof(examined
));
152 for (i
= 0; i
< Elements(atoms
); i
++) {
153 const struct st_tracked_state
*atom
= atoms
[i
];
154 struct st_state_flags generated
;
156 /*_mesa_printf("atom %s %x/%x\n", atom->name, atom->dirty.mesa, atom->dirty.st);*/
158 if (!(atom
->dirty
.mesa
|| atom
->dirty
.st
) ||
160 _mesa_printf("malformed atom %s\n", atom
->name
);
164 if (check_state(state
, &atom
->dirty
)) {
165 atoms
[i
]->update( st
);
166 /*_mesa_printf("after: %x\n", atom->dirty.mesa);*/
169 accumulate_state(&examined
, &atom
->dirty
);
171 /* generated = (prev ^ state)
172 * if (examined & generated)
175 xor_states(&generated
, &prev
, state
);
176 assert(!check_state(&examined
, &generated
));
179 /*_mesa_printf("\n");*/
183 for (i
= 0; i
< Elements(atoms
); i
++) {
184 if (check_state(state
, &atoms
[i
]->dirty
))
185 atoms
[i
]->update( st
);
189 memset(state
, 0, sizeof(*state
));