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"
37 #include "st_manager.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
,
53 &st_update_rasterizer
,
54 &st_update_polygon_stipple
,
60 &st_update_framebuffer
,
62 &st_update_vs_constants
,
63 &st_update_gs_constants
,
64 &st_update_fs_constants
,
65 &st_update_pixel_transfer
69 void st_init_atoms( struct st_context
*st
)
75 void st_destroy_atoms( struct st_context
*st
)
81 /***********************************************************************
84 static GLboolean
check_state( const struct st_state_flags
*a
,
85 const struct st_state_flags
*b
)
87 return ((a
->mesa
& b
->mesa
) ||
91 static void accumulate_state( struct st_state_flags
*a
,
92 const struct st_state_flags
*b
)
99 static void xor_states( struct st_state_flags
*result
,
100 const struct st_state_flags
*a
,
101 const struct st_state_flags
*b
)
103 result
->mesa
= a
->mesa
^ b
->mesa
;
104 result
->st
= a
->st
^ b
->st
;
108 /* Too complex to figure out, just check every time:
110 static void check_program_state( struct st_context
*st
)
112 struct gl_context
*ctx
= st
->ctx
;
114 if (ctx
->VertexProgram
._Current
!= &st
->vp
->Base
)
115 st
->dirty
.st
|= ST_NEW_VERTEX_PROGRAM
;
117 if (ctx
->FragmentProgram
._Current
!= &st
->fp
->Base
)
118 st
->dirty
.st
|= ST_NEW_FRAGMENT_PROGRAM
;
120 if (ctx
->GeometryProgram
._Current
!= &st
->gp
->Base
)
121 st
->dirty
.st
|= ST_NEW_GEOMETRY_PROGRAM
;
125 /***********************************************************************
126 * Update all derived state:
129 void st_validate_state( struct st_context
*st
)
131 struct st_state_flags
*state
= &st
->dirty
;
134 /* The bitmap cache is immune to pixel unpack changes.
135 * Note that GLUT makes several calls to glPixelStore for each
136 * bitmap char it draws so this is an important check.
138 if (state
->mesa
& ~_NEW_PACKUNPACK
)
139 st_flush_bitmap_cache(st
);
141 check_program_state( st
);
143 st_manager_validate_framebuffers(st
);
148 /*printf("%s %x/%x\n", __FUNCTION__, state->mesa, state->st);*/
151 /* Debug version which enforces various sanity checks on the
152 * state flags which are generated and checked to help ensure
153 * state atoms are ordered correctly in the list.
155 struct st_state_flags examined
, prev
;
156 memset(&examined
, 0, sizeof(examined
));
159 for (i
= 0; i
< Elements(atoms
); i
++) {
160 const struct st_tracked_state
*atom
= atoms
[i
];
161 struct st_state_flags generated
;
163 /*printf("atom %s %x/%x\n", atom->name, atom->dirty.mesa, atom->dirty.st);*/
165 if (!(atom
->dirty
.mesa
|| atom
->dirty
.st
) ||
167 printf("malformed atom %s\n", atom
->name
);
171 if (check_state(state
, &atom
->dirty
)) {
172 atoms
[i
]->update( st
);
173 /*printf("after: %x\n", atom->dirty.mesa);*/
176 accumulate_state(&examined
, &atom
->dirty
);
178 /* generated = (prev ^ state)
179 * if (examined & generated)
182 xor_states(&generated
, &prev
, state
);
183 assert(!check_state(&examined
, &generated
));
190 for (i
= 0; i
< Elements(atoms
); i
++) {
191 if (check_state(state
, &atoms
[i
]->dirty
))
192 atoms
[i
]->update( st
);
196 memset(state
, 0, sizeof(*state
));