state.h revision 848b8605 
1/*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25
26#ifndef STATE_H
27#define STATE_H
28
29#include "mtypes.h"
30
31extern void
32_mesa_update_state(struct gl_context *ctx);
33
34/* As above but can only be called between _mesa_lock_context_textures() and
35 * _mesa_unlock_context_textures().
36 */
37extern void
38_mesa_update_state_locked(struct gl_context *ctx);
39
40
41extern void
42_mesa_set_varying_vp_inputs(struct gl_context *ctx, GLbitfield64 varying_inputs);
43
44
45extern void
46_mesa_set_vp_override(struct gl_context *ctx, GLboolean flag);
47
48
49/**
50 * Is the secondary color needed?
51 */
52static inline GLboolean
53_mesa_need_secondary_color(const struct gl_context *ctx)
54{
55   if (ctx->Light.Enabled &&
56       ctx->Light.Model.ColorControl == GL_SEPARATE_SPECULAR_COLOR)
57       return GL_TRUE;
58
59   if (ctx->Fog.ColorSumEnabled)
60      return GL_TRUE;
61
62   if (ctx->VertexProgram._Current &&
63       (ctx->VertexProgram._Current != ctx->VertexProgram._TnlProgram) &&
64       (ctx->VertexProgram._Current->Base.InputsRead & VERT_BIT_COLOR1))
65      return GL_TRUE;
66
67   if (ctx->FragmentProgram._Current &&
68       (ctx->FragmentProgram._Current != ctx->FragmentProgram._TexEnvProgram) &&
69       (ctx->FragmentProgram._Current->Base.InputsRead & VARYING_BIT_COL1))
70      return GL_TRUE;
71
72   return GL_FALSE;
73}
74
75#endif
76