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      1 /*
      2  * Mesa 3-D graphics library
      3  * Version:  7.3
      4  *
      5  * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
      6  *
      7  * Permission is hereby granted, free of charge, to any person obtaining a
      8  * copy of this software and associated documentation files (the "Software"),
      9  * to deal in the Software without restriction, including without limitation
     10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     11  * and/or sell copies of the Software, and to permit persons to whom the
     12  * Software is furnished to do so, subject to the following conditions:
     13  *
     14  * The above copyright notice and this permission notice shall be included
     15  * in all copies or substantial portions of the Software.
     16  *
     17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
     18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
     21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
     22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     23  */
     24 
     25 
     26 #ifndef STATE_H
     27 #define STATE_H
     28 
     29 #include "mtypes.h"
     30 
     31 extern 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  */
     37 extern void
     38 _mesa_update_state_locked(struct gl_context *ctx);
     39 
     40 
     41 extern void
     42 _mesa_set_varying_vp_inputs(struct gl_context *ctx, GLbitfield64 varying_inputs);
     43 
     44 
     45 extern void
     46 _mesa_set_vp_override(struct gl_context *ctx, GLboolean flag);
     47 
     48 
     49 /**
     50  * Is the secondary color needed?
     51  */
     52 static 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 & FRAG_BIT_COL1))
     70       return GL_TRUE;
     71 
     72    return GL_FALSE;
     73 }
     74 
     75 #endif
     76