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      1 /**
      2  * \file accum.h
      3  * Accumulation buffer operations.
      4  *
      5  * \if subset
      6  * (No-op)
      7  *
      8  * \endif
      9  */
     10 
     11 /*
     12  * Mesa 3-D graphics library
     13  * Version:  3.5
     14  *
     15  * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
     16  *
     17  * Permission is hereby granted, free of charge, to any person obtaining a
     18  * copy of this software and associated documentation files (the "Software"),
     19  * to deal in the Software without restriction, including without limitation
     20  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     21  * and/or sell copies of the Software, and to permit persons to whom the
     22  * Software is furnished to do so, subject to the following conditions:
     23  *
     24  * The above copyright notice and this permission notice shall be included
     25  * in all copies or substantial portions of the Software.
     26  *
     27  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
     28  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     29  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     30  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
     31  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
     32  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     33  */
     34 
     35 
     36 
     37 #ifndef ACCUM_H
     38 #define ACCUM_H
     39 
     40 #include "main/glheader.h"
     41 #include "main/mfeatures.h"
     42 
     43 struct _glapi_table;
     44 struct gl_context;
     45 struct gl_renderbuffer;
     46 
     47 #if FEATURE_accum
     48 
     49 extern void GLAPIENTRY
     50 _mesa_ClearAccum( GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha );
     51 
     52 extern void
     53 _mesa_init_accum_dispatch(struct _glapi_table *disp);
     54 
     55 extern void
     56 _mesa_accum(struct gl_context *ctx, GLenum op, GLfloat value);
     57 
     58 extern void
     59 _mesa_clear_accum_buffer(struct gl_context *ctx);
     60 
     61 #else /* FEATURE_accum */
     62 
     63 #include "main/compiler.h"
     64 
     65 static inline void
     66 _mesa_ClearAccum( GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha )
     67 {
     68    /* this is used in _mesa_PopAttrib */
     69    ASSERT_NO_FEATURE();
     70 }
     71 
     72 static inline void
     73 _mesa_init_accum_dispatch(struct _glapi_table *disp)
     74 {
     75 }
     76 
     77 static inline void
     78 _mesa_accum(struct gl_context *ctx, GLenum op, GLfloat value)
     79 {
     80 }
     81 
     82 static inline void
     83 _mesa_clear_accum_buffer(struct gl_context *ctx)
     84 {
     85 }
     86 
     87 
     88 #endif /* FEATURE_accum */
     89 
     90 extern void
     91 _mesa_init_accum( struct gl_context *ctx );
     92 
     93 #endif /* ACCUM_H */
     94