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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.  *
  14.  * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
  15.  *
  16.  * Permission is hereby granted, free of charge, to any person obtaining a
  17.  * copy of this software and associated documentation files (the "Software"),
  18.  * to deal in the Software without restriction, including without limitation
  19.  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  20.  * and/or sell copies of the Software, and to permit persons to whom the
  21.  * Software is furnished to do so, subject to the following conditions:
  22.  *
  23.  * The above copyright notice and this permission notice shall be included
  24.  * in all copies or substantial portions of the Software.
  25.  *
  26.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  27.  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  28.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  29.  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  30.  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  31.  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  32.  * OTHER DEALINGS IN THE SOFTWARE.
  33.  */
  34.  
  35.  
  36.  
  37. #ifndef ACCUM_H
  38. #define ACCUM_H
  39.  
  40. #include "main/glheader.h"
  41.  
  42. struct _glapi_table;
  43. struct gl_context;
  44. struct gl_renderbuffer;
  45.  
  46. extern void GLAPIENTRY
  47. _mesa_ClearAccum( GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha );
  48. void GLAPIENTRY
  49. _mesa_Accum( GLenum op, GLfloat value );
  50.  
  51. extern void
  52. _mesa_accum(struct gl_context *ctx, GLenum op, GLfloat value);
  53.  
  54. extern void
  55. _mesa_clear_accum_buffer(struct gl_context *ctx);
  56.  
  57. extern void
  58. _mesa_init_accum( struct gl_context *ctx );
  59.  
  60. #endif /* ACCUM_H */
  61.