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  1. /**
  2.  * \file blend.h
  3.  * Blending functions operations.
  4.  */
  5.  
  6. /*
  7.  * Mesa 3-D graphics library
  8.  *
  9.  * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
  10.  *
  11.  * Permission is hereby granted, free of charge, to any person obtaining a
  12.  * copy of this software and associated documentation files (the "Software"),
  13.  * to deal in the Software without restriction, including without limitation
  14.  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  15.  * and/or sell copies of the Software, and to permit persons to whom the
  16.  * Software is furnished to do so, subject to the following conditions:
  17.  *
  18.  * The above copyright notice and this permission notice shall be included
  19.  * in all copies or substantial portions of the Software.
  20.  *
  21.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  22.  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  23.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  24.  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  25.  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  26.  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  27.  * OTHER DEALINGS IN THE SOFTWARE.
  28.  */
  29.  
  30.  
  31.  
  32. #ifndef BLEND_H
  33. #define BLEND_H
  34.  
  35.  
  36. #include "glheader.h"
  37. #include "formats.h"
  38.  
  39. struct gl_context;
  40. struct gl_framebuffer;
  41.  
  42.  
  43. extern void GLAPIENTRY
  44. _mesa_BlendFunc( GLenum sfactor, GLenum dfactor );
  45.  
  46.  
  47. extern void GLAPIENTRY
  48. _mesa_BlendFuncSeparate( GLenum sfactorRGB, GLenum dfactorRGB,
  49.                             GLenum sfactorA, GLenum dfactorA );
  50.  
  51.  
  52. extern void GLAPIENTRY
  53. _mesa_BlendFunciARB(GLuint buf, GLenum sfactor, GLenum dfactor);
  54.  
  55.  
  56. extern void GLAPIENTRY
  57. _mesa_BlendFuncSeparateiARB(GLuint buf, GLenum sfactorRGB, GLenum dfactorRGB,
  58.                          GLenum sfactorA, GLenum dfactorA);
  59.  
  60.  
  61. extern void GLAPIENTRY
  62. _mesa_BlendEquation( GLenum mode );
  63.  
  64.  
  65. extern void GLAPIENTRY
  66. _mesa_BlendEquationiARB(GLuint buf, GLenum mode);
  67.  
  68.  
  69. extern void GLAPIENTRY
  70. _mesa_BlendEquationSeparate( GLenum modeRGB, GLenum modeA );
  71.  
  72.  
  73. extern void GLAPIENTRY
  74. _mesa_BlendEquationSeparateiARB(GLuint buf, GLenum modeRGB, GLenum modeA);
  75.  
  76.  
  77. extern void GLAPIENTRY
  78. _mesa_BlendColor(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
  79.  
  80.  
  81. extern void GLAPIENTRY
  82. _mesa_AlphaFunc( GLenum func, GLclampf ref );
  83.  
  84.  
  85. extern void GLAPIENTRY
  86. _mesa_LogicOp( GLenum opcode );
  87.  
  88.  
  89. extern void GLAPIENTRY
  90. _mesa_IndexMask( GLuint mask );
  91.  
  92. extern void GLAPIENTRY
  93. _mesa_ColorMask( GLboolean red, GLboolean green,
  94.                  GLboolean blue, GLboolean alpha );
  95.  
  96. extern void GLAPIENTRY
  97. _mesa_ColorMaski( GLuint buf, GLboolean red, GLboolean green,
  98.                         GLboolean blue, GLboolean alpha );
  99.  
  100.  
  101. extern void GLAPIENTRY
  102. _mesa_ClampColor(GLenum target, GLenum clamp);
  103.  
  104. extern GLboolean
  105. _mesa_get_clamp_fragment_color(const struct gl_context *ctx,
  106.                                const struct gl_framebuffer *drawFb);
  107.  
  108. extern GLboolean
  109. _mesa_get_clamp_vertex_color(const struct gl_context *ctx,
  110.                              const struct gl_framebuffer *drawFb);
  111.  
  112. extern GLboolean
  113. _mesa_get_clamp_read_color(const struct gl_context *ctx,
  114.                            const struct gl_framebuffer *readFb);
  115.  
  116. extern void
  117. _mesa_update_clamp_fragment_color(struct gl_context *ctx,
  118.                                   const struct gl_framebuffer *drawFb);
  119.  
  120. extern void
  121. _mesa_update_clamp_vertex_color(struct gl_context *ctx,
  122.                                 const struct gl_framebuffer *drawFb);
  123.  
  124. extern mesa_format
  125. _mesa_get_render_format(const struct gl_context *ctx, mesa_format format);
  126.  
  127. extern void  
  128. _mesa_init_color( struct gl_context * ctx );
  129.  
  130. #endif
  131.