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  1. /*
  2.  * Mesa 3-D graphics library
  3.  * Version:  7.1
  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.  * \file prog_uniform.c
  27.  * Shader uniform functions.
  28.  * \author Brian Paul
  29.  */
  30.  
  31. #ifndef PROG_UNIFORM_H
  32. #define PROG_UNIFORM_H
  33.  
  34. #include "main/glheader.h"
  35.  
  36.  
  37. /**
  38.  * Shader program uniform variable.
  39.  * The glGetUniformLocation() and glUniform() commands will use this
  40.  * information.
  41.  * Note that a uniform such as "binormal" might be used in both the
  42.  * vertex shader and the fragment shader.  When glUniform() is called to
  43.  * set the uniform's value, it must be updated in both the vertex and
  44.  * fragment shaders.  The uniform may be in different locations in the
  45.  * two shaders so we keep track of that here.
  46.  */
  47. struct gl_uniform
  48. {
  49.    const char *Name;        /**< Null-terminated string */
  50.    GLint VertPos;
  51.    GLint FragPos;
  52.    GLint GeomPos;
  53.    GLboolean Initialized;   /**< For debug.  Has this uniform been set? */
  54.    const struct glsl_type *Type;
  55. };
  56.  
  57.  
  58. /**
  59.  * List of gl_uniforms
  60.  */
  61. struct gl_uniform_list
  62. {
  63.    GLuint Size;                 /**< allocated size of Uniforms array */
  64.    GLuint NumUniforms;          /**< number of uniforms in the array */
  65.    struct gl_uniform *Uniforms; /**< Array [Size] */
  66. };
  67.  
  68.  
  69. extern struct gl_uniform_list *
  70. _mesa_new_uniform_list(void);
  71.  
  72. extern void
  73. _mesa_free_uniform_list(struct gl_uniform_list *list);
  74.  
  75. extern struct gl_uniform *
  76. _mesa_append_uniform(struct gl_uniform_list *list,
  77.                      const char *name, GLenum target, GLuint progPos);
  78.  
  79. extern GLint
  80. _mesa_lookup_uniform(const struct gl_uniform_list *list, const char *name);
  81.  
  82. extern GLint
  83. _mesa_longest_uniform_name(const struct gl_uniform_list *list);
  84.  
  85. extern void
  86. _mesa_print_uniforms(const struct gl_uniform_list *list);
  87.  
  88.  
  89. #endif /* PROG_UNIFORM_H */
  90.