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1 /* ============================================================================
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2 * Freetype GL - A C OpenGL Freetype engine
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3 * Platform: Any
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4 * WWW: http://code.google.com/p/freetype-gl/
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5 * ----------------------------------------------------------------------------
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6 * Copyright 2011,2012,2013 Nicolas P. Rougier. All rights reserved.
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7 *
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8 * Redistribution and use in source and binary forms, with or without
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9 * modification, are permitted provided that the following conditions are met:
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10 *
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11 * 1. Redistributions of source code must retain the above copyright notice,
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12 * this list of conditions and the following disclaimer.
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13 *
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14 * 2. Redistributions in binary form must reproduce the above copyright
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15 * notice, this list of conditions and the following disclaimer in the
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16 * documentation and/or other materials provided with the distribution.
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17 *
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18 * THIS SOFTWARE IS PROVIDED BY NICOLAS P. ROUGIER ''AS IS'' AND ANY EXPRESS OR
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19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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20 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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21 * EVENT SHALL NICOLAS P. ROUGIER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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22 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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28 *
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29 * The views and conclusions contained in the software and documentation are
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30 * those of the authors and should not be interpreted as representing official
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31 * policies, either expressed or implied, of Nicolas P. Rougier.
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32 * ----------------------------------------------------------------------------
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33 */
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34 #ifndef __SHADER_H__
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35 #define __SHADER_H__
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36
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37 #include "opengl.h"
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38
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39 #ifdef __cplusplus
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40 extern "C" {
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41 #endif
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42
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43 /**
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44 * @file shader.h
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45 * @author Nicolas Rougier (Nicolas.Rougier@inria.fr)
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46 *
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47 * @defgroup shader Shader
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48 *
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49 * Simple functions for loading/building a shader from sources.
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50 *
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51 * <b>Example Usage</b>:
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52 * @code
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53 * #include "shader.h"
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54 *
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55 * int main( int arrgc, char *argv[] )
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56 * {
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57 * GLuint shader = shader_load("shader.vert", "shader.frag");
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58 *
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59 * return 0;
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60 * }
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61 * @endcode
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62 *
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63 * @{
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64 */
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65
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66 /**
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67 * Read a fragment or vertex shader from a file
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68 *
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69 * @param filename file to read shader from
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70 * @return a newly-allocated text buffer containing code. This buffer
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71 * must be freed after usage.
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72 *
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73 */
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74 char *
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75 shader_read( const char *filename );
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76
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77
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78 /**
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79 * Compile a shader from a text buffer.
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80 *
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81 * @param source code of the shader
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82 * @param type type of the shader
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83 *
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84 * @return a handle on the compiled program
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85 *
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86 */
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87 GLuint
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88 shader_compile( const char* source,
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89 const GLenum type );
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90
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91
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92 /**
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93 * Load a vertex and fragment shader sources and build program
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94 *
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95 * @param vert_filename vertex shader filename
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96 * @param frag_filename fragment shader filename
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97 *
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98 * @return a handle on the built program
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99 *
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100 */
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101 GLuint
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102 shader_load( const char * vert_filename,
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103 const char * frag_filename );
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104
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105
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106 /**
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107 *
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108 */
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109 GLuint
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110 shader_get( GLuint self,
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111 const char * name );
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112
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113 /** @} */
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114
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115 #ifdef __cplusplus
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116 }
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117 #endif
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118
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119 #endif /* __SHADER_H__ */
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