1 | // Copyright (C) 2012-2013 Kornel Kisielewicz
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2 | // This file is part of NV Libraries.
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3 | // For conditions of distribution and use, see copyright notice in nv.hh
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4 |
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5 | #include "nv/gl/gl_enum.hh"
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6 |
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7 | #include "nv/lib/gl.hh"
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8 |
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9 | using namespace nv;
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10 |
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11 | unsigned int nv::clear_state_buffers_to_mask( clear_state::buffers_type type )
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12 | {
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13 | unsigned int mask = 0;
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14 | if ( (type & clear_state::COLOR_BUFFER) != 0 ) mask |= GL_COLOR_BUFFER_BIT;
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15 | if ( (type & clear_state::DEPTH_BUFFER) != 0 ) mask |= GL_DEPTH_BUFFER_BIT;
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16 | if ( (type & clear_state::STENCIL_BUFFER) != 0 ) mask |= GL_STENCIL_BUFFER_BIT;
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17 | return mask;
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18 | }
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19 |
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20 | unsigned int nv::depth_state_function_to_enum( depth_test::function_type type )
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21 | {
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22 | switch( type )
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23 | {
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24 | case depth_test::NEVER : return GL_NEVER;
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25 | case depth_test::LESS : return GL_LESS;
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26 | case depth_test::EQUAL : return GL_EQUAL;
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27 | case depth_test::LESS_OR_EQUAL : return GL_LEQUAL;
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28 | case depth_test::GREATER : return GL_GREATER;
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29 | case depth_test::NOT_EQUAL : return GL_NOTEQUAL;
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30 | case depth_test::GREATER_OR_EQUAL : return GL_GEQUAL;
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31 | case depth_test::ALWAYS : return GL_ALWAYS;
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32 | NV_RETURN_COVERED_DEFAULT( 0 );
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33 | }
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34 | }
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35 |
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36 | unsigned int nv::blending_factor_to_enum( blending::factor type )
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37 | {
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38 | switch( type )
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39 | {
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40 | case blending::ZERO : return GL_ZERO;
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41 | case blending::ONE : return GL_ONE;
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42 | case blending::SRC_COLOR : return GL_SRC_COLOR;
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43 | case blending::ONE_MINUS_SRC_COLOR : return GL_ONE_MINUS_SRC_COLOR;
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44 | case blending::DST_COLOR : return GL_DST_COLOR;
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45 | case blending::ONE_MINUS_DST_COLOR : return GL_ONE_MINUS_DST_COLOR;
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46 | case blending::SRC_ALPHA : return GL_SRC_ALPHA;
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47 | case blending::ONE_MINUS_SRC_ALPHA : return GL_ONE_MINUS_SRC_ALPHA;
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48 | case blending::DST_ALPHA : return GL_DST_ALPHA;
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49 | case blending::ONE_MINUS_DST_ALPHA : return GL_ONE_MINUS_DST_ALPHA;
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50 | case blending::CONSTANT_COLOR : return GL_CONSTANT_COLOR;
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51 | case blending::ONE_MINUS_CONSTANT_COLOR: return GL_ONE_MINUS_CONSTANT_COLOR;
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52 | case blending::CONSTANT_ALPHA : return GL_CONSTANT_ALPHA;
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53 | case blending::ONE_MINUS_CONSTANT_ALPHA: return GL_ONE_MINUS_CONSTANT_ALPHA;
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54 | case blending::SRC_ALPHA_SATURATE : return GL_SRC_ALPHA_SATURATE;
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55 | NV_RETURN_COVERED_DEFAULT( 0 );
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56 | }
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57 | }
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58 |
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59 | unsigned int nv::blending_equation_to_enum( blending::equation type )
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60 | {
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61 | switch( type )
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62 | {
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63 | case blending::ADD : return GL_FUNC_ADD;
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64 | case blending::SUBTRACT : return GL_FUNC_SUBTRACT;
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65 | case blending::REVERSE_SUBTRACT : return GL_FUNC_REVERSE_SUBTRACT;
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66 | case blending::MINIMUM : return GL_MIN;
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67 | case blending::MAXIMUM : return GL_MAX;
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68 | NV_RETURN_COVERED_DEFAULT( 0 );
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69 | }
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70 | }
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71 |
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72 | unsigned int nv::culling_face_type_to_enum( culling::face_type type )
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73 | {
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74 | switch( type )
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75 | {
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76 | case culling::FRONT : return GL_FRONT;
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77 | case culling::BACK : return GL_BACK;
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78 | case culling::FRONT_AND_BACK : return GL_FRONT_AND_BACK;
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79 | NV_RETURN_COVERED_DEFAULT( 0 );
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80 | }
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81 | }
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82 |
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83 | unsigned int nv::culling_order_type_to_enum( culling::order_type type )
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84 | {
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85 | switch( type )
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86 | {
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87 | case culling::CW : return GL_CW;
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88 | case culling::CCW : return GL_CCW;
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89 | NV_RETURN_COVERED_DEFAULT( 0 );
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90 | }
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91 | }
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92 |
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93 | unsigned int nv::stencil_function_to_enum( stencil_test_face::function_type type )
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94 | {
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95 | switch( type )
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96 | {
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97 | case stencil_test_face::NEVER : return GL_NEVER;
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98 | case stencil_test_face::LESS : return GL_LESS;
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99 | case stencil_test_face::EQUAL : return GL_EQUAL;
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100 | case stencil_test_face::LESS_OR_EQUAL : return GL_LEQUAL;
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101 | case stencil_test_face::GREATER : return GL_GREATER;
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102 | case stencil_test_face::NOT_EQUAL : return GL_NOTEQUAL;
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103 | case stencil_test_face::GREATER_OR_EQUAL : return GL_GEQUAL;
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104 | case stencil_test_face::ALWAYS : return GL_ALWAYS;
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105 | NV_RETURN_COVERED_DEFAULT( 0 );
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106 | }
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107 | }
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108 |
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109 | unsigned int nv::stencil_operation_to_enum( stencil_test_face::operation type )
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110 | {
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111 | switch( type )
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112 | {
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113 | case stencil_test_face::ZERO : return GL_ZERO;
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114 | case stencil_test_face::INVERT : return GL_INVERT;
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115 | case stencil_test_face::KEEP : return GL_KEEP;
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116 | case stencil_test_face::REPLACE : return GL_REPLACE;
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117 | case stencil_test_face::INCREMENT : return GL_INCR;
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118 | case stencil_test_face::DECREMENT : return GL_DECR;
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119 | case stencil_test_face::INCREMENT_WRAP : return GL_INCR_WRAP;
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120 | case stencil_test_face::DECREMENT_WRAP : return GL_DECR_WRAP;
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121 | NV_RETURN_COVERED_DEFAULT( 0 );
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122 | }
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123 | }
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124 |
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125 | unsigned int nv::buffer_hint_to_enum( buffer_hint hint )
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126 | {
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127 | switch( hint )
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128 | {
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129 | case STATIC_DRAW : return GL_STATIC_DRAW;
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130 | case STREAM_DRAW : return GL_STREAM_DRAW;
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131 | case DYNAMIC_DRAW : return GL_DYNAMIC_DRAW;
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132 | NV_RETURN_COVERED_DEFAULT( 0 );
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133 | }
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134 | }
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135 |
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136 | unsigned int nv::image_format_to_enum( image_format format )
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137 | {
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138 | switch( format )
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139 | {
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140 | case RGB : return GL_RGB;
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141 | case RGBA : return GL_RGBA;
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142 | NV_RETURN_COVERED_DEFAULT( 0 );
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143 | }
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144 | }
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145 |
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146 | unsigned int nv::sampler_filter_to_enum( sampler::filter filter )
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147 | {
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148 | switch( filter )
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149 | {
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150 | case sampler::LINEAR : return GL_LINEAR;
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151 | case sampler::NEAREST : return GL_NEAREST;
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152 | case sampler::NEAREST_MIPMAP_NEAREST : return GL_NEAREST_MIPMAP_NEAREST;
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153 | case sampler::LINEAR_MIPMAP_NEAREST : return GL_LINEAR_MIPMAP_NEAREST;
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154 | case sampler::NEAREST_MIPMAP_LINEAR : return GL_NEAREST_MIPMAP_LINEAR;
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155 | case sampler::LINEAR_MIPMAP_LINEAR : return GL_LINEAR_MIPMAP_LINEAR;
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156 | NV_RETURN_COVERED_DEFAULT( 0 );
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157 | }
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158 | }
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159 |
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160 | unsigned int nv::sampler_wrap_to_enum( sampler::wrap wrap )
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161 | {
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162 | switch( wrap )
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163 | {
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164 | case sampler::CLAMP_TO_EDGE : return GL_CLAMP_TO_EDGE;
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165 | case sampler::CLAMP_TO_BORDER : return GL_CLAMP_TO_BORDER;
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166 | case sampler::MIRRORED_REPEAT : return GL_MIRRORED_REPEAT;
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167 | case sampler::REPEAT : return GL_REPEAT;
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168 | NV_RETURN_COVERED_DEFAULT( 0 );
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169 | }
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170 | }
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171 |
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172 | unsigned int nv::primitive_to_enum( primitive p )
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173 | {
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174 | switch( p )
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175 | {
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176 | case POINTS : return GL_POINTS;
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177 | case LINES : return GL_LINES;
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178 | case LINE_LOOP : return GL_LINE_LOOP;
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179 | case LINE_STRIP : return GL_LINE_STRIP;
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180 | case TRIANGLES : return GL_TRIANGLES;
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181 | case TRIANGLE_STRIP : return GL_TRIANGLE_STRIP;
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182 | case TRIANGLE_FAN : return GL_TRIANGLE_FAN;
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183 | NV_RETURN_COVERED_DEFAULT( 0 );
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184 | }
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185 | }
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186 |
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187 | unsigned int nv::datatype_to_gl_enum( datatype type )
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188 | {
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189 | switch( type )
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190 | {
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191 | case BYTE : return GL_BYTE;
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192 | case UBYTE : return GL_UNSIGNED_BYTE;
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193 | case SHORT : return GL_SHORT;
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194 | case USHORT : return GL_UNSIGNED_SHORT;
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195 | case INT : return GL_INT;
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196 | case UINT : return GL_UNSIGNED_INT;
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197 | case FLOAT : return GL_FLOAT;
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198 | case FLOAT_VECTOR_2 : return GL_FLOAT_VEC2;
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199 | case FLOAT_VECTOR_3 : return GL_FLOAT_VEC3;
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200 | case FLOAT_VECTOR_4 : return GL_FLOAT_VEC4;
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201 | case FLOAT_MATRIX_2 : return GL_FLOAT_MAT2;
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202 | case FLOAT_MATRIX_3 : return GL_FLOAT_MAT3;
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203 | case FLOAT_MATRIX_4 : return GL_FLOAT_MAT4;
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204 | case INT_VECTOR_2 : return GL_INT_VEC2;
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205 | case INT_VECTOR_3 : return GL_INT_VEC3;
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206 | case INT_VECTOR_4 : return GL_INT_VEC4;
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207 | // remove, error or ?
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208 | case BYTE_VECTOR_2 : return GL_INT_VEC2;
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209 | case BYTE_VECTOR_3 : return GL_INT_VEC3;
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210 | case BYTE_VECTOR_4 : return GL_INT_VEC4;
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211 | NV_RETURN_COVERED_DEFAULT( 0 );
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212 | }
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213 | }
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214 |
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215 | nv::datatype nv::gl_enum_to_datatype( unsigned int gl_enum )
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216 | {
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217 | switch( gl_enum )
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218 | {
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219 | case GL_BYTE : return BYTE;
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220 | case GL_UNSIGNED_BYTE : return UBYTE;
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221 | case GL_SHORT : return SHORT;
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222 | case GL_UNSIGNED_SHORT : return USHORT;
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223 | case GL_INT : return INT;
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224 | case GL_UNSIGNED_INT : return UINT;
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225 | case GL_FLOAT : return FLOAT;
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226 | case GL_FLOAT_VEC2 : return FLOAT_VECTOR_2;
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227 | case GL_FLOAT_VEC3 : return FLOAT_VECTOR_3;
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228 | case GL_FLOAT_VEC4 : return FLOAT_VECTOR_4;
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229 | case GL_FLOAT_MAT2 : return FLOAT_MATRIX_2;
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230 | case GL_FLOAT_MAT3 : return FLOAT_MATRIX_3;
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231 | case GL_FLOAT_MAT4 : return FLOAT_MATRIX_4;
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232 | case GL_INT_VEC2 : return INT_VECTOR_2;
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233 | case GL_INT_VEC3 : return INT_VECTOR_3;
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234 | case GL_INT_VEC4 : return INT_VECTOR_4;
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235 | default : return datatype(0); // TODO: throw!
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236 | }
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237 | }
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