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1901 | serge | 1 | /* -*- c++ -*- */ |
2 | /* |
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3 | * Copyright © 2009 Intel Corporation |
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4 | * |
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5 | * Permission is hereby granted, free of charge, to any person obtaining a |
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6 | * copy of this software and associated documentation files (the "Software"), |
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7 | * to deal in the Software without restriction, including without limitation |
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8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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9 | * and/or sell copies of the Software, and to permit persons to whom the |
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10 | * Software is furnished to do so, subject to the following conditions: |
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11 | * |
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12 | * The above copyright notice and this permission notice (including the next |
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13 | * paragraph) shall be included in all copies or substantial portions of the |
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14 | * Software. |
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15 | * |
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16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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21 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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22 | * DEALINGS IN THE SOFTWARE. |
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23 | */ |
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24 | |||
25 | #pragma once |
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26 | #ifndef GLSL_TYPES_H |
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27 | #define GLSL_TYPES_H |
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28 | |||
29 | #include |
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30 | #include |
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31 | |||
32 | extern "C" { |
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33 | #include "GL/gl.h" |
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34 | } |
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35 | |||
36 | #include "ralloc.h" |
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37 | |||
38 | struct _mesa_glsl_parse_state; |
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39 | struct glsl_symbol_table; |
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40 | |||
41 | extern "C" void |
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42 | _mesa_glsl_initialize_types(struct _mesa_glsl_parse_state *state); |
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43 | |||
44 | extern "C" void |
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45 | _mesa_glsl_release_types(void); |
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46 | |||
47 | enum glsl_base_type { |
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48 | GLSL_TYPE_UINT = 0, |
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49 | GLSL_TYPE_INT, |
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50 | GLSL_TYPE_FLOAT, |
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51 | GLSL_TYPE_BOOL, |
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52 | GLSL_TYPE_SAMPLER, |
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53 | GLSL_TYPE_STRUCT, |
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54 | GLSL_TYPE_ARRAY, |
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55 | GLSL_TYPE_VOID, |
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56 | GLSL_TYPE_ERROR |
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57 | }; |
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58 | |||
59 | enum glsl_sampler_dim { |
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60 | GLSL_SAMPLER_DIM_1D = 0, |
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61 | GLSL_SAMPLER_DIM_2D, |
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62 | GLSL_SAMPLER_DIM_3D, |
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63 | GLSL_SAMPLER_DIM_CUBE, |
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64 | GLSL_SAMPLER_DIM_RECT, |
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65 | GLSL_SAMPLER_DIM_BUF |
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66 | }; |
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67 | |||
68 | |||
69 | struct glsl_type { |
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70 | GLenum gl_type; |
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71 | glsl_base_type base_type; |
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72 | |||
73 | unsigned sampler_dimensionality:3; |
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74 | unsigned sampler_shadow:1; |
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75 | unsigned sampler_array:1; |
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76 | unsigned sampler_type:2; /**< Type of data returned using this sampler. |
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77 | * only \c GLSL_TYPE_FLOAT, \c GLSL_TYPE_INT, |
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78 | * and \c GLSL_TYPE_UINT are valid. |
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79 | */ |
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80 | |||
81 | /* Callers of this ralloc-based new need not call delete. It's |
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82 | * easier to just ralloc_free 'mem_ctx' (or any of its ancestors). */ |
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83 | static void* operator new(size_t size) |
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84 | { |
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85 | if (glsl_type::mem_ctx == NULL) { |
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86 | glsl_type::mem_ctx = ralloc_context(NULL); |
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87 | assert(glsl_type::mem_ctx != NULL); |
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88 | } |
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89 | |||
90 | void *type; |
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91 | |||
92 | type = ralloc_size(glsl_type::mem_ctx, size); |
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93 | assert(type != NULL); |
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94 | |||
95 | return type; |
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96 | } |
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97 | |||
98 | /* If the user *does* call delete, that's OK, we will just |
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99 | * ralloc_free in that case. */ |
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100 | static void operator delete(void *type) |
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101 | { |
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102 | ralloc_free(type); |
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103 | } |
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104 | |||
105 | /** |
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106 | * \name Vector and matrix element counts |
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107 | * |
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108 | * For scalars, each of these values will be 1. For non-numeric types |
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109 | * these will be 0. |
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110 | */ |
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111 | /*@{*/ |
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112 | unsigned vector_elements:3; /**< 1, 2, 3, or 4 vector elements. */ |
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113 | unsigned matrix_columns:3; /**< 1, 2, 3, or 4 matrix columns. */ |
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114 | /*@}*/ |
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115 | |||
116 | /** |
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117 | * Name of the data type |
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118 | * |
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119 | * This may be \c NULL for anonymous structures, for arrays, or for |
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120 | * function types. |
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121 | */ |
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122 | const char *name; |
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123 | |||
124 | /** |
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125 | * For \c GLSL_TYPE_ARRAY, this is the length of the array. For |
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126 | * \c GLSL_TYPE_STRUCT, it is the number of elements in the structure and |
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127 | * the number of values pointed to by \c fields.structure (below). |
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128 | */ |
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129 | unsigned length; |
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130 | |||
131 | /** |
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132 | * Subtype of composite data types. |
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133 | */ |
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134 | union { |
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135 | const struct glsl_type *array; /**< Type of array elements. */ |
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136 | const struct glsl_type *parameters; /**< Parameters to function. */ |
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137 | struct glsl_struct_field *structure; /**< List of struct fields. */ |
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138 | } fields; |
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139 | |||
140 | |||
141 | /** |
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142 | * \name Pointers to various public type singletons |
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143 | */ |
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144 | /*@{*/ |
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145 | static const glsl_type *const error_type; |
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146 | static const glsl_type *const void_type; |
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147 | static const glsl_type *const int_type; |
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148 | static const glsl_type *const ivec4_type; |
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149 | static const glsl_type *const uint_type; |
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150 | static const glsl_type *const uvec2_type; |
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151 | static const glsl_type *const uvec3_type; |
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152 | static const glsl_type *const uvec4_type; |
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153 | static const glsl_type *const float_type; |
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154 | static const glsl_type *const vec2_type; |
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155 | static const glsl_type *const vec3_type; |
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156 | static const glsl_type *const vec4_type; |
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157 | static const glsl_type *const bool_type; |
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158 | static const glsl_type *const mat2_type; |
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159 | static const glsl_type *const mat2x3_type; |
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160 | static const glsl_type *const mat2x4_type; |
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161 | static const glsl_type *const mat3x2_type; |
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162 | static const glsl_type *const mat3_type; |
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163 | static const glsl_type *const mat3x4_type; |
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164 | static const glsl_type *const mat4x2_type; |
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165 | static const glsl_type *const mat4x3_type; |
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166 | static const glsl_type *const mat4_type; |
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167 | /*@}*/ |
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168 | |||
169 | |||
170 | /** |
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171 | * For numeric and boolean derrived types returns the basic scalar type |
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172 | * |
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173 | * If the type is a numeric or boolean scalar, vector, or matrix type, |
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174 | * this function gets the scalar type of the individual components. For |
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175 | * all other types, including arrays of numeric or boolean types, the |
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176 | * error type is returned. |
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177 | */ |
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178 | const glsl_type *get_base_type() const; |
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179 | |||
180 | /** |
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181 | * Query the type of elements in an array |
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182 | * |
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183 | * \return |
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184 | * Pointer to the type of elements in the array for array types, or \c NULL |
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185 | * for non-array types. |
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186 | */ |
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187 | const glsl_type *element_type() const |
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188 | { |
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189 | return is_array() ? fields.array : NULL; |
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190 | } |
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191 | |||
192 | /** |
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193 | * Get the instance of a built-in scalar, vector, or matrix type |
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194 | */ |
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195 | static const glsl_type *get_instance(unsigned base_type, unsigned rows, |
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196 | unsigned columns); |
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197 | |||
198 | /** |
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199 | * Get the instance of an array type |
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200 | */ |
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201 | static const glsl_type *get_array_instance(const glsl_type *base, |
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202 | unsigned elements); |
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203 | |||
204 | /** |
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205 | * Get the instance of a record type |
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206 | */ |
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207 | static const glsl_type *get_record_instance(const glsl_struct_field *fields, |
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208 | unsigned num_fields, |
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209 | const char *name); |
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210 | |||
211 | /** |
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212 | * Query the total number of scalars that make up a scalar, vector or matrix |
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213 | */ |
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214 | unsigned components() const |
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215 | { |
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216 | return vector_elements * matrix_columns; |
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217 | } |
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218 | |||
219 | /** |
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220 | * Calculate the number of components slots required to hold this type |
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221 | * |
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222 | * This is used to determine how many uniform or varying locations a type |
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223 | * might occupy. |
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224 | */ |
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225 | unsigned component_slots() const; |
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226 | |||
227 | |||
228 | /** |
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229 | * Query whether or not a type is a scalar (non-vector and non-matrix). |
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230 | */ |
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231 | bool is_scalar() const |
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232 | { |
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233 | return (vector_elements == 1) |
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234 | && (base_type >= GLSL_TYPE_UINT) |
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235 | && (base_type <= GLSL_TYPE_BOOL); |
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236 | } |
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237 | |||
238 | /** |
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239 | * Query whether or not a type is a vector |
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240 | */ |
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241 | bool is_vector() const |
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242 | { |
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243 | return (vector_elements > 1) |
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244 | && (matrix_columns == 1) |
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245 | && (base_type >= GLSL_TYPE_UINT) |
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246 | && (base_type <= GLSL_TYPE_BOOL); |
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247 | } |
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248 | |||
249 | /** |
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250 | * Query whether or not a type is a matrix |
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251 | */ |
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252 | bool is_matrix() const |
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253 | { |
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254 | /* GLSL only has float matrices. */ |
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255 | return (matrix_columns > 1) && (base_type == GLSL_TYPE_FLOAT); |
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256 | } |
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257 | |||
258 | /** |
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259 | * Query whether or not a type is a non-array numeric type |
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260 | */ |
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261 | bool is_numeric() const |
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262 | { |
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263 | return (base_type >= GLSL_TYPE_UINT) && (base_type <= GLSL_TYPE_FLOAT); |
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264 | } |
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265 | |||
266 | /** |
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267 | * Query whether or not a type is an integral type |
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268 | */ |
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269 | bool is_integer() const |
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270 | { |
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271 | return (base_type == GLSL_TYPE_UINT) || (base_type == GLSL_TYPE_INT); |
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272 | } |
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273 | |||
274 | /** |
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275 | * Query whether or not a type is a float type |
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276 | */ |
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277 | bool is_float() const |
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278 | { |
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279 | return base_type == GLSL_TYPE_FLOAT; |
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280 | } |
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281 | |||
282 | /** |
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283 | * Query whether or not a type is a non-array boolean type |
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284 | */ |
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285 | bool is_boolean() const |
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286 | { |
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287 | return base_type == GLSL_TYPE_BOOL; |
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288 | } |
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289 | |||
290 | /** |
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291 | * Query whether or not a type is a sampler |
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292 | */ |
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293 | bool is_sampler() const |
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294 | { |
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295 | return base_type == GLSL_TYPE_SAMPLER; |
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296 | } |
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297 | |||
298 | /** |
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299 | * Query whether or not a type is an array |
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300 | */ |
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301 | bool is_array() const |
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302 | { |
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303 | return base_type == GLSL_TYPE_ARRAY; |
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304 | } |
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305 | |||
306 | /** |
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307 | * Query whether or not a type is a record |
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308 | */ |
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309 | bool is_record() const |
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310 | { |
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311 | return base_type == GLSL_TYPE_STRUCT; |
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312 | } |
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313 | |||
314 | /** |
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315 | * Query whether or not a type is the void type singleton. |
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316 | */ |
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317 | bool is_void() const |
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318 | { |
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319 | return base_type == GLSL_TYPE_VOID; |
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320 | } |
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321 | |||
322 | /** |
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323 | * Query whether or not a type is the error type singleton. |
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324 | */ |
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325 | bool is_error() const |
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326 | { |
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327 | return base_type == GLSL_TYPE_ERROR; |
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328 | } |
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329 | |||
330 | /** |
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331 | * Query the full type of a matrix row |
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332 | * |
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333 | * \return |
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334 | * If the type is not a matrix, \c glsl_type::error_type is returned. |
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335 | * Otherwise a type matching the rows of the matrix is returned. |
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336 | */ |
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337 | const glsl_type *row_type() const |
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338 | { |
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339 | return is_matrix() |
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340 | ? get_instance(base_type, matrix_columns, 1) |
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341 | : error_type; |
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342 | } |
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343 | |||
344 | /** |
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345 | * Query the full type of a matrix column |
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346 | * |
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347 | * \return |
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348 | * If the type is not a matrix, \c glsl_type::error_type is returned. |
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349 | * Otherwise a type matching the columns of the matrix is returned. |
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350 | */ |
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351 | const glsl_type *column_type() const |
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352 | { |
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353 | return is_matrix() |
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354 | ? get_instance(base_type, vector_elements, 1) |
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355 | : error_type; |
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356 | } |
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357 | |||
358 | |||
359 | /** |
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360 | * Get the type of a structure field |
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361 | * |
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362 | * \return |
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363 | * Pointer to the type of the named field. If the type is not a structure |
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364 | * or the named field does not exist, \c glsl_type::error_type is returned. |
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365 | */ |
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366 | const glsl_type *field_type(const char *name) const; |
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367 | |||
368 | |||
369 | /** |
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370 | * Get the location of a filed within a record type |
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371 | */ |
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372 | int field_index(const char *name) const; |
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373 | |||
374 | |||
375 | /** |
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376 | * Query the number of elements in an array type |
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377 | * |
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378 | * \return |
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379 | * The number of elements in the array for array types or -1 for non-array |
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380 | * types. If the number of elements in the array has not yet been declared, |
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381 | * zero is returned. |
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382 | */ |
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383 | int array_size() const |
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384 | { |
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385 | return is_array() ? length : -1; |
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386 | } |
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387 | |||
388 | private: |
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389 | /** |
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390 | * ralloc context for all glsl_type allocations |
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391 | * |
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392 | * Set on the first call to \c glsl_type::new. |
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393 | */ |
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394 | static void *mem_ctx; |
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395 | |||
396 | void init_ralloc_type_ctx(void); |
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397 | |||
398 | /** Constructor for vector and matrix types */ |
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399 | glsl_type(GLenum gl_type, |
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400 | glsl_base_type base_type, unsigned vector_elements, |
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401 | unsigned matrix_columns, const char *name); |
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402 | |||
403 | /** Constructor for sampler types */ |
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404 | glsl_type(GLenum gl_type, |
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405 | enum glsl_sampler_dim dim, bool shadow, bool array, |
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406 | unsigned type, const char *name); |
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407 | |||
408 | /** Constructor for record types */ |
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409 | glsl_type(const glsl_struct_field *fields, unsigned num_fields, |
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410 | const char *name); |
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411 | |||
412 | /** Constructor for array types */ |
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413 | glsl_type(const glsl_type *array, unsigned length); |
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414 | |||
415 | /** Hash table containing the known array types. */ |
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416 | static struct hash_table *array_types; |
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417 | |||
418 | /** Hash table containing the known record types. */ |
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419 | static struct hash_table *record_types; |
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420 | |||
421 | static int record_key_compare(const void *a, const void *b); |
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422 | static unsigned record_key_hash(const void *key); |
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423 | |||
424 | /** |
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425 | * \name Pointers to various type singletons |
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426 | */ |
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427 | /*@{*/ |
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428 | static const glsl_type _error_type; |
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429 | static const glsl_type _void_type; |
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430 | static const glsl_type builtin_core_types[]; |
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431 | static const glsl_type builtin_structure_types[]; |
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432 | static const glsl_type builtin_110_deprecated_structure_types[]; |
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433 | static const glsl_type builtin_110_types[]; |
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434 | static const glsl_type builtin_120_types[]; |
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435 | static const glsl_type builtin_130_types[]; |
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436 | static const glsl_type builtin_ARB_texture_rectangle_types[]; |
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437 | static const glsl_type builtin_EXT_texture_array_types[]; |
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438 | static const glsl_type builtin_EXT_texture_buffer_object_types[]; |
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439 | /*@}*/ |
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440 | |||
441 | /** |
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442 | * \name Methods to populate a symbol table with built-in types. |
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443 | * |
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444 | * \internal |
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445 | * This is one of the truely annoying things about C++. Methods that are |
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446 | * completely internal and private to a type still have to be advertised to |
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447 | * the world in a public header file. |
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448 | */ |
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449 | /*@{*/ |
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450 | static void generate_100ES_types(glsl_symbol_table *); |
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451 | static void generate_110_types(glsl_symbol_table *); |
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452 | static void generate_120_types(glsl_symbol_table *); |
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453 | static void generate_130_types(glsl_symbol_table *); |
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454 | static void generate_ARB_texture_rectangle_types(glsl_symbol_table *, bool); |
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455 | static void generate_EXT_texture_array_types(glsl_symbol_table *, bool); |
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456 | /*@}*/ |
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457 | |||
458 | /** |
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459 | * \name Friend functions. |
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460 | * |
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461 | * These functions are friends because they must have C linkage and the |
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462 | * need to call various private methods or access various private static |
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463 | * data. |
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464 | */ |
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465 | /*@{*/ |
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466 | friend void _mesa_glsl_initialize_types(struct _mesa_glsl_parse_state *); |
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467 | friend void _mesa_glsl_release_types(void); |
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468 | /*@}*/ |
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469 | }; |
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470 | |||
471 | struct glsl_struct_field { |
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472 | const struct glsl_type *type; |
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473 | const char *name; |
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474 | }; |
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475 | |||
476 | #endif /* GLSL_TYPES_H */=>=>=>>>>>>> |