1 /* 2 * Mesa 3-D graphics library 3 * Version: 6.5.3 4 * 5 * Copyright (C) 1999-2007 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 program.c 27 * Vertex and fragment program support functions. 28 * \author Brian Paul 29 */ 30 31 32 /** 33 * \mainpage Mesa vertex and fragment program module 34 * 35 * This module or directory contains most of the code for vertex and 36 * fragment programs and shaders, including state management, parsers, 37 * and (some) software routines for executing programs 38 */ 39 40 #ifndef PROGRAM_H 41 #define PROGRAM_H 42 43 #include "main/compiler.h" 44 #include "main/mtypes.h" 45 46 47 extern struct gl_program _mesa_DummyProgram; 48 49 50 extern void 51 _mesa_init_program(struct gl_context *ctx); 52 53 extern void 54 _mesa_free_program_data(struct gl_context *ctx); 55 56 extern void 57 _mesa_update_default_objects_program(struct gl_context *ctx); 58 59 extern void 60 _mesa_set_program_error(struct gl_context *ctx, GLint pos, const char *string); 61 62 extern const GLubyte * 63 _mesa_find_line_column(const GLubyte *string, const GLubyte *pos, 64 GLint *line, GLint *col); 65 66 67 extern struct gl_program * 68 _mesa_init_vertex_program(struct gl_context *ctx, 69 struct gl_vertex_program *prog, 70 GLenum target, GLuint id); 71 72 extern struct gl_program * 73 _mesa_init_fragment_program(struct gl_context *ctx, 74 struct gl_fragment_program *prog, 75 GLenum target, GLuint id); 76 77 extern struct gl_program * 78 _mesa_init_geometry_program(struct gl_context *ctx, 79 struct gl_geometry_program *prog, 80 GLenum target, GLuint id); 81 82 extern struct gl_program * 83 _mesa_new_program(struct gl_context *ctx, GLenum target, GLuint id); 84 85 extern void 86 _mesa_delete_program(struct gl_context *ctx, struct gl_program *prog); 87 88 extern struct gl_program * 89 _mesa_lookup_program(struct gl_context *ctx, GLuint id); 90 91 extern void 92 _mesa_reference_program_(struct gl_context *ctx, 93 struct gl_program **ptr, 94 struct gl_program *prog); 95 96 static inline void 97 _mesa_reference_program(struct gl_context *ctx, 98 struct gl_program **ptr, 99 struct gl_program *prog) 100 { 101 if (*ptr != prog) 102 _mesa_reference_program_(ctx, ptr, prog); 103 } 104 105 static inline void 106 _mesa_reference_vertprog(struct gl_context *ctx, 107 struct gl_vertex_program **ptr, 108 struct gl_vertex_program *prog) 109 { 110 _mesa_reference_program(ctx, (struct gl_program **) ptr, 111 (struct gl_program *) prog); 112 } 113 114 static inline void 115 _mesa_reference_fragprog(struct gl_context *ctx, 116 struct gl_fragment_program **ptr, 117 struct gl_fragment_program *prog) 118 { 119 _mesa_reference_program(ctx, (struct gl_program **) ptr, 120 (struct gl_program *) prog); 121 } 122 123 static inline void 124 _mesa_reference_geomprog(struct gl_context *ctx, 125 struct gl_geometry_program **ptr, 126 struct gl_geometry_program *prog) 127 { 128 _mesa_reference_program(ctx, (struct gl_program **) ptr, 129 (struct gl_program *) prog); 130 } 131 132 extern struct gl_program * 133 _mesa_clone_program(struct gl_context *ctx, const struct gl_program *prog); 134 135 static inline struct gl_vertex_program * 136 _mesa_clone_vertex_program(struct gl_context *ctx, 137 const struct gl_vertex_program *prog) 138 { 139 return (struct gl_vertex_program *) _mesa_clone_program(ctx, &prog->Base); 140 } 141 142 static inline struct gl_geometry_program * 143 _mesa_clone_geometry_program(struct gl_context *ctx, 144 const struct gl_geometry_program *prog) 145 { 146 return (struct gl_geometry_program *) _mesa_clone_program(ctx, &prog->Base); 147 } 148 149 static inline struct gl_fragment_program * 150 _mesa_clone_fragment_program(struct gl_context *ctx, 151 const struct gl_fragment_program *prog) 152 { 153 return (struct gl_fragment_program *) _mesa_clone_program(ctx, &prog->Base); 154 } 155 156 157 extern GLboolean 158 _mesa_insert_instructions(struct gl_program *prog, GLuint start, GLuint count); 159 160 extern GLboolean 161 _mesa_delete_instructions(struct gl_program *prog, GLuint start, GLuint count); 162 163 extern struct gl_program * 164 _mesa_combine_programs(struct gl_context *ctx, 165 const struct gl_program *progA, 166 const struct gl_program *progB); 167 168 extern void 169 _mesa_find_used_registers(const struct gl_program *prog, 170 gl_register_file file, 171 GLboolean used[], GLuint usedSize); 172 173 extern GLint 174 _mesa_find_free_register(const GLboolean used[], 175 GLuint maxRegs, GLuint firstReg); 176 177 178 extern GLboolean 179 _mesa_valid_register_index(const struct gl_context *ctx, 180 gl_shader_type shaderType, 181 gl_register_file file, GLint index); 182 183 extern void 184 _mesa_postprocess_program(struct gl_context *ctx, struct gl_program *prog); 185 186 187 static inline GLuint 188 _mesa_program_target_to_index(GLenum v) 189 { 190 switch (v) { 191 case GL_VERTEX_PROGRAM_ARB: 192 return MESA_SHADER_VERTEX; 193 case GL_FRAGMENT_PROGRAM_ARB: 194 return MESA_SHADER_FRAGMENT; 195 case GL_GEOMETRY_PROGRAM_NV: 196 return MESA_SHADER_GEOMETRY; 197 default: 198 ASSERT(0); 199 return ~0; 200 } 201 } 202 203 static inline GLenum 204 _mesa_program_index_to_target(GLuint i) 205 { 206 static const GLenum enums[MESA_SHADER_TYPES] = { 207 GL_VERTEX_PROGRAM_ARB, 208 GL_FRAGMENT_PROGRAM_ARB, 209 GL_GEOMETRY_PROGRAM_NV, 210 }; 211 if(i >= MESA_SHADER_TYPES) 212 return 0; 213 else 214 return enums[i]; 215 } 216 217 218 /* Cast wrappers from gl_program to gl_vertex/geometry/fragment_program */ 219 220 static inline struct gl_fragment_program * 221 gl_fragment_program(struct gl_program *prog) 222 { 223 return (struct gl_fragment_program *) prog; 224 } 225 226 static inline const struct gl_fragment_program * 227 gl_fragment_program_const(const struct gl_program *prog) 228 { 229 return (const struct gl_fragment_program *) prog; 230 } 231 232 233 static inline struct gl_vertex_program * 234 gl_vertex_program(struct gl_program *prog) 235 { 236 return (struct gl_vertex_program *) prog; 237 } 238 239 static inline const struct gl_vertex_program * 240 gl_vertex_program_const(const struct gl_program *prog) 241 { 242 return (const struct gl_vertex_program *) prog; 243 } 244 245 246 static inline struct gl_geometry_program * 247 gl_geometry_program(struct gl_program *prog) 248 { 249 return (struct gl_geometry_program *) prog; 250 } 251 252 static inline const struct gl_geometry_program * 253 gl_geometry_program_const(const struct gl_program *prog) 254 { 255 return (const struct gl_geometry_program *) prog; 256 } 257 258 259 #endif /* PROGRAM_H */ 260
