1 /* 2 * Mesa 3-D graphics library 3 * 4 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included 14 * in all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * 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 #ifdef __cplusplus 48 extern "C" { 49 #endif 50 51 extern struct gl_program _mesa_DummyProgram; 52 53 54 extern void 55 _mesa_init_program(struct gl_context *ctx); 56 57 extern void 58 _mesa_free_program_data(struct gl_context *ctx); 59 60 extern void 61 _mesa_update_default_objects_program(struct gl_context *ctx); 62 63 extern void 64 _mesa_set_program_error(struct gl_context *ctx, GLint pos, const char *string); 65 66 extern struct gl_program * 67 _mesa_init_gl_program(struct gl_program *prog, GLenum target, GLuint id, 68 bool is_arb_asm); 69 70 extern struct gl_program * 71 _mesa_new_program(struct gl_context *ctx, GLenum target, GLuint id, 72 bool is_arb_asm); 73 74 extern void 75 _mesa_delete_program(struct gl_context *ctx, struct gl_program *prog); 76 77 extern struct gl_program * 78 _mesa_lookup_program(struct gl_context *ctx, GLuint id); 79 80 extern void 81 _mesa_reference_program_(struct gl_context *ctx, 82 struct gl_program **ptr, 83 struct gl_program *prog); 84 85 static inline void 86 _mesa_reference_program(struct gl_context *ctx, 87 struct gl_program **ptr, 88 struct gl_program *prog) 89 { 90 if (*ptr != prog) 91 _mesa_reference_program_(ctx, ptr, prog); 92 } 93 94 extern GLboolean 95 _mesa_insert_instructions(struct gl_program *prog, GLuint start, GLuint count); 96 97 extern GLboolean 98 _mesa_delete_instructions(struct gl_program *prog, GLuint start, GLuint count, 99 void *mem_ctx); 100 101 extern void 102 _mesa_find_used_registers(const struct gl_program *prog, 103 gl_register_file file, 104 GLboolean used[], GLuint usedSize); 105 106 extern GLint 107 _mesa_find_free_register(const GLboolean used[], 108 GLuint maxRegs, GLuint firstReg); 109 110 extern GLint 111 _mesa_get_min_invocations_per_fragment(struct gl_context *ctx, 112 const struct gl_program *prog, 113 bool ignore_sample_qualifier); 114 115 static inline GLuint 116 _mesa_program_enum_to_shader_stage(GLenum v) 117 { 118 switch (v) { 119 case GL_VERTEX_PROGRAM_ARB: 120 return MESA_SHADER_VERTEX; 121 case GL_FRAGMENT_PROGRAM_ARB: 122 return MESA_SHADER_FRAGMENT; 123 case GL_FRAGMENT_SHADER_ATI: 124 return MESA_SHADER_FRAGMENT; 125 case GL_GEOMETRY_PROGRAM_NV: 126 return MESA_SHADER_GEOMETRY; 127 case GL_TESS_CONTROL_PROGRAM_NV: 128 return MESA_SHADER_TESS_CTRL; 129 case GL_TESS_EVALUATION_PROGRAM_NV: 130 return MESA_SHADER_TESS_EVAL; 131 case GL_COMPUTE_PROGRAM_NV: 132 return MESA_SHADER_COMPUTE; 133 default: 134 assert(0); 135 return ~0; 136 } 137 } 138 139 140 static inline GLenum 141 _mesa_shader_stage_to_program(unsigned stage) 142 { 143 switch (stage) { 144 case MESA_SHADER_VERTEX: 145 return GL_VERTEX_PROGRAM_ARB; 146 case MESA_SHADER_FRAGMENT: 147 return GL_FRAGMENT_PROGRAM_ARB; 148 case MESA_SHADER_GEOMETRY: 149 return GL_GEOMETRY_PROGRAM_NV; 150 case MESA_SHADER_TESS_CTRL: 151 return GL_TESS_CONTROL_PROGRAM_NV; 152 case MESA_SHADER_TESS_EVAL: 153 return GL_TESS_EVALUATION_PROGRAM_NV; 154 case MESA_SHADER_COMPUTE: 155 return GL_COMPUTE_PROGRAM_NV; 156 } 157 158 assert(!"Unexpected shader stage in _mesa_shader_stage_to_program"); 159 return GL_VERTEX_PROGRAM_ARB; 160 } 161 162 #ifdef __cplusplus 163 } /* extern "C" */ 164 #endif 165 166 #endif /* PROGRAM_H */ 167
