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/mtypes.h" 44 45 46 #ifdef __cplusplus 47 extern "C" { 48 #endif 49 50 extern struct gl_program _mesa_DummyProgram; 51 52 53 extern void 54 _mesa_init_program(struct gl_context *ctx); 55 56 extern void 57 _mesa_free_program_data(struct gl_context *ctx); 58 59 extern void 60 _mesa_update_default_objects_program(struct gl_context *ctx); 61 62 extern void 63 _mesa_set_program_error(struct gl_context *ctx, GLint pos, const char *string); 64 65 extern struct gl_program * 66 _mesa_init_gl_program(struct gl_program *prog, GLenum target, GLuint id, 67 bool is_arb_asm); 68 69 extern struct gl_program * 70 _mesa_new_program(struct gl_context *ctx, GLenum target, GLuint id, 71 bool is_arb_asm); 72 73 extern void 74 _mesa_delete_program(struct gl_context *ctx, struct gl_program *prog); 75 76 extern struct gl_program * 77 _mesa_lookup_program(struct gl_context *ctx, GLuint id); 78 79 extern void 80 _mesa_reference_program_(struct gl_context *ctx, 81 struct gl_program **ptr, 82 struct gl_program *prog); 83 84 static inline void 85 _mesa_reference_program(struct gl_context *ctx, 86 struct gl_program **ptr, 87 struct gl_program *prog) 88 { 89 if (*ptr != prog) 90 _mesa_reference_program_(ctx, ptr, prog); 91 } 92 93 extern GLboolean 94 _mesa_insert_instructions(struct gl_program *prog, GLuint start, GLuint count); 95 96 extern GLboolean 97 _mesa_delete_instructions(struct gl_program *prog, GLuint start, GLuint count, 98 void *mem_ctx); 99 100 extern void 101 _mesa_find_used_registers(const struct gl_program *prog, 102 gl_register_file file, 103 GLboolean used[], GLuint usedSize); 104 105 extern GLint 106 _mesa_find_free_register(const GLboolean used[], 107 GLuint maxRegs, GLuint firstReg); 108 109 extern GLint 110 _mesa_get_min_invocations_per_fragment(struct gl_context *ctx, 111 const struct gl_program *prog, 112 bool ignore_sample_qualifier); 113 114 static inline GLuint 115 _mesa_program_enum_to_shader_stage(GLenum v) 116 { 117 switch (v) { 118 case GL_VERTEX_PROGRAM_ARB: 119 return MESA_SHADER_VERTEX; 120 case GL_FRAGMENT_PROGRAM_ARB: 121 return MESA_SHADER_FRAGMENT; 122 case GL_FRAGMENT_SHADER_ATI: 123 return MESA_SHADER_FRAGMENT; 124 case GL_GEOMETRY_PROGRAM_NV: 125 return MESA_SHADER_GEOMETRY; 126 case GL_TESS_CONTROL_PROGRAM_NV: 127 return MESA_SHADER_TESS_CTRL; 128 case GL_TESS_EVALUATION_PROGRAM_NV: 129 return MESA_SHADER_TESS_EVAL; 130 case GL_COMPUTE_PROGRAM_NV: 131 return MESA_SHADER_COMPUTE; 132 default: 133 assert(0); 134 return ~0; 135 } 136 } 137 138 139 static inline GLenum 140 _mesa_shader_stage_to_program(unsigned stage) 141 { 142 switch (stage) { 143 case MESA_SHADER_VERTEX: 144 return GL_VERTEX_PROGRAM_ARB; 145 case MESA_SHADER_FRAGMENT: 146 return GL_FRAGMENT_PROGRAM_ARB; 147 case MESA_SHADER_GEOMETRY: 148 return GL_GEOMETRY_PROGRAM_NV; 149 case MESA_SHADER_TESS_CTRL: 150 return GL_TESS_CONTROL_PROGRAM_NV; 151 case MESA_SHADER_TESS_EVAL: 152 return GL_TESS_EVALUATION_PROGRAM_NV; 153 case MESA_SHADER_COMPUTE: 154 return GL_COMPUTE_PROGRAM_NV; 155 } 156 157 assert(!"Unexpected shader stage in _mesa_shader_stage_to_program"); 158 return GL_VERTEX_PROGRAM_ARB; 159 } 160 161 162 GLbitfield 163 gl_external_samplers(const struct gl_program *prog); 164 165 166 #ifdef __cplusplus 167 } /* extern "C" */ 168 #endif 169 170 #endif /* PROGRAM_H */ 171
