/* * Mesa 3-D graphics library * Version: 6.5.3 * * Copyright (C) 2005-2007 Brian Paul All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /** * \file slang_ir.h * Mesa GLSL Intermediate Representation tree types and constants. * \author Brian Paul */ #ifndef SLANG_IR_H #define SLANG_IR_H #include "imports.h" #include "slang_compile.h" #include "mtypes.h" /** * Intermediate Representation opcode */ typedef enum { IR_NOP = 0, IR_SEQ, /* sequence (eval left, then right) */ IR_LABEL, /* target of a jump or cjump */ IR_JUMP, /* unconditional jump */ IR_CJUMP, /* conditional jump */ IR_COND, /* conditional expression */ IR_CALL, /* call subroutine */ IR_MOVE, IR_ADD, IR_SUB, IR_MUL, IR_DIV, IR_DOT4, IR_DOT3, IR_CROSS, /* vec3 cross product */ IR_MIN, IR_MAX, IR_SEQUAL, /* Set if not equal */ IR_SNEQUAL, /* Set if equal */ IR_SGE, /* Set if greater or equal */ IR_SGT, /* Set if greater than */ IR_POW, /* x^y */ IR_EXP, /* e^x */ IR_EXP2, /* 2^x */ IR_LOG2, /* log base 2 */ IR_RSQ, /* 1/sqrt() */ IR_RCP, /* reciprocol */ IR_FLOOR, IR_FRAC, IR_ABS, /* absolute value */ IR_NEG, /* negate */ IR_SIN, /* sine */ IR_COS, /* cosine */ IR_NOT, /* logical not */ IR_VAR, /* variable reference */ IR_VAR_DECL,/* var declaration */ IR_TEX, /* texture lookup */ IR_TEXB, /* texture lookup with LOD bias */ IR_TEXP, /* texture lookup with projection */ IR_FLOAT, IR_FIELD, IR_I_TO_F } slang_ir_opcode; /** * Describes where data storage is allocated. */ typedef struct { enum register_file File; /**< PROGRAM_TEMPORARY, PROGRAM_INPUT, etc */ GLint Index; /**< -1 means unallocated */ GLint Size; /**< number of floats */ } slang_ir_storage; /** * Intermediate Representation (IR) tree node */ typedef struct slang_ir_node_ { slang_ir_opcode Opcode; struct slang_ir_node_ *Children[2]; const char *Comment; const char *Target; GLuint Swizzle; GLuint Writemask; /**< If Opcode == IR_MOVE */ GLfloat Value[4]; /**< If Opcode == IR_FLOAT */ slang_variable *Var; slang_ir_storage *Store; } slang_ir_node; #endif /* SLANG_IR_H */