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authormarha <marha@users.sourceforge.net>2010-11-22 19:42:40 +0000
committermarha <marha@users.sourceforge.net>2010-11-22 19:42:40 +0000
commit85ef9930f56bf15181f9a0b238f03d55303cf411 (patch)
tree63b43286956ebd1c35c96e9b3d5305aabdf71a0f /mesalib/src/mesa/shader/slang/slang_ir.h
parent94810d19989336862251dbf69c3f3acb18a9b06d (diff)
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Updated to mesalib 7.9
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diff --git a/mesalib/src/mesa/shader/slang/slang_ir.h b/mesalib/src/mesa/shader/slang/slang_ir.h
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-/*
- * Mesa 3-D graphics library
- *
- * Copyright (C) 2005-2008 Brian Paul All Rights Reserved.
- * Copyright (C) 2009 VMware, Inc. 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 "main/imports.h"
-#include "slang_compile.h"
-#include "slang_label.h"
-#include "main/mtypes.h"
-
-
-/**
- * Intermediate Representation opcodes
- */
-typedef enum
-{
- IR_NOP = 0,
- IR_SEQ, /* sequence (eval left, then right) */
- IR_SCOPE, /* new variable scope (one child) */
-
- IR_LABEL, /* target of a jump or cjump */
-
- IR_COND, /* conditional expression/predicate */
-
- IR_IF, /* high-level IF/then/else */
- /* Children[0] = conditional expression */
- /* Children[1] = if-true part */
- /* Children[2] = if-else part, or NULL */
-
- IR_BEGIN_SUB, /* begin subroutine */
- IR_END_SUB, /* end subroutine */
- IR_RETURN, /* return from subroutine */
- IR_CALL, /* call subroutine */
-
- IR_LOOP, /* high-level loop-begin / loop-end */
- /* Children[0] = loop body */
- /* Children[1] = loop tail code, or NULL */
-
- IR_CONT, /* continue loop */
- /* n->Parent = ptr to parent IR_LOOP Node */
- IR_BREAK, /* break loop */
-
- IR_BREAK_IF_TRUE, /**< Children[0] = the condition expression */
- IR_CONT_IF_TRUE,
-
- IR_COPY, /**< assignment/copy */
- IR_MOVE, /**< assembly MOV instruction */
-
- /* vector ops: */
- IR_ADD, /**< assembly ADD instruction */
- IR_SUB,
- IR_MUL,
- IR_DIV,
- IR_DOT4,
- IR_DOT3,
- IR_DOT2,
- IR_NRM4,
- IR_NRM3,
- IR_CROSS, /* vec3 cross product */
- IR_LRP,
- IR_CLAMP,
- IR_MIN,
- IR_MAX,
- IR_CMP, /* = (op0 < 0) ? op1 : op2 */
- IR_SEQUAL, /* Set if args are equal (vector) */
- IR_SNEQUAL, /* Set if args are not equal (vector) */
- IR_SGE, /* Set if greater or equal (vector) */
- IR_SGT, /* Set if greater than (vector) */
- IR_SLE, /* Set if less or equal (vector) */
- IR_SLT, /* Set if less than (vector) */
- 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_DDX, /* derivative w.r.t. X */
- IR_DDY, /* derivative w.r.t. Y */
- IR_SIN, /* sine */
- IR_COS, /* cosine */
- IR_NOISE1, /* noise(x) */
- IR_NOISE2, /* noise(x, y) */
- IR_NOISE3, /* noise(x, y, z) */
- IR_NOISE4, /* noise(x, y, z, w) */
-
- IR_EQUAL, /* boolean equality */
- IR_NOTEQUAL,/* boolean inequality */
- IR_NOT, /* boolean not */
-
- IR_VAR, /* variable reference */
- IR_VAR_DECL,/* var declaration */
-
- IR_ELEMENT, /* array element */
- IR_FIELD, /* struct field */
- IR_SWIZZLE, /* swizzled storage access */
-
- IR_TEX, /* texture lookup */
- IR_TEXB, /* texture lookup with LOD bias */
- IR_TEXP, /* texture lookup with projection */
-
- IR_TEX_SH, /* texture lookup, shadow compare */
- IR_TEXB_SH, /* texture lookup with LOD bias, shadow compare */
- IR_TEXP_SH, /* texture lookup with projection, shadow compare */
-
- IR_FLOAT,
- IR_I_TO_F, /* int[4] to float[4] conversion */
- IR_F_TO_I, /* float[4] to int[4] conversion */
-
- IR_KILL /* fragment kill/discard */
-} slang_ir_opcode;
-
-
-/**
- * Describes where data/variables are stored in the various register files.
- *
- * In the simple case, the File, Index and Size fields indicate where
- * a variable is stored. For example, a vec3 variable may be stored
- * as (File=PROGRAM_TEMPORARY, Index=6, Size=3). Or, File[Index].
- * Or, a program input like color may be stored as
- * (File=PROGRAM_INPUT,Index=3,Size=4);
- *
- * For single-float values, the Swizzle field indicates which component
- * of the vector contains the float.
- *
- * If IsIndirect is set, the storage is accessed through an indirect
- * register lookup. The value in question will be located at:
- * File[Index + IndirectFile[IndirectIndex]]
- *
- * This is primary used for indexing arrays. For example, consider this
- * GLSL code:
- * uniform int i;
- * float a[10];
- * float x = a[i];
- *
- * here, storage for a[i] would be described by (File=PROGRAM_TEMPORAY,
- * Index=aPos, IndirectFile=PROGRAM_UNIFORM, IndirectIndex=iPos), which
- * would mean TEMP[aPos + UNIFORM[iPos]]
- */
-struct slang_ir_storage_
-{
- gl_register_file File; /**< PROGRAM_TEMPORARY, PROGRAM_INPUT, etc */
- GLint Index; /**< -1 means unallocated */
- GLint Size; /**< number of floats or ints */
- GLuint Swizzle; /**< Swizzle AND writemask info */
- GLint RefCount; /**< Used during IR tree delete */
-
- GLboolean RelAddr; /* we'll remove this eventually */
-
- GLboolean IsIndirect;
- gl_register_file IndirectFile;
- GLint IndirectIndex;
- GLuint IndirectSwizzle;
- GLuint TexTarget; /**< If File==PROGRAM_SAMPLER, one of TEXTURE_x_INDEX */
-
- /** If Parent is non-null, Index is relative to parent.
- * The other fields are ignored.
- */
- struct slang_ir_storage_ *Parent;
-};
-
-typedef struct slang_ir_storage_ slang_ir_storage;
-
-
-/**
- * Intermediate Representation (IR) tree node
- * Basically a binary tree, but IR_LRP and IR_CLAMP have three children.
- */
-typedef struct slang_ir_node_
-{
- slang_ir_opcode Opcode;
- struct slang_ir_node_ *Children[3];
- slang_ir_storage *Store; /**< location of result of this operation */
- GLint InstLocation; /**< Location of instruction emitted for this node */
-
- /** special fields depending on Opcode: */
- const char *Field; /**< If Opcode == IR_FIELD */
- GLfloat Value[4]; /**< If Opcode == IR_FLOAT */
- slang_variable *Var; /**< If Opcode == IR_VAR or IR_VAR_DECL */
- struct slang_ir_node_ *List; /**< For various linked lists */
- struct slang_ir_node_ *Parent; /**< Pointer to logical parent (ie. loop) */
- slang_label *Label; /**< Used for branches */
- const char *Comment; /**< If Opcode == IR_COMMENT */
-} slang_ir_node;
-
-
-
-/**
- * Assembly and IR info
- */
-typedef struct
-{
- slang_ir_opcode IrOpcode;
- const char *IrName;
- gl_inst_opcode InstOpcode;
- GLuint ResultSize, NumParams;
-} slang_ir_info;
-
-
-
-extern const slang_ir_info *
-_slang_ir_info(slang_ir_opcode opcode);
-
-
-extern void
-_slang_init_ir_storage(slang_ir_storage *st,
- gl_register_file file, GLint index, GLint size,
- GLuint swizzle);
-
-extern slang_ir_storage *
-_slang_new_ir_storage(gl_register_file file, GLint index, GLint size);
-
-
-extern slang_ir_storage *
-_slang_new_ir_storage_swz(gl_register_file file, GLint index, GLint size,
- GLuint swizzle);
-
-extern slang_ir_storage *
-_slang_new_ir_storage_relative(GLint index, GLint size,
- slang_ir_storage *parent);
-
-
-extern slang_ir_storage *
-_slang_new_ir_storage_indirect(gl_register_file file,
- GLint index,
- GLint size,
- gl_register_file indirectFile,
- GLint indirectIndex,
- GLuint indirectSwizzle);
-
-extern slang_ir_storage *
-_slang_new_ir_storage_sampler(GLint sampNum, GLuint texTarget, GLint size);
-
-
-extern void
-_slang_copy_ir_storage(slang_ir_storage *dst, const slang_ir_storage *src);
-
-
-extern void
-_slang_free_ir_tree(slang_ir_node *n);
-
-
-extern void
-_slang_print_ir_tree(const slang_ir_node *n, int indent);
-
-
-#endif /* SLANG_IR_H */