2 * Mesa 3-D graphics library
5 * Copyright (C) 2005-2007 Brian Paul All Rights Reserved.
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:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
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.
27 * Mesa GLSL Intermediate Representation tree types and constants.
37 #include "slang_compile.h"
42 * Intermediate Representation opcode
47 IR_SEQ
, /* sequence (eval left, then right) */
48 IR_LABEL
, /* target of a jump or cjump */
49 IR_JUMP
, /* unconditional jump */
50 IR_CJUMP
, /* conditional jump */
51 IR_COND
, /* conditional expression */
52 IR_CALL
, /* call subroutine */
60 IR_CROSS
, /* vec3 cross product */
63 IR_SEQUAL
, /* Set if not equal */
64 IR_SNEQUAL
, /* Set if equal */
65 IR_SGE
, /* Set if greater or equal */
66 IR_SGT
, /* Set if greater than */
70 IR_LOG2
, /* log base 2 */
71 IR_RSQ
, /* 1/sqrt() */
72 IR_RCP
, /* reciprocol */
75 IR_ABS
, /* absolute value */
79 IR_NOT
, /* logical not */
80 IR_VAR
, /* variable reference */
81 IR_VAR_DECL
,/* var declaration */
82 IR_TEX
, /* texture lookup */
83 IR_TEXB
, /* texture lookup with LOD bias */
84 IR_TEXP
, /* texture lookup with projection */
92 * Describes where data storage is allocated.
96 enum register_file File
; /**< PROGRAM_TEMPORARY, PROGRAM_INPUT, etc */
97 GLint Index
; /**< -1 means unallocated */
98 GLint Size
; /**< number of floats */
103 * Intermediate Representation (IR) tree node
105 typedef struct slang_ir_node_
107 slang_ir_opcode Opcode
;
108 struct slang_ir_node_
*Children
[2];
112 GLuint Writemask
; /**< If Opcode == IR_MOVE */
113 GLfloat Value
[4]; /**< If Opcode == IR_FLOAT */
115 slang_ir_storage
*Store
;
119 #endif /* SLANG_IR_H */