2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2003 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.
26 /* Private fragment program types and constants only used by files
27 * related to fragment programs.
37 /* Fragment input registers / attributes */
38 #define FRAG_ATTRIB_WPOS 0
39 #define FRAG_ATTRIB_COL0 1
40 #define FRAG_ATTRIB_COL1 2
41 #define FRAG_ATTRIB_FOGC 3
42 #define FRAG_ATTRIB_TEX0 4
43 #define FRAG_ATTRIB_TEX1 5
44 #define FRAG_ATTRIB_TEX2 6
45 #define FRAG_ATTRIB_TEX3 7
46 #define FRAG_ATTRIB_TEX4 8
47 #define FRAG_ATTRIB_TEX5 9
48 #define FRAG_ATTRIB_TEX6 10
49 #define FRAG_ATTRIB_TEX7 11
51 #define FRAG_OUTPUT_COLR 0
52 #define FRAG_OUTPUT_COLH 1
53 #define FRAG_OUTPUT_DEPR 2
57 #define COND_GT 1 /* greater than zero */
58 #define COND_EQ 2 /* equal to zero */
59 #define COND_LT 3 /* less than zero */
60 #define COND_UN 4 /* unordered (NaN) */
61 #define COND_GE 5 /* greater then or equal to zero */
62 #define COND_LE 6 /* less then or equal to zero */
63 #define COND_NE 7 /* not equal to zero */
64 #define COND_TR 8 /* always true */
65 #define COND_FL 9 /* always false */
68 /* instruction precision */
74 /* Fragment program instruction opcodes */
121 FP_OPCODE_END
/* private opcode */
125 /* Instruction source register */
126 struct fp_src_register
128 enum register_file File
;
131 GLboolean NegateBase
; /* negate before absolute value? */
132 GLboolean Abs
; /* take absolute value? */
133 GLboolean NegateAbs
; /* negate after absolute value? */
137 /* Instruction destination register */
138 struct fp_dst_register
140 enum register_file File
;
142 GLboolean WriteMask
[4];
144 GLuint CondSwizzle
[4];
148 /* Fragment program instruction */
149 struct fp_instruction
151 enum fp_opcode Opcode
;
152 struct fp_src_register SrcReg
[3];
153 struct fp_dst_register DstReg
;
155 GLboolean UpdateCondRegister
;
156 GLubyte Precision
; /* FLOAT32, FLOAT16 or FIXED12 */
157 GLubyte TexSrcUnit
; /* texture unit for TEX, TXD, TXP instructions */
158 GLubyte TexSrcBit
; /* TEXTURE_1D,2D,3D,CUBE,RECT_BIT source target */
159 #if FEATURE_MESA_program_debug