2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2004 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.
29 * XXX TO-DO: Rename this file "fragprog.h" since it's not NV-specific.
39 /* output registers */
40 #define FRAG_OUTPUT_COLR 0
41 #define FRAG_OUTPUT_COLH 1
42 #define FRAG_OUTPUT_DEPR 2
46 #define COND_GT 1 /* greater than zero */
47 #define COND_EQ 2 /* equal to zero */
48 #define COND_LT 3 /* less than zero */
49 #define COND_UN 4 /* unordered (NaN) */
50 #define COND_GE 5 /* greater then or equal to zero */
51 #define COND_LE 6 /* less then or equal to zero */
52 #define COND_NE 7 /* not equal to zero */
53 #define COND_TR 8 /* always true */
54 #define COND_FL 9 /* always false */
57 /* instruction precision */
63 /* Fragment program instruction opcodes */
65 FP_OPCODE_ABS
, /* ARB_f_p only */
67 FP_OPCODE_CMP
, /* ARB_f_p only */
69 FP_OPCODE_DDX
, /* NV_f_p only */
70 FP_OPCODE_DDY
, /* NV_f_p only */
73 FP_OPCODE_DPH
, /* ARB_f_p only */
75 FP_OPCODE_END
, /* private opcode */
79 FP_OPCODE_KIL
, /* ARB_f_p only */
80 FP_OPCODE_KIL_NV
, /* NV_f_p only */
89 FP_OPCODE_PK2H
, /* NV_f_p only */
90 FP_OPCODE_PK2US
, /* NV_f_p only */
91 FP_OPCODE_PK4B
, /* NV_f_p only */
92 FP_OPCODE_PK4UB
, /* NV_f_p only */
94 FP_OPCODE_PRINT
, /* Mesa only */
96 FP_OPCODE_RFL
, /* NV_f_p only */
98 FP_OPCODE_SCS
, /* ARB_f_p only */
99 FP_OPCODE_SEQ
, /* NV_f_p only */
100 FP_OPCODE_SFL
, /* NV_f_p only */
101 FP_OPCODE_SGE
, /* NV_f_p only */
102 FP_OPCODE_SGT
, /* NV_f_p only */
104 FP_OPCODE_SLE
, /* NV_f_p only */
106 FP_OPCODE_SNE
, /* NV_f_p only */
107 FP_OPCODE_STR
, /* NV_f_p only */
109 FP_OPCODE_SWZ
, /* ARB_f_p only */
111 FP_OPCODE_TXB
, /* ARB_f_p only */
112 FP_OPCODE_TXD
, /* NV_f_p only */
113 FP_OPCODE_TXP
, /* ARB_f_p only */
114 FP_OPCODE_TXP_NV
, /* NV_f_p only */
115 FP_OPCODE_UP2H
, /* NV_f_p only */
116 FP_OPCODE_UP2US
, /* NV_f_p only */
117 FP_OPCODE_UP4B
, /* NV_f_p only */
118 FP_OPCODE_UP4UB
, /* NV_f_p only */
119 FP_OPCODE_X2D
, /* NV_f_p only - 2d mat mul */
120 FP_OPCODE_XPD
/* ARB_f_p only - cross product */
124 /* Instruction source register */
125 struct fp_src_register
130 GLuint NegateBase
:4; /* ARB: negate/extended negate.
131 NV: negate before absolute value? */
132 GLuint Abs
:1; /* NV: take absolute value? */
133 GLuint NegateAbs
:1; /* NV: negate after absolute value? */
137 /* Instruction destination register */
138 struct fp_dst_register
143 GLuint CondMask
:4; /* NV: enough bits? */
144 GLuint CondSwizzle
:12; /* NV: enough bits? */
148 /* Fragment program instruction */
149 struct fp_instruction
153 GLuint UpdateCondRegister
:1; /* NV */
154 GLuint Precision
:2; /* NV: unused/unneeded? */
155 GLuint TexSrcUnit
:4; /* texture unit for TEX, TXD, TXP instructions */
156 GLuint TexSrcIdx
:3; /* TEXTURE_1D,2D,3D,CUBE,RECT_INDEX source target */
158 #if FEATURE_MESA_program_debug
159 GLint StringPos
:15; /* enough bits? */
162 void *Data
; /* some arbitrary data, only used for PRINT instruction now */
163 struct fp_src_register SrcReg
[3];
164 struct fp_dst_register DstReg
;