1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
|
/*
* Mesa 3-D graphics library
* Version: 6.5
*
* Copyright (C) 1999-2005 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 prog_instruction.h
*
* Private vertex program types and constants only used by files
* related to vertex programs.
*
* \author Brian Paul
* \author Keith Whitwell
* \author Ian Romanick <idr@us.ibm.com>
*/
#ifndef PROG_INSTRUCTION_H
#define PROG_INSTRUCTION_H
/**
* Condition codes for GL_NV_fragment_program
*/
/*@{*/
#define COND_GT 1 /* greater than zero */
#define COND_EQ 2 /* equal to zero */
#define COND_LT 3 /* less than zero */
#define COND_UN 4 /* unordered (NaN) */
#define COND_GE 5 /* greater then or equal to zero */
#define COND_LE 6 /* less then or equal to zero */
#define COND_NE 7 /* not equal to zero */
#define COND_TR 8 /* always true */
#define COND_FL 9 /* always false */
/*@}*/
/*
* Instruction precision for GL_NV_fragment_program
*/
/*@{*/
#define FLOAT32 0x1
#define FLOAT16 0x2
#define FIXED12 0x4
/*@}*/
/**
* Program instruction opcodes, for both vertex and fragment programs.
* \note changes to this opcode list must be reflected in t_vb_arbprogram.c
*/
/* ARB_vp ARB_fp NV_vp NV_fp */
enum prog_opcode { /*---------------------------------*/
OPCODE_ABS, /* X X 1.1 */
OPCODE_ADD, /* X X X X */
OPCODE_ARA, /* 2 */
OPCODE_ARL, /* X X */
OPCODE_ARL_NV, /* 2 */
OPCODE_ARR, /* 2 */
OPCODE_BRA, /* 2 */
OPCODE_CAL, /* 2 2 */
OPCODE_CMP, /* X */
OPCODE_COS, /* X 2 X */
OPCODE_DDX, /* X */
OPCODE_DDY, /* X */
OPCODE_DP3, /* X X X X */
OPCODE_DP4, /* X X X X */
OPCODE_DPH, /* X X 1.1 */
OPCODE_DST, /* X X X X */
OPCODE_END, /* X X X X */
OPCODE_EX2, /* X X 2 X */
OPCODE_EXP, /* X X */
OPCODE_FLR, /* X X 2 X */
OPCODE_FRC, /* X X 2 X */
OPCODE_KIL, /* X */
OPCODE_KIL_NV, /* X */
OPCODE_LG2, /* X X 2 X */
OPCODE_LIT, /* X X X X */
OPCODE_LOG, /* X X */
OPCODE_LRP, /* X X */
OPCODE_MAD, /* X X X X */
OPCODE_MAX, /* X X X X */
OPCODE_MIN, /* X X X X */
OPCODE_MOV, /* X X X X */
OPCODE_MUL, /* X X X X */
OPCODE_PK2H, /* X */
OPCODE_PK2US, /* X */
OPCODE_PK4B, /* X */
OPCODE_PK4UB, /* X */
OPCODE_POW, /* X X X */
OPCODE_POPA, /* 3 */
OPCODE_PRINT, /* X X */
OPCODE_PUSHA, /* 3 */
OPCODE_RCC, /* 1.1 */
OPCODE_RCP, /* X X X X */
OPCODE_RET, /* 2 2 */
OPCODE_RFL, /* X X */
OPCODE_RSQ, /* X X X X */
OPCODE_SCS, /* X */
OPCODE_SEQ, /* 2 X */
OPCODE_SFL, /* 2 X */
OPCODE_SGE, /* X X X X */
OPCODE_SGT, /* 2 X */
OPCODE_SIN, /* X 2 X */
OPCODE_SLE, /* 2 X */
OPCODE_SLT, /* X X X X */
OPCODE_SNE, /* 2 X */
OPCODE_SSG, /* 2 */
OPCODE_STR, /* 2 X */
OPCODE_SUB, /* X X 1.1 X */
OPCODE_SWZ, /* X X */
OPCODE_TEX, /* X 3 X */
OPCODE_TXB, /* X 3 */
OPCODE_TXD, /* X */
OPCODE_TXL, /* 3 2 */
OPCODE_TXP, /* X */
OPCODE_TXP_NV, /* 3 X */
OPCODE_UP2H, /* X */
OPCODE_UP2US, /* X */
OPCODE_UP4B, /* X */
OPCODE_UP4UB, /* X */
OPCODE_X2D, /* X */
OPCODE_XPD, /* X X */
MAX_OPCODE
};
/**
* Instruction source register.
*/
struct prog_src_register
{
GLuint File:4; /**< One of the PROGRAM_* register file values. */
GLint Index:9; /**< May be negative for relative addressing. */
GLuint Swizzle:12;
GLuint RelAddr:1;
/**
* \name Source register "sign" control.
*
* The ARB and NV extensions allow varrying degrees of control over the
* sign of the source vector components. These values allow enough control
* for all flavors of the extensions.
*/
/*@{*/
/**
* Per-component negation for the SWZ instruction.
*
* \since
* ARB_vertex_program, ARB_fragment_program
*/
GLuint NegateBase:4;
/**
* Take the component-wise absolute value.
*
* \since
* NV_fragment_program, NV_fragment_program_option, NV_vertex_program2,
* NV_vertex_program2_option.
*/
GLuint Abs:1;
/**
* Take the component-wise negation. The negation occurs \b after the
* (optional) absolute value operation.
*/
GLuint NegateAbs:1;
/*@}*/
};
/**
* Instruction destination register.
*/
struct prog_dst_register
{
/**
* One of the PROGRAM_* register file values.
*/
GLuint File:4;
GLuint Index:8;
GLuint WriteMask:4;
/**
* \name Conditional destination update control.
*
* \since
* NV_fragment_program, NV_fragment_program_option, NV_vertex_program2,
* NV_vertex_program2_option.
*/
/*@{*/
/**
* Takes one of the 9 possible condition values (EQ, FL, GT, GE, LE, LT,
* NE, TR, or UN). Destination update is enabled if the matching
* (swizzled) condition code value passes. When a conditional update mask
* is not specified, this will be \c COND_TR.
*/
GLuint CondMask:4;
/**
* Condition code swizzle value.
*/
GLuint CondSwizzle:12;
/**
* Selects the condition code register to use for conditional destination
* update masking. In NV_fragmnet_program or NV_vertex_program2 mode, only
* condition code register 0 is available. In NV_vertex_program3 mode,
* condition code registers 0 and 1 are available.
*/
GLuint CondSrc:1;
/*@}*/
GLuint pad:31;
};
/**
* Vertex/fragment program instruction.
*/
struct prog_instruction
{
enum prog_opcode Opcode;
#if FEATURE_MESA_program_debug
GLshort StringPos;
#endif
/**
* Arbitrary data. Used for the PRINT, CAL, and BRA instructions.
*/
void *Data;
struct prog_src_register SrcReg[3];
struct prog_dst_register DstReg;
/**
* Indicates that the instruction should update the condition code
* register.
*
* \since
* NV_fragment_program, NV_fragment_program_option, NV_vertex_program2,
* NV_vertex_program2_option.
*/
GLuint CondUpdate:1;
/**
* If prog_instruction::cc_update is \c GL_TRUE, this value selects the
* condition code register that is to be updated.
*
* In GL_NV_fragment_program or GL_NV_vertex_program2 mode, only condition
* code register 0 is available. In GL_NV_vertex_program3 mode, condition code registers
* 0 and 1 are available.
*
* \since
* NV_fragment_program, NV_fragment_program_option, NV_vertex_program2,
* NV_vertex_program2_option.
*/
GLuint CondDst:1;
/**
* Saturate each value of the vectored result to the range [0,1] or the
* range [-1,1]. \c SSAT mode (i.e., saturation to the range [-1,1]) is
* only available in NV_fragment_program2 mode.
*
* \since
* NV_fragment_program, NV_fragment_program_option, NV_vertex_program3.
*/
GLuint Saturate:1;
/**
* Per-instruction selectable precision.
*
* \since
* NV_fragment_program, NV_fragment_program_option.
*/
GLuint Precision:3;
/**
* \name Texture source controls.
*
* The texture source controls are only used with the \c TEX, \c TXD,
* \c TXL, and \c TXP instructions.
*
* \since
* ARB_fragment_program, NV_fragment_program, NV_vertex_program3.
*/
/*@{*/
/**
* Source texture unit. OpenGL supports a maximum of 32 texture
* units.
*/
GLuint TexSrcUnit:5;
/**
* Source texture target, one of TEXTURE_{1D,2D,3D,CUBE,RECT}_INDEX.
*/
GLuint TexSrcTarget:3;
/*@}*/
};
extern void
_mesa_init_instruction(struct prog_instruction *inst);
extern GLuint
_mesa_num_inst_src_regs(enum prog_opcode opcode);
extern const char *
_mesa_opcode_string(enum prog_opcode opcode);
#endif /* PROG_INSTRUCTION_H */
|
