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
|
/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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, sub license, 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 (including the
* next paragraph) 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
*
**************************************************************************/
#if !defined TGSI_EXEC_H
#define TGSI_EXEC_H
#include "pipe/p_compiler.h"
#if defined __cplusplus
extern "C" {
#endif
#define NUM_CHANNELS 4 /* R,G,B,A */
#define QUAD_SIZE 4 /* 4 pixel/quad */
/**
* Registers may be treated as float, signed int or unsigned int.
*/
union tgsi_exec_channel
{
float f[QUAD_SIZE];
int i[QUAD_SIZE];
unsigned u[QUAD_SIZE];
};
/**
* A vector[RGBA] of channels[4 pixels]
*/
struct tgsi_exec_vector
{
union tgsi_exec_channel xyzw[NUM_CHANNELS];
};
/**
* For fragment programs, information for computing fragment input
* values from plane equation of the triangle/line.
*/
struct tgsi_interp_coef
{
float a0[NUM_CHANNELS]; /* in an xyzw layout */
float dadx[NUM_CHANNELS];
float dady[NUM_CHANNELS];
};
struct softpipe_tile_cache; /**< Opaque to TGSI */
/**
* Information for sampling textures, which must be implemented
* by code outside the TGSI executor.
*/
struct tgsi_sampler
{
const struct pipe_sampler_state *state;
struct pipe_texture *texture;
/** Get samples for four fragments in a quad */
void (*get_samples)(struct tgsi_sampler *sampler,
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
float lodbias,
float rgba[NUM_CHANNELS][QUAD_SIZE]);
void *pipe; /*XXX temporary*/
struct softpipe_tile_cache *cache;
};
/**
* For branching/calling subroutines.
*/
struct tgsi_exec_labels
{
unsigned labels[128][2];
unsigned count;
};
/*
* Locations of various utility registers (_I = Index, _C = Channel)
*/
#define TGSI_EXEC_TEMP_00000000_I 32
#define TGSI_EXEC_TEMP_00000000_C 0
#define TGSI_EXEC_TEMP_7FFFFFFF_I 32
#define TGSI_EXEC_TEMP_7FFFFFFF_C 1
#define TGSI_EXEC_TEMP_80000000_I 32
#define TGSI_EXEC_TEMP_80000000_C 2
#define TGSI_EXEC_TEMP_FFFFFFFF_I 32
#define TGSI_EXEC_TEMP_FFFFFFFF_C 3
#define TGSI_EXEC_TEMP_ONE_I 33
#define TGSI_EXEC_TEMP_ONE_C 0
#define TGSI_EXEC_TEMP_TWO_I 33
#define TGSI_EXEC_TEMP_TWO_C 1
#define TGSI_EXEC_TEMP_128_I 33
#define TGSI_EXEC_TEMP_128_C 2
#define TGSI_EXEC_TEMP_MINUS_128_I 33
#define TGSI_EXEC_TEMP_MINUS_128_C 3
#define TGSI_EXEC_TEMP_KILMASK_I 34
#define TGSI_EXEC_TEMP_KILMASK_C 0
#define TGSI_EXEC_TEMP_OUTPUT_I 34
#define TGSI_EXEC_TEMP_OUTPUT_C 1
#define TGSI_EXEC_TEMP_PRIMITIVE_I 34
#define TGSI_EXEC_TEMP_PRIMITIVE_C 2
#define TGSI_EXEC_TEMP_R0 35
#define TGSI_EXEC_NUM_TEMPS (32 + 4)
#define TGSI_EXEC_NUM_ADDRS 1
#define TGSI_EXEC_NUM_IMMEDIATES 256
#define TGSI_EXEC_MAX_COND_NESTING 10
#define TGSI_EXEC_MAX_LOOP_NESTING 10
#define TGSI_EXEC_MAX_CALL_NESTING 10
/**
* Run-time virtual machine state for executing TGSI shader.
*/
struct tgsi_exec_machine
{
/*
* 32 program temporaries
* 4 internal temporaries
* 1 address
* 1 temporary of padding to align to 16 bytes
*/
struct tgsi_exec_vector _Temps[TGSI_EXEC_NUM_TEMPS + TGSI_EXEC_NUM_ADDRS + 1];
/*
* This will point to _Temps after aligning to 16B boundary.
*/
struct tgsi_exec_vector *Temps;
struct tgsi_exec_vector *Addrs;
struct tgsi_sampler *Samplers;
float Imms[TGSI_EXEC_NUM_IMMEDIATES][4];
unsigned ImmLimit;
float (*Consts)[4];
struct tgsi_exec_vector *Inputs;
struct tgsi_exec_vector *Outputs;
const struct tgsi_token *Tokens;
float QuadX, QuadY; /**< for frag progs only */
unsigned Processor;
/* GEOMETRY processor only. */
unsigned *Primitives;
/* FRAGMENT processor only. */
const struct tgsi_interp_coef *InterpCoefs;
/* Conditional execution masks */
uint CondMask; /**< For IF/ELSE/ENDIF */
uint LoopMask; /**< For BGNLOOP/ENDLOOP */
uint ContMask; /**< For loop CONT statements */
uint FuncMask; /**< For function calls */
uint ExecMask; /**< = CondMask & LoopMask */
/** Condition mask stack (for nested conditionals) */
uint CondStack[TGSI_EXEC_MAX_COND_NESTING];
int CondStackTop;
/** Loop mask stack (for nested loops) */
uint LoopStack[TGSI_EXEC_MAX_LOOP_NESTING];
int LoopStackTop;
/** Loop continue mask stack (see comments in tgsi_exec.c) */
uint ContStack[TGSI_EXEC_MAX_LOOP_NESTING];
int ContStackTop;
/** Function execution mask stack (for executing subroutine code) */
uint FuncStack[TGSI_EXEC_MAX_CALL_NESTING];
int FuncStackTop;
/** Function call stack for saving/restoring the program counter */
uint CallStack[TGSI_EXEC_MAX_CALL_NESTING];
int CallStackTop;
struct tgsi_full_instruction *Instructions;
uint NumInstructions;
struct tgsi_full_declaration *Declarations;
uint NumDeclarations;
struct tgsi_exec_labels Labels;
};
void
tgsi_exec_machine_init(
struct tgsi_exec_machine *mach,
const struct tgsi_token *tokens,
unsigned numSamplers,
struct tgsi_sampler *samplers);
uint
tgsi_exec_machine_run(
struct tgsi_exec_machine *mach );
#if defined __cplusplus
} /* extern "C" */
#endif
#endif /* TGSI_EXEC_H */
|
