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
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
|
/* libs/pixelflinger/codeflinger/GGLAssembler.h
**
** Copyright 2006, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#ifndef ANDROID_GGLASSEMBLER_H
#define ANDROID_GGLASSEMBLER_H
#include <stdint.h>
#include <sys/types.h>
#include <private/pixelflinger/ggl_context.h>
#include "ARMAssemblerProxy.h"
namespace android {
// ----------------------------------------------------------------------------
#define CONTEXT_LOAD(REG, FIELD) \
LDR(AL, REG, mBuilderContext.Rctx, immed12_pre(GGL_OFFSETOF(FIELD)))
#define CONTEXT_STORE(REG, FIELD) \
STR(AL, REG, mBuilderContext.Rctx, immed12_pre(GGL_OFFSETOF(FIELD)))
class RegisterAllocator
{
public:
class RegisterFile;
RegisterAllocator(int arch);
RegisterFile& registerFile();
int reserveReg(int reg);
int obtainReg();
void recycleReg(int reg);
void reset();
class RegisterFile
{
public:
RegisterFile(int arch);
RegisterFile(const RegisterFile& rhs, int arch);
~RegisterFile();
void reset();
bool operator == (const RegisterFile& rhs) const;
bool operator != (const RegisterFile& rhs) const {
return !operator == (rhs);
}
int reserve(int reg);
void reserveSeveral(uint32_t regMask);
void recycle(int reg);
void recycleSeveral(uint32_t regMask);
int obtain();
inline int isUsed(int reg) const;
bool hasFreeRegs() const;
int countFreeRegs() const;
uint32_t touched() const;
inline uint32_t status() const { return mStatus; }
enum {
OUT_OF_REGISTERS = 0x1
};
private:
uint32_t mRegs;
uint32_t mTouched;
uint32_t mStatus;
int mArch;
uint32_t mRegisterOffset; // lets reg alloc use 2..17 for mips
// while arm uses 0..15
};
class Scratch
{
public:
Scratch(RegisterFile& regFile)
: mRegFile(regFile), mScratch(0) {
}
~Scratch() {
mRegFile.recycleSeveral(mScratch);
}
int obtain() {
int reg = mRegFile.obtain();
mScratch |= 1<<reg;
return reg;
}
void recycle(int reg) {
mRegFile.recycle(reg);
mScratch &= ~(1<<reg);
}
bool isUsed(int reg) {
return (mScratch & (1<<reg));
}
int countFreeRegs() {
return mRegFile.countFreeRegs();
}
private:
RegisterFile& mRegFile;
uint32_t mScratch;
};
class Spill
{
public:
Spill(RegisterFile& regFile, ARMAssemblerInterface& gen, uint32_t reglist)
: mRegFile(regFile), mGen(gen), mRegList(reglist), mCount(0)
{
if (reglist) {
int count = 0;
while (reglist) {
count++;
reglist &= ~(1 << (31 - __builtin_clz(reglist)));
}
if (count == 1) {
int reg = 31 - __builtin_clz(mRegList);
mGen.STR(mGen.AL, reg, mGen.SP, mGen.immed12_pre(-4, 1));
} else {
mGen.STM(mGen.AL, mGen.DB, mGen.SP, 1, mRegList);
}
mRegFile.recycleSeveral(mRegList);
mCount = count;
}
}
~Spill() {
if (mRegList) {
if (mCount == 1) {
int reg = 31 - __builtin_clz(mRegList);
mGen.LDR(mGen.AL, reg, mGen.SP, mGen.immed12_post(4));
} else {
mGen.LDM(mGen.AL, mGen.IA, mGen.SP, 1, mRegList);
}
mRegFile.reserveSeveral(mRegList);
}
}
private:
RegisterFile& mRegFile;
ARMAssemblerInterface& mGen;
uint32_t mRegList;
int mCount;
};
private:
RegisterFile mRegs;
};
// ----------------------------------------------------------------------------
class GGLAssembler : public ARMAssemblerProxy, public RegisterAllocator
{
public:
GGLAssembler(ARMAssemblerInterface* target);
virtual ~GGLAssembler();
uint32_t* base() const { return 0; } // XXX
uint32_t* pc() const { return 0; } // XXX
void reset(int opt_level);
virtual void prolog();
virtual void epilog(uint32_t touched);
// generate scanline code for given needs
int scanline(const needs_t& needs, context_t const* c);
int scanline_core(const needs_t& needs, context_t const* c);
enum {
CLEAR_LO = 0x0001,
CLEAR_HI = 0x0002,
CORRUPTIBLE = 0x0004,
FIRST = 0x0008
};
enum { //load/store flags
WRITE_BACK = 0x0001
};
struct reg_t {
reg_t() : reg(-1), flags(0) {
}
reg_t(int r, int f=0)
: reg(r), flags(f) {
}
void setTo(int r, int f=0) {
reg=r; flags=f;
}
int reg;
uint16_t flags;
};
struct integer_t : public reg_t {
integer_t() : reg_t(), s(0) {
}
integer_t(int r, int sz=32, int f=0)
: reg_t(r, f), s(sz) {
}
void setTo(int r, int sz=32, int f=0) {
reg_t::setTo(r, f); s=sz;
}
int8_t s;
inline int size() const { return s; }
};
struct pixel_t : public reg_t {
pixel_t() : reg_t() {
memset(&format, 0, sizeof(GGLFormat));
}
pixel_t(int r, const GGLFormat* fmt, int f=0)
: reg_t(r, f), format(*fmt) {
}
void setTo(int r, const GGLFormat* fmt, int f=0) {
reg_t::setTo(r, f); format = *fmt;
}
GGLFormat format;
inline int hi(int c) const { return format.c[c].h; }
inline int low(int c) const { return format.c[c].l; }
inline int mask(int c) const { return ((1<<size(c))-1) << low(c); }
inline int size() const { return format.size*8; }
inline int size(int c) const { return component_size(c); }
inline int component_size(int c) const { return hi(c) - low(c); }
};
struct component_t : public reg_t {
component_t() : reg_t(), h(0), l(0) {
}
component_t(int r, int f=0)
: reg_t(r, f), h(0), l(0) {
}
component_t(int r, int lo, int hi, int f=0)
: reg_t(r, f), h(hi), l(lo) {
}
explicit component_t(const integer_t& rhs)
: reg_t(rhs.reg, rhs.flags), h(rhs.s), l(0) {
}
explicit component_t(const pixel_t& rhs, int component) {
setTo( rhs.reg,
rhs.format.c[component].l,
rhs.format.c[component].h,
rhs.flags|CLEAR_LO|CLEAR_HI);
}
void setTo(int r, int lo=0, int hi=0, int f=0) {
reg_t::setTo(r, f); h=hi; l=lo;
}
int8_t h;
int8_t l;
inline int size() const { return h-l; }
};
struct pointer_t : public reg_t {
pointer_t() : reg_t(), size(0) {
}
pointer_t(int r, int s, int f=0)
: reg_t(r, f), size(s) {
}
void setTo(int r, int s, int f=0) {
reg_t::setTo(r, f); size=s;
}
int8_t size;
};
private:
struct tex_coord_t {
reg_t s;
reg_t t;
pointer_t ptr;
};
struct fragment_parts_t {
uint32_t packed : 1;
uint32_t reload : 2;
uint32_t iterated_packed : 1;
pixel_t iterated;
pointer_t cbPtr;
pointer_t covPtr;
reg_t count;
reg_t argb[4];
reg_t argb_dx[4];
reg_t z;
reg_t dither;
pixel_t texel[GGL_TEXTURE_UNIT_COUNT];
tex_coord_t coords[GGL_TEXTURE_UNIT_COUNT];
};
struct texture_unit_t {
int format_idx;
GGLFormat format;
int bits;
int swrap;
int twrap;
int env;
int pot;
int linear;
uint8_t mask;
uint8_t replaced;
};
struct texture_machine_t {
texture_unit_t tmu[GGL_TEXTURE_UNIT_COUNT];
uint8_t mask;
uint8_t replaced;
uint8_t directTexture;
uint8_t activeUnits;
};
struct component_info_t {
bool masked : 1;
bool inDest : 1;
bool needed : 1;
bool replaced : 1;
bool iterated : 1;
bool smooth : 1;
bool blend : 1;
bool fog : 1;
};
struct builder_context_t {
context_t const* c;
needs_t needs;
int Rctx;
};
template <typename T>
void modify(T& r, Scratch& regs)
{
if (!(r.flags & CORRUPTIBLE)) {
r.reg = regs.obtain();
r.flags |= CORRUPTIBLE;
}
}
// helpers
void base_offset(const pointer_t& d, const pointer_t& b, const reg_t& o);
// texture environement
void modulate( component_t& dest,
const component_t& incoming,
const pixel_t& texel, int component);
void decal( component_t& dest,
const component_t& incoming,
const pixel_t& texel, int component);
void blend( component_t& dest,
const component_t& incoming,
const pixel_t& texel, int component, int tmu);
void add( component_t& dest,
const component_t& incoming,
const pixel_t& texel, int component);
// load/store stuff
void store(const pointer_t& addr, const pixel_t& src, uint32_t flags=0);
void load(const pointer_t& addr, const pixel_t& dest, uint32_t flags=0);
void extract(integer_t& d, const pixel_t& s, int component);
void extract(component_t& d, const pixel_t& s, int component);
void extract(integer_t& d, int s, int h, int l, int bits=32);
void expand(integer_t& d, const integer_t& s, int dbits);
void expand(integer_t& d, const component_t& s, int dbits);
void expand(component_t& d, const component_t& s, int dbits);
void downshift(pixel_t& d, int component, component_t s, const reg_t& dither);
void mul_factor( component_t& d,
const integer_t& v,
const integer_t& f);
void mul_factor_add( component_t& d,
const integer_t& v,
const integer_t& f,
const component_t& a);
void component_add( component_t& d,
const integer_t& dst,
const integer_t& src);
void component_sat( const component_t& v);
void build_scanline_prolog( fragment_parts_t& parts,
const needs_t& needs);
void build_smooth_shade(const fragment_parts_t& parts);
void build_component( pixel_t& pixel,
const fragment_parts_t& parts,
int component,
Scratch& global_scratches);
void build_incoming_component(
component_t& temp,
int dst_size,
const fragment_parts_t& parts,
int component,
Scratch& scratches,
Scratch& global_scratches);
void init_iterated_color(fragment_parts_t& parts, const reg_t& x);
void build_iterated_color( component_t& fragment,
const fragment_parts_t& parts,
int component,
Scratch& regs);
void decodeLogicOpNeeds(const needs_t& needs);
void decodeTMUNeeds(const needs_t& needs, context_t const* c);
void init_textures( tex_coord_t* coords,
const reg_t& x,
const reg_t& y);
void build_textures( fragment_parts_t& parts,
Scratch& regs);
void filter8( const fragment_parts_t& parts,
pixel_t& texel, const texture_unit_t& tmu,
int U, int V, pointer_t& txPtr,
int FRAC_BITS);
void filter16( const fragment_parts_t& parts,
pixel_t& texel, const texture_unit_t& tmu,
int U, int V, pointer_t& txPtr,
int FRAC_BITS);
void filter24( const fragment_parts_t& parts,
pixel_t& texel, const texture_unit_t& tmu,
int U, int V, pointer_t& txPtr,
int FRAC_BITS);
void filter32( const fragment_parts_t& parts,
pixel_t& texel, const texture_unit_t& tmu,
int U, int V, pointer_t& txPtr,
int FRAC_BITS);
void build_texture_environment( component_t& fragment,
const fragment_parts_t& parts,
int component,
Scratch& regs);
void wrapping( int d,
int coord, int size,
int tx_wrap, int tx_linear);
void build_fog( component_t& temp,
int component,
Scratch& parent_scratches);
void build_blending( component_t& in_out,
const pixel_t& pixel,
int component,
Scratch& parent_scratches);
void build_blend_factor(
integer_t& factor, int f, int component,
const pixel_t& dst_pixel,
integer_t& fragment,
integer_t& fb,
Scratch& scratches);
void build_blendFOneMinusF( component_t& temp,
const integer_t& factor,
const integer_t& fragment,
const integer_t& fb);
void build_blendOneMinusFF( component_t& temp,
const integer_t& factor,
const integer_t& fragment,
const integer_t& fb);
void build_coverage_application(component_t& fragment,
const fragment_parts_t& parts,
Scratch& regs);
void build_alpha_test(component_t& fragment, const fragment_parts_t& parts);
enum { Z_TEST=1, Z_WRITE=2 };
void build_depth_test(const fragment_parts_t& parts, uint32_t mask);
void build_iterate_z(const fragment_parts_t& parts);
void build_iterate_f(const fragment_parts_t& parts);
void build_iterate_texture_coordinates(const fragment_parts_t& parts);
void build_logic_op(pixel_t& pixel, Scratch& regs);
void build_masking(pixel_t& pixel, Scratch& regs);
void build_and_immediate(int d, int s, uint32_t mask, int bits);
bool isAlphaSourceNeeded() const;
enum {
FACTOR_SRC=1, FACTOR_DST=2, BLEND_SRC=4, BLEND_DST=8
};
enum {
LOGIC_OP=1, LOGIC_OP_SRC=2, LOGIC_OP_DST=4
};
static int blending_codes(int fs, int fd);
builder_context_t mBuilderContext;
texture_machine_t mTextureMachine;
component_info_t mInfo[4];
int mBlending;
int mMasking;
int mAllMasked;
int mLogicOp;
int mAlphaTest;
int mAA;
int mDithering;
int mDepthTest;
int mSmooth;
int mFog;
pixel_t mDstPixel;
GGLFormat mCbFormat;
int mBlendFactorCached;
integer_t mAlphaSource;
int mBaseRegister;
int mBlendSrc;
int mBlendDst;
int mBlendSrcA;
int mBlendDstA;
int mOptLevel;
};
// ----------------------------------------------------------------------------
}; // namespace android
#endif // ANDROID_GGLASSEMBLER_H
|