forked from xemu-project/xemu
-
Notifications
You must be signed in to change notification settings - Fork 1
/
Copy pathpsh.c
1310 lines (1179 loc) · 49.4 KB
/
psh.c
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
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* QEMU Geforce NV2A pixel shader translation
*
* Copyright (c) 2013 espes
* Copyright (c) 2015 Jannik Vogel
* Copyright (c) 2020-2024 Matt Borgerson
*
* Based on:
* Cxbx, PixelShader.cpp
* Copyright (c) 2004 Aaron Robinson <caustik@caustik.com>
* Kingofc <kingofc@freenet.de>
* Xeon, XBD3DPixelShader.cpp
* Copyright (c) 2003 _SF_
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 or
* (at your option) version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <stdint.h>
#include "common.h"
#include "hw/xbox/nv2a/debug.h"
#include "hw/xbox/nv2a/pgraph/psh.h"
#include "psh.h"
/*
* This implements translation of register combiners into glsl
* fragment shaders, but all terminology is in terms of Xbox DirectX
* pixel shaders, since I wanted to be lazy while referencing existing
* work / stealing code.
*
* For some background, see the OpenGL extension:
* https://www.opengl.org/registry/specs/NV/register_combiners.txt
*/
enum PS_TEXTUREMODES
{ // valid in stage 0 1 2 3
PS_TEXTUREMODES_NONE= 0x00L, // * * * *
PS_TEXTUREMODES_PROJECT2D= 0x01L, // * * * *
PS_TEXTUREMODES_PROJECT3D= 0x02L, // * * * *
PS_TEXTUREMODES_CUBEMAP= 0x03L, // * * * *
PS_TEXTUREMODES_PASSTHRU= 0x04L, // * * * *
PS_TEXTUREMODES_CLIPPLANE= 0x05L, // * * * *
PS_TEXTUREMODES_BUMPENVMAP= 0x06L, // - * * *
PS_TEXTUREMODES_BUMPENVMAP_LUM= 0x07L, // - * * *
PS_TEXTUREMODES_BRDF= 0x08L, // - - * *
PS_TEXTUREMODES_DOT_ST= 0x09L, // - - * *
PS_TEXTUREMODES_DOT_ZW= 0x0aL, // - - * *
PS_TEXTUREMODES_DOT_RFLCT_DIFF= 0x0bL, // - - * -
PS_TEXTUREMODES_DOT_RFLCT_SPEC= 0x0cL, // - - - *
PS_TEXTUREMODES_DOT_STR_3D= 0x0dL, // - - - *
PS_TEXTUREMODES_DOT_STR_CUBE= 0x0eL, // - - - *
PS_TEXTUREMODES_DPNDNT_AR= 0x0fL, // - * * *
PS_TEXTUREMODES_DPNDNT_GB= 0x10L, // - * * *
PS_TEXTUREMODES_DOTPRODUCT= 0x11L, // - * * -
PS_TEXTUREMODES_DOT_RFLCT_SPEC_CONST= 0x12L, // - - - *
// 0x13-0x1f reserved
};
enum PS_INPUTMAPPING
{
PS_INPUTMAPPING_UNSIGNED_IDENTITY= 0x00L, // max(0,x) OK for final combiner
PS_INPUTMAPPING_UNSIGNED_INVERT= 0x20L, // 1 - max(0,x) OK for final combiner
PS_INPUTMAPPING_EXPAND_NORMAL= 0x40L, // 2*max(0,x) - 1 invalid for final combiner
PS_INPUTMAPPING_EXPAND_NEGATE= 0x60L, // 1 - 2*max(0,x) invalid for final combiner
PS_INPUTMAPPING_HALFBIAS_NORMAL= 0x80L, // max(0,x) - 1/2 invalid for final combiner
PS_INPUTMAPPING_HALFBIAS_NEGATE= 0xa0L, // 1/2 - max(0,x) invalid for final combiner
PS_INPUTMAPPING_SIGNED_IDENTITY= 0xc0L, // x invalid for final combiner
PS_INPUTMAPPING_SIGNED_NEGATE= 0xe0L, // -x invalid for final combiner
};
enum PS_REGISTER
{
PS_REGISTER_ZERO= 0x00L, // r
PS_REGISTER_DISCARD= 0x00L, // w
PS_REGISTER_C0= 0x01L, // r
PS_REGISTER_C1= 0x02L, // r
PS_REGISTER_FOG= 0x03L, // r
PS_REGISTER_V0= 0x04L, // r/w
PS_REGISTER_V1= 0x05L, // r/w
PS_REGISTER_T0= 0x08L, // r/w
PS_REGISTER_T1= 0x09L, // r/w
PS_REGISTER_T2= 0x0aL, // r/w
PS_REGISTER_T3= 0x0bL, // r/w
PS_REGISTER_R0= 0x0cL, // r/w
PS_REGISTER_R1= 0x0dL, // r/w
PS_REGISTER_V1R0_SUM= 0x0eL, // r
PS_REGISTER_EF_PROD= 0x0fL, // r
PS_REGISTER_ONE= PS_REGISTER_ZERO | PS_INPUTMAPPING_UNSIGNED_INVERT, // OK for final combiner
PS_REGISTER_NEGATIVE_ONE= PS_REGISTER_ZERO | PS_INPUTMAPPING_EXPAND_NORMAL, // invalid for final combiner
PS_REGISTER_ONE_HALF= PS_REGISTER_ZERO | PS_INPUTMAPPING_HALFBIAS_NEGATE, // invalid for final combiner
PS_REGISTER_NEGATIVE_ONE_HALF= PS_REGISTER_ZERO | PS_INPUTMAPPING_HALFBIAS_NORMAL, // invalid for final combiner
};
enum PS_COMBINERCOUNTFLAGS
{
PS_COMBINERCOUNT_MUX_LSB= 0x0000L, // mux on r0.a lsb
PS_COMBINERCOUNT_MUX_MSB= 0x0001L, // mux on r0.a msb
PS_COMBINERCOUNT_SAME_C0= 0x0000L, // c0 same in each stage
PS_COMBINERCOUNT_UNIQUE_C0= 0x0010L, // c0 unique in each stage
PS_COMBINERCOUNT_SAME_C1= 0x0000L, // c1 same in each stage
PS_COMBINERCOUNT_UNIQUE_C1= 0x0100L // c1 unique in each stage
};
enum PS_COMBINEROUTPUT
{
PS_COMBINEROUTPUT_IDENTITY= 0x00L, // y = x
PS_COMBINEROUTPUT_BIAS= 0x08L, // y = x - 0.5
PS_COMBINEROUTPUT_SHIFTLEFT_1= 0x10L, // y = x*2
PS_COMBINEROUTPUT_SHIFTLEFT_1_BIAS= 0x18L, // y = (x - 0.5)*2
PS_COMBINEROUTPUT_SHIFTLEFT_2= 0x20L, // y = x*4
PS_COMBINEROUTPUT_SHIFTRIGHT_1= 0x30L, // y = x/2
PS_COMBINEROUTPUT_AB_BLUE_TO_ALPHA= 0x80L, // RGB only
PS_COMBINEROUTPUT_CD_BLUE_TO_ALPHA= 0x40L, // RGB only
PS_COMBINEROUTPUT_AB_MULTIPLY= 0x00L,
PS_COMBINEROUTPUT_AB_DOT_PRODUCT= 0x02L, // RGB only
PS_COMBINEROUTPUT_CD_MULTIPLY= 0x00L,
PS_COMBINEROUTPUT_CD_DOT_PRODUCT= 0x01L, // RGB only
PS_COMBINEROUTPUT_AB_CD_SUM= 0x00L, // 3rd output is AB+CD
PS_COMBINEROUTPUT_AB_CD_MUX= 0x04L, // 3rd output is MUX(AB,CD) based on R0.a
};
enum PS_CHANNEL
{
PS_CHANNEL_RGB= 0x00, // used as RGB source
PS_CHANNEL_BLUE= 0x00, // used as ALPHA source
PS_CHANNEL_ALPHA= 0x10, // used as RGB or ALPHA source
};
enum PS_FINALCOMBINERSETTING
{
PS_FINALCOMBINERSETTING_CLAMP_SUM= 0x80, // V1+R0 sum clamped to [0,1]
PS_FINALCOMBINERSETTING_COMPLEMENT_V1= 0x40, // unsigned invert mapping
PS_FINALCOMBINERSETTING_COMPLEMENT_R0= 0x20, // unsigned invert mapping
};
enum PS_DOTMAPPING
{ // valid in stage 0 1 2 3
PS_DOTMAPPING_ZERO_TO_ONE= 0x00L, // - * * *
PS_DOTMAPPING_MINUS1_TO_1_D3D= 0x01L, // - * * *
PS_DOTMAPPING_MINUS1_TO_1_GL= 0x02L, // - * * *
PS_DOTMAPPING_MINUS1_TO_1= 0x03L, // - * * *
PS_DOTMAPPING_HILO_1= 0x04L, // - * * *
PS_DOTMAPPING_HILO_HEMISPHERE_D3D= 0x05L, // - * * *
PS_DOTMAPPING_HILO_HEMISPHERE_GL= 0x06L, // - * * *
PS_DOTMAPPING_HILO_HEMISPHERE= 0x07L, // - * * *
};
// Structures to describe the PS definition
struct InputInfo {
int reg, mod, chan;
};
struct InputVarInfo {
struct InputInfo a, b, c, d;
};
struct FCInputInfo {
struct InputInfo a, b, c, d, e, f, g;
bool v1r0_sum, clamp_sum, inv_v1, inv_r0, enabled;
};
struct OutputInfo {
int ab, cd, muxsum, flags, ab_op, cd_op, muxsum_op,
mapping, ab_alphablue, cd_alphablue;
};
struct PSStageInfo {
struct InputVarInfo rgb_input, alpha_input;
struct OutputInfo rgb_output, alpha_output;
int c0, c1;
};
struct PixelShader {
PshState state;
int num_stages, flags;
struct PSStageInfo stage[8];
struct FCInputInfo final_input;
int tex_modes[4], input_tex[4], dot_map[4];
MString *varE, *varF;
MString *code;
int cur_stage;
int num_var_refs;
char var_refs[32][32];
int num_const_refs;
char const_refs[32][32];
};
static void add_var_ref(struct PixelShader *ps, const char *var)
{
int i;
for (i=0; i<ps->num_var_refs; i++) {
if (strcmp((char*)ps->var_refs[i], var) == 0) return;
}
strcpy((char*)ps->var_refs[ps->num_var_refs++], var);
}
static void add_const_ref(struct PixelShader *ps, const char *var)
{
int i;
for (i=0; i<ps->num_const_refs; i++) {
if (strcmp((char*)ps->const_refs[i], var) == 0) return;
}
strcpy((char*)ps->const_refs[ps->num_const_refs++], var);
}
// Get the code for a variable used in the program
static MString* get_var(struct PixelShader *ps, int reg, bool is_dest)
{
switch (reg) {
case PS_REGISTER_DISCARD:
if (is_dest) {
return mstring_from_str("");
} else {
return mstring_from_str("vec4(0.0)");
}
break;
case PS_REGISTER_C0:
if (ps->flags & PS_COMBINERCOUNT_UNIQUE_C0 || ps->cur_stage == 8) {
MString *reg_name = mstring_from_fmt("c0_%d", ps->cur_stage);
add_const_ref(ps, mstring_get_str(reg_name));
return reg_name;
} else { // Same c0
add_const_ref(ps, "c0_0");
return mstring_from_str("c0_0");
}
break;
case PS_REGISTER_C1:
if (ps->flags & PS_COMBINERCOUNT_UNIQUE_C1 || ps->cur_stage == 8) {
MString *reg_name = mstring_from_fmt("c1_%d", ps->cur_stage);
add_const_ref(ps, mstring_get_str(reg_name));
return reg_name;
} else { // Same c1
add_const_ref(ps, "c1_0");
return mstring_from_str("c1_0");
}
break;
case PS_REGISTER_FOG:
return mstring_from_str("pFog");
case PS_REGISTER_V0:
return mstring_from_str("v0");
case PS_REGISTER_V1:
return mstring_from_str("v1");
case PS_REGISTER_T0:
return mstring_from_str("t0");
case PS_REGISTER_T1:
return mstring_from_str("t1");
case PS_REGISTER_T2:
return mstring_from_str("t2");
case PS_REGISTER_T3:
return mstring_from_str("t3");
case PS_REGISTER_R0:
add_var_ref(ps, "r0");
return mstring_from_str("r0");
case PS_REGISTER_R1:
add_var_ref(ps, "r1");
return mstring_from_str("r1");
case PS_REGISTER_V1R0_SUM:
add_var_ref(ps, "r0");
if (ps->final_input.clamp_sum) {
return mstring_from_fmt(
"clamp(vec4(%s.rgb + %s.rgb, 0.0), 0.0, 1.0)",
ps->final_input.inv_v1 ? "(1.0 - v1)" : "v1",
ps->final_input.inv_r0 ? "(1.0 - r0)" : "r0");
} else {
return mstring_from_fmt(
"vec4(%s.rgb + %s.rgb, 0.0)",
ps->final_input.inv_v1 ? "(1.0 - v1)" : "v1",
ps->final_input.inv_r0 ? "(1.0 - r0)" : "r0");
}
case PS_REGISTER_EF_PROD:
return mstring_from_fmt("vec4(%s * %s, 0.0)",
mstring_get_str(ps->varE),
mstring_get_str(ps->varF));
default:
assert(false);
return NULL;
}
}
// Get input variable code
static MString* get_input_var(struct PixelShader *ps, struct InputInfo in, bool is_alpha)
{
MString *reg = get_var(ps, in.reg, false);
if (!is_alpha) {
switch (in.chan) {
case PS_CHANNEL_RGB:
mstring_append(reg, ".rgb");
break;
case PS_CHANNEL_ALPHA:
mstring_append(reg, ".aaa");
break;
default:
assert(false);
break;
}
} else {
switch (in.chan) {
case PS_CHANNEL_BLUE:
mstring_append(reg, ".b");
break;
case PS_CHANNEL_ALPHA:
mstring_append(reg, ".a");
break;
default:
assert(false);
break;
}
}
MString *res;
switch (in.mod) {
case PS_INPUTMAPPING_UNSIGNED_IDENTITY:
res = mstring_from_fmt("max(%s, 0.0)", mstring_get_str(reg));
break;
case PS_INPUTMAPPING_UNSIGNED_INVERT:
res = mstring_from_fmt("(1.0 - clamp(%s, 0.0, 1.0))", mstring_get_str(reg));
break;
case PS_INPUTMAPPING_EXPAND_NORMAL:
res = mstring_from_fmt("(2.0 * max(%s, 0.0) - 1.0)", mstring_get_str(reg));
break;
case PS_INPUTMAPPING_EXPAND_NEGATE:
res = mstring_from_fmt("(-2.0 * max(%s, 0.0) + 1.0)", mstring_get_str(reg));
break;
case PS_INPUTMAPPING_HALFBIAS_NORMAL:
res = mstring_from_fmt("(max(%s, 0.0) - 0.5)", mstring_get_str(reg));
break;
case PS_INPUTMAPPING_HALFBIAS_NEGATE:
res = mstring_from_fmt("(-max(%s, 0.0) + 0.5)", mstring_get_str(reg));
break;
case PS_INPUTMAPPING_SIGNED_IDENTITY:
mstring_ref(reg);
res = reg;
break;
case PS_INPUTMAPPING_SIGNED_NEGATE:
res = mstring_from_fmt("-%s", mstring_get_str(reg));
break;
default:
assert(false);
break;
}
mstring_unref(reg);
return res;
}
// Get code for the output mapping of a stage
static MString* get_output(MString *reg, int mapping)
{
MString *res;
switch (mapping) {
case PS_COMBINEROUTPUT_IDENTITY:
mstring_ref(reg);
res = reg;
break;
case PS_COMBINEROUTPUT_BIAS:
res = mstring_from_fmt("(%s - 0.5)", mstring_get_str(reg));
break;
case PS_COMBINEROUTPUT_SHIFTLEFT_1:
res = mstring_from_fmt("(%s * 2.0)", mstring_get_str(reg));
break;
case PS_COMBINEROUTPUT_SHIFTLEFT_1_BIAS:
res = mstring_from_fmt("((%s - 0.5) * 2.0)", mstring_get_str(reg));
break;
case PS_COMBINEROUTPUT_SHIFTLEFT_2:
res = mstring_from_fmt("(%s * 4.0)", mstring_get_str(reg));
break;
case PS_COMBINEROUTPUT_SHIFTRIGHT_1:
res = mstring_from_fmt("(%s / 2.0)", mstring_get_str(reg));
break;
default:
assert(false);
break;
}
return res;
}
// Add the GLSL code for a stage
static MString* add_stage_code(struct PixelShader *ps,
struct InputVarInfo input,
struct OutputInfo output,
const char *write_mask, bool is_alpha)
{
MString *ret = mstring_new();
MString *a = get_input_var(ps, input.a, is_alpha);
MString *b = get_input_var(ps, input.b, is_alpha);
MString *c = get_input_var(ps, input.c, is_alpha);
MString *d = get_input_var(ps, input.d, is_alpha);
const char *caster = "";
if (strlen(write_mask) == 3) {
caster = "vec3";
}
MString *ab;
if (output.ab_op == PS_COMBINEROUTPUT_AB_DOT_PRODUCT) {
ab = mstring_from_fmt("dot(%s, %s)",
mstring_get_str(a), mstring_get_str(b));
} else {
ab = mstring_from_fmt("(%s * %s)",
mstring_get_str(a), mstring_get_str(b));
}
MString *cd;
if (output.cd_op == PS_COMBINEROUTPUT_CD_DOT_PRODUCT) {
cd = mstring_from_fmt("dot(%s, %s)",
mstring_get_str(c), mstring_get_str(d));
} else {
cd = mstring_from_fmt("(%s * %s)",
mstring_get_str(c), mstring_get_str(d));
}
MString *ab_mapping = get_output(ab, output.mapping);
MString *cd_mapping = get_output(cd, output.mapping);
MString *ab_dest = get_var(ps, output.ab, true);
MString *cd_dest = get_var(ps, output.cd, true);
MString *muxsum_dest = get_var(ps, output.muxsum, true);
bool assign_ab = false;
bool assign_cd = false;
bool assign_muxsum = false;
if (mstring_get_length(ab_dest)) {
mstring_append_fmt(ps->code, "ab.%s = clamp(%s(%s), -1.0, 1.0);\n",
write_mask, caster, mstring_get_str(ab_mapping));
assign_ab = true;
} else {
mstring_unref(ab_dest);
mstring_ref(ab_mapping);
ab_dest = ab_mapping;
}
if (mstring_get_length(cd_dest)) {
mstring_append_fmt(ps->code, "cd.%s = clamp(%s(%s), -1.0, 1.0);\n",
write_mask, caster, mstring_get_str(cd_mapping));
assign_cd = true;
} else {
mstring_unref(cd_dest);
mstring_ref(cd_mapping);
cd_dest = cd_mapping;
}
MString *muxsum;
if (output.muxsum_op == PS_COMBINEROUTPUT_AB_CD_SUM) {
muxsum = mstring_from_fmt("(%s + %s)", mstring_get_str(ab),
mstring_get_str(cd));
} else {
muxsum = mstring_from_fmt("((%s) ? %s(%s) : %s(%s))",
(ps->flags & PS_COMBINERCOUNT_MUX_MSB) ?
"r0.a >= 0.5" :
"(uint(r0.a * 255.0) & 1u) == 1u",
caster, mstring_get_str(cd), caster,
mstring_get_str(ab));
}
MString *muxsum_mapping = get_output(muxsum, output.mapping);
if (mstring_get_length(muxsum_dest)) {
mstring_append_fmt(ps->code, "mux_sum.%s = clamp(%s(%s), -1.0, 1.0);\n",
write_mask, caster, mstring_get_str(muxsum_mapping));
assign_muxsum = true;
}
if (assign_ab) {
mstring_append_fmt(ret, "%s.%s = ab.%s;\n",
mstring_get_str(ab_dest), write_mask, write_mask);
if (!is_alpha && output.flags & PS_COMBINEROUTPUT_AB_BLUE_TO_ALPHA) {
mstring_append_fmt(ret, "%s.a = ab.b;\n",
mstring_get_str(ab_dest));
}
}
if (assign_cd) {
mstring_append_fmt(ret, "%s.%s = cd.%s;\n",
mstring_get_str(cd_dest), write_mask, write_mask);
if (!is_alpha && output.flags & PS_COMBINEROUTPUT_CD_BLUE_TO_ALPHA) {
mstring_append_fmt(ret, "%s.a = cd.b;\n",
mstring_get_str(cd_dest));
}
}
if (assign_muxsum) {
mstring_append_fmt(ret, "%s.%s = mux_sum.%s;\n",
mstring_get_str(muxsum_dest), write_mask, write_mask);
}
mstring_unref(a);
mstring_unref(b);
mstring_unref(c);
mstring_unref(d);
mstring_unref(ab);
mstring_unref(cd);
mstring_unref(ab_mapping);
mstring_unref(cd_mapping);
mstring_unref(ab_dest);
mstring_unref(cd_dest);
mstring_unref(muxsum_dest);
mstring_unref(muxsum);
mstring_unref(muxsum_mapping);
return ret;
}
// Add code for the final combiner stage
static void add_final_stage_code(struct PixelShader *ps, struct FCInputInfo final)
{
ps->varE = get_input_var(ps, final.e, false);
ps->varF = get_input_var(ps, final.f, false);
MString *a = get_input_var(ps, final.a, false);
MString *b = get_input_var(ps, final.b, false);
MString *c = get_input_var(ps, final.c, false);
MString *d = get_input_var(ps, final.d, false);
MString *g = get_input_var(ps, final.g, true);
mstring_append_fmt(ps->code, "fragColor.rgb = %s + mix(vec3(%s), vec3(%s), vec3(%s));\n",
mstring_get_str(d), mstring_get_str(c),
mstring_get_str(b), mstring_get_str(a));
mstring_append_fmt(ps->code, "fragColor.a = %s;\n", mstring_get_str(g));
mstring_unref(a);
mstring_unref(b);
mstring_unref(c);
mstring_unref(d);
mstring_unref(g);
mstring_unref(ps->varE);
mstring_unref(ps->varF);
ps->varE = ps->varF = NULL;
}
static const char *get_sampler_type(enum PS_TEXTUREMODES mode, const PshState *state, int i)
{
const char *sampler2D = "sampler2D";
const char *sampler3D = "sampler3D";
const char *samplerCube = "samplerCube";
int dim = state->dim_tex[i];
// FIXME: Cleanup
switch (mode) {
default:
case PS_TEXTUREMODES_NONE:
return NULL;
case PS_TEXTUREMODES_PROJECT2D:
assert(state->dim_tex[i] == 2);
if (state->tex_x8y24[i] && state->vulkan) {
return "usampler2D";
}
return sampler2D;
case PS_TEXTUREMODES_BUMPENVMAP:
case PS_TEXTUREMODES_BUMPENVMAP_LUM:
case PS_TEXTUREMODES_DOT_ST:
if (state->shadow_map[i]) {
fprintf(stderr, "Shadow map support not implemented for mode %d\n", mode);
assert(!"Shadow map support not implemented for this mode");
}
if (state->dim_tex[i] == 2) return sampler2D;
if (state->dim_tex[i] == 3 && mode != PS_TEXTUREMODES_DOT_ST) return sampler3D;
assert(!"Unhandled texture dimensions");
return NULL;
case PS_TEXTUREMODES_PROJECT3D:
case PS_TEXTUREMODES_DOT_STR_3D:
if (state->tex_x8y24[i] && state->vulkan) {
return "usampler2D";
}
if (state->shadow_map[i]) {
return sampler2D;
}
return dim == 2 ? sampler2D : sampler3D;
case PS_TEXTUREMODES_CUBEMAP:
case PS_TEXTUREMODES_DOT_RFLCT_DIFF:
case PS_TEXTUREMODES_DOT_RFLCT_SPEC:
case PS_TEXTUREMODES_DOT_STR_CUBE:
if (state->shadow_map[i]) {
fprintf(stderr, "Shadow map support not implemented for mode %d\n", mode);
assert(!"Shadow map support not implemented for this mode");
}
assert(state->dim_tex[i] == 2);
return samplerCube;
case PS_TEXTUREMODES_DPNDNT_AR:
case PS_TEXTUREMODES_DPNDNT_GB:
if (state->shadow_map[i]) {
fprintf(stderr, "Shadow map support not implemented for mode %d\n", mode);
assert(!"Shadow map support not implemented for this mode");
}
assert(state->dim_tex[i] == 2);
return sampler2D;
}
}
static const char *shadow_comparison_map[] = {
[SHADOW_DEPTH_FUNC_LESS] = "<",
[SHADOW_DEPTH_FUNC_EQUAL] = "==",
[SHADOW_DEPTH_FUNC_LEQUAL] = "<=",
[SHADOW_DEPTH_FUNC_GREATER] = ">",
[SHADOW_DEPTH_FUNC_NOTEQUAL] = "!=",
[SHADOW_DEPTH_FUNC_GEQUAL] = ">=",
};
static void psh_append_shadowmap(const struct PixelShader *ps, int i, bool compare_z, MString *vars)
{
if (ps->state.shadow_depth_func == SHADOW_DEPTH_FUNC_NEVER) {
mstring_append_fmt(vars, "vec4 t%d = vec4(0.0);\n", i);
return;
}
if (ps->state.shadow_depth_func == SHADOW_DEPTH_FUNC_ALWAYS) {
mstring_append_fmt(vars, "vec4 t%d = vec4(1.0);\n", i);
return;
}
g_autofree gchar *normalize_tex_coords = g_strdup_printf("norm%d", i);
const char *tex_remap = ps->state.rect_tex[i] ? normalize_tex_coords : "";
const char *comparison = shadow_comparison_map[ps->state.shadow_depth_func];
bool extract_msb_24b = ps->state.tex_x8y24[i] && ps->state.vulkan;
mstring_append_fmt(
vars, "%svec4 t%d_depth%s = textureProj(texSamp%d, %s(pT%d.xyw));\n",
extract_msb_24b ? "u" : "", i, extract_msb_24b ? "_raw" : "", i,
tex_remap, i);
if (extract_msb_24b) {
mstring_append_fmt(vars,
"vec4 t%d_depth = vec4(float(t%d_depth_raw.x >> 8) "
"/ 0xFFFFFF, 1.0, 0.0, 0.0);\n",
i, i);
}
// Depth.y != 0 indicates 24 bit; depth.z != 0 indicates float.
if (compare_z) {
mstring_append_fmt(
vars,
"float t%d_max_depth;\n"
"if (t%d_depth.y > 0) {\n"
" t%d_max_depth = 0xFFFFFF;\n"
"} else {\n"
" t%d_max_depth = t%d_depth.z > 0 ? 511.9375 : 0xFFFF;\n"
"}\n"
"t%d_depth.x *= t%d_max_depth;\n"
"pT%d.z = clamp(pT%d.z / pT%d.w, 0, t%d_max_depth);\n"
"vec4 t%d = vec4(t%d_depth.x %s pT%d.z ? 1.0 : 0.0);\n",
i, i, i, i, i,
i, i, i, i, i, i,
i, i, comparison, i);
} else {
mstring_append_fmt(
vars,
"vec4 t%d = vec4(t%d_depth.x %s 0.0 ? 1.0 : 0.0);\n",
i, i, comparison);
}
}
// Adjust the s, t coordinates in the given VAR to account for the 4 texel
// border supported by the hardware.
static void apply_border_adjustment(const struct PixelShader *ps, MString *vars, int tex_index, const char *var_template)
{
int i = tex_index;
if (ps->state.border_logical_size[i][0] == 0.0f) {
return;
}
char var_name[32] = {0};
snprintf(var_name, sizeof(var_name), var_template, i);
mstring_append_fmt(
vars,
"vec3 t%dLogicalSize = vec3(%f, %f, %f);\n"
"%s.xyz = (%s.xyz * t%dLogicalSize + vec3(4, 4, 4)) * vec3(%f, %f, %f);\n",
i, ps->state.border_logical_size[i][0], ps->state.border_logical_size[i][1], ps->state.border_logical_size[i][2],
var_name, var_name, i, ps->state.border_inv_real_size[i][0], ps->state.border_inv_real_size[i][1], ps->state.border_inv_real_size[i][2]);
}
static void apply_convolution_filter(const struct PixelShader *ps, MString *vars, int tex)
{
// FIXME: Quincunx
g_autofree gchar *normalize_tex_coords = g_strdup_printf("norm%d", tex);
const char *tex_remap = ps->state.rect_tex[tex] ? normalize_tex_coords : "";
mstring_append_fmt(vars,
"vec4 t%d = vec4(0.0);\n"
"for (int i = 0; i < 9; i++) {\n"
" vec3 texCoordDelta = vec3(convolution3x3[i], 0);\n"
" texCoordDelta.xy /= textureSize(texSamp%d, 0);\n"
" t%d += textureProj(texSamp%d, %s(pT%d.xyw) + texCoordDelta) * gaussian3x3[i];\n"
"}\n", tex, tex, tex, tex, tex_remap, tex);
}
static MString* psh_convert(struct PixelShader *ps)
{
const char *u = ps->state.vulkan ? "" : "uniform "; // FIXME: Remove
MString *preflight = mstring_new();
pgraph_get_glsl_vtx_header(preflight, ps->state.vulkan,
ps->state.smooth_shading, true, false, false);
if (ps->state.vulkan) {
mstring_append_fmt(preflight,
"layout(location = 0) out vec4 fragColor;\n"
"layout(binding = %d, std140) uniform PshUniforms {\n", PSH_UBO_BINDING);
} else {
mstring_append_fmt(preflight,
"layout(location = 0) out vec4 fragColor;\n");
}
mstring_append_fmt(preflight, "%sint alphaRef;\n"
"%svec4 fogColor;\n"
"%sivec4 clipRegion[8];\n",
u, u, u);
for (int i = 0; i < 4; i++) {
mstring_append_fmt(preflight, "%smat2 bumpMat%d;\n"
"%sfloat bumpScale%d;\n"
"%sfloat bumpOffset%d;\n"
"%sfloat texScale%d;\n",
u, i, u, i, u, i, u, i);
}
for (int i = 0; i < 9; i++) {
for (int j = 0; j < 2; j++) {
mstring_append_fmt(preflight, "%svec4 c%d_%d;\n", u, j, i);
}
}
if (ps->state.vulkan) {
mstring_append(preflight, "};\n");
}
const char *dotmap_funcs[] = {
"dotmap_zero_to_one",
"dotmap_minus1_to_1_d3d",
"dotmap_minus1_to_1_gl",
"dotmap_minus1_to_1",
"dotmap_hilo_1",
"dotmap_hilo_hemisphere_d3d",
"dotmap_hilo_hemisphere_gl",
"dotmap_hilo_hemisphere",
};
mstring_append_fmt(preflight,
"float sign1(float x) {\n"
" x *= 255.0;\n"
" return (x-128.0)/127.0;\n"
"}\n"
"float sign2(float x) {\n"
" x *= 255.0;\n"
" if (x >= 128.0) return (x-255.5)/127.5;\n"
" else return (x+0.5)/127.5;\n"
"}\n"
"float sign3(float x) {\n"
" x *= 255.0;\n"
" if (x >= 128.0) return (x-256.0)/127.0;\n"
" else return (x)/127.0;\n"
"}\n"
"float sign3_to_0_to_1(float x) {\n"
" if (x >= 0) return x/2;\n"
" else return 1+x/2;\n"
"}\n"
"vec3 dotmap_zero_to_one(vec4 col) {\n"
" return col.rgb;\n"
"}\n"
"vec3 dotmap_minus1_to_1_d3d(vec4 col) {\n"
" return vec3(sign1(col.r),sign1(col.g),sign1(col.b));\n"
"}\n"
"vec3 dotmap_minus1_to_1_gl(vec4 col) {\n"
" return vec3(sign2(col.r),sign2(col.g),sign2(col.b));\n"
"}\n"
"vec3 dotmap_minus1_to_1(vec4 col) {\n"
" return vec3(sign3(col.r),sign3(col.g),sign3(col.b));\n"
"}\n"
"vec3 dotmap_hilo_1(vec4 col) {\n"
" uint hi_i = uint(col.a * float(0xff)) << 8\n"
" | uint(col.r * float(0xff));\n"
" uint lo_i = uint(col.g * float(0xff)) << 8\n"
" | uint(col.b * float(0xff));\n"
" float hi_f = float(hi_i) / float(0xffff);\n"
" float lo_f = float(lo_i) / float(0xffff);\n"
" return vec3(hi_f, lo_f, 1.0);\n"
"}\n"
"vec3 dotmap_hilo_hemisphere_d3d(vec4 col) {\n"
" return col.rgb;\n" // FIXME
"}\n"
"vec3 dotmap_hilo_hemisphere_gl(vec4 col) {\n"
" return col.rgb;\n" // FIXME
"}\n"
"vec3 dotmap_hilo_hemisphere(vec4 col) {\n"
" return col.rgb;\n" // FIXME
"}\n"
"const float[9] gaussian3x3 = float[9](\n"
" 1.0/16.0, 2.0/16.0, 1.0/16.0,\n"
" 2.0/16.0, 4.0/16.0, 2.0/16.0,\n"
" 1.0/16.0, 2.0/16.0, 1.0/16.0);\n"
"const vec2[9] convolution3x3 = vec2[9](\n"
" vec2(-1.0,-1.0),vec2(0.0,-1.0),vec2(1.0,-1.0),\n"
" vec2(-1.0, 0.0),vec2(0.0, 0.0),vec2(1.0, 0.0),\n"
" vec2(-1.0, 1.0),vec2(0.0, 1.0),vec2(1.0, 1.0));\n"
);
/* Window Clipping */
MString *clip = mstring_new();
mstring_append_fmt(clip, "/* Window-clip (%slusive) */\n",
ps->state.window_clip_exclusive ? "Exc" : "Inc");
if (!ps->state.window_clip_exclusive) {
mstring_append(clip, "bool clipContained = false;\n");
}
mstring_append(clip, "vec2 coord = gl_FragCoord.xy - 0.5;\n"
"for (int i = 0; i < 8; i++) {\n"
" bool outside = any(bvec4(\n"
" lessThan(coord, vec2(clipRegion[i].xy)),\n"
" greaterThanEqual(coord, vec2(clipRegion[i].zw))));\n"
" if (!outside) {\n");
if (ps->state.window_clip_exclusive) {
mstring_append(clip, " discard;\n");
} else {
mstring_append(clip, " clipContained = true;\n"
" break;\n");
}
mstring_append(clip, " }\n"
"}\n");
if (!ps->state.window_clip_exclusive) {
mstring_append(clip, "if (!clipContained) {\n"
" discard;\n"
"}\n");
}
/* calculate perspective-correct inputs */
MString *vars = mstring_new();
if (ps->state.smooth_shading) {
mstring_append(vars, "vec4 pD0 = vtxD0 / vtx_inv_w;\n");
mstring_append(vars, "vec4 pD1 = vtxD1 / vtx_inv_w;\n");
mstring_append(vars, "vec4 pB0 = vtxB0 / vtx_inv_w;\n");
mstring_append(vars, "vec4 pB1 = vtxB1 / vtx_inv_w;\n");
} else {
mstring_append(vars, "vec4 pD0 = vtxD0 / vtx_inv_w_flat;\n");
mstring_append(vars, "vec4 pD1 = vtxD1 / vtx_inv_w_flat;\n");
mstring_append(vars, "vec4 pB0 = vtxB0 / vtx_inv_w_flat;\n");
mstring_append(vars, "vec4 pB1 = vtxB1 / vtx_inv_w_flat;\n");
}
mstring_append(vars, "vec4 pFog = vec4(fogColor.rgb, clamp(vtxFog / vtx_inv_w, 0.0, 1.0));\n");
mstring_append(vars, "vec4 pT0 = vtxT0 / vtx_inv_w;\n");
mstring_append(vars, "vec4 pT1 = vtxT1 / vtx_inv_w;\n");
mstring_append(vars, "vec4 pT2 = vtxT2 / vtx_inv_w;\n");
if (ps->state.point_sprite) {
assert(!ps->state.rect_tex[3]);
mstring_append(vars, "vec4 pT3 = vec4(gl_PointCoord, 1.0, 1.0);\n");
} else {
mstring_append(vars, "vec4 pT3 = vtxT3 / vtx_inv_w;\n");
}
mstring_append(vars, "\n");
mstring_append(vars, "vec4 v0 = pD0;\n");
mstring_append(vars, "vec4 v1 = pD1;\n");
mstring_append(vars, "vec4 ab;\n");
mstring_append(vars, "vec4 cd;\n");
mstring_append(vars, "vec4 mux_sum;\n");
ps->code = mstring_new();
for (int i = 0; i < 4; i++) {
const char *sampler_type = get_sampler_type(ps->tex_modes[i], &ps->state, i);
g_autofree gchar *normalize_tex_coords = g_strdup_printf("norm%d", i);
const char *tex_remap = ps->state.rect_tex[i] ? normalize_tex_coords : "";
assert(ps->dot_map[i] < 8);
const char *dotmap_func = dotmap_funcs[ps->dot_map[i]];
if (ps->dot_map[i] > 3) {
NV2A_UNIMPLEMENTED("Dot Mapping mode %s", dotmap_func);
}
switch (ps->tex_modes[i]) {
case PS_TEXTUREMODES_NONE:
mstring_append_fmt(vars, "vec4 t%d = vec4(0.0); /* PS_TEXTUREMODES_NONE */\n",
i);
break;
case PS_TEXTUREMODES_PROJECT2D: {
if (ps->state.shadow_map[i]) {
psh_append_shadowmap(ps, i, false, vars);
} else {
apply_border_adjustment(ps, vars, i, "pT%d");
if (((ps->state.conv_tex[i] == CONVOLUTION_FILTER_GAUSSIAN) ||
(ps->state.conv_tex[i] == CONVOLUTION_FILTER_QUINCUNX))) {
apply_convolution_filter(ps, vars, i);
} else {
mstring_append_fmt(vars, "vec4 t%d = textureProj(texSamp%d, %s(pT%d.xyw));\n",
i, i, tex_remap, i);
}
}
break;
}
case PS_TEXTUREMODES_PROJECT3D:
if (ps->state.shadow_map[i]) {
psh_append_shadowmap(ps, i, true, vars);
} else {
apply_border_adjustment(ps, vars, i, "pT%d");
mstring_append_fmt(vars, "vec4 t%d = textureProj(texSamp%d, %s(pT%d.xyzw));\n",
i, i, tex_remap, i);
}
break;
case PS_TEXTUREMODES_CUBEMAP:
mstring_append_fmt(vars, "vec4 t%d = texture(texSamp%d, pT%d.xyz / pT%d.w);\n",
i, i, i, i);
break;
case PS_TEXTUREMODES_PASSTHRU:
assert(ps->state.border_logical_size[i][0] == 0.0f && "Unexpected border texture on passthru");
mstring_append_fmt(vars, "vec4 t%d = pT%d;\n", i, i);
break;
case PS_TEXTUREMODES_CLIPPLANE: {
int j;
mstring_append_fmt(vars, "vec4 t%d = vec4(0.0); /* PS_TEXTUREMODES_CLIPPLANE */\n",
i);
for (j = 0; j < 4; j++) {
mstring_append_fmt(vars, " if(pT%d.%c %s 0.0) { discard; };\n",
i, "xyzw"[j],
ps->state.compare_mode[i][j] ? ">=" : "<");
}
break;
}
case PS_TEXTUREMODES_BUMPENVMAP:
assert(i >= 1);
if (ps->state.snorm_tex[ps->input_tex[i]]) {
/* Input color channels already signed (FIXME: May not always want signed textures in this case) */
mstring_append_fmt(vars, "vec2 dsdt%d = t%d.bg;\n",
i, ps->input_tex[i]);
} else {
/* Convert to signed (FIXME: loss of accuracy due to filtering/interpolation) */
mstring_append_fmt(vars, "vec2 dsdt%d = vec2(sign3(t%d.b), sign3(t%d.g));\n",
i, ps->input_tex[i], ps->input_tex[i]);
}
mstring_append_fmt(vars, "dsdt%d = bumpMat%d * dsdt%d;\n", i, i, i);
if (ps->state.dim_tex[i] == 2) {
mstring_append_fmt(vars, "vec4 t%d = texture(texSamp%d, %s(pT%d.xy + dsdt%d));\n",
i, i, tex_remap, i, i);
} else if (ps->state.dim_tex[i] == 3) {
// FIXME: Does hardware pass through the r/z coordinate or is it 0?
mstring_append_fmt(vars, "vec4 t%d = texture(texSamp%d, vec3(pT%d.xy + dsdt%d, pT%d.z));\n",
i, i, i, i, i);
} else {
assert(!"Unhandled texture dimensions");
}
break;
case PS_TEXTUREMODES_BUMPENVMAP_LUM:
assert(i >= 1);
if (ps->state.snorm_tex[ps->input_tex[i]]) {
/* Input color channels already signed (FIXME: May not always want signed textures in this case) */
mstring_append_fmt(vars, "vec3 dsdtl%d = vec3(t%d.bg, sign3_to_0_to_1(t%d.r));\n",
i, ps->input_tex[i], ps->input_tex[i]);
} else {
/* Convert to signed (FIXME: loss of accuracy due to filtering/interpolation) */
mstring_append_fmt(vars, "vec3 dsdtl%d = vec3(sign3(t%d.b), sign3(t%d.g), t%d.r);\n",
i, ps->input_tex[i], ps->input_tex[i], ps->input_tex[i]);
}
mstring_append_fmt(vars, "dsdtl%d.st = bumpMat%d * dsdtl%d.st;\n",
i, i, i);
if (ps->state.dim_tex[i] == 2) {
mstring_append_fmt(vars, "vec4 t%d = texture(texSamp%d, %s(pT%d.xy + dsdtl%d.st));\n",