/
mojoshader.c
4924 lines (4138 loc) · 154 KB
1
/**
2
3
* MojoShader; generate shader programs from bytecode of compiled
* Direct3D shaders.
4
5
6
7
8
9
*
* Please see the file LICENSE.txt in the source's root directory.
*
* This file written by Ryan C. Gordon.
*/
10
11
// !!! FIXME: I keep changing coding styles for symbols and typedefs.
12
13
14
15
// !!! FIXME: do DEF* opcodes have to come before instructions?
// !!! FIXME: my reading of the msdn spec suggests no, but it sounds like
// !!! FIXME: something they'd require. DCL_* _does_ have to be first.
16
17
18
19
// Shader bytecode format is described at MSDN:
// http://msdn2.microsoft.com/en-us/library/ms800307.aspx
20
#include <stdio.h>
21
#include <string.h>
22
#include <stdlib.h>
23
#include <stdarg.h>
24
#include <assert.h>
25
26
#include "mojoshader.h"
27
28
29
30
31
32
33
// This is the highest shader version we currently support.
#define MAX_SHADER_MAJOR 3
#define MAX_SHADER_MINOR 0
34
35
36
// If SUPPORT_PROFILE_* isn't defined, we assume an implicit desire to support.
// You get all the profiles unless you go out of your way to disable them.
37
38
39
40
41
#ifndef SUPPORT_PROFILE_D3D
#define SUPPORT_PROFILE_D3D 1
#endif
42
43
44
45
#ifndef SUPPORT_PROFILE_PASSTHROUGH
#define SUPPORT_PROFILE_PASSTHROUGH 1
#endif
46
47
48
49
#ifndef SUPPORT_PROFILE_GLSL
#define SUPPORT_PROFILE_GLSL 1
#endif
50
51
52
53
// Get basic wankery out of the way here...
typedef unsigned int uint; // this is a printf() helper. don't use for code.
54
55
56
57
58
59
60
61
62
#ifdef _MSC_VER
#define snprintf _snprintf
typedef unsigned __int8 uint8;
typedef unsigned __int32 uint32;
typedef unsigned __int32 int32;
typedef
#else
#include <stdint.h>
63
64
typedef uint8_t uint8;
typedef uint32_t uint32;
65
typedef int32_t int32;
66
#endif
67
68
69
70
71
72
73
#ifdef __GNUC__
#define ISPRINTF(x,y) __attribute__((format (printf, x, y)))
#else
#define ISPRINTF(x,y)
#endif
74
75
#define STATICARRAYLEN(x) ( (sizeof ((x))) / (sizeof ((x)[0])) )
76
77
78
79
80
81
#ifdef _WINDOWS // !!! FIXME: bleh
const char *endline_str = "\r\n";
#else
const char *endline_str = "\n";
#endif
82
83
84
// we need to reference this by explicit value occasionally.
#define OPCODE_RET 28
85
86
87
88
89
// Special-case return values from the parsing pipeline...
#define FAIL (-1)
#define NOFAIL (-2)
#define END_OF_STREAM (-3)
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
// Byteswap magic...
#if ((defined __GNUC__) && (defined __POWERPC__))
static inline uint32 SWAP32(uint32 x)
{
__asm__ __volatile__("lwbrx %0,0,%1" : "=r" (x) : "r" (&x));
return x;
} // SWAP32
#elif defined(__POWERPC__)
static inline uint32 SWAP32(uint32 x)
{
return ( (((x) >> 24) & 0x000000FF) | (((x) >> 8) & 0x0000FF00) |
(((x) << 8) & 0x00FF0000) | (((x) << 24) & 0xFF000000) );
} // SWAP32
#else
# define SWAP32(x) (x)
#endif
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
typedef enum
{
REG_TYPE_TEMP = 0,
REG_TYPE_INPUT = 1,
REG_TYPE_CONST = 2,
REG_TYPE_ADDRESS = 3,
REG_TYPE_TEXTURE = 3, // ALSO 3!
REG_TYPE_RASTOUT = 4,
REG_TYPE_ATTROUT = 5,
REG_TYPE_TEXCRDOUT = 6,
REG_TYPE_OUTPUT = 6, // ALSO 6!
REG_TYPE_CONSTINT = 7,
REG_TYPE_COLOROUT = 8,
REG_TYPE_DEPTHOUT = 9,
REG_TYPE_SAMPLER = 10,
REG_TYPE_CONST2 = 11,
REG_TYPE_CONST3 = 12,
REG_TYPE_CONST4 = 13,
REG_TYPE_CONSTBOOL = 14,
REG_TYPE_LOOP = 15,
REG_TYPE_TEMPFLOAT16 = 16,
REG_TYPE_MISCTYPE = 17,
REG_TYPE_LABEL = 18,
REG_TYPE_PREDICATE = 19,
REG_TYPE_MAX = 19
} RegisterType;
135
136
137
138
139
140
141
142
typedef enum
{
TEXTURE_TYPE_2D = 2,
TEXTURE_TYPE_CUBE = 3,
TEXTURE_TYPE_VOLUME = 4,
} TextureType;
143
// predeclare.
144
typedef struct Context Context;
145
146
// one emit function for each opcode in each profile.
147
typedef void (*emit_function)(Context *ctx);
148
149
// one emit function for starting output in each profile.
150
typedef void (*emit_start)(Context *ctx);
151
152
// one emit function for ending output in each profile.
153
typedef void (*emit_end)(Context *ctx);
154
155
156
157
158
159
160
161
162
163
// one emit function for finalizing output in each profile.
typedef void (*emit_finalize)(Context *ctx);
// one emit function for global definitions in each profile.
typedef void (*emit_global)(Context *ctx, RegisterType regtype, int regnum);
// one emit function for uniforms in each profile.
typedef void (*emit_uniform)(Context *ctx, RegisterType regtype, int regnum);
164
165
166
// one emit function for samplers in each profile.
typedef void (*emit_sampler)(Context *ctx, int stage, TextureType ttype);
167
168
169
170
// one emit function for attributes in each profile.
typedef void (*emit_attribute)(Context *ctx, RegisterType regtype, int regnum,
MOJOSHADER_usage usage, int index, int wmask);
171
172
173
// one args function for each possible sequence of opcode arguments.
typedef int (*args_function)(Context *ctx);
174
// one state function for each opcode where we have state machine updates.
175
typedef void (*state_function)(Context *ctx);
176
177
178
179
180
181
typedef struct
{
const char *name;
emit_start start_emitter;
emit_end end_emitter;
182
183
emit_global global_emitter;
emit_uniform uniform_emitter;
184
emit_sampler sampler_emitter;
185
emit_attribute attribute_emitter;
186
emit_finalize finalize_emitter;
187
} Profile;
188
189
190
191
192
193
194
typedef enum
{
RASTOUT_TYPE_POSITION = 0,
RASTOUT_TYPE_FOG = 1,
RASTOUT_TYPE_POINT_SIZE = 2,
RASTOUT_TYPE_MAX = 2
195
} RastOutType;
196
197
198
199
200
201
typedef enum
{
MISCTYPE_TYPE_POSITION = 0,
MISCTYPE_TYPE_FACE = 1,
MISCTYPE_TYPE_MAX = 1
202
} MiscTypeType;
203
204
205
206
207
// A simple linked list of strings, so we can build the final output without
// realloc()ing for each new line, and easily insert lines into the middle
// of the output without much trouble.
208
typedef struct OutputListNode
209
210
{
char *str;
211
212
213
214
215
216
217
struct OutputListNode *next;
} OutputListNode;
typedef struct OutputList
{
OutputListNode head;
OutputListNode *tail;
218
219
} OutputList;
220
221
222
223
224
typedef struct RegisterList
{
RegisterType regtype;
int regnum;
225
226
227
MOJOSHADER_usage usage;
int index;
int writemask;
228
int misc;
229
230
231
232
struct RegisterList *next;
} RegisterList;
233
234
235
236
237
// result modifiers.
#define MOD_SATURATE 0x01
#define MOD_PP 0x02
#define MOD_CENTROID 0x04
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
// source modifiers.
typedef enum
{
SRCMOD_NONE,
SRCMOD_NEGATE,
SRCMOD_BIAS,
SRCMOD_BIASNEGATE,
SRCMOD_SIGN,
SRCMOD_SIGNNEGATE,
SRCMOD_COMPLEMENT,
SRCMOD_X2,
SRCMOD_X2NEGATE,
SRCMOD_DZ,
SRCMOD_DW,
SRCMOD_ABS,
SRCMOD_ABSNEGATE,
SRCMOD_NOT,
SRCMOD_TOTAL
256
} SourceMod;
257
258
259
260
typedef struct
{
261
const uint32 *token; // this is the unmolested token in the stream.
262
263
int regnum;
int relative;
264
265
266
267
268
int writemask; // xyzw or rgba (all four, not split out).
int writemask0; // x or red
int writemask1; // y or green
int writemask2; // z or blue
int writemask3; // w or alpha
269
270
int result_mod;
int result_shift;
271
RegisterType regtype;
272
273
274
275
} DestArgInfo;
typedef struct
{
276
const uint32 *token; // this is the unmolested token in the stream.
277
int regnum;
278
int swizzle; // xyzw (all four, not split out).
279
280
281
282
int swizzle_x;
int swizzle_y;
int swizzle_z;
int swizzle_w;
283
SourceMod src_mod;
284
RegisterType regtype;
285
286
287
288
int relative;
RegisterType relative_regtype;
int relative_regnum;
int relative_component;
289
290
291
} SourceArgInfo;
292
293
typedef enum
{
294
// Specific to GLSL profile...
295
CTX_FLAGS_GLSL_LIT_OPCODE = (1 << 0),
296
297
298
299
CTX_FLAGS_MASK = 0xFFFFFFFF
} ContextFlags;
300
301
#define SCRATCH_BUFFER_SIZE 128
#define SCRATCH_BUFFERS 16
302
303
// !!! FIXME: the scratch buffers make Context pretty big.
304
305
// !!! FIXME: might be worth having one set of static scratch buffers that
// !!! FIXME: are mutex protected?
306
307
// Context...this is state that changes as we parse through a shader...
308
struct Context
309
{
310
311
MOJOSHADER_malloc malloc;
MOJOSHADER_free free;
312
void *malloc_data;
313
314
const uint32 *tokens;
uint32 tokencount;
315
316
OutputList *output;
OutputList globals;
317
OutputList helpers;
318
OutputList subroutines;
319
OutputList mainline_intro;
320
OutputList mainline;
321
322
OutputList ignore;
OutputList *output_stack[2];
323
uint8 *output_bytes; // can be used instead of the OutputLists.
324
325
int indent_stack[2];
int output_stack_len;
326
int output_len; // total strlen; prevents walking the lists just to malloc.
327
int indent;
328
329
330
const char *endline;
int endline_len;
const char *failstr;
331
char scratch[SCRATCH_BUFFERS][SCRATCH_BUFFER_SIZE];
332
333
int scratchidx; // current scratch buffer.
int profileid;
334
const Profile *profile;
335
MOJOSHADER_shaderType shader_type;
336
337
uint8 major_ver;
uint8 minor_ver;
338
DestArgInfo dest_arg;
339
SourceArgInfo source_args[5];
340
SourceArgInfo predicate_arg; // for predicated instructions.
341
uint32 dwords[4];
342
int instruction_count;
343
uint32 instruction_controls;
344
345
uint32 previous_opcode;
ContextFlags flags;
346
int predicated;
347
int loops;
348
int reps;
349
int cmps;
350
351
RegisterList used_registers;
RegisterList defined_registers;
352
353
int uniform_count;
RegisterList uniforms;
354
355
int attribute_count;
RegisterList attributes;
356
357
int sampler_count;
RegisterList samplers;
358
359
360
};
361
362
// Convenience functions for allocators...
363
364
365
366
367
368
static MOJOSHADER_parseData out_of_mem_data = {
"Out of memory", 0, 0, 0, 0, MOJOSHADER_TYPE_UNKNOWN, 0, 0, 0, 0
};
static const char *out_of_mem_str = "Out of memory";
static inline int out_of_memory(Context *ctx)
369
{
370
371
372
373
374
375
376
377
378
379
380
if (ctx->failstr == NULL)
ctx->failstr = out_of_mem_str; // fail() would call malloc().
return FAIL;
} // out_of_memory
static inline void *Malloc(Context *ctx, const int len)
{
void *retval = ctx->malloc(len, ctx->malloc_data);
if (retval == NULL)
out_of_memory(ctx);
return retval;
381
382
383
} // Malloc
384
static inline void Free(Context *ctx, void *ptr)
385
{
386
if (ptr != NULL) // check for NULL in case of dumb free() impl.
387
ctx->free(ptr, ctx->malloc_data);
388
389
390
} // Free
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
// jump between output sections in the context...
static inline void push_output(Context *ctx, OutputList *section)
{
assert(ctx->output_stack_len < STATICARRAYLEN(ctx->output_stack));
ctx->output_stack[ctx->output_stack_len] = ctx->output;
ctx->indent_stack[ctx->output_stack_len] = ctx->indent;
ctx->output_stack_len++;
ctx->output = section;
ctx->indent = 0;
} // push_output
static inline void pop_output(Context *ctx)
{
assert(ctx->output_stack_len > 0);
ctx->output_stack_len--;
ctx->output = ctx->output_stack[ctx->output_stack_len];
ctx->indent = ctx->indent_stack[ctx->output_stack_len];
} // pop_output
// Shader model version magic...
415
416
417
418
419
static inline uint32 ver_ui32(const uint8 major, const uint8 minor)
{
return ( (((uint32) major) << 16) | (((minor) == 0xFF) ? 0 : (minor)) );
} // version_ui32
420
static inline int shader_version_supported(const uint8 maj, const uint8 min)
421
422
423
424
{
return (ver_ui32(maj,min) <= ver_ui32(MAX_SHADER_MAJOR, MAX_SHADER_MINOR));
} // shader_version_supported
425
426
static inline int shader_version_atleast(const Context *ctx, const uint8 maj,
const uint8 min)
427
428
429
430
{
return (ver_ui32(ctx->major_ver, ctx->minor_ver) >= ver_ui32(maj, min));
} // shader_version_atleast
431
432
433
434
435
436
437
438
439
440
static inline int shader_is_pixel(const Context *ctx)
{
return (ctx->shader_type == MOJOSHADER_TYPE_PIXEL);
} // shader_is_pixel
static inline int shader_is_vertex(const Context *ctx)
{
return (ctx->shader_type == MOJOSHADER_TYPE_VERTEX);
} // shader_is_vertex
441
442
443
// Bit arrays (for storing large arrays of booleans...
444
static inline char *get_scratch_buffer(Context *ctx)
445
{
446
ctx->scratchidx = (ctx->scratchidx + 1) % SCRATCH_BUFFERS;
447
return ctx->scratch[ctx->scratchidx];
448
449
} // get_scratch_buffer
450
451
static inline int isfail(const Context *ctx)
452
453
454
455
456
{
return (ctx->failstr != NULL);
} // isfail
457
458
static int failf(Context *ctx, const char *fmt, ...) ISPRINTF(2,3);
static int failf(Context *ctx, const char *fmt, ...)
459
{
460
461
if (ctx->failstr == NULL) // don't change existing error.
{
462
char *scratch = get_scratch_buffer(ctx);
463
464
va_list ap;
va_start(ap, fmt);
465
const int len = vsnprintf(scratch, SCRATCH_BUFFER_SIZE, fmt, ap);
466
467
va_end(ap);
468
char *failstr = (char *) Malloc(ctx, len + 1);
469
if (failstr != NULL)
470
471
{
// see comments about scratch buffer overflow in output_line().
472
if (len < SCRATCH_BUFFER_SIZE)
473
474
475
476
477
478
479
480
strcpy(failstr, scratch); // copy it over.
else
{
va_start(ap, fmt);
vsnprintf(failstr, len + 1, fmt, ap); // rebuild it.
va_end(ap);
} // else
ctx->failstr = failstr;
481
} // if
482
483
484
485
486
487
} // if
return FAIL;
} // failf
488
static inline int fail(Context *ctx, const char *reason)
489
490
491
492
493
{
return failf(ctx, "%s", reason);
} // fail
494
495
static int output_line(Context *ctx, const char *fmt, ...) ISPRINTF(2,3);
static int output_line(Context *ctx, const char *fmt, ...)
496
{
497
498
OutputListNode *item = NULL;
499
if (isfail(ctx))
500
501
return FAIL; // we failed previously, don't go on...
502
char *scratch = get_scratch_buffer(ctx);
503
504
const int indent = ctx->indent;
505
506
if (indent > 0)
memset(scratch, '\t', indent);
507
508
509
va_list ap;
va_start(ap, fmt);
510
const int len = vsnprintf(scratch+indent, SCRATCH_BUFFER_SIZE-indent, fmt, ap) + indent;
511
512
va_end(ap);
513
item = (OutputListNode *) Malloc(ctx, sizeof (OutputListNode));
514
if (item == NULL)
515
return FAIL;
516
517
item->str = (char *) Malloc(ctx, len + 1);
518
if (item->str == NULL)
519
{
520
Free(ctx, item);
521
return FAIL;
522
523
} // if
524
525
526
// If we overflowed our scratch buffer, that's okay. We were going to
// allocate anyhow...the scratch buffer just lets us avoid a second
// run of vsnprintf().
527
if (len < SCRATCH_BUFFER_SIZE)
528
529
530
strcpy(item->str, scratch); // copy it over.
else
{
531
532
if (indent > 0)
memset(item->str, '\t', indent);
533
va_start(ap, fmt);
534
vsnprintf(item->str+indent, len + 1, fmt, ap); // rebuild it.
535
536
va_end(ap);
} // else
537
538
item->next = NULL;
539
540
541
ctx->output->tail->next = item;
ctx->output->tail = item;
542
ctx->output_len += len + ctx->endline_len;
543
544
545
546
547
return 0;
} // output_line
548
549
550
551
552
553
554
// this is just to stop gcc whining.
static inline int output_blank_line(Context *ctx)
{
return output_line(ctx, "%s", "");
} // output_blank_line
555
// !!! FIXME: this is sort of nasty.
556
557
static void floatstr(Context *ctx, char *buf, size_t bufsize, float f,
int leavedecimal)
558
559
{
const size_t len = snprintf(buf, bufsize, "%f", f);
560
if ((len+2) >= bufsize)
561
562
563
564
565
566
fail(ctx, "BUG: internal buffer is too small");
else
{
char *end = buf + len;
char *ptr = strchr(buf, '.');
if (ptr == NULL)
567
568
569
{
if (leavedecimal)
strcat(buf, ".0");
570
return; // done.
571
} // if
572
573
574
575
576
577
578
579
580
while (--end != ptr)
{
if (*end != '0')
{
end++;
break;
} // if
} // while
581
582
if ((leavedecimal) && (end == ptr))
end += 2;
583
584
585
586
*end = '\0'; // chop extra '0' or all decimal places off.
} // else
} // floatstr
587
588
589
// Deal with register lists... !!! FIXME: I sort of hate this.
590
static void free_reglist(MOJOSHADER_free f, void *d, RegisterList *item)
591
592
593
594
{
while (item != NULL)
{
RegisterList *next = item->next;
595
f(item, d);
596
597
598
599
600
601
602
603
604
item = next;
} // while
} // free_reglist
static inline uint32 reg_to_ui32(const RegisterType regtype, const int regnum)
{
return ( ((uint32) regtype) | (((uint32) regnum) << 16) );
} // reg_to_uint32
605
606
607
static RegisterList *reglist_insert(Context *ctx, RegisterList *prev,
const RegisterType regtype,
const int regnum)
608
609
610
611
612
613
614
{
const uint32 newval = reg_to_ui32(regtype, regnum);
RegisterList *item = prev->next;
while (item != NULL)
{
const uint32 val = reg_to_ui32(item->regtype, item->regnum);
if (newval == val)
615
return item; // already set, so we're done.
616
617
618
619
620
621
622
623
624
625
626
else if (newval < val) // insert it here.
break;
else // if (newval > val)
{
// keep going, we're not to the insertion point yet.
prev = item;
item = item->next;
} // else
} // while
// we need to insert an entry after (prev).
627
item = (RegisterList *) Malloc(ctx, sizeof (RegisterList));
628
if (item != NULL)
629
630
631
{
item->regtype = regtype;
item->regnum = regnum;
632
item->usage = MOJOSHADER_USAGE_UNKNOWN;
633
634
item->index = 0;
item->writemask = 0;
635
item->misc = 0;
636
637
item->next = prev->next;
prev->next = item;
638
} // if
639
640
return item;
641
642
} // reglist_insert
643
644
static RegisterList *reglist_find(RegisterList *prev, const RegisterType rtype,
const int regnum)
645
{
646
647
const uint32 newval = reg_to_ui32(rtype, regnum);
RegisterList *item = prev->next;
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
while (item != NULL)
{
const uint32 val = reg_to_ui32(item->regtype, item->regnum);
if (newval == val)
return item; // here it is.
else if (newval < val) // should have been here if it existed.
return NULL;
else // if (newval > val)
{
// keep going, we're not to the insertion point yet.
prev = item;
item = item->next;
} // else
} // while
return NULL; // wasn't in the list.
664
665
666
667
668
669
670
} // reglist_find
static inline const RegisterList *reglist_exists(RegisterList *prev,
const RegisterType regtype,
const int regnum)
{
return (reglist_find(prev, regtype, regnum));
671
672
673
674
675
676
677
678
679
680
681
682
} // reglist_exists
static inline void set_used_register(Context *ctx, const RegisterType regtype,
const int regnum)
{
reglist_insert(ctx, &ctx->used_registers, regtype, regnum);
} // set_used_register
static inline int get_used_register(Context *ctx, const RegisterType regtype,
const int regnum)
{
return (reglist_exists(&ctx->used_registers, regtype, regnum) != NULL);
683
} // get_used_register
684
685
686
687
688
689
690
691
692
693
694
695
696
static inline void set_defined_register(Context *ctx, const RegisterType rtype,
const int regnum)
{
reglist_insert(ctx, &ctx->defined_registers, rtype, regnum);
} // set_defined_register
static inline int get_defined_register(Context *ctx, const RegisterType rtype,
const int regnum)
{
return (reglist_exists(&ctx->defined_registers, rtype, regnum) != NULL);
} // get_defined_register
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
static const RegisterList *declared_attribute(Context *ctx,
const MOJOSHADER_usage usage,
const int index)
{
const RegisterList *item = ctx->attributes.next;
while (item != NULL)
{
if ((item->usage == usage) && (item->index == index))
return item;
item = item->next;
} // while
return NULL;
} // declared_attribute
712
713
714
715
716
717
718
719
720
721
static void add_attribute_register(Context *ctx, const RegisterType rtype,
const int regnum, const MOJOSHADER_usage usage,
const int index, const int writemask)
{
RegisterList *item = reglist_insert(ctx, &ctx->attributes, rtype, regnum);
item->usage = usage;
item->index = index;
item->writemask = writemask;
} // add_attribute_register
722
723
724
725
726
727
728
static inline void add_sampler(Context *ctx, const RegisterType rtype,
const int regnum, const TextureType ttype)
{
RegisterList *item = reglist_insert(ctx, &ctx->samplers, rtype, regnum);
item->index = (int) ttype;
} // add_sampler
729
730
731
732
733
734
735
736
737
static inline int replicate_swizzle(const int swizzle)
{
return ( (((swizzle >> 0) & 0x3) == ((swizzle >> 2) & 0x3)) &&
(((swizzle >> 2) & 0x3) == ((swizzle >> 4) & 0x3)) &&
(((swizzle >> 4) & 0x3) == ((swizzle >> 6) & 0x3)) );
} // replicate_swizzle
738
739
740
741
742
static inline int vecsize_from_writemask(const int m)
{
return (m & 1) + ((m >> 1) & 1) + ((m >> 2) & 1) + ((m >> 3) & 1);
} // vecsize_from_writemask
743
744
745
// D3D stuff that's used in more than just the d3d profile...
746
747
748
static const char swizzle_channels[] = { 'x', 'y', 'z', 'w' };
749
750
751
752
753
static const char *usagestrs[] = {
"_position", "_blendweight", "_blendindices", "_normal", "_psize",
"_texcoord", "_tangent", "_binormal", "_tessfactor", "_positiont",
"_color", "_fog", "_depth", "_sample"
};
754
755
static const char *get_D3D_register_string(Context *ctx,
756
RegisterType regtype,
757
758
int regnum, char *regnum_str,
size_t regnum_size)
759
{
760
const char *retval = NULL;
761
int has_number = 1;
762
763
switch (regtype)
764
{
765
case REG_TYPE_TEMP:
766
retval = "r";
767
768
break;
769
case REG_TYPE_INPUT:
770
retval = "v";
771
772
break;
773
case REG_TYPE_CONST:
774
775
776
retval = "c";
break;
777
case REG_TYPE_ADDRESS: // (or REG_TYPE_TEXTURE, same value.)
778
retval = shader_is_vertex(ctx) ? "a" : "t";
779
780
break;
781
case REG_TYPE_RASTOUT:
782
switch ((RastOutType) regnum)
783
{
784
785
786
case RASTOUT_TYPE_POSITION: retval = "oPos"; break;
case RASTOUT_TYPE_FOG: retval = "oFog"; break;
case RASTOUT_TYPE_POINT_SIZE: retval = "oPts"; break;
787
} // switch
788
has_number = 0;
789
790
break;
791
case REG_TYPE_ATTROUT:
792
retval = "oD";
793
794
break;
795
case REG_TYPE_OUTPUT: // (or REG_TYPE_TEXCRDOUT, same value.)
796
if (shader_is_vertex(ctx) && shader_version_atleast(ctx, 3, 0))
797
retval = "o";
798
else
799
retval = "oT";
800
801
break;
802
case REG_TYPE_CONSTINT:
803
retval = "i";
804
805
break;
806
case REG_TYPE_COLOROUT:
807
retval = "oC";
808
809
break;
810
case REG_TYPE_DEPTHOUT:
811
retval = "oDepth";
812
has_number = 0;
813
814
break;
815
case REG_TYPE_SAMPLER:
816
retval = "s";
817
818
break;
819
case REG_TYPE_CONSTBOOL:
820
retval = "b";
821
822
break;
823
case REG_TYPE_LOOP:
824
retval = "aL";
825
has_number = 0;
826
827
break;
828
case REG_TYPE_MISCTYPE:
829
switch ((MiscTypeType) regnum)
830
{
831
832
case MISCTYPE_TYPE_POSITION: retval = "vPos"; break;
case MISCTYPE_TYPE_FACE: retval = "vFace"; break;
833
} // switch
834
has_number = 0;
835
836
break;
837
case REG_TYPE_LABEL:
838
retval = "l";
839
840
break;
841
case REG_TYPE_PREDICATE:
842
retval = "p";
843
break;
844
845
846
847
848
849
850
//case REG_TYPE_TEMPFLOAT16: // !!! FIXME: don't know this asm string
default:
fail(ctx, "unknown register type");
retval = "???";
has_number = 0;
break;
851
852
} // switch
853
854
855
856
857
if (has_number)
snprintf(regnum_str, regnum_size, "%u", (uint) regnum);
else
regnum_str[0] = '\0';
858
859
860
861
return retval;
} // get_D3D_register_string
862
863
864
865
866
867
868
869
870
871
static inline const char *get_shader_type_string(Context *ctx)
{
if (shader_is_pixel(ctx))
return "ps";
else if (shader_is_vertex(ctx))
return "vs";
fail(ctx, "Unknown shader type.");
return "";
} // get_shader_type_string
872
873
874
875
876
877
878
879
880
881
#define AT_LEAST_ONE_PROFILE 0
#if !SUPPORT_PROFILE_D3D
#define PROFILE_EMITTER_D3D(op)
#else
#undef AT_LEAST_ONE_PROFILE
#define AT_LEAST_ONE_PROFILE 1
#define PROFILE_EMITTER_D3D(op) emit_D3D_##op,
882
static const char *make_D3D_srcarg_string_in_buf(Context *ctx,
883
884
const SourceArgInfo *arg,
char *buf, size_t buflen)
885
886
887
{
const char *premod_str = "";
const char *postmod_str = "";
888
switch (arg->src_mod)
889
890
891
892
893
894
895
896
897
898
899
{
case SRCMOD_NEGATE:
premod_str = "-";
break;
case SRCMOD_BIASNEGATE:
premod_str = "-";
// fall through.
case SRCMOD_BIAS:
postmod_str = "_bias";
break;
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
case SRCMOD_SIGNNEGATE:
premod_str = "-";
// fall through.
case SRCMOD_SIGN:
postmod_str = "_bx2";
break;
case SRCMOD_COMPLEMENT:
premod_str = "1-";
break;
case SRCMOD_X2NEGATE:
premod_str = "-";
// fall through.
case SRCMOD_X2:
postmod_str = "_x2";
break;
case SRCMOD_DZ:
postmod_str = "_dz";
break;
case SRCMOD_DW:
postmod_str = "_dw";
break;
case SRCMOD_ABSNEGATE:
premod_str = "-";
// fall through.
case SRCMOD_ABS:
postmod_str = "_abs";
break;
case SRCMOD_NOT:
premod_str = "!";
break;
937
938
939
940
case SRCMOD_NONE:
case SRCMOD_TOTAL:
break; // stop compiler whining.
941
942
943
944
} // switch
char regnum_str[16];
945
946
947
const char *regtype_str = get_D3D_register_string(ctx, arg->regtype,
arg->regnum, regnum_str,
sizeof (regnum_str));
948
949
950
951
if (regtype_str == NULL)
{
fail(ctx, "Unknown source register type.");
952
return "";
953
954
} // if
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
const char *rel_lbracket = "";
const char *rel_rbracket = "";
char rel_swizzle[4] = { '\0' };
char rel_regnum_str[16] = { '\0' };
const char *rel_regtype_str = "";
if (arg->relative)
{
rel_swizzle[0] = '.';
rel_swizzle[1] = swizzle_channels[arg->relative_component];
rel_swizzle[2] = '\0';
rel_lbracket = "[";
rel_rbracket = "]";
rel_regtype_str = get_D3D_register_string(ctx, arg->relative_regtype,
arg->relative_regnum,
rel_regnum_str,
sizeof (rel_regnum_str));
if (regtype_str == NULL)
{
fail(ctx, "Unknown relative source register type.");
return "";
} // if
} // if
979
980
char swizzle_str[6];
int i = 0;
981
if (arg->swizzle != 0xE4) // 0xE4 == 11100100 ... 3 2 1 0. No swizzle.
982
983
{
swizzle_str[i++] = '.';
984
985
986
987
swizzle_str[i++] = swizzle_channels[arg->swizzle_x];
swizzle_str[i++] = swizzle_channels[arg->swizzle_y];
swizzle_str[i++] = swizzle_channels[arg->swizzle_z];
swizzle_str[i++] = swizzle_channels[arg->swizzle_w];
988
989
990
991
// .xyzz is the same as .xyz, .z is the same as .zzzz, etc.
while (swizzle_str[i-1] == swizzle_str[i-2])
i--;
992
993
994
995
} // if
swizzle_str[i] = '\0';
assert(i < sizeof (swizzle_str));
996
997
998
999
snprintf(buf, buflen, "%s%s%s%s%s%s%s%s%s%s",
premod_str, regtype_str, regnum_str, postmod_str,
rel_lbracket, rel_regtype_str, rel_regnum_str, rel_swizzle,
rel_rbracket, swizzle_str);
1000
// !!! FIXME: make sure the scratch buffer was large enough.