1 /*
2 * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
3 *
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining
7 * a copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sublicense, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial
16 * portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
21 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
22 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 */
27
28 #include "r500_fragprog.h"
29
30 #include <stdio.h>
31
32 #include "radeon_compiler_util.h"
33 #include "radeon_list.h"
34 #include "radeon_variable.h"
35 #include "r300_reg.h"
36
37 /**
38 * Rewrite IF instructions to use the ALU result special register.
39 */
r500_transform_IF(struct radeon_compiler * c,struct rc_instruction * inst_if,void * data)40 int r500_transform_IF(
41 struct radeon_compiler * c,
42 struct rc_instruction * inst_if,
43 void *data)
44 {
45 struct rc_variable * writer;
46 struct rc_list * writer_list, * list_ptr;
47 struct rc_list * var_list = rc_get_variables(c);
48 unsigned int generic_if = 0;
49 unsigned int alu_chan;
50
51 if (inst_if->U.I.Opcode != RC_OPCODE_IF) {
52 return 0;
53 }
54
55 writer_list = rc_variable_list_get_writers(
56 var_list, inst_if->Type, &inst_if->U.I.SrcReg[0]);
57 if (!writer_list) {
58 generic_if = 1;
59 } else {
60
61 /* Make sure it is safe for the writers to write to
62 * ALU Result */
63 for (list_ptr = writer_list; list_ptr;
64 list_ptr = list_ptr->Next) {
65 struct rc_instruction * inst;
66 writer = list_ptr->Item;
67 /* We are going to modify the destination register
68 * of writer, so if it has a reader other than
69 * inst_if (aka ReaderCount > 1) we must fall back to
70 * our generic IF.
71 * If the writer has a lower IP than inst_if, this
72 * means that inst_if is above the writer in a loop.
73 * I'm not sure why this would ever happen, but
74 * if it does we want to make sure we fall back
75 * to our generic IF. */
76 if (writer->ReaderCount > 1 || writer->Inst->IP < inst_if->IP) {
77 generic_if = 1;
78 break;
79 }
80
81 /* The ALU Result is not preserved across IF
82 * instructions, so if there is another IF
83 * instruction between writer and inst_if, then
84 * we need to fall back to generic IF. */
85 for (inst = writer->Inst; inst != inst_if; inst = inst->Next) {
86 const struct rc_opcode_info * info =
87 rc_get_opcode_info(inst->U.I.Opcode);
88 if (info->IsFlowControl) {
89 generic_if = 1;
90 break;
91 }
92 }
93 if (generic_if) {
94 break;
95 }
96 }
97 }
98
99 if (GET_SWZ(inst_if->U.I.SrcReg[0].Swizzle, 0) == RC_SWIZZLE_X) {
100 alu_chan = RC_ALURESULT_X;
101 } else {
102 alu_chan = RC_ALURESULT_W;
103 }
104 if (generic_if) {
105 struct rc_instruction * inst_mov =
106 rc_insert_new_instruction(c, inst_if->Prev);
107
108 inst_mov->U.I.Opcode = RC_OPCODE_MOV;
109 inst_mov->U.I.DstReg.WriteMask = 0;
110 inst_mov->U.I.DstReg.File = RC_FILE_NONE;
111 inst_mov->U.I.ALUResultCompare = RC_COMPARE_FUNC_NOTEQUAL;
112 inst_mov->U.I.WriteALUResult = alu_chan;
113 inst_mov->U.I.SrcReg[0] = inst_if->U.I.SrcReg[0];
114 if (alu_chan == RC_ALURESULT_X) {
115 inst_mov->U.I.SrcReg[0].Swizzle = combine_swizzles4(
116 inst_mov->U.I.SrcReg[0].Swizzle,
117 RC_SWIZZLE_X, RC_SWIZZLE_UNUSED,
118 RC_SWIZZLE_UNUSED, RC_SWIZZLE_UNUSED);
119 } else {
120 inst_mov->U.I.SrcReg[0].Swizzle = combine_swizzles4(
121 inst_mov->U.I.SrcReg[0].Swizzle,
122 RC_SWIZZLE_UNUSED, RC_SWIZZLE_UNUSED,
123 RC_SWIZZLE_UNUSED, RC_SWIZZLE_Z);
124 }
125 } else {
126 rc_compare_func compare_func = RC_COMPARE_FUNC_NEVER;
127 unsigned int reverse_srcs = 0;
128 unsigned int preserve_opcode = 0;
129 for (list_ptr = writer_list; list_ptr;
130 list_ptr = list_ptr->Next) {
131 writer = list_ptr->Item;
132 switch(writer->Inst->U.I.Opcode) {
133 case RC_OPCODE_SEQ:
134 compare_func = RC_COMPARE_FUNC_EQUAL;
135 break;
136 case RC_OPCODE_SNE:
137 compare_func = RC_COMPARE_FUNC_NOTEQUAL;
138 break;
139 case RC_OPCODE_SLE:
140 reverse_srcs = 1;
141 /* Fall through */
142 case RC_OPCODE_SGE:
143 compare_func = RC_COMPARE_FUNC_GEQUAL;
144 break;
145 case RC_OPCODE_SGT:
146 reverse_srcs = 1;
147 /* Fall through */
148 case RC_OPCODE_SLT:
149 compare_func = RC_COMPARE_FUNC_LESS;
150 break;
151 default:
152 compare_func = RC_COMPARE_FUNC_NOTEQUAL;
153 preserve_opcode = 1;
154 break;
155 }
156 if (!preserve_opcode) {
157 writer->Inst->U.I.Opcode = RC_OPCODE_SUB;
158 }
159 writer->Inst->U.I.DstReg.WriteMask = 0;
160 writer->Inst->U.I.DstReg.File = RC_FILE_NONE;
161 writer->Inst->U.I.WriteALUResult = alu_chan;
162 writer->Inst->U.I.ALUResultCompare = compare_func;
163 if (reverse_srcs) {
164 struct rc_src_register temp_src;
165 temp_src = writer->Inst->U.I.SrcReg[0];
166 writer->Inst->U.I.SrcReg[0] =
167 writer->Inst->U.I.SrcReg[1];
168 writer->Inst->U.I.SrcReg[1] = temp_src;
169 }
170 }
171 }
172
173 inst_if->U.I.SrcReg[0].File = RC_FILE_SPECIAL;
174 inst_if->U.I.SrcReg[0].Index = RC_SPECIAL_ALU_RESULT;
175 inst_if->U.I.SrcReg[0].Swizzle = RC_MAKE_SWIZZLE(
176 RC_SWIZZLE_X, RC_SWIZZLE_UNUSED,
177 RC_SWIZZLE_UNUSED, RC_SWIZZLE_UNUSED);
178 inst_if->U.I.SrcReg[0].Negate = 0;
179
180 return 1;
181 }
182
r500_swizzle_is_native(rc_opcode opcode,struct rc_src_register reg)183 static int r500_swizzle_is_native(rc_opcode opcode, struct rc_src_register reg)
184 {
185 unsigned int relevant;
186 int i;
187
188 if (opcode == RC_OPCODE_TEX ||
189 opcode == RC_OPCODE_TXB ||
190 opcode == RC_OPCODE_TXP ||
191 opcode == RC_OPCODE_TXD ||
192 opcode == RC_OPCODE_TXL ||
193 opcode == RC_OPCODE_KIL) {
194 if (reg.Abs)
195 return 0;
196
197 if (opcode == RC_OPCODE_KIL && (reg.Swizzle != RC_SWIZZLE_XYZW || reg.Negate != RC_MASK_NONE))
198 return 0;
199
200 for(i = 0; i < 4; ++i) {
201 unsigned int swz = GET_SWZ(reg.Swizzle, i);
202 if (swz == RC_SWIZZLE_UNUSED) {
203 reg.Negate &= ~(1 << i);
204 continue;
205 }
206 if (swz >= 4)
207 return 0;
208 }
209
210 if (reg.Negate)
211 return 0;
212
213 return 1;
214 } else if (opcode == RC_OPCODE_DDX || opcode == RC_OPCODE_DDY) {
215 /* DDX/MDH and DDY/MDV explicitly ignore incoming swizzles;
216 * if it doesn't fit perfectly into a .xyzw case... */
217 if (reg.Swizzle == RC_SWIZZLE_XYZW && !reg.Abs && !reg.Negate)
218 return 1;
219
220 return 0;
221 } else if (reg.File == RC_FILE_INLINE) {
222 return 1;
223 } else {
224 /* ALU instructions support almost everything */
225 relevant = 0;
226 for(i = 0; i < 3; ++i) {
227 unsigned int swz = GET_SWZ(reg.Swizzle, i);
228 if (swz != RC_SWIZZLE_UNUSED && swz != RC_SWIZZLE_ZERO)
229 relevant |= 1 << i;
230 }
231 if ((reg.Negate & relevant) && ((reg.Negate & relevant) != relevant))
232 return 0;
233
234 return 1;
235 }
236 }
237
238 /**
239 * Split source register access.
240 *
241 * The only thing we *cannot* do in an ALU instruction is per-component
242 * negation.
243 */
r500_swizzle_split(struct rc_src_register src,unsigned int usemask,struct rc_swizzle_split * split)244 static void r500_swizzle_split(struct rc_src_register src, unsigned int usemask,
245 struct rc_swizzle_split * split)
246 {
247 unsigned int negatebase[2] = { 0, 0 };
248 int i;
249
250 for(i = 0; i < 4; ++i) {
251 unsigned int swz = GET_SWZ(src.Swizzle, i);
252 if (swz == RC_SWIZZLE_UNUSED || !GET_BIT(usemask, i))
253 continue;
254 negatebase[GET_BIT(src.Negate, i)] |= 1 << i;
255 }
256
257 split->NumPhases = 0;
258
259 for(i = 0; i <= 1; ++i) {
260 if (!negatebase[i])
261 continue;
262
263 split->Phase[split->NumPhases++] = negatebase[i];
264 }
265 }
266
267 struct rc_swizzle_caps r500_swizzle_caps = {
268 .IsNative = r500_swizzle_is_native,
269 .Split = r500_swizzle_split
270 };
271
toswiz(int swiz_val)272 static char *toswiz(int swiz_val) {
273 switch(swiz_val) {
274 case 0: return "R";
275 case 1: return "G";
276 case 2: return "B";
277 case 3: return "A";
278 case 4: return "0";
279 case 5: return "H";
280 case 6: return "1";
281 case 7: return "U";
282 }
283 return NULL;
284 }
285
toop(int op_val)286 static char *toop(int op_val)
287 {
288 char *str = NULL;
289 switch (op_val) {
290 case 0: str = "MAD"; break;
291 case 1: str = "DP3"; break;
292 case 2: str = "DP4"; break;
293 case 3: str = "D2A"; break;
294 case 4: str = "MIN"; break;
295 case 5: str = "MAX"; break;
296 case 6: str = "Reserved"; break;
297 case 7: str = "CND"; break;
298 case 8: str = "CMP"; break;
299 case 9: str = "FRC"; break;
300 case 10: str = "SOP"; break;
301 case 11: str = "MDH"; break;
302 case 12: str = "MDV"; break;
303 }
304 return str;
305 }
306
to_alpha_op(int op_val)307 static char *to_alpha_op(int op_val)
308 {
309 char *str = NULL;
310 switch (op_val) {
311 case 0: str = "MAD"; break;
312 case 1: str = "DP"; break;
313 case 2: str = "MIN"; break;
314 case 3: str = "MAX"; break;
315 case 4: str = "Reserved"; break;
316 case 5: str = "CND"; break;
317 case 6: str = "CMP"; break;
318 case 7: str = "FRC"; break;
319 case 8: str = "EX2"; break;
320 case 9: str = "LN2"; break;
321 case 10: str = "RCP"; break;
322 case 11: str = "RSQ"; break;
323 case 12: str = "SIN"; break;
324 case 13: str = "COS"; break;
325 case 14: str = "MDH"; break;
326 case 15: str = "MDV"; break;
327 }
328 return str;
329 }
330
to_mask(int val)331 static char *to_mask(int val)
332 {
333 char *str = NULL;
334 switch(val) {
335 case 0: str = "NONE"; break;
336 case 1: str = "R"; break;
337 case 2: str = "G"; break;
338 case 3: str = "RG"; break;
339 case 4: str = "B"; break;
340 case 5: str = "RB"; break;
341 case 6: str = "GB"; break;
342 case 7: str = "RGB"; break;
343 case 8: str = "A"; break;
344 case 9: str = "AR"; break;
345 case 10: str = "AG"; break;
346 case 11: str = "ARG"; break;
347 case 12: str = "AB"; break;
348 case 13: str = "ARB"; break;
349 case 14: str = "AGB"; break;
350 case 15: str = "ARGB"; break;
351 }
352 return str;
353 }
354
to_texop(int val)355 static char *to_texop(int val)
356 {
357 switch(val) {
358 case 0: return "NOP";
359 case 1: return "LD";
360 case 2: return "TEXKILL";
361 case 3: return "PROJ";
362 case 4: return "LODBIAS";
363 case 5: return "LOD";
364 case 6: return "DXDY";
365 }
366 return NULL;
367 }
368
r500FragmentProgramDump(struct radeon_compiler * c,void * user)369 void r500FragmentProgramDump(struct radeon_compiler *c, void *user)
370 {
371 struct r300_fragment_program_compiler *compiler = (struct r300_fragment_program_compiler*)c;
372 struct r500_fragment_program_code *code = &compiler->code->code.r500;
373 int n, i;
374 uint32_t inst;
375 uint32_t inst0;
376 char *str = NULL;
377 fprintf(stderr, "R500 Fragment Program:\n--------\n");
378
379 for (n = 0; n < code->inst_end+1; n++) {
380 inst0 = inst = code->inst[n].inst0;
381 fprintf(stderr,"%d\t0:CMN_INST 0x%08x:", n, inst);
382 switch(inst & 0x3) {
383 case R500_INST_TYPE_ALU: str = "ALU"; break;
384 case R500_INST_TYPE_OUT: str = "OUT"; break;
385 case R500_INST_TYPE_FC: str = "FC"; break;
386 case R500_INST_TYPE_TEX: str = "TEX"; break;
387 }
388 fprintf(stderr,"%s %s %s %s %s ", str,
389 inst & R500_INST_TEX_SEM_WAIT ? "TEX_WAIT" : "",
390 inst & R500_INST_LAST ? "LAST" : "",
391 inst & R500_INST_NOP ? "NOP" : "",
392 inst & R500_INST_ALU_WAIT ? "ALU WAIT" : "");
393 fprintf(stderr,"wmask: %s omask: %s\n", to_mask((inst >> 11) & 0xf),
394 to_mask((inst >> 15) & 0xf));
395
396 switch(inst0 & 0x3) {
397 case R500_INST_TYPE_ALU:
398 case R500_INST_TYPE_OUT:
399 fprintf(stderr,"\t1:RGB_ADDR 0x%08x:", code->inst[n].inst1);
400 inst = code->inst[n].inst1;
401
402 fprintf(stderr,"Addr0: %d%c, Addr1: %d%c, Addr2: %d%c, srcp:%d\n",
403 inst & 0xff, (inst & (1<<8)) ? 'c' : 't',
404 (inst >> 10) & 0xff, (inst & (1<<18)) ? 'c' : 't',
405 (inst >> 20) & 0xff, (inst & (1<<28)) ? 'c' : 't',
406 (inst >> 30));
407
408 fprintf(stderr,"\t2:ALPHA_ADDR 0x%08x:", code->inst[n].inst2);
409 inst = code->inst[n].inst2;
410 fprintf(stderr,"Addr0: %d%c, Addr1: %d%c, Addr2: %d%c, srcp:%d\n",
411 inst & 0xff, (inst & (1<<8)) ? 'c' : 't',
412 (inst >> 10) & 0xff, (inst & (1<<18)) ? 'c' : 't',
413 (inst >> 20) & 0xff, (inst & (1<<28)) ? 'c' : 't',
414 (inst >> 30));
415 fprintf(stderr,"\t3 RGB_INST: 0x%08x:", code->inst[n].inst3);
416 inst = code->inst[n].inst3;
417 fprintf(stderr,"rgb_A_src:%d %s/%s/%s %d rgb_B_src:%d %s/%s/%s %d targ: %d\n",
418 (inst) & 0x3, toswiz((inst >> 2) & 0x7), toswiz((inst >> 5) & 0x7), toswiz((inst >> 8) & 0x7),
419 (inst >> 11) & 0x3,
420 (inst >> 13) & 0x3, toswiz((inst >> 15) & 0x7), toswiz((inst >> 18) & 0x7), toswiz((inst >> 21) & 0x7),
421 (inst >> 24) & 0x3, (inst >> 29) & 0x3);
422
423
424 fprintf(stderr,"\t4 ALPHA_INST:0x%08x:", code->inst[n].inst4);
425 inst = code->inst[n].inst4;
426 fprintf(stderr,"%s dest:%d%s alp_A_src:%d %s %d alp_B_src:%d %s %d targ %d w:%d\n", to_alpha_op(inst & 0xf),
427 (inst >> 4) & 0x7f, inst & (1<<11) ? "(rel)":"",
428 (inst >> 12) & 0x3, toswiz((inst >> 14) & 0x7), (inst >> 17) & 0x3,
429 (inst >> 19) & 0x3, toswiz((inst >> 21) & 0x7), (inst >> 24) & 0x3,
430 (inst >> 29) & 0x3,
431 (inst >> 31) & 0x1);
432
433 fprintf(stderr,"\t5 RGBA_INST: 0x%08x:", code->inst[n].inst5);
434 inst = code->inst[n].inst5;
435 fprintf(stderr,"%s dest:%d%s rgb_C_src:%d %s/%s/%s %d alp_C_src:%d %s %d\n", toop(inst & 0xf),
436 (inst >> 4) & 0x7f, inst & (1<<11) ? "(rel)":"",
437 (inst >> 12) & 0x3, toswiz((inst >> 14) & 0x7), toswiz((inst >> 17) & 0x7), toswiz((inst >> 20) & 0x7),
438 (inst >> 23) & 0x3,
439 (inst >> 25) & 0x3, toswiz((inst >> 27) & 0x7), (inst >> 30) & 0x3);
440 break;
441 case R500_INST_TYPE_FC:
442 fprintf(stderr, "\t2:FC_INST 0x%08x:", code->inst[n].inst2);
443 inst = code->inst[n].inst2;
444 /* JUMP_FUNC JUMP_ANY*/
445 fprintf(stderr, "0x%02x %1x ", inst >> 8 & 0xff,
446 (inst & R500_FC_JUMP_ANY) >> 5);
447
448 /* OP */
449 switch(inst & 0x7){
450 case R500_FC_OP_JUMP:
451 fprintf(stderr, "JUMP");
452 break;
453 case R500_FC_OP_LOOP:
454 fprintf(stderr, "LOOP");
455 break;
456 case R500_FC_OP_ENDLOOP:
457 fprintf(stderr, "ENDLOOP");
458 break;
459 case R500_FC_OP_REP:
460 fprintf(stderr, "REP");
461 break;
462 case R500_FC_OP_ENDREP:
463 fprintf(stderr, "ENDREP");
464 break;
465 case R500_FC_OP_BREAKLOOP:
466 fprintf(stderr, "BREAKLOOP");
467 break;
468 case R500_FC_OP_BREAKREP:
469 fprintf(stderr, "BREAKREP");
470 break;
471 case R500_FC_OP_CONTINUE:
472 fprintf(stderr, "CONTINUE");
473 break;
474 }
475 fprintf(stderr," ");
476 /* A_OP */
477 switch(inst & (0x3 << 6)){
478 case R500_FC_A_OP_NONE:
479 fprintf(stderr, "NONE");
480 break;
481 case R500_FC_A_OP_POP:
482 fprintf(stderr, "POP");
483 break;
484 case R500_FC_A_OP_PUSH:
485 fprintf(stderr, "PUSH");
486 break;
487 }
488 /* B_OP0 B_OP1 */
489 for(i=0; i<2; i++){
490 fprintf(stderr, " ");
491 switch(inst & (0x3 << (24 + (i * 2)))){
492 /* R500_FC_B_OP0_NONE
493 * R500_FC_B_OP1_NONE */
494 case 0:
495 fprintf(stderr, "NONE");
496 break;
497 case R500_FC_B_OP0_DECR:
498 case R500_FC_B_OP1_DECR:
499 fprintf(stderr, "DECR");
500 break;
501 case R500_FC_B_OP0_INCR:
502 case R500_FC_B_OP1_INCR:
503 fprintf(stderr, "INCR");
504 break;
505 }
506 }
507 /*POP_CNT B_ELSE */
508 fprintf(stderr, " %d %1x", (inst >> 16) & 0x1f, (inst & R500_FC_B_ELSE) >> 4);
509 inst = code->inst[n].inst3;
510 /* JUMP_ADDR */
511 fprintf(stderr, " %d", inst >> 16);
512
513 if(code->inst[n].inst2 & R500_FC_IGNORE_UNCOVERED){
514 fprintf(stderr, " IGN_UNC");
515 }
516 inst = code->inst[n].inst3;
517 fprintf(stderr, "\n\t3:FC_ADDR 0x%08x:", inst);
518 fprintf(stderr, "BOOL: 0x%02x, INT: 0x%02x, JUMP_ADDR: %d, JMP_GLBL: %1x\n",
519 inst & 0x1f, (inst >> 8) & 0x1f, (inst >> 16) & 0x1ff, inst >> 31);
520 break;
521 case R500_INST_TYPE_TEX:
522 inst = code->inst[n].inst1;
523 fprintf(stderr,"\t1:TEX_INST: 0x%08x: id: %d op:%s, %s, %s %s\n", inst, (inst >> 16) & 0xf,
524 to_texop((inst >> 22) & 0x7), (inst & (1<<25)) ? "ACQ" : "",
525 (inst & (1<<26)) ? "IGNUNC" : "", (inst & (1<<27)) ? "UNSCALED" : "SCALED");
526 inst = code->inst[n].inst2;
527 fprintf(stderr,"\t2:TEX_ADDR: 0x%08x: src: %d%s %s/%s/%s/%s dst: %d%s %s/%s/%s/%s\n", inst,
528 inst & 127, inst & (1<<7) ? "(rel)" : "",
529 toswiz((inst >> 8) & 0x3), toswiz((inst >> 10) & 0x3),
530 toswiz((inst >> 12) & 0x3), toswiz((inst >> 14) & 0x3),
531 (inst >> 16) & 127, inst & (1<<23) ? "(rel)" : "",
532 toswiz((inst >> 24) & 0x3), toswiz((inst >> 26) & 0x3),
533 toswiz((inst >> 28) & 0x3), toswiz((inst >> 30) & 0x3));
534
535 fprintf(stderr,"\t3:TEX_DXDY: 0x%08x\n", code->inst[n].inst3);
536 break;
537 }
538 fprintf(stderr,"\n");
539 }
540
541 }
542