1 %{
2 /*
3 * Copyright © 2009 Intel Corporation
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 */
24 #include "main/glheader.h"
25 #include "main/imports.h"
26 #include "program/prog_instruction.h"
27 #include "program/prog_statevars.h"
28 #include "program/symbol_table.h"
29 #include "program/program_parser.h"
30 #include "program/program_parse.tab.h"
31 #include "util/strtod.h"
32
33 #define require_ARB_vp (yyextra->mode == ARB_vertex)
34 #define require_ARB_fp (yyextra->mode == ARB_fragment)
35 #define require_shadow (yyextra->option.Shadow)
36 #define require_rect (yyextra->option.TexRect)
37 #define require_texarray (yyextra->option.TexArray)
38
39 #ifndef HAVE_UNISTD_H
40 #define YY_NO_UNISTD_H
41 #endif
42
43 #define return_token_or_IDENTIFIER(condition, token) \
44 do { \
45 if (condition) { \
46 return token; \
47 } else { \
48 return handle_ident(yyextra, yytext, yylval); \
49 } \
50 } while (0)
51
52 #define return_token_or_DOT(condition, token) \
53 do { \
54 if (condition) { \
55 return token; \
56 } else { \
57 yyless(1); \
58 return DOT; \
59 } \
60 } while (0)
61
62
63 #define return_opcode(condition, token, opcode, len) \
64 do { \
65 if (condition && \
66 _mesa_parse_instruction_suffix(yyextra, \
67 yytext + len, \
68 & yylval->temp_inst)) { \
69 yylval->temp_inst.Opcode = OPCODE_ ## opcode; \
70 return token; \
71 } else { \
72 return handle_ident(yyextra, yytext, yylval); \
73 } \
74 } while (0)
75
76 #define SWIZZLE_INVAL MAKE_SWIZZLE4(SWIZZLE_NIL, SWIZZLE_NIL, \
77 SWIZZLE_NIL, SWIZZLE_NIL)
78
79 static unsigned
mask_from_char(char c)80 mask_from_char(char c)
81 {
82 switch (c) {
83 case 'x':
84 case 'r':
85 return WRITEMASK_X;
86 case 'y':
87 case 'g':
88 return WRITEMASK_Y;
89 case 'z':
90 case 'b':
91 return WRITEMASK_Z;
92 case 'w':
93 case 'a':
94 return WRITEMASK_W;
95 }
96
97 return 0;
98 }
99
100 static unsigned
swiz_from_char(char c)101 swiz_from_char(char c)
102 {
103 switch (c) {
104 case 'x':
105 case 'r':
106 return SWIZZLE_X;
107 case 'y':
108 case 'g':
109 return SWIZZLE_Y;
110 case 'z':
111 case 'b':
112 return SWIZZLE_Z;
113 case 'w':
114 case 'a':
115 return SWIZZLE_W;
116 }
117
118 return 0;
119 }
120
121 static int
handle_ident(struct asm_parser_state * state,const char * text,YYSTYPE * lval)122 handle_ident(struct asm_parser_state *state, const char *text, YYSTYPE *lval)
123 {
124 lval->string = strdup(text);
125
126 return (_mesa_symbol_table_find_symbol(state->st, text) == NULL)
127 ? IDENTIFIER : USED_IDENTIFIER;
128 }
129
130 #define YY_USER_ACTION \
131 do { \
132 yylloc->first_column = yylloc->last_column; \
133 yylloc->last_column += yyleng; \
134 if ((yylloc->first_line == 1) \
135 && (yylloc->first_column == 1)) { \
136 yylloc->position = 1; \
137 } else { \
138 yylloc->position += yylloc->last_column - yylloc->first_column; \
139 } \
140 } while(0);
141
142 #define YY_NO_INPUT
143
144 /* Yes, this is intentionally doing nothing. We have this line of code
145 here only to avoid the compiler complaining about an unput function
146 that is defined, but never called. */
147 #define YY_USER_INIT while (0) { unput(0); }
148
149 #define YY_EXTRA_TYPE struct asm_parser_state *
150
151 /* Flex defines a couple of functions with no declarations nor the
152 static keyword. Declare them here to avoid a compiler warning. */
153 int yyget_column (yyscan_t yyscanner);
154 void yyset_column (int column_no , yyscan_t yyscanner);
155
156 %}
157
158 num [0-9]+
159 exp [Ee][-+]?[0-9]+
160 frac "."[0-9]+
161 dot "."[ \t]*
162
163 sat (_SAT)?
164
165 %option prefix="_mesa_program_lexer_"
166 %option bison-bridge bison-locations reentrant noyywrap
167 %%
168
169 "!!ARBvp1.0" { return ARBvp_10; }
170 "!!ARBfp1.0" { return ARBfp_10; }
171 ADDRESS {
172 yylval->integer = at_address;
173 return_token_or_IDENTIFIER(require_ARB_vp, ADDRESS);
174 }
175 ALIAS { return ALIAS; }
176 ATTRIB { return ATTRIB; }
177 END { return END; }
178 OPTION { return OPTION; }
179 OUTPUT { return OUTPUT; }
180 PARAM { return PARAM; }
181 TEMP { yylval->integer = at_temp; return TEMP; }
182
183 ABS{sat} { return_opcode( 1, VECTOR_OP, ABS, 3); }
184 ADD{sat} { return_opcode( 1, BIN_OP, ADD, 3); }
185 ARL { return_opcode(require_ARB_vp, ARL, ARL, 3); }
186
187 CMP{sat} { return_opcode(require_ARB_fp, TRI_OP, CMP, 3); }
188 COS{sat} { return_opcode(require_ARB_fp, SCALAR_OP, COS, 3); }
189
190 DP3{sat} { return_opcode( 1, BIN_OP, DP3, 3); }
191 DP4{sat} { return_opcode( 1, BIN_OP, DP4, 3); }
192 DPH{sat} { return_opcode( 1, BIN_OP, DPH, 3); }
193 DST{sat} { return_opcode( 1, BIN_OP, DST, 3); }
194
195 EX2{sat} { return_opcode( 1, SCALAR_OP, EX2, 3); }
196 EXP { return_opcode(require_ARB_vp, SCALAR_OP, EXP, 3); }
197
198 FLR{sat} { return_opcode( 1, VECTOR_OP, FLR, 3); }
199 FRC{sat} { return_opcode( 1, VECTOR_OP, FRC, 3); }
200
201 KIL { return_opcode(require_ARB_fp, KIL, KIL, 3); }
202
203 LIT{sat} { return_opcode( 1, VECTOR_OP, LIT, 3); }
204 LG2{sat} { return_opcode( 1, SCALAR_OP, LG2, 3); }
205 LOG { return_opcode(require_ARB_vp, SCALAR_OP, LOG, 3); }
206 LRP{sat} { return_opcode(require_ARB_fp, TRI_OP, LRP, 3); }
207
208 MAD{sat} { return_opcode( 1, TRI_OP, MAD, 3); }
209 MAX{sat} { return_opcode( 1, BIN_OP, MAX, 3); }
210 MIN{sat} { return_opcode( 1, BIN_OP, MIN, 3); }
211 MOV{sat} { return_opcode( 1, VECTOR_OP, MOV, 3); }
212 MUL{sat} { return_opcode( 1, BIN_OP, MUL, 3); }
213
214 POW{sat} { return_opcode( 1, BINSC_OP, POW, 3); }
215
216 RCP{sat} { return_opcode( 1, SCALAR_OP, RCP, 3); }
217 RSQ{sat} { return_opcode( 1, SCALAR_OP, RSQ, 3); }
218
219 SCS{sat} { return_opcode(require_ARB_fp, SCALAR_OP, SCS, 3); }
220 SGE{sat} { return_opcode( 1, BIN_OP, SGE, 3); }
221 SIN{sat} { return_opcode(require_ARB_fp, SCALAR_OP, SIN, 3); }
222 SLT{sat} { return_opcode( 1, BIN_OP, SLT, 3); }
223 SUB{sat} { return_opcode( 1, BIN_OP, SUB, 3); }
224 SWZ{sat} { return_opcode( 1, SWZ, SWZ, 3); }
225
226 TEX{sat} { return_opcode(require_ARB_fp, SAMPLE_OP, TEX, 3); }
227 TXB{sat} { return_opcode(require_ARB_fp, SAMPLE_OP, TXB, 3); }
228 TXP{sat} { return_opcode(require_ARB_fp, SAMPLE_OP, TXP, 3); }
229
230 XPD{sat} { return_opcode( 1, BIN_OP, XPD, 3); }
231
232 vertex { return_token_or_IDENTIFIER(require_ARB_vp, VERTEX); }
233 fragment { return_token_or_IDENTIFIER(require_ARB_fp, FRAGMENT); }
234 program { return PROGRAM; }
235 state { return STATE; }
236 result { return RESULT; }
237
238 {dot}ambient { return AMBIENT; }
239 {dot}attenuation { return ATTENUATION; }
240 {dot}back { return BACK; }
241 {dot}clip { return_token_or_DOT(require_ARB_vp, CLIP); }
242 {dot}color { return COLOR; }
243 {dot}depth { return_token_or_DOT(require_ARB_fp, DEPTH); }
244 {dot}diffuse { return DIFFUSE; }
245 {dot}direction { return DIRECTION; }
246 {dot}emission { return EMISSION; }
247 {dot}env { return ENV; }
248 {dot}eye { return EYE; }
249 {dot}fogcoord { return FOGCOORD; }
250 {dot}fog { return FOG; }
251 {dot}front { return FRONT; }
252 {dot}half { return HALF; }
253 {dot}inverse { return INVERSE; }
254 {dot}invtrans { return INVTRANS; }
255 {dot}light { return LIGHT; }
256 {dot}lightmodel { return LIGHTMODEL; }
257 {dot}lightprod { return LIGHTPROD; }
258 {dot}local { return LOCAL; }
259 {dot}material { return MATERIAL; }
260 {dot}program { return MAT_PROGRAM; }
261 {dot}matrix { return MATRIX; }
262 {dot}matrixindex { return_token_or_DOT(require_ARB_vp, MATRIXINDEX); }
263 {dot}modelview { return MODELVIEW; }
264 {dot}mvp { return MVP; }
265 {dot}normal { return_token_or_DOT(require_ARB_vp, NORMAL); }
266 {dot}object { return OBJECT; }
267 {dot}palette { return PALETTE; }
268 {dot}params { return PARAMS; }
269 {dot}plane { return PLANE; }
270 {dot}point { return_token_or_DOT(require_ARB_vp, POINT_TOK); }
271 {dot}pointsize { return_token_or_DOT(require_ARB_vp, POINTSIZE); }
272 {dot}position { return POSITION; }
273 {dot}primary { return PRIMARY; }
274 {dot}projection { return PROJECTION; }
275 {dot}range { return_token_or_DOT(require_ARB_fp, RANGE); }
276 {dot}row { return ROW; }
277 {dot}scenecolor { return SCENECOLOR; }
278 {dot}secondary { return SECONDARY; }
279 {dot}shininess { return SHININESS; }
280 {dot}size { return_token_or_DOT(require_ARB_vp, SIZE_TOK); }
281 {dot}specular { return SPECULAR; }
282 {dot}spot { return SPOT; }
283 {dot}texcoord { return TEXCOORD; }
284 {dot}texenv { return_token_or_DOT(require_ARB_fp, TEXENV); }
285 {dot}texgen { return_token_or_DOT(require_ARB_vp, TEXGEN); }
286 {dot}q { return_token_or_DOT(require_ARB_vp, TEXGEN_Q); }
287 {dot}s { return_token_or_DOT(require_ARB_vp, TEXGEN_S); }
288 {dot}t { return_token_or_DOT(require_ARB_vp, TEXGEN_T); }
289 {dot}texture { return TEXTURE; }
290 {dot}transpose { return TRANSPOSE; }
291 {dot}attrib { return_token_or_DOT(require_ARB_vp, VTXATTRIB); }
292 {dot}weight { return_token_or_DOT(require_ARB_vp, WEIGHT); }
293
294 texture { return_token_or_IDENTIFIER(require_ARB_fp, TEXTURE_UNIT); }
295 1D { return_token_or_IDENTIFIER(require_ARB_fp, TEX_1D); }
296 2D { return_token_or_IDENTIFIER(require_ARB_fp, TEX_2D); }
297 3D { return_token_or_IDENTIFIER(require_ARB_fp, TEX_3D); }
298 CUBE { return_token_or_IDENTIFIER(require_ARB_fp, TEX_CUBE); }
299 RECT { return_token_or_IDENTIFIER(require_ARB_fp && require_rect, TEX_RECT); }
300 SHADOW1D { return_token_or_IDENTIFIER(require_ARB_fp && require_shadow, TEX_SHADOW1D); }
301 SHADOW2D { return_token_or_IDENTIFIER(require_ARB_fp && require_shadow, TEX_SHADOW2D); }
302 SHADOWRECT { return_token_or_IDENTIFIER(require_ARB_fp && require_shadow && require_rect, TEX_SHADOWRECT); }
303 ARRAY1D { return_token_or_IDENTIFIER(require_ARB_fp && require_texarray, TEX_ARRAY1D); }
304 ARRAY2D { return_token_or_IDENTIFIER(require_ARB_fp && require_texarray, TEX_ARRAY2D); }
305 ARRAYSHADOW1D { return_token_or_IDENTIFIER(require_ARB_fp && require_shadow && require_texarray, TEX_ARRAYSHADOW1D); }
306 ARRAYSHADOW2D { return_token_or_IDENTIFIER(require_ARB_fp && require_shadow && require_texarray, TEX_ARRAYSHADOW2D); }
307
308 [_a-zA-Z$][_a-zA-Z0-9$]* { return handle_ident(yyextra, yytext, yylval); }
309
310 ".." { return DOT_DOT; }
311
312 {num} {
313 yylval->integer = strtol(yytext, NULL, 10);
314 return INTEGER;
315 }
316 {num}?{frac}{exp}? {
317 yylval->real = _mesa_strtof(yytext, NULL);
318 return REAL;
319 }
320 {num}"."/[^.] {
321 yylval->real = _mesa_strtof(yytext, NULL);
322 return REAL;
323 }
324 {num}{exp} {
325 yylval->real = _mesa_strtof(yytext, NULL);
326 return REAL;
327 }
328 {num}"."{exp} {
329 yylval->real = _mesa_strtof(yytext, NULL);
330 return REAL;
331 }
332
333 ".xyzw" {
334 yylval->swiz_mask.swizzle = SWIZZLE_NOOP;
335 yylval->swiz_mask.mask = WRITEMASK_XYZW;
336 return MASK4;
337 }
338
339 ".xy"[zw] {
340 yylval->swiz_mask.swizzle = SWIZZLE_INVAL;
341 yylval->swiz_mask.mask = WRITEMASK_XY
342 | mask_from_char(yytext[3]);
343 return MASK3;
344 }
345 ".xzw" {
346 yylval->swiz_mask.swizzle = SWIZZLE_INVAL;
347 yylval->swiz_mask.mask = WRITEMASK_XZW;
348 return MASK3;
349 }
350 ".yzw" {
351 yylval->swiz_mask.swizzle = SWIZZLE_INVAL;
352 yylval->swiz_mask.mask = WRITEMASK_YZW;
353 return MASK3;
354 }
355
356 ".x"[yzw] {
357 yylval->swiz_mask.swizzle = SWIZZLE_INVAL;
358 yylval->swiz_mask.mask = WRITEMASK_X
359 | mask_from_char(yytext[2]);
360 return MASK2;
361 }
362 ".y"[zw] {
363 yylval->swiz_mask.swizzle = SWIZZLE_INVAL;
364 yylval->swiz_mask.mask = WRITEMASK_Y
365 | mask_from_char(yytext[2]);
366 return MASK2;
367 }
368 ".zw" {
369 yylval->swiz_mask.swizzle = SWIZZLE_INVAL;
370 yylval->swiz_mask.mask = WRITEMASK_ZW;
371 return MASK2;
372 }
373
374 "."[xyzw] {
375 const unsigned s = swiz_from_char(yytext[1]);
376 yylval->swiz_mask.swizzle = MAKE_SWIZZLE4(s, s, s, s);
377 yylval->swiz_mask.mask = mask_from_char(yytext[1]);
378 return MASK1;
379 }
380
381 "."[xyzw]{4} {
382 yylval->swiz_mask.swizzle = MAKE_SWIZZLE4(swiz_from_char(yytext[1]),
383 swiz_from_char(yytext[2]),
384 swiz_from_char(yytext[3]),
385 swiz_from_char(yytext[4]));
386 yylval->swiz_mask.mask = 0;
387 return SWIZZLE;
388 }
389
390 ".rgba" {
391 yylval->swiz_mask.swizzle = SWIZZLE_NOOP;
392 yylval->swiz_mask.mask = WRITEMASK_XYZW;
393 return_token_or_DOT(require_ARB_fp, MASK4);
394 }
395
396 ".rg"[ba] {
397 yylval->swiz_mask.swizzle = SWIZZLE_INVAL;
398 yylval->swiz_mask.mask = WRITEMASK_XY
399 | mask_from_char(yytext[3]);
400 return_token_or_DOT(require_ARB_fp, MASK3);
401 }
402 ".rba" {
403 yylval->swiz_mask.swizzle = SWIZZLE_INVAL;
404 yylval->swiz_mask.mask = WRITEMASK_XZW;
405 return_token_or_DOT(require_ARB_fp, MASK3);
406 }
407 ".gba" {
408 yylval->swiz_mask.swizzle = SWIZZLE_INVAL;
409 yylval->swiz_mask.mask = WRITEMASK_YZW;
410 return_token_or_DOT(require_ARB_fp, MASK3);
411 }
412
413 ".r"[gba] {
414 yylval->swiz_mask.swizzle = SWIZZLE_INVAL;
415 yylval->swiz_mask.mask = WRITEMASK_X
416 | mask_from_char(yytext[2]);
417 return_token_or_DOT(require_ARB_fp, MASK2);
418 }
419 ".g"[ba] {
420 yylval->swiz_mask.swizzle = SWIZZLE_INVAL;
421 yylval->swiz_mask.mask = WRITEMASK_Y
422 | mask_from_char(yytext[2]);
423 return_token_or_DOT(require_ARB_fp, MASK2);
424 }
425 ".ba" {
426 yylval->swiz_mask.swizzle = SWIZZLE_INVAL;
427 yylval->swiz_mask.mask = WRITEMASK_ZW;
428 return_token_or_DOT(require_ARB_fp, MASK2);
429 }
430
431 "."[gba] {
432 const unsigned s = swiz_from_char(yytext[1]);
433 yylval->swiz_mask.swizzle = MAKE_SWIZZLE4(s, s, s, s);
434 yylval->swiz_mask.mask = mask_from_char(yytext[1]);
435 return_token_or_DOT(require_ARB_fp, MASK1);
436 }
437
438
439 ".r" {
440 if (require_ARB_vp) {
441 return TEXGEN_R;
442 } else {
443 yylval->swiz_mask.swizzle = MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_X,
444 SWIZZLE_X, SWIZZLE_X);
445 yylval->swiz_mask.mask = WRITEMASK_X;
446 return MASK1;
447 }
448 }
449
450 "."[rgba]{4} {
451 yylval->swiz_mask.swizzle = MAKE_SWIZZLE4(swiz_from_char(yytext[1]),
452 swiz_from_char(yytext[2]),
453 swiz_from_char(yytext[3]),
454 swiz_from_char(yytext[4]));
455 yylval->swiz_mask.mask = 0;
456 return_token_or_DOT(require_ARB_fp, SWIZZLE);
457 }
458
459 "." { return DOT; }
460
461 \n {
462 yylloc->first_line++;
463 yylloc->first_column = 1;
464 yylloc->last_line++;
465 yylloc->last_column = 1;
466 yylloc->position++;
467 }
468 [ \t\r]+ /* eat whitespace */ ;
469 #.*$ /* eat comments */ ;
470 . { return yytext[0]; }
471 %%
472
473 void
474 _mesa_program_lexer_ctor(void **scanner, struct asm_parser_state *state,
475 const char *string, size_t len)
476 {
477 yylex_init_extra(state, scanner);
478 yy_scan_bytes(string, len, *scanner);
479 }
480
481 void
_mesa_program_lexer_dtor(void * scanner)482 _mesa_program_lexer_dtor(void *scanner)
483 {
484 yylex_destroy(scanner);
485 }
486