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Merge branch 'mesa_7_7_branch'
[mesa.git] / src / mesa / drivers / dri / i915 / i915_fragprog.c
1 /**************************************************************************
2 *
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * 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, sub license, 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 portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28 #include "main/glheader.h"
29 #include "main/macros.h"
30 #include "main/enums.h"
31
32 #include "shader/prog_instruction.h"
33 #include "shader/prog_parameter.h"
34 #include "shader/program.h"
35 #include "shader/programopt.h"
36 #include "shader/prog_print.h"
37
38 #include "tnl/tnl.h"
39 #include "tnl/t_context.h"
40
41 #include "intel_batchbuffer.h"
42
43 #include "i915_reg.h"
44 #include "i915_context.h"
45 #include "i915_program.h"
46
47 static const GLfloat sin_quad_constants[2][4] = {
48 {
49 2.0,
50 -1.0,
51 .5,
52 .75
53 },
54 {
55 4.0,
56 -4.0,
57 1.0 / (2.0 * M_PI),
58 .2225
59 }
60 };
61
62 static const GLfloat sin_constants[4] = { 1.0,
63 -1.0 / (3 * 2 * 1),
64 1.0 / (5 * 4 * 3 * 2 * 1),
65 -1.0 / (7 * 6 * 5 * 4 * 3 * 2 * 1)
66 };
67
68 /* 1, -1/2!, 1/4!, -1/6! */
69 static const GLfloat cos_constants[4] = { 1.0,
70 -1.0 / (2 * 1),
71 1.0 / (4 * 3 * 2 * 1),
72 -1.0 / (6 * 5 * 4 * 3 * 2 * 1)
73 };
74
75 /**
76 * Retrieve a ureg for the given source register. Will emit
77 * constants, apply swizzling and negation as needed.
78 */
79 static GLuint
80 src_vector(struct i915_fragment_program *p,
81 const struct prog_src_register *source,
82 const struct gl_fragment_program *program)
83 {
84 GLuint src;
85
86 switch (source->File) {
87
88 /* Registers:
89 */
90 case PROGRAM_TEMPORARY:
91 if (source->Index >= I915_MAX_TEMPORARY) {
92 i915_program_error(p, "Exceeded max temporary reg: %d/%d",
93 source->Index, I915_MAX_TEMPORARY);
94 return 0;
95 }
96 src = UREG(REG_TYPE_R, source->Index);
97 break;
98 case PROGRAM_INPUT:
99 switch (source->Index) {
100 case FRAG_ATTRIB_WPOS:
101 src = i915_emit_decl(p, REG_TYPE_T, p->wpos_tex, D0_CHANNEL_ALL);
102 break;
103 case FRAG_ATTRIB_COL0:
104 src = i915_emit_decl(p, REG_TYPE_T, T_DIFFUSE, D0_CHANNEL_ALL);
105 break;
106 case FRAG_ATTRIB_COL1:
107 src = i915_emit_decl(p, REG_TYPE_T, T_SPECULAR, D0_CHANNEL_XYZ);
108 src = swizzle(src, X, Y, Z, ONE);
109 break;
110 case FRAG_ATTRIB_FOGC:
111 src = i915_emit_decl(p, REG_TYPE_T, T_FOG_W, D0_CHANNEL_W);
112 src = swizzle(src, W, ZERO, ZERO, ONE);
113 break;
114 case FRAG_ATTRIB_TEX0:
115 case FRAG_ATTRIB_TEX1:
116 case FRAG_ATTRIB_TEX2:
117 case FRAG_ATTRIB_TEX3:
118 case FRAG_ATTRIB_TEX4:
119 case FRAG_ATTRIB_TEX5:
120 case FRAG_ATTRIB_TEX6:
121 case FRAG_ATTRIB_TEX7:
122 src = i915_emit_decl(p, REG_TYPE_T,
123 T_TEX0 + (source->Index - FRAG_ATTRIB_TEX0),
124 D0_CHANNEL_ALL);
125 break;
126
127 case FRAG_ATTRIB_VAR0:
128 case FRAG_ATTRIB_VAR0 + 1:
129 case FRAG_ATTRIB_VAR0 + 2:
130 case FRAG_ATTRIB_VAR0 + 3:
131 case FRAG_ATTRIB_VAR0 + 4:
132 case FRAG_ATTRIB_VAR0 + 5:
133 case FRAG_ATTRIB_VAR0 + 6:
134 case FRAG_ATTRIB_VAR0 + 7:
135 src = i915_emit_decl(p, REG_TYPE_T,
136 T_TEX0 + (source->Index - FRAG_ATTRIB_VAR0),
137 D0_CHANNEL_ALL);
138 break;
139
140 default:
141 i915_program_error(p, "Bad source->Index: %d", source->Index);
142 return 0;
143 }
144 break;
145
146 /* Various paramters and env values. All emitted to
147 * hardware as program constants.
148 */
149 case PROGRAM_LOCAL_PARAM:
150 src = i915_emit_param4fv(p, program->Base.LocalParams[source->Index]);
151 break;
152
153 case PROGRAM_ENV_PARAM:
154 src =
155 i915_emit_param4fv(p,
156 p->ctx->FragmentProgram.Parameters[source->
157 Index]);
158 break;
159
160 case PROGRAM_CONSTANT:
161 case PROGRAM_STATE_VAR:
162 case PROGRAM_NAMED_PARAM:
163 case PROGRAM_UNIFORM:
164 src =
165 i915_emit_param4fv(p,
166 program->Base.Parameters->ParameterValues[source->
167 Index]);
168 break;
169
170 default:
171 i915_program_error(p, "Bad source->File: %d", source->File);
172 return 0;
173 }
174
175 src = swizzle(src,
176 GET_SWZ(source->Swizzle, 0),
177 GET_SWZ(source->Swizzle, 1),
178 GET_SWZ(source->Swizzle, 2), GET_SWZ(source->Swizzle, 3));
179
180 if (source->Negate)
181 src = negate(src,
182 GET_BIT(source->Negate, 0),
183 GET_BIT(source->Negate, 1),
184 GET_BIT(source->Negate, 2),
185 GET_BIT(source->Negate, 3));
186
187 return src;
188 }
189
190
191 static GLuint
192 get_result_vector(struct i915_fragment_program *p,
193 const struct prog_instruction *inst)
194 {
195 switch (inst->DstReg.File) {
196 case PROGRAM_OUTPUT:
197 switch (inst->DstReg.Index) {
198 case FRAG_RESULT_COLOR:
199 return UREG(REG_TYPE_OC, 0);
200 case FRAG_RESULT_DEPTH:
201 p->depth_written = 1;
202 return UREG(REG_TYPE_OD, 0);
203 default:
204 i915_program_error(p, "Bad inst->DstReg.Index: %d",
205 inst->DstReg.Index);
206 return 0;
207 }
208 case PROGRAM_TEMPORARY:
209 return UREG(REG_TYPE_R, inst->DstReg.Index);
210 default:
211 i915_program_error(p, "Bad inst->DstReg.File: %d", inst->DstReg.File);
212 return 0;
213 }
214 }
215
216 static GLuint
217 get_result_flags(const struct prog_instruction *inst)
218 {
219 GLuint flags = 0;
220
221 if (inst->SaturateMode == SATURATE_ZERO_ONE)
222 flags |= A0_DEST_SATURATE;
223 if (inst->DstReg.WriteMask & WRITEMASK_X)
224 flags |= A0_DEST_CHANNEL_X;
225 if (inst->DstReg.WriteMask & WRITEMASK_Y)
226 flags |= A0_DEST_CHANNEL_Y;
227 if (inst->DstReg.WriteMask & WRITEMASK_Z)
228 flags |= A0_DEST_CHANNEL_Z;
229 if (inst->DstReg.WriteMask & WRITEMASK_W)
230 flags |= A0_DEST_CHANNEL_W;
231
232 return flags;
233 }
234
235 static GLuint
236 translate_tex_src_target(struct i915_fragment_program *p, GLubyte bit)
237 {
238 switch (bit) {
239 case TEXTURE_1D_INDEX:
240 return D0_SAMPLE_TYPE_2D;
241 case TEXTURE_2D_INDEX:
242 return D0_SAMPLE_TYPE_2D;
243 case TEXTURE_RECT_INDEX:
244 return D0_SAMPLE_TYPE_2D;
245 case TEXTURE_3D_INDEX:
246 return D0_SAMPLE_TYPE_VOLUME;
247 case TEXTURE_CUBE_INDEX:
248 return D0_SAMPLE_TYPE_CUBE;
249 default:
250 i915_program_error(p, "TexSrcBit: %d", bit);
251 return 0;
252 }
253 }
254
255 #define EMIT_TEX( OP ) \
256 do { \
257 GLuint dim = translate_tex_src_target( p, inst->TexSrcTarget ); \
258 GLuint sampler = i915_emit_decl(p, REG_TYPE_S, \
259 inst->TexSrcUnit, dim); \
260 GLuint coord = src_vector( p, &inst->SrcReg[0], program); \
261 /* Texel lookup */ \
262 \
263 i915_emit_texld( p, get_live_regs(p, inst), \
264 get_result_vector( p, inst ), \
265 get_result_flags( inst ), \
266 sampler, \
267 coord, \
268 OP); \
269 } while (0)
270
271 #define EMIT_ARITH( OP, N ) \
272 do { \
273 i915_emit_arith( p, \
274 OP, \
275 get_result_vector( p, inst ), \
276 get_result_flags( inst ), 0, \
277 (N<1)?0:src_vector( p, &inst->SrcReg[0], program), \
278 (N<2)?0:src_vector( p, &inst->SrcReg[1], program), \
279 (N<3)?0:src_vector( p, &inst->SrcReg[2], program)); \
280 } while (0)
281
282 #define EMIT_1ARG_ARITH( OP ) EMIT_ARITH( OP, 1 )
283 #define EMIT_2ARG_ARITH( OP ) EMIT_ARITH( OP, 2 )
284 #define EMIT_3ARG_ARITH( OP ) EMIT_ARITH( OP, 3 )
285
286 /*
287 * TODO: consider moving this into core
288 */
289 static void calc_live_regs( struct i915_fragment_program *p )
290 {
291 const struct gl_fragment_program *program = p->ctx->FragmentProgram._Current;
292 GLuint regsUsed = 0xffff0000;
293 GLint i;
294
295 for (i = program->Base.NumInstructions - 1; i >= 0; i--) {
296 struct prog_instruction *inst = &program->Base.Instructions[i];
297 int opArgs = _mesa_num_inst_src_regs(inst->Opcode);
298 int a;
299
300 /* Register is written to: unmark as live for this and preceeding ops */
301 if (inst->DstReg.File == PROGRAM_TEMPORARY)
302 regsUsed &= ~(1 << inst->DstReg.Index);
303
304 for (a = 0; a < opArgs; a++) {
305 /* Register is read from: mark as live for this and preceeding ops */
306 if (inst->SrcReg[a].File == PROGRAM_TEMPORARY)
307 regsUsed |= 1 << inst->SrcReg[a].Index;
308 }
309
310 p->usedRegs[i] = regsUsed;
311 }
312 }
313
314 static GLuint get_live_regs( struct i915_fragment_program *p,
315 const struct prog_instruction *inst )
316 {
317 const struct gl_fragment_program *program = p->ctx->FragmentProgram._Current;
318 GLuint nr = inst - program->Base.Instructions;
319
320 return p->usedRegs[nr];
321 }
322
323
324 /* Possible concerns:
325 *
326 * SIN, COS -- could use another taylor step?
327 * LIT -- results seem a little different to sw mesa
328 * LOG -- different to mesa on negative numbers, but this is conformant.
329 *
330 * Parse failures -- Mesa doesn't currently give a good indication
331 * internally whether a particular program string parsed or not. This
332 * can lead to confusion -- hopefully we cope with it ok now.
333 *
334 */
335 static void
336 upload_program(struct i915_fragment_program *p)
337 {
338 const struct gl_fragment_program *program =
339 p->ctx->FragmentProgram._Current;
340 const struct prog_instruction *inst = program->Base.Instructions;
341
342 if (INTEL_DEBUG & DEBUG_WM)
343 _mesa_print_program(&program->Base);
344
345 /* Is this a parse-failed program? Ensure a valid program is
346 * loaded, as the flagging of an error isn't sufficient to stop
347 * this being uploaded to hardware.
348 */
349 if (inst[0].Opcode == OPCODE_END) {
350 GLuint tmp = i915_get_utemp(p);
351 i915_emit_arith(p,
352 A0_MOV,
353 UREG(REG_TYPE_OC, 0),
354 A0_DEST_CHANNEL_ALL, 0,
355 swizzle(tmp, ONE, ZERO, ONE, ONE), 0, 0);
356 return;
357 }
358
359 if (program->Base.NumInstructions > I915_MAX_INSN) {
360 i915_program_error( p, "Exceeded max instructions" );
361 return;
362 }
363
364 /* Not always needed:
365 */
366 calc_live_regs(p);
367
368 while (1) {
369 GLuint src0, src1, src2, flags;
370 GLuint tmp = 0, dst, consts0 = 0, consts1 = 0;
371
372 switch (inst->Opcode) {
373 case OPCODE_ABS:
374 src0 = src_vector(p, &inst->SrcReg[0], program);
375 i915_emit_arith(p,
376 A0_MAX,
377 get_result_vector(p, inst),
378 get_result_flags(inst), 0,
379 src0, negate(src0, 1, 1, 1, 1), 0);
380 break;
381
382 case OPCODE_ADD:
383 EMIT_2ARG_ARITH(A0_ADD);
384 break;
385
386 case OPCODE_CMP:
387 src0 = src_vector(p, &inst->SrcReg[0], program);
388 src1 = src_vector(p, &inst->SrcReg[1], program);
389 src2 = src_vector(p, &inst->SrcReg[2], program);
390 i915_emit_arith(p, A0_CMP, get_result_vector(p, inst), get_result_flags(inst), 0, src0, src2, src1); /* NOTE: order of src2, src1 */
391 break;
392
393 case OPCODE_COS:
394 src0 = src_vector(p, &inst->SrcReg[0], program);
395 tmp = i915_get_utemp(p);
396 consts0 = i915_emit_const4fv(p, sin_quad_constants[0]);
397 consts1 = i915_emit_const4fv(p, sin_quad_constants[1]);
398
399 /* Reduce range from repeating about [-pi,pi] to [-1,1] */
400 i915_emit_arith(p,
401 A0_MAD,
402 tmp, A0_DEST_CHANNEL_X, 0,
403 src0,
404 swizzle(consts1, Z, ZERO, ZERO, ZERO), /* 1/(2pi) */
405 swizzle(consts0, W, ZERO, ZERO, ZERO)); /* .75 */
406
407 i915_emit_arith(p, A0_FRC, tmp, A0_DEST_CHANNEL_X, 0, tmp, 0, 0);
408
409 i915_emit_arith(p,
410 A0_MAD,
411 tmp, A0_DEST_CHANNEL_X, 0,
412 tmp,
413 swizzle(consts0, X, ZERO, ZERO, ZERO), /* 2 */
414 swizzle(consts0, Y, ZERO, ZERO, ZERO)); /* -1 */
415
416 /* Compute COS with the same calculation used for SIN, but a
417 * different source range has been mapped to [-1,1] this time.
418 */
419
420 /* tmp.y = abs(tmp.x); {x, abs(x), 0, 0} */
421 i915_emit_arith(p,
422 A0_MAX,
423 tmp, A0_DEST_CHANNEL_Y, 0,
424 swizzle(tmp, ZERO, X, ZERO, ZERO),
425 negate(swizzle(tmp, ZERO, X, ZERO, ZERO), 0, 1, 0, 0),
426 0);
427
428 /* tmp.y = tmp.y * tmp.x; {x, x * abs(x), 0, 0} */
429 i915_emit_arith(p,
430 A0_MUL,
431 tmp, A0_DEST_CHANNEL_Y, 0,
432 swizzle(tmp, ZERO, X, ZERO, ZERO),
433 tmp,
434 0);
435
436 /* tmp.x = tmp.xy DP sin_quad_constants[2].xy */
437 i915_emit_arith(p,
438 A0_DP3,
439 tmp, A0_DEST_CHANNEL_X, 0,
440 tmp,
441 swizzle(consts1, X, Y, ZERO, ZERO),
442 0);
443
444 /* tmp.x now contains a first approximation (y). Now, weight it
445 * against tmp.y**2 to get closer.
446 */
447 i915_emit_arith(p,
448 A0_MAX,
449 tmp, A0_DEST_CHANNEL_Y, 0,
450 swizzle(tmp, ZERO, X, ZERO, ZERO),
451 negate(swizzle(tmp, ZERO, X, ZERO, ZERO), 0, 1, 0, 0),
452 0);
453
454 /* tmp.y = tmp.x * tmp.y - tmp.x; {y, y * abs(y) - y, 0, 0} */
455 i915_emit_arith(p,
456 A0_MAD,
457 tmp, A0_DEST_CHANNEL_Y, 0,
458 swizzle(tmp, ZERO, X, ZERO, ZERO),
459 swizzle(tmp, ZERO, Y, ZERO, ZERO),
460 negate(swizzle(tmp, ZERO, X, ZERO, ZERO), 0, 1, 0, 0));
461
462 /* result = .2225 * tmp.y + tmp.x =.2225(y * abs(y) - y) + y= */
463 i915_emit_arith(p,
464 A0_MAD,
465 get_result_vector(p, inst),
466 get_result_flags(inst), 0,
467 swizzle(consts1, W, W, W, W),
468 swizzle(tmp, Y, Y, Y, Y),
469 swizzle(tmp, X, X, X, X));
470 break;
471
472 case OPCODE_DP3:
473 EMIT_2ARG_ARITH(A0_DP3);
474 break;
475
476 case OPCODE_DP4:
477 EMIT_2ARG_ARITH(A0_DP4);
478 break;
479
480 case OPCODE_DPH:
481 src0 = src_vector(p, &inst->SrcReg[0], program);
482 src1 = src_vector(p, &inst->SrcReg[1], program);
483
484 i915_emit_arith(p,
485 A0_DP4,
486 get_result_vector(p, inst),
487 get_result_flags(inst), 0,
488 swizzle(src0, X, Y, Z, ONE), src1, 0);
489 break;
490
491 case OPCODE_DST:
492 src0 = src_vector(p, &inst->SrcReg[0], program);
493 src1 = src_vector(p, &inst->SrcReg[1], program);
494
495 /* result[0] = 1 * 1;
496 * result[1] = a[1] * b[1];
497 * result[2] = a[2] * 1;
498 * result[3] = 1 * b[3];
499 */
500 i915_emit_arith(p,
501 A0_MUL,
502 get_result_vector(p, inst),
503 get_result_flags(inst), 0,
504 swizzle(src0, ONE, Y, Z, ONE),
505 swizzle(src1, ONE, Y, ONE, W), 0);
506 break;
507
508 case OPCODE_EX2:
509 src0 = src_vector(p, &inst->SrcReg[0], program);
510
511 i915_emit_arith(p,
512 A0_EXP,
513 get_result_vector(p, inst),
514 get_result_flags(inst), 0,
515 swizzle(src0, X, X, X, X), 0, 0);
516 break;
517
518 case OPCODE_FLR:
519 EMIT_1ARG_ARITH(A0_FLR);
520 break;
521
522 case OPCODE_TRUNC:
523 EMIT_1ARG_ARITH(A0_TRC);
524 break;
525
526 case OPCODE_FRC:
527 EMIT_1ARG_ARITH(A0_FRC);
528 break;
529
530 case OPCODE_KIL:
531 src0 = src_vector(p, &inst->SrcReg[0], program);
532 tmp = i915_get_utemp(p);
533
534 i915_emit_texld(p, get_live_regs(p, inst),
535 tmp, A0_DEST_CHANNEL_ALL, /* use a dummy dest reg */
536 0, src0, T0_TEXKILL);
537 break;
538
539 case OPCODE_KIL_NV:
540 if (inst->DstReg.CondMask == COND_TR) {
541 tmp = i915_get_utemp(p);
542
543 i915_emit_texld(p, get_live_regs(p, inst),
544 tmp, A0_DEST_CHANNEL_ALL,
545 0, /* use a dummy dest reg */
546 swizzle(tmp, ONE, ONE, ONE, ONE), /* always */
547 T0_TEXKILL);
548 } else {
549 p->error = 1;
550 i915_program_error(p, "Unsupported KIL_NV condition code: %d",
551 inst->DstReg.CondMask);
552 }
553 break;
554
555 case OPCODE_LG2:
556 src0 = src_vector(p, &inst->SrcReg[0], program);
557
558 i915_emit_arith(p,
559 A0_LOG,
560 get_result_vector(p, inst),
561 get_result_flags(inst), 0,
562 swizzle(src0, X, X, X, X), 0, 0);
563 break;
564
565 case OPCODE_LIT:
566 src0 = src_vector(p, &inst->SrcReg[0], program);
567 tmp = i915_get_utemp(p);
568
569 /* tmp = max( a.xyzw, a.00zw )
570 * XXX: Clamp tmp.w to -128..128
571 * tmp.y = log(tmp.y)
572 * tmp.y = tmp.w * tmp.y
573 * tmp.y = exp(tmp.y)
574 * result = cmp (a.11-x1, a.1x01, a.1xy1 )
575 */
576 i915_emit_arith(p, A0_MAX, tmp, A0_DEST_CHANNEL_ALL, 0,
577 src0, swizzle(src0, ZERO, ZERO, Z, W), 0);
578
579 i915_emit_arith(p, A0_LOG, tmp, A0_DEST_CHANNEL_Y, 0,
580 swizzle(tmp, Y, Y, Y, Y), 0, 0);
581
582 i915_emit_arith(p, A0_MUL, tmp, A0_DEST_CHANNEL_Y, 0,
583 swizzle(tmp, ZERO, Y, ZERO, ZERO),
584 swizzle(tmp, ZERO, W, ZERO, ZERO), 0);
585
586 i915_emit_arith(p, A0_EXP, tmp, A0_DEST_CHANNEL_Y, 0,
587 swizzle(tmp, Y, Y, Y, Y), 0, 0);
588
589 i915_emit_arith(p, A0_CMP,
590 get_result_vector(p, inst),
591 get_result_flags(inst), 0,
592 negate(swizzle(tmp, ONE, ONE, X, ONE), 0, 0, 1, 0),
593 swizzle(tmp, ONE, X, ZERO, ONE),
594 swizzle(tmp, ONE, X, Y, ONE));
595
596 break;
597
598 case OPCODE_LRP:
599 src0 = src_vector(p, &inst->SrcReg[0], program);
600 src1 = src_vector(p, &inst->SrcReg[1], program);
601 src2 = src_vector(p, &inst->SrcReg[2], program);
602 flags = get_result_flags(inst);
603 tmp = i915_get_utemp(p);
604
605 /* b*a + c*(1-a)
606 *
607 * b*a + c - ca
608 *
609 * tmp = b*a + c,
610 * result = (-c)*a + tmp
611 */
612 i915_emit_arith(p, A0_MAD, tmp,
613 flags & A0_DEST_CHANNEL_ALL, 0, src1, src0, src2);
614
615 i915_emit_arith(p, A0_MAD,
616 get_result_vector(p, inst),
617 flags, 0, negate(src2, 1, 1, 1, 1), src0, tmp);
618 break;
619
620 case OPCODE_MAD:
621 EMIT_3ARG_ARITH(A0_MAD);
622 break;
623
624 case OPCODE_MAX:
625 EMIT_2ARG_ARITH(A0_MAX);
626 break;
627
628 case OPCODE_MIN:
629 src0 = src_vector(p, &inst->SrcReg[0], program);
630 src1 = src_vector(p, &inst->SrcReg[1], program);
631 tmp = i915_get_utemp(p);
632 flags = get_result_flags(inst);
633
634 i915_emit_arith(p,
635 A0_MAX,
636 tmp, flags & A0_DEST_CHANNEL_ALL, 0,
637 negate(src0, 1, 1, 1, 1),
638 negate(src1, 1, 1, 1, 1), 0);
639
640 i915_emit_arith(p,
641 A0_MOV,
642 get_result_vector(p, inst),
643 flags, 0, negate(tmp, 1, 1, 1, 1), 0, 0);
644 break;
645
646 case OPCODE_MOV:
647 EMIT_1ARG_ARITH(A0_MOV);
648 break;
649
650 case OPCODE_MUL:
651 EMIT_2ARG_ARITH(A0_MUL);
652 break;
653
654 case OPCODE_NOISE1:
655 case OPCODE_NOISE2:
656 case OPCODE_NOISE3:
657 case OPCODE_NOISE4:
658 /* Don't implement noise because we just don't have the instructions
659 * to spare. We aren't the first vendor to do so.
660 */
661 i915_program_error(p, "Stubbed-out noise functions");
662 i915_emit_arith(p,
663 A0_MOV,
664 get_result_vector(p, inst),
665 get_result_flags(inst), 0,
666 swizzle(tmp, ZERO, ZERO, ZERO, ZERO), 0, 0);
667
668 case OPCODE_POW:
669 src0 = src_vector(p, &inst->SrcReg[0], program);
670 src1 = src_vector(p, &inst->SrcReg[1], program);
671 tmp = i915_get_utemp(p);
672 flags = get_result_flags(inst);
673
674 /* XXX: masking on intermediate values, here and elsewhere.
675 */
676 i915_emit_arith(p,
677 A0_LOG,
678 tmp, A0_DEST_CHANNEL_X, 0,
679 swizzle(src0, X, X, X, X), 0, 0);
680
681 i915_emit_arith(p, A0_MUL, tmp, A0_DEST_CHANNEL_X, 0, tmp, src1, 0);
682
683
684 i915_emit_arith(p,
685 A0_EXP,
686 get_result_vector(p, inst),
687 flags, 0, swizzle(tmp, X, X, X, X), 0, 0);
688
689 break;
690
691 case OPCODE_RCP:
692 src0 = src_vector(p, &inst->SrcReg[0], program);
693
694 i915_emit_arith(p,
695 A0_RCP,
696 get_result_vector(p, inst),
697 get_result_flags(inst), 0,
698 swizzle(src0, X, X, X, X), 0, 0);
699 break;
700
701 case OPCODE_RSQ:
702
703 src0 = src_vector(p, &inst->SrcReg[0], program);
704
705 i915_emit_arith(p,
706 A0_RSQ,
707 get_result_vector(p, inst),
708 get_result_flags(inst), 0,
709 swizzle(src0, X, X, X, X), 0, 0);
710 break;
711
712 case OPCODE_SCS:
713 src0 = src_vector(p, &inst->SrcReg[0], program);
714 tmp = i915_get_utemp(p);
715
716 /*
717 * t0.xy = MUL x.xx11, x.x1111 ; x^2, x, 1, 1
718 * t0 = MUL t0.xyxy t0.xx11 ; x^4, x^3, x^2, x
719 * t1 = MUL t0.xyyw t0.yz11 ; x^7 x^5 x^3 x
720 * scs.x = DP4 t1, sin_constants
721 * t1 = MUL t0.xxz1 t0.z111 ; x^6 x^4 x^2 1
722 * scs.y = DP4 t1, cos_constants
723 */
724 i915_emit_arith(p,
725 A0_MUL,
726 tmp, A0_DEST_CHANNEL_XY, 0,
727 swizzle(src0, X, X, ONE, ONE),
728 swizzle(src0, X, ONE, ONE, ONE), 0);
729
730 i915_emit_arith(p,
731 A0_MUL,
732 tmp, A0_DEST_CHANNEL_ALL, 0,
733 swizzle(tmp, X, Y, X, Y),
734 swizzle(tmp, X, X, ONE, ONE), 0);
735
736 if (inst->DstReg.WriteMask & WRITEMASK_Y) {
737 GLuint tmp1;
738
739 if (inst->DstReg.WriteMask & WRITEMASK_X)
740 tmp1 = i915_get_utemp(p);
741 else
742 tmp1 = tmp;
743
744 i915_emit_arith(p,
745 A0_MUL,
746 tmp1, A0_DEST_CHANNEL_ALL, 0,
747 swizzle(tmp, X, Y, Y, W),
748 swizzle(tmp, X, Z, ONE, ONE), 0);
749
750 i915_emit_arith(p,
751 A0_DP4,
752 get_result_vector(p, inst),
753 A0_DEST_CHANNEL_Y, 0,
754 swizzle(tmp1, W, Z, Y, X),
755 i915_emit_const4fv(p, sin_constants), 0);
756 }
757
758 if (inst->DstReg.WriteMask & WRITEMASK_X) {
759 i915_emit_arith(p,
760 A0_MUL,
761 tmp, A0_DEST_CHANNEL_XYZ, 0,
762 swizzle(tmp, X, X, Z, ONE),
763 swizzle(tmp, Z, ONE, ONE, ONE), 0);
764
765 i915_emit_arith(p,
766 A0_DP4,
767 get_result_vector(p, inst),
768 A0_DEST_CHANNEL_X, 0,
769 swizzle(tmp, ONE, Z, Y, X),
770 i915_emit_const4fv(p, cos_constants), 0);
771 }
772 break;
773
774 case OPCODE_SEQ:
775 tmp = i915_get_utemp(p);
776 flags = get_result_flags(inst);
777 dst = get_result_vector(p, inst);
778
779 /* dst = src1 >= src2 */
780 i915_emit_arith(p,
781 A0_SGE,
782 dst,
783 flags, 0,
784 src_vector(p, &inst->SrcReg[0], program),
785 src_vector(p, &inst->SrcReg[1], program),
786 0);
787 /* tmp = src1 <= src2 */
788 i915_emit_arith(p,
789 A0_SGE,
790 tmp,
791 flags, 0,
792 negate(src_vector(p, &inst->SrcReg[0], program),
793 1, 1, 1, 1),
794 negate(src_vector(p, &inst->SrcReg[1], program),
795 1, 1, 1, 1),
796 0);
797 /* dst = tmp && dst */
798 i915_emit_arith(p,
799 A0_MUL,
800 dst,
801 flags, 0,
802 dst,
803 tmp,
804 0);
805 break;
806
807 case OPCODE_SIN:
808 src0 = src_vector(p, &inst->SrcReg[0], program);
809 tmp = i915_get_utemp(p);
810 consts0 = i915_emit_const4fv(p, sin_quad_constants[0]);
811 consts1 = i915_emit_const4fv(p, sin_quad_constants[1]);
812
813 /* Reduce range from repeating about [-pi,pi] to [-1,1] */
814 i915_emit_arith(p,
815 A0_MAD,
816 tmp, A0_DEST_CHANNEL_X, 0,
817 src0,
818 swizzle(consts1, Z, ZERO, ZERO, ZERO), /* 1/(2pi) */
819 swizzle(consts0, Z, ZERO, ZERO, ZERO)); /* .5 */
820
821 i915_emit_arith(p, A0_FRC, tmp, A0_DEST_CHANNEL_X, 0, tmp, 0, 0);
822
823 i915_emit_arith(p,
824 A0_MAD,
825 tmp, A0_DEST_CHANNEL_X, 0,
826 tmp,
827 swizzle(consts0, X, ZERO, ZERO, ZERO), /* 2 */
828 swizzle(consts0, Y, ZERO, ZERO, ZERO)); /* -1 */
829
830 /* Compute sin using a quadratic and quartic. It gives continuity
831 * that repeating the Taylor series lacks every 2*pi, and has
832 * reduced error.
833 *
834 * The idea was described at:
835 * http://www.devmaster.net/forums/showthread.php?t=5784
836 */
837
838 /* tmp.y = abs(tmp.x); {x, abs(x), 0, 0} */
839 i915_emit_arith(p,
840 A0_MAX,
841 tmp, A0_DEST_CHANNEL_Y, 0,
842 swizzle(tmp, ZERO, X, ZERO, ZERO),
843 negate(swizzle(tmp, ZERO, X, ZERO, ZERO), 0, 1, 0, 0),
844 0);
845
846 /* tmp.y = tmp.y * tmp.x; {x, x * abs(x), 0, 0} */
847 i915_emit_arith(p,
848 A0_MUL,
849 tmp, A0_DEST_CHANNEL_Y, 0,
850 swizzle(tmp, ZERO, X, ZERO, ZERO),
851 tmp,
852 0);
853
854 /* tmp.x = tmp.xy DP sin_quad_constants[2].xy */
855 i915_emit_arith(p,
856 A0_DP3,
857 tmp, A0_DEST_CHANNEL_X, 0,
858 tmp,
859 swizzle(consts1, X, Y, ZERO, ZERO),
860 0);
861
862 /* tmp.x now contains a first approximation (y). Now, weight it
863 * against tmp.y**2 to get closer.
864 */
865 i915_emit_arith(p,
866 A0_MAX,
867 tmp, A0_DEST_CHANNEL_Y, 0,
868 swizzle(tmp, ZERO, X, ZERO, ZERO),
869 negate(swizzle(tmp, ZERO, X, ZERO, ZERO), 0, 1, 0, 0),
870 0);
871
872 /* tmp.y = tmp.x * tmp.y - tmp.x; {y, y * abs(y) - y, 0, 0} */
873 i915_emit_arith(p,
874 A0_MAD,
875 tmp, A0_DEST_CHANNEL_Y, 0,
876 swizzle(tmp, ZERO, X, ZERO, ZERO),
877 swizzle(tmp, ZERO, Y, ZERO, ZERO),
878 negate(swizzle(tmp, ZERO, X, ZERO, ZERO), 0, 1, 0, 0));
879
880 /* result = .2225 * tmp.y + tmp.x =.2225(y * abs(y) - y) + y= */
881 i915_emit_arith(p,
882 A0_MAD,
883 get_result_vector(p, inst),
884 get_result_flags(inst), 0,
885 swizzle(consts1, W, W, W, W),
886 swizzle(tmp, Y, Y, Y, Y),
887 swizzle(tmp, X, X, X, X));
888
889 break;
890
891 case OPCODE_SGE:
892 EMIT_2ARG_ARITH(A0_SGE);
893 break;
894
895 case OPCODE_SGT:
896 i915_emit_arith(p,
897 A0_SLT,
898 get_result_vector( p, inst ),
899 get_result_flags( inst ), 0,
900 negate(src_vector( p, &inst->SrcReg[0], program),
901 1, 1, 1, 1),
902 negate(src_vector( p, &inst->SrcReg[1], program),
903 1, 1, 1, 1),
904 0);
905 break;
906
907 case OPCODE_SLE:
908 i915_emit_arith(p,
909 A0_SGE,
910 get_result_vector( p, inst ),
911 get_result_flags( inst ), 0,
912 negate(src_vector( p, &inst->SrcReg[0], program),
913 1, 1, 1, 1),
914 negate(src_vector( p, &inst->SrcReg[1], program),
915 1, 1, 1, 1),
916 0);
917 break;
918
919 case OPCODE_SLT:
920 EMIT_2ARG_ARITH(A0_SLT);
921 break;
922
923 case OPCODE_SNE:
924 tmp = i915_get_utemp(p);
925 flags = get_result_flags(inst);
926 dst = get_result_vector(p, inst);
927
928 /* dst = src1 < src2 */
929 i915_emit_arith(p,
930 A0_SLT,
931 dst,
932 flags, 0,
933 src_vector(p, &inst->SrcReg[0], program),
934 src_vector(p, &inst->SrcReg[1], program),
935 0);
936 /* tmp = src1 > src2 */
937 i915_emit_arith(p,
938 A0_SLT,
939 tmp,
940 flags, 0,
941 negate(src_vector(p, &inst->SrcReg[0], program),
942 1, 1, 1, 1),
943 negate(src_vector(p, &inst->SrcReg[1], program),
944 1, 1, 1, 1),
945 0);
946 /* dst = tmp || dst */
947 i915_emit_arith(p,
948 A0_ADD,
949 dst,
950 flags | A0_DEST_SATURATE, 0,
951 dst,
952 tmp,
953 0);
954 break;
955
956 case OPCODE_SUB:
957 src0 = src_vector(p, &inst->SrcReg[0], program);
958 src1 = src_vector(p, &inst->SrcReg[1], program);
959
960 i915_emit_arith(p,
961 A0_ADD,
962 get_result_vector(p, inst),
963 get_result_flags(inst), 0,
964 src0, negate(src1, 1, 1, 1, 1), 0);
965 break;
966
967 case OPCODE_SWZ:
968 EMIT_1ARG_ARITH(A0_MOV); /* extended swizzle handled natively */
969 break;
970
971 case OPCODE_TEX:
972 EMIT_TEX(T0_TEXLD);
973 break;
974
975 case OPCODE_TXB:
976 EMIT_TEX(T0_TEXLDB);
977 break;
978
979 case OPCODE_TXP:
980 EMIT_TEX(T0_TEXLDP);
981 break;
982
983 case OPCODE_XPD:
984 /* Cross product:
985 * result.x = src0.y * src1.z - src0.z * src1.y;
986 * result.y = src0.z * src1.x - src0.x * src1.z;
987 * result.z = src0.x * src1.y - src0.y * src1.x;
988 * result.w = undef;
989 */
990 src0 = src_vector(p, &inst->SrcReg[0], program);
991 src1 = src_vector(p, &inst->SrcReg[1], program);
992 tmp = i915_get_utemp(p);
993
994 i915_emit_arith(p,
995 A0_MUL,
996 tmp, A0_DEST_CHANNEL_ALL, 0,
997 swizzle(src0, Z, X, Y, ONE),
998 swizzle(src1, Y, Z, X, ONE), 0);
999
1000 i915_emit_arith(p,
1001 A0_MAD,
1002 get_result_vector(p, inst),
1003 get_result_flags(inst), 0,
1004 swizzle(src0, Y, Z, X, ONE),
1005 swizzle(src1, Z, X, Y, ONE),
1006 negate(tmp, 1, 1, 1, 0));
1007 break;
1008
1009 case OPCODE_END:
1010 return;
1011
1012 case OPCODE_BGNLOOP:
1013 case OPCODE_BGNSUB:
1014 case OPCODE_BRA:
1015 case OPCODE_BRK:
1016 case OPCODE_CAL:
1017 case OPCODE_CONT:
1018 case OPCODE_DDX:
1019 case OPCODE_DDY:
1020 case OPCODE_ELSE:
1021 case OPCODE_ENDIF:
1022 case OPCODE_ENDLOOP:
1023 case OPCODE_ENDSUB:
1024 case OPCODE_IF:
1025 case OPCODE_RET:
1026 p->error = 1;
1027 i915_program_error(p, "Unsupported opcode: %s",
1028 _mesa_opcode_string(inst->Opcode));
1029 return;
1030
1031 case OPCODE_EXP:
1032 case OPCODE_LOG:
1033 /* These opcodes are claimed as GLSL, NV_vp, and ARB_vp in
1034 * prog_instruction.h, but apparently GLSL doesn't ever emit them.
1035 * Instead, it translates to EX2 or LG2.
1036 */
1037 case OPCODE_TXD:
1038 case OPCODE_TXL:
1039 /* These opcodes are claimed by GLSL in prog_instruction.h, but
1040 * only NV_vp/fp appears to emit them.
1041 */
1042 default:
1043 i915_program_error(p, "bad opcode: %s",
1044 _mesa_opcode_string(inst->Opcode));
1045 return;
1046 }
1047
1048 inst++;
1049 i915_release_utemps(p);
1050 }
1051 }
1052
1053 /* Rather than trying to intercept and jiggle depth writes during
1054 * emit, just move the value into its correct position at the end of
1055 * the program:
1056 */
1057 static void
1058 fixup_depth_write(struct i915_fragment_program *p)
1059 {
1060 if (p->depth_written) {
1061 GLuint depth = UREG(REG_TYPE_OD, 0);
1062
1063 i915_emit_arith(p,
1064 A0_MOV,
1065 depth, A0_DEST_CHANNEL_W, 0,
1066 swizzle(depth, X, Y, Z, Z), 0, 0);
1067 }
1068 }
1069
1070
1071 static void
1072 check_wpos(struct i915_fragment_program *p)
1073 {
1074 GLuint inputs = p->FragProg.Base.InputsRead;
1075 GLint i;
1076
1077 p->wpos_tex = -1;
1078
1079 for (i = 0; i < p->ctx->Const.MaxTextureCoordUnits; i++) {
1080 if (inputs & (FRAG_BIT_TEX(i) | FRAG_BIT_VAR(i)))
1081 continue;
1082 else if (inputs & FRAG_BIT_WPOS) {
1083 p->wpos_tex = i;
1084 inputs &= ~FRAG_BIT_WPOS;
1085 }
1086 }
1087
1088 if (inputs & FRAG_BIT_WPOS) {
1089 i915_program_error(p, "No free texcoord for wpos value");
1090 }
1091 }
1092
1093
1094 static void
1095 translate_program(struct i915_fragment_program *p)
1096 {
1097 struct i915_context *i915 = I915_CONTEXT(p->ctx);
1098
1099 i915_init_program(i915, p);
1100 check_wpos(p);
1101 upload_program(p);
1102 fixup_depth_write(p);
1103 i915_fini_program(p);
1104
1105 p->translated = 1;
1106 }
1107
1108
1109 static void
1110 track_params(struct i915_fragment_program *p)
1111 {
1112 GLint i;
1113
1114 if (p->nr_params)
1115 _mesa_load_state_parameters(p->ctx, p->FragProg.Base.Parameters);
1116
1117 for (i = 0; i < p->nr_params; i++) {
1118 GLint reg = p->param[i].reg;
1119 COPY_4V(p->constant[reg], p->param[i].values);
1120 }
1121
1122 p->params_uptodate = 1;
1123 p->on_hardware = 0; /* overkill */
1124 }
1125
1126
1127 static void
1128 i915BindProgram(GLcontext * ctx, GLenum target, struct gl_program *prog)
1129 {
1130 if (target == GL_FRAGMENT_PROGRAM_ARB) {
1131 struct i915_context *i915 = I915_CONTEXT(ctx);
1132 struct i915_fragment_program *p = (struct i915_fragment_program *) prog;
1133
1134 if (i915->current_program == p)
1135 return;
1136
1137 if (i915->current_program) {
1138 i915->current_program->on_hardware = 0;
1139 i915->current_program->params_uptodate = 0;
1140 }
1141
1142 i915->current_program = p;
1143
1144 assert(p->on_hardware == 0);
1145 assert(p->params_uptodate == 0);
1146
1147 }
1148 }
1149
1150 static struct gl_program *
1151 i915NewProgram(GLcontext * ctx, GLenum target, GLuint id)
1152 {
1153 switch (target) {
1154 case GL_VERTEX_PROGRAM_ARB:
1155 return _mesa_init_vertex_program(ctx, CALLOC_STRUCT(gl_vertex_program),
1156 target, id);
1157
1158 case GL_FRAGMENT_PROGRAM_ARB:{
1159 struct i915_fragment_program *prog =
1160 CALLOC_STRUCT(i915_fragment_program);
1161 if (prog) {
1162 i915_init_program(I915_CONTEXT(ctx), prog);
1163
1164 return _mesa_init_fragment_program(ctx, &prog->FragProg,
1165 target, id);
1166 }
1167 else
1168 return NULL;
1169 }
1170
1171 default:
1172 /* Just fallback:
1173 */
1174 return _mesa_new_program(ctx, target, id);
1175 }
1176 }
1177
1178 static void
1179 i915DeleteProgram(GLcontext * ctx, struct gl_program *prog)
1180 {
1181 if (prog->Target == GL_FRAGMENT_PROGRAM_ARB) {
1182 struct i915_context *i915 = I915_CONTEXT(ctx);
1183 struct i915_fragment_program *p = (struct i915_fragment_program *) prog;
1184
1185 if (i915->current_program == p)
1186 i915->current_program = 0;
1187 }
1188
1189 _mesa_delete_program(ctx, prog);
1190 }
1191
1192
1193 static GLboolean
1194 i915IsProgramNative(GLcontext * ctx, GLenum target, struct gl_program *prog)
1195 {
1196 if (target == GL_FRAGMENT_PROGRAM_ARB) {
1197 struct i915_fragment_program *p = (struct i915_fragment_program *) prog;
1198
1199 if (!p->translated)
1200 translate_program(p);
1201
1202 return !p->error;
1203 }
1204 else
1205 return GL_TRUE;
1206 }
1207
1208 static void
1209 i915ProgramStringNotify(GLcontext * ctx,
1210 GLenum target, struct gl_program *prog)
1211 {
1212 if (target == GL_FRAGMENT_PROGRAM_ARB) {
1213 struct i915_fragment_program *p = (struct i915_fragment_program *) prog;
1214 p->translated = 0;
1215
1216 /* Hack: make sure fog is correctly enabled according to this
1217 * fragment program's fog options.
1218 */
1219 if (p->FragProg.FogOption) {
1220 /* add extra instructions to do fog, then turn off FogOption field */
1221 _mesa_append_fog_code(ctx, &p->FragProg);
1222 p->FragProg.FogOption = GL_NONE;
1223 }
1224 }
1225
1226 _tnl_program_string(ctx, target, prog);
1227 }
1228
1229 void
1230 i915_update_program(GLcontext *ctx)
1231 {
1232 struct intel_context *intel = intel_context(ctx);
1233 struct i915_context *i915 = i915_context(&intel->ctx);
1234 struct i915_fragment_program *fp =
1235 (struct i915_fragment_program *) ctx->FragmentProgram._Current;
1236
1237 if (i915->current_program != fp) {
1238 if (i915->current_program) {
1239 i915->current_program->on_hardware = 0;
1240 i915->current_program->params_uptodate = 0;
1241 }
1242
1243 i915->current_program = fp;
1244 }
1245
1246 if (!fp->translated)
1247 translate_program(fp);
1248
1249 FALLBACK(&i915->intel, I915_FALLBACK_PROGRAM, fp->error);
1250 }
1251
1252 void
1253 i915ValidateFragmentProgram(struct i915_context *i915)
1254 {
1255 GLcontext *ctx = &i915->intel.ctx;
1256 struct intel_context *intel = intel_context(ctx);
1257 TNLcontext *tnl = TNL_CONTEXT(ctx);
1258 struct vertex_buffer *VB = &tnl->vb;
1259
1260 struct i915_fragment_program *p =
1261 (struct i915_fragment_program *) ctx->FragmentProgram._Current;
1262
1263 const GLuint inputsRead = p->FragProg.Base.InputsRead;
1264 GLuint s4 = i915->state.Ctx[I915_CTXREG_LIS4] & ~S4_VFMT_MASK;
1265 GLuint s2 = S2_TEXCOORD_NONE;
1266 int i, offset = 0;
1267
1268 /* Important:
1269 */
1270 VB->AttribPtr[VERT_ATTRIB_POS] = VB->NdcPtr;
1271
1272 if (!p->translated)
1273 translate_program(p);
1274
1275 intel->vertex_attr_count = 0;
1276 intel->wpos_offset = 0;
1277 intel->wpos_size = 0;
1278 intel->coloroffset = 0;
1279 intel->specoffset = 0;
1280
1281 if (inputsRead & FRAG_BITS_TEX_ANY) {
1282 EMIT_ATTR(_TNL_ATTRIB_POS, EMIT_4F_VIEWPORT, S4_VFMT_XYZW, 16);
1283 }
1284 else {
1285 EMIT_ATTR(_TNL_ATTRIB_POS, EMIT_3F_VIEWPORT, S4_VFMT_XYZ, 12);
1286 }
1287
1288 if (inputsRead & FRAG_BIT_COL0) {
1289 intel->coloroffset = offset / 4;
1290 EMIT_ATTR(_TNL_ATTRIB_COLOR0, EMIT_4UB_4F_BGRA, S4_VFMT_COLOR, 4);
1291 }
1292
1293 if (inputsRead & FRAG_BIT_COL1) {
1294 intel->specoffset = offset / 4;
1295 EMIT_ATTR(_TNL_ATTRIB_COLOR1, EMIT_4UB_4F_BGRA, S4_VFMT_SPEC_FOG, 4);
1296 }
1297
1298 if ((inputsRead & FRAG_BIT_FOGC) || i915->vertex_fog != I915_FOG_NONE) {
1299 EMIT_ATTR(_TNL_ATTRIB_FOG, EMIT_1F, S4_VFMT_FOG_PARAM, 4);
1300 }
1301
1302 for (i = 0; i < p->ctx->Const.MaxTextureCoordUnits; i++) {
1303 if (inputsRead & FRAG_BIT_TEX(i)) {
1304 int sz = VB->AttribPtr[_TNL_ATTRIB_TEX0 + i]->size;
1305
1306 s2 &= ~S2_TEXCOORD_FMT(i, S2_TEXCOORD_FMT0_MASK);
1307 s2 |= S2_TEXCOORD_FMT(i, SZ_TO_HW(sz));
1308
1309 EMIT_ATTR(_TNL_ATTRIB_TEX0 + i, EMIT_SZ(sz), 0, sz * 4);
1310 }
1311 else if (inputsRead & FRAG_BIT_VAR(i)) {
1312 int sz = VB->AttribPtr[_TNL_ATTRIB_GENERIC0 + i]->size;
1313
1314 s2 &= ~S2_TEXCOORD_FMT(i, S2_TEXCOORD_FMT0_MASK);
1315 s2 |= S2_TEXCOORD_FMT(i, SZ_TO_HW(sz));
1316
1317 EMIT_ATTR(_TNL_ATTRIB_GENERIC0 + i, EMIT_SZ(sz), 0, sz * 4);
1318 }
1319 else if (i == p->wpos_tex) {
1320
1321 /* If WPOS is required, duplicate the XYZ position data in an
1322 * unused texture coordinate:
1323 */
1324 s2 &= ~S2_TEXCOORD_FMT(i, S2_TEXCOORD_FMT0_MASK);
1325 s2 |= S2_TEXCOORD_FMT(i, SZ_TO_HW(3));
1326
1327 intel->wpos_offset = offset;
1328 intel->wpos_size = 3 * sizeof(GLuint);
1329
1330 EMIT_PAD(intel->wpos_size);
1331 }
1332 }
1333
1334 if (s2 != i915->state.Ctx[I915_CTXREG_LIS2] ||
1335 s4 != i915->state.Ctx[I915_CTXREG_LIS4]) {
1336 int k;
1337
1338 I915_STATECHANGE(i915, I915_UPLOAD_CTX);
1339
1340 /* Must do this *after* statechange, so as not to affect
1341 * buffered vertices reliant on the old state:
1342 */
1343 intel->vertex_size = _tnl_install_attrs(&intel->ctx,
1344 intel->vertex_attrs,
1345 intel->vertex_attr_count,
1346 intel->ViewportMatrix.m, 0);
1347
1348 intel->vertex_size >>= 2;
1349
1350 i915->state.Ctx[I915_CTXREG_LIS2] = s2;
1351 i915->state.Ctx[I915_CTXREG_LIS4] = s4;
1352
1353 k = intel->vtbl.check_vertex_size(intel, intel->vertex_size);
1354 assert(k);
1355 }
1356
1357 if (!p->params_uptodate)
1358 track_params(p);
1359
1360 if (!p->on_hardware)
1361 i915_upload_program(i915, p);
1362 }
1363
1364 void
1365 i915InitFragProgFuncs(struct dd_function_table *functions)
1366 {
1367 functions->BindProgram = i915BindProgram;
1368 functions->NewProgram = i915NewProgram;
1369 functions->DeleteProgram = i915DeleteProgram;
1370 functions->IsProgramNative = i915IsProgramNative;
1371 functions->ProgramStringNotify = i915ProgramStringNotify;
1372 }