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Merge branch 'gallium-polygon-stipple'
[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 "program/prog_instruction.h"
33 #include "program/prog_parameter.h"
34 #include "program/program.h"
35 #include "program/programopt.h"
36 #include "program/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 case PROGRAM_OUTPUT:
147 switch (source->Index) {
148 case FRAG_RESULT_COLOR:
149 src = UREG(REG_TYPE_OC, 0);
150 break;
151 case FRAG_RESULT_DEPTH:
152 src = UREG(REG_TYPE_OD, 0);
153 break;
154 default:
155 i915_program_error(p, "Bad source->Index: %d", source->Index);
156 return 0;
157 }
158 break;
159
160 /* Various paramters and env values. All emitted to
161 * hardware as program constants.
162 */
163 case PROGRAM_LOCAL_PARAM:
164 src = i915_emit_param4fv(p, program->Base.LocalParams[source->Index]);
165 break;
166
167 case PROGRAM_ENV_PARAM:
168 src =
169 i915_emit_param4fv(p,
170 p->ctx->FragmentProgram.Parameters[source->
171 Index]);
172 break;
173
174 case PROGRAM_CONSTANT:
175 case PROGRAM_STATE_VAR:
176 case PROGRAM_NAMED_PARAM:
177 case PROGRAM_UNIFORM:
178 src =
179 i915_emit_param4fv(p,
180 program->Base.Parameters->ParameterValues[source->
181 Index]);
182 break;
183
184 default:
185 i915_program_error(p, "Bad source->File: %d", source->File);
186 return 0;
187 }
188
189 src = swizzle(src,
190 GET_SWZ(source->Swizzle, 0),
191 GET_SWZ(source->Swizzle, 1),
192 GET_SWZ(source->Swizzle, 2), GET_SWZ(source->Swizzle, 3));
193
194 if (source->Negate)
195 src = negate(src,
196 GET_BIT(source->Negate, 0),
197 GET_BIT(source->Negate, 1),
198 GET_BIT(source->Negate, 2),
199 GET_BIT(source->Negate, 3));
200
201 return src;
202 }
203
204
205 static GLuint
206 get_result_vector(struct i915_fragment_program *p,
207 const struct prog_instruction *inst)
208 {
209 switch (inst->DstReg.File) {
210 case PROGRAM_OUTPUT:
211 switch (inst->DstReg.Index) {
212 case FRAG_RESULT_COLOR:
213 case FRAG_RESULT_DATA0:
214 return UREG(REG_TYPE_OC, 0);
215 case FRAG_RESULT_DEPTH:
216 p->depth_written = 1;
217 return UREG(REG_TYPE_OD, 0);
218 default:
219 i915_program_error(p, "Bad inst->DstReg.Index: %d",
220 inst->DstReg.Index);
221 return 0;
222 }
223 case PROGRAM_TEMPORARY:
224 return UREG(REG_TYPE_R, inst->DstReg.Index);
225 default:
226 i915_program_error(p, "Bad inst->DstReg.File: %d", inst->DstReg.File);
227 return 0;
228 }
229 }
230
231 static GLuint
232 get_result_flags(const struct prog_instruction *inst)
233 {
234 GLuint flags = 0;
235
236 if (inst->SaturateMode == SATURATE_ZERO_ONE)
237 flags |= A0_DEST_SATURATE;
238 if (inst->DstReg.WriteMask & WRITEMASK_X)
239 flags |= A0_DEST_CHANNEL_X;
240 if (inst->DstReg.WriteMask & WRITEMASK_Y)
241 flags |= A0_DEST_CHANNEL_Y;
242 if (inst->DstReg.WriteMask & WRITEMASK_Z)
243 flags |= A0_DEST_CHANNEL_Z;
244 if (inst->DstReg.WriteMask & WRITEMASK_W)
245 flags |= A0_DEST_CHANNEL_W;
246
247 return flags;
248 }
249
250 static GLuint
251 translate_tex_src_target(struct i915_fragment_program *p, GLubyte bit)
252 {
253 switch (bit) {
254 case TEXTURE_1D_INDEX:
255 return D0_SAMPLE_TYPE_2D;
256 case TEXTURE_2D_INDEX:
257 return D0_SAMPLE_TYPE_2D;
258 case TEXTURE_RECT_INDEX:
259 return D0_SAMPLE_TYPE_2D;
260 case TEXTURE_3D_INDEX:
261 return D0_SAMPLE_TYPE_VOLUME;
262 case TEXTURE_CUBE_INDEX:
263 return D0_SAMPLE_TYPE_CUBE;
264 default:
265 i915_program_error(p, "TexSrcBit: %d", bit);
266 return 0;
267 }
268 }
269
270 #define EMIT_TEX( OP ) \
271 do { \
272 GLuint dim = translate_tex_src_target( p, inst->TexSrcTarget ); \
273 const struct gl_fragment_program *program = &p->FragProg; \
274 GLuint unit = program->Base.SamplerUnits[inst->TexSrcUnit]; \
275 GLuint sampler = i915_emit_decl(p, REG_TYPE_S, \
276 unit, dim); \
277 GLuint coord = src_vector( p, &inst->SrcReg[0], program); \
278 /* Texel lookup */ \
279 \
280 i915_emit_texld( p, get_live_regs(p, inst), \
281 get_result_vector( p, inst ), \
282 get_result_flags( inst ), \
283 sampler, \
284 coord, \
285 OP); \
286 } while (0)
287
288 #define EMIT_ARITH( OP, N ) \
289 do { \
290 i915_emit_arith( p, \
291 OP, \
292 get_result_vector( p, inst ), \
293 get_result_flags( inst ), 0, \
294 (N<1)?0:src_vector( p, &inst->SrcReg[0], program), \
295 (N<2)?0:src_vector( p, &inst->SrcReg[1], program), \
296 (N<3)?0:src_vector( p, &inst->SrcReg[2], program)); \
297 } while (0)
298
299 #define EMIT_1ARG_ARITH( OP ) EMIT_ARITH( OP, 1 )
300 #define EMIT_2ARG_ARITH( OP ) EMIT_ARITH( OP, 2 )
301 #define EMIT_3ARG_ARITH( OP ) EMIT_ARITH( OP, 3 )
302
303 /*
304 * TODO: consider moving this into core
305 */
306 static void calc_live_regs( struct i915_fragment_program *p )
307 {
308 const struct gl_fragment_program *program = &p->FragProg;
309 GLuint regsUsed = 0xffff0000;
310 uint8_t live_components[16] = { 0, };
311 GLint i;
312
313 for (i = program->Base.NumInstructions - 1; i >= 0; i--) {
314 struct prog_instruction *inst = &program->Base.Instructions[i];
315 int opArgs = _mesa_num_inst_src_regs(inst->Opcode);
316 int a;
317
318 /* Register is written to: unmark as live for this and preceeding ops */
319 if (inst->DstReg.File == PROGRAM_TEMPORARY) {
320 live_components[inst->DstReg.Index] &= ~inst->DstReg.WriteMask;
321 if (live_components[inst->DstReg.Index] == 0)
322 regsUsed &= ~(1 << inst->DstReg.Index);
323 }
324
325 for (a = 0; a < opArgs; a++) {
326 /* Register is read from: mark as live for this and preceeding ops */
327 if (inst->SrcReg[a].File == PROGRAM_TEMPORARY) {
328 unsigned c;
329
330 regsUsed |= 1 << inst->SrcReg[a].Index;
331
332 for (c = 0; c < 4; c++) {
333 const unsigned field = GET_SWZ(inst->SrcReg[a].Swizzle, c);
334
335 if (field <= SWIZZLE_W)
336 live_components[inst->SrcReg[a].Index] |= (1U << field);
337 }
338 }
339 }
340
341 p->usedRegs[i] = regsUsed;
342 }
343 }
344
345 static GLuint get_live_regs( struct i915_fragment_program *p,
346 const struct prog_instruction *inst )
347 {
348 const struct gl_fragment_program *program = &p->FragProg;
349 GLuint nr = inst - program->Base.Instructions;
350
351 return p->usedRegs[nr];
352 }
353
354
355 /* Possible concerns:
356 *
357 * SIN, COS -- could use another taylor step?
358 * LIT -- results seem a little different to sw mesa
359 * LOG -- different to mesa on negative numbers, but this is conformant.
360 *
361 * Parse failures -- Mesa doesn't currently give a good indication
362 * internally whether a particular program string parsed or not. This
363 * can lead to confusion -- hopefully we cope with it ok now.
364 *
365 */
366 static void
367 upload_program(struct i915_fragment_program *p)
368 {
369 const struct gl_fragment_program *program = &p->FragProg;
370 const struct prog_instruction *inst = program->Base.Instructions;
371
372 if (INTEL_DEBUG & DEBUG_WM)
373 _mesa_print_program(&program->Base);
374
375 /* Is this a parse-failed program? Ensure a valid program is
376 * loaded, as the flagging of an error isn't sufficient to stop
377 * this being uploaded to hardware.
378 */
379 if (inst[0].Opcode == OPCODE_END) {
380 GLuint tmp = i915_get_utemp(p);
381 i915_emit_arith(p,
382 A0_MOV,
383 UREG(REG_TYPE_OC, 0),
384 A0_DEST_CHANNEL_ALL, 0,
385 swizzle(tmp, ONE, ZERO, ONE, ONE), 0, 0);
386 return;
387 }
388
389 if (program->Base.NumInstructions > I915_MAX_INSN) {
390 i915_program_error(p, "Exceeded max instructions (%d out of %d)",
391 program->Base.NumInstructions, I915_MAX_INSN);
392 return;
393 }
394
395 /* Not always needed:
396 */
397 calc_live_regs(p);
398
399 while (1) {
400 GLuint src0, src1, src2, flags;
401 GLuint tmp = 0, dst, consts0 = 0, consts1 = 0;
402
403 switch (inst->Opcode) {
404 case OPCODE_ABS:
405 src0 = src_vector(p, &inst->SrcReg[0], program);
406 i915_emit_arith(p,
407 A0_MAX,
408 get_result_vector(p, inst),
409 get_result_flags(inst), 0,
410 src0, negate(src0, 1, 1, 1, 1), 0);
411 break;
412
413 case OPCODE_ADD:
414 EMIT_2ARG_ARITH(A0_ADD);
415 break;
416
417 case OPCODE_CMP:
418 src0 = src_vector(p, &inst->SrcReg[0], program);
419 src1 = src_vector(p, &inst->SrcReg[1], program);
420 src2 = src_vector(p, &inst->SrcReg[2], program);
421 i915_emit_arith(p, A0_CMP, get_result_vector(p, inst), get_result_flags(inst), 0, src0, src2, src1); /* NOTE: order of src2, src1 */
422 break;
423
424 case OPCODE_COS:
425 src0 = src_vector(p, &inst->SrcReg[0], program);
426 tmp = i915_get_utemp(p);
427 consts0 = i915_emit_const4fv(p, sin_quad_constants[0]);
428 consts1 = i915_emit_const4fv(p, sin_quad_constants[1]);
429
430 /* Reduce range from repeating about [-pi,pi] to [-1,1] */
431 i915_emit_arith(p,
432 A0_MAD,
433 tmp, A0_DEST_CHANNEL_X, 0,
434 src0,
435 swizzle(consts1, Z, ZERO, ZERO, ZERO), /* 1/(2pi) */
436 swizzle(consts0, W, ZERO, ZERO, ZERO)); /* .75 */
437
438 i915_emit_arith(p, A0_FRC, tmp, A0_DEST_CHANNEL_X, 0, tmp, 0, 0);
439
440 i915_emit_arith(p,
441 A0_MAD,
442 tmp, A0_DEST_CHANNEL_X, 0,
443 tmp,
444 swizzle(consts0, X, ZERO, ZERO, ZERO), /* 2 */
445 swizzle(consts0, Y, ZERO, ZERO, ZERO)); /* -1 */
446
447 /* Compute COS with the same calculation used for SIN, but a
448 * different source range has been mapped to [-1,1] this time.
449 */
450
451 /* tmp.y = abs(tmp.x); {x, abs(x), 0, 0} */
452 i915_emit_arith(p,
453 A0_MAX,
454 tmp, A0_DEST_CHANNEL_Y, 0,
455 swizzle(tmp, ZERO, X, ZERO, ZERO),
456 negate(swizzle(tmp, ZERO, X, ZERO, ZERO), 0, 1, 0, 0),
457 0);
458
459 /* tmp.y = tmp.y * tmp.x; {x, x * abs(x), 0, 0} */
460 i915_emit_arith(p,
461 A0_MUL,
462 tmp, A0_DEST_CHANNEL_Y, 0,
463 swizzle(tmp, ZERO, X, ZERO, ZERO),
464 tmp,
465 0);
466
467 /* tmp.x = tmp.xy DP sin_quad_constants[2].xy */
468 i915_emit_arith(p,
469 A0_DP3,
470 tmp, A0_DEST_CHANNEL_X, 0,
471 tmp,
472 swizzle(consts1, X, Y, ZERO, ZERO),
473 0);
474
475 /* tmp.x now contains a first approximation (y). Now, weight it
476 * against tmp.y**2 to get closer.
477 */
478 i915_emit_arith(p,
479 A0_MAX,
480 tmp, A0_DEST_CHANNEL_Y, 0,
481 swizzle(tmp, ZERO, X, ZERO, ZERO),
482 negate(swizzle(tmp, ZERO, X, ZERO, ZERO), 0, 1, 0, 0),
483 0);
484
485 /* tmp.y = tmp.x * tmp.y - tmp.x; {y, y * abs(y) - y, 0, 0} */
486 i915_emit_arith(p,
487 A0_MAD,
488 tmp, A0_DEST_CHANNEL_Y, 0,
489 swizzle(tmp, ZERO, X, ZERO, ZERO),
490 swizzle(tmp, ZERO, Y, ZERO, ZERO),
491 negate(swizzle(tmp, ZERO, X, ZERO, ZERO), 0, 1, 0, 0));
492
493 /* result = .2225 * tmp.y + tmp.x =.2225(y * abs(y) - y) + y= */
494 i915_emit_arith(p,
495 A0_MAD,
496 get_result_vector(p, inst),
497 get_result_flags(inst), 0,
498 swizzle(consts1, W, W, W, W),
499 swizzle(tmp, Y, Y, Y, Y),
500 swizzle(tmp, X, X, X, X));
501 break;
502
503 case OPCODE_DP2:
504 src0 = src_vector(p, &inst->SrcReg[0], program);
505 src1 = src_vector(p, &inst->SrcReg[1], program);
506 i915_emit_arith(p,
507 A0_DP3,
508 get_result_vector(p, inst),
509 get_result_flags(inst), 0,
510 swizzle(src0, X, Y, ZERO, ZERO),
511 swizzle(src1, X, Y, ZERO, ZERO),
512 0);
513 break;
514
515 case OPCODE_DP3:
516 EMIT_2ARG_ARITH(A0_DP3);
517 break;
518
519 case OPCODE_DP4:
520 EMIT_2ARG_ARITH(A0_DP4);
521 break;
522
523 case OPCODE_DPH:
524 src0 = src_vector(p, &inst->SrcReg[0], program);
525 src1 = src_vector(p, &inst->SrcReg[1], program);
526
527 i915_emit_arith(p,
528 A0_DP4,
529 get_result_vector(p, inst),
530 get_result_flags(inst), 0,
531 swizzle(src0, X, Y, Z, ONE), src1, 0);
532 break;
533
534 case OPCODE_DST:
535 src0 = src_vector(p, &inst->SrcReg[0], program);
536 src1 = src_vector(p, &inst->SrcReg[1], program);
537
538 /* result[0] = 1 * 1;
539 * result[1] = a[1] * b[1];
540 * result[2] = a[2] * 1;
541 * result[3] = 1 * b[3];
542 */
543 i915_emit_arith(p,
544 A0_MUL,
545 get_result_vector(p, inst),
546 get_result_flags(inst), 0,
547 swizzle(src0, ONE, Y, Z, ONE),
548 swizzle(src1, ONE, Y, ONE, W), 0);
549 break;
550
551 case OPCODE_EX2:
552 src0 = src_vector(p, &inst->SrcReg[0], program);
553
554 i915_emit_arith(p,
555 A0_EXP,
556 get_result_vector(p, inst),
557 get_result_flags(inst), 0,
558 swizzle(src0, X, X, X, X), 0, 0);
559 break;
560
561 case OPCODE_FLR:
562 EMIT_1ARG_ARITH(A0_FLR);
563 break;
564
565 case OPCODE_TRUNC:
566 EMIT_1ARG_ARITH(A0_TRC);
567 break;
568
569 case OPCODE_FRC:
570 EMIT_1ARG_ARITH(A0_FRC);
571 break;
572
573 case OPCODE_KIL:
574 src0 = src_vector(p, &inst->SrcReg[0], program);
575 tmp = i915_get_utemp(p);
576
577 i915_emit_texld(p, get_live_regs(p, inst),
578 tmp, A0_DEST_CHANNEL_ALL, /* use a dummy dest reg */
579 0, src0, T0_TEXKILL);
580 break;
581
582 case OPCODE_KIL_NV:
583 if (inst->DstReg.CondMask == COND_TR) {
584 tmp = i915_get_utemp(p);
585
586 /* The KIL instruction discards the fragment if any component of
587 * the source is < 0. Emit an immediate operand of {-1}.xywz.
588 */
589 i915_emit_texld(p, get_live_regs(p, inst),
590 tmp, A0_DEST_CHANNEL_ALL,
591 0, /* use a dummy dest reg */
592 negate(swizzle(tmp, ONE, ONE, ONE, ONE),
593 1, 1, 1, 1),
594 T0_TEXKILL);
595 } else {
596 p->error = 1;
597 i915_program_error(p, "Unsupported KIL_NV condition code: %d",
598 inst->DstReg.CondMask);
599 }
600 break;
601
602 case OPCODE_LG2:
603 src0 = src_vector(p, &inst->SrcReg[0], program);
604
605 i915_emit_arith(p,
606 A0_LOG,
607 get_result_vector(p, inst),
608 get_result_flags(inst), 0,
609 swizzle(src0, X, X, X, X), 0, 0);
610 break;
611
612 case OPCODE_LIT:
613 src0 = src_vector(p, &inst->SrcReg[0], program);
614 tmp = i915_get_utemp(p);
615
616 /* tmp = max( a.xyzw, a.00zw )
617 * XXX: Clamp tmp.w to -128..128
618 * tmp.y = log(tmp.y)
619 * tmp.y = tmp.w * tmp.y
620 * tmp.y = exp(tmp.y)
621 * result = cmp (a.11-x1, a.1x01, a.1xy1 )
622 */
623 i915_emit_arith(p, A0_MAX, tmp, A0_DEST_CHANNEL_ALL, 0,
624 src0, swizzle(src0, ZERO, ZERO, Z, W), 0);
625
626 i915_emit_arith(p, A0_LOG, tmp, A0_DEST_CHANNEL_Y, 0,
627 swizzle(tmp, Y, Y, Y, Y), 0, 0);
628
629 i915_emit_arith(p, A0_MUL, tmp, A0_DEST_CHANNEL_Y, 0,
630 swizzle(tmp, ZERO, Y, ZERO, ZERO),
631 swizzle(tmp, ZERO, W, ZERO, ZERO), 0);
632
633 i915_emit_arith(p, A0_EXP, tmp, A0_DEST_CHANNEL_Y, 0,
634 swizzle(tmp, Y, Y, Y, Y), 0, 0);
635
636 i915_emit_arith(p, A0_CMP,
637 get_result_vector(p, inst),
638 get_result_flags(inst), 0,
639 negate(swizzle(tmp, ONE, ONE, X, ONE), 0, 0, 1, 0),
640 swizzle(tmp, ONE, X, ZERO, ONE),
641 swizzle(tmp, ONE, X, Y, ONE));
642
643 break;
644
645 case OPCODE_LRP:
646 src0 = src_vector(p, &inst->SrcReg[0], program);
647 src1 = src_vector(p, &inst->SrcReg[1], program);
648 src2 = src_vector(p, &inst->SrcReg[2], program);
649 flags = get_result_flags(inst);
650 tmp = i915_get_utemp(p);
651
652 /* b*a + c*(1-a)
653 *
654 * b*a + c - ca
655 *
656 * tmp = b*a + c,
657 * result = (-c)*a + tmp
658 */
659 i915_emit_arith(p, A0_MAD, tmp,
660 flags & A0_DEST_CHANNEL_ALL, 0, src1, src0, src2);
661
662 i915_emit_arith(p, A0_MAD,
663 get_result_vector(p, inst),
664 flags, 0, negate(src2, 1, 1, 1, 1), src0, tmp);
665 break;
666
667 case OPCODE_MAD:
668 EMIT_3ARG_ARITH(A0_MAD);
669 break;
670
671 case OPCODE_MAX:
672 EMIT_2ARG_ARITH(A0_MAX);
673 break;
674
675 case OPCODE_MIN:
676 src0 = src_vector(p, &inst->SrcReg[0], program);
677 src1 = src_vector(p, &inst->SrcReg[1], program);
678 tmp = i915_get_utemp(p);
679 flags = get_result_flags(inst);
680
681 i915_emit_arith(p,
682 A0_MAX,
683 tmp, flags & A0_DEST_CHANNEL_ALL, 0,
684 negate(src0, 1, 1, 1, 1),
685 negate(src1, 1, 1, 1, 1), 0);
686
687 i915_emit_arith(p,
688 A0_MOV,
689 get_result_vector(p, inst),
690 flags, 0, negate(tmp, 1, 1, 1, 1), 0, 0);
691 break;
692
693 case OPCODE_MOV:
694 EMIT_1ARG_ARITH(A0_MOV);
695 break;
696
697 case OPCODE_MUL:
698 EMIT_2ARG_ARITH(A0_MUL);
699 break;
700
701 case OPCODE_POW:
702 src0 = src_vector(p, &inst->SrcReg[0], program);
703 src1 = src_vector(p, &inst->SrcReg[1], program);
704 tmp = i915_get_utemp(p);
705 flags = get_result_flags(inst);
706
707 /* XXX: masking on intermediate values, here and elsewhere.
708 */
709 i915_emit_arith(p,
710 A0_LOG,
711 tmp, A0_DEST_CHANNEL_X, 0,
712 swizzle(src0, X, X, X, X), 0, 0);
713
714 i915_emit_arith(p, A0_MUL, tmp, A0_DEST_CHANNEL_X, 0, tmp, src1, 0);
715
716
717 i915_emit_arith(p,
718 A0_EXP,
719 get_result_vector(p, inst),
720 flags, 0, swizzle(tmp, X, X, X, X), 0, 0);
721
722 break;
723
724 case OPCODE_RCP:
725 src0 = src_vector(p, &inst->SrcReg[0], program);
726
727 i915_emit_arith(p,
728 A0_RCP,
729 get_result_vector(p, inst),
730 get_result_flags(inst), 0,
731 swizzle(src0, X, X, X, X), 0, 0);
732 break;
733
734 case OPCODE_RSQ:
735
736 src0 = src_vector(p, &inst->SrcReg[0], program);
737
738 i915_emit_arith(p,
739 A0_RSQ,
740 get_result_vector(p, inst),
741 get_result_flags(inst), 0,
742 swizzle(src0, X, X, X, X), 0, 0);
743 break;
744
745 case OPCODE_SCS:
746 src0 = src_vector(p, &inst->SrcReg[0], program);
747 tmp = i915_get_utemp(p);
748
749 /*
750 * t0.xy = MUL x.xx11, x.x1111 ; x^2, x, 1, 1
751 * t0 = MUL t0.xyxy t0.xx11 ; x^4, x^3, x^2, x
752 * t1 = MUL t0.xyyw t0.yz11 ; x^7 x^5 x^3 x
753 * scs.x = DP4 t1, sin_constants
754 * t1 = MUL t0.xxz1 t0.z111 ; x^6 x^4 x^2 1
755 * scs.y = DP4 t1, cos_constants
756 */
757 i915_emit_arith(p,
758 A0_MUL,
759 tmp, A0_DEST_CHANNEL_XY, 0,
760 swizzle(src0, X, X, ONE, ONE),
761 swizzle(src0, X, ONE, ONE, ONE), 0);
762
763 i915_emit_arith(p,
764 A0_MUL,
765 tmp, A0_DEST_CHANNEL_ALL, 0,
766 swizzle(tmp, X, Y, X, Y),
767 swizzle(tmp, X, X, ONE, ONE), 0);
768
769 if (inst->DstReg.WriteMask & WRITEMASK_Y) {
770 GLuint tmp1;
771
772 if (inst->DstReg.WriteMask & WRITEMASK_X)
773 tmp1 = i915_get_utemp(p);
774 else
775 tmp1 = tmp;
776
777 i915_emit_arith(p,
778 A0_MUL,
779 tmp1, A0_DEST_CHANNEL_ALL, 0,
780 swizzle(tmp, X, Y, Y, W),
781 swizzle(tmp, X, Z, ONE, ONE), 0);
782
783 i915_emit_arith(p,
784 A0_DP4,
785 get_result_vector(p, inst),
786 A0_DEST_CHANNEL_Y, 0,
787 swizzle(tmp1, W, Z, Y, X),
788 i915_emit_const4fv(p, sin_constants), 0);
789 }
790
791 if (inst->DstReg.WriteMask & WRITEMASK_X) {
792 i915_emit_arith(p,
793 A0_MUL,
794 tmp, A0_DEST_CHANNEL_XYZ, 0,
795 swizzle(tmp, X, X, Z, ONE),
796 swizzle(tmp, Z, ONE, ONE, ONE), 0);
797
798 i915_emit_arith(p,
799 A0_DP4,
800 get_result_vector(p, inst),
801 A0_DEST_CHANNEL_X, 0,
802 swizzle(tmp, ONE, Z, Y, X),
803 i915_emit_const4fv(p, cos_constants), 0);
804 }
805 break;
806
807 case OPCODE_SEQ:
808 tmp = i915_get_utemp(p);
809 flags = get_result_flags(inst);
810 dst = get_result_vector(p, inst);
811
812 /* tmp = src1 >= src2 */
813 i915_emit_arith(p,
814 A0_SGE,
815 tmp,
816 flags, 0,
817 src_vector(p, &inst->SrcReg[0], program),
818 src_vector(p, &inst->SrcReg[1], program),
819 0);
820 /* dst = src1 <= src2 */
821 i915_emit_arith(p,
822 A0_SGE,
823 dst,
824 flags, 0,
825 negate(src_vector(p, &inst->SrcReg[0], program),
826 1, 1, 1, 1),
827 negate(src_vector(p, &inst->SrcReg[1], program),
828 1, 1, 1, 1),
829 0);
830 /* dst = tmp && dst */
831 i915_emit_arith(p,
832 A0_MUL,
833 dst,
834 flags, 0,
835 dst,
836 tmp,
837 0);
838 break;
839
840 case OPCODE_SIN:
841 src0 = src_vector(p, &inst->SrcReg[0], program);
842 tmp = i915_get_utemp(p);
843 consts0 = i915_emit_const4fv(p, sin_quad_constants[0]);
844 consts1 = i915_emit_const4fv(p, sin_quad_constants[1]);
845
846 /* Reduce range from repeating about [-pi,pi] to [-1,1] */
847 i915_emit_arith(p,
848 A0_MAD,
849 tmp, A0_DEST_CHANNEL_X, 0,
850 src0,
851 swizzle(consts1, Z, ZERO, ZERO, ZERO), /* 1/(2pi) */
852 swizzle(consts0, Z, ZERO, ZERO, ZERO)); /* .5 */
853
854 i915_emit_arith(p, A0_FRC, tmp, A0_DEST_CHANNEL_X, 0, tmp, 0, 0);
855
856 i915_emit_arith(p,
857 A0_MAD,
858 tmp, A0_DEST_CHANNEL_X, 0,
859 tmp,
860 swizzle(consts0, X, ZERO, ZERO, ZERO), /* 2 */
861 swizzle(consts0, Y, ZERO, ZERO, ZERO)); /* -1 */
862
863 /* Compute sin using a quadratic and quartic. It gives continuity
864 * that repeating the Taylor series lacks every 2*pi, and has
865 * reduced error.
866 *
867 * The idea was described at:
868 * http://www.devmaster.net/forums/showthread.php?t=5784
869 */
870
871 /* tmp.y = abs(tmp.x); {x, abs(x), 0, 0} */
872 i915_emit_arith(p,
873 A0_MAX,
874 tmp, A0_DEST_CHANNEL_Y, 0,
875 swizzle(tmp, ZERO, X, ZERO, ZERO),
876 negate(swizzle(tmp, ZERO, X, ZERO, ZERO), 0, 1, 0, 0),
877 0);
878
879 /* tmp.y = tmp.y * tmp.x; {x, x * abs(x), 0, 0} */
880 i915_emit_arith(p,
881 A0_MUL,
882 tmp, A0_DEST_CHANNEL_Y, 0,
883 swizzle(tmp, ZERO, X, ZERO, ZERO),
884 tmp,
885 0);
886
887 /* tmp.x = tmp.xy DP sin_quad_constants[2].xy */
888 i915_emit_arith(p,
889 A0_DP3,
890 tmp, A0_DEST_CHANNEL_X, 0,
891 tmp,
892 swizzle(consts1, X, Y, ZERO, ZERO),
893 0);
894
895 /* tmp.x now contains a first approximation (y). Now, weight it
896 * against tmp.y**2 to get closer.
897 */
898 i915_emit_arith(p,
899 A0_MAX,
900 tmp, A0_DEST_CHANNEL_Y, 0,
901 swizzle(tmp, ZERO, X, ZERO, ZERO),
902 negate(swizzle(tmp, ZERO, X, ZERO, ZERO), 0, 1, 0, 0),
903 0);
904
905 /* tmp.y = tmp.x * tmp.y - tmp.x; {y, y * abs(y) - y, 0, 0} */
906 i915_emit_arith(p,
907 A0_MAD,
908 tmp, A0_DEST_CHANNEL_Y, 0,
909 swizzle(tmp, ZERO, X, ZERO, ZERO),
910 swizzle(tmp, ZERO, Y, ZERO, ZERO),
911 negate(swizzle(tmp, ZERO, X, ZERO, ZERO), 0, 1, 0, 0));
912
913 /* result = .2225 * tmp.y + tmp.x =.2225(y * abs(y) - y) + y= */
914 i915_emit_arith(p,
915 A0_MAD,
916 get_result_vector(p, inst),
917 get_result_flags(inst), 0,
918 swizzle(consts1, W, W, W, W),
919 swizzle(tmp, Y, Y, Y, Y),
920 swizzle(tmp, X, X, X, X));
921
922 break;
923
924 case OPCODE_SGE:
925 EMIT_2ARG_ARITH(A0_SGE);
926 break;
927
928 case OPCODE_SGT:
929 i915_emit_arith(p,
930 A0_SLT,
931 get_result_vector( p, inst ),
932 get_result_flags( inst ), 0,
933 negate(src_vector( p, &inst->SrcReg[0], program),
934 1, 1, 1, 1),
935 negate(src_vector( p, &inst->SrcReg[1], program),
936 1, 1, 1, 1),
937 0);
938 break;
939
940 case OPCODE_SLE:
941 i915_emit_arith(p,
942 A0_SGE,
943 get_result_vector( p, inst ),
944 get_result_flags( inst ), 0,
945 negate(src_vector( p, &inst->SrcReg[0], program),
946 1, 1, 1, 1),
947 negate(src_vector( p, &inst->SrcReg[1], program),
948 1, 1, 1, 1),
949 0);
950 break;
951
952 case OPCODE_SLT:
953 EMIT_2ARG_ARITH(A0_SLT);
954 break;
955
956 case OPCODE_SNE:
957 tmp = i915_get_utemp(p);
958 flags = get_result_flags(inst);
959 dst = get_result_vector(p, inst);
960
961 /* tmp = src1 < src2 */
962 i915_emit_arith(p,
963 A0_SLT,
964 tmp,
965 flags, 0,
966 src_vector(p, &inst->SrcReg[0], program),
967 src_vector(p, &inst->SrcReg[1], program),
968 0);
969 /* dst = src1 > src2 */
970 i915_emit_arith(p,
971 A0_SLT,
972 dst,
973 flags, 0,
974 negate(src_vector(p, &inst->SrcReg[0], program),
975 1, 1, 1, 1),
976 negate(src_vector(p, &inst->SrcReg[1], program),
977 1, 1, 1, 1),
978 0);
979 /* dst = tmp || dst */
980 i915_emit_arith(p,
981 A0_ADD,
982 dst,
983 flags | A0_DEST_SATURATE, 0,
984 dst,
985 tmp,
986 0);
987 break;
988
989 case OPCODE_SSG:
990 dst = get_result_vector(p, inst);
991 flags = get_result_flags(inst);
992 src0 = src_vector(p, &inst->SrcReg[0], program);
993 tmp = i915_get_utemp(p);
994
995 /* tmp = (src < 0.0) */
996 i915_emit_arith(p,
997 A0_SLT,
998 tmp,
999 flags, 0,
1000 src0,
1001 swizzle(src0, ZERO, ZERO, ZERO, ZERO),
1002 0);
1003
1004 /* dst = (0.0 < src) */
1005 i915_emit_arith(p,
1006 A0_SLT,
1007 dst,
1008 flags, 0,
1009 swizzle(src0, ZERO, ZERO, ZERO, ZERO),
1010 src0,
1011 0);
1012
1013 /* dst = (src > 0.0) - (src < 0.0) */
1014 i915_emit_arith(p,
1015 A0_ADD,
1016 dst,
1017 flags, 0,
1018 dst,
1019 negate(tmp, 1, 1, 1, 1),
1020 0);
1021
1022 break;
1023
1024 case OPCODE_SUB:
1025 src0 = src_vector(p, &inst->SrcReg[0], program);
1026 src1 = src_vector(p, &inst->SrcReg[1], program);
1027
1028 i915_emit_arith(p,
1029 A0_ADD,
1030 get_result_vector(p, inst),
1031 get_result_flags(inst), 0,
1032 src0, negate(src1, 1, 1, 1, 1), 0);
1033 break;
1034
1035 case OPCODE_SWZ:
1036 EMIT_1ARG_ARITH(A0_MOV); /* extended swizzle handled natively */
1037 break;
1038
1039 case OPCODE_TEX:
1040 EMIT_TEX(T0_TEXLD);
1041 break;
1042
1043 case OPCODE_TXB:
1044 EMIT_TEX(T0_TEXLDB);
1045 break;
1046
1047 case OPCODE_TXP:
1048 EMIT_TEX(T0_TEXLDP);
1049 break;
1050
1051 case OPCODE_XPD:
1052 /* Cross product:
1053 * result.x = src0.y * src1.z - src0.z * src1.y;
1054 * result.y = src0.z * src1.x - src0.x * src1.z;
1055 * result.z = src0.x * src1.y - src0.y * src1.x;
1056 * result.w = undef;
1057 */
1058 src0 = src_vector(p, &inst->SrcReg[0], program);
1059 src1 = src_vector(p, &inst->SrcReg[1], program);
1060 tmp = i915_get_utemp(p);
1061
1062 i915_emit_arith(p,
1063 A0_MUL,
1064 tmp, A0_DEST_CHANNEL_ALL, 0,
1065 swizzle(src0, Z, X, Y, ONE),
1066 swizzle(src1, Y, Z, X, ONE), 0);
1067
1068 i915_emit_arith(p,
1069 A0_MAD,
1070 get_result_vector(p, inst),
1071 get_result_flags(inst), 0,
1072 swizzle(src0, Y, Z, X, ONE),
1073 swizzle(src1, Z, X, Y, ONE),
1074 negate(tmp, 1, 1, 1, 0));
1075 break;
1076
1077 case OPCODE_END:
1078 return;
1079
1080 case OPCODE_BGNLOOP:
1081 case OPCODE_BGNSUB:
1082 case OPCODE_BRA:
1083 case OPCODE_BRK:
1084 case OPCODE_CAL:
1085 case OPCODE_CONT:
1086 case OPCODE_DDX:
1087 case OPCODE_DDY:
1088 case OPCODE_ELSE:
1089 case OPCODE_ENDIF:
1090 case OPCODE_ENDLOOP:
1091 case OPCODE_ENDSUB:
1092 case OPCODE_IF:
1093 case OPCODE_RET:
1094 p->error = 1;
1095 i915_program_error(p, "Unsupported opcode: %s",
1096 _mesa_opcode_string(inst->Opcode));
1097 return;
1098
1099 case OPCODE_EXP:
1100 case OPCODE_LOG:
1101 /* These opcodes are claimed as GLSL, NV_vp, and ARB_vp in
1102 * prog_instruction.h, but apparently GLSL doesn't ever emit them.
1103 * Instead, it translates to EX2 or LG2.
1104 */
1105 case OPCODE_TXD:
1106 case OPCODE_TXL:
1107 /* These opcodes are claimed by GLSL in prog_instruction.h, but
1108 * only NV_vp/fp appears to emit them.
1109 */
1110 default:
1111 i915_program_error(p, "bad opcode: %s",
1112 _mesa_opcode_string(inst->Opcode));
1113 return;
1114 }
1115
1116 inst++;
1117 i915_release_utemps(p);
1118 }
1119 }
1120
1121 /* Rather than trying to intercept and jiggle depth writes during
1122 * emit, just move the value into its correct position at the end of
1123 * the program:
1124 */
1125 static void
1126 fixup_depth_write(struct i915_fragment_program *p)
1127 {
1128 if (p->depth_written) {
1129 GLuint depth = UREG(REG_TYPE_OD, 0);
1130
1131 i915_emit_arith(p,
1132 A0_MOV,
1133 depth, A0_DEST_CHANNEL_W, 0,
1134 swizzle(depth, X, Y, Z, Z), 0, 0);
1135 }
1136 }
1137
1138
1139 static void
1140 check_wpos(struct i915_fragment_program *p)
1141 {
1142 GLuint inputs = p->FragProg.Base.InputsRead;
1143 GLint i;
1144
1145 p->wpos_tex = -1;
1146
1147 for (i = 0; i < p->ctx->Const.MaxTextureCoordUnits; i++) {
1148 if (inputs & (FRAG_BIT_TEX(i) | FRAG_BIT_VAR(i)))
1149 continue;
1150 else if (inputs & FRAG_BIT_WPOS) {
1151 p->wpos_tex = i;
1152 inputs &= ~FRAG_BIT_WPOS;
1153 }
1154 }
1155
1156 if (inputs & FRAG_BIT_WPOS) {
1157 i915_program_error(p, "No free texcoord for wpos value");
1158 }
1159 }
1160
1161
1162 static void
1163 translate_program(struct i915_fragment_program *p)
1164 {
1165 struct i915_context *i915 = I915_CONTEXT(p->ctx);
1166
1167 if (INTEL_DEBUG & DEBUG_WM) {
1168 printf("fp:\n");
1169 _mesa_print_program(&p->FragProg.Base);
1170 printf("\n");
1171 }
1172
1173 i915_init_program(i915, p);
1174 check_wpos(p);
1175 upload_program(p);
1176 fixup_depth_write(p);
1177 i915_fini_program(p);
1178
1179 p->translated = 1;
1180 }
1181
1182
1183 static void
1184 track_params(struct i915_fragment_program *p)
1185 {
1186 GLint i;
1187
1188 if (p->nr_params)
1189 _mesa_load_state_parameters(p->ctx, p->FragProg.Base.Parameters);
1190
1191 for (i = 0; i < p->nr_params; i++) {
1192 GLint reg = p->param[i].reg;
1193 COPY_4V(p->constant[reg], p->param[i].values);
1194 }
1195
1196 p->params_uptodate = 1;
1197 p->on_hardware = 0; /* overkill */
1198 }
1199
1200
1201 static void
1202 i915BindProgram(struct gl_context * ctx, GLenum target, struct gl_program *prog)
1203 {
1204 if (target == GL_FRAGMENT_PROGRAM_ARB) {
1205 struct i915_context *i915 = I915_CONTEXT(ctx);
1206 struct i915_fragment_program *p = (struct i915_fragment_program *) prog;
1207
1208 if (i915->current_program == p)
1209 return;
1210
1211 if (i915->current_program) {
1212 i915->current_program->on_hardware = 0;
1213 i915->current_program->params_uptodate = 0;
1214 }
1215
1216 i915->current_program = p;
1217
1218 assert(p->on_hardware == 0);
1219 assert(p->params_uptodate == 0);
1220
1221 }
1222 }
1223
1224 static struct gl_program *
1225 i915NewProgram(struct gl_context * ctx, GLenum target, GLuint id)
1226 {
1227 switch (target) {
1228 case GL_VERTEX_PROGRAM_ARB:
1229 return _mesa_init_vertex_program(ctx, CALLOC_STRUCT(gl_vertex_program),
1230 target, id);
1231
1232 case GL_FRAGMENT_PROGRAM_ARB:{
1233 struct i915_fragment_program *prog =
1234 CALLOC_STRUCT(i915_fragment_program);
1235 if (prog) {
1236 i915_init_program(I915_CONTEXT(ctx), prog);
1237
1238 return _mesa_init_fragment_program(ctx, &prog->FragProg,
1239 target, id);
1240 }
1241 else
1242 return NULL;
1243 }
1244
1245 default:
1246 /* Just fallback:
1247 */
1248 return _mesa_new_program(ctx, target, id);
1249 }
1250 }
1251
1252 static void
1253 i915DeleteProgram(struct gl_context * ctx, struct gl_program *prog)
1254 {
1255 if (prog->Target == GL_FRAGMENT_PROGRAM_ARB) {
1256 struct i915_context *i915 = I915_CONTEXT(ctx);
1257 struct i915_fragment_program *p = (struct i915_fragment_program *) prog;
1258
1259 if (i915->current_program == p)
1260 i915->current_program = 0;
1261 }
1262
1263 _mesa_delete_program(ctx, prog);
1264 }
1265
1266
1267 static GLboolean
1268 i915IsProgramNative(struct gl_context * ctx, GLenum target, struct gl_program *prog)
1269 {
1270 if (target == GL_FRAGMENT_PROGRAM_ARB) {
1271 struct i915_fragment_program *p = (struct i915_fragment_program *) prog;
1272
1273 if (!p->translated)
1274 translate_program(p);
1275
1276 return !p->error;
1277 }
1278 else
1279 return GL_TRUE;
1280 }
1281
1282 static GLboolean
1283 i915ProgramStringNotify(struct gl_context * ctx,
1284 GLenum target, struct gl_program *prog)
1285 {
1286 if (target == GL_FRAGMENT_PROGRAM_ARB) {
1287 struct i915_fragment_program *p = (struct i915_fragment_program *) prog;
1288 p->translated = 0;
1289 }
1290
1291 (void) _tnl_program_string(ctx, target, prog);
1292
1293 /* XXX check if program is legal, within limits */
1294 return GL_TRUE;
1295 }
1296
1297 void
1298 i915_update_program(struct gl_context *ctx)
1299 {
1300 struct intel_context *intel = intel_context(ctx);
1301 struct i915_context *i915 = i915_context(&intel->ctx);
1302 struct i915_fragment_program *fp =
1303 (struct i915_fragment_program *) ctx->FragmentProgram._Current;
1304
1305 if (i915->current_program != fp) {
1306 if (i915->current_program) {
1307 i915->current_program->on_hardware = 0;
1308 i915->current_program->params_uptodate = 0;
1309 }
1310
1311 i915->current_program = fp;
1312 }
1313
1314 if (!fp->translated)
1315 translate_program(fp);
1316
1317 FALLBACK(&i915->intel, I915_FALLBACK_PROGRAM, fp->error);
1318 }
1319
1320 void
1321 i915ValidateFragmentProgram(struct i915_context *i915)
1322 {
1323 struct gl_context *ctx = &i915->intel.ctx;
1324 struct intel_context *intel = intel_context(ctx);
1325 TNLcontext *tnl = TNL_CONTEXT(ctx);
1326 struct vertex_buffer *VB = &tnl->vb;
1327
1328 struct i915_fragment_program *p =
1329 (struct i915_fragment_program *) ctx->FragmentProgram._Current;
1330
1331 const GLuint inputsRead = p->FragProg.Base.InputsRead;
1332 GLuint s4 = i915->state.Ctx[I915_CTXREG_LIS4] & ~S4_VFMT_MASK;
1333 GLuint s2 = S2_TEXCOORD_NONE;
1334 int i, offset = 0;
1335
1336 /* Important:
1337 */
1338 VB->AttribPtr[VERT_ATTRIB_POS] = VB->NdcPtr;
1339
1340 if (!p->translated)
1341 translate_program(p);
1342
1343 intel->vertex_attr_count = 0;
1344 intel->wpos_offset = 0;
1345 intel->coloroffset = 0;
1346 intel->specoffset = 0;
1347
1348 if (inputsRead & FRAG_BITS_TEX_ANY || p->wpos_tex != -1) {
1349 EMIT_ATTR(_TNL_ATTRIB_POS, EMIT_4F_VIEWPORT, S4_VFMT_XYZW, 16);
1350 }
1351 else {
1352 EMIT_ATTR(_TNL_ATTRIB_POS, EMIT_3F_VIEWPORT, S4_VFMT_XYZ, 12);
1353 }
1354
1355 if (inputsRead & FRAG_BIT_COL0) {
1356 intel->coloroffset = offset / 4;
1357 EMIT_ATTR(_TNL_ATTRIB_COLOR0, EMIT_4UB_4F_BGRA, S4_VFMT_COLOR, 4);
1358 }
1359
1360 if (inputsRead & FRAG_BIT_COL1) {
1361 intel->specoffset = offset / 4;
1362 EMIT_ATTR(_TNL_ATTRIB_COLOR1, EMIT_4UB_4F_BGRA, S4_VFMT_SPEC_FOG, 4);
1363 }
1364
1365 if ((inputsRead & FRAG_BIT_FOGC)) {
1366 EMIT_ATTR(_TNL_ATTRIB_FOG, EMIT_1F, S4_VFMT_FOG_PARAM, 4);
1367 }
1368
1369 for (i = 0; i < p->ctx->Const.MaxTextureCoordUnits; i++) {
1370 if (inputsRead & FRAG_BIT_TEX(i)) {
1371 int sz = VB->AttribPtr[_TNL_ATTRIB_TEX0 + i]->size;
1372
1373 s2 &= ~S2_TEXCOORD_FMT(i, S2_TEXCOORD_FMT0_MASK);
1374 s2 |= S2_TEXCOORD_FMT(i, SZ_TO_HW(sz));
1375
1376 EMIT_ATTR(_TNL_ATTRIB_TEX0 + i, EMIT_SZ(sz), 0, sz * 4);
1377 }
1378 else if (inputsRead & FRAG_BIT_VAR(i)) {
1379 int sz = VB->AttribPtr[_TNL_ATTRIB_GENERIC0 + i]->size;
1380
1381 s2 &= ~S2_TEXCOORD_FMT(i, S2_TEXCOORD_FMT0_MASK);
1382 s2 |= S2_TEXCOORD_FMT(i, SZ_TO_HW(sz));
1383
1384 EMIT_ATTR(_TNL_ATTRIB_GENERIC0 + i, EMIT_SZ(sz), 0, sz * 4);
1385 }
1386 else if (i == p->wpos_tex) {
1387 int wpos_size = 4 * sizeof(float);
1388 /* If WPOS is required, duplicate the XYZ position data in an
1389 * unused texture coordinate:
1390 */
1391 s2 &= ~S2_TEXCOORD_FMT(i, S2_TEXCOORD_FMT0_MASK);
1392 s2 |= S2_TEXCOORD_FMT(i, SZ_TO_HW(wpos_size));
1393
1394 intel->wpos_offset = offset;
1395 EMIT_PAD(wpos_size);
1396 }
1397 }
1398
1399 if (s2 != i915->state.Ctx[I915_CTXREG_LIS2] ||
1400 s4 != i915->state.Ctx[I915_CTXREG_LIS4]) {
1401 int k;
1402
1403 I915_STATECHANGE(i915, I915_UPLOAD_CTX);
1404
1405 /* Must do this *after* statechange, so as not to affect
1406 * buffered vertices reliant on the old state:
1407 */
1408 intel->vertex_size = _tnl_install_attrs(&intel->ctx,
1409 intel->vertex_attrs,
1410 intel->vertex_attr_count,
1411 intel->ViewportMatrix.m, 0);
1412
1413 assert(intel->prim.current_offset == intel->prim.start_offset);
1414 intel->prim.start_offset = (intel->prim.current_offset + intel->vertex_size-1) / intel->vertex_size * intel->vertex_size;
1415 intel->prim.current_offset = intel->prim.start_offset;
1416
1417 intel->vertex_size >>= 2;
1418
1419 i915->state.Ctx[I915_CTXREG_LIS2] = s2;
1420 i915->state.Ctx[I915_CTXREG_LIS4] = s4;
1421
1422 k = intel->vtbl.check_vertex_size(intel, intel->vertex_size);
1423 assert(k);
1424 }
1425
1426 if (!p->params_uptodate)
1427 track_params(p);
1428
1429 if (!p->on_hardware)
1430 i915_upload_program(i915, p);
1431
1432 if (INTEL_DEBUG & DEBUG_WM) {
1433 printf("i915:\n");
1434 i915_disassemble_program(i915->state.Program, i915->state.ProgramSize);
1435 }
1436 }
1437
1438 void
1439 i915InitFragProgFuncs(struct dd_function_table *functions)
1440 {
1441 functions->BindProgram = i915BindProgram;
1442 functions->NewProgram = i915NewProgram;
1443 functions->DeleteProgram = i915DeleteProgram;
1444 functions->IsProgramNative = i915IsProgramNative;
1445 functions->ProgramStringNotify = i915ProgramStringNotify;
1446 }