1 /**************************************************************************
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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.
26 **************************************************************************/
28 #include "main/glheader.h"
29 #include "main/macros.h"
30 #include "main/enums.h"
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"
39 #include "tnl/t_context.h"
41 #include "intel_batchbuffer.h"
44 #include "i915_context.h"
45 #include "i915_program.h"
47 static const GLfloat sin_quad_constants
[2][4] = {
62 static const GLfloat sin_constants
[4] = { 1.0,
64 1.0 / (5 * 4 * 3 * 2 * 1),
65 -1.0 / (7 * 6 * 5 * 4 * 3 * 2 * 1)
68 /* 1, -1/2!, 1/4!, -1/6! */
69 static const GLfloat cos_constants
[4] = { 1.0,
71 1.0 / (4 * 3 * 2 * 1),
72 -1.0 / (6 * 5 * 4 * 3 * 2 * 1)
76 * Retrieve a ureg for the given source register. Will emit
77 * constants, apply swizzling and negation as needed.
80 src_vector(struct i915_fragment_program
*p
,
81 const struct prog_src_register
*source
,
82 const struct gl_fragment_program
*program
)
86 switch (source
->File
) {
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
);
96 src
= UREG(REG_TYPE_R
, source
->Index
);
99 switch (source
->Index
) {
100 case FRAG_ATTRIB_WPOS
:
101 src
= i915_emit_decl(p
, REG_TYPE_T
, p
->wpos_tex
, D0_CHANNEL_ALL
);
103 case FRAG_ATTRIB_COL0
:
104 src
= i915_emit_decl(p
, REG_TYPE_T
, T_DIFFUSE
, D0_CHANNEL_ALL
);
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
);
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
);
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
),
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
),
141 i915_program_error(p
, "Bad source->Index: %d", source
->Index
);
147 switch (source
->Index
) {
148 case FRAG_RESULT_COLOR
:
149 src
= UREG(REG_TYPE_OC
, 0);
151 case FRAG_RESULT_DEPTH
:
152 src
= UREG(REG_TYPE_OD
, 0);
155 i915_program_error(p
, "Bad source->Index: %d", source
->Index
);
160 /* Various paramters and env values. All emitted to
161 * hardware as program constants.
163 case PROGRAM_LOCAL_PARAM
:
164 src
= i915_emit_param4fv(p
, program
->Base
.LocalParams
[source
->Index
]);
167 case PROGRAM_ENV_PARAM
:
169 i915_emit_param4fv(p
,
170 p
->ctx
->FragmentProgram
.Parameters
[source
->
174 case PROGRAM_CONSTANT
:
175 case PROGRAM_STATE_VAR
:
176 case PROGRAM_NAMED_PARAM
:
177 case PROGRAM_UNIFORM
:
178 src
= i915_emit_param4fv(p
,
179 &program
->Base
.Parameters
->ParameterValues
[source
->Index
][0].f
);
183 i915_program_error(p
, "Bad source->File: %d", source
->File
);
188 GET_SWZ(source
->Swizzle
, 0),
189 GET_SWZ(source
->Swizzle
, 1),
190 GET_SWZ(source
->Swizzle
, 2), GET_SWZ(source
->Swizzle
, 3));
194 GET_BIT(source
->Negate
, 0),
195 GET_BIT(source
->Negate
, 1),
196 GET_BIT(source
->Negate
, 2),
197 GET_BIT(source
->Negate
, 3));
204 get_result_vector(struct i915_fragment_program
*p
,
205 const struct prog_instruction
*inst
)
207 switch (inst
->DstReg
.File
) {
209 switch (inst
->DstReg
.Index
) {
210 case FRAG_RESULT_COLOR
:
211 case FRAG_RESULT_DATA0
:
212 return UREG(REG_TYPE_OC
, 0);
213 case FRAG_RESULT_DEPTH
:
214 p
->depth_written
= 1;
215 return UREG(REG_TYPE_OD
, 0);
217 i915_program_error(p
, "Bad inst->DstReg.Index: %d",
221 case PROGRAM_TEMPORARY
:
222 return UREG(REG_TYPE_R
, inst
->DstReg
.Index
);
224 i915_program_error(p
, "Bad inst->DstReg.File: %d", inst
->DstReg
.File
);
230 get_result_flags(const struct prog_instruction
*inst
)
234 if (inst
->SaturateMode
== SATURATE_ZERO_ONE
)
235 flags
|= A0_DEST_SATURATE
;
236 if (inst
->DstReg
.WriteMask
& WRITEMASK_X
)
237 flags
|= A0_DEST_CHANNEL_X
;
238 if (inst
->DstReg
.WriteMask
& WRITEMASK_Y
)
239 flags
|= A0_DEST_CHANNEL_Y
;
240 if (inst
->DstReg
.WriteMask
& WRITEMASK_Z
)
241 flags
|= A0_DEST_CHANNEL_Z
;
242 if (inst
->DstReg
.WriteMask
& WRITEMASK_W
)
243 flags
|= A0_DEST_CHANNEL_W
;
249 translate_tex_src_target(struct i915_fragment_program
*p
, GLubyte bit
)
252 case TEXTURE_1D_INDEX
:
253 return D0_SAMPLE_TYPE_2D
;
254 case TEXTURE_2D_INDEX
:
255 return D0_SAMPLE_TYPE_2D
;
256 case TEXTURE_RECT_INDEX
:
257 return D0_SAMPLE_TYPE_2D
;
258 case TEXTURE_3D_INDEX
:
259 return D0_SAMPLE_TYPE_VOLUME
;
260 case TEXTURE_CUBE_INDEX
:
261 return D0_SAMPLE_TYPE_CUBE
;
263 i915_program_error(p
, "TexSrcBit: %d", bit
);
268 #define EMIT_TEX( OP ) \
270 GLuint dim = translate_tex_src_target( p, inst->TexSrcTarget ); \
271 const struct gl_fragment_program *program = &p->FragProg; \
272 GLuint unit = program->Base.SamplerUnits[inst->TexSrcUnit]; \
273 GLuint sampler = i915_emit_decl(p, REG_TYPE_S, \
275 GLuint coord = src_vector( p, &inst->SrcReg[0], program); \
278 i915_emit_texld( p, get_live_regs(p, inst), \
279 get_result_vector( p, inst ), \
280 get_result_flags( inst ), \
286 #define EMIT_ARITH( OP, N ) \
288 i915_emit_arith( p, \
290 get_result_vector( p, inst ), \
291 get_result_flags( inst ), 0, \
292 (N<1)?0:src_vector( p, &inst->SrcReg[0], program), \
293 (N<2)?0:src_vector( p, &inst->SrcReg[1], program), \
294 (N<3)?0:src_vector( p, &inst->SrcReg[2], program)); \
297 #define EMIT_1ARG_ARITH( OP ) EMIT_ARITH( OP, 1 )
298 #define EMIT_2ARG_ARITH( OP ) EMIT_ARITH( OP, 2 )
299 #define EMIT_3ARG_ARITH( OP ) EMIT_ARITH( OP, 3 )
302 * TODO: consider moving this into core
304 static bool calc_live_regs( struct i915_fragment_program
*p
)
306 const struct gl_fragment_program
*program
= &p
->FragProg
;
307 GLuint regsUsed
= ~((1 << I915_MAX_TEMPORARY
) - 1);
308 uint8_t live_components
[I915_MAX_TEMPORARY
] = { 0, };
311 for (i
= program
->Base
.NumInstructions
- 1; i
>= 0; i
--) {
312 struct prog_instruction
*inst
= &program
->Base
.Instructions
[i
];
313 int opArgs
= _mesa_num_inst_src_regs(inst
->Opcode
);
316 /* Register is written to: unmark as live for this and preceeding ops */
317 if (inst
->DstReg
.File
== PROGRAM_TEMPORARY
) {
318 if (inst
->DstReg
.Index
>= I915_MAX_TEMPORARY
)
321 live_components
[inst
->DstReg
.Index
] &= ~inst
->DstReg
.WriteMask
;
322 if (live_components
[inst
->DstReg
.Index
] == 0)
323 regsUsed
&= ~(1 << inst
->DstReg
.Index
);
326 for (a
= 0; a
< opArgs
; a
++) {
327 /* Register is read from: mark as live for this and preceeding ops */
328 if (inst
->SrcReg
[a
].File
== PROGRAM_TEMPORARY
) {
331 if (inst
->SrcReg
[a
].Index
>= I915_MAX_TEMPORARY
)
334 regsUsed
|= 1 << inst
->SrcReg
[a
].Index
;
336 for (c
= 0; c
< 4; c
++) {
337 const unsigned field
= GET_SWZ(inst
->SrcReg
[a
].Swizzle
, c
);
339 if (field
<= SWIZZLE_W
)
340 live_components
[inst
->SrcReg
[a
].Index
] |= (1U << field
);
345 p
->usedRegs
[i
] = regsUsed
;
351 static GLuint
get_live_regs( struct i915_fragment_program
*p
,
352 const struct prog_instruction
*inst
)
354 const struct gl_fragment_program
*program
= &p
->FragProg
;
355 GLuint nr
= inst
- program
->Base
.Instructions
;
357 return p
->usedRegs
[nr
];
361 /* Possible concerns:
363 * SIN, COS -- could use another taylor step?
364 * LIT -- results seem a little different to sw mesa
365 * LOG -- different to mesa on negative numbers, but this is conformant.
367 * Parse failures -- Mesa doesn't currently give a good indication
368 * internally whether a particular program string parsed or not. This
369 * can lead to confusion -- hopefully we cope with it ok now.
373 upload_program(struct i915_fragment_program
*p
)
375 const struct gl_fragment_program
*program
= &p
->FragProg
;
376 const struct prog_instruction
*inst
= program
->Base
.Instructions
;
378 if (INTEL_DEBUG
& DEBUG_WM
)
379 _mesa_print_program(&program
->Base
);
381 /* Is this a parse-failed program? Ensure a valid program is
382 * loaded, as the flagging of an error isn't sufficient to stop
383 * this being uploaded to hardware.
385 if (inst
[0].Opcode
== OPCODE_END
) {
386 GLuint tmp
= i915_get_utemp(p
);
389 UREG(REG_TYPE_OC
, 0),
390 A0_DEST_CHANNEL_ALL
, 0,
391 swizzle(tmp
, ONE
, ZERO
, ONE
, ONE
), 0, 0);
395 if (program
->Base
.NumInstructions
> I915_MAX_INSN
) {
396 i915_program_error(p
, "Exceeded max instructions (%d out of %d)",
397 program
->Base
.NumInstructions
, I915_MAX_INSN
);
401 /* Not always needed:
403 if (!calc_live_regs(p
)) {
404 i915_program_error(p
, "Could not allocate registers");
409 GLuint src0
, src1
, src2
, flags
;
410 GLuint tmp
= 0, dst
, consts0
= 0, consts1
= 0;
412 switch (inst
->Opcode
) {
414 src0
= src_vector(p
, &inst
->SrcReg
[0], program
);
417 get_result_vector(p
, inst
),
418 get_result_flags(inst
), 0,
419 src0
, negate(src0
, 1, 1, 1, 1), 0);
423 EMIT_2ARG_ARITH(A0_ADD
);
427 src0
= src_vector(p
, &inst
->SrcReg
[0], program
);
428 src1
= src_vector(p
, &inst
->SrcReg
[1], program
);
429 src2
= src_vector(p
, &inst
->SrcReg
[2], program
);
430 i915_emit_arith(p
, A0_CMP
, get_result_vector(p
, inst
), get_result_flags(inst
), 0, src0
, src2
, src1
); /* NOTE: order of src2, src1 */
434 src0
= src_vector(p
, &inst
->SrcReg
[0], program
);
435 tmp
= i915_get_utemp(p
);
436 consts0
= i915_emit_const4fv(p
, sin_quad_constants
[0]);
437 consts1
= i915_emit_const4fv(p
, sin_quad_constants
[1]);
439 /* Reduce range from repeating about [-pi,pi] to [-1,1] */
442 tmp
, A0_DEST_CHANNEL_X
, 0,
444 swizzle(consts1
, Z
, ZERO
, ZERO
, ZERO
), /* 1/(2pi) */
445 swizzle(consts0
, W
, ZERO
, ZERO
, ZERO
)); /* .75 */
447 i915_emit_arith(p
, A0_FRC
, tmp
, A0_DEST_CHANNEL_X
, 0, tmp
, 0, 0);
451 tmp
, A0_DEST_CHANNEL_X
, 0,
453 swizzle(consts0
, X
, ZERO
, ZERO
, ZERO
), /* 2 */
454 swizzle(consts0
, Y
, ZERO
, ZERO
, ZERO
)); /* -1 */
456 /* Compute COS with the same calculation used for SIN, but a
457 * different source range has been mapped to [-1,1] this time.
460 /* tmp.y = abs(tmp.x); {x, abs(x), 0, 0} */
463 tmp
, A0_DEST_CHANNEL_Y
, 0,
464 swizzle(tmp
, ZERO
, X
, ZERO
, ZERO
),
465 negate(swizzle(tmp
, ZERO
, X
, ZERO
, ZERO
), 0, 1, 0, 0),
468 /* tmp.y = tmp.y * tmp.x; {x, x * abs(x), 0, 0} */
471 tmp
, A0_DEST_CHANNEL_Y
, 0,
472 swizzle(tmp
, ZERO
, X
, ZERO
, ZERO
),
476 /* tmp.x = tmp.xy DP sin_quad_constants[2].xy */
479 tmp
, A0_DEST_CHANNEL_X
, 0,
481 swizzle(consts1
, X
, Y
, ZERO
, ZERO
),
484 /* tmp.x now contains a first approximation (y). Now, weight it
485 * against tmp.y**2 to get closer.
489 tmp
, A0_DEST_CHANNEL_Y
, 0,
490 swizzle(tmp
, ZERO
, X
, ZERO
, ZERO
),
491 negate(swizzle(tmp
, ZERO
, X
, ZERO
, ZERO
), 0, 1, 0, 0),
494 /* tmp.y = tmp.x * tmp.y - tmp.x; {y, y * abs(y) - y, 0, 0} */
497 tmp
, A0_DEST_CHANNEL_Y
, 0,
498 swizzle(tmp
, ZERO
, X
, ZERO
, ZERO
),
499 swizzle(tmp
, ZERO
, Y
, ZERO
, ZERO
),
500 negate(swizzle(tmp
, ZERO
, X
, ZERO
, ZERO
), 0, 1, 0, 0));
502 /* result = .2225 * tmp.y + tmp.x =.2225(y * abs(y) - y) + y= */
505 get_result_vector(p
, inst
),
506 get_result_flags(inst
), 0,
507 swizzle(consts1
, W
, W
, W
, W
),
508 swizzle(tmp
, Y
, Y
, Y
, Y
),
509 swizzle(tmp
, X
, X
, X
, X
));
513 src0
= src_vector(p
, &inst
->SrcReg
[0], program
);
514 src1
= src_vector(p
, &inst
->SrcReg
[1], program
);
517 get_result_vector(p
, inst
),
518 get_result_flags(inst
), 0,
519 swizzle(src0
, X
, Y
, ZERO
, ZERO
),
520 swizzle(src1
, X
, Y
, ZERO
, ZERO
),
525 EMIT_2ARG_ARITH(A0_DP3
);
529 EMIT_2ARG_ARITH(A0_DP4
);
533 src0
= src_vector(p
, &inst
->SrcReg
[0], program
);
534 src1
= src_vector(p
, &inst
->SrcReg
[1], program
);
538 get_result_vector(p
, inst
),
539 get_result_flags(inst
), 0,
540 swizzle(src0
, X
, Y
, Z
, ONE
), src1
, 0);
544 src0
= src_vector(p
, &inst
->SrcReg
[0], program
);
545 src1
= src_vector(p
, &inst
->SrcReg
[1], program
);
547 /* result[0] = 1 * 1;
548 * result[1] = a[1] * b[1];
549 * result[2] = a[2] * 1;
550 * result[3] = 1 * b[3];
554 get_result_vector(p
, inst
),
555 get_result_flags(inst
), 0,
556 swizzle(src0
, ONE
, Y
, Z
, ONE
),
557 swizzle(src1
, ONE
, Y
, ONE
, W
), 0);
561 src0
= src_vector(p
, &inst
->SrcReg
[0], program
);
565 get_result_vector(p
, inst
),
566 get_result_flags(inst
), 0,
567 swizzle(src0
, X
, X
, X
, X
), 0, 0);
571 EMIT_1ARG_ARITH(A0_FLR
);
575 EMIT_1ARG_ARITH(A0_TRC
);
579 EMIT_1ARG_ARITH(A0_FRC
);
583 src0
= src_vector(p
, &inst
->SrcReg
[0], program
);
584 tmp
= i915_get_utemp(p
);
586 i915_emit_texld(p
, get_live_regs(p
, inst
),
587 tmp
, A0_DEST_CHANNEL_ALL
, /* use a dummy dest reg */
588 0, src0
, T0_TEXKILL
);
592 if (inst
->DstReg
.CondMask
== COND_TR
) {
593 tmp
= i915_get_utemp(p
);
595 /* The KIL instruction discards the fragment if any component of
596 * the source is < 0. Emit an immediate operand of {-1}.xywz.
598 i915_emit_texld(p
, get_live_regs(p
, inst
),
599 tmp
, A0_DEST_CHANNEL_ALL
,
600 0, /* use a dummy dest reg */
601 negate(swizzle(tmp
, ONE
, ONE
, ONE
, ONE
),
606 i915_program_error(p
, "Unsupported KIL_NV condition code: %d",
607 inst
->DstReg
.CondMask
);
612 src0
= src_vector(p
, &inst
->SrcReg
[0], program
);
616 get_result_vector(p
, inst
),
617 get_result_flags(inst
), 0,
618 swizzle(src0
, X
, X
, X
, X
), 0, 0);
622 src0
= src_vector(p
, &inst
->SrcReg
[0], program
);
623 tmp
= i915_get_utemp(p
);
625 /* tmp = max( a.xyzw, a.00zw )
626 * XXX: Clamp tmp.w to -128..128
628 * tmp.y = tmp.w * tmp.y
630 * result = cmp (a.11-x1, a.1x01, a.1xy1 )
632 i915_emit_arith(p
, A0_MAX
, tmp
, A0_DEST_CHANNEL_ALL
, 0,
633 src0
, swizzle(src0
, ZERO
, ZERO
, Z
, W
), 0);
635 i915_emit_arith(p
, A0_LOG
, tmp
, A0_DEST_CHANNEL_Y
, 0,
636 swizzle(tmp
, Y
, Y
, Y
, Y
), 0, 0);
638 i915_emit_arith(p
, A0_MUL
, tmp
, A0_DEST_CHANNEL_Y
, 0,
639 swizzle(tmp
, ZERO
, Y
, ZERO
, ZERO
),
640 swizzle(tmp
, ZERO
, W
, ZERO
, ZERO
), 0);
642 i915_emit_arith(p
, A0_EXP
, tmp
, A0_DEST_CHANNEL_Y
, 0,
643 swizzle(tmp
, Y
, Y
, Y
, Y
), 0, 0);
645 i915_emit_arith(p
, A0_CMP
,
646 get_result_vector(p
, inst
),
647 get_result_flags(inst
), 0,
648 negate(swizzle(tmp
, ONE
, ONE
, X
, ONE
), 0, 0, 1, 0),
649 swizzle(tmp
, ONE
, X
, ZERO
, ONE
),
650 swizzle(tmp
, ONE
, X
, Y
, ONE
));
655 src0
= src_vector(p
, &inst
->SrcReg
[0], program
);
656 src1
= src_vector(p
, &inst
->SrcReg
[1], program
);
657 src2
= src_vector(p
, &inst
->SrcReg
[2], program
);
658 flags
= get_result_flags(inst
);
659 tmp
= i915_get_utemp(p
);
666 * result = (-c)*a + tmp
668 i915_emit_arith(p
, A0_MAD
, tmp
,
669 flags
& A0_DEST_CHANNEL_ALL
, 0, src1
, src0
, src2
);
671 i915_emit_arith(p
, A0_MAD
,
672 get_result_vector(p
, inst
),
673 flags
, 0, negate(src2
, 1, 1, 1, 1), src0
, tmp
);
677 EMIT_3ARG_ARITH(A0_MAD
);
681 EMIT_2ARG_ARITH(A0_MAX
);
685 src0
= src_vector(p
, &inst
->SrcReg
[0], program
);
686 src1
= src_vector(p
, &inst
->SrcReg
[1], program
);
687 tmp
= i915_get_utemp(p
);
688 flags
= get_result_flags(inst
);
692 tmp
, flags
& A0_DEST_CHANNEL_ALL
, 0,
693 negate(src0
, 1, 1, 1, 1),
694 negate(src1
, 1, 1, 1, 1), 0);
698 get_result_vector(p
, inst
),
699 flags
, 0, negate(tmp
, 1, 1, 1, 1), 0, 0);
703 EMIT_1ARG_ARITH(A0_MOV
);
707 EMIT_2ARG_ARITH(A0_MUL
);
711 src0
= src_vector(p
, &inst
->SrcReg
[0], program
);
712 src1
= src_vector(p
, &inst
->SrcReg
[1], program
);
713 tmp
= i915_get_utemp(p
);
714 flags
= get_result_flags(inst
);
716 /* XXX: masking on intermediate values, here and elsewhere.
720 tmp
, A0_DEST_CHANNEL_X
, 0,
721 swizzle(src0
, X
, X
, X
, X
), 0, 0);
723 i915_emit_arith(p
, A0_MUL
, tmp
, A0_DEST_CHANNEL_X
, 0, tmp
, src1
, 0);
728 get_result_vector(p
, inst
),
729 flags
, 0, swizzle(tmp
, X
, X
, X
, X
), 0, 0);
734 src0
= src_vector(p
, &inst
->SrcReg
[0], program
);
738 get_result_vector(p
, inst
),
739 get_result_flags(inst
), 0,
740 swizzle(src0
, X
, X
, X
, X
), 0, 0);
745 src0
= src_vector(p
, &inst
->SrcReg
[0], program
);
749 get_result_vector(p
, inst
),
750 get_result_flags(inst
), 0,
751 swizzle(src0
, X
, X
, X
, X
), 0, 0);
755 src0
= src_vector(p
, &inst
->SrcReg
[0], program
);
756 tmp
= i915_get_utemp(p
);
759 * t0.xy = MUL x.xx11, x.x1111 ; x^2, x, 1, 1
760 * t0 = MUL t0.xyxy t0.xx11 ; x^4, x^3, x^2, x
761 * t1 = MUL t0.xyyw t0.yz11 ; x^7 x^5 x^3 x
762 * scs.x = DP4 t1, sin_constants
763 * t1 = MUL t0.xxz1 t0.z111 ; x^6 x^4 x^2 1
764 * scs.y = DP4 t1, cos_constants
768 tmp
, A0_DEST_CHANNEL_XY
, 0,
769 swizzle(src0
, X
, X
, ONE
, ONE
),
770 swizzle(src0
, X
, ONE
, ONE
, ONE
), 0);
774 tmp
, A0_DEST_CHANNEL_ALL
, 0,
775 swizzle(tmp
, X
, Y
, X
, Y
),
776 swizzle(tmp
, X
, X
, ONE
, ONE
), 0);
778 if (inst
->DstReg
.WriteMask
& WRITEMASK_Y
) {
781 if (inst
->DstReg
.WriteMask
& WRITEMASK_X
)
782 tmp1
= i915_get_utemp(p
);
788 tmp1
, A0_DEST_CHANNEL_ALL
, 0,
789 swizzle(tmp
, X
, Y
, Y
, W
),
790 swizzle(tmp
, X
, Z
, ONE
, ONE
), 0);
794 get_result_vector(p
, inst
),
795 A0_DEST_CHANNEL_Y
, 0,
796 swizzle(tmp1
, W
, Z
, Y
, X
),
797 i915_emit_const4fv(p
, sin_constants
), 0);
800 if (inst
->DstReg
.WriteMask
& WRITEMASK_X
) {
803 tmp
, A0_DEST_CHANNEL_XYZ
, 0,
804 swizzle(tmp
, X
, X
, Z
, ONE
),
805 swizzle(tmp
, Z
, ONE
, ONE
, ONE
), 0);
809 get_result_vector(p
, inst
),
810 A0_DEST_CHANNEL_X
, 0,
811 swizzle(tmp
, ONE
, Z
, Y
, X
),
812 i915_emit_const4fv(p
, cos_constants
), 0);
817 tmp
= i915_get_utemp(p
);
818 flags
= get_result_flags(inst
);
819 dst
= get_result_vector(p
, inst
);
821 /* tmp = src1 >= src2 */
826 src_vector(p
, &inst
->SrcReg
[0], program
),
827 src_vector(p
, &inst
->SrcReg
[1], program
),
829 /* dst = src1 <= src2 */
834 negate(src_vector(p
, &inst
->SrcReg
[0], program
),
836 negate(src_vector(p
, &inst
->SrcReg
[1], program
),
839 /* dst = tmp && dst */
850 src0
= src_vector(p
, &inst
->SrcReg
[0], program
);
851 tmp
= i915_get_utemp(p
);
852 consts0
= i915_emit_const4fv(p
, sin_quad_constants
[0]);
853 consts1
= i915_emit_const4fv(p
, sin_quad_constants
[1]);
855 /* Reduce range from repeating about [-pi,pi] to [-1,1] */
858 tmp
, A0_DEST_CHANNEL_X
, 0,
860 swizzle(consts1
, Z
, ZERO
, ZERO
, ZERO
), /* 1/(2pi) */
861 swizzle(consts0
, Z
, ZERO
, ZERO
, ZERO
)); /* .5 */
863 i915_emit_arith(p
, A0_FRC
, tmp
, A0_DEST_CHANNEL_X
, 0, tmp
, 0, 0);
867 tmp
, A0_DEST_CHANNEL_X
, 0,
869 swizzle(consts0
, X
, ZERO
, ZERO
, ZERO
), /* 2 */
870 swizzle(consts0
, Y
, ZERO
, ZERO
, ZERO
)); /* -1 */
872 /* Compute sin using a quadratic and quartic. It gives continuity
873 * that repeating the Taylor series lacks every 2*pi, and has
876 * The idea was described at:
877 * http://www.devmaster.net/forums/showthread.php?t=5784
880 /* tmp.y = abs(tmp.x); {x, abs(x), 0, 0} */
883 tmp
, A0_DEST_CHANNEL_Y
, 0,
884 swizzle(tmp
, ZERO
, X
, ZERO
, ZERO
),
885 negate(swizzle(tmp
, ZERO
, X
, ZERO
, ZERO
), 0, 1, 0, 0),
888 /* tmp.y = tmp.y * tmp.x; {x, x * abs(x), 0, 0} */
891 tmp
, A0_DEST_CHANNEL_Y
, 0,
892 swizzle(tmp
, ZERO
, X
, ZERO
, ZERO
),
896 /* tmp.x = tmp.xy DP sin_quad_constants[2].xy */
899 tmp
, A0_DEST_CHANNEL_X
, 0,
901 swizzle(consts1
, X
, Y
, ZERO
, ZERO
),
904 /* tmp.x now contains a first approximation (y). Now, weight it
905 * against tmp.y**2 to get closer.
909 tmp
, A0_DEST_CHANNEL_Y
, 0,
910 swizzle(tmp
, ZERO
, X
, ZERO
, ZERO
),
911 negate(swizzle(tmp
, ZERO
, X
, ZERO
, ZERO
), 0, 1, 0, 0),
914 /* tmp.y = tmp.x * tmp.y - tmp.x; {y, y * abs(y) - y, 0, 0} */
917 tmp
, A0_DEST_CHANNEL_Y
, 0,
918 swizzle(tmp
, ZERO
, X
, ZERO
, ZERO
),
919 swizzle(tmp
, ZERO
, Y
, ZERO
, ZERO
),
920 negate(swizzle(tmp
, ZERO
, X
, ZERO
, ZERO
), 0, 1, 0, 0));
922 /* result = .2225 * tmp.y + tmp.x =.2225(y * abs(y) - y) + y= */
925 get_result_vector(p
, inst
),
926 get_result_flags(inst
), 0,
927 swizzle(consts1
, W
, W
, W
, W
),
928 swizzle(tmp
, Y
, Y
, Y
, Y
),
929 swizzle(tmp
, X
, X
, X
, X
));
934 EMIT_2ARG_ARITH(A0_SGE
);
940 get_result_vector( p
, inst
),
941 get_result_flags( inst
), 0,
942 negate(src_vector( p
, &inst
->SrcReg
[0], program
),
944 negate(src_vector( p
, &inst
->SrcReg
[1], program
),
952 get_result_vector( p
, inst
),
953 get_result_flags( inst
), 0,
954 negate(src_vector( p
, &inst
->SrcReg
[0], program
),
956 negate(src_vector( p
, &inst
->SrcReg
[1], program
),
962 EMIT_2ARG_ARITH(A0_SLT
);
966 tmp
= i915_get_utemp(p
);
967 flags
= get_result_flags(inst
);
968 dst
= get_result_vector(p
, inst
);
970 /* tmp = src1 < src2 */
975 src_vector(p
, &inst
->SrcReg
[0], program
),
976 src_vector(p
, &inst
->SrcReg
[1], program
),
978 /* dst = src1 > src2 */
983 negate(src_vector(p
, &inst
->SrcReg
[0], program
),
985 negate(src_vector(p
, &inst
->SrcReg
[1], program
),
988 /* dst = tmp || dst */
992 flags
| A0_DEST_SATURATE
, 0,
999 dst
= get_result_vector(p
, inst
);
1000 flags
= get_result_flags(inst
);
1001 src0
= src_vector(p
, &inst
->SrcReg
[0], program
);
1002 tmp
= i915_get_utemp(p
);
1004 /* tmp = (src < 0.0) */
1010 swizzle(src0
, ZERO
, ZERO
, ZERO
, ZERO
),
1013 /* dst = (0.0 < src) */
1018 swizzle(src0
, ZERO
, ZERO
, ZERO
, ZERO
),
1022 /* dst = (src > 0.0) - (src < 0.0) */
1028 negate(tmp
, 1, 1, 1, 1),
1034 src0
= src_vector(p
, &inst
->SrcReg
[0], program
);
1035 src1
= src_vector(p
, &inst
->SrcReg
[1], program
);
1039 get_result_vector(p
, inst
),
1040 get_result_flags(inst
), 0,
1041 src0
, negate(src1
, 1, 1, 1, 1), 0);
1045 EMIT_1ARG_ARITH(A0_MOV
); /* extended swizzle handled natively */
1053 EMIT_TEX(T0_TEXLDB
);
1057 EMIT_TEX(T0_TEXLDP
);
1062 * result.x = src0.y * src1.z - src0.z * src1.y;
1063 * result.y = src0.z * src1.x - src0.x * src1.z;
1064 * result.z = src0.x * src1.y - src0.y * src1.x;
1067 src0
= src_vector(p
, &inst
->SrcReg
[0], program
);
1068 src1
= src_vector(p
, &inst
->SrcReg
[1], program
);
1069 tmp
= i915_get_utemp(p
);
1073 tmp
, A0_DEST_CHANNEL_ALL
, 0,
1074 swizzle(src0
, Z
, X
, Y
, ONE
),
1075 swizzle(src1
, Y
, Z
, X
, ONE
), 0);
1079 get_result_vector(p
, inst
),
1080 get_result_flags(inst
), 0,
1081 swizzle(src0
, Y
, Z
, X
, ONE
),
1082 swizzle(src1
, Z
, X
, Y
, ONE
),
1083 negate(tmp
, 1, 1, 1, 0));
1089 case OPCODE_BGNLOOP
:
1099 case OPCODE_ENDLOOP
:
1104 i915_program_error(p
, "Unsupported opcode: %s",
1105 _mesa_opcode_string(inst
->Opcode
));
1110 /* These opcodes are claimed as GLSL, NV_vp, and ARB_vp in
1111 * prog_instruction.h, but apparently GLSL doesn't ever emit them.
1112 * Instead, it translates to EX2 or LG2.
1116 /* These opcodes are claimed by GLSL in prog_instruction.h, but
1117 * only NV_vp/fp appears to emit them.
1120 i915_program_error(p
, "bad opcode: %s",
1121 _mesa_opcode_string(inst
->Opcode
));
1126 i915_release_utemps(p
);
1130 /* Rather than trying to intercept and jiggle depth writes during
1131 * emit, just move the value into its correct position at the end of
1135 fixup_depth_write(struct i915_fragment_program
*p
)
1137 if (p
->depth_written
) {
1138 GLuint depth
= UREG(REG_TYPE_OD
, 0);
1142 depth
, A0_DEST_CHANNEL_W
, 0,
1143 swizzle(depth
, X
, Y
, Z
, Z
), 0, 0);
1149 check_wpos(struct i915_fragment_program
*p
)
1151 GLuint inputs
= p
->FragProg
.Base
.InputsRead
;
1156 for (i
= 0; i
< p
->ctx
->Const
.MaxTextureCoordUnits
; i
++) {
1157 if (inputs
& (FRAG_BIT_TEX(i
) | FRAG_BIT_VAR(i
)))
1159 else if (inputs
& FRAG_BIT_WPOS
) {
1161 inputs
&= ~FRAG_BIT_WPOS
;
1165 if (inputs
& FRAG_BIT_WPOS
) {
1166 i915_program_error(p
, "No free texcoord for wpos value");
1172 translate_program(struct i915_fragment_program
*p
)
1174 struct i915_context
*i915
= I915_CONTEXT(p
->ctx
);
1176 if (INTEL_DEBUG
& DEBUG_WM
) {
1178 _mesa_print_program(&p
->FragProg
.Base
);
1182 i915_init_program(i915
, p
);
1185 fixup_depth_write(p
);
1186 i915_fini_program(p
);
1193 track_params(struct i915_fragment_program
*p
)
1198 _mesa_load_state_parameters(p
->ctx
, p
->FragProg
.Base
.Parameters
);
1200 for (i
= 0; i
< p
->nr_params
; i
++) {
1201 GLint reg
= p
->param
[i
].reg
;
1202 COPY_4V(p
->constant
[reg
], p
->param
[i
].values
);
1205 p
->params_uptodate
= 1;
1206 p
->on_hardware
= 0; /* overkill */
1211 i915BindProgram(struct gl_context
* ctx
, GLenum target
, struct gl_program
*prog
)
1213 if (target
== GL_FRAGMENT_PROGRAM_ARB
) {
1214 struct i915_context
*i915
= I915_CONTEXT(ctx
);
1215 struct i915_fragment_program
*p
= (struct i915_fragment_program
*) prog
;
1217 if (i915
->current_program
== p
)
1220 if (i915
->current_program
) {
1221 i915
->current_program
->on_hardware
= 0;
1222 i915
->current_program
->params_uptodate
= 0;
1225 i915
->current_program
= p
;
1227 assert(p
->on_hardware
== 0);
1228 assert(p
->params_uptodate
== 0);
1233 static struct gl_program
*
1234 i915NewProgram(struct gl_context
* ctx
, GLenum target
, GLuint id
)
1237 case GL_VERTEX_PROGRAM_ARB
:
1238 return _mesa_init_vertex_program(ctx
, CALLOC_STRUCT(gl_vertex_program
),
1241 case GL_FRAGMENT_PROGRAM_ARB
:{
1242 struct i915_fragment_program
*prog
=
1243 CALLOC_STRUCT(i915_fragment_program
);
1245 i915_init_program(I915_CONTEXT(ctx
), prog
);
1247 return _mesa_init_fragment_program(ctx
, &prog
->FragProg
,
1257 return _mesa_new_program(ctx
, target
, id
);
1262 i915DeleteProgram(struct gl_context
* ctx
, struct gl_program
*prog
)
1264 if (prog
->Target
== GL_FRAGMENT_PROGRAM_ARB
) {
1265 struct i915_context
*i915
= I915_CONTEXT(ctx
);
1266 struct i915_fragment_program
*p
= (struct i915_fragment_program
*) prog
;
1268 if (i915
->current_program
== p
)
1269 i915
->current_program
= 0;
1272 _mesa_delete_program(ctx
, prog
);
1277 i915IsProgramNative(struct gl_context
* ctx
, GLenum target
, struct gl_program
*prog
)
1279 if (target
== GL_FRAGMENT_PROGRAM_ARB
) {
1280 struct i915_fragment_program
*p
= (struct i915_fragment_program
*) prog
;
1283 translate_program(p
);
1292 i915ProgramStringNotify(struct gl_context
* ctx
,
1293 GLenum target
, struct gl_program
*prog
)
1295 if (target
== GL_FRAGMENT_PROGRAM_ARB
) {
1296 struct i915_fragment_program
*p
= (struct i915_fragment_program
*) prog
;
1300 (void) _tnl_program_string(ctx
, target
, prog
);
1302 /* XXX check if program is legal, within limits */
1307 i915_update_program(struct gl_context
*ctx
)
1309 struct intel_context
*intel
= intel_context(ctx
);
1310 struct i915_context
*i915
= i915_context(&intel
->ctx
);
1311 struct i915_fragment_program
*fp
=
1312 (struct i915_fragment_program
*) ctx
->FragmentProgram
._Current
;
1314 if (i915
->current_program
!= fp
) {
1315 if (i915
->current_program
) {
1316 i915
->current_program
->on_hardware
= 0;
1317 i915
->current_program
->params_uptodate
= 0;
1320 i915
->current_program
= fp
;
1323 if (!fp
->translated
)
1324 translate_program(fp
);
1326 FALLBACK(&i915
->intel
, I915_FALLBACK_PROGRAM
, fp
->error
);
1330 i915ValidateFragmentProgram(struct i915_context
*i915
)
1332 struct gl_context
*ctx
= &i915
->intel
.ctx
;
1333 struct intel_context
*intel
= intel_context(ctx
);
1334 TNLcontext
*tnl
= TNL_CONTEXT(ctx
);
1335 struct vertex_buffer
*VB
= &tnl
->vb
;
1337 struct i915_fragment_program
*p
=
1338 (struct i915_fragment_program
*) ctx
->FragmentProgram
._Current
;
1340 const GLuint inputsRead
= p
->FragProg
.Base
.InputsRead
;
1341 GLuint s4
= i915
->state
.Ctx
[I915_CTXREG_LIS4
] & ~S4_VFMT_MASK
;
1342 GLuint s2
= S2_TEXCOORD_NONE
;
1347 VB
->AttribPtr
[VERT_ATTRIB_POS
] = VB
->NdcPtr
;
1350 translate_program(p
);
1352 intel
->vertex_attr_count
= 0;
1353 intel
->wpos_offset
= 0;
1354 intel
->coloroffset
= 0;
1355 intel
->specoffset
= 0;
1357 if (inputsRead
& FRAG_BITS_TEX_ANY
|| p
->wpos_tex
!= -1) {
1358 EMIT_ATTR(_TNL_ATTRIB_POS
, EMIT_4F_VIEWPORT
, S4_VFMT_XYZW
, 16);
1361 EMIT_ATTR(_TNL_ATTRIB_POS
, EMIT_3F_VIEWPORT
, S4_VFMT_XYZ
, 12);
1364 if (inputsRead
& FRAG_BIT_COL0
) {
1365 intel
->coloroffset
= offset
/ 4;
1366 EMIT_ATTR(_TNL_ATTRIB_COLOR0
, EMIT_4UB_4F_BGRA
, S4_VFMT_COLOR
, 4);
1369 if (inputsRead
& FRAG_BIT_COL1
) {
1370 intel
->specoffset
= offset
/ 4;
1371 EMIT_ATTR(_TNL_ATTRIB_COLOR1
, EMIT_4UB_4F_BGRA
, S4_VFMT_SPEC_FOG
, 4);
1374 if ((inputsRead
& FRAG_BIT_FOGC
)) {
1375 EMIT_ATTR(_TNL_ATTRIB_FOG
, EMIT_1F
, S4_VFMT_FOG_PARAM
, 4);
1378 for (i
= 0; i
< p
->ctx
->Const
.MaxTextureCoordUnits
; i
++) {
1379 if (inputsRead
& FRAG_BIT_TEX(i
)) {
1380 int sz
= VB
->AttribPtr
[_TNL_ATTRIB_TEX0
+ i
]->size
;
1382 s2
&= ~S2_TEXCOORD_FMT(i
, S2_TEXCOORD_FMT0_MASK
);
1383 s2
|= S2_TEXCOORD_FMT(i
, SZ_TO_HW(sz
));
1385 EMIT_ATTR(_TNL_ATTRIB_TEX0
+ i
, EMIT_SZ(sz
), 0, sz
* 4);
1387 else if (inputsRead
& FRAG_BIT_VAR(i
)) {
1388 int sz
= VB
->AttribPtr
[_TNL_ATTRIB_GENERIC0
+ i
]->size
;
1390 s2
&= ~S2_TEXCOORD_FMT(i
, S2_TEXCOORD_FMT0_MASK
);
1391 s2
|= S2_TEXCOORD_FMT(i
, SZ_TO_HW(sz
));
1393 EMIT_ATTR(_TNL_ATTRIB_GENERIC0
+ i
, EMIT_SZ(sz
), 0, sz
* 4);
1395 else if (i
== p
->wpos_tex
) {
1396 int wpos_size
= 4 * sizeof(float);
1397 /* If WPOS is required, duplicate the XYZ position data in an
1398 * unused texture coordinate:
1400 s2
&= ~S2_TEXCOORD_FMT(i
, S2_TEXCOORD_FMT0_MASK
);
1401 s2
|= S2_TEXCOORD_FMT(i
, SZ_TO_HW(wpos_size
));
1403 intel
->wpos_offset
= offset
;
1404 EMIT_PAD(wpos_size
);
1408 if (s2
!= i915
->state
.Ctx
[I915_CTXREG_LIS2
] ||
1409 s4
!= i915
->state
.Ctx
[I915_CTXREG_LIS4
]) {
1412 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
1414 /* Must do this *after* statechange, so as not to affect
1415 * buffered vertices reliant on the old state:
1417 intel
->vertex_size
= _tnl_install_attrs(&intel
->ctx
,
1418 intel
->vertex_attrs
,
1419 intel
->vertex_attr_count
,
1420 intel
->ViewportMatrix
.m
, 0);
1422 assert(intel
->prim
.current_offset
== intel
->prim
.start_offset
);
1423 intel
->prim
.start_offset
= (intel
->prim
.current_offset
+ intel
->vertex_size
-1) / intel
->vertex_size
* intel
->vertex_size
;
1424 intel
->prim
.current_offset
= intel
->prim
.start_offset
;
1426 intel
->vertex_size
>>= 2;
1428 i915
->state
.Ctx
[I915_CTXREG_LIS2
] = s2
;
1429 i915
->state
.Ctx
[I915_CTXREG_LIS4
] = s4
;
1431 k
= intel
->vtbl
.check_vertex_size(intel
, intel
->vertex_size
);
1435 if (!p
->params_uptodate
)
1438 if (!p
->on_hardware
)
1439 i915_upload_program(i915
, p
);
1441 if (INTEL_DEBUG
& DEBUG_WM
) {
1443 i915_disassemble_program(i915
->state
.Program
, i915
->state
.ProgramSize
);
1448 i915InitFragProgFuncs(struct dd_function_table
*functions
)
1450 functions
->BindProgram
= i915BindProgram
;
1451 functions
->NewProgram
= i915NewProgram
;
1452 functions
->DeleteProgram
= i915DeleteProgram
;
1453 functions
->IsProgramNative
= i915IsProgramNative
;
1454 functions
->ProgramStringNotify
= i915ProgramStringNotify
;