1 /**************************************************************************
3 * Copyright 2009 VMware, Inc.
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 VMWARE 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 **************************************************************************/
30 * Depth/stencil testing to LLVM IR translation.
32 * To be done accurately/efficiently the depth/stencil test must be done with
33 * the same type/format of the depth/stencil buffer, which implies massaging
34 * the incoming depths to fit into place. Using a more straightforward
35 * type/format for depth/stencil values internally and only convert when
36 * flushing would avoid this, but it would most likely result in depth fighting
39 * We are free to use a different pixel layout though. Since our basic
40 * processing unit is a quad (2x2 pixel block) we store the depth/stencil
41 * values tiled, a quad at time. That is, a depth buffer containing
49 * will actually be stored in memory as
51 * Z11 Z12 Z21 Z22 Z13 Z14 Z23 Z24 ...
52 * Z31 Z32 Z41 Z42 Z33 Z34 Z43 Z44 ...
53 * ... ... ... ... ... ... ... ... ...
57 * Two-sided stencil test is supported but probably not as efficient as
58 * it could be. Currently, we use if/then/else constructs to do the
59 * operations for front vs. back-facing polygons. We could probably do
60 * both the front and back arithmetic then use a Select() instruction to
61 * choose the result depending on polyon orientation. We'd have to
62 * measure performance both ways and see which is better.
64 * @author Jose Fonseca <jfonseca@vmware.com>
67 #include "pipe/p_state.h"
68 #include "util/u_format.h"
70 #include "gallivm/lp_bld_type.h"
71 #include "gallivm/lp_bld_arit.h"
72 #include "gallivm/lp_bld_const.h"
73 #include "gallivm/lp_bld_logic.h"
74 #include "gallivm/lp_bld_flow.h"
75 #include "gallivm/lp_bld_intr.h"
76 #include "gallivm/lp_bld_debug.h"
77 #include "gallivm/lp_bld_swizzle.h"
79 #include "lp_bld_depth.h"
82 /** Used to select fields from pipe_stencil_state */
92 * Do the stencil test comparison (compare FB stencil values against ref value).
93 * This will be used twice when generating two-sided stencil code.
94 * \param stencil the front/back stencil state
95 * \param stencilRef the stencil reference value, replicated as a vector
96 * \param stencilVals vector of stencil values from framebuffer
97 * \return vector mask of pass/fail values (~0 or 0)
100 lp_build_stencil_test_single(struct lp_build_context
*bld
,
101 const struct pipe_stencil_state
*stencil
,
102 LLVMValueRef stencilRef
,
103 LLVMValueRef stencilVals
)
105 const unsigned stencilMax
= 255; /* XXX fix */
106 struct lp_type type
= bld
->type
;
111 assert(stencil
->enabled
);
113 if (stencil
->valuemask
!= stencilMax
) {
114 /* compute stencilRef = stencilRef & valuemask */
115 LLVMValueRef valuemask
= lp_build_const_int_vec(type
, stencil
->valuemask
);
116 stencilRef
= LLVMBuildAnd(bld
->builder
, stencilRef
, valuemask
, "");
117 /* compute stencilVals = stencilVals & valuemask */
118 stencilVals
= LLVMBuildAnd(bld
->builder
, stencilVals
, valuemask
, "");
121 res
= lp_build_cmp(bld
, stencil
->func
, stencilRef
, stencilVals
);
128 * Do the one or two-sided stencil test comparison.
129 * \sa lp_build_stencil_test_single
130 * \param face an integer indicating front (+) or back (-) facing polygon.
131 * If NULL, assume front-facing.
134 lp_build_stencil_test(struct lp_build_context
*bld
,
135 const struct pipe_stencil_state stencil
[2],
136 LLVMValueRef stencilRefs
[2],
137 LLVMValueRef stencilVals
,
142 assert(stencil
[0].enabled
);
144 if (stencil
[1].enabled
&& face
) {
145 /* do two-sided test */
146 struct lp_build_flow_context
*flow_ctx
;
147 struct lp_build_if_state if_ctx
;
148 LLVMValueRef front_facing
;
149 LLVMValueRef zero
= LLVMConstReal(LLVMFloatType(), 0.0);
150 LLVMValueRef result
= bld
->undef
;
152 flow_ctx
= lp_build_flow_create(bld
->builder
);
153 lp_build_flow_scope_begin(flow_ctx
);
155 lp_build_flow_scope_declare(flow_ctx
, &result
);
157 /* front_facing = face > 0.0 */
158 front_facing
= LLVMBuildFCmp(bld
->builder
, LLVMRealUGT
, face
, zero
, "");
160 lp_build_if(&if_ctx
, flow_ctx
, bld
->builder
, front_facing
);
162 result
= lp_build_stencil_test_single(bld
, &stencil
[0],
163 stencilRefs
[0], stencilVals
);
165 lp_build_else(&if_ctx
);
167 result
= lp_build_stencil_test_single(bld
, &stencil
[1],
168 stencilRefs
[1], stencilVals
);
170 lp_build_endif(&if_ctx
);
172 lp_build_flow_scope_end(flow_ctx
);
173 lp_build_flow_destroy(flow_ctx
);
178 /* do single-side test */
179 res
= lp_build_stencil_test_single(bld
, &stencil
[0],
180 stencilRefs
[0], stencilVals
);
188 * Apply the stencil operator (add/sub/keep/etc) to the given vector
190 * \return new stencil values vector
193 lp_build_stencil_op_single(struct lp_build_context
*bld
,
194 const struct pipe_stencil_state
*stencil
,
196 LLVMValueRef stencilRef
,
197 LLVMValueRef stencilVals
,
201 const unsigned stencilMax
= 255; /* XXX fix */
202 struct lp_type type
= bld
->type
;
204 LLVMValueRef max
= lp_build_const_int_vec(type
, stencilMax
);
211 stencil_op
= stencil
->fail_op
;
214 stencil_op
= stencil
->zfail_op
;
217 stencil_op
= stencil
->zpass_op
;
220 assert(0 && "Invalid stencil_op mode");
221 stencil_op
= PIPE_STENCIL_OP_KEEP
;
224 switch (stencil_op
) {
225 case PIPE_STENCIL_OP_KEEP
:
227 /* we can return early for this case */
229 case PIPE_STENCIL_OP_ZERO
:
232 case PIPE_STENCIL_OP_REPLACE
:
235 case PIPE_STENCIL_OP_INCR
:
236 res
= lp_build_add(bld
, stencilVals
, bld
->one
);
237 res
= lp_build_min(bld
, res
, max
);
239 case PIPE_STENCIL_OP_DECR
:
240 res
= lp_build_sub(bld
, stencilVals
, bld
->one
);
241 res
= lp_build_max(bld
, res
, bld
->zero
);
243 case PIPE_STENCIL_OP_INCR_WRAP
:
244 res
= lp_build_add(bld
, stencilVals
, bld
->one
);
245 res
= LLVMBuildAnd(bld
->builder
, res
, max
, "");
247 case PIPE_STENCIL_OP_DECR_WRAP
:
248 res
= lp_build_sub(bld
, stencilVals
, bld
->one
);
249 res
= LLVMBuildAnd(bld
->builder
, res
, max
, "");
251 case PIPE_STENCIL_OP_INVERT
:
252 res
= LLVMBuildNot(bld
->builder
, stencilVals
, "");
253 res
= LLVMBuildAnd(bld
->builder
, res
, max
, "");
256 assert(0 && "bad stencil op mode");
260 if (stencil
->writemask
!= stencilMax
) {
261 /* compute res = (res & mask) | (stencilVals & ~mask) */
262 LLVMValueRef mask
= lp_build_const_int_vec(type
, stencil
->writemask
);
263 LLVMValueRef cmask
= LLVMBuildNot(bld
->builder
, mask
, "notWritemask");
264 LLVMValueRef t1
= LLVMBuildAnd(bld
->builder
, res
, mask
, "t1");
265 LLVMValueRef t2
= LLVMBuildAnd(bld
->builder
, stencilVals
, cmask
, "t2");
266 res
= LLVMBuildOr(bld
->builder
, t1
, t2
, "t1_or_t2");
269 /* only the update the vector elements enabled by 'mask' */
270 res
= lp_build_select(bld
, mask
, res
, stencilVals
);
277 * Do the one or two-sided stencil test op/update.
280 lp_build_stencil_op(struct lp_build_context
*bld
,
281 const struct pipe_stencil_state stencil
[2],
283 LLVMValueRef stencilRefs
[2],
284 LLVMValueRef stencilVals
,
289 assert(stencil
[0].enabled
);
291 if (stencil
[1].enabled
&& face
) {
292 /* do two-sided op */
293 struct lp_build_flow_context
*flow_ctx
;
294 struct lp_build_if_state if_ctx
;
295 LLVMValueRef front_facing
;
296 LLVMValueRef zero
= LLVMConstReal(LLVMFloatType(), 0.0);
297 LLVMValueRef result
= bld
->undef
;
299 flow_ctx
= lp_build_flow_create(bld
->builder
);
300 lp_build_flow_scope_begin(flow_ctx
);
302 lp_build_flow_scope_declare(flow_ctx
, &result
);
304 /* front_facing = face > 0.0 */
305 front_facing
= LLVMBuildFCmp(bld
->builder
, LLVMRealUGT
, face
, zero
, "");
307 lp_build_if(&if_ctx
, flow_ctx
, bld
->builder
, front_facing
);
309 result
= lp_build_stencil_op_single(bld
, &stencil
[0], op
,
310 stencilRefs
[0], stencilVals
, mask
);
312 lp_build_else(&if_ctx
);
314 result
= lp_build_stencil_op_single(bld
, &stencil
[1], op
,
315 stencilRefs
[1], stencilVals
, mask
);
317 lp_build_endif(&if_ctx
);
319 lp_build_flow_scope_end(flow_ctx
);
320 lp_build_flow_destroy(flow_ctx
);
325 /* do single-sided op */
326 return lp_build_stencil_op_single(bld
, &stencil
[0], op
,
327 stencilRefs
[0], stencilVals
, mask
);
334 * Return a type appropriate for depth/stencil testing.
337 lp_depth_type(const struct util_format_description
*format_desc
,
343 assert(format_desc
->colorspace
== UTIL_FORMAT_COLORSPACE_ZS
);
344 assert(format_desc
->block
.width
== 1);
345 assert(format_desc
->block
.height
== 1);
347 swizzle
= format_desc
->swizzle
[0];
350 memset(&type
, 0, sizeof type
);
351 type
.width
= format_desc
->block
.bits
;
353 if(format_desc
->channel
[swizzle
].type
== UTIL_FORMAT_TYPE_FLOAT
) {
354 type
.floating
= TRUE
;
355 assert(swizzle
== 0);
356 assert(format_desc
->channel
[swizzle
].size
== format_desc
->block
.bits
);
358 else if(format_desc
->channel
[swizzle
].type
== UTIL_FORMAT_TYPE_UNSIGNED
) {
359 assert(format_desc
->block
.bits
<= 32);
360 if(format_desc
->channel
[swizzle
].normalized
)
366 assert(type
.width
<= length
);
367 type
.length
= length
/ type
.width
;
374 * Compute bitmask and bit shift to apply to the incoming fragment Z values
375 * and the Z buffer values needed before doing the Z comparison.
377 * Note that we leave the Z bits in the position that we find them
378 * in the Z buffer (typically 0xffffff00 or 0x00ffffff). That lets us
379 * get by with fewer bit twiddling steps.
382 get_z_shift_and_mask(const struct util_format_description
*format_desc
,
383 unsigned *shift
, unsigned *mask
)
385 const unsigned total_bits
= format_desc
->block
.bits
;
388 unsigned padding_left
, padding_right
;
390 assert(format_desc
->colorspace
== UTIL_FORMAT_COLORSPACE_ZS
);
391 assert(format_desc
->block
.width
== 1);
392 assert(format_desc
->block
.height
== 1);
394 z_swizzle
= format_desc
->swizzle
[0];
396 if (z_swizzle
== UTIL_FORMAT_SWIZZLE_NONE
)
400 for (chan
= 0; chan
< z_swizzle
; ++chan
)
401 padding_right
+= format_desc
->channel
[chan
].size
;
404 total_bits
- (padding_right
+ format_desc
->channel
[z_swizzle
].size
);
406 if (padding_left
|| padding_right
) {
407 unsigned long long mask_left
= (1ULL << (total_bits
- padding_left
)) - 1;
408 unsigned long long mask_right
= (1ULL << (padding_right
)) - 1;
409 *mask
= mask_left
^ mask_right
;
415 *shift
= padding_left
;
422 * Compute bitmask and bit shift to apply to the framebuffer pixel values
423 * to put the stencil bits in the least significant position.
427 get_s_shift_and_mask(const struct util_format_description
*format_desc
,
428 unsigned *shift
, unsigned *mask
)
433 s_swizzle
= format_desc
->swizzle
[1];
435 if (s_swizzle
== UTIL_FORMAT_SWIZZLE_NONE
)
439 for (chan
= 0; chan
< s_swizzle
; chan
++)
440 *shift
+= format_desc
->channel
[chan
].size
;
442 sz
= format_desc
->channel
[s_swizzle
].size
;
443 *mask
= (1U << sz
) - 1U;
450 * Perform the occlusion test and increase the counter.
451 * Test the depth mask. Add the number of channel which has none zero mask
452 * into the occlusion counter. e.g. maskvalue is {-1, -1, -1, -1}.
453 * The counter will add 4.
455 * \param type holds element type of the mask vector.
456 * \param maskvalue is the depth test mask.
457 * \param counter is a pointer of the uint32 counter.
460 lp_build_occlusion_count(LLVMBuilderRef builder
,
462 LLVMValueRef maskvalue
,
463 LLVMValueRef counter
)
465 LLVMValueRef countmask
= lp_build_const_int_vec(type
, 1);
466 LLVMValueRef countv
= LLVMBuildAnd(builder
, maskvalue
, countmask
, "countv");
467 LLVMTypeRef i8v16
= LLVMVectorType(LLVMInt8Type(), 16);
468 LLVMValueRef counti
= LLVMBuildBitCast(builder
, countv
, i8v16
, "counti");
469 LLVMValueRef maskarray
[4] = {
470 LLVMConstInt(LLVMInt32Type(), 0, 0),
471 LLVMConstInt(LLVMInt32Type(), 4, 0),
472 LLVMConstInt(LLVMInt32Type(), 8, 0),
473 LLVMConstInt(LLVMInt32Type(), 12, 0),
475 LLVMValueRef shufflemask
= LLVMConstVector(maskarray
, 4);
476 LLVMValueRef shufflev
= LLVMBuildShuffleVector(builder
, counti
, LLVMGetUndef(i8v16
), shufflemask
, "shufflev");
477 LLVMValueRef shuffle
= LLVMBuildBitCast(builder
, shufflev
, LLVMInt32Type(), "shuffle");
478 LLVMValueRef count
= lp_build_intrinsic_unary(builder
, "llvm.ctpop.i32", LLVMInt32Type(), shuffle
);
479 LLVMValueRef orig
= LLVMBuildLoad(builder
, counter
, "orig");
480 LLVMValueRef incr
= LLVMBuildAdd(builder
, orig
, count
, "incr");
481 LLVMBuildStore(builder
, incr
, counter
);
487 * Generate code for performing depth and/or stencil tests.
488 * We operate on a vector of values (typically a 2x2 quad).
490 * \param depth the depth test state
491 * \param stencil the front/back stencil state
492 * \param type the data type of the fragment depth/stencil values
493 * \param format_desc description of the depth/stencil surface
494 * \param mask the alive/dead pixel mask for the quad (vector)
495 * \param stencil_refs the front/back stencil ref values (scalar)
496 * \param z_src the incoming depth/stencil values (a 2x2 quad)
497 * \param zs_dst_ptr pointer to depth/stencil values in framebuffer
498 * \param facing contains float value indicating front/back facing polygon
501 lp_build_depth_stencil_test(LLVMBuilderRef builder
,
502 const struct pipe_depth_state
*depth
,
503 const struct pipe_stencil_state stencil
[2],
505 const struct util_format_description
*format_desc
,
506 struct lp_build_mask_context
*mask
,
507 LLVMValueRef stencil_refs
[2],
509 LLVMValueRef zs_dst_ptr
,
511 LLVMValueRef counter
)
513 struct lp_build_context bld
;
514 struct lp_build_context sbld
;
515 struct lp_type s_type
;
516 LLVMValueRef zs_dst
, z_dst
= NULL
;
517 LLVMValueRef stencil_vals
= NULL
;
518 LLVMValueRef z_bitmask
= NULL
, stencil_shift
= NULL
;
519 LLVMValueRef z_pass
= NULL
, s_pass_mask
= NULL
;
520 LLVMValueRef orig_mask
= mask
->value
;
522 /* Sanity checking */
524 const unsigned z_swizzle
= format_desc
->swizzle
[0];
525 const unsigned s_swizzle
= format_desc
->swizzle
[1];
527 assert(z_swizzle
!= UTIL_FORMAT_SWIZZLE_NONE
||
528 s_swizzle
!= UTIL_FORMAT_SWIZZLE_NONE
);
530 assert(depth
->enabled
|| stencil
[0].enabled
);
532 assert(format_desc
->colorspace
== UTIL_FORMAT_COLORSPACE_ZS
);
533 assert(format_desc
->block
.width
== 1);
534 assert(format_desc
->block
.height
== 1);
536 if (stencil
[0].enabled
) {
537 assert(format_desc
->format
== PIPE_FORMAT_Z24_UNORM_S8_USCALED
||
538 format_desc
->format
== PIPE_FORMAT_S8_USCALED_Z24_UNORM
);
541 assert(z_swizzle
< 4);
542 assert(format_desc
->block
.bits
== type
.width
);
544 assert(z_swizzle
== 0);
545 assert(format_desc
->channel
[z_swizzle
].type
==
546 UTIL_FORMAT_TYPE_FLOAT
);
547 assert(format_desc
->channel
[z_swizzle
].size
==
548 format_desc
->block
.bits
);
551 assert(format_desc
->channel
[z_swizzle
].type
==
552 UTIL_FORMAT_TYPE_UNSIGNED
);
553 assert(format_desc
->channel
[z_swizzle
].normalized
);
561 /* Setup build context for Z vals */
562 lp_build_context_init(&bld
, builder
, type
);
564 /* Setup build context for stencil vals */
565 s_type
= lp_type_int_vec(type
.width
);
566 lp_build_context_init(&sbld
, builder
, s_type
);
568 /* Load current z/stencil value from z/stencil buffer */
569 zs_dst
= LLVMBuildLoad(builder
, zs_dst_ptr
, "");
571 lp_build_name(zs_dst
, "zsbufval");
574 /* Compute and apply the Z/stencil bitmasks and shifts.
577 unsigned z_shift
, z_mask
;
578 unsigned s_shift
, s_mask
;
580 if (get_z_shift_and_mask(format_desc
, &z_shift
, &z_mask
)) {
582 LLVMValueRef shift
= lp_build_const_int_vec(type
, z_shift
);
583 z_src
= LLVMBuildLShr(builder
, z_src
, shift
, "");
586 if (z_mask
!= 0xffffffff) {
587 LLVMValueRef mask
= lp_build_const_int_vec(type
, z_mask
);
588 z_src
= LLVMBuildAnd(builder
, z_src
, mask
, "");
589 z_dst
= LLVMBuildAnd(builder
, zs_dst
, mask
, "");
590 z_bitmask
= mask
; /* used below */
596 lp_build_name(z_dst
, "zsbuf.z");
599 if (get_s_shift_and_mask(format_desc
, &s_shift
, &s_mask
)) {
601 LLVMValueRef shift
= lp_build_const_int_vec(type
, s_shift
);
602 stencil_vals
= LLVMBuildLShr(builder
, zs_dst
, shift
, "");
603 stencil_shift
= shift
; /* used below */
606 stencil_vals
= zs_dst
;
609 if (s_mask
!= 0xffffffff) {
610 LLVMValueRef mask
= lp_build_const_int_vec(type
, s_mask
);
611 stencil_vals
= LLVMBuildAnd(builder
, stencil_vals
, mask
, "");
614 lp_build_name(stencil_vals
, "stencil");
619 if (stencil
[0].enabled
) {
620 /* convert scalar stencil refs into vectors */
621 stencil_refs
[0] = lp_build_broadcast_scalar(&bld
, stencil_refs
[0]);
622 stencil_refs
[1] = lp_build_broadcast_scalar(&bld
, stencil_refs
[1]);
624 s_pass_mask
= lp_build_stencil_test(&sbld
, stencil
,
625 stencil_refs
, stencil_vals
, face
);
627 /* apply stencil-fail operator */
629 LLVMValueRef s_fail_mask
= lp_build_andc(&bld
, orig_mask
, s_pass_mask
);
630 stencil_vals
= lp_build_stencil_op(&sbld
, stencil
, S_FAIL_OP
,
631 stencil_refs
, stencil_vals
,
636 if (depth
->enabled
) {
637 /* compare src Z to dst Z, returning 'pass' mask */
638 z_pass
= lp_build_cmp(&bld
, depth
->func
, z_src
, z_dst
);
640 if (!stencil
[0].enabled
) {
641 /* We can potentially skip all remaining operations here, but only
642 * if stencil is disabled because we still need to update the stencil
643 * buffer values. Don't need to update Z buffer values.
645 lp_build_mask_update(mask
, z_pass
);
648 if (depth
->writemask
) {
649 LLVMValueRef zselectmask
= mask
->value
;
651 /* mask off bits that failed Z test */
652 zselectmask
= LLVMBuildAnd(builder
, zselectmask
, z_pass
, "");
654 /* mask off bits that failed stencil test */
656 zselectmask
= LLVMBuildAnd(builder
, zselectmask
, s_pass_mask
, "");
659 /* if combined Z/stencil format, mask off the stencil bits */
661 zselectmask
= LLVMBuildAnd(builder
, zselectmask
, z_bitmask
, "");
664 /* Mix the old and new Z buffer values.
665 * z_dst[i] = zselectmask[i] ? z_src[i] : z_dst[i]
667 z_dst
= lp_build_select(&bld
, zselectmask
, z_src
, z_dst
);
670 if (stencil
[0].enabled
) {
671 /* update stencil buffer values according to z pass/fail result */
672 LLVMValueRef z_fail_mask
, z_pass_mask
;
674 /* apply Z-fail operator */
675 z_fail_mask
= lp_build_andc(&bld
, orig_mask
, z_pass
);
676 stencil_vals
= lp_build_stencil_op(&sbld
, stencil
, Z_FAIL_OP
,
677 stencil_refs
, stencil_vals
,
680 /* apply Z-pass operator */
681 z_pass_mask
= LLVMBuildAnd(bld
.builder
, orig_mask
, z_pass
, "");
682 stencil_vals
= lp_build_stencil_op(&sbld
, stencil
, Z_PASS_OP
,
683 stencil_refs
, stencil_vals
,
688 /* No depth test: apply Z-pass operator to stencil buffer values which
689 * passed the stencil test.
691 s_pass_mask
= LLVMBuildAnd(bld
.builder
, orig_mask
, s_pass_mask
, "");
692 stencil_vals
= lp_build_stencil_op(&sbld
, stencil
, Z_PASS_OP
,
693 stencil_refs
, stencil_vals
,
697 /* The Z bits are already in the right place but we may need to shift the
698 * stencil bits before ORing Z with Stencil to make the final pixel value.
700 if (stencil_vals
&& stencil_shift
)
701 stencil_vals
= LLVMBuildShl(bld
.builder
, stencil_vals
,
704 /* Finally, merge/store the z/stencil values */
705 if ((depth
->enabled
&& depth
->writemask
) ||
706 (stencil
[0].enabled
&& stencil
[0].writemask
)) {
708 if (z_dst
&& stencil_vals
)
709 zs_dst
= LLVMBuildOr(bld
.builder
, z_dst
, stencil_vals
, "");
713 zs_dst
= stencil_vals
;
715 LLVMBuildStore(builder
, zs_dst
, zs_dst_ptr
);
719 lp_build_mask_update(mask
, s_pass_mask
);
721 if (depth
->enabled
&& stencil
[0].enabled
)
722 lp_build_mask_update(mask
, z_pass
);
725 lp_build_occlusion_count(builder
, type
, mask
->value
, counter
);