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 * Texture sampling -- SoA.
32 * @author Jose Fonseca <jfonseca@vmware.com>
33 * @author Brian Paul <brianp@vmware.com>
36 #include "pipe/p_defines.h"
37 #include "pipe/p_state.h"
38 #include "pipe/p_shader_tokens.h"
39 #include "util/u_debug.h"
40 #include "util/u_dump.h"
41 #include "util/u_memory.h"
42 #include "util/u_math.h"
43 #include "util/u_format.h"
44 #include "util/u_cpu_detect.h"
45 #include "util/format_rgb9e5.h"
46 #include "lp_bld_debug.h"
47 #include "lp_bld_type.h"
48 #include "lp_bld_const.h"
49 #include "lp_bld_conv.h"
50 #include "lp_bld_arit.h"
51 #include "lp_bld_bitarit.h"
52 #include "lp_bld_logic.h"
53 #include "lp_bld_printf.h"
54 #include "lp_bld_swizzle.h"
55 #include "lp_bld_flow.h"
56 #include "lp_bld_gather.h"
57 #include "lp_bld_format.h"
58 #include "lp_bld_sample.h"
59 #include "lp_bld_sample_aos.h"
60 #include "lp_bld_struct.h"
61 #include "lp_bld_quad.h"
62 #include "lp_bld_pack.h"
63 #include "lp_bld_intr.h"
64 #include "lp_bld_misc.h"
68 * Generate code to fetch a texel from a texture at int coords (x, y, z).
69 * The computation depends on whether the texture is 1D, 2D or 3D.
70 * The result, texel, will be float vectors:
71 * texel[0] = red values
72 * texel[1] = green values
73 * texel[2] = blue values
74 * texel[3] = alpha values
77 lp_build_sample_texel_soa(struct lp_build_sample_context
*bld
,
84 LLVMValueRef y_stride
,
85 LLVMValueRef z_stride
,
86 LLVMValueRef data_ptr
,
87 LLVMValueRef mipoffsets
,
88 LLVMValueRef texel_out
[4])
90 const struct lp_static_sampler_state
*static_state
= bld
->static_sampler_state
;
91 const unsigned dims
= bld
->dims
;
92 struct lp_build_context
*int_coord_bld
= &bld
->int_coord_bld
;
93 LLVMBuilderRef builder
= bld
->gallivm
->builder
;
96 LLVMValueRef use_border
= NULL
;
98 /* use_border = x < 0 || x >= width || y < 0 || y >= height */
99 if (lp_sampler_wrap_mode_uses_border_color(static_state
->wrap_s
,
100 static_state
->min_img_filter
,
101 static_state
->mag_img_filter
)) {
103 b1
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_LESS
, x
, int_coord_bld
->zero
);
104 b2
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_GEQUAL
, x
, width
);
105 use_border
= LLVMBuildOr(builder
, b1
, b2
, "b1_or_b2");
109 lp_sampler_wrap_mode_uses_border_color(static_state
->wrap_t
,
110 static_state
->min_img_filter
,
111 static_state
->mag_img_filter
)) {
113 b1
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_LESS
, y
, int_coord_bld
->zero
);
114 b2
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_GEQUAL
, y
, height
);
116 use_border
= LLVMBuildOr(builder
, use_border
, b1
, "ub_or_b1");
117 use_border
= LLVMBuildOr(builder
, use_border
, b2
, "ub_or_b2");
120 use_border
= LLVMBuildOr(builder
, b1
, b2
, "b1_or_b2");
125 lp_sampler_wrap_mode_uses_border_color(static_state
->wrap_r
,
126 static_state
->min_img_filter
,
127 static_state
->mag_img_filter
)) {
129 b1
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_LESS
, z
, int_coord_bld
->zero
);
130 b2
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_GEQUAL
, z
, depth
);
132 use_border
= LLVMBuildOr(builder
, use_border
, b1
, "ub_or_b1");
133 use_border
= LLVMBuildOr(builder
, use_border
, b2
, "ub_or_b2");
136 use_border
= LLVMBuildOr(builder
, b1
, b2
, "b1_or_b2");
140 /* convert x,y,z coords to linear offset from start of texture, in bytes */
141 lp_build_sample_offset(&bld
->int_coord_bld
,
143 x
, y
, z
, y_stride
, z_stride
,
146 offset
= lp_build_add(&bld
->int_coord_bld
, offset
, mipoffsets
);
150 /* If we can sample the border color, it means that texcoords may
151 * lie outside the bounds of the texture image. We need to do
152 * something to prevent reading out of bounds and causing a segfault.
154 * Simply AND the texture coords with !use_border. This will cause
155 * coords which are out of bounds to become zero. Zero's guaranteed
156 * to be inside the texture image.
158 offset
= lp_build_andnot(&bld
->int_coord_bld
, offset
, use_border
);
161 lp_build_fetch_rgba_soa(bld
->gallivm
,
163 bld
->texel_type
, TRUE
,
170 * Note: if we find an app which frequently samples the texture border
171 * we might want to implement a true conditional here to avoid sampling
172 * the texture whenever possible (since that's quite a bit of code).
175 * texel = border_color;
178 * texel = sample_texture(coord);
180 * As it is now, we always sample the texture, then selectively replace
181 * the texel color results with the border color.
185 /* select texel color or border color depending on use_border. */
186 const struct util_format_description
*format_desc
= bld
->format_desc
;
188 struct lp_type border_type
= bld
->texel_type
;
189 border_type
.length
= 4;
191 * Only replace channels which are actually present. The others should
192 * get optimized away eventually by sampler_view swizzle anyway but it's
195 for (chan
= 0; chan
< 4; chan
++) {
197 /* reverse-map channel... */
198 for (chan_s
= 0; chan_s
< 4; chan_s
++) {
199 if (chan_s
== format_desc
->swizzle
[chan
]) {
204 /* use the already clamped color */
205 LLVMValueRef idx
= lp_build_const_int32(bld
->gallivm
, chan
);
206 LLVMValueRef border_chan
;
208 border_chan
= lp_build_extract_broadcast(bld
->gallivm
,
211 bld
->border_color_clamped
,
213 texel_out
[chan
] = lp_build_select(&bld
->texel_bld
, use_border
,
214 border_chan
, texel_out
[chan
]);
222 * Helper to compute the mirror function for the PIPE_WRAP_MIRROR_REPEAT mode.
223 * (Note that with pot sizes could do this much more easily post-scale
224 * with some bit arithmetic.)
227 lp_build_coord_mirror(struct lp_build_sample_context
*bld
,
228 LLVMValueRef coord
, boolean posOnly
)
230 struct lp_build_context
*coord_bld
= &bld
->coord_bld
;
232 LLVMValueRef half
= lp_build_const_vec(bld
->gallivm
, coord_bld
->type
, 0.5);
235 * We can just use 2*(x - round(0.5*x)) to do all the mirroring,
236 * it all works out. (The result is in range [-1, 1.0], negative if
237 * the coord is in the "odd" section, otherwise positive.)
240 coord
= lp_build_mul(coord_bld
, coord
, half
);
241 fract
= lp_build_round(coord_bld
, coord
);
242 fract
= lp_build_sub(coord_bld
, coord
, fract
);
243 coord
= lp_build_add(coord_bld
, fract
, fract
);
247 * Theoretically it's not quite 100% accurate because the spec says
248 * that ultimately a scaled coord of -x.0 should map to int coord
249 * -x + 1 with mirroring, not -x (this does not matter for bilinear
252 coord
= lp_build_abs(coord_bld
, coord
);
254 /* XXX: not safe without arch rounding, fract can be anything. */
255 coord
= lp_build_max_ext(coord_bld
, coord
, coord_bld
->zero
,
256 GALLIVM_NAN_RETURN_OTHER_SECOND_NONNAN
);
264 * Helper to compute the first coord and the weight for
265 * linear wrap repeat npot textures
268 lp_build_coord_repeat_npot_linear(struct lp_build_sample_context
*bld
,
269 LLVMValueRef coord_f
,
270 LLVMValueRef length_i
,
271 LLVMValueRef length_f
,
272 LLVMValueRef
*coord0_i
,
273 LLVMValueRef
*weight_f
)
275 struct lp_build_context
*coord_bld
= &bld
->coord_bld
;
276 struct lp_build_context
*int_coord_bld
= &bld
->int_coord_bld
;
277 LLVMValueRef half
= lp_build_const_vec(bld
->gallivm
, coord_bld
->type
, 0.5);
278 LLVMValueRef length_minus_one
= lp_build_sub(int_coord_bld
, length_i
,
281 /* wrap with normalized floats is just fract */
282 coord_f
= lp_build_fract(coord_bld
, coord_f
);
283 /* mul by size and subtract 0.5 */
284 coord_f
= lp_build_mul(coord_bld
, coord_f
, length_f
);
285 coord_f
= lp_build_sub(coord_bld
, coord_f
, half
);
287 * we avoided the 0.5/length division before the repeat wrap,
288 * now need to fix up edge cases with selects
291 * Note we do a float (unordered) compare so we can eliminate NaNs.
292 * (Otherwise would need fract_safe above).
294 mask
= lp_build_compare(coord_bld
->gallivm
, coord_bld
->type
,
295 PIPE_FUNC_LESS
, coord_f
, coord_bld
->zero
);
297 /* convert to int, compute lerp weight */
298 lp_build_ifloor_fract(coord_bld
, coord_f
, coord0_i
, weight_f
);
299 *coord0_i
= lp_build_select(int_coord_bld
, mask
, length_minus_one
, *coord0_i
);
304 * Build LLVM code for texture wrap mode for linear filtering.
305 * \param x0_out returns first integer texcoord
306 * \param x1_out returns second integer texcoord
307 * \param weight_out returns linear interpolation weight
310 lp_build_sample_wrap_linear(struct lp_build_sample_context
*bld
,
314 LLVMValueRef length_f
,
318 LLVMValueRef
*x0_out
,
319 LLVMValueRef
*x1_out
,
320 LLVMValueRef
*weight_out
)
322 struct lp_build_context
*coord_bld
= &bld
->coord_bld
;
323 struct lp_build_context
*int_coord_bld
= &bld
->int_coord_bld
;
324 LLVMBuilderRef builder
= bld
->gallivm
->builder
;
325 LLVMValueRef half
= lp_build_const_vec(bld
->gallivm
, coord_bld
->type
, 0.5);
326 LLVMValueRef length_minus_one
= lp_build_sub(int_coord_bld
, length
, int_coord_bld
->one
);
327 LLVMValueRef coord0
, coord1
, weight
;
330 case PIPE_TEX_WRAP_REPEAT
:
332 /* mul by size and subtract 0.5 */
333 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
334 coord
= lp_build_sub(coord_bld
, coord
, half
);
336 offset
= lp_build_int_to_float(coord_bld
, offset
);
337 coord
= lp_build_add(coord_bld
, coord
, offset
);
339 /* convert to int, compute lerp weight */
340 lp_build_ifloor_fract(coord_bld
, coord
, &coord0
, &weight
);
341 coord1
= lp_build_add(int_coord_bld
, coord0
, int_coord_bld
->one
);
343 coord0
= LLVMBuildAnd(builder
, coord0
, length_minus_one
, "");
344 coord1
= LLVMBuildAnd(builder
, coord1
, length_minus_one
, "");
349 offset
= lp_build_int_to_float(coord_bld
, offset
);
350 offset
= lp_build_div(coord_bld
, offset
, length_f
);
351 coord
= lp_build_add(coord_bld
, coord
, offset
);
353 lp_build_coord_repeat_npot_linear(bld
, coord
,
356 mask
= lp_build_compare(int_coord_bld
->gallivm
, int_coord_bld
->type
,
357 PIPE_FUNC_NOTEQUAL
, coord0
, length_minus_one
);
358 coord1
= LLVMBuildAnd(builder
,
359 lp_build_add(int_coord_bld
, coord0
, int_coord_bld
->one
),
364 case PIPE_TEX_WRAP_CLAMP
:
365 if (bld
->static_sampler_state
->normalized_coords
) {
366 /* scale coord to length */
367 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
370 offset
= lp_build_int_to_float(coord_bld
, offset
);
371 coord
= lp_build_add(coord_bld
, coord
, offset
);
375 * clamp to [0, length]
377 * Unlike some other wrap modes, this should be correct for gather
378 * too. GL_CLAMP explicitly does this clamp on the coord prior to
379 * actual wrapping (which is per sample).
381 coord
= lp_build_clamp(coord_bld
, coord
, coord_bld
->zero
, length_f
);
383 coord
= lp_build_sub(coord_bld
, coord
, half
);
385 /* convert to int, compute lerp weight */
386 lp_build_ifloor_fract(coord_bld
, coord
, &coord0
, &weight
);
387 coord1
= lp_build_add(int_coord_bld
, coord0
, int_coord_bld
->one
);
390 case PIPE_TEX_WRAP_CLAMP_TO_EDGE
:
392 struct lp_build_context abs_coord_bld
= bld
->coord_bld
;
393 abs_coord_bld
.type
.sign
= FALSE
;
395 if (bld
->static_sampler_state
->normalized_coords
) {
396 /* mul by tex size */
397 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
400 offset
= lp_build_int_to_float(coord_bld
, offset
);
401 coord
= lp_build_add(coord_bld
, coord
, offset
);
404 /* clamp to length max */
405 coord
= lp_build_min_ext(coord_bld
, coord
, length_f
,
406 GALLIVM_NAN_RETURN_OTHER_SECOND_NONNAN
);
409 coord
= lp_build_sub(coord_bld
, coord
, half
);
410 /* clamp to [0, length - 0.5] */
411 coord
= lp_build_max(coord_bld
, coord
, coord_bld
->zero
);
412 /* convert to int, compute lerp weight */
413 lp_build_ifloor_fract(&abs_coord_bld
, coord
, &coord0
, &weight
);
414 coord1
= lp_build_add(int_coord_bld
, coord0
, int_coord_bld
->one
);
417 * The non-gather path will end up with coords 0, 1 if coord was
418 * smaller than 0.5 (with corresponding weight 0.0 so it doesn't
419 * really matter what the second coord is). But for gather, we
420 * really need to end up with coords 0, 0.
422 coord
= lp_build_max(coord_bld
, coord
, coord_bld
->zero
);
423 coord0
= lp_build_sub(coord_bld
, coord
, half
);
424 coord1
= lp_build_add(coord_bld
, coord
, half
);
425 /* Values range ([-0.5, length_f - 0.5], [0.5, length_f + 0.5] */
426 coord0
= lp_build_itrunc(coord_bld
, coord0
);
427 coord1
= lp_build_itrunc(coord_bld
, coord1
);
428 weight
= coord_bld
->undef
;
430 /* coord1 = min(coord1, length-1) */
431 coord1
= lp_build_min(int_coord_bld
, coord1
, length_minus_one
);
435 case PIPE_TEX_WRAP_CLAMP_TO_BORDER
:
436 if (bld
->static_sampler_state
->normalized_coords
) {
437 /* scale coord to length */
438 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
441 offset
= lp_build_int_to_float(coord_bld
, offset
);
442 coord
= lp_build_add(coord_bld
, coord
, offset
);
445 * We don't need any clamp. Technically, for very large (pos or neg)
446 * (or infinite) values, clamp against [-length, length] would be
447 * correct, but we don't need to guarantee any specific
448 * result for such coords (the ifloor will be undefined, but for modes
449 * requiring border all resulting coords are safe).
451 coord
= lp_build_sub(coord_bld
, coord
, half
);
452 /* convert to int, compute lerp weight */
453 lp_build_ifloor_fract(coord_bld
, coord
, &coord0
, &weight
);
454 coord1
= lp_build_add(int_coord_bld
, coord0
, int_coord_bld
->one
);
457 case PIPE_TEX_WRAP_MIRROR_REPEAT
:
459 offset
= lp_build_int_to_float(coord_bld
, offset
);
460 offset
= lp_build_div(coord_bld
, offset
, length_f
);
461 coord
= lp_build_add(coord_bld
, coord
, offset
);
464 /* compute mirror function */
465 coord
= lp_build_coord_mirror(bld
, coord
, TRUE
);
467 /* scale coord to length */
468 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
469 coord
= lp_build_sub(coord_bld
, coord
, half
);
471 /* convert to int, compute lerp weight */
472 lp_build_ifloor_fract(coord_bld
, coord
, &coord0
, &weight
);
473 coord1
= lp_build_add(int_coord_bld
, coord0
, int_coord_bld
->one
);
475 /* coord0 = max(coord0, 0) */
476 coord0
= lp_build_max(int_coord_bld
, coord0
, int_coord_bld
->zero
);
477 /* coord1 = min(coord1, length-1) */
478 coord1
= lp_build_min(int_coord_bld
, coord1
, length_minus_one
);
481 * This is pretty reasonable in the end, all what the tests care
482 * about is nasty edge cases (scaled coords x.5, so the individual
483 * coords are actually integers, which is REALLY tricky to get right
484 * due to this working differently both for negative numbers as well
485 * as for even/odd cases). But with enough magic it's not too complex
487 * Maybe should try a bit arithmetic one though for POT textures...
491 * Wrapping just once still works, even though it means we can
492 * get "wrong" sign due to performing mirror in the middle of the
493 * two coords (because this can only happen very near the odd/even
494 * edges, so both coords will actually end up as 0 or length - 1
496 * For GL4 gather with per-sample offsets we'd need to the mirroring
499 coord
= lp_build_coord_mirror(bld
, coord
, FALSE
);
500 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
503 * NaNs should be safe here, we'll do away with them with
504 * the ones' complement plus min.
506 coord0
= lp_build_sub(coord_bld
, coord
, half
);
507 coord0
= lp_build_ifloor(coord_bld
, coord0
);
508 coord1
= lp_build_add(int_coord_bld
, coord0
, int_coord_bld
->one
);
509 /* ones complement for neg numbers (mirror(negX) = X - 1) */
510 isNeg
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_LESS
,
511 coord0
, int_coord_bld
->zero
);
512 coord0
= lp_build_xor(int_coord_bld
, coord0
, isNeg
);
513 isNeg
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_LESS
,
514 coord1
, int_coord_bld
->zero
);
515 coord1
= lp_build_xor(int_coord_bld
, coord1
, isNeg
);
516 coord0
= lp_build_min(int_coord_bld
, coord0
, length_minus_one
);
517 coord1
= lp_build_min(int_coord_bld
, coord1
, length_minus_one
);
519 weight
= coord_bld
->undef
;
523 case PIPE_TEX_WRAP_MIRROR_CLAMP
:
524 if (bld
->static_sampler_state
->normalized_coords
) {
525 /* scale coord to length */
526 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
529 offset
= lp_build_int_to_float(coord_bld
, offset
);
530 coord
= lp_build_add(coord_bld
, coord
, offset
);
533 * XXX: probably not correct for gather, albeit I'm not
534 * entirely sure as it's poorly specified. The wrapping looks
535 * correct according to the spec which is against gl 1.2.1,
536 * however negative values will be swapped - gl re-specified
537 * wrapping with newer versions (no more pre-clamp except with
540 coord
= lp_build_abs(coord_bld
, coord
);
542 /* clamp to [0, length] */
543 coord
= lp_build_min_ext(coord_bld
, coord
, length_f
,
544 GALLIVM_NAN_RETURN_OTHER_SECOND_NONNAN
);
546 coord
= lp_build_sub(coord_bld
, coord
, half
);
548 /* convert to int, compute lerp weight */
549 lp_build_ifloor_fract(coord_bld
, coord
, &coord0
, &weight
);
550 coord1
= lp_build_add(int_coord_bld
, coord0
, int_coord_bld
->one
);
553 case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE
:
555 struct lp_build_context abs_coord_bld
= bld
->coord_bld
;
556 abs_coord_bld
.type
.sign
= FALSE
;
558 if (bld
->static_sampler_state
->normalized_coords
) {
559 /* scale coord to length */
560 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
563 offset
= lp_build_int_to_float(coord_bld
, offset
);
564 coord
= lp_build_add(coord_bld
, coord
, offset
);
567 coord
= lp_build_abs(coord_bld
, coord
);
569 /* clamp to length max */
570 coord
= lp_build_min_ext(coord_bld
, coord
, length_f
,
571 GALLIVM_NAN_RETURN_OTHER_SECOND_NONNAN
);
573 coord
= lp_build_sub(coord_bld
, coord
, half
);
574 /* clamp to [0, length - 0.5] */
575 coord
= lp_build_max(coord_bld
, coord
, coord_bld
->zero
);
577 /* convert to int, compute lerp weight */
578 lp_build_ifloor_fract(&abs_coord_bld
, coord
, &coord0
, &weight
);
579 coord1
= lp_build_add(int_coord_bld
, coord0
, int_coord_bld
->one
);
580 /* coord1 = min(coord1, length-1) */
581 coord1
= lp_build_min(int_coord_bld
, coord1
, length_minus_one
);
584 * The non-gather path will swap coord0/1 if coord was negative,
585 * which is ok for filtering since the filter weight matches
586 * accordingly. Also, if coord is close to zero, coord0/1 will
587 * be 0 and 1, instead of 0 and 0 (again ok due to filter
588 * weight being 0.0). Both issues need to be fixed for gather.
593 * Actually wanted to cheat here and use:
594 * coord1 = lp_build_iround(coord_bld, coord);
595 * but it's not good enough for some tests (even piglit
596 * textureGather is set up in a way so the coords area always
597 * .5, that is right at the crossover points).
598 * So do ordinary sub/floor, then do ones' complement
599 * for negative numbers.
600 * (Note can't just do sub|add/abs/itrunc per coord neither -
601 * because the spec demands that mirror(3.0) = 3 but
604 coord
= lp_build_sub(coord_bld
, coord
, half
);
605 coord0
= lp_build_ifloor(coord_bld
, coord
);
606 coord1
= lp_build_add(int_coord_bld
, coord0
, int_coord_bld
->one
);
607 isNeg
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_LESS
, coord0
,
608 int_coord_bld
->zero
);
609 coord0
= lp_build_xor(int_coord_bld
, isNeg
, coord0
);
610 coord0
= lp_build_min(int_coord_bld
, coord0
, length_minus_one
);
612 isNeg
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_LESS
, coord1
,
613 int_coord_bld
->zero
);
614 coord1
= lp_build_xor(int_coord_bld
, isNeg
, coord1
);
615 coord1
= lp_build_min(int_coord_bld
, coord1
, length_minus_one
);
617 weight
= coord_bld
->undef
;
622 case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER
:
624 if (bld
->static_sampler_state
->normalized_coords
) {
625 /* scale coord to length */
626 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
629 offset
= lp_build_int_to_float(coord_bld
, offset
);
630 coord
= lp_build_add(coord_bld
, coord
, offset
);
633 * XXX: probably not correct for gather due to swapped
634 * order if coord is negative (same rationale as for
637 coord
= lp_build_abs(coord_bld
, coord
);
640 * We don't need any clamp. Technically, for very large
641 * (or infinite) values, clamp against length would be
642 * correct, but we don't need to guarantee any specific
643 * result for such coords (the ifloor will be undefined, but
644 * for modes requiring border all resulting coords are safe).
646 coord
= lp_build_sub(coord_bld
, coord
, half
);
648 /* convert to int, compute lerp weight */
649 lp_build_ifloor_fract(coord_bld
, coord
, &coord0
, &weight
);
650 coord1
= lp_build_add(int_coord_bld
, coord0
, int_coord_bld
->one
);
663 *weight_out
= weight
;
668 * Build LLVM code for texture wrap mode for nearest filtering.
669 * \param coord the incoming texcoord (nominally in [0,1])
670 * \param length the texture size along one dimension, as int vector
671 * \param length_f the texture size along one dimension, as float vector
672 * \param offset texel offset along one dimension (as int vector)
673 * \param is_pot if TRUE, length is a power of two
674 * \param wrap_mode one of PIPE_TEX_WRAP_x
677 lp_build_sample_wrap_nearest(struct lp_build_sample_context
*bld
,
680 LLVMValueRef length_f
,
685 struct lp_build_context
*coord_bld
= &bld
->coord_bld
;
686 struct lp_build_context
*int_coord_bld
= &bld
->int_coord_bld
;
687 LLVMBuilderRef builder
= bld
->gallivm
->builder
;
688 LLVMValueRef length_minus_one
= lp_build_sub(int_coord_bld
, length
, int_coord_bld
->one
);
692 case PIPE_TEX_WRAP_REPEAT
:
694 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
695 icoord
= lp_build_ifloor(coord_bld
, coord
);
697 icoord
= lp_build_add(int_coord_bld
, icoord
, offset
);
699 icoord
= LLVMBuildAnd(builder
, icoord
, length_minus_one
, "");
703 offset
= lp_build_int_to_float(coord_bld
, offset
);
704 offset
= lp_build_div(coord_bld
, offset
, length_f
);
705 coord
= lp_build_add(coord_bld
, coord
, offset
);
707 /* take fraction, unnormalize */
708 coord
= lp_build_fract_safe(coord_bld
, coord
);
709 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
710 icoord
= lp_build_itrunc(coord_bld
, coord
);
714 case PIPE_TEX_WRAP_CLAMP
:
715 case PIPE_TEX_WRAP_CLAMP_TO_EDGE
:
716 if (bld
->static_sampler_state
->normalized_coords
) {
717 /* scale coord to length */
718 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
722 offset
= lp_build_int_to_float(coord_bld
, offset
);
723 coord
= lp_build_add(coord_bld
, coord
, offset
);
726 /* use itrunc instead since we clamp to 0 anyway */
727 icoord
= lp_build_itrunc(coord_bld
, coord
);
729 /* clamp to [0, length - 1]. */
730 icoord
= lp_build_clamp(int_coord_bld
, icoord
, int_coord_bld
->zero
,
734 case PIPE_TEX_WRAP_CLAMP_TO_BORDER
:
735 if (bld
->static_sampler_state
->normalized_coords
) {
736 /* scale coord to length */
737 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
739 /* no clamp necessary, border masking will handle this */
740 icoord
= lp_build_ifloor(coord_bld
, coord
);
742 icoord
= lp_build_add(int_coord_bld
, icoord
, offset
);
746 case PIPE_TEX_WRAP_MIRROR_REPEAT
:
748 offset
= lp_build_int_to_float(coord_bld
, offset
);
749 offset
= lp_build_div(coord_bld
, offset
, length_f
);
750 coord
= lp_build_add(coord_bld
, coord
, offset
);
752 /* compute mirror function */
753 coord
= lp_build_coord_mirror(bld
, coord
, TRUE
);
755 /* scale coord to length */
756 assert(bld
->static_sampler_state
->normalized_coords
);
757 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
759 /* itrunc == ifloor here */
760 icoord
= lp_build_itrunc(coord_bld
, coord
);
762 /* clamp to [0, length - 1] */
763 icoord
= lp_build_min(int_coord_bld
, icoord
, length_minus_one
);
766 case PIPE_TEX_WRAP_MIRROR_CLAMP
:
767 case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE
:
768 if (bld
->static_sampler_state
->normalized_coords
) {
769 /* scale coord to length */
770 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
773 offset
= lp_build_int_to_float(coord_bld
, offset
);
774 coord
= lp_build_add(coord_bld
, coord
, offset
);
776 coord
= lp_build_abs(coord_bld
, coord
);
778 /* itrunc == ifloor here */
779 icoord
= lp_build_itrunc(coord_bld
, coord
);
781 * Use unsigned min due to possible undef values (NaNs, overflow)
784 struct lp_build_context abs_coord_bld
= *int_coord_bld
;
785 abs_coord_bld
.type
.sign
= FALSE
;
786 /* clamp to [0, length - 1] */
787 icoord
= lp_build_min(&abs_coord_bld
, icoord
, length_minus_one
);
791 case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER
:
792 if (bld
->static_sampler_state
->normalized_coords
) {
793 /* scale coord to length */
794 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
797 offset
= lp_build_int_to_float(coord_bld
, offset
);
798 coord
= lp_build_add(coord_bld
, coord
, offset
);
800 coord
= lp_build_abs(coord_bld
, coord
);
802 /* itrunc == ifloor here */
803 icoord
= lp_build_itrunc(coord_bld
, coord
);
816 * Do shadow test/comparison.
817 * \param p shadow ref value
818 * \param texel the texel to compare against
821 lp_build_sample_comparefunc(struct lp_build_sample_context
*bld
,
825 struct lp_build_context
*texel_bld
= &bld
->texel_bld
;
829 //lp_build_print_value(bld->gallivm, "shadow cmp coord", p);
830 lp_build_print_value(bld
->gallivm
, "shadow cmp texel", texel
);
833 /* result = (p FUNC texel) ? 1 : 0 */
835 * honor d3d10 floating point rules here, which state that comparisons
836 * are ordered except NOT_EQUAL which is unordered.
838 if (bld
->static_sampler_state
->compare_func
!= PIPE_FUNC_NOTEQUAL
) {
839 res
= lp_build_cmp_ordered(texel_bld
, bld
->static_sampler_state
->compare_func
,
843 res
= lp_build_cmp(texel_bld
, bld
->static_sampler_state
->compare_func
,
851 * Generate code to sample a mipmap level with nearest filtering.
852 * If sampling a cube texture, r = cube face in [0,5].
855 lp_build_sample_image_nearest(struct lp_build_sample_context
*bld
,
857 LLVMValueRef row_stride_vec
,
858 LLVMValueRef img_stride_vec
,
859 LLVMValueRef data_ptr
,
860 LLVMValueRef mipoffsets
,
861 const LLVMValueRef
*coords
,
862 const LLVMValueRef
*offsets
,
863 LLVMValueRef colors_out
[4])
865 const unsigned dims
= bld
->dims
;
866 LLVMValueRef width_vec
;
867 LLVMValueRef height_vec
;
868 LLVMValueRef depth_vec
;
869 LLVMValueRef flt_size
;
870 LLVMValueRef flt_width_vec
;
871 LLVMValueRef flt_height_vec
;
872 LLVMValueRef flt_depth_vec
;
873 LLVMValueRef x
, y
= NULL
, z
= NULL
;
875 lp_build_extract_image_sizes(bld
,
879 &width_vec
, &height_vec
, &depth_vec
);
881 flt_size
= lp_build_int_to_float(&bld
->float_size_bld
, size
);
883 lp_build_extract_image_sizes(bld
,
884 &bld
->float_size_bld
,
887 &flt_width_vec
, &flt_height_vec
, &flt_depth_vec
);
890 * Compute integer texcoords.
892 x
= lp_build_sample_wrap_nearest(bld
, coords
[0], width_vec
,
893 flt_width_vec
, offsets
[0],
894 bld
->static_texture_state
->pot_width
,
895 bld
->static_sampler_state
->wrap_s
);
896 lp_build_name(x
, "tex.x.wrapped");
899 y
= lp_build_sample_wrap_nearest(bld
, coords
[1], height_vec
,
900 flt_height_vec
, offsets
[1],
901 bld
->static_texture_state
->pot_height
,
902 bld
->static_sampler_state
->wrap_t
);
903 lp_build_name(y
, "tex.y.wrapped");
906 z
= lp_build_sample_wrap_nearest(bld
, coords
[2], depth_vec
,
907 flt_depth_vec
, offsets
[2],
908 bld
->static_texture_state
->pot_depth
,
909 bld
->static_sampler_state
->wrap_r
);
910 lp_build_name(z
, "tex.z.wrapped");
913 if (has_layer_coord(bld
->static_texture_state
->target
)) {
914 if (bld
->static_texture_state
->target
== PIPE_TEXTURE_CUBE_ARRAY
) {
915 /* add cube layer to face */
916 z
= lp_build_add(&bld
->int_coord_bld
, coords
[2], coords
[3]);
921 lp_build_name(z
, "tex.z.layer");
925 * Get texture colors.
927 lp_build_sample_texel_soa(bld
,
928 width_vec
, height_vec
, depth_vec
,
930 row_stride_vec
, img_stride_vec
,
931 data_ptr
, mipoffsets
, colors_out
);
933 if (bld
->static_sampler_state
->compare_mode
!= PIPE_TEX_COMPARE_NONE
) {
935 cmpval
= lp_build_sample_comparefunc(bld
, coords
[4], colors_out
[0]);
936 /* this is really just a AND 1.0, cmpval but llvm is clever enough */
937 colors_out
[0] = lp_build_select(&bld
->texel_bld
, cmpval
,
938 bld
->texel_bld
.one
, bld
->texel_bld
.zero
);
939 colors_out
[1] = colors_out
[2] = colors_out
[3] = colors_out
[0];
946 * Like a lerp, but inputs are 0/~0 masks, so can simplify slightly.
949 lp_build_masklerp(struct lp_build_context
*bld
,
954 struct gallivm_state
*gallivm
= bld
->gallivm
;
955 LLVMBuilderRef builder
= gallivm
->builder
;
956 LLVMValueRef weight2
;
958 weight2
= lp_build_sub(bld
, bld
->one
, weight
);
959 weight
= LLVMBuildBitCast(builder
, weight
,
960 lp_build_int_vec_type(gallivm
, bld
->type
), "");
961 weight2
= LLVMBuildBitCast(builder
, weight2
,
962 lp_build_int_vec_type(gallivm
, bld
->type
), "");
963 weight
= LLVMBuildAnd(builder
, weight
, mask1
, "");
964 weight2
= LLVMBuildAnd(builder
, weight2
, mask0
, "");
965 weight
= LLVMBuildBitCast(builder
, weight
, bld
->vec_type
, "");
966 weight2
= LLVMBuildBitCast(builder
, weight2
, bld
->vec_type
, "");
967 return lp_build_add(bld
, weight
, weight2
);
971 * Like a 2d lerp, but inputs are 0/~0 masks, so can simplify slightly.
974 lp_build_masklerp2d(struct lp_build_context
*bld
,
975 LLVMValueRef weight0
,
976 LLVMValueRef weight1
,
982 LLVMValueRef val0
= lp_build_masklerp(bld
, weight0
, mask00
, mask01
);
983 LLVMValueRef val1
= lp_build_masklerp(bld
, weight0
, mask10
, mask11
);
984 return lp_build_lerp(bld
, weight1
, val0
, val1
, 0);
988 * this is a bit excessive code for something OpenGL just recommends
989 * but does not require.
991 #define ACCURATE_CUBE_CORNERS 1
994 * Generate code to sample a mipmap level with linear filtering.
995 * If sampling a cube texture, r = cube face in [0,5].
996 * If linear_mask is present, only pixels having their mask set
997 * will receive linear filtering, the rest will use nearest.
1000 lp_build_sample_image_linear(struct lp_build_sample_context
*bld
,
1003 LLVMValueRef linear_mask
,
1004 LLVMValueRef row_stride_vec
,
1005 LLVMValueRef img_stride_vec
,
1006 LLVMValueRef data_ptr
,
1007 LLVMValueRef mipoffsets
,
1008 const LLVMValueRef
*coords
,
1009 const LLVMValueRef
*offsets
,
1010 LLVMValueRef colors_out
[4])
1012 LLVMBuilderRef builder
= bld
->gallivm
->builder
;
1013 struct lp_build_context
*ivec_bld
= &bld
->int_coord_bld
;
1014 struct lp_build_context
*coord_bld
= &bld
->coord_bld
;
1015 struct lp_build_context
*texel_bld
= &bld
->texel_bld
;
1016 const unsigned dims
= bld
->dims
;
1017 LLVMValueRef width_vec
;
1018 LLVMValueRef height_vec
;
1019 LLVMValueRef depth_vec
;
1020 LLVMValueRef flt_size
;
1021 LLVMValueRef flt_width_vec
;
1022 LLVMValueRef flt_height_vec
;
1023 LLVMValueRef flt_depth_vec
;
1024 LLVMValueRef fall_off
[4], have_corners
;
1025 LLVMValueRef z1
= NULL
;
1026 LLVMValueRef z00
= NULL
, z01
= NULL
, z10
= NULL
, z11
= NULL
;
1027 LLVMValueRef x00
= NULL
, x01
= NULL
, x10
= NULL
, x11
= NULL
;
1028 LLVMValueRef y00
= NULL
, y01
= NULL
, y10
= NULL
, y11
= NULL
;
1029 LLVMValueRef s_fpart
, t_fpart
= NULL
, r_fpart
= NULL
;
1030 LLVMValueRef xs
[4], ys
[4], zs
[4];
1031 LLVMValueRef neighbors
[2][2][4];
1032 int chan
, texel_index
;
1033 boolean seamless_cube_filter
, accurate_cube_corners
;
1034 unsigned chan_swiz
= bld
->static_texture_state
->swizzle_r
;
1036 seamless_cube_filter
= (bld
->static_texture_state
->target
== PIPE_TEXTURE_CUBE
||
1037 bld
->static_texture_state
->target
== PIPE_TEXTURE_CUBE_ARRAY
) &&
1038 bld
->static_sampler_state
->seamless_cube_map
;
1040 accurate_cube_corners
= ACCURATE_CUBE_CORNERS
&& seamless_cube_filter
;
1042 lp_build_extract_image_sizes(bld
,
1044 bld
->int_coord_type
,
1046 &width_vec
, &height_vec
, &depth_vec
);
1048 flt_size
= lp_build_int_to_float(&bld
->float_size_bld
, size
);
1050 lp_build_extract_image_sizes(bld
,
1051 &bld
->float_size_bld
,
1054 &flt_width_vec
, &flt_height_vec
, &flt_depth_vec
);
1057 * Compute integer texcoords.
1060 if (!seamless_cube_filter
) {
1061 lp_build_sample_wrap_linear(bld
, is_gather
, coords
[0], width_vec
,
1062 flt_width_vec
, offsets
[0],
1063 bld
->static_texture_state
->pot_width
,
1064 bld
->static_sampler_state
->wrap_s
,
1065 &x00
, &x01
, &s_fpart
);
1066 lp_build_name(x00
, "tex.x0.wrapped");
1067 lp_build_name(x01
, "tex.x1.wrapped");
1072 lp_build_sample_wrap_linear(bld
, is_gather
, coords
[1], height_vec
,
1073 flt_height_vec
, offsets
[1],
1074 bld
->static_texture_state
->pot_height
,
1075 bld
->static_sampler_state
->wrap_t
,
1076 &y00
, &y10
, &t_fpart
);
1077 lp_build_name(y00
, "tex.y0.wrapped");
1078 lp_build_name(y10
, "tex.y1.wrapped");
1083 lp_build_sample_wrap_linear(bld
, is_gather
, coords
[2], depth_vec
,
1084 flt_depth_vec
, offsets
[2],
1085 bld
->static_texture_state
->pot_depth
,
1086 bld
->static_sampler_state
->wrap_r
,
1087 &z00
, &z1
, &r_fpart
);
1088 z01
= z10
= z11
= z00
;
1089 lp_build_name(z00
, "tex.z0.wrapped");
1090 lp_build_name(z1
, "tex.z1.wrapped");
1093 if (has_layer_coord(bld
->static_texture_state
->target
)) {
1094 if (bld
->static_texture_state
->target
== PIPE_TEXTURE_CUBE_ARRAY
) {
1095 /* add cube layer to face */
1096 z00
= z01
= z10
= z11
= z1
=
1097 lp_build_add(&bld
->int_coord_bld
, coords
[2], coords
[3]);
1100 z00
= z01
= z10
= z11
= z1
= coords
[2]; /* cube face or layer */
1102 lp_build_name(z00
, "tex.z0.layer");
1103 lp_build_name(z1
, "tex.z1.layer");
1107 struct lp_build_if_state edge_if
;
1109 LLVMValueRef new_faces
[4], new_xcoords
[4][2], new_ycoords
[4][2];
1110 LLVMValueRef coord0
, coord1
, have_edge
, have_corner
;
1111 LLVMValueRef fall_off_ym_notxm
, fall_off_ym_notxp
, fall_off_x
, fall_off_y
;
1112 LLVMValueRef fall_off_yp_notxm
, fall_off_yp_notxp
;
1113 LLVMValueRef x0
, x1
, y0
, y1
, y0_clamped
, y1_clamped
;
1114 LLVMValueRef face
= coords
[2];
1115 LLVMValueRef half
= lp_build_const_vec(bld
->gallivm
, coord_bld
->type
, 0.5f
);
1116 LLVMValueRef length_minus_one
= lp_build_sub(ivec_bld
, width_vec
, ivec_bld
->one
);
1117 /* XXX drop height calcs. Could (should) do this without seamless filtering too */
1118 height_vec
= width_vec
;
1119 flt_height_vec
= flt_width_vec
;
1121 /* XXX the overflow logic is actually sort of duplicated with trilinear,
1122 * since an overflow in one mip should also have a corresponding overflow
1125 /* should always have normalized coords, and offsets are undefined */
1126 assert(bld
->static_sampler_state
->normalized_coords
);
1128 * The coords should all be between [0,1] however we can have NaNs,
1129 * which will wreak havoc. In particular the y1_clamped value below
1130 * can be -INT_MAX (on x86) and be propagated right through (probably
1131 * other values might be bogus in the end too).
1132 * So kill off the NaNs here.
1134 coord0
= lp_build_max_ext(coord_bld
, coords
[0], coord_bld
->zero
,
1135 GALLIVM_NAN_RETURN_OTHER_SECOND_NONNAN
);
1136 coord0
= lp_build_mul(coord_bld
, coord0
, flt_width_vec
);
1137 /* instead of clamp, build mask if overflowed */
1138 coord0
= lp_build_sub(coord_bld
, coord0
, half
);
1139 /* convert to int, compute lerp weight */
1140 /* not ideal with AVX (and no AVX2) */
1141 lp_build_ifloor_fract(coord_bld
, coord0
, &x0
, &s_fpart
);
1142 x1
= lp_build_add(ivec_bld
, x0
, ivec_bld
->one
);
1143 coord1
= lp_build_max_ext(coord_bld
, coords
[1], coord_bld
->zero
,
1144 GALLIVM_NAN_RETURN_OTHER_SECOND_NONNAN
);
1145 coord1
= lp_build_mul(coord_bld
, coord1
, flt_height_vec
);
1146 coord1
= lp_build_sub(coord_bld
, coord1
, half
);
1147 lp_build_ifloor_fract(coord_bld
, coord1
, &y0
, &t_fpart
);
1148 y1
= lp_build_add(ivec_bld
, y0
, ivec_bld
->one
);
1150 fall_off
[0] = lp_build_cmp(ivec_bld
, PIPE_FUNC_LESS
, x0
, ivec_bld
->zero
);
1151 fall_off
[1] = lp_build_cmp(ivec_bld
, PIPE_FUNC_GREATER
, x1
, length_minus_one
);
1152 fall_off
[2] = lp_build_cmp(ivec_bld
, PIPE_FUNC_LESS
, y0
, ivec_bld
->zero
);
1153 fall_off
[3] = lp_build_cmp(ivec_bld
, PIPE_FUNC_GREATER
, y1
, length_minus_one
);
1155 fall_off_x
= lp_build_or(ivec_bld
, fall_off
[0], fall_off
[1]);
1156 fall_off_y
= lp_build_or(ivec_bld
, fall_off
[2], fall_off
[3]);
1157 have_edge
= lp_build_or(ivec_bld
, fall_off_x
, fall_off_y
);
1158 have_edge
= lp_build_any_true_range(ivec_bld
, ivec_bld
->type
.length
, have_edge
);
1160 /* needed for accurate corner filtering branch later, rely on 0 init */
1161 int1t
= LLVMInt1TypeInContext(bld
->gallivm
->context
);
1162 have_corners
= lp_build_alloca(bld
->gallivm
, int1t
, "have_corner");
1164 for (texel_index
= 0; texel_index
< 4; texel_index
++) {
1165 xs
[texel_index
] = lp_build_alloca(bld
->gallivm
, ivec_bld
->vec_type
, "xs");
1166 ys
[texel_index
] = lp_build_alloca(bld
->gallivm
, ivec_bld
->vec_type
, "ys");
1167 zs
[texel_index
] = lp_build_alloca(bld
->gallivm
, ivec_bld
->vec_type
, "zs");
1170 lp_build_if(&edge_if
, bld
->gallivm
, have_edge
);
1172 have_corner
= lp_build_and(ivec_bld
, fall_off_x
, fall_off_y
);
1173 have_corner
= lp_build_any_true_range(ivec_bld
, ivec_bld
->type
.length
, have_corner
);
1174 LLVMBuildStore(builder
, have_corner
, have_corners
);
1177 * Need to feed clamped values here for cheap corner handling,
1178 * but only for y coord (as when falling off both edges we only
1179 * fall off the x one) - this should be sufficient.
1181 y0_clamped
= lp_build_max(ivec_bld
, y0
, ivec_bld
->zero
);
1182 y1_clamped
= lp_build_min(ivec_bld
, y1
, length_minus_one
);
1185 * Get all possible new coords.
1187 lp_build_cube_new_coords(ivec_bld
, face
,
1188 x0
, x1
, y0_clamped
, y1_clamped
,
1190 new_faces
, new_xcoords
, new_ycoords
);
1192 /* handle fall off x-, x+ direction */
1193 /* determine new coords, face (not both fall_off vars can be true at same time) */
1194 x00
= lp_build_select(ivec_bld
, fall_off
[0], new_xcoords
[0][0], x0
);
1195 y00
= lp_build_select(ivec_bld
, fall_off
[0], new_ycoords
[0][0], y0_clamped
);
1196 x10
= lp_build_select(ivec_bld
, fall_off
[0], new_xcoords
[0][1], x0
);
1197 y10
= lp_build_select(ivec_bld
, fall_off
[0], new_ycoords
[0][1], y1_clamped
);
1198 x01
= lp_build_select(ivec_bld
, fall_off
[1], new_xcoords
[1][0], x1
);
1199 y01
= lp_build_select(ivec_bld
, fall_off
[1], new_ycoords
[1][0], y0_clamped
);
1200 x11
= lp_build_select(ivec_bld
, fall_off
[1], new_xcoords
[1][1], x1
);
1201 y11
= lp_build_select(ivec_bld
, fall_off
[1], new_ycoords
[1][1], y1_clamped
);
1203 z00
= z10
= lp_build_select(ivec_bld
, fall_off
[0], new_faces
[0], face
);
1204 z01
= z11
= lp_build_select(ivec_bld
, fall_off
[1], new_faces
[1], face
);
1206 /* handle fall off y-, y+ direction */
1208 * Cheap corner logic: just hack up things so a texel doesn't fall
1209 * off both sides (which means filter weights will be wrong but we'll only
1210 * use valid texels in the filter).
1211 * This means however (y) coords must additionally be clamped (see above).
1212 * This corner handling should be fully OpenGL (but not d3d10) compliant.
1214 fall_off_ym_notxm
= lp_build_andnot(ivec_bld
, fall_off
[2], fall_off
[0]);
1215 fall_off_ym_notxp
= lp_build_andnot(ivec_bld
, fall_off
[2], fall_off
[1]);
1216 fall_off_yp_notxm
= lp_build_andnot(ivec_bld
, fall_off
[3], fall_off
[0]);
1217 fall_off_yp_notxp
= lp_build_andnot(ivec_bld
, fall_off
[3], fall_off
[1]);
1219 x00
= lp_build_select(ivec_bld
, fall_off_ym_notxm
, new_xcoords
[2][0], x00
);
1220 y00
= lp_build_select(ivec_bld
, fall_off_ym_notxm
, new_ycoords
[2][0], y00
);
1221 x01
= lp_build_select(ivec_bld
, fall_off_ym_notxp
, new_xcoords
[2][1], x01
);
1222 y01
= lp_build_select(ivec_bld
, fall_off_ym_notxp
, new_ycoords
[2][1], y01
);
1223 x10
= lp_build_select(ivec_bld
, fall_off_yp_notxm
, new_xcoords
[3][0], x10
);
1224 y10
= lp_build_select(ivec_bld
, fall_off_yp_notxm
, new_ycoords
[3][0], y10
);
1225 x11
= lp_build_select(ivec_bld
, fall_off_yp_notxp
, new_xcoords
[3][1], x11
);
1226 y11
= lp_build_select(ivec_bld
, fall_off_yp_notxp
, new_ycoords
[3][1], y11
);
1228 z00
= lp_build_select(ivec_bld
, fall_off_ym_notxm
, new_faces
[2], z00
);
1229 z01
= lp_build_select(ivec_bld
, fall_off_ym_notxp
, new_faces
[2], z01
);
1230 z10
= lp_build_select(ivec_bld
, fall_off_yp_notxm
, new_faces
[3], z10
);
1231 z11
= lp_build_select(ivec_bld
, fall_off_yp_notxp
, new_faces
[3], z11
);
1233 if (bld
->static_texture_state
->target
== PIPE_TEXTURE_CUBE_ARRAY
) {
1234 /* now can add cube layer to face (per sample) */
1235 z00
= lp_build_add(ivec_bld
, z00
, coords
[3]);
1236 z01
= lp_build_add(ivec_bld
, z01
, coords
[3]);
1237 z10
= lp_build_add(ivec_bld
, z10
, coords
[3]);
1238 z11
= lp_build_add(ivec_bld
, z11
, coords
[3]);
1241 LLVMBuildStore(builder
, x00
, xs
[0]);
1242 LLVMBuildStore(builder
, x01
, xs
[1]);
1243 LLVMBuildStore(builder
, x10
, xs
[2]);
1244 LLVMBuildStore(builder
, x11
, xs
[3]);
1245 LLVMBuildStore(builder
, y00
, ys
[0]);
1246 LLVMBuildStore(builder
, y01
, ys
[1]);
1247 LLVMBuildStore(builder
, y10
, ys
[2]);
1248 LLVMBuildStore(builder
, y11
, ys
[3]);
1249 LLVMBuildStore(builder
, z00
, zs
[0]);
1250 LLVMBuildStore(builder
, z01
, zs
[1]);
1251 LLVMBuildStore(builder
, z10
, zs
[2]);
1252 LLVMBuildStore(builder
, z11
, zs
[3]);
1254 lp_build_else(&edge_if
);
1256 LLVMBuildStore(builder
, x0
, xs
[0]);
1257 LLVMBuildStore(builder
, x1
, xs
[1]);
1258 LLVMBuildStore(builder
, x0
, xs
[2]);
1259 LLVMBuildStore(builder
, x1
, xs
[3]);
1260 LLVMBuildStore(builder
, y0
, ys
[0]);
1261 LLVMBuildStore(builder
, y0
, ys
[1]);
1262 LLVMBuildStore(builder
, y1
, ys
[2]);
1263 LLVMBuildStore(builder
, y1
, ys
[3]);
1264 if (bld
->static_texture_state
->target
== PIPE_TEXTURE_CUBE_ARRAY
) {
1265 LLVMValueRef cube_layer
= lp_build_add(ivec_bld
, face
, coords
[3]);
1266 LLVMBuildStore(builder
, cube_layer
, zs
[0]);
1267 LLVMBuildStore(builder
, cube_layer
, zs
[1]);
1268 LLVMBuildStore(builder
, cube_layer
, zs
[2]);
1269 LLVMBuildStore(builder
, cube_layer
, zs
[3]);
1272 LLVMBuildStore(builder
, face
, zs
[0]);
1273 LLVMBuildStore(builder
, face
, zs
[1]);
1274 LLVMBuildStore(builder
, face
, zs
[2]);
1275 LLVMBuildStore(builder
, face
, zs
[3]);
1278 lp_build_endif(&edge_if
);
1280 x00
= LLVMBuildLoad(builder
, xs
[0], "");
1281 x01
= LLVMBuildLoad(builder
, xs
[1], "");
1282 x10
= LLVMBuildLoad(builder
, xs
[2], "");
1283 x11
= LLVMBuildLoad(builder
, xs
[3], "");
1284 y00
= LLVMBuildLoad(builder
, ys
[0], "");
1285 y01
= LLVMBuildLoad(builder
, ys
[1], "");
1286 y10
= LLVMBuildLoad(builder
, ys
[2], "");
1287 y11
= LLVMBuildLoad(builder
, ys
[3], "");
1288 z00
= LLVMBuildLoad(builder
, zs
[0], "");
1289 z01
= LLVMBuildLoad(builder
, zs
[1], "");
1290 z10
= LLVMBuildLoad(builder
, zs
[2], "");
1291 z11
= LLVMBuildLoad(builder
, zs
[3], "");
1296 * Whack filter weights into place. Whatever texel had more weight is
1297 * the one which should have been selected by nearest filtering hence
1298 * just use 100% weight for it.
1300 struct lp_build_context
*c_bld
= &bld
->coord_bld
;
1301 LLVMValueRef w1_mask
, w1_weight
;
1302 LLVMValueRef half
= lp_build_const_vec(bld
->gallivm
, c_bld
->type
, 0.5f
);
1304 w1_mask
= lp_build_cmp(c_bld
, PIPE_FUNC_GREATER
, s_fpart
, half
);
1305 /* this select is really just a "and" */
1306 w1_weight
= lp_build_select(c_bld
, w1_mask
, c_bld
->one
, c_bld
->zero
);
1307 s_fpart
= lp_build_select(c_bld
, linear_mask
, s_fpart
, w1_weight
);
1309 w1_mask
= lp_build_cmp(c_bld
, PIPE_FUNC_GREATER
, t_fpart
, half
);
1310 w1_weight
= lp_build_select(c_bld
, w1_mask
, c_bld
->one
, c_bld
->zero
);
1311 t_fpart
= lp_build_select(c_bld
, linear_mask
, t_fpart
, w1_weight
);
1313 w1_mask
= lp_build_cmp(c_bld
, PIPE_FUNC_GREATER
, r_fpart
, half
);
1314 w1_weight
= lp_build_select(c_bld
, w1_mask
, c_bld
->one
, c_bld
->zero
);
1315 r_fpart
= lp_build_select(c_bld
, linear_mask
, r_fpart
, w1_weight
);
1321 * Get texture colors.
1323 /* get x0/x1 texels */
1324 lp_build_sample_texel_soa(bld
,
1325 width_vec
, height_vec
, depth_vec
,
1327 row_stride_vec
, img_stride_vec
,
1328 data_ptr
, mipoffsets
, neighbors
[0][0]);
1329 lp_build_sample_texel_soa(bld
,
1330 width_vec
, height_vec
, depth_vec
,
1332 row_stride_vec
, img_stride_vec
,
1333 data_ptr
, mipoffsets
, neighbors
[0][1]);
1337 if (bld
->static_sampler_state
->compare_mode
== PIPE_TEX_COMPARE_NONE
) {
1338 /* Interpolate two samples from 1D image to produce one color */
1339 for (chan
= 0; chan
< 4; chan
++) {
1340 colors_out
[chan
] = lp_build_lerp(texel_bld
, s_fpart
,
1341 neighbors
[0][0][chan
],
1342 neighbors
[0][1][chan
],
1347 LLVMValueRef cmpval0
, cmpval1
;
1348 cmpval0
= lp_build_sample_comparefunc(bld
, coords
[4], neighbors
[0][0][0]);
1349 cmpval1
= lp_build_sample_comparefunc(bld
, coords
[4], neighbors
[0][1][0]);
1350 /* simplified lerp, AND mask with weight and add */
1351 colors_out
[0] = lp_build_masklerp(texel_bld
, s_fpart
,
1353 colors_out
[1] = colors_out
[2] = colors_out
[3] = colors_out
[0];
1358 struct lp_build_if_state corner_if
;
1359 LLVMValueRef colors0
[4], colorss
[4];
1361 /* get x0/x1 texels at y1 */
1362 lp_build_sample_texel_soa(bld
,
1363 width_vec
, height_vec
, depth_vec
,
1365 row_stride_vec
, img_stride_vec
,
1366 data_ptr
, mipoffsets
, neighbors
[1][0]);
1367 lp_build_sample_texel_soa(bld
,
1368 width_vec
, height_vec
, depth_vec
,
1370 row_stride_vec
, img_stride_vec
,
1371 data_ptr
, mipoffsets
, neighbors
[1][1]);
1374 * To avoid having to duplicate linear_mask / fetch code use
1375 * another branch (with corner condition though edge would work
1378 if (accurate_cube_corners
) {
1379 LLVMValueRef c00
, c01
, c10
, c11
, c00f
, c01f
, c10f
, c11f
;
1380 LLVMValueRef have_corner
, one_third
;
1382 colorss
[0] = lp_build_alloca(bld
->gallivm
, coord_bld
->vec_type
, "cs0");
1383 colorss
[1] = lp_build_alloca(bld
->gallivm
, coord_bld
->vec_type
, "cs1");
1384 colorss
[2] = lp_build_alloca(bld
->gallivm
, coord_bld
->vec_type
, "cs2");
1385 colorss
[3] = lp_build_alloca(bld
->gallivm
, coord_bld
->vec_type
, "cs3");
1387 have_corner
= LLVMBuildLoad(builder
, have_corners
, "");
1389 lp_build_if(&corner_if
, bld
->gallivm
, have_corner
);
1391 one_third
= lp_build_const_vec(bld
->gallivm
, coord_bld
->type
,
1395 c00
= lp_build_and(ivec_bld
, fall_off
[0], fall_off
[2]);
1396 c00f
= LLVMBuildBitCast(builder
, c00
, coord_bld
->vec_type
, "");
1397 c01
= lp_build_and(ivec_bld
, fall_off
[1], fall_off
[2]);
1398 c01f
= LLVMBuildBitCast(builder
, c01
, coord_bld
->vec_type
, "");
1399 c10
= lp_build_and(ivec_bld
, fall_off
[0], fall_off
[3]);
1400 c10f
= LLVMBuildBitCast(builder
, c10
, coord_bld
->vec_type
, "");
1401 c11
= lp_build_and(ivec_bld
, fall_off
[1], fall_off
[3]);
1402 c11f
= LLVMBuildBitCast(builder
, c11
, coord_bld
->vec_type
, "");
1406 * we can't use standard 2d lerp as we need per-element weight
1407 * in case of corners, so just calculate bilinear result as
1408 * w00*s00 + w01*s01 + w10*s10 + w11*s11.
1409 * (This is actually less work than using 2d lerp, 7 vs. 9
1410 * instructions, however calculating the weights needs another 6,
1411 * so actually probably not slower than 2d lerp only for 4 channels
1412 * as weights only need to be calculated once - of course fixing
1413 * the weights has additional cost.)
1415 LLVMValueRef w00
, w01
, w10
, w11
, wx0
, wy0
, c_weight
, tmp
;
1416 wx0
= lp_build_sub(coord_bld
, coord_bld
->one
, s_fpart
);
1417 wy0
= lp_build_sub(coord_bld
, coord_bld
->one
, t_fpart
);
1418 w00
= lp_build_mul(coord_bld
, wx0
, wy0
);
1419 w01
= lp_build_mul(coord_bld
, s_fpart
, wy0
);
1420 w10
= lp_build_mul(coord_bld
, wx0
, t_fpart
);
1421 w11
= lp_build_mul(coord_bld
, s_fpart
, t_fpart
);
1423 /* find corner weight */
1424 c_weight
= lp_build_select(coord_bld
, c00
, w00
, coord_bld
->zero
);
1425 c_weight
= lp_build_select(coord_bld
, c01
, w01
, c_weight
);
1426 c_weight
= lp_build_select(coord_bld
, c10
, w10
, c_weight
);
1427 c_weight
= lp_build_select(coord_bld
, c11
, w11
, c_weight
);
1430 * add 1/3 of the corner weight to the weight of the 3 other
1431 * samples and null out corner weight.
1433 c_weight
= lp_build_mul(coord_bld
, c_weight
, one_third
);
1434 w00
= lp_build_add(coord_bld
, w00
, c_weight
);
1435 w00
= lp_build_andnot(coord_bld
, w00
, c00f
);
1436 w01
= lp_build_add(coord_bld
, w01
, c_weight
);
1437 w01
= lp_build_andnot(coord_bld
, w01
, c01f
);
1438 w10
= lp_build_add(coord_bld
, w10
, c_weight
);
1439 w10
= lp_build_andnot(coord_bld
, w10
, c10f
);
1440 w11
= lp_build_add(coord_bld
, w11
, c_weight
);
1441 w11
= lp_build_andnot(coord_bld
, w11
, c11f
);
1443 if (bld
->static_sampler_state
->compare_mode
==
1444 PIPE_TEX_COMPARE_NONE
) {
1445 for (chan
= 0; chan
< 4; chan
++) {
1446 colors0
[chan
] = lp_build_mul(coord_bld
, w00
,
1447 neighbors
[0][0][chan
]);
1448 tmp
= lp_build_mul(coord_bld
, w01
, neighbors
[0][1][chan
]);
1449 colors0
[chan
] = lp_build_add(coord_bld
, tmp
, colors0
[chan
]);
1450 tmp
= lp_build_mul(coord_bld
, w10
, neighbors
[1][0][chan
]);
1451 colors0
[chan
] = lp_build_add(coord_bld
, tmp
, colors0
[chan
]);
1452 tmp
= lp_build_mul(coord_bld
, w11
, neighbors
[1][1][chan
]);
1453 colors0
[chan
] = lp_build_add(coord_bld
, tmp
, colors0
[chan
]);
1457 LLVMValueRef cmpval00
, cmpval01
, cmpval10
, cmpval11
;
1458 cmpval00
= lp_build_sample_comparefunc(bld
, coords
[4],
1459 neighbors
[0][0][0]);
1460 cmpval01
= lp_build_sample_comparefunc(bld
, coords
[4],
1461 neighbors
[0][1][0]);
1462 cmpval10
= lp_build_sample_comparefunc(bld
, coords
[4],
1463 neighbors
[1][0][0]);
1464 cmpval11
= lp_build_sample_comparefunc(bld
, coords
[4],
1465 neighbors
[1][1][0]);
1467 * inputs to interpolation are just masks so just add
1468 * masked weights together
1470 cmpval00
= LLVMBuildBitCast(builder
, cmpval00
,
1471 coord_bld
->vec_type
, "");
1472 cmpval01
= LLVMBuildBitCast(builder
, cmpval01
,
1473 coord_bld
->vec_type
, "");
1474 cmpval10
= LLVMBuildBitCast(builder
, cmpval10
,
1475 coord_bld
->vec_type
, "");
1476 cmpval11
= LLVMBuildBitCast(builder
, cmpval11
,
1477 coord_bld
->vec_type
, "");
1478 colors0
[0] = lp_build_and(coord_bld
, w00
, cmpval00
);
1479 tmp
= lp_build_and(coord_bld
, w01
, cmpval01
);
1480 colors0
[0] = lp_build_add(coord_bld
, tmp
, colors0
[0]);
1481 tmp
= lp_build_and(coord_bld
, w10
, cmpval10
);
1482 colors0
[0] = lp_build_add(coord_bld
, tmp
, colors0
[0]);
1483 tmp
= lp_build_and(coord_bld
, w11
, cmpval11
);
1484 colors0
[0] = lp_build_add(coord_bld
, tmp
, colors0
[0]);
1485 colors0
[1] = colors0
[2] = colors0
[3] = colors0
[0];
1490 * We don't have any weights to adjust, so instead calculate
1491 * the fourth texel as simply the average of the other 3.
1492 * (This would work for non-gather too, however we'd have
1493 * a boatload more of the select stuff due to there being
1494 * 4 times as many colors as weights.)
1496 LLVMValueRef col00
, col01
, col10
, col11
;
1497 LLVMValueRef colc
, colc0
, colc1
;
1498 col10
= lp_build_swizzle_soa_channel(texel_bld
,
1499 neighbors
[1][0], chan_swiz
);
1500 col11
= lp_build_swizzle_soa_channel(texel_bld
,
1501 neighbors
[1][1], chan_swiz
);
1502 col01
= lp_build_swizzle_soa_channel(texel_bld
,
1503 neighbors
[0][1], chan_swiz
);
1504 col00
= lp_build_swizzle_soa_channel(texel_bld
,
1505 neighbors
[0][0], chan_swiz
);
1508 * The spec says for comparison filtering, the comparison
1509 * must happen before synthesizing the new value.
1510 * This means all gathered values are always 0 or 1,
1511 * except for the non-existing texel, which can be 0,1/3,2/3,1...
1512 * Seems like we'd be allowed to just return 0 or 1 too, so we
1513 * could simplify and pass down the compare mask values to the
1514 * end (using int arithmetic/compare on the mask values to
1515 * construct the fourth texel) and only there convert to floats
1516 * but it's probably not worth it (it might be easier for the cpu
1517 * but not for the code)...
1519 if (bld
->static_sampler_state
->compare_mode
!=
1520 PIPE_TEX_COMPARE_NONE
) {
1521 LLVMValueRef cmpval00
, cmpval01
, cmpval10
, cmpval11
;
1522 cmpval00
= lp_build_sample_comparefunc(bld
, coords
[4], col00
);
1523 cmpval01
= lp_build_sample_comparefunc(bld
, coords
[4], col01
);
1524 cmpval10
= lp_build_sample_comparefunc(bld
, coords
[4], col10
);
1525 cmpval11
= lp_build_sample_comparefunc(bld
, coords
[4], col11
);
1526 col00
= lp_build_select(texel_bld
, cmpval00
,
1527 texel_bld
->one
, texel_bld
->zero
);
1528 col01
= lp_build_select(texel_bld
, cmpval01
,
1529 texel_bld
->one
, texel_bld
->zero
);
1530 col10
= lp_build_select(texel_bld
, cmpval10
,
1531 texel_bld
->one
, texel_bld
->zero
);
1532 col11
= lp_build_select(texel_bld
, cmpval11
,
1533 texel_bld
->one
, texel_bld
->zero
);
1537 * Null out corner color.
1539 col00
= lp_build_andnot(coord_bld
, col00
, c00f
);
1540 col01
= lp_build_andnot(coord_bld
, col01
, c01f
);
1541 col10
= lp_build_andnot(coord_bld
, col10
, c10f
);
1542 col11
= lp_build_andnot(coord_bld
, col11
, c11f
);
1545 * New corner texel color is all colors added / 3.
1547 colc0
= lp_build_add(coord_bld
, col00
, col01
);
1548 colc1
= lp_build_add(coord_bld
, col10
, col11
);
1549 colc
= lp_build_add(coord_bld
, colc0
, colc1
);
1550 colc
= lp_build_mul(coord_bld
, one_third
, colc
);
1553 * Replace the corner texel color with the new value.
1555 col00
= lp_build_select(coord_bld
, c00
, colc
, col00
);
1556 col01
= lp_build_select(coord_bld
, c01
, colc
, col01
);
1557 col10
= lp_build_select(coord_bld
, c10
, colc
, col10
);
1558 col11
= lp_build_select(coord_bld
, c11
, colc
, col11
);
1566 LLVMBuildStore(builder
, colors0
[0], colorss
[0]);
1567 LLVMBuildStore(builder
, colors0
[1], colorss
[1]);
1568 LLVMBuildStore(builder
, colors0
[2], colorss
[2]);
1569 LLVMBuildStore(builder
, colors0
[3], colorss
[3]);
1571 lp_build_else(&corner_if
);
1574 if (bld
->static_sampler_state
->compare_mode
== PIPE_TEX_COMPARE_NONE
) {
1577 * Just assign the red channel (no component selection yet).
1578 * This is a bit hackish, we usually do the swizzle at the
1579 * end of sampling (much less values to swizzle), but this
1580 * obviously cannot work when using gather.
1582 colors0
[0] = lp_build_swizzle_soa_channel(texel_bld
,
1585 colors0
[1] = lp_build_swizzle_soa_channel(texel_bld
,
1588 colors0
[2] = lp_build_swizzle_soa_channel(texel_bld
,
1591 colors0
[3] = lp_build_swizzle_soa_channel(texel_bld
,
1596 /* Bilinear interpolate the four samples from the 2D image / 3D slice */
1597 for (chan
= 0; chan
< 4; chan
++) {
1598 colors0
[chan
] = lp_build_lerp_2d(texel_bld
,
1600 neighbors
[0][0][chan
],
1601 neighbors
[0][1][chan
],
1602 neighbors
[1][0][chan
],
1603 neighbors
[1][1][chan
],
1609 LLVMValueRef cmpval00
, cmpval01
, cmpval10
, cmpval11
;
1610 cmpval00
= lp_build_sample_comparefunc(bld
, coords
[4], neighbors
[0][0][0]);
1611 cmpval01
= lp_build_sample_comparefunc(bld
, coords
[4], neighbors
[0][1][0]);
1612 cmpval10
= lp_build_sample_comparefunc(bld
, coords
[4], neighbors
[1][0][0]);
1613 cmpval11
= lp_build_sample_comparefunc(bld
, coords
[4], neighbors
[1][1][0]);
1616 /* more hacks for swizzling, should be X, ONE or ZERO... */
1617 colors0
[0] = lp_build_select(texel_bld
, cmpval10
,
1618 texel_bld
->one
, texel_bld
->zero
);
1619 colors0
[1] = lp_build_select(texel_bld
, cmpval11
,
1620 texel_bld
->one
, texel_bld
->zero
);
1621 colors0
[2] = lp_build_select(texel_bld
, cmpval01
,
1622 texel_bld
->one
, texel_bld
->zero
);
1623 colors0
[3] = lp_build_select(texel_bld
, cmpval00
,
1624 texel_bld
->one
, texel_bld
->zero
);
1627 colors0
[0] = lp_build_masklerp2d(texel_bld
, s_fpart
, t_fpart
,
1628 cmpval00
, cmpval01
, cmpval10
, cmpval11
);
1629 colors0
[1] = colors0
[2] = colors0
[3] = colors0
[0];
1633 if (accurate_cube_corners
) {
1634 LLVMBuildStore(builder
, colors0
[0], colorss
[0]);
1635 LLVMBuildStore(builder
, colors0
[1], colorss
[1]);
1636 LLVMBuildStore(builder
, colors0
[2], colorss
[2]);
1637 LLVMBuildStore(builder
, colors0
[3], colorss
[3]);
1639 lp_build_endif(&corner_if
);
1641 colors0
[0] = LLVMBuildLoad(builder
, colorss
[0], "");
1642 colors0
[1] = LLVMBuildLoad(builder
, colorss
[1], "");
1643 colors0
[2] = LLVMBuildLoad(builder
, colorss
[2], "");
1644 colors0
[3] = LLVMBuildLoad(builder
, colorss
[3], "");
1648 LLVMValueRef neighbors1
[2][2][4];
1649 LLVMValueRef colors1
[4];
1653 /* get x0/x1/y0/y1 texels at z1 */
1654 lp_build_sample_texel_soa(bld
,
1655 width_vec
, height_vec
, depth_vec
,
1657 row_stride_vec
, img_stride_vec
,
1658 data_ptr
, mipoffsets
, neighbors1
[0][0]);
1659 lp_build_sample_texel_soa(bld
,
1660 width_vec
, height_vec
, depth_vec
,
1662 row_stride_vec
, img_stride_vec
,
1663 data_ptr
, mipoffsets
, neighbors1
[0][1]);
1664 lp_build_sample_texel_soa(bld
,
1665 width_vec
, height_vec
, depth_vec
,
1667 row_stride_vec
, img_stride_vec
,
1668 data_ptr
, mipoffsets
, neighbors1
[1][0]);
1669 lp_build_sample_texel_soa(bld
,
1670 width_vec
, height_vec
, depth_vec
,
1672 row_stride_vec
, img_stride_vec
,
1673 data_ptr
, mipoffsets
, neighbors1
[1][1]);
1675 if (bld
->static_sampler_state
->compare_mode
== PIPE_TEX_COMPARE_NONE
) {
1676 /* Bilinear interpolate the four samples from the second Z slice */
1677 for (chan
= 0; chan
< 4; chan
++) {
1678 colors1
[chan
] = lp_build_lerp_2d(texel_bld
,
1680 neighbors1
[0][0][chan
],
1681 neighbors1
[0][1][chan
],
1682 neighbors1
[1][0][chan
],
1683 neighbors1
[1][1][chan
],
1686 /* Linearly interpolate the two samples from the two 3D slices */
1687 for (chan
= 0; chan
< 4; chan
++) {
1688 colors_out
[chan
] = lp_build_lerp(texel_bld
,
1690 colors0
[chan
], colors1
[chan
],
1695 LLVMValueRef cmpval00
, cmpval01
, cmpval10
, cmpval11
;
1696 cmpval00
= lp_build_sample_comparefunc(bld
, coords
[4], neighbors
[0][0][0]);
1697 cmpval01
= lp_build_sample_comparefunc(bld
, coords
[4], neighbors
[0][1][0]);
1698 cmpval10
= lp_build_sample_comparefunc(bld
, coords
[4], neighbors
[1][0][0]);
1699 cmpval11
= lp_build_sample_comparefunc(bld
, coords
[4], neighbors
[1][1][0]);
1700 colors1
[0] = lp_build_masklerp2d(texel_bld
, s_fpart
, t_fpart
,
1701 cmpval00
, cmpval01
, cmpval10
, cmpval11
);
1702 /* Linearly interpolate the two samples from the two 3D slices */
1703 colors_out
[0] = lp_build_lerp(texel_bld
,
1705 colors0
[0], colors1
[0],
1707 colors_out
[1] = colors_out
[2] = colors_out
[3] = colors_out
[0];
1712 for (chan
= 0; chan
< 4; chan
++) {
1713 colors_out
[chan
] = colors0
[chan
];
1719 * For gather, we can't do our usual channel swizzling done later,
1720 * so do it here. It only really matters for 0/1 swizzles in case
1721 * of comparison filtering, since in this case the results would be
1722 * wrong, without comparison it should all work out alright but it
1723 * can't hurt to do that here, since it will instantly drop all
1724 * calculations above, though it's a rather stupid idea to do
1725 * gather on a channel which will always return 0 or 1 in any case...
1727 if (chan_swiz
== PIPE_SWIZZLE_1
) {
1728 for (chan
= 0; chan
< 4; chan
++) {
1729 colors_out
[chan
] = texel_bld
->one
;
1731 } else if (chan_swiz
== PIPE_SWIZZLE_0
) {
1732 for (chan
= 0; chan
< 4; chan
++) {
1733 colors_out
[chan
] = texel_bld
->zero
;
1741 * Sample the texture/mipmap using given image filter and mip filter.
1742 * ilevel0 and ilevel1 indicate the two mipmap levels to sample
1743 * from (vectors or scalars).
1744 * If we're using nearest miplevel sampling the '1' values will be null/unused.
1747 lp_build_sample_mipmap(struct lp_build_sample_context
*bld
,
1748 unsigned img_filter
,
1749 unsigned mip_filter
,
1751 const LLVMValueRef
*coords
,
1752 const LLVMValueRef
*offsets
,
1753 LLVMValueRef ilevel0
,
1754 LLVMValueRef ilevel1
,
1755 LLVMValueRef lod_fpart
,
1756 LLVMValueRef
*colors_out
)
1758 LLVMBuilderRef builder
= bld
->gallivm
->builder
;
1759 LLVMValueRef size0
= NULL
;
1760 LLVMValueRef size1
= NULL
;
1761 LLVMValueRef row_stride0_vec
= NULL
;
1762 LLVMValueRef row_stride1_vec
= NULL
;
1763 LLVMValueRef img_stride0_vec
= NULL
;
1764 LLVMValueRef img_stride1_vec
= NULL
;
1765 LLVMValueRef data_ptr0
= NULL
;
1766 LLVMValueRef data_ptr1
= NULL
;
1767 LLVMValueRef mipoff0
= NULL
;
1768 LLVMValueRef mipoff1
= NULL
;
1769 LLVMValueRef colors0
[4], colors1
[4];
1772 /* sample the first mipmap level */
1773 lp_build_mipmap_level_sizes(bld
, ilevel0
,
1775 &row_stride0_vec
, &img_stride0_vec
);
1776 if (bld
->num_mips
== 1) {
1777 data_ptr0
= lp_build_get_mipmap_level(bld
, ilevel0
);
1780 /* This path should work for num_lods 1 too but slightly less efficient */
1781 data_ptr0
= bld
->base_ptr
;
1782 mipoff0
= lp_build_get_mip_offsets(bld
, ilevel0
);
1784 if (img_filter
== PIPE_TEX_FILTER_NEAREST
) {
1785 lp_build_sample_image_nearest(bld
, size0
,
1786 row_stride0_vec
, img_stride0_vec
,
1787 data_ptr0
, mipoff0
, coords
, offsets
,
1791 assert(img_filter
== PIPE_TEX_FILTER_LINEAR
);
1792 lp_build_sample_image_linear(bld
, is_gather
, size0
, NULL
,
1793 row_stride0_vec
, img_stride0_vec
,
1794 data_ptr0
, mipoff0
, coords
, offsets
,
1798 /* Store the first level's colors in the output variables */
1799 for (chan
= 0; chan
< 4; chan
++) {
1800 LLVMBuildStore(builder
, colors0
[chan
], colors_out
[chan
]);
1803 if (mip_filter
== PIPE_TEX_MIPFILTER_LINEAR
) {
1804 struct lp_build_if_state if_ctx
;
1805 LLVMValueRef need_lerp
;
1807 /* need_lerp = lod_fpart > 0 */
1808 if (bld
->num_lods
== 1) {
1809 need_lerp
= LLVMBuildFCmp(builder
, LLVMRealUGT
,
1810 lod_fpart
, bld
->lodf_bld
.zero
,
1815 * We'll do mip filtering if any of the quads (or individual
1816 * pixel in case of per-pixel lod) need it.
1817 * It might be better to split the vectors here and only fetch/filter
1818 * quads which need it (if there's one lod per quad).
1820 need_lerp
= lp_build_compare(bld
->gallivm
, bld
->lodf_bld
.type
,
1822 lod_fpart
, bld
->lodf_bld
.zero
);
1823 need_lerp
= lp_build_any_true_range(&bld
->lodi_bld
, bld
->num_lods
, need_lerp
);
1824 lp_build_name(need_lerp
, "need_lerp");
1827 lp_build_if(&if_ctx
, bld
->gallivm
, need_lerp
);
1830 * We unfortunately need to clamp lod_fpart here since we can get
1831 * negative values which would screw up filtering if not all
1832 * lod_fpart values have same sign.
1834 lod_fpart
= lp_build_max(&bld
->lodf_bld
, lod_fpart
,
1835 bld
->lodf_bld
.zero
);
1836 /* sample the second mipmap level */
1837 lp_build_mipmap_level_sizes(bld
, ilevel1
,
1839 &row_stride1_vec
, &img_stride1_vec
);
1840 if (bld
->num_mips
== 1) {
1841 data_ptr1
= lp_build_get_mipmap_level(bld
, ilevel1
);
1844 data_ptr1
= bld
->base_ptr
;
1845 mipoff1
= lp_build_get_mip_offsets(bld
, ilevel1
);
1847 if (img_filter
== PIPE_TEX_FILTER_NEAREST
) {
1848 lp_build_sample_image_nearest(bld
, size1
,
1849 row_stride1_vec
, img_stride1_vec
,
1850 data_ptr1
, mipoff1
, coords
, offsets
,
1854 lp_build_sample_image_linear(bld
, FALSE
, size1
, NULL
,
1855 row_stride1_vec
, img_stride1_vec
,
1856 data_ptr1
, mipoff1
, coords
, offsets
,
1860 /* interpolate samples from the two mipmap levels */
1862 if (bld
->num_lods
!= bld
->coord_type
.length
)
1863 lod_fpart
= lp_build_unpack_broadcast_aos_scalars(bld
->gallivm
,
1865 bld
->texel_bld
.type
,
1868 for (chan
= 0; chan
< 4; chan
++) {
1869 colors0
[chan
] = lp_build_lerp(&bld
->texel_bld
, lod_fpart
,
1870 colors0
[chan
], colors1
[chan
],
1872 LLVMBuildStore(builder
, colors0
[chan
], colors_out
[chan
]);
1875 lp_build_endif(&if_ctx
);
1881 * Sample the texture/mipmap using given mip filter, and using
1882 * both nearest and linear filtering at the same time depending
1884 * lod can be per quad but linear_mask is always per pixel.
1885 * ilevel0 and ilevel1 indicate the two mipmap levels to sample
1886 * from (vectors or scalars).
1887 * If we're using nearest miplevel sampling the '1' values will be null/unused.
1890 lp_build_sample_mipmap_both(struct lp_build_sample_context
*bld
,
1891 LLVMValueRef linear_mask
,
1892 unsigned mip_filter
,
1893 const LLVMValueRef
*coords
,
1894 const LLVMValueRef
*offsets
,
1895 LLVMValueRef ilevel0
,
1896 LLVMValueRef ilevel1
,
1897 LLVMValueRef lod_fpart
,
1898 LLVMValueRef lod_positive
,
1899 LLVMValueRef
*colors_out
)
1901 LLVMBuilderRef builder
= bld
->gallivm
->builder
;
1902 LLVMValueRef size0
= NULL
;
1903 LLVMValueRef size1
= NULL
;
1904 LLVMValueRef row_stride0_vec
= NULL
;
1905 LLVMValueRef row_stride1_vec
= NULL
;
1906 LLVMValueRef img_stride0_vec
= NULL
;
1907 LLVMValueRef img_stride1_vec
= NULL
;
1908 LLVMValueRef data_ptr0
= NULL
;
1909 LLVMValueRef data_ptr1
= NULL
;
1910 LLVMValueRef mipoff0
= NULL
;
1911 LLVMValueRef mipoff1
= NULL
;
1912 LLVMValueRef colors0
[4], colors1
[4];
1915 /* sample the first mipmap level */
1916 lp_build_mipmap_level_sizes(bld
, ilevel0
,
1918 &row_stride0_vec
, &img_stride0_vec
);
1919 if (bld
->num_mips
== 1) {
1920 data_ptr0
= lp_build_get_mipmap_level(bld
, ilevel0
);
1923 /* This path should work for num_lods 1 too but slightly less efficient */
1924 data_ptr0
= bld
->base_ptr
;
1925 mipoff0
= lp_build_get_mip_offsets(bld
, ilevel0
);
1928 lp_build_sample_image_linear(bld
, FALSE
, size0
, linear_mask
,
1929 row_stride0_vec
, img_stride0_vec
,
1930 data_ptr0
, mipoff0
, coords
, offsets
,
1933 /* Store the first level's colors in the output variables */
1934 for (chan
= 0; chan
< 4; chan
++) {
1935 LLVMBuildStore(builder
, colors0
[chan
], colors_out
[chan
]);
1938 if (mip_filter
== PIPE_TEX_MIPFILTER_LINEAR
) {
1939 struct lp_build_if_state if_ctx
;
1940 LLVMValueRef need_lerp
;
1943 * We'll do mip filtering if any of the quads (or individual
1944 * pixel in case of per-pixel lod) need it.
1945 * Note using lod_positive here not lod_fpart since it may be the same
1946 * condition as that used in the outer "if" in the caller hence llvm
1947 * should be able to merge the branches in this case.
1949 need_lerp
= lp_build_any_true_range(&bld
->lodi_bld
, bld
->num_lods
, lod_positive
);
1950 lp_build_name(need_lerp
, "need_lerp");
1952 lp_build_if(&if_ctx
, bld
->gallivm
, need_lerp
);
1955 * We unfortunately need to clamp lod_fpart here since we can get
1956 * negative values which would screw up filtering if not all
1957 * lod_fpart values have same sign.
1959 lod_fpart
= lp_build_max(&bld
->lodf_bld
, lod_fpart
,
1960 bld
->lodf_bld
.zero
);
1961 /* sample the second mipmap level */
1962 lp_build_mipmap_level_sizes(bld
, ilevel1
,
1964 &row_stride1_vec
, &img_stride1_vec
);
1965 if (bld
->num_mips
== 1) {
1966 data_ptr1
= lp_build_get_mipmap_level(bld
, ilevel1
);
1969 data_ptr1
= bld
->base_ptr
;
1970 mipoff1
= lp_build_get_mip_offsets(bld
, ilevel1
);
1973 lp_build_sample_image_linear(bld
, FALSE
, size1
, linear_mask
,
1974 row_stride1_vec
, img_stride1_vec
,
1975 data_ptr1
, mipoff1
, coords
, offsets
,
1978 /* interpolate samples from the two mipmap levels */
1980 if (bld
->num_lods
!= bld
->coord_type
.length
)
1981 lod_fpart
= lp_build_unpack_broadcast_aos_scalars(bld
->gallivm
,
1983 bld
->texel_bld
.type
,
1986 for (chan
= 0; chan
< 4; chan
++) {
1987 colors0
[chan
] = lp_build_lerp(&bld
->texel_bld
, lod_fpart
,
1988 colors0
[chan
], colors1
[chan
],
1990 LLVMBuildStore(builder
, colors0
[chan
], colors_out
[chan
]);
1993 lp_build_endif(&if_ctx
);
1999 * Build (per-coord) layer value.
2000 * Either clamp layer to valid values or fill in optional out_of_bounds
2001 * value and just return value unclamped.
2004 lp_build_layer_coord(struct lp_build_sample_context
*bld
,
2005 unsigned texture_unit
,
2006 boolean is_cube_array
,
2008 LLVMValueRef
*out_of_bounds
)
2010 LLVMValueRef num_layers
;
2011 struct lp_build_context
*int_coord_bld
= &bld
->int_coord_bld
;
2013 num_layers
= bld
->dynamic_state
->depth(bld
->dynamic_state
, bld
->gallivm
,
2014 bld
->context_ptr
, texture_unit
);
2016 if (out_of_bounds
) {
2017 LLVMValueRef out1
, out
;
2018 assert(!is_cube_array
);
2019 num_layers
= lp_build_broadcast_scalar(int_coord_bld
, num_layers
);
2020 out
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_LESS
, layer
, int_coord_bld
->zero
);
2021 out1
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_GEQUAL
, layer
, num_layers
);
2022 *out_of_bounds
= lp_build_or(int_coord_bld
, out
, out1
);
2026 LLVMValueRef maxlayer
;
2027 LLVMValueRef s
= is_cube_array
? lp_build_const_int32(bld
->gallivm
, 6) :
2029 maxlayer
= lp_build_sub(&bld
->int_bld
, num_layers
, s
);
2030 maxlayer
= lp_build_broadcast_scalar(int_coord_bld
, maxlayer
);
2031 return lp_build_clamp(int_coord_bld
, layer
, int_coord_bld
->zero
, maxlayer
);
2037 * Calculate cube face, lod, mip levels.
2040 lp_build_sample_common(struct lp_build_sample_context
*bld
,
2042 unsigned texture_index
,
2043 unsigned sampler_index
,
2044 LLVMValueRef
*coords
,
2045 const struct lp_derivatives
*derivs
, /* optional */
2046 LLVMValueRef lod_bias
, /* optional */
2047 LLVMValueRef explicit_lod
, /* optional */
2048 LLVMValueRef
*lod_pos_or_zero
,
2050 LLVMValueRef
*lod_fpart
,
2051 LLVMValueRef
*ilevel0
,
2052 LLVMValueRef
*ilevel1
)
2054 const unsigned mip_filter
= bld
->static_sampler_state
->min_mip_filter
;
2055 const unsigned min_filter
= bld
->static_sampler_state
->min_img_filter
;
2056 const unsigned mag_filter
= bld
->static_sampler_state
->mag_img_filter
;
2057 const unsigned target
= bld
->static_texture_state
->target
;
2058 LLVMValueRef first_level
, cube_rho
= NULL
;
2059 LLVMValueRef lod_ipart
= NULL
;
2060 struct lp_derivatives cube_derivs
;
2063 printf("%s mip %d min %d mag %d\n", __FUNCTION__,
2064 mip_filter, min_filter, mag_filter);
2068 * Choose cube face, recompute texcoords for the chosen face and
2069 * compute rho here too (as it requires transform of derivatives).
2071 if (target
== PIPE_TEXTURE_CUBE
|| target
== PIPE_TEXTURE_CUBE_ARRAY
) {
2072 boolean need_derivs
;
2073 need_derivs
= ((min_filter
!= mag_filter
||
2074 mip_filter
!= PIPE_TEX_MIPFILTER_NONE
) &&
2075 !bld
->static_sampler_state
->min_max_lod_equal
&&
2077 lp_build_cube_lookup(bld
, coords
, derivs
, &cube_rho
, &cube_derivs
, need_derivs
);
2078 derivs
= &cube_derivs
;
2079 if (target
== PIPE_TEXTURE_CUBE_ARRAY
) {
2080 /* calculate cube layer coord now */
2081 LLVMValueRef layer
= lp_build_iround(&bld
->coord_bld
, coords
[3]);
2082 LLVMValueRef six
= lp_build_const_int_vec(bld
->gallivm
, bld
->int_coord_type
, 6);
2083 layer
= lp_build_mul(&bld
->int_coord_bld
, layer
, six
);
2084 coords
[3] = lp_build_layer_coord(bld
, texture_index
, TRUE
, layer
, NULL
);
2085 /* because of seamless filtering can't add it to face (coords[2]) here. */
2088 else if (target
== PIPE_TEXTURE_1D_ARRAY
||
2089 target
== PIPE_TEXTURE_2D_ARRAY
) {
2090 coords
[2] = lp_build_iround(&bld
->coord_bld
, coords
[2]);
2091 coords
[2] = lp_build_layer_coord(bld
, texture_index
, FALSE
, coords
[2], NULL
);
2094 if (bld
->static_sampler_state
->compare_mode
!= PIPE_TEX_COMPARE_NONE
) {
2096 * Clamp p coords to [0,1] for fixed function depth texture format here.
2097 * Technically this is not entirely correct for unorm depth as the ref value
2098 * should be converted to the depth format (quantization!) and comparison
2099 * then done in texture format. This would actually help performance (since
2100 * only need to do it once and could save the per-sample conversion of texels
2101 * to floats instead), but it would need more messy code (would need to push
2102 * at least some bits down to actual fetch so conversion could be skipped,
2103 * and would have ugly interaction with border color, would need to convert
2104 * border color to that format too or do some other tricks to make it work).
2106 const struct util_format_description
*format_desc
= bld
->format_desc
;
2108 /* not entirely sure we couldn't end up with non-valid swizzle here */
2109 chan_type
= format_desc
->swizzle
[0] <= PIPE_SWIZZLE_W
?
2110 format_desc
->channel
[format_desc
->swizzle
[0]].type
:
2111 UTIL_FORMAT_TYPE_FLOAT
;
2112 if (chan_type
!= UTIL_FORMAT_TYPE_FLOAT
) {
2113 coords
[4] = lp_build_clamp(&bld
->coord_bld
, coords
[4],
2114 bld
->coord_bld
.zero
, bld
->coord_bld
.one
);
2119 * Compute the level of detail (float).
2121 if (min_filter
!= mag_filter
||
2122 mip_filter
!= PIPE_TEX_MIPFILTER_NONE
|| is_lodq
) {
2123 /* Need to compute lod either to choose mipmap levels or to
2124 * distinguish between minification/magnification with one mipmap level.
2126 lp_build_lod_selector(bld
, is_lodq
, texture_index
, sampler_index
,
2127 coords
[0], coords
[1], coords
[2], cube_rho
,
2128 derivs
, lod_bias
, explicit_lod
,
2130 &lod_ipart
, lod_fpart
, lod_pos_or_zero
);
2132 LLVMValueRef last_level
;
2133 last_level
= bld
->dynamic_state
->last_level(bld
->dynamic_state
,
2137 first_level
= bld
->dynamic_state
->first_level(bld
->dynamic_state
,
2141 last_level
= lp_build_sub(&bld
->int_bld
, last_level
, first_level
);
2142 last_level
= lp_build_int_to_float(&bld
->float_bld
, last_level
);
2143 last_level
= lp_build_broadcast_scalar(&bld
->lodf_bld
, last_level
);
2145 switch (mip_filter
) {
2146 case PIPE_TEX_MIPFILTER_NONE
:
2147 *lod_fpart
= bld
->lodf_bld
.zero
;
2149 case PIPE_TEX_MIPFILTER_NEAREST
:
2150 *lod_fpart
= lp_build_round(&bld
->lodf_bld
, *lod_fpart
);
2152 case PIPE_TEX_MIPFILTER_LINEAR
:
2153 *lod_fpart
= lp_build_clamp(&bld
->lodf_bld
, *lod_fpart
,
2154 bld
->lodf_bld
.zero
, last_level
);
2161 lod_ipart
= bld
->lodi_bld
.zero
;
2162 *lod_pos_or_zero
= bld
->lodi_bld
.zero
;
2165 if (bld
->num_lods
!= bld
->num_mips
) {
2166 /* only makes sense if there's just a single mip level */
2167 assert(bld
->num_mips
== 1);
2168 lod_ipart
= lp_build_extract_range(bld
->gallivm
, lod_ipart
, 0, 1);
2172 * Compute integer mipmap level(s) to fetch texels from: ilevel0, ilevel1
2174 switch (mip_filter
) {
2176 assert(0 && "bad mip_filter value in lp_build_sample_soa()");
2178 case PIPE_TEX_MIPFILTER_NONE
:
2179 /* always use mip level 0 */
2180 first_level
= bld
->dynamic_state
->first_level(bld
->dynamic_state
,
2181 bld
->gallivm
, bld
->context_ptr
,
2183 first_level
= lp_build_broadcast_scalar(&bld
->leveli_bld
, first_level
);
2184 *ilevel0
= first_level
;
2186 case PIPE_TEX_MIPFILTER_NEAREST
:
2188 lp_build_nearest_mip_level(bld
, texture_index
, lod_ipart
, ilevel0
, NULL
);
2190 case PIPE_TEX_MIPFILTER_LINEAR
:
2193 lp_build_linear_mip_levels(bld
, texture_index
,
2194 lod_ipart
, lod_fpart
,
2201 lp_build_clamp_border_color(struct lp_build_sample_context
*bld
,
2202 unsigned sampler_unit
)
2204 struct gallivm_state
*gallivm
= bld
->gallivm
;
2205 LLVMBuilderRef builder
= gallivm
->builder
;
2206 LLVMValueRef border_color_ptr
=
2207 bld
->dynamic_state
->border_color(bld
->dynamic_state
, gallivm
,
2208 bld
->context_ptr
, sampler_unit
);
2209 LLVMValueRef border_color
;
2210 const struct util_format_description
*format_desc
= bld
->format_desc
;
2211 struct lp_type vec4_type
= bld
->texel_type
;
2212 struct lp_build_context vec4_bld
;
2213 LLVMValueRef min_clamp
= NULL
;
2214 LLVMValueRef max_clamp
= NULL
;
2217 * For normalized format need to clamp border color (technically
2218 * probably should also quantize the data). Really sucks doing this
2219 * here but can't avoid at least for now since this is part of
2220 * sampler state and texture format is part of sampler_view state.
2221 * GL expects also expects clamping for uint/sint formats too so
2222 * do that as well (d3d10 can't end up here with uint/sint since it
2223 * only supports them with ld).
2225 vec4_type
.length
= 4;
2226 lp_build_context_init(&vec4_bld
, gallivm
, vec4_type
);
2229 * Vectorized clamping of border color. Loading is a bit of a hack since
2230 * we just cast the pointer to float array to pointer to vec4
2233 border_color_ptr
= lp_build_array_get_ptr(gallivm
, border_color_ptr
,
2234 lp_build_const_int32(gallivm
, 0));
2235 border_color_ptr
= LLVMBuildBitCast(builder
, border_color_ptr
,
2236 LLVMPointerType(vec4_bld
.vec_type
, 0), "");
2237 border_color
= LLVMBuildLoad(builder
, border_color_ptr
, "");
2238 /* we don't have aligned type in the dynamic state unfortunately */
2239 LLVMSetAlignment(border_color
, 4);
2242 * Instead of having some incredibly complex logic which will try to figure out
2243 * clamping necessary for each channel, simply use the first channel, and treat
2244 * mixed signed/unsigned normalized formats specially.
2245 * (Mixed non-normalized, which wouldn't work at all here, do not exist for a
2248 if (format_desc
->layout
== UTIL_FORMAT_LAYOUT_PLAIN
) {
2250 /* d/s needs special handling because both present means just sampling depth */
2251 if (util_format_is_depth_and_stencil(format_desc
->format
)) {
2252 chan
= format_desc
->swizzle
[0];
2255 chan
= util_format_get_first_non_void_channel(format_desc
->format
);
2257 if (chan
>= 0 && chan
<= PIPE_SWIZZLE_W
) {
2258 unsigned chan_type
= format_desc
->channel
[chan
].type
;
2259 unsigned chan_norm
= format_desc
->channel
[chan
].normalized
;
2260 unsigned chan_pure
= format_desc
->channel
[chan
].pure_integer
;
2261 if (chan_type
== UTIL_FORMAT_TYPE_SIGNED
) {
2263 min_clamp
= lp_build_const_vec(gallivm
, vec4_type
, -1.0F
);
2264 max_clamp
= vec4_bld
.one
;
2266 else if (chan_pure
) {
2268 * Border color was stored as int, hence need min/max clamp
2269 * only if chan has less than 32 bits..
2271 unsigned chan_size
= format_desc
->channel
[chan
].size
;
2272 if (chan_size
< 32) {
2273 min_clamp
= lp_build_const_int_vec(gallivm
, vec4_type
,
2274 0 - (1 << (chan_size
- 1)));
2275 max_clamp
= lp_build_const_int_vec(gallivm
, vec4_type
,
2276 (1 << (chan_size
- 1)) - 1);
2279 /* TODO: no idea about non-pure, non-normalized! */
2281 else if (chan_type
== UTIL_FORMAT_TYPE_UNSIGNED
) {
2283 min_clamp
= vec4_bld
.zero
;
2284 max_clamp
= vec4_bld
.one
;
2287 * Need a ugly hack here, because we don't have Z32_FLOAT_X8X24
2288 * we use Z32_FLOAT_S8X24 to imply sampling depth component
2289 * and ignoring stencil, which will blow up here if we try to
2290 * do a uint clamp in a float texel build...
2291 * And even if we had that format, mesa st also thinks using z24s8
2292 * means depth sampling ignoring stencil.
2294 else if (chan_pure
) {
2296 * Border color was stored as uint, hence never need min
2297 * clamp, and only need max clamp if chan has less than 32 bits.
2299 unsigned chan_size
= format_desc
->channel
[chan
].size
;
2300 if (chan_size
< 32) {
2301 max_clamp
= lp_build_const_int_vec(gallivm
, vec4_type
,
2302 (1 << chan_size
) - 1);
2304 /* TODO: no idea about non-pure, non-normalized! */
2307 else if (chan_type
== UTIL_FORMAT_TYPE_FIXED
) {
2308 /* TODO: I have no idea what clamp this would need if any! */
2311 /* mixed plain formats (or different pure size) */
2312 switch (format_desc
->format
) {
2313 case PIPE_FORMAT_B10G10R10A2_UINT
:
2314 case PIPE_FORMAT_R10G10B10A2_UINT
:
2316 unsigned max10
= (1 << 10) - 1;
2317 max_clamp
= lp_build_const_aos(gallivm
, vec4_type
, max10
, max10
,
2318 max10
, (1 << 2) - 1, NULL
);
2321 case PIPE_FORMAT_R10SG10SB10SA2U_NORM
:
2322 min_clamp
= lp_build_const_aos(gallivm
, vec4_type
, -1.0F
, -1.0F
,
2324 max_clamp
= vec4_bld
.one
;
2326 case PIPE_FORMAT_R8SG8SB8UX8U_NORM
:
2327 case PIPE_FORMAT_R5SG5SB6U_NORM
:
2328 min_clamp
= lp_build_const_aos(gallivm
, vec4_type
, -1.0F
, -1.0F
,
2330 max_clamp
= vec4_bld
.one
;
2337 /* cannot figure this out from format description */
2338 if (format_desc
->layout
== UTIL_FORMAT_LAYOUT_S3TC
) {
2339 /* s3tc formats are always unorm */
2340 min_clamp
= vec4_bld
.zero
;
2341 max_clamp
= vec4_bld
.one
;
2343 else if (format_desc
->layout
== UTIL_FORMAT_LAYOUT_RGTC
||
2344 format_desc
->layout
== UTIL_FORMAT_LAYOUT_ETC
) {
2345 switch (format_desc
->format
) {
2346 case PIPE_FORMAT_RGTC1_UNORM
:
2347 case PIPE_FORMAT_RGTC2_UNORM
:
2348 case PIPE_FORMAT_LATC1_UNORM
:
2349 case PIPE_FORMAT_LATC2_UNORM
:
2350 case PIPE_FORMAT_ETC1_RGB8
:
2351 min_clamp
= vec4_bld
.zero
;
2352 max_clamp
= vec4_bld
.one
;
2354 case PIPE_FORMAT_RGTC1_SNORM
:
2355 case PIPE_FORMAT_RGTC2_SNORM
:
2356 case PIPE_FORMAT_LATC1_SNORM
:
2357 case PIPE_FORMAT_LATC2_SNORM
:
2358 min_clamp
= lp_build_const_vec(gallivm
, vec4_type
, -1.0F
);
2359 max_clamp
= vec4_bld
.one
;
2367 * all others from subsampled/other group, though we don't care
2368 * about yuv (and should not have any from zs here)
2370 else if (format_desc
->colorspace
!= UTIL_FORMAT_COLORSPACE_YUV
){
2371 switch (format_desc
->format
) {
2372 case PIPE_FORMAT_R8G8_B8G8_UNORM
:
2373 case PIPE_FORMAT_G8R8_G8B8_UNORM
:
2374 case PIPE_FORMAT_G8R8_B8R8_UNORM
:
2375 case PIPE_FORMAT_R8G8_R8B8_UNORM
:
2376 case PIPE_FORMAT_R1_UNORM
: /* doesn't make sense but ah well */
2377 min_clamp
= vec4_bld
.zero
;
2378 max_clamp
= vec4_bld
.one
;
2380 case PIPE_FORMAT_R8G8Bx_SNORM
:
2381 min_clamp
= lp_build_const_vec(gallivm
, vec4_type
, -1.0F
);
2382 max_clamp
= vec4_bld
.one
;
2385 * Note smallfloat formats usually don't need clamping
2386 * (they still have infinite range) however this is not
2387 * true for r11g11b10 and r9g9b9e5, which can't represent
2388 * negative numbers (and additionally r9g9b9e5 can't represent
2389 * very large numbers). d3d10 seems happy without clamping in
2390 * this case, but gl spec is pretty clear: "for floating
2391 * point and integer formats, border values are clamped to
2392 * the representable range of the format" so do that here.
2394 case PIPE_FORMAT_R11G11B10_FLOAT
:
2395 min_clamp
= vec4_bld
.zero
;
2397 case PIPE_FORMAT_R9G9B9E5_FLOAT
:
2398 min_clamp
= vec4_bld
.zero
;
2399 max_clamp
= lp_build_const_vec(gallivm
, vec4_type
, MAX_RGB9E5
);
2409 border_color
= lp_build_max(&vec4_bld
, border_color
, min_clamp
);
2412 border_color
= lp_build_min(&vec4_bld
, border_color
, max_clamp
);
2415 bld
->border_color_clamped
= border_color
;
2420 * General texture sampling codegen.
2421 * This function handles texture sampling for all texture targets (1D,
2422 * 2D, 3D, cube) and all filtering modes.
2425 lp_build_sample_general(struct lp_build_sample_context
*bld
,
2426 unsigned sampler_unit
,
2428 const LLVMValueRef
*coords
,
2429 const LLVMValueRef
*offsets
,
2430 LLVMValueRef lod_positive
,
2431 LLVMValueRef lod_fpart
,
2432 LLVMValueRef ilevel0
,
2433 LLVMValueRef ilevel1
,
2434 LLVMValueRef
*colors_out
)
2436 LLVMBuilderRef builder
= bld
->gallivm
->builder
;
2437 const struct lp_static_sampler_state
*sampler_state
= bld
->static_sampler_state
;
2438 const unsigned mip_filter
= sampler_state
->min_mip_filter
;
2439 const unsigned min_filter
= sampler_state
->min_img_filter
;
2440 const unsigned mag_filter
= sampler_state
->mag_img_filter
;
2441 LLVMValueRef texels
[4];
2444 /* if we need border color, (potentially) clamp it now */
2445 if (lp_sampler_wrap_mode_uses_border_color(sampler_state
->wrap_s
,
2449 lp_sampler_wrap_mode_uses_border_color(sampler_state
->wrap_t
,
2453 lp_sampler_wrap_mode_uses_border_color(sampler_state
->wrap_r
,
2456 lp_build_clamp_border_color(bld
, sampler_unit
);
2461 * Get/interpolate texture colors.
2464 for (chan
= 0; chan
< 4; ++chan
) {
2465 texels
[chan
] = lp_build_alloca(bld
->gallivm
, bld
->texel_bld
.vec_type
, "");
2466 lp_build_name(texels
[chan
], "sampler%u_texel_%c_var", sampler_unit
, "xyzw"[chan
]);
2469 if (min_filter
== mag_filter
) {
2470 /* no need to distinguish between minification and magnification */
2471 lp_build_sample_mipmap(bld
, min_filter
, mip_filter
,
2474 ilevel0
, ilevel1
, lod_fpart
,
2479 * Could also get rid of the if-logic and always use mipmap_both, both
2480 * for the single lod and multi-lod case if nothing really uses this.
2482 if (bld
->num_lods
== 1) {
2483 /* Emit conditional to choose min image filter or mag image filter
2484 * depending on the lod being > 0 or <= 0, respectively.
2486 struct lp_build_if_state if_ctx
;
2488 lod_positive
= LLVMBuildTrunc(builder
, lod_positive
,
2489 LLVMInt1TypeInContext(bld
->gallivm
->context
),
2492 lp_build_if(&if_ctx
, bld
->gallivm
, lod_positive
);
2494 /* Use the minification filter */
2495 lp_build_sample_mipmap(bld
, min_filter
, mip_filter
, FALSE
,
2497 ilevel0
, ilevel1
, lod_fpart
,
2500 lp_build_else(&if_ctx
);
2502 /* Use the magnification filter */
2503 lp_build_sample_mipmap(bld
, mag_filter
, PIPE_TEX_MIPFILTER_NONE
,
2506 ilevel0
, NULL
, NULL
,
2509 lp_build_endif(&if_ctx
);
2512 LLVMValueRef need_linear
, linear_mask
;
2513 unsigned mip_filter_for_nearest
;
2514 struct lp_build_if_state if_ctx
;
2516 if (min_filter
== PIPE_TEX_FILTER_LINEAR
) {
2517 linear_mask
= lod_positive
;
2518 mip_filter_for_nearest
= PIPE_TEX_MIPFILTER_NONE
;
2521 linear_mask
= lp_build_not(&bld
->lodi_bld
, lod_positive
);
2522 mip_filter_for_nearest
= mip_filter
;
2524 need_linear
= lp_build_any_true_range(&bld
->lodi_bld
, bld
->num_lods
,
2526 lp_build_name(need_linear
, "need_linear");
2528 if (bld
->num_lods
!= bld
->coord_type
.length
) {
2529 linear_mask
= lp_build_unpack_broadcast_aos_scalars(bld
->gallivm
,
2531 bld
->int_coord_type
,
2535 lp_build_if(&if_ctx
, bld
->gallivm
, need_linear
);
2538 * Do sampling with both filters simultaneously. This means using
2539 * a linear filter and doing some tricks (with weights) for the pixels
2540 * which need nearest filter.
2541 * Note that it's probably rare some pixels need nearest and some
2542 * linear filter but the fixups required for the nearest pixels
2543 * aren't all that complicated so just always run a combined path
2544 * if at least some pixels require linear.
2546 lp_build_sample_mipmap_both(bld
, linear_mask
, mip_filter
,
2549 lod_fpart
, lod_positive
,
2552 lp_build_else(&if_ctx
);
2555 * All pixels require just nearest filtering, which is way
2556 * cheaper than linear, hence do a separate path for that.
2558 lp_build_sample_mipmap(bld
, PIPE_TEX_FILTER_NEAREST
,
2559 mip_filter_for_nearest
, FALSE
,
2561 ilevel0
, ilevel1
, lod_fpart
,
2564 lp_build_endif(&if_ctx
);
2568 for (chan
= 0; chan
< 4; ++chan
) {
2569 colors_out
[chan
] = LLVMBuildLoad(builder
, texels
[chan
], "");
2570 lp_build_name(colors_out
[chan
], "sampler%u_texel_%c", sampler_unit
, "xyzw"[chan
]);
2576 * Texel fetch function.
2577 * In contrast to general sampling there is no filtering, no coord minification,
2578 * lod (if any) is always explicit uint, coords are uints (in terms of texel units)
2579 * directly to be applied to the selected mip level (after adding texel offsets).
2580 * This function handles texel fetch for all targets where texel fetch is supported
2581 * (no cube maps, but 1d, 2d, 3d are supported, arrays and buffers should be too).
2584 lp_build_fetch_texel(struct lp_build_sample_context
*bld
,
2585 unsigned texture_unit
,
2586 const LLVMValueRef
*coords
,
2587 LLVMValueRef explicit_lod
,
2588 const LLVMValueRef
*offsets
,
2589 LLVMValueRef
*colors_out
)
2591 struct lp_build_context
*perquadi_bld
= &bld
->lodi_bld
;
2592 struct lp_build_context
*int_coord_bld
= &bld
->int_coord_bld
;
2593 unsigned dims
= bld
->dims
, chan
;
2594 unsigned target
= bld
->static_texture_state
->target
;
2595 boolean out_of_bound_ret_zero
= TRUE
;
2596 LLVMValueRef size
, ilevel
;
2597 LLVMValueRef row_stride_vec
= NULL
, img_stride_vec
= NULL
;
2598 LLVMValueRef x
= coords
[0], y
= coords
[1], z
= coords
[2];
2599 LLVMValueRef width
, height
, depth
, i
, j
;
2600 LLVMValueRef offset
, out_of_bounds
, out1
;
2602 out_of_bounds
= int_coord_bld
->zero
;
2604 if (explicit_lod
&& bld
->static_texture_state
->target
!= PIPE_BUFFER
) {
2605 if (bld
->num_mips
!= int_coord_bld
->type
.length
) {
2606 ilevel
= lp_build_pack_aos_scalars(bld
->gallivm
, int_coord_bld
->type
,
2607 perquadi_bld
->type
, explicit_lod
, 0);
2610 ilevel
= explicit_lod
;
2612 lp_build_nearest_mip_level(bld
, texture_unit
, ilevel
, &ilevel
,
2613 out_of_bound_ret_zero
? &out_of_bounds
: NULL
);
2616 assert(bld
->num_mips
== 1);
2617 if (bld
->static_texture_state
->target
!= PIPE_BUFFER
) {
2618 ilevel
= bld
->dynamic_state
->first_level(bld
->dynamic_state
, bld
->gallivm
,
2619 bld
->context_ptr
, texture_unit
);
2622 ilevel
= lp_build_const_int32(bld
->gallivm
, 0);
2625 lp_build_mipmap_level_sizes(bld
, ilevel
,
2627 &row_stride_vec
, &img_stride_vec
);
2628 lp_build_extract_image_sizes(bld
, &bld
->int_size_bld
, int_coord_bld
->type
,
2629 size
, &width
, &height
, &depth
);
2631 if (target
== PIPE_TEXTURE_1D_ARRAY
||
2632 target
== PIPE_TEXTURE_2D_ARRAY
) {
2633 if (out_of_bound_ret_zero
) {
2634 z
= lp_build_layer_coord(bld
, texture_unit
, FALSE
, z
, &out1
);
2635 out_of_bounds
= lp_build_or(int_coord_bld
, out_of_bounds
, out1
);
2638 z
= lp_build_layer_coord(bld
, texture_unit
, FALSE
, z
, NULL
);
2642 /* This is a lot like border sampling */
2645 * coords are really unsigned, offsets are signed, but I don't think
2646 * exceeding 31 bits is possible
2648 x
= lp_build_add(int_coord_bld
, x
, offsets
[0]);
2650 out1
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_LESS
, x
, int_coord_bld
->zero
);
2651 out_of_bounds
= lp_build_or(int_coord_bld
, out_of_bounds
, out1
);
2652 out1
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_GEQUAL
, x
, width
);
2653 out_of_bounds
= lp_build_or(int_coord_bld
, out_of_bounds
, out1
);
2657 y
= lp_build_add(int_coord_bld
, y
, offsets
[1]);
2659 out1
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_LESS
, y
, int_coord_bld
->zero
);
2660 out_of_bounds
= lp_build_or(int_coord_bld
, out_of_bounds
, out1
);
2661 out1
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_GEQUAL
, y
, height
);
2662 out_of_bounds
= lp_build_or(int_coord_bld
, out_of_bounds
, out1
);
2666 z
= lp_build_add(int_coord_bld
, z
, offsets
[2]);
2668 out1
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_LESS
, z
, int_coord_bld
->zero
);
2669 out_of_bounds
= lp_build_or(int_coord_bld
, out_of_bounds
, out1
);
2670 out1
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_GEQUAL
, z
, depth
);
2671 out_of_bounds
= lp_build_or(int_coord_bld
, out_of_bounds
, out1
);
2675 lp_build_sample_offset(int_coord_bld
,
2677 x
, y
, z
, row_stride_vec
, img_stride_vec
,
2680 if (bld
->static_texture_state
->target
!= PIPE_BUFFER
) {
2681 offset
= lp_build_add(int_coord_bld
, offset
,
2682 lp_build_get_mip_offsets(bld
, ilevel
));
2685 offset
= lp_build_andnot(int_coord_bld
, offset
, out_of_bounds
);
2687 lp_build_fetch_rgba_soa(bld
->gallivm
,
2689 bld
->texel_type
, TRUE
,
2690 bld
->base_ptr
, offset
,
2695 if (out_of_bound_ret_zero
) {
2697 * Only needed for ARB_robust_buffer_access_behavior and d3d10.
2698 * Could use min/max above instead of out-of-bounds comparisons
2699 * if we don't care about the result returned for out-of-bounds.
2701 for (chan
= 0; chan
< 4; chan
++) {
2702 colors_out
[chan
] = lp_build_select(&bld
->texel_bld
, out_of_bounds
,
2703 bld
->texel_bld
.zero
, colors_out
[chan
]);
2710 * Just set texels to white instead of actually sampling the texture.
2714 lp_build_sample_nop(struct gallivm_state
*gallivm
,
2715 struct lp_type type
,
2716 const LLVMValueRef
*coords
,
2717 LLVMValueRef texel_out
[4])
2719 LLVMValueRef one
= lp_build_one(gallivm
, type
);
2722 for (chan
= 0; chan
< 4; chan
++) {
2723 texel_out
[chan
] = one
;
2729 * Build the actual texture sampling code.
2730 * 'texel' will return a vector of four LLVMValueRefs corresponding to
2732 * \param type vector float type to use for coords, etc.
2734 * \param derivs partial derivatives of (s,t,r,q) with respect to x and y
2737 lp_build_sample_soa_code(struct gallivm_state
*gallivm
,
2738 const struct lp_static_texture_state
*static_texture_state
,
2739 const struct lp_static_sampler_state
*static_sampler_state
,
2740 struct lp_sampler_dynamic_state
*dynamic_state
,
2741 struct lp_type type
,
2742 unsigned sample_key
,
2743 unsigned texture_index
,
2744 unsigned sampler_index
,
2745 LLVMValueRef context_ptr
,
2746 LLVMValueRef thread_data_ptr
,
2747 const LLVMValueRef
*coords
,
2748 const LLVMValueRef
*offsets
,
2749 const struct lp_derivatives
*derivs
, /* optional */
2750 LLVMValueRef lod
, /* optional */
2751 LLVMValueRef texel_out
[4])
2753 unsigned target
= static_texture_state
->target
;
2754 unsigned dims
= texture_dims(target
);
2755 unsigned num_quads
= type
.length
/ 4;
2756 unsigned mip_filter
, min_img_filter
, mag_img_filter
, i
;
2757 struct lp_build_sample_context bld
;
2758 struct lp_static_sampler_state derived_sampler_state
= *static_sampler_state
;
2759 LLVMTypeRef i32t
= LLVMInt32TypeInContext(gallivm
->context
);
2760 LLVMBuilderRef builder
= gallivm
->builder
;
2761 LLVMValueRef tex_width
, newcoords
[5];
2762 enum lp_sampler_lod_property lod_property
;
2763 enum lp_sampler_lod_control lod_control
;
2764 enum lp_sampler_op_type op_type
;
2765 LLVMValueRef lod_bias
= NULL
;
2766 LLVMValueRef explicit_lod
= NULL
;
2767 boolean op_is_tex
, op_is_lodq
, op_is_gather
;
2770 enum pipe_format fmt
= static_texture_state
->format
;
2771 debug_printf("Sample from %s\n", util_format_name(fmt
));
2774 lod_property
= (sample_key
& LP_SAMPLER_LOD_PROPERTY_MASK
) >>
2775 LP_SAMPLER_LOD_PROPERTY_SHIFT
;
2776 lod_control
= (sample_key
& LP_SAMPLER_LOD_CONTROL_MASK
) >>
2777 LP_SAMPLER_LOD_CONTROL_SHIFT
;
2778 op_type
= (sample_key
& LP_SAMPLER_OP_TYPE_MASK
) >>
2779 LP_SAMPLER_OP_TYPE_SHIFT
;
2781 op_is_tex
= op_type
== LP_SAMPLER_OP_TEXTURE
;
2782 op_is_lodq
= op_type
== LP_SAMPLER_OP_LODQ
;
2783 op_is_gather
= op_type
== LP_SAMPLER_OP_GATHER
;
2785 if (lod_control
== LP_SAMPLER_LOD_BIAS
) {
2788 assert(derivs
== NULL
);
2790 else if (lod_control
== LP_SAMPLER_LOD_EXPLICIT
) {
2793 assert(derivs
== NULL
);
2795 else if (lod_control
== LP_SAMPLER_LOD_DERIVATIVES
) {
2797 assert(lod
== NULL
);
2800 assert(derivs
== NULL
);
2801 assert(lod
== NULL
);
2804 if (static_texture_state
->format
== PIPE_FORMAT_NONE
) {
2806 * If there's nothing bound, format is NONE, and we must return
2807 * all zero as mandated by d3d10 in this case.
2810 LLVMValueRef zero
= lp_build_zero(gallivm
, type
);
2811 for (chan
= 0; chan
< 4; chan
++) {
2812 texel_out
[chan
] = zero
;
2817 assert(type
.floating
);
2819 /* Setup our build context */
2820 memset(&bld
, 0, sizeof bld
);
2821 bld
.gallivm
= gallivm
;
2822 bld
.context_ptr
= context_ptr
;
2823 bld
.static_sampler_state
= &derived_sampler_state
;
2824 bld
.static_texture_state
= static_texture_state
;
2825 bld
.dynamic_state
= dynamic_state
;
2826 bld
.format_desc
= util_format_description(static_texture_state
->format
);
2829 if (gallivm_perf
& GALLIVM_PERF_NO_QUAD_LOD
|| op_is_lodq
) {
2830 bld
.no_quad_lod
= TRUE
;
2832 if (gallivm_perf
& GALLIVM_PERF_NO_RHO_APPROX
|| op_is_lodq
) {
2833 bld
.no_rho_approx
= TRUE
;
2835 if (gallivm_perf
& GALLIVM_PERF_NO_BRILINEAR
|| op_is_lodq
) {
2836 bld
.no_brilinear
= TRUE
;
2839 bld
.vector_width
= lp_type_width(type
);
2841 bld
.float_type
= lp_type_float(32);
2842 bld
.int_type
= lp_type_int(32);
2843 bld
.coord_type
= type
;
2844 bld
.int_coord_type
= lp_int_type(type
);
2845 bld
.float_size_in_type
= lp_type_float(32);
2846 bld
.float_size_in_type
.length
= dims
> 1 ? 4 : 1;
2847 bld
.int_size_in_type
= lp_int_type(bld
.float_size_in_type
);
2848 bld
.texel_type
= type
;
2850 /* always using the first channel hopefully should be safe,
2851 * if not things WILL break in other places anyway.
2853 if (bld
.format_desc
->colorspace
== UTIL_FORMAT_COLORSPACE_RGB
&&
2854 bld
.format_desc
->channel
[0].pure_integer
) {
2855 if (bld
.format_desc
->channel
[0].type
== UTIL_FORMAT_TYPE_SIGNED
) {
2856 bld
.texel_type
= lp_type_int_vec(type
.width
, type
.width
* type
.length
);
2858 else if (bld
.format_desc
->channel
[0].type
== UTIL_FORMAT_TYPE_UNSIGNED
) {
2859 bld
.texel_type
= lp_type_uint_vec(type
.width
, type
.width
* type
.length
);
2862 else if (util_format_has_stencil(bld
.format_desc
) &&
2863 !util_format_has_depth(bld
.format_desc
)) {
2864 /* for stencil only formats, sample stencil (uint) */
2865 bld
.texel_type
= lp_type_int_vec(type
.width
, type
.width
* type
.length
);
2868 if (!static_texture_state
->level_zero_only
||
2869 !static_sampler_state
->max_lod_pos
|| op_is_lodq
) {
2870 derived_sampler_state
.min_mip_filter
= static_sampler_state
->min_mip_filter
;
2872 derived_sampler_state
.min_mip_filter
= PIPE_TEX_MIPFILTER_NONE
;
2876 * gather4 is exactly like GL_LINEAR filtering but in the end skipping
2877 * the actual filtering. Using mostly the same paths, so cube face
2878 * selection, coord wrapping etc. all naturally uses the same code.
2880 derived_sampler_state
.min_mip_filter
= PIPE_TEX_MIPFILTER_NONE
;
2881 derived_sampler_state
.min_img_filter
= PIPE_TEX_FILTER_LINEAR
;
2882 derived_sampler_state
.mag_img_filter
= PIPE_TEX_FILTER_LINEAR
;
2884 mip_filter
= derived_sampler_state
.min_mip_filter
;
2887 debug_printf(" .min_mip_filter = %u\n", derived_sampler_state
.min_mip_filter
);
2890 if (static_texture_state
->target
== PIPE_TEXTURE_CUBE
||
2891 static_texture_state
->target
== PIPE_TEXTURE_CUBE_ARRAY
)
2894 * Seamless filtering ignores wrap modes.
2895 * Setting to CLAMP_TO_EDGE is correct for nearest filtering, for
2896 * bilinear it's not correct but way better than using for instance repeat.
2897 * Note we even set this for non-seamless. Technically GL allows any wrap
2898 * mode, which made sense when supporting true borders (can get seamless
2899 * effect with border and CLAMP_TO_BORDER), but gallium doesn't support
2900 * borders and d3d9 requires wrap modes to be ignored and it's a pain to fix
2901 * up the sampler state (as it makes it texture dependent).
2903 derived_sampler_state
.wrap_s
= PIPE_TEX_WRAP_CLAMP_TO_EDGE
;
2904 derived_sampler_state
.wrap_t
= PIPE_TEX_WRAP_CLAMP_TO_EDGE
;
2907 * We could force CLAMP to CLAMP_TO_EDGE here if min/mag filter is nearest,
2908 * so AoS path could be used. Not sure it's worth the trouble...
2911 min_img_filter
= derived_sampler_state
.min_img_filter
;
2912 mag_img_filter
= derived_sampler_state
.mag_img_filter
;
2916 * This is all a bit complicated different paths are chosen for performance
2918 * Essentially, there can be 1 lod per element, 1 lod per quad or 1 lod for
2919 * everything (the last two options are equivalent for 4-wide case).
2920 * If there's per-quad lod but we split to 4-wide so we can use AoS, per-quad
2921 * lod is calculated then the lod value extracted afterwards so making this
2922 * case basically the same as far as lod handling is concerned for the
2923 * further sample/filter code as the 1 lod for everything case.
2924 * Different lod handling mostly shows up when building mipmap sizes
2925 * (lp_build_mipmap_level_sizes() and friends) and also in filtering
2926 * (getting the fractional part of the lod to the right texels).
2930 * There are other situations where at least the multiple int lods could be
2931 * avoided like min and max lod being equal.
2933 bld
.num_mips
= bld
.num_lods
= 1;
2935 if (bld
.no_quad_lod
&& bld
.no_rho_approx
&&
2936 ((mip_filter
!= PIPE_TEX_MIPFILTER_NONE
&& op_is_tex
&&
2937 (static_texture_state
->target
== PIPE_TEXTURE_CUBE
||
2938 static_texture_state
->target
== PIPE_TEXTURE_CUBE_ARRAY
)) ||
2941 * special case for using per-pixel lod even for implicit lod,
2942 * which is generally never required (ok by APIs) except to please
2943 * some (somewhat broken imho) tests (because per-pixel face selection
2944 * can cause derivatives to be different for pixels outside the primitive
2945 * due to the major axis division even if pre-project derivatives are
2947 * For lodq, we do it to simply avoid scalar pack / unpack (albeit for
2948 * cube maps we do indeed get per-pixel lod values).
2950 bld
.num_mips
= type
.length
;
2951 bld
.num_lods
= type
.length
;
2953 else if (lod_property
== LP_SAMPLER_LOD_PER_ELEMENT
||
2954 (explicit_lod
|| lod_bias
|| derivs
)) {
2955 if ((!op_is_tex
&& target
!= PIPE_BUFFER
) ||
2956 (op_is_tex
&& mip_filter
!= PIPE_TEX_MIPFILTER_NONE
)) {
2957 bld
.num_mips
= type
.length
;
2958 bld
.num_lods
= type
.length
;
2960 else if (op_is_tex
&& min_img_filter
!= mag_img_filter
) {
2962 bld
.num_lods
= type
.length
;
2965 /* TODO: for true scalar_lod should only use 1 lod value */
2966 else if ((!op_is_tex
&& explicit_lod
&& target
!= PIPE_BUFFER
) ||
2967 (op_is_tex
&& mip_filter
!= PIPE_TEX_MIPFILTER_NONE
)) {
2968 bld
.num_mips
= num_quads
;
2969 bld
.num_lods
= num_quads
;
2971 else if (op_is_tex
&& min_img_filter
!= mag_img_filter
) {
2973 bld
.num_lods
= num_quads
;
2977 bld
.lodf_type
= type
;
2978 /* we want native vector size to be able to use our intrinsics */
2979 if (bld
.num_lods
!= type
.length
) {
2980 /* TODO: this currently always has to be per-quad or per-element */
2981 bld
.lodf_type
.length
= type
.length
> 4 ? ((type
.length
+ 15) / 16) * 4 : 1;
2983 bld
.lodi_type
= lp_int_type(bld
.lodf_type
);
2984 bld
.levelf_type
= bld
.lodf_type
;
2985 if (bld
.num_mips
== 1) {
2986 bld
.levelf_type
.length
= 1;
2988 bld
.leveli_type
= lp_int_type(bld
.levelf_type
);
2989 bld
.float_size_type
= bld
.float_size_in_type
;
2990 /* Note: size vectors may not be native. They contain minified w/h/d/_ values,
2991 * with per-element lod that is w0/h0/d0/_/w1/h1/d1_/... so up to 8x4f32 */
2992 if (bld
.num_mips
> 1) {
2993 bld
.float_size_type
.length
= bld
.num_mips
== type
.length
?
2994 bld
.num_mips
* bld
.float_size_in_type
.length
:
2997 bld
.int_size_type
= lp_int_type(bld
.float_size_type
);
2999 lp_build_context_init(&bld
.float_bld
, gallivm
, bld
.float_type
);
3000 lp_build_context_init(&bld
.float_vec_bld
, gallivm
, type
);
3001 lp_build_context_init(&bld
.int_bld
, gallivm
, bld
.int_type
);
3002 lp_build_context_init(&bld
.coord_bld
, gallivm
, bld
.coord_type
);
3003 lp_build_context_init(&bld
.int_coord_bld
, gallivm
, bld
.int_coord_type
);
3004 lp_build_context_init(&bld
.int_size_in_bld
, gallivm
, bld
.int_size_in_type
);
3005 lp_build_context_init(&bld
.float_size_in_bld
, gallivm
, bld
.float_size_in_type
);
3006 lp_build_context_init(&bld
.int_size_bld
, gallivm
, bld
.int_size_type
);
3007 lp_build_context_init(&bld
.float_size_bld
, gallivm
, bld
.float_size_type
);
3008 lp_build_context_init(&bld
.texel_bld
, gallivm
, bld
.texel_type
);
3009 lp_build_context_init(&bld
.levelf_bld
, gallivm
, bld
.levelf_type
);
3010 lp_build_context_init(&bld
.leveli_bld
, gallivm
, bld
.leveli_type
);
3011 lp_build_context_init(&bld
.lodf_bld
, gallivm
, bld
.lodf_type
);
3012 lp_build_context_init(&bld
.lodi_bld
, gallivm
, bld
.lodi_type
);
3014 /* Get the dynamic state */
3015 tex_width
= dynamic_state
->width(dynamic_state
, gallivm
,
3016 context_ptr
, texture_index
);
3017 bld
.row_stride_array
= dynamic_state
->row_stride(dynamic_state
, gallivm
,
3018 context_ptr
, texture_index
);
3019 bld
.img_stride_array
= dynamic_state
->img_stride(dynamic_state
, gallivm
,
3020 context_ptr
, texture_index
);
3021 bld
.base_ptr
= dynamic_state
->base_ptr(dynamic_state
, gallivm
,
3022 context_ptr
, texture_index
);
3023 bld
.mip_offsets
= dynamic_state
->mip_offsets(dynamic_state
, gallivm
,
3024 context_ptr
, texture_index
);
3025 /* Note that mip_offsets is an array[level] of offsets to texture images */
3027 if (dynamic_state
->cache_ptr
&& thread_data_ptr
) {
3028 bld
.cache
= dynamic_state
->cache_ptr(dynamic_state
, gallivm
,
3029 thread_data_ptr
, texture_index
);
3032 /* width, height, depth as single int vector */
3034 bld
.int_size
= tex_width
;
3037 bld
.int_size
= LLVMBuildInsertElement(builder
, bld
.int_size_in_bld
.undef
,
3039 LLVMConstInt(i32t
, 0, 0), "");
3041 LLVMValueRef tex_height
=
3042 dynamic_state
->height(dynamic_state
, gallivm
,
3043 context_ptr
, texture_index
);
3044 bld
.int_size
= LLVMBuildInsertElement(builder
, bld
.int_size
,
3046 LLVMConstInt(i32t
, 1, 0), "");
3048 LLVMValueRef tex_depth
=
3049 dynamic_state
->depth(dynamic_state
, gallivm
, context_ptr
,
3051 bld
.int_size
= LLVMBuildInsertElement(builder
, bld
.int_size
,
3053 LLVMConstInt(i32t
, 2, 0), "");
3058 for (i
= 0; i
< 5; i
++) {
3059 newcoords
[i
] = coords
[i
];
3062 if (util_format_is_pure_integer(static_texture_state
->format
) &&
3063 !util_format_has_depth(bld
.format_desc
) && op_is_tex
&&
3064 (static_sampler_state
->min_mip_filter
== PIPE_TEX_MIPFILTER_LINEAR
||
3065 static_sampler_state
->min_img_filter
== PIPE_TEX_FILTER_LINEAR
||
3066 static_sampler_state
->mag_img_filter
== PIPE_TEX_FILTER_LINEAR
)) {
3068 * Bail if impossible filtering is specified (the awkard additional
3069 * depth check is because it is legal in gallium to have things like S8Z24
3070 * here which would say it's pure int despite such formats should sample
3071 * the depth component).
3072 * In GL such filters make the texture incomplete, this makes it robust
3073 * against state trackers which set this up regardless (we'd crash in the
3074 * lerp later otherwise).
3075 * At least in some apis it may be legal to use such filters with lod
3076 * queries and/or gather (at least for gather d3d10 says only the wrap
3077 * bits are really used hence filter bits are likely simply ignored).
3078 * For fetch, we don't get valid samplers either way here.
3081 LLVMValueRef zero
= lp_build_zero(gallivm
, type
);
3082 for (chan
= 0; chan
< 4; chan
++) {
3083 texel_out
[chan
] = zero
;
3089 /* For debug: no-op texture sampling */
3090 lp_build_sample_nop(gallivm
,
3096 else if (op_type
== LP_SAMPLER_OP_FETCH
) {
3097 lp_build_fetch_texel(&bld
, texture_index
, newcoords
,
3103 LLVMValueRef lod_fpart
= NULL
, lod_positive
= NULL
;
3104 LLVMValueRef ilevel0
= NULL
, ilevel1
= NULL
, lod
= NULL
;
3107 use_aos
= util_format_fits_8unorm(bld
.format_desc
) &&
3109 /* not sure this is strictly needed or simply impossible */
3110 derived_sampler_state
.compare_mode
== PIPE_TEX_COMPARE_NONE
&&
3111 lp_is_simple_wrap_mode(derived_sampler_state
.wrap_s
);
3113 use_aos
&= bld
.num_lods
<= num_quads
||
3114 derived_sampler_state
.min_img_filter
==
3115 derived_sampler_state
.mag_img_filter
;
3117 if(gallivm_perf
& GALLIVM_PERF_NO_AOS_SAMPLING
) {
3122 use_aos
&= lp_is_simple_wrap_mode(derived_sampler_state
.wrap_t
);
3124 use_aos
&= lp_is_simple_wrap_mode(derived_sampler_state
.wrap_r
);
3127 if ((static_texture_state
->target
== PIPE_TEXTURE_CUBE
||
3128 static_texture_state
->target
== PIPE_TEXTURE_CUBE_ARRAY
) &&
3129 derived_sampler_state
.seamless_cube_map
&&
3130 (derived_sampler_state
.min_img_filter
== PIPE_TEX_FILTER_LINEAR
||
3131 derived_sampler_state
.mag_img_filter
== PIPE_TEX_FILTER_LINEAR
)) {
3132 /* theoretically possible with AoS filtering but not implemented (complex!) */
3136 if ((gallivm_debug
& GALLIVM_DEBUG_PERF
) &&
3137 !use_aos
&& util_format_fits_8unorm(bld
.format_desc
)) {
3138 debug_printf("%s: using floating point linear filtering for %s\n",
3139 __FUNCTION__
, bld
.format_desc
->short_name
);
3140 debug_printf(" min_img %d mag_img %d mip %d target %d seamless %d"
3141 " wraps %d wrapt %d wrapr %d\n",
3142 derived_sampler_state
.min_img_filter
,
3143 derived_sampler_state
.mag_img_filter
,
3144 derived_sampler_state
.min_mip_filter
,
3145 static_texture_state
->target
,
3146 derived_sampler_state
.seamless_cube_map
,
3147 derived_sampler_state
.wrap_s
,
3148 derived_sampler_state
.wrap_t
,
3149 derived_sampler_state
.wrap_r
);
3152 lp_build_sample_common(&bld
, op_is_lodq
, texture_index
, sampler_index
,
3154 derivs
, lod_bias
, explicit_lod
,
3155 &lod_positive
, &lod
, &lod_fpart
,
3156 &ilevel0
, &ilevel1
);
3159 texel_out
[0] = lod_fpart
;
3161 texel_out
[2] = texel_out
[3] = bld
.coord_bld
.zero
;
3165 if (use_aos
&& static_texture_state
->target
== PIPE_TEXTURE_CUBE_ARRAY
) {
3166 /* The aos path doesn't do seamless filtering so simply add cube layer
3169 newcoords
[2] = lp_build_add(&bld
.int_coord_bld
, newcoords
[2], newcoords
[3]);
3173 * we only try 8-wide sampling with soa or if we have AVX2
3174 * as it appears to be a loss with just AVX)
3176 if (num_quads
== 1 || !use_aos
||
3177 (util_cpu_caps
.has_avx2
&&
3178 (bld
.num_lods
== 1 ||
3179 derived_sampler_state
.min_img_filter
== derived_sampler_state
.mag_img_filter
))) {
3181 /* do sampling/filtering with fixed pt arithmetic */
3182 lp_build_sample_aos(&bld
, sampler_index
,
3183 newcoords
[0], newcoords
[1],
3185 offsets
, lod_positive
, lod_fpart
,
3191 lp_build_sample_general(&bld
, sampler_index
,
3192 op_type
== LP_SAMPLER_OP_GATHER
,
3194 lod_positive
, lod_fpart
,
3201 struct lp_build_sample_context bld4
;
3202 struct lp_type type4
= type
;
3204 LLVMValueRef texelout4
[4];
3205 LLVMValueRef texelouttmp
[4][LP_MAX_VECTOR_LENGTH
/16];
3209 /* Setup our build context */
3210 memset(&bld4
, 0, sizeof bld4
);
3211 bld4
.no_quad_lod
= bld
.no_quad_lod
;
3212 bld4
.no_rho_approx
= bld
.no_rho_approx
;
3213 bld4
.no_brilinear
= bld
.no_brilinear
;
3214 bld4
.gallivm
= bld
.gallivm
;
3215 bld4
.context_ptr
= bld
.context_ptr
;
3216 bld4
.static_texture_state
= bld
.static_texture_state
;
3217 bld4
.static_sampler_state
= bld
.static_sampler_state
;
3218 bld4
.dynamic_state
= bld
.dynamic_state
;
3219 bld4
.format_desc
= bld
.format_desc
;
3220 bld4
.dims
= bld
.dims
;
3221 bld4
.row_stride_array
= bld
.row_stride_array
;
3222 bld4
.img_stride_array
= bld
.img_stride_array
;
3223 bld4
.base_ptr
= bld
.base_ptr
;
3224 bld4
.mip_offsets
= bld
.mip_offsets
;
3225 bld4
.int_size
= bld
.int_size
;
3226 bld4
.cache
= bld
.cache
;
3228 bld4
.vector_width
= lp_type_width(type4
);
3230 bld4
.float_type
= lp_type_float(32);
3231 bld4
.int_type
= lp_type_int(32);
3232 bld4
.coord_type
= type4
;
3233 bld4
.int_coord_type
= lp_int_type(type4
);
3234 bld4
.float_size_in_type
= lp_type_float(32);
3235 bld4
.float_size_in_type
.length
= dims
> 1 ? 4 : 1;
3236 bld4
.int_size_in_type
= lp_int_type(bld4
.float_size_in_type
);
3237 bld4
.texel_type
= bld
.texel_type
;
3238 bld4
.texel_type
.length
= 4;
3240 bld4
.num_mips
= bld4
.num_lods
= 1;
3241 if (bld4
.no_quad_lod
&& bld4
.no_rho_approx
&&
3242 (static_texture_state
->target
== PIPE_TEXTURE_CUBE
||
3243 static_texture_state
->target
== PIPE_TEXTURE_CUBE_ARRAY
) &&
3244 (op_is_tex
&& mip_filter
!= PIPE_TEX_MIPFILTER_NONE
)) {
3245 bld4
.num_mips
= type4
.length
;
3246 bld4
.num_lods
= type4
.length
;
3248 if (lod_property
== LP_SAMPLER_LOD_PER_ELEMENT
&&
3249 (explicit_lod
|| lod_bias
|| derivs
)) {
3250 if ((!op_is_tex
&& target
!= PIPE_BUFFER
) ||
3251 (op_is_tex
&& mip_filter
!= PIPE_TEX_MIPFILTER_NONE
)) {
3252 bld4
.num_mips
= type4
.length
;
3253 bld4
.num_lods
= type4
.length
;
3255 else if (op_is_tex
&& min_img_filter
!= mag_img_filter
) {
3257 bld4
.num_lods
= type4
.length
;
3261 /* we want native vector size to be able to use our intrinsics */
3262 bld4
.lodf_type
= type4
;
3263 if (bld4
.num_lods
!= type4
.length
) {
3264 bld4
.lodf_type
.length
= 1;
3266 bld4
.lodi_type
= lp_int_type(bld4
.lodf_type
);
3267 bld4
.levelf_type
= type4
;
3268 if (bld4
.num_mips
!= type4
.length
) {
3269 bld4
.levelf_type
.length
= 1;
3271 bld4
.leveli_type
= lp_int_type(bld4
.levelf_type
);
3272 bld4
.float_size_type
= bld4
.float_size_in_type
;
3273 if (bld4
.num_mips
> 1) {
3274 bld4
.float_size_type
.length
= bld4
.num_mips
== type4
.length
?
3275 bld4
.num_mips
* bld4
.float_size_in_type
.length
:
3278 bld4
.int_size_type
= lp_int_type(bld4
.float_size_type
);
3280 lp_build_context_init(&bld4
.float_bld
, gallivm
, bld4
.float_type
);
3281 lp_build_context_init(&bld4
.float_vec_bld
, gallivm
, type4
);
3282 lp_build_context_init(&bld4
.int_bld
, gallivm
, bld4
.int_type
);
3283 lp_build_context_init(&bld4
.coord_bld
, gallivm
, bld4
.coord_type
);
3284 lp_build_context_init(&bld4
.int_coord_bld
, gallivm
, bld4
.int_coord_type
);
3285 lp_build_context_init(&bld4
.int_size_in_bld
, gallivm
, bld4
.int_size_in_type
);
3286 lp_build_context_init(&bld4
.float_size_in_bld
, gallivm
, bld4
.float_size_in_type
);
3287 lp_build_context_init(&bld4
.int_size_bld
, gallivm
, bld4
.int_size_type
);
3288 lp_build_context_init(&bld4
.float_size_bld
, gallivm
, bld4
.float_size_type
);
3289 lp_build_context_init(&bld4
.texel_bld
, gallivm
, bld4
.texel_type
);
3290 lp_build_context_init(&bld4
.levelf_bld
, gallivm
, bld4
.levelf_type
);
3291 lp_build_context_init(&bld4
.leveli_bld
, gallivm
, bld4
.leveli_type
);
3292 lp_build_context_init(&bld4
.lodf_bld
, gallivm
, bld4
.lodf_type
);
3293 lp_build_context_init(&bld4
.lodi_bld
, gallivm
, bld4
.lodi_type
);
3295 for (i
= 0; i
< num_quads
; i
++) {
3296 LLVMValueRef s4
, t4
, r4
;
3297 LLVMValueRef lod_positive4
, lod_fpart4
= NULL
;
3298 LLVMValueRef ilevel04
, ilevel14
= NULL
;
3299 LLVMValueRef offsets4
[4] = { NULL
};
3300 unsigned num_lods
= bld4
.num_lods
;
3302 s4
= lp_build_extract_range(gallivm
, newcoords
[0], 4*i
, 4);
3303 t4
= lp_build_extract_range(gallivm
, newcoords
[1], 4*i
, 4);
3304 r4
= lp_build_extract_range(gallivm
, newcoords
[2], 4*i
, 4);
3307 offsets4
[0] = lp_build_extract_range(gallivm
, offsets
[0], 4*i
, 4);
3309 offsets4
[1] = lp_build_extract_range(gallivm
, offsets
[1], 4*i
, 4);
3311 offsets4
[2] = lp_build_extract_range(gallivm
, offsets
[2], 4*i
, 4);
3315 lod_positive4
= lp_build_extract_range(gallivm
, lod_positive
, num_lods
* i
, num_lods
);
3316 ilevel04
= bld
.num_mips
== 1 ? ilevel0
:
3317 lp_build_extract_range(gallivm
, ilevel0
, num_lods
* i
, num_lods
);
3318 if (mip_filter
== PIPE_TEX_MIPFILTER_LINEAR
) {
3319 ilevel14
= lp_build_extract_range(gallivm
, ilevel1
, num_lods
* i
, num_lods
);
3320 lod_fpart4
= lp_build_extract_range(gallivm
, lod_fpart
, num_lods
* i
, num_lods
);
3324 /* do sampling/filtering with fixed pt arithmetic */
3325 lp_build_sample_aos(&bld4
, sampler_index
,
3326 s4
, t4
, r4
, offsets4
,
3327 lod_positive4
, lod_fpart4
,
3333 /* this path is currently unreachable and hence might break easily... */
3334 LLVMValueRef newcoords4
[5];
3338 newcoords4
[3] = lp_build_extract_range(gallivm
, newcoords
[3], 4*i
, 4);
3339 newcoords4
[4] = lp_build_extract_range(gallivm
, newcoords
[4], 4*i
, 4);
3341 lp_build_sample_general(&bld4
, sampler_index
,
3342 op_type
== LP_SAMPLER_OP_GATHER
,
3343 newcoords4
, offsets4
,
3344 lod_positive4
, lod_fpart4
,
3348 for (j
= 0; j
< 4; j
++) {
3349 texelouttmp
[j
][i
] = texelout4
[j
];
3353 for (j
= 0; j
< 4; j
++) {
3354 texel_out
[j
] = lp_build_concat(gallivm
, texelouttmp
[j
], type4
, num_quads
);
3359 if (target
!= PIPE_BUFFER
&& op_type
!= LP_SAMPLER_OP_GATHER
) {
3360 apply_sampler_swizzle(&bld
, texel_out
);
3364 * texel type can be a (32bit) int/uint (for pure int formats only),
3365 * however we are expected to always return floats (storage is untyped).
3367 if (!bld
.texel_type
.floating
) {
3369 for (chan
= 0; chan
< 4; chan
++) {
3370 texel_out
[chan
] = LLVMBuildBitCast(builder
, texel_out
[chan
],
3371 lp_build_vec_type(gallivm
, type
), "");
3377 #define USE_TEX_FUNC_CALL 1
3379 #define LP_MAX_TEX_FUNC_ARGS 32
3382 get_target_info(enum pipe_texture_target target
,
3383 unsigned *num_coords
, unsigned *num_derivs
,
3384 unsigned *num_offsets
, unsigned *layer
)
3386 unsigned dims
= texture_dims(target
);
3388 *num_offsets
= dims
;
3389 *num_derivs
= (target
== PIPE_TEXTURE_CUBE
||
3390 target
== PIPE_TEXTURE_CUBE_ARRAY
) ? 3 : dims
;
3391 *layer
= has_layer_coord(target
) ? 2: 0;
3392 if (target
== PIPE_TEXTURE_CUBE_ARRAY
) {
3394 * dims doesn't include r coord for cubes - this is handled
3395 * by layer instead, but need to fix up for cube arrays...
3404 * Generate the function body for a texture sampling function.
3407 lp_build_sample_gen_func(struct gallivm_state
*gallivm
,
3408 const struct lp_static_texture_state
*static_texture_state
,
3409 const struct lp_static_sampler_state
*static_sampler_state
,
3410 struct lp_sampler_dynamic_state
*dynamic_state
,
3411 struct lp_type type
,
3412 unsigned texture_index
,
3413 unsigned sampler_index
,
3414 LLVMValueRef function
,
3416 unsigned sample_key
)
3418 LLVMBuilderRef old_builder
;
3419 LLVMBasicBlockRef block
;
3420 LLVMValueRef coords
[5];
3421 LLVMValueRef offsets
[3] = { NULL
};
3422 LLVMValueRef lod
= NULL
;
3423 LLVMValueRef context_ptr
;
3424 LLVMValueRef thread_data_ptr
= NULL
;
3425 LLVMValueRef texel_out
[4];
3426 struct lp_derivatives derivs
;
3427 struct lp_derivatives
*deriv_ptr
= NULL
;
3428 unsigned num_param
= 0;
3429 unsigned i
, num_coords
, num_derivs
, num_offsets
, layer
;
3430 enum lp_sampler_lod_control lod_control
;
3431 boolean need_cache
= FALSE
;
3433 lod_control
= (sample_key
& LP_SAMPLER_LOD_CONTROL_MASK
) >>
3434 LP_SAMPLER_LOD_CONTROL_SHIFT
;
3436 get_target_info(static_texture_state
->target
,
3437 &num_coords
, &num_derivs
, &num_offsets
, &layer
);
3439 if (dynamic_state
->cache_ptr
) {
3440 const struct util_format_description
*format_desc
;
3441 format_desc
= util_format_description(static_texture_state
->format
);
3442 if (format_desc
&& format_desc
->layout
== UTIL_FORMAT_LAYOUT_S3TC
) {
3447 /* "unpack" arguments */
3448 context_ptr
= LLVMGetParam(function
, num_param
++);
3450 thread_data_ptr
= LLVMGetParam(function
, num_param
++);
3452 for (i
= 0; i
< num_coords
; i
++) {
3453 coords
[i
] = LLVMGetParam(function
, num_param
++);
3455 for (i
= num_coords
; i
< 5; i
++) {
3456 /* This is rather unfortunate... */
3457 coords
[i
] = lp_build_undef(gallivm
, type
);
3460 coords
[layer
] = LLVMGetParam(function
, num_param
++);
3462 if (sample_key
& LP_SAMPLER_SHADOW
) {
3463 coords
[4] = LLVMGetParam(function
, num_param
++);
3465 if (sample_key
& LP_SAMPLER_OFFSETS
) {
3466 for (i
= 0; i
< num_offsets
; i
++) {
3467 offsets
[i
] = LLVMGetParam(function
, num_param
++);
3470 if (lod_control
== LP_SAMPLER_LOD_BIAS
||
3471 lod_control
== LP_SAMPLER_LOD_EXPLICIT
) {
3472 lod
= LLVMGetParam(function
, num_param
++);
3474 else if (lod_control
== LP_SAMPLER_LOD_DERIVATIVES
) {
3475 for (i
= 0; i
< num_derivs
; i
++) {
3476 derivs
.ddx
[i
] = LLVMGetParam(function
, num_param
++);
3477 derivs
.ddy
[i
] = LLVMGetParam(function
, num_param
++);
3479 deriv_ptr
= &derivs
;
3482 assert(num_args
== num_param
);
3488 old_builder
= gallivm
->builder
;
3489 block
= LLVMAppendBasicBlockInContext(gallivm
->context
, function
, "entry");
3490 gallivm
->builder
= LLVMCreateBuilderInContext(gallivm
->context
);
3491 LLVMPositionBuilderAtEnd(gallivm
->builder
, block
);
3493 lp_build_sample_soa_code(gallivm
,
3494 static_texture_state
,
3495 static_sampler_state
,
3509 LLVMBuildAggregateRet(gallivm
->builder
, texel_out
, 4);
3511 LLVMDisposeBuilder(gallivm
->builder
);
3512 gallivm
->builder
= old_builder
;
3514 gallivm_verify_function(gallivm
, function
);
3519 * Call the matching function for texture sampling.
3520 * If there's no match, generate a new one.
3523 lp_build_sample_soa_func(struct gallivm_state
*gallivm
,
3524 const struct lp_static_texture_state
*static_texture_state
,
3525 const struct lp_static_sampler_state
*static_sampler_state
,
3526 struct lp_sampler_dynamic_state
*dynamic_state
,
3527 const struct lp_sampler_params
*params
)
3529 LLVMBuilderRef builder
= gallivm
->builder
;
3530 LLVMModuleRef module
= LLVMGetGlobalParent(LLVMGetBasicBlockParent(
3531 LLVMGetInsertBlock(builder
)));
3532 LLVMValueRef function
, inst
;
3533 LLVMValueRef args
[LP_MAX_TEX_FUNC_ARGS
];
3534 LLVMBasicBlockRef bb
;
3535 LLVMValueRef tex_ret
;
3536 unsigned num_args
= 0;
3538 unsigned i
, num_coords
, num_derivs
, num_offsets
, layer
;
3539 unsigned texture_index
= params
->texture_index
;
3540 unsigned sampler_index
= params
->sampler_index
;
3541 unsigned sample_key
= params
->sample_key
;
3542 const LLVMValueRef
*coords
= params
->coords
;
3543 const LLVMValueRef
*offsets
= params
->offsets
;
3544 const struct lp_derivatives
*derivs
= params
->derivs
;
3545 enum lp_sampler_lod_control lod_control
;
3546 boolean need_cache
= FALSE
;
3548 lod_control
= (sample_key
& LP_SAMPLER_LOD_CONTROL_MASK
) >>
3549 LP_SAMPLER_LOD_CONTROL_SHIFT
;
3551 get_target_info(static_texture_state
->target
,
3552 &num_coords
, &num_derivs
, &num_offsets
, &layer
);
3554 if (dynamic_state
->cache_ptr
) {
3555 const struct util_format_description
*format_desc
;
3556 format_desc
= util_format_description(static_texture_state
->format
);
3557 if (format_desc
&& format_desc
->layout
== UTIL_FORMAT_LAYOUT_S3TC
) {
3562 * texture function matches are found by name.
3563 * Thus the name has to include both the texture and sampler unit
3564 * (which covers all static state) plus the actual texture function
3565 * (including things like offsets, shadow coord, lod control).
3566 * Additionally lod_property has to be included too.
3569 snprintf(func_name
, sizeof(func_name
), "texfunc_res_%d_sam_%d_%x",
3570 texture_index
, sampler_index
, sample_key
);
3572 function
= LLVMGetNamedFunction(module
, func_name
);
3575 LLVMTypeRef arg_types
[LP_MAX_TEX_FUNC_ARGS
];
3576 LLVMTypeRef ret_type
;
3577 LLVMTypeRef function_type
;
3578 LLVMTypeRef val_type
[4];
3579 unsigned num_param
= 0;
3582 * Generate the function prototype.
3585 arg_types
[num_param
++] = LLVMTypeOf(params
->context_ptr
);
3587 arg_types
[num_param
++] = LLVMTypeOf(params
->thread_data_ptr
);
3589 for (i
= 0; i
< num_coords
; i
++) {
3590 arg_types
[num_param
++] = LLVMTypeOf(coords
[0]);
3591 assert(LLVMTypeOf(coords
[0]) == LLVMTypeOf(coords
[i
]));
3594 arg_types
[num_param
++] = LLVMTypeOf(coords
[layer
]);
3595 assert(LLVMTypeOf(coords
[0]) == LLVMTypeOf(coords
[layer
]));
3597 if (sample_key
& LP_SAMPLER_SHADOW
) {
3598 arg_types
[num_param
++] = LLVMTypeOf(coords
[0]);
3600 if (sample_key
& LP_SAMPLER_OFFSETS
) {
3601 for (i
= 0; i
< num_offsets
; i
++) {
3602 arg_types
[num_param
++] = LLVMTypeOf(offsets
[0]);
3603 assert(LLVMTypeOf(offsets
[0]) == LLVMTypeOf(offsets
[i
]));
3606 if (lod_control
== LP_SAMPLER_LOD_BIAS
||
3607 lod_control
== LP_SAMPLER_LOD_EXPLICIT
) {
3608 arg_types
[num_param
++] = LLVMTypeOf(params
->lod
);
3610 else if (lod_control
== LP_SAMPLER_LOD_DERIVATIVES
) {
3611 for (i
= 0; i
< num_derivs
; i
++) {
3612 arg_types
[num_param
++] = LLVMTypeOf(derivs
->ddx
[i
]);
3613 arg_types
[num_param
++] = LLVMTypeOf(derivs
->ddy
[i
]);
3614 assert(LLVMTypeOf(derivs
->ddx
[0]) == LLVMTypeOf(derivs
->ddx
[i
]));
3615 assert(LLVMTypeOf(derivs
->ddy
[0]) == LLVMTypeOf(derivs
->ddy
[i
]));
3619 val_type
[0] = val_type
[1] = val_type
[2] = val_type
[3] =
3620 lp_build_vec_type(gallivm
, params
->type
);
3621 ret_type
= LLVMStructTypeInContext(gallivm
->context
, val_type
, 4, 0);
3622 function_type
= LLVMFunctionType(ret_type
, arg_types
, num_param
, 0);
3623 function
= LLVMAddFunction(module
, func_name
, function_type
);
3625 for (i
= 0; i
< num_param
; ++i
) {
3626 if(LLVMGetTypeKind(arg_types
[i
]) == LLVMPointerTypeKind
) {
3628 lp_add_function_attr(function
, i
+ 1, LP_FUNC_ATTR_NOALIAS
);
3632 LLVMSetFunctionCallConv(function
, LLVMFastCallConv
);
3633 LLVMSetLinkage(function
, LLVMInternalLinkage
);
3635 lp_build_sample_gen_func(gallivm
,
3636 static_texture_state
,
3637 static_sampler_state
,
3648 args
[num_args
++] = params
->context_ptr
;
3650 args
[num_args
++] = params
->thread_data_ptr
;
3652 for (i
= 0; i
< num_coords
; i
++) {
3653 args
[num_args
++] = coords
[i
];
3656 args
[num_args
++] = coords
[layer
];
3658 if (sample_key
& LP_SAMPLER_SHADOW
) {
3659 args
[num_args
++] = coords
[4];
3661 if (sample_key
& LP_SAMPLER_OFFSETS
) {
3662 for (i
= 0; i
< num_offsets
; i
++) {
3663 args
[num_args
++] = offsets
[i
];
3666 if (lod_control
== LP_SAMPLER_LOD_BIAS
||
3667 lod_control
== LP_SAMPLER_LOD_EXPLICIT
) {
3668 args
[num_args
++] = params
->lod
;
3670 else if (lod_control
== LP_SAMPLER_LOD_DERIVATIVES
) {
3671 for (i
= 0; i
< num_derivs
; i
++) {
3672 args
[num_args
++] = derivs
->ddx
[i
];
3673 args
[num_args
++] = derivs
->ddy
[i
];
3677 assert(num_args
<= LP_MAX_TEX_FUNC_ARGS
);
3679 tex_ret
= LLVMBuildCall(builder
, function
, args
, num_args
, "");
3680 bb
= LLVMGetInsertBlock(builder
);
3681 inst
= LLVMGetLastInstruction(bb
);
3682 LLVMSetInstructionCallConv(inst
, LLVMFastCallConv
);
3684 for (i
= 0; i
< 4; i
++) {
3685 params
->texel
[i
] = LLVMBuildExtractValue(gallivm
->builder
, tex_ret
, i
, "");
3691 * Build texture sampling code.
3692 * Either via a function call or inline it directly.
3695 lp_build_sample_soa(const struct lp_static_texture_state
*static_texture_state
,
3696 const struct lp_static_sampler_state
*static_sampler_state
,
3697 struct lp_sampler_dynamic_state
*dynamic_state
,
3698 struct gallivm_state
*gallivm
,
3699 const struct lp_sampler_params
*params
)
3701 boolean use_tex_func
= FALSE
;
3704 * Do not use a function call if the sampling is "simple enough".
3707 * b) no mips (either one level only or no mip filter)
3708 * No mips will definitely make the code smaller, though
3709 * the format requirement is a bit iffy - there's some (SoA) formats
3710 * which definitely generate less code. This does happen to catch
3711 * some important cases though which are hurt quite a bit by using
3712 * a call (though not really because of the call overhead but because
3713 * they are reusing the same texture unit with some of the same
3715 * Ideally we'd let llvm recognize this stuff by doing IPO passes.
3718 if (USE_TEX_FUNC_CALL
) {
3719 const struct util_format_description
*format_desc
;
3720 boolean simple_format
;
3722 enum lp_sampler_op_type op_type
;
3723 format_desc
= util_format_description(static_texture_state
->format
);
3724 simple_format
= !format_desc
||
3725 (util_format_is_rgba8_variant(format_desc
) &&
3726 format_desc
->colorspace
== UTIL_FORMAT_COLORSPACE_RGB
);
3728 op_type
= (params
->sample_key
& LP_SAMPLER_OP_TYPE_MASK
) >>
3729 LP_SAMPLER_OP_TYPE_SHIFT
;
3731 op_type
!= LP_SAMPLER_OP_TEXTURE
||
3732 ((static_sampler_state
->min_mip_filter
== PIPE_TEX_MIPFILTER_NONE
||
3733 static_texture_state
->level_zero_only
== TRUE
) &&
3734 static_sampler_state
->min_img_filter
== static_sampler_state
->mag_img_filter
);
3736 use_tex_func
= format_desc
&& !(simple_format
&& simple_tex
);
3740 lp_build_sample_soa_func(gallivm
,
3741 static_texture_state
,
3742 static_sampler_state
,
3747 lp_build_sample_soa_code(gallivm
,
3748 static_texture_state
,
3749 static_sampler_state
,
3753 params
->texture_index
,
3754 params
->sampler_index
,
3755 params
->context_ptr
,
3756 params
->thread_data_ptr
,
3767 lp_build_size_query_soa(struct gallivm_state
*gallivm
,
3768 const struct lp_static_texture_state
*static_state
,
3769 struct lp_sampler_dynamic_state
*dynamic_state
,
3770 const struct lp_sampler_size_query_params
*params
)
3772 LLVMValueRef lod
, level
= 0, size
;
3773 LLVMValueRef first_level
= NULL
;
3776 unsigned num_lods
= 1;
3777 struct lp_build_context bld_int_vec4
;
3778 LLVMValueRef context_ptr
= params
->context_ptr
;
3779 unsigned texture_unit
= params
->texture_unit
;
3780 unsigned target
= params
->target
;
3782 if (static_state
->format
== PIPE_FORMAT_NONE
) {
3784 * If there's nothing bound, format is NONE, and we must return
3785 * all zero as mandated by d3d10 in this case.
3788 LLVMValueRef zero
= lp_build_const_vec(gallivm
, params
->int_type
, 0.0F
);
3789 for (chan
= 0; chan
< 4; chan
++) {
3790 params
->sizes_out
[chan
] = zero
;
3796 * Do some sanity verification about bound texture and shader dcl target.
3797 * Not entirely sure what's possible but assume array/non-array
3798 * always compatible (probably not ok for OpenGL but d3d10 has no
3799 * distinction of arrays at the resource level).
3800 * Everything else looks bogus (though not entirely sure about rect/2d).
3801 * Currently disabled because it causes assertion failures if there's
3802 * nothing bound (or rather a dummy texture, not that this case would
3803 * return the right values).
3805 if (0 && static_state
->target
!= target
) {
3806 if (static_state
->target
== PIPE_TEXTURE_1D
)
3807 assert(target
== PIPE_TEXTURE_1D_ARRAY
);
3808 else if (static_state
->target
== PIPE_TEXTURE_1D_ARRAY
)
3809 assert(target
== PIPE_TEXTURE_1D
);
3810 else if (static_state
->target
== PIPE_TEXTURE_2D
)
3811 assert(target
== PIPE_TEXTURE_2D_ARRAY
);
3812 else if (static_state
->target
== PIPE_TEXTURE_2D_ARRAY
)
3813 assert(target
== PIPE_TEXTURE_2D
);
3814 else if (static_state
->target
== PIPE_TEXTURE_CUBE
)
3815 assert(target
== PIPE_TEXTURE_CUBE_ARRAY
);
3816 else if (static_state
->target
== PIPE_TEXTURE_CUBE_ARRAY
)
3817 assert(target
== PIPE_TEXTURE_CUBE
);
3822 dims
= texture_dims(target
);
3825 case PIPE_TEXTURE_1D_ARRAY
:
3826 case PIPE_TEXTURE_2D_ARRAY
:
3827 case PIPE_TEXTURE_CUBE_ARRAY
:
3835 assert(!params
->int_type
.floating
);
3837 lp_build_context_init(&bld_int_vec4
, gallivm
, lp_type_int_vec(32, 128));
3839 if (params
->explicit_lod
) {
3840 /* FIXME: this needs to honor per-element lod */
3841 lod
= LLVMBuildExtractElement(gallivm
->builder
, params
->explicit_lod
,
3842 lp_build_const_int32(gallivm
, 0), "");
3843 first_level
= dynamic_state
->first_level(dynamic_state
, gallivm
,
3844 context_ptr
, texture_unit
);
3845 level
= LLVMBuildAdd(gallivm
->builder
, lod
, first_level
, "level");
3846 lod
= lp_build_broadcast_scalar(&bld_int_vec4
, level
);
3848 lod
= bld_int_vec4
.zero
;
3851 size
= bld_int_vec4
.undef
;
3853 size
= LLVMBuildInsertElement(gallivm
->builder
, size
,
3854 dynamic_state
->width(dynamic_state
, gallivm
,
3855 context_ptr
, texture_unit
),
3856 lp_build_const_int32(gallivm
, 0), "");
3859 size
= LLVMBuildInsertElement(gallivm
->builder
, size
,
3860 dynamic_state
->height(dynamic_state
, gallivm
,
3861 context_ptr
, texture_unit
),
3862 lp_build_const_int32(gallivm
, 1), "");
3866 size
= LLVMBuildInsertElement(gallivm
->builder
, size
,
3867 dynamic_state
->depth(dynamic_state
, gallivm
,
3868 context_ptr
, texture_unit
),
3869 lp_build_const_int32(gallivm
, 2), "");
3872 size
= lp_build_minify(&bld_int_vec4
, size
, lod
, TRUE
);
3875 LLVMValueRef layers
= dynamic_state
->depth(dynamic_state
, gallivm
,
3876 context_ptr
, texture_unit
);
3877 if (target
== PIPE_TEXTURE_CUBE_ARRAY
) {
3879 * It looks like GL wants number of cubes, d3d10.1 has it undefined?
3880 * Could avoid this by passing in number of cubes instead of total
3881 * number of layers (might make things easier elsewhere too).
3883 LLVMValueRef six
= lp_build_const_int32(gallivm
, 6);
3884 layers
= LLVMBuildSDiv(gallivm
->builder
, layers
, six
, "");
3886 size
= LLVMBuildInsertElement(gallivm
->builder
, size
, layers
,
3887 lp_build_const_int32(gallivm
, dims
), "");
3891 * d3d10 requires zero for x/y/z values (but not w, i.e. mip levels)
3892 * if level is out of bounds (note this can't cover unbound texture
3893 * here, which also requires returning zero).
3895 if (params
->explicit_lod
&& params
->is_sviewinfo
) {
3896 LLVMValueRef last_level
, out
, out1
;
3897 struct lp_build_context leveli_bld
;
3899 /* everything is scalar for now */
3900 lp_build_context_init(&leveli_bld
, gallivm
, lp_type_int_vec(32, 32));
3901 last_level
= dynamic_state
->last_level(dynamic_state
, gallivm
,
3902 context_ptr
, texture_unit
);
3904 out
= lp_build_cmp(&leveli_bld
, PIPE_FUNC_LESS
, level
, first_level
);
3905 out1
= lp_build_cmp(&leveli_bld
, PIPE_FUNC_GREATER
, level
, last_level
);
3906 out
= lp_build_or(&leveli_bld
, out
, out1
);
3907 if (num_lods
== 1) {
3908 out
= lp_build_broadcast_scalar(&bld_int_vec4
, out
);
3914 size
= lp_build_andnot(&bld_int_vec4
, size
, out
);
3916 for (i
= 0; i
< dims
+ (has_array
? 1 : 0); i
++) {
3917 params
->sizes_out
[i
] = lp_build_extract_broadcast(gallivm
, bld_int_vec4
.type
, params
->int_type
,
3919 lp_build_const_int32(gallivm
, i
));
3921 if (params
->is_sviewinfo
) {
3922 for (; i
< 4; i
++) {
3923 params
->sizes_out
[i
] = lp_build_const_vec(gallivm
, params
->int_type
, 0.0);
3928 * if there's no explicit_lod (buffers, rects) queries requiring nr of
3929 * mips would be illegal.
3931 if (params
->is_sviewinfo
&& params
->explicit_lod
) {
3932 struct lp_build_context bld_int_scalar
;
3933 LLVMValueRef num_levels
;
3934 lp_build_context_init(&bld_int_scalar
, gallivm
, lp_type_int(32));
3936 if (static_state
->level_zero_only
) {
3937 num_levels
= bld_int_scalar
.one
;
3940 LLVMValueRef last_level
;
3942 last_level
= dynamic_state
->last_level(dynamic_state
, gallivm
,
3943 context_ptr
, texture_unit
);
3944 num_levels
= lp_build_sub(&bld_int_scalar
, last_level
, first_level
);
3945 num_levels
= lp_build_add(&bld_int_scalar
, num_levels
, bld_int_scalar
.one
);
3947 params
->sizes_out
[3] = lp_build_broadcast(gallivm
, lp_build_vec_type(gallivm
, params
->int_type
),
3953 lp_build_do_atomic_soa(struct gallivm_state
*gallivm
,
3954 const struct util_format_description
*format_desc
,
3955 struct lp_type type
,
3956 LLVMValueRef exec_mask
,
3957 LLVMValueRef base_ptr
,
3958 LLVMValueRef offset
,
3959 LLVMValueRef out_of_bounds
,
3961 LLVMAtomicRMWBinOp op
,
3962 const LLVMValueRef rgba_in
[4],
3963 const LLVMValueRef rgba2_in
[4],
3964 LLVMValueRef atomic_result
[4])
3966 enum pipe_format format
= format_desc
->format
;
3968 if (format
!= PIPE_FORMAT_R32_UINT
&& format
!= PIPE_FORMAT_R32_SINT
&& format
!= PIPE_FORMAT_R32_FLOAT
)
3971 LLVMValueRef atom_res
= lp_build_alloca(gallivm
,
3972 LLVMVectorType(LLVMInt32TypeInContext(gallivm
->context
), type
.length
), "");
3974 offset
= LLVMBuildGEP(gallivm
->builder
, base_ptr
, &offset
, 1, "");
3975 struct lp_build_loop_state loop_state
;
3976 lp_build_loop_begin(&loop_state
, gallivm
, lp_build_const_int32(gallivm
, 0));
3977 struct lp_build_if_state ifthen
;
3979 LLVMValueRef packed
= rgba_in
[0], packed2
= rgba2_in
[0];
3981 LLVMValueRef should_store_mask
= LLVMBuildAnd(gallivm
->builder
, exec_mask
, LLVMBuildNot(gallivm
->builder
, out_of_bounds
, ""), "store_mask");
3984 cond
= LLVMBuildICmp(gallivm
->builder
, LLVMIntNE
, should_store_mask
, lp_build_const_int_vec(gallivm
, type
, 0), "");
3985 cond
= LLVMBuildExtractElement(gallivm
->builder
, cond
, loop_state
.counter
, "");
3986 lp_build_if(&ifthen
, gallivm
, cond
);
3988 LLVMValueRef data
= LLVMBuildExtractElement(gallivm
->builder
, packed
, loop_state
.counter
, "");
3989 LLVMValueRef cast_base_ptr
= LLVMBuildExtractElement(gallivm
->builder
, offset
, loop_state
.counter
, "");
3990 cast_base_ptr
= LLVMBuildBitCast(gallivm
->builder
, cast_base_ptr
, LLVMPointerType(LLVMInt32TypeInContext(gallivm
->context
), 0), "");
3991 data
= LLVMBuildBitCast(gallivm
->builder
, data
, LLVMInt32TypeInContext(gallivm
->context
), "");
3993 if (img_op
== LP_IMG_ATOMIC_CAS
) {
3994 LLVMValueRef cas_src_ptr
= LLVMBuildExtractElement(gallivm
->builder
, packed2
, loop_state
.counter
, "");
3995 LLVMValueRef cas_src
= LLVMBuildBitCast(gallivm
->builder
, cas_src_ptr
, LLVMInt32TypeInContext(gallivm
->context
), "");
3996 data
= LLVMBuildAtomicCmpXchg(gallivm
->builder
, cast_base_ptr
, data
,
3998 LLVMAtomicOrderingSequentiallyConsistent
,
3999 LLVMAtomicOrderingSequentiallyConsistent
,
4001 data
= LLVMBuildExtractValue(gallivm
->builder
, data
, 0, "");
4003 data
= LLVMBuildAtomicRMW(gallivm
->builder
, op
,
4004 cast_base_ptr
, data
,
4005 LLVMAtomicOrderingSequentiallyConsistent
,
4009 LLVMValueRef temp_res
= LLVMBuildLoad(gallivm
->builder
, atom_res
, "");
4010 temp_res
= LLVMBuildInsertElement(gallivm
->builder
, temp_res
, data
, loop_state
.counter
, "");
4011 LLVMBuildStore(gallivm
->builder
, temp_res
, atom_res
);
4013 lp_build_endif(&ifthen
);
4014 lp_build_loop_end_cond(&loop_state
, lp_build_const_int32(gallivm
, type
.length
),
4016 atomic_result
[0] = LLVMBuildLoad(gallivm
->builder
, atom_res
, "");
4020 lp_build_img_op_soa(const struct lp_static_texture_state
*static_texture_state
,
4021 struct lp_sampler_dynamic_state
*dynamic_state
,
4022 struct gallivm_state
*gallivm
,
4023 const struct lp_img_params
*params
)
4025 unsigned target
= params
->target
;
4026 unsigned dims
= texture_dims(target
);
4027 /** regular scalar int type */
4028 struct lp_type int_type
, int_coord_type
;
4029 struct lp_build_context int_bld
, int_coord_bld
;
4030 const struct util_format_description
*format_desc
= util_format_description(static_texture_state
->format
);
4031 LLVMValueRef x
= params
->coords
[0], y
= params
->coords
[1], z
= params
->coords
[2];
4032 LLVMValueRef row_stride_vec
= NULL
, img_stride_vec
= NULL
;
4033 int_type
= lp_type_int(32);
4034 int_coord_type
= lp_int_type(params
->type
);
4035 lp_build_context_init(&int_bld
, gallivm
, int_type
);
4036 lp_build_context_init(&int_coord_bld
, gallivm
, int_coord_type
);
4038 LLVMValueRef offset
, i
, j
;
4040 LLVMValueRef row_stride
= dynamic_state
->row_stride(dynamic_state
, gallivm
,
4041 params
->context_ptr
, params
->image_index
);
4042 LLVMValueRef img_stride
= dynamic_state
->img_stride(dynamic_state
, gallivm
,
4043 params
->context_ptr
, params
->image_index
);
4044 LLVMValueRef base_ptr
= dynamic_state
->base_ptr(dynamic_state
, gallivm
,
4045 params
->context_ptr
, params
->image_index
);
4046 LLVMValueRef width
= dynamic_state
->width(dynamic_state
, gallivm
,
4047 params
->context_ptr
, params
->image_index
);
4048 LLVMValueRef height
= dynamic_state
->height(dynamic_state
, gallivm
,
4049 params
->context_ptr
, params
->image_index
);
4050 LLVMValueRef depth
= dynamic_state
->depth(dynamic_state
, gallivm
,
4051 params
->context_ptr
, params
->image_index
);
4052 boolean layer_coord
= has_layer_coord(target
);
4054 width
= lp_build_broadcast_scalar(&int_coord_bld
, width
);
4056 height
= lp_build_broadcast_scalar(&int_coord_bld
, height
);
4057 row_stride_vec
= lp_build_broadcast_scalar(&int_coord_bld
, row_stride
);
4059 if (dims
>= 3 || layer_coord
) {
4060 depth
= lp_build_broadcast_scalar(&int_coord_bld
, depth
);
4061 img_stride_vec
= lp_build_broadcast_scalar(&int_coord_bld
, img_stride
);
4064 LLVMValueRef out_of_bounds
= int_coord_bld
.zero
;
4066 out1
= lp_build_cmp(&int_coord_bld
, PIPE_FUNC_GEQUAL
, x
, width
);
4067 out_of_bounds
= lp_build_or(&int_coord_bld
, out_of_bounds
, out1
);
4070 out1
= lp_build_cmp(&int_coord_bld
, PIPE_FUNC_GEQUAL
, y
, height
);
4071 out_of_bounds
= lp_build_or(&int_coord_bld
, out_of_bounds
, out1
);
4074 out1
= lp_build_cmp(&int_coord_bld
, PIPE_FUNC_GEQUAL
, z
, depth
);
4075 out_of_bounds
= lp_build_or(&int_coord_bld
, out_of_bounds
, out1
);
4077 lp_build_sample_offset(&int_coord_bld
,
4079 x
, y
, z
, row_stride_vec
, img_stride_vec
,
4082 if (params
->img_op
== LP_IMG_LOAD
) {
4083 struct lp_type texel_type
= params
->type
;
4084 if (format_desc
->colorspace
== UTIL_FORMAT_COLORSPACE_RGB
&&
4085 format_desc
->channel
[0].pure_integer
) {
4086 if (format_desc
->channel
[0].type
== UTIL_FORMAT_TYPE_SIGNED
) {
4087 texel_type
= lp_type_int_vec(params
->type
.width
, params
->type
.width
* params
->type
.length
);
4088 } else if (format_desc
->channel
[0].type
== UTIL_FORMAT_TYPE_UNSIGNED
) {
4089 texel_type
= lp_type_uint_vec(params
->type
.width
, params
->type
.width
* params
->type
.length
);
4093 if (static_texture_state
->format
== PIPE_FORMAT_NONE
) {
4095 * If there's nothing bound, format is NONE, and we must return
4096 * all zero as mandated by d3d10 in this case.
4099 LLVMValueRef zero
= lp_build_zero(gallivm
, params
->type
);
4100 for (chan
= 0; chan
< 4; chan
++) {
4101 params
->outdata
[chan
] = zero
;
4106 offset
= lp_build_andnot(&int_coord_bld
, offset
, out_of_bounds
);
4107 struct lp_build_context texel_bld
;
4108 lp_build_context_init(&texel_bld
, gallivm
, texel_type
);
4109 lp_build_fetch_rgba_soa(gallivm
,
4117 for (unsigned chan
= 0; chan
< 4; chan
++) {
4118 params
->outdata
[chan
] = lp_build_select(&texel_bld
, out_of_bounds
,
4119 texel_bld
.zero
, params
->outdata
[chan
]);
4121 } else if (params
->img_op
== LP_IMG_STORE
) {
4122 if (static_texture_state
->format
== PIPE_FORMAT_NONE
)
4124 lp_build_store_rgba_soa(gallivm
, format_desc
, params
->type
, params
->exec_mask
, base_ptr
, offset
, out_of_bounds
,
4127 if (static_texture_state
->format
== PIPE_FORMAT_NONE
)
4129 lp_build_do_atomic_soa(gallivm
, format_desc
, params
->type
, params
->exec_mask
, base_ptr
, offset
, out_of_bounds
,
4130 params
->img_op
, params
->op
, params
->indata
, params
->indata2
, params
->outdata
);