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/u_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"
66 * Generate code to fetch a texel from a texture at int coords (x, y, z).
67 * The computation depends on whether the texture is 1D, 2D or 3D.
68 * The result, texel, will be float vectors:
69 * texel[0] = red values
70 * texel[1] = green values
71 * texel[2] = blue values
72 * texel[3] = alpha values
75 lp_build_sample_texel_soa(struct lp_build_sample_context
*bld
,
82 LLVMValueRef y_stride
,
83 LLVMValueRef z_stride
,
84 LLVMValueRef data_ptr
,
85 LLVMValueRef mipoffsets
,
86 LLVMValueRef texel_out
[4])
88 const struct lp_static_sampler_state
*static_state
= bld
->static_sampler_state
;
89 const unsigned dims
= bld
->dims
;
90 struct lp_build_context
*int_coord_bld
= &bld
->int_coord_bld
;
91 LLVMBuilderRef builder
= bld
->gallivm
->builder
;
94 LLVMValueRef use_border
= NULL
;
96 /* use_border = x < 0 || x >= width || y < 0 || y >= height */
97 if (lp_sampler_wrap_mode_uses_border_color(static_state
->wrap_s
,
98 static_state
->min_img_filter
,
99 static_state
->mag_img_filter
)) {
101 b1
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_LESS
, x
, int_coord_bld
->zero
);
102 b2
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_GEQUAL
, x
, width
);
103 use_border
= LLVMBuildOr(builder
, b1
, b2
, "b1_or_b2");
107 lp_sampler_wrap_mode_uses_border_color(static_state
->wrap_t
,
108 static_state
->min_img_filter
,
109 static_state
->mag_img_filter
)) {
111 b1
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_LESS
, y
, int_coord_bld
->zero
);
112 b2
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_GEQUAL
, y
, height
);
114 use_border
= LLVMBuildOr(builder
, use_border
, b1
, "ub_or_b1");
115 use_border
= LLVMBuildOr(builder
, use_border
, b2
, "ub_or_b2");
118 use_border
= LLVMBuildOr(builder
, b1
, b2
, "b1_or_b2");
123 lp_sampler_wrap_mode_uses_border_color(static_state
->wrap_r
,
124 static_state
->min_img_filter
,
125 static_state
->mag_img_filter
)) {
127 b1
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_LESS
, z
, int_coord_bld
->zero
);
128 b2
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_GEQUAL
, z
, depth
);
130 use_border
= LLVMBuildOr(builder
, use_border
, b1
, "ub_or_b1");
131 use_border
= LLVMBuildOr(builder
, use_border
, b2
, "ub_or_b2");
134 use_border
= LLVMBuildOr(builder
, b1
, b2
, "b1_or_b2");
138 /* convert x,y,z coords to linear offset from start of texture, in bytes */
139 lp_build_sample_offset(&bld
->int_coord_bld
,
141 x
, y
, z
, y_stride
, z_stride
,
144 offset
= lp_build_add(&bld
->int_coord_bld
, offset
, mipoffsets
);
148 /* If we can sample the border color, it means that texcoords may
149 * lie outside the bounds of the texture image. We need to do
150 * something to prevent reading out of bounds and causing a segfault.
152 * Simply AND the texture coords with !use_border. This will cause
153 * coords which are out of bounds to become zero. Zero's guaranteed
154 * to be inside the texture image.
156 offset
= lp_build_andnot(&bld
->int_coord_bld
, offset
, use_border
);
159 lp_build_fetch_rgba_soa(bld
->gallivm
,
167 * Note: if we find an app which frequently samples the texture border
168 * we might want to implement a true conditional here to avoid sampling
169 * the texture whenever possible (since that's quite a bit of code).
172 * texel = border_color;
175 * texel = sample_texture(coord);
177 * As it is now, we always sample the texture, then selectively replace
178 * the texel color results with the border color.
182 /* select texel color or border color depending on use_border. */
183 const struct util_format_description
*format_desc
= bld
->format_desc
;
185 struct lp_type border_type
= bld
->texel_type
;
186 border_type
.length
= 4;
188 * Only replace channels which are actually present. The others should
189 * get optimized away eventually by sampler_view swizzle anyway but it's
192 for (chan
= 0; chan
< 4; chan
++) {
194 /* reverse-map channel... */
195 for (chan_s
= 0; chan_s
< 4; chan_s
++) {
196 if (chan_s
== format_desc
->swizzle
[chan
]) {
201 /* use the already clamped color */
202 LLVMValueRef idx
= lp_build_const_int32(bld
->gallivm
, chan
);
203 LLVMValueRef border_chan
;
205 border_chan
= lp_build_extract_broadcast(bld
->gallivm
,
208 bld
->border_color_clamped
,
210 texel_out
[chan
] = lp_build_select(&bld
->texel_bld
, use_border
,
211 border_chan
, texel_out
[chan
]);
219 * Helper to compute the mirror function for the PIPE_WRAP_MIRROR modes.
222 lp_build_coord_mirror(struct lp_build_sample_context
*bld
,
225 struct lp_build_context
*coord_bld
= &bld
->coord_bld
;
226 struct lp_build_context
*int_coord_bld
= &bld
->int_coord_bld
;
227 LLVMValueRef fract
, flr
, isOdd
;
229 lp_build_ifloor_fract(coord_bld
, coord
, &flr
, &fract
);
231 /* isOdd = flr & 1 */
232 isOdd
= LLVMBuildAnd(bld
->gallivm
->builder
, flr
, int_coord_bld
->one
, "");
234 /* make coord positive or negative depending on isOdd */
235 coord
= lp_build_set_sign(coord_bld
, fract
, isOdd
);
237 /* convert isOdd to float */
238 isOdd
= lp_build_int_to_float(coord_bld
, isOdd
);
240 /* add isOdd to coord */
241 coord
= lp_build_add(coord_bld
, coord
, isOdd
);
248 * Helper to compute the first coord and the weight for
249 * linear wrap repeat npot textures
252 lp_build_coord_repeat_npot_linear(struct lp_build_sample_context
*bld
,
253 LLVMValueRef coord_f
,
254 LLVMValueRef length_i
,
255 LLVMValueRef length_f
,
256 LLVMValueRef
*coord0_i
,
257 LLVMValueRef
*weight_f
)
259 struct lp_build_context
*coord_bld
= &bld
->coord_bld
;
260 struct lp_build_context
*int_coord_bld
= &bld
->int_coord_bld
;
261 LLVMValueRef half
= lp_build_const_vec(bld
->gallivm
, coord_bld
->type
, 0.5);
262 LLVMValueRef length_minus_one
= lp_build_sub(int_coord_bld
, length_i
,
265 /* wrap with normalized floats is just fract */
266 coord_f
= lp_build_fract(coord_bld
, coord_f
);
267 /* mul by size and subtract 0.5 */
268 coord_f
= lp_build_mul(coord_bld
, coord_f
, length_f
);
269 coord_f
= lp_build_sub(coord_bld
, coord_f
, half
);
271 * we avoided the 0.5/length division before the repeat wrap,
272 * now need to fix up edge cases with selects
274 /* convert to int, compute lerp weight */
275 lp_build_ifloor_fract(coord_bld
, coord_f
, coord0_i
, weight_f
);
276 mask
= lp_build_compare(int_coord_bld
->gallivm
, int_coord_bld
->type
,
277 PIPE_FUNC_LESS
, *coord0_i
, int_coord_bld
->zero
);
278 *coord0_i
= lp_build_select(int_coord_bld
, mask
, length_minus_one
, *coord0_i
);
283 * Build LLVM code for texture wrap mode for linear filtering.
284 * \param x0_out returns first integer texcoord
285 * \param x1_out returns second integer texcoord
286 * \param weight_out returns linear interpolation weight
289 lp_build_sample_wrap_linear(struct lp_build_sample_context
*bld
,
292 LLVMValueRef length_f
,
296 LLVMValueRef
*x0_out
,
297 LLVMValueRef
*x1_out
,
298 LLVMValueRef
*weight_out
)
300 struct lp_build_context
*coord_bld
= &bld
->coord_bld
;
301 struct lp_build_context
*int_coord_bld
= &bld
->int_coord_bld
;
302 LLVMBuilderRef builder
= bld
->gallivm
->builder
;
303 LLVMValueRef half
= lp_build_const_vec(bld
->gallivm
, coord_bld
->type
, 0.5);
304 LLVMValueRef length_minus_one
= lp_build_sub(int_coord_bld
, length
, int_coord_bld
->one
);
305 LLVMValueRef coord0
, coord1
, weight
;
308 case PIPE_TEX_WRAP_REPEAT
:
310 /* mul by size and subtract 0.5 */
311 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
312 coord
= lp_build_sub(coord_bld
, coord
, half
);
314 offset
= lp_build_int_to_float(coord_bld
, offset
);
315 coord
= lp_build_add(coord_bld
, coord
, offset
);
317 /* convert to int, compute lerp weight */
318 lp_build_ifloor_fract(coord_bld
, coord
, &coord0
, &weight
);
319 coord1
= lp_build_add(int_coord_bld
, coord0
, int_coord_bld
->one
);
321 coord0
= LLVMBuildAnd(builder
, coord0
, length_minus_one
, "");
322 coord1
= LLVMBuildAnd(builder
, coord1
, length_minus_one
, "");
327 offset
= lp_build_int_to_float(coord_bld
, offset
);
328 offset
= lp_build_div(coord_bld
, offset
, length_f
);
329 coord
= lp_build_add(coord_bld
, coord
, offset
);
331 lp_build_coord_repeat_npot_linear(bld
, coord
,
334 mask
= lp_build_compare(int_coord_bld
->gallivm
, int_coord_bld
->type
,
335 PIPE_FUNC_NOTEQUAL
, coord0
, length_minus_one
);
336 coord1
= LLVMBuildAnd(builder
,
337 lp_build_add(int_coord_bld
, coord0
, int_coord_bld
->one
),
342 case PIPE_TEX_WRAP_CLAMP
:
343 if (bld
->static_sampler_state
->normalized_coords
) {
344 /* scale coord to length */
345 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
348 offset
= lp_build_int_to_float(coord_bld
, offset
);
349 coord
= lp_build_add(coord_bld
, coord
, offset
);
352 /* clamp to [0, length] */
353 coord
= lp_build_clamp(coord_bld
, coord
, coord_bld
->zero
, length_f
);
355 coord
= lp_build_sub(coord_bld
, coord
, half
);
357 /* convert to int, compute lerp weight */
358 lp_build_ifloor_fract(coord_bld
, coord
, &coord0
, &weight
);
359 coord1
= lp_build_add(int_coord_bld
, coord0
, int_coord_bld
->one
);
362 case PIPE_TEX_WRAP_CLAMP_TO_EDGE
:
364 struct lp_build_context abs_coord_bld
= bld
->coord_bld
;
365 abs_coord_bld
.type
.sign
= FALSE
;
367 if (bld
->static_sampler_state
->normalized_coords
) {
368 /* mul by tex size */
369 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
372 offset
= lp_build_int_to_float(coord_bld
, offset
);
373 coord
= lp_build_add(coord_bld
, coord
, offset
);
376 /* clamp to length max */
377 coord
= lp_build_min(coord_bld
, coord
, length_f
);
379 coord
= lp_build_sub(coord_bld
, coord
, half
);
380 /* clamp to [0, length - 0.5] */
381 coord
= lp_build_max(coord_bld
, coord
, coord_bld
->zero
);
382 /* convert to int, compute lerp weight */
383 lp_build_ifloor_fract(&abs_coord_bld
, coord
, &coord0
, &weight
);
384 coord1
= lp_build_add(int_coord_bld
, coord0
, int_coord_bld
->one
);
385 /* coord1 = min(coord1, length-1) */
386 coord1
= lp_build_min(int_coord_bld
, coord1
, length_minus_one
);
390 case PIPE_TEX_WRAP_CLAMP_TO_BORDER
:
391 if (bld
->static_sampler_state
->normalized_coords
) {
392 /* scale coord to length */
393 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
396 offset
= lp_build_int_to_float(coord_bld
, offset
);
397 coord
= lp_build_add(coord_bld
, coord
, offset
);
399 /* was: clamp to [-0.5, length + 0.5], then sub 0.5 */
400 /* can skip clamp (though might not work for very large coord values */
401 coord
= lp_build_sub(coord_bld
, coord
, half
);
402 /* convert to int, compute lerp weight */
403 lp_build_ifloor_fract(coord_bld
, coord
, &coord0
, &weight
);
404 coord1
= lp_build_add(int_coord_bld
, coord0
, int_coord_bld
->one
);
407 case PIPE_TEX_WRAP_MIRROR_REPEAT
:
408 /* compute mirror function */
409 coord
= lp_build_coord_mirror(bld
, coord
);
411 /* scale coord to length */
412 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
413 coord
= lp_build_sub(coord_bld
, coord
, half
);
415 offset
= lp_build_int_to_float(coord_bld
, offset
);
416 coord
= lp_build_add(coord_bld
, coord
, offset
);
419 /* convert to int, compute lerp weight */
420 lp_build_ifloor_fract(coord_bld
, coord
, &coord0
, &weight
);
421 coord1
= lp_build_add(int_coord_bld
, coord0
, int_coord_bld
->one
);
423 /* coord0 = max(coord0, 0) */
424 coord0
= lp_build_max(int_coord_bld
, coord0
, int_coord_bld
->zero
);
425 /* coord1 = min(coord1, length-1) */
426 coord1
= lp_build_min(int_coord_bld
, coord1
, length_minus_one
);
429 case PIPE_TEX_WRAP_MIRROR_CLAMP
:
430 if (bld
->static_sampler_state
->normalized_coords
) {
431 /* scale coord to length */
432 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
435 offset
= lp_build_int_to_float(coord_bld
, offset
);
436 coord
= lp_build_add(coord_bld
, coord
, offset
);
438 coord
= lp_build_abs(coord_bld
, coord
);
440 /* clamp to [0, length] */
441 coord
= lp_build_min(coord_bld
, coord
, length_f
);
443 coord
= lp_build_sub(coord_bld
, coord
, half
);
445 /* convert to int, compute lerp weight */
446 lp_build_ifloor_fract(coord_bld
, coord
, &coord0
, &weight
);
447 coord1
= lp_build_add(int_coord_bld
, coord0
, int_coord_bld
->one
);
450 case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE
:
452 struct lp_build_context abs_coord_bld
= bld
->coord_bld
;
453 abs_coord_bld
.type
.sign
= FALSE
;
455 if (bld
->static_sampler_state
->normalized_coords
) {
456 /* scale coord to length */
457 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
460 offset
= lp_build_int_to_float(coord_bld
, offset
);
461 coord
= lp_build_add(coord_bld
, coord
, offset
);
463 coord
= lp_build_abs(coord_bld
, coord
);
465 /* clamp to length max */
466 coord
= lp_build_min(coord_bld
, coord
, length_f
);
468 coord
= lp_build_sub(coord_bld
, coord
, half
);
469 /* clamp to [0, length - 0.5] */
470 coord
= lp_build_max(coord_bld
, coord
, coord_bld
->zero
);
472 /* convert to int, compute lerp weight */
473 lp_build_ifloor_fract(&abs_coord_bld
, coord
, &coord0
, &weight
);
474 coord1
= lp_build_add(int_coord_bld
, coord0
, int_coord_bld
->one
);
475 /* coord1 = min(coord1, length-1) */
476 coord1
= lp_build_min(int_coord_bld
, coord1
, length_minus_one
);
480 case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER
:
482 if (bld
->static_sampler_state
->normalized_coords
) {
483 /* scale coord to length */
484 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
487 offset
= lp_build_int_to_float(coord_bld
, offset
);
488 coord
= lp_build_add(coord_bld
, coord
, offset
);
490 coord
= lp_build_abs(coord_bld
, coord
);
492 /* was: clamp to [-0.5, length + 0.5] then sub 0.5 */
493 /* skip clamp - always positive, and other side
494 only potentially matters for very large coords */
495 coord
= lp_build_sub(coord_bld
, coord
, half
);
497 /* convert to int, compute lerp weight */
498 lp_build_ifloor_fract(coord_bld
, coord
, &coord0
, &weight
);
499 coord1
= lp_build_add(int_coord_bld
, coord0
, int_coord_bld
->one
);
512 *weight_out
= weight
;
517 * Build LLVM code for texture wrap mode for nearest filtering.
518 * \param coord the incoming texcoord (nominally in [0,1])
519 * \param length the texture size along one dimension, as int vector
520 * \param length_f the texture size along one dimension, as float vector
521 * \param offset texel offset along one dimension (as int vector)
522 * \param is_pot if TRUE, length is a power of two
523 * \param wrap_mode one of PIPE_TEX_WRAP_x
526 lp_build_sample_wrap_nearest(struct lp_build_sample_context
*bld
,
529 LLVMValueRef length_f
,
534 struct lp_build_context
*coord_bld
= &bld
->coord_bld
;
535 struct lp_build_context
*int_coord_bld
= &bld
->int_coord_bld
;
536 LLVMBuilderRef builder
= bld
->gallivm
->builder
;
537 LLVMValueRef length_minus_one
= lp_build_sub(int_coord_bld
, length
, int_coord_bld
->one
);
541 case PIPE_TEX_WRAP_REPEAT
:
543 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
544 icoord
= lp_build_ifloor(coord_bld
, coord
);
546 icoord
= lp_build_add(int_coord_bld
, icoord
, offset
);
548 icoord
= LLVMBuildAnd(builder
, icoord
, length_minus_one
, "");
552 offset
= lp_build_int_to_float(coord_bld
, offset
);
553 offset
= lp_build_div(coord_bld
, offset
, length_f
);
554 coord
= lp_build_add(coord_bld
, coord
, offset
);
556 /* take fraction, unnormalize */
557 coord
= lp_build_fract_safe(coord_bld
, coord
);
558 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
559 icoord
= lp_build_itrunc(coord_bld
, coord
);
563 case PIPE_TEX_WRAP_CLAMP
:
564 case PIPE_TEX_WRAP_CLAMP_TO_EDGE
:
565 if (bld
->static_sampler_state
->normalized_coords
) {
566 /* scale coord to length */
567 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
571 /* use itrunc instead since we clamp to 0 anyway */
572 icoord
= lp_build_itrunc(coord_bld
, coord
);
574 icoord
= lp_build_add(int_coord_bld
, icoord
, offset
);
577 /* clamp to [0, length - 1]. */
578 icoord
= lp_build_clamp(int_coord_bld
, icoord
, int_coord_bld
->zero
,
582 case PIPE_TEX_WRAP_CLAMP_TO_BORDER
:
583 if (bld
->static_sampler_state
->normalized_coords
) {
584 /* scale coord to length */
585 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
587 /* no clamp necessary, border masking will handle this */
588 icoord
= lp_build_ifloor(coord_bld
, coord
);
590 icoord
= lp_build_add(int_coord_bld
, icoord
, offset
);
594 case PIPE_TEX_WRAP_MIRROR_REPEAT
:
596 offset
= lp_build_int_to_float(coord_bld
, offset
);
597 offset
= lp_build_div(coord_bld
, offset
, length_f
);
598 coord
= lp_build_add(coord_bld
, coord
, offset
);
600 /* compute mirror function */
601 coord
= lp_build_coord_mirror(bld
, coord
);
603 /* scale coord to length */
604 assert(bld
->static_sampler_state
->normalized_coords
);
605 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
607 /* itrunc == ifloor here */
608 icoord
= lp_build_itrunc(coord_bld
, coord
);
610 /* clamp to [0, length - 1] */
611 icoord
= lp_build_min(int_coord_bld
, icoord
, length_minus_one
);
614 case PIPE_TEX_WRAP_MIRROR_CLAMP
:
615 case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE
:
616 if (bld
->static_sampler_state
->normalized_coords
) {
617 /* scale coord to length */
618 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
621 offset
= lp_build_int_to_float(coord_bld
, offset
);
622 coord
= lp_build_add(coord_bld
, coord
, offset
);
624 coord
= lp_build_abs(coord_bld
, coord
);
626 /* itrunc == ifloor here */
627 icoord
= lp_build_itrunc(coord_bld
, coord
);
629 /* clamp to [0, length - 1] */
630 icoord
= lp_build_min(int_coord_bld
, icoord
, length_minus_one
);
633 case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER
:
634 if (bld
->static_sampler_state
->normalized_coords
) {
635 /* scale coord to length */
636 coord
= lp_build_mul(coord_bld
, coord
, length_f
);
639 offset
= lp_build_int_to_float(coord_bld
, offset
);
640 coord
= lp_build_add(coord_bld
, coord
, offset
);
642 coord
= lp_build_abs(coord_bld
, coord
);
644 /* itrunc == ifloor here */
645 icoord
= lp_build_itrunc(coord_bld
, coord
);
658 * Do shadow test/comparison.
659 * \param p shadow ref value
660 * \param texel the texel to compare against
663 lp_build_sample_comparefunc(struct lp_build_sample_context
*bld
,
667 struct lp_build_context
*texel_bld
= &bld
->texel_bld
;
671 //lp_build_print_value(bld->gallivm, "shadow cmp coord", p);
672 lp_build_print_value(bld
->gallivm
, "shadow cmp texel", texel
);
675 /* result = (p FUNC texel) ? 1 : 0 */
677 * honor d3d10 floating point rules here, which state that comparisons
678 * are ordered except NOT_EQUAL which is unordered.
680 if (bld
->static_sampler_state
->compare_func
!= PIPE_FUNC_NOTEQUAL
) {
681 res
= lp_build_cmp_ordered(texel_bld
, bld
->static_sampler_state
->compare_func
,
685 res
= lp_build_cmp(texel_bld
, bld
->static_sampler_state
->compare_func
,
693 * Generate code to sample a mipmap level with nearest filtering.
694 * If sampling a cube texture, r = cube face in [0,5].
697 lp_build_sample_image_nearest(struct lp_build_sample_context
*bld
,
699 LLVMValueRef row_stride_vec
,
700 LLVMValueRef img_stride_vec
,
701 LLVMValueRef data_ptr
,
702 LLVMValueRef mipoffsets
,
703 LLVMValueRef
*coords
,
704 const LLVMValueRef
*offsets
,
705 LLVMValueRef colors_out
[4])
707 const unsigned dims
= bld
->dims
;
708 LLVMValueRef width_vec
;
709 LLVMValueRef height_vec
;
710 LLVMValueRef depth_vec
;
711 LLVMValueRef flt_size
;
712 LLVMValueRef flt_width_vec
;
713 LLVMValueRef flt_height_vec
;
714 LLVMValueRef flt_depth_vec
;
715 LLVMValueRef x
, y
= NULL
, z
= NULL
;
717 lp_build_extract_image_sizes(bld
,
721 &width_vec
, &height_vec
, &depth_vec
);
723 flt_size
= lp_build_int_to_float(&bld
->float_size_bld
, size
);
725 lp_build_extract_image_sizes(bld
,
726 &bld
->float_size_bld
,
729 &flt_width_vec
, &flt_height_vec
, &flt_depth_vec
);
732 * Compute integer texcoords.
734 x
= lp_build_sample_wrap_nearest(bld
, coords
[0], width_vec
,
735 flt_width_vec
, offsets
[0],
736 bld
->static_texture_state
->pot_width
,
737 bld
->static_sampler_state
->wrap_s
);
738 lp_build_name(x
, "tex.x.wrapped");
741 y
= lp_build_sample_wrap_nearest(bld
, coords
[1], height_vec
,
742 flt_height_vec
, offsets
[1],
743 bld
->static_texture_state
->pot_height
,
744 bld
->static_sampler_state
->wrap_t
);
745 lp_build_name(y
, "tex.y.wrapped");
748 z
= lp_build_sample_wrap_nearest(bld
, coords
[2], depth_vec
,
749 flt_depth_vec
, offsets
[2],
750 bld
->static_texture_state
->pot_depth
,
751 bld
->static_sampler_state
->wrap_r
);
752 lp_build_name(z
, "tex.z.wrapped");
755 if (bld
->static_texture_state
->target
== PIPE_TEXTURE_CUBE
||
756 bld
->static_texture_state
->target
== PIPE_TEXTURE_1D_ARRAY
||
757 bld
->static_texture_state
->target
== PIPE_TEXTURE_2D_ARRAY
) {
759 lp_build_name(z
, "tex.z.layer");
763 * Get texture colors.
765 lp_build_sample_texel_soa(bld
,
766 width_vec
, height_vec
, depth_vec
,
768 row_stride_vec
, img_stride_vec
,
769 data_ptr
, mipoffsets
, colors_out
);
771 if (bld
->static_sampler_state
->compare_mode
!= PIPE_TEX_COMPARE_NONE
) {
773 cmpval
= lp_build_sample_comparefunc(bld
, coords
[4], colors_out
[0]);
774 /* this is really just a AND 1.0, cmpval but llvm is clever enough */
775 colors_out
[0] = lp_build_select(&bld
->texel_bld
, cmpval
,
776 bld
->texel_bld
.one
, bld
->texel_bld
.zero
);
777 colors_out
[1] = colors_out
[2] = colors_out
[3] = colors_out
[0];
784 * Like a lerp, but inputs are 0/~0 masks, so can simplify slightly.
787 lp_build_masklerp(struct lp_build_context
*bld
,
792 struct gallivm_state
*gallivm
= bld
->gallivm
;
793 LLVMBuilderRef builder
= gallivm
->builder
;
794 LLVMValueRef weight2
;
796 weight2
= lp_build_sub(bld
, bld
->one
, weight
);
797 weight
= LLVMBuildBitCast(builder
, weight
,
798 lp_build_int_vec_type(gallivm
, bld
->type
), "");
799 weight2
= LLVMBuildBitCast(builder
, weight2
,
800 lp_build_int_vec_type(gallivm
, bld
->type
), "");
801 weight
= LLVMBuildAnd(builder
, weight
, mask1
, "");
802 weight2
= LLVMBuildAnd(builder
, weight2
, mask0
, "");
803 weight
= LLVMBuildBitCast(builder
, weight
, bld
->vec_type
, "");
804 weight2
= LLVMBuildBitCast(builder
, weight2
, bld
->vec_type
, "");
805 return lp_build_add(bld
, weight
, weight2
);
809 * Like a 2d lerp, but inputs are 0/~0 masks, so can simplify slightly.
812 lp_build_masklerp2d(struct lp_build_context
*bld
,
813 LLVMValueRef weight0
,
814 LLVMValueRef weight1
,
820 LLVMValueRef val0
= lp_build_masklerp(bld
, weight0
, mask00
, mask01
);
821 LLVMValueRef val1
= lp_build_masklerp(bld
, weight0
, mask10
, mask11
);
822 return lp_build_lerp(bld
, weight1
, val0
, val1
, 0);
826 * this is a bit excessive code for something OpenGL just recommends
827 * but does not require.
829 #define ACCURATE_CUBE_CORNERS 1
832 * Generate code to sample a mipmap level with linear filtering.
833 * If sampling a cube texture, r = cube face in [0,5].
834 * If linear_mask is present, only pixels having their mask set
835 * will receive linear filtering, the rest will use nearest.
838 lp_build_sample_image_linear(struct lp_build_sample_context
*bld
,
840 LLVMValueRef linear_mask
,
841 LLVMValueRef row_stride_vec
,
842 LLVMValueRef img_stride_vec
,
843 LLVMValueRef data_ptr
,
844 LLVMValueRef mipoffsets
,
845 LLVMValueRef
*coords
,
846 const LLVMValueRef
*offsets
,
847 LLVMValueRef colors_out
[4])
849 LLVMBuilderRef builder
= bld
->gallivm
->builder
;
850 struct lp_build_context
*ivec_bld
= &bld
->int_coord_bld
;
851 struct lp_build_context
*coord_bld
= &bld
->coord_bld
;
852 const unsigned dims
= bld
->dims
;
853 LLVMValueRef width_vec
;
854 LLVMValueRef height_vec
;
855 LLVMValueRef depth_vec
;
856 LLVMValueRef flt_size
;
857 LLVMValueRef flt_width_vec
;
858 LLVMValueRef flt_height_vec
;
859 LLVMValueRef flt_depth_vec
;
860 LLVMValueRef fall_off
[4], have_corners
;
861 LLVMValueRef z1
= NULL
;
862 LLVMValueRef z00
= NULL
, z01
= NULL
, z10
= NULL
, z11
= NULL
;
863 LLVMValueRef x00
= NULL
, x01
= NULL
, x10
= NULL
, x11
= NULL
;
864 LLVMValueRef y00
= NULL
, y01
= NULL
, y10
= NULL
, y11
= NULL
;
865 LLVMValueRef s_fpart
, t_fpart
= NULL
, r_fpart
= NULL
;
866 LLVMValueRef xs
[4], ys
[4], zs
[4];
867 LLVMValueRef neighbors
[2][2][4];
868 int chan
, texel_index
;
869 boolean seamless_cube_filter
, accurate_cube_corners
;
871 seamless_cube_filter
= bld
->static_texture_state
->target
== PIPE_TEXTURE_CUBE
&&
872 bld
->static_sampler_state
->seamless_cube_map
;
873 accurate_cube_corners
= ACCURATE_CUBE_CORNERS
&& seamless_cube_filter
;
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.
893 if (!seamless_cube_filter
) {
894 lp_build_sample_wrap_linear(bld
, coords
[0], width_vec
,
895 flt_width_vec
, offsets
[0],
896 bld
->static_texture_state
->pot_width
,
897 bld
->static_sampler_state
->wrap_s
,
898 &x00
, &x01
, &s_fpart
);
899 lp_build_name(x00
, "tex.x0.wrapped");
900 lp_build_name(x01
, "tex.x1.wrapped");
905 lp_build_sample_wrap_linear(bld
, coords
[1], height_vec
,
906 flt_height_vec
, offsets
[1],
907 bld
->static_texture_state
->pot_height
,
908 bld
->static_sampler_state
->wrap_t
,
909 &y00
, &y10
, &t_fpart
);
910 lp_build_name(y00
, "tex.y0.wrapped");
911 lp_build_name(y10
, "tex.y1.wrapped");
916 lp_build_sample_wrap_linear(bld
, coords
[2], depth_vec
,
917 flt_depth_vec
, offsets
[2],
918 bld
->static_texture_state
->pot_depth
,
919 bld
->static_sampler_state
->wrap_r
,
920 &z00
, &z1
, &r_fpart
);
921 z01
= z10
= z11
= z00
;
922 lp_build_name(z00
, "tex.z0.wrapped");
923 lp_build_name(z1
, "tex.z1.wrapped");
926 if (bld
->static_texture_state
->target
== PIPE_TEXTURE_CUBE
||
927 bld
->static_texture_state
->target
== PIPE_TEXTURE_1D_ARRAY
||
928 bld
->static_texture_state
->target
== PIPE_TEXTURE_2D_ARRAY
) {
929 z00
= z01
= z10
= z11
= z1
= coords
[2]; /* cube face or layer */
930 lp_build_name(z00
, "tex.z0.layer");
931 lp_build_name(z1
, "tex.z1.layer");
935 struct lp_build_if_state edge_if
;
937 LLVMValueRef new_faces
[4], new_xcoords
[4][2], new_ycoords
[4][2];
938 LLVMValueRef coord
, have_edge
, have_corner
;
939 LLVMValueRef fall_off_ym_notxm
, fall_off_ym_notxp
, fall_off_x
, fall_off_y
;
940 LLVMValueRef fall_off_yp_notxm
, fall_off_yp_notxp
;
941 LLVMValueRef x0
, x1
, y0
, y1
, y0_clamped
, y1_clamped
;
942 LLVMValueRef face
= coords
[2];
943 LLVMValueRef half
= lp_build_const_vec(bld
->gallivm
, coord_bld
->type
, 0.5f
);
944 LLVMValueRef length_minus_one
= lp_build_sub(ivec_bld
, width_vec
, ivec_bld
->one
);
945 /* XXX drop height calcs. Could (should) do this without seamless filtering too */
946 height_vec
= width_vec
;
947 flt_height_vec
= flt_width_vec
;
949 /* XXX the overflow logic is actually sort of duplicated with trilinear,
950 * since an overflow in one mip should also have a corresponding overflow
953 /* should always have normalized coords, and offsets are undefined */
954 assert(bld
->static_sampler_state
->normalized_coords
);
955 coord
= lp_build_mul(coord_bld
, coords
[0], flt_width_vec
);
956 /* instead of clamp, build mask if overflowed */
957 coord
= lp_build_sub(coord_bld
, coord
, half
);
958 /* convert to int, compute lerp weight */
959 /* not ideal with AVX (and no AVX2) */
960 lp_build_ifloor_fract(coord_bld
, coord
, &x0
, &s_fpart
);
961 x1
= lp_build_add(ivec_bld
, x0
, ivec_bld
->one
);
962 coord
= lp_build_mul(coord_bld
, coords
[1], flt_height_vec
);
963 coord
= lp_build_sub(coord_bld
, coord
, half
);
964 lp_build_ifloor_fract(coord_bld
, coord
, &y0
, &t_fpart
);
965 y1
= lp_build_add(ivec_bld
, y0
, ivec_bld
->one
);
967 fall_off
[0] = lp_build_cmp(ivec_bld
, PIPE_FUNC_LESS
, x0
, ivec_bld
->zero
);
968 fall_off
[1] = lp_build_cmp(ivec_bld
, PIPE_FUNC_GREATER
, x1
, length_minus_one
);
969 fall_off
[2] = lp_build_cmp(ivec_bld
, PIPE_FUNC_LESS
, y0
, ivec_bld
->zero
);
970 fall_off
[3] = lp_build_cmp(ivec_bld
, PIPE_FUNC_GREATER
, y1
, length_minus_one
);
972 fall_off_x
= lp_build_or(ivec_bld
, fall_off
[0], fall_off
[1]);
973 fall_off_y
= lp_build_or(ivec_bld
, fall_off
[2], fall_off
[3]);
974 have_edge
= lp_build_or(ivec_bld
, fall_off_x
, fall_off_y
);
975 have_edge
= lp_build_any_true_range(ivec_bld
, ivec_bld
->type
.length
, have_edge
);
977 /* needed for accurate corner filtering branch later, rely on 0 init */
978 int1t
= LLVMInt1TypeInContext(bld
->gallivm
->context
);
979 have_corners
= lp_build_alloca(bld
->gallivm
, int1t
, "have_corner");
981 for (texel_index
= 0; texel_index
< 4; texel_index
++) {
982 xs
[texel_index
] = lp_build_alloca(bld
->gallivm
, ivec_bld
->vec_type
, "xs");
983 ys
[texel_index
] = lp_build_alloca(bld
->gallivm
, ivec_bld
->vec_type
, "ys");
984 zs
[texel_index
] = lp_build_alloca(bld
->gallivm
, ivec_bld
->vec_type
, "zs");
987 lp_build_if(&edge_if
, bld
->gallivm
, have_edge
);
989 have_corner
= lp_build_and(ivec_bld
, fall_off_x
, fall_off_y
);
990 have_corner
= lp_build_any_true_range(ivec_bld
, ivec_bld
->type
.length
, have_corner
);
991 LLVMBuildStore(builder
, have_corner
, have_corners
);
994 * Need to feed clamped values here for cheap corner handling,
995 * but only for y coord (as when falling off both edges we only
996 * fall off the x one) - this should be sufficient.
998 y0_clamped
= lp_build_max(ivec_bld
, y0
, ivec_bld
->zero
);
999 y1_clamped
= lp_build_min(ivec_bld
, y1
, length_minus_one
);
1002 * Get all possible new coords.
1004 lp_build_cube_new_coords(ivec_bld
, face
,
1005 x0
, x1
, y0_clamped
, y1_clamped
,
1007 new_faces
, new_xcoords
, new_ycoords
);
1009 /* handle fall off x-, x+ direction */
1010 /* determine new coords, face (not both fall_off vars can be true at same time) */
1011 x00
= lp_build_select(ivec_bld
, fall_off
[0], new_xcoords
[0][0], x0
);
1012 y00
= lp_build_select(ivec_bld
, fall_off
[0], new_ycoords
[0][0], y0_clamped
);
1013 x10
= lp_build_select(ivec_bld
, fall_off
[0], new_xcoords
[0][1], x0
);
1014 y10
= lp_build_select(ivec_bld
, fall_off
[0], new_ycoords
[0][1], y1_clamped
);
1015 x01
= lp_build_select(ivec_bld
, fall_off
[1], new_xcoords
[1][0], x1
);
1016 y01
= lp_build_select(ivec_bld
, fall_off
[1], new_ycoords
[1][0], y0_clamped
);
1017 x11
= lp_build_select(ivec_bld
, fall_off
[1], new_xcoords
[1][1], x1
);
1018 y11
= lp_build_select(ivec_bld
, fall_off
[1], new_ycoords
[1][1], y1_clamped
);
1020 z00
= z10
= lp_build_select(ivec_bld
, fall_off
[0], new_faces
[0], face
);
1021 z01
= z11
= lp_build_select(ivec_bld
, fall_off
[1], new_faces
[1], face
);
1023 /* handle fall off y-, y+ direction */
1025 * Cheap corner logic: just hack up things so a texel doesn't fall
1026 * off both sides (which means filter weights will be wrong but we'll only
1027 * use valid texels in the filter).
1028 * This means however (y) coords must additionally be clamped (see above).
1029 * This corner handling should be fully OpenGL (but not d3d10) compliant.
1031 fall_off_ym_notxm
= lp_build_andnot(ivec_bld
, fall_off
[2], fall_off
[0]);
1032 fall_off_ym_notxp
= lp_build_andnot(ivec_bld
, fall_off
[2], fall_off
[1]);
1033 fall_off_yp_notxm
= lp_build_andnot(ivec_bld
, fall_off
[3], fall_off
[0]);
1034 fall_off_yp_notxp
= lp_build_andnot(ivec_bld
, fall_off
[3], fall_off
[1]);
1036 x00
= lp_build_select(ivec_bld
, fall_off_ym_notxm
, new_xcoords
[2][0], x00
);
1037 y00
= lp_build_select(ivec_bld
, fall_off_ym_notxm
, new_ycoords
[2][0], y00
);
1038 x01
= lp_build_select(ivec_bld
, fall_off_ym_notxp
, new_xcoords
[2][1], x01
);
1039 y01
= lp_build_select(ivec_bld
, fall_off_ym_notxp
, new_ycoords
[2][1], y01
);
1040 x10
= lp_build_select(ivec_bld
, fall_off_yp_notxm
, new_xcoords
[3][0], x10
);
1041 y10
= lp_build_select(ivec_bld
, fall_off_yp_notxm
, new_ycoords
[3][0], y10
);
1042 x11
= lp_build_select(ivec_bld
, fall_off_yp_notxp
, new_xcoords
[3][1], x11
);
1043 y11
= lp_build_select(ivec_bld
, fall_off_yp_notxp
, new_ycoords
[3][1], y11
);
1045 z00
= lp_build_select(ivec_bld
, fall_off_ym_notxm
, new_faces
[2], z00
);
1046 z01
= lp_build_select(ivec_bld
, fall_off_ym_notxp
, new_faces
[2], z01
);
1047 z10
= lp_build_select(ivec_bld
, fall_off_yp_notxm
, new_faces
[3], z10
);
1048 z11
= lp_build_select(ivec_bld
, fall_off_yp_notxp
, new_faces
[3], z11
);
1050 LLVMBuildStore(builder
, x00
, xs
[0]);
1051 LLVMBuildStore(builder
, x01
, xs
[1]);
1052 LLVMBuildStore(builder
, x10
, xs
[2]);
1053 LLVMBuildStore(builder
, x11
, xs
[3]);
1054 LLVMBuildStore(builder
, y00
, ys
[0]);
1055 LLVMBuildStore(builder
, y01
, ys
[1]);
1056 LLVMBuildStore(builder
, y10
, ys
[2]);
1057 LLVMBuildStore(builder
, y11
, ys
[3]);
1058 LLVMBuildStore(builder
, z00
, zs
[0]);
1059 LLVMBuildStore(builder
, z01
, zs
[1]);
1060 LLVMBuildStore(builder
, z10
, zs
[2]);
1061 LLVMBuildStore(builder
, z11
, zs
[3]);
1063 lp_build_else(&edge_if
);
1065 LLVMBuildStore(builder
, x0
, xs
[0]);
1066 LLVMBuildStore(builder
, x1
, xs
[1]);
1067 LLVMBuildStore(builder
, x0
, xs
[2]);
1068 LLVMBuildStore(builder
, x1
, xs
[3]);
1069 LLVMBuildStore(builder
, y0
, ys
[0]);
1070 LLVMBuildStore(builder
, y0
, ys
[1]);
1071 LLVMBuildStore(builder
, y1
, ys
[2]);
1072 LLVMBuildStore(builder
, y1
, ys
[3]);
1073 LLVMBuildStore(builder
, face
, zs
[0]);
1074 LLVMBuildStore(builder
, face
, zs
[1]);
1075 LLVMBuildStore(builder
, face
, zs
[2]);
1076 LLVMBuildStore(builder
, face
, zs
[3]);
1078 lp_build_endif(&edge_if
);
1080 x00
= LLVMBuildLoad(builder
, xs
[0], "");
1081 x01
= LLVMBuildLoad(builder
, xs
[1], "");
1082 x10
= LLVMBuildLoad(builder
, xs
[2], "");
1083 x11
= LLVMBuildLoad(builder
, xs
[3], "");
1084 y00
= LLVMBuildLoad(builder
, ys
[0], "");
1085 y01
= LLVMBuildLoad(builder
, ys
[1], "");
1086 y10
= LLVMBuildLoad(builder
, ys
[2], "");
1087 y11
= LLVMBuildLoad(builder
, ys
[3], "");
1088 z00
= LLVMBuildLoad(builder
, zs
[0], "");
1089 z01
= LLVMBuildLoad(builder
, zs
[1], "");
1090 z10
= LLVMBuildLoad(builder
, zs
[2], "");
1091 z11
= LLVMBuildLoad(builder
, zs
[3], "");
1096 * Whack filter weights into place. Whatever texel had more weight is
1097 * the one which should have been selected by nearest filtering hence
1098 * just use 100% weight for it.
1100 struct lp_build_context
*c_bld
= &bld
->coord_bld
;
1101 LLVMValueRef w1_mask
, w1_weight
;
1102 LLVMValueRef half
= lp_build_const_vec(bld
->gallivm
, c_bld
->type
, 0.5f
);
1104 w1_mask
= lp_build_cmp(c_bld
, PIPE_FUNC_GREATER
, s_fpart
, half
);
1105 /* this select is really just a "and" */
1106 w1_weight
= lp_build_select(c_bld
, w1_mask
, c_bld
->one
, c_bld
->zero
);
1107 s_fpart
= lp_build_select(c_bld
, linear_mask
, s_fpart
, w1_weight
);
1109 w1_mask
= lp_build_cmp(c_bld
, PIPE_FUNC_GREATER
, t_fpart
, half
);
1110 w1_weight
= lp_build_select(c_bld
, w1_mask
, c_bld
->one
, c_bld
->zero
);
1111 t_fpart
= lp_build_select(c_bld
, linear_mask
, t_fpart
, w1_weight
);
1113 w1_mask
= lp_build_cmp(c_bld
, PIPE_FUNC_GREATER
, r_fpart
, half
);
1114 w1_weight
= lp_build_select(c_bld
, w1_mask
, c_bld
->one
, c_bld
->zero
);
1115 r_fpart
= lp_build_select(c_bld
, linear_mask
, r_fpart
, w1_weight
);
1121 * Get texture colors.
1123 /* get x0/x1 texels */
1124 lp_build_sample_texel_soa(bld
,
1125 width_vec
, height_vec
, depth_vec
,
1127 row_stride_vec
, img_stride_vec
,
1128 data_ptr
, mipoffsets
, neighbors
[0][0]);
1129 lp_build_sample_texel_soa(bld
,
1130 width_vec
, height_vec
, depth_vec
,
1132 row_stride_vec
, img_stride_vec
,
1133 data_ptr
, mipoffsets
, neighbors
[0][1]);
1136 if (bld
->static_sampler_state
->compare_mode
== PIPE_TEX_COMPARE_NONE
) {
1137 /* Interpolate two samples from 1D image to produce one color */
1138 for (chan
= 0; chan
< 4; chan
++) {
1139 colors_out
[chan
] = lp_build_lerp(&bld
->texel_bld
, s_fpart
,
1140 neighbors
[0][0][chan
],
1141 neighbors
[0][1][chan
],
1146 LLVMValueRef cmpval0
, cmpval1
;
1147 cmpval0
= lp_build_sample_comparefunc(bld
, coords
[4], neighbors
[0][0][0]);
1148 cmpval1
= lp_build_sample_comparefunc(bld
, coords
[4], neighbors
[0][1][0]);
1149 /* simplified lerp, AND mask with weight and add */
1150 colors_out
[0] = lp_build_masklerp(&bld
->texel_bld
, s_fpart
,
1152 colors_out
[1] = colors_out
[2] = colors_out
[3] = colors_out
[0];
1157 struct lp_build_if_state corner_if
;
1158 LLVMValueRef colors0
[4], colorss
[4];
1160 /* get x0/x1 texels at y1 */
1161 lp_build_sample_texel_soa(bld
,
1162 width_vec
, height_vec
, depth_vec
,
1164 row_stride_vec
, img_stride_vec
,
1165 data_ptr
, mipoffsets
, neighbors
[1][0]);
1166 lp_build_sample_texel_soa(bld
,
1167 width_vec
, height_vec
, depth_vec
,
1169 row_stride_vec
, img_stride_vec
,
1170 data_ptr
, mipoffsets
, neighbors
[1][1]);
1173 * To avoid having to duplicate linear_mask / fetch code use
1174 * another branch (with corner condition though edge would work
1177 if (accurate_cube_corners
) {
1178 LLVMValueRef w00
, w01
, w10
, w11
, wx0
, wy0
;
1179 LLVMValueRef c_weight
, c00
, c01
, c10
, c11
;
1180 LLVMValueRef have_corner
, one_third
, tmp
;
1182 colorss
[0] = lp_build_alloca(bld
->gallivm
, coord_bld
->vec_type
, "cs");
1183 colorss
[1] = lp_build_alloca(bld
->gallivm
, coord_bld
->vec_type
, "cs");
1184 colorss
[2] = lp_build_alloca(bld
->gallivm
, coord_bld
->vec_type
, "cs");
1185 colorss
[3] = lp_build_alloca(bld
->gallivm
, coord_bld
->vec_type
, "cs");
1187 have_corner
= LLVMBuildLoad(builder
, have_corners
, "");
1189 lp_build_if(&corner_if
, bld
->gallivm
, have_corner
);
1192 * we can't use standard 2d lerp as we need per-element weight
1193 * in case of corners, so just calculate bilinear result as
1194 * w00*s00 + w01*s01 + w10*s10 + w11*s11.
1195 * (This is actually less work than using 2d lerp, 7 vs. 9 instructions,
1196 * however calculating the weights needs another 6, so actually probably
1197 * not slower than 2d lerp only for 4 channels as weights only need
1198 * to be calculated once - of course fixing the weights has additional cost.)
1200 wx0
= lp_build_sub(coord_bld
, coord_bld
->one
, s_fpart
);
1201 wy0
= lp_build_sub(coord_bld
, coord_bld
->one
, t_fpart
);
1202 w00
= lp_build_mul(coord_bld
, wx0
, wy0
);
1203 w01
= lp_build_mul(coord_bld
, s_fpart
, wy0
);
1204 w10
= lp_build_mul(coord_bld
, wx0
, t_fpart
);
1205 w11
= lp_build_mul(coord_bld
, s_fpart
, t_fpart
);
1207 /* find corner weight */
1208 c00
= lp_build_and(ivec_bld
, fall_off
[0], fall_off
[2]);
1209 c_weight
= lp_build_select(coord_bld
, c00
, w00
, coord_bld
->zero
);
1210 c01
= lp_build_and(ivec_bld
, fall_off
[1], fall_off
[2]);
1211 c_weight
= lp_build_select(coord_bld
, c01
, w01
, c_weight
);
1212 c10
= lp_build_and(ivec_bld
, fall_off
[0], fall_off
[3]);
1213 c_weight
= lp_build_select(coord_bld
, c10
, w10
, c_weight
);
1214 c11
= lp_build_and(ivec_bld
, fall_off
[1], fall_off
[3]);
1215 c_weight
= lp_build_select(coord_bld
, c11
, w11
, c_weight
);
1218 * add 1/3 of the corner weight to each of the 3 other samples
1219 * and null out corner weight
1221 one_third
= lp_build_const_vec(bld
->gallivm
, coord_bld
->type
, 1.0f
/3.0f
);
1222 c_weight
= lp_build_mul(coord_bld
, c_weight
, one_third
);
1223 w00
= lp_build_add(coord_bld
, w00
, c_weight
);
1224 c00
= LLVMBuildBitCast(builder
, c00
, coord_bld
->vec_type
, "");
1225 w00
= lp_build_andnot(coord_bld
, w00
, c00
);
1226 w01
= lp_build_add(coord_bld
, w01
, c_weight
);
1227 c01
= LLVMBuildBitCast(builder
, c01
, coord_bld
->vec_type
, "");
1228 w01
= lp_build_andnot(coord_bld
, w01
, c01
);
1229 w10
= lp_build_add(coord_bld
, w10
, c_weight
);
1230 c10
= LLVMBuildBitCast(builder
, c10
, coord_bld
->vec_type
, "");
1231 w10
= lp_build_andnot(coord_bld
, w10
, c10
);
1232 w11
= lp_build_add(coord_bld
, w11
, c_weight
);
1233 c11
= LLVMBuildBitCast(builder
, c11
, coord_bld
->vec_type
, "");
1234 w11
= lp_build_andnot(coord_bld
, w11
, c11
);
1236 if (bld
->static_sampler_state
->compare_mode
== PIPE_TEX_COMPARE_NONE
) {
1237 for (chan
= 0; chan
< 4; chan
++) {
1238 colors0
[chan
] = lp_build_mul(coord_bld
, w00
, neighbors
[0][0][chan
]);
1239 tmp
= lp_build_mul(coord_bld
, w01
, neighbors
[0][1][chan
]);
1240 colors0
[chan
] = lp_build_add(coord_bld
, tmp
, colors0
[chan
]);
1241 tmp
= lp_build_mul(coord_bld
, w10
, neighbors
[1][0][chan
]);
1242 colors0
[chan
] = lp_build_add(coord_bld
, tmp
, colors0
[chan
]);
1243 tmp
= lp_build_mul(coord_bld
, w11
, neighbors
[1][1][chan
]);
1244 colors0
[chan
] = lp_build_add(coord_bld
, tmp
, colors0
[chan
]);
1248 LLVMValueRef cmpval00
, cmpval01
, cmpval10
, cmpval11
;
1249 cmpval00
= lp_build_sample_comparefunc(bld
, coords
[4], neighbors
[0][0][0]);
1250 cmpval01
= lp_build_sample_comparefunc(bld
, coords
[4], neighbors
[0][1][0]);
1251 cmpval10
= lp_build_sample_comparefunc(bld
, coords
[4], neighbors
[1][0][0]);
1252 cmpval11
= lp_build_sample_comparefunc(bld
, coords
[4], neighbors
[1][1][0]);
1253 /* inputs to interpolation are just masks so just add masked weights together */
1254 cmpval00
= LLVMBuildBitCast(builder
, cmpval00
, coord_bld
->vec_type
, "");
1255 cmpval01
= LLVMBuildBitCast(builder
, cmpval01
, coord_bld
->vec_type
, "");
1256 cmpval10
= LLVMBuildBitCast(builder
, cmpval10
, coord_bld
->vec_type
, "");
1257 cmpval11
= LLVMBuildBitCast(builder
, cmpval11
, coord_bld
->vec_type
, "");
1258 colors0
[0] = lp_build_and(coord_bld
, w00
, cmpval00
);
1259 tmp
= lp_build_and(coord_bld
, w01
, cmpval01
);
1260 colors0
[0] = lp_build_add(coord_bld
, tmp
, colors0
[0]);
1261 tmp
= lp_build_and(coord_bld
, w10
, cmpval10
);
1262 colors0
[0] = lp_build_add(coord_bld
, tmp
, colors0
[0]);
1263 tmp
= lp_build_and(coord_bld
, w11
, cmpval11
);
1264 colors0
[0] = lp_build_add(coord_bld
, tmp
, colors0
[0]);
1265 colors0
[1] = colors0
[2] = colors0
[3] = colors0
[0];
1268 LLVMBuildStore(builder
, colors0
[0], colorss
[0]);
1269 LLVMBuildStore(builder
, colors0
[1], colorss
[1]);
1270 LLVMBuildStore(builder
, colors0
[2], colorss
[2]);
1271 LLVMBuildStore(builder
, colors0
[3], colorss
[3]);
1273 lp_build_else(&corner_if
);
1276 if (bld
->static_sampler_state
->compare_mode
== PIPE_TEX_COMPARE_NONE
) {
1277 /* Bilinear interpolate the four samples from the 2D image / 3D slice */
1278 for (chan
= 0; chan
< 4; chan
++) {
1279 colors0
[chan
] = lp_build_lerp_2d(&bld
->texel_bld
,
1281 neighbors
[0][0][chan
],
1282 neighbors
[0][1][chan
],
1283 neighbors
[1][0][chan
],
1284 neighbors
[1][1][chan
],
1289 LLVMValueRef cmpval00
, cmpval01
, cmpval10
, cmpval11
;
1290 cmpval00
= lp_build_sample_comparefunc(bld
, coords
[4], neighbors
[0][0][0]);
1291 cmpval01
= lp_build_sample_comparefunc(bld
, coords
[4], neighbors
[0][1][0]);
1292 cmpval10
= lp_build_sample_comparefunc(bld
, coords
[4], neighbors
[1][0][0]);
1293 cmpval11
= lp_build_sample_comparefunc(bld
, coords
[4], neighbors
[1][1][0]);
1294 colors0
[0] = lp_build_masklerp2d(&bld
->texel_bld
, s_fpart
, t_fpart
,
1295 cmpval00
, cmpval01
, cmpval10
, cmpval11
);
1296 colors0
[1] = colors0
[2] = colors0
[3] = colors0
[0];
1299 if (accurate_cube_corners
) {
1300 LLVMBuildStore(builder
, colors0
[0], colorss
[0]);
1301 LLVMBuildStore(builder
, colors0
[1], colorss
[1]);
1302 LLVMBuildStore(builder
, colors0
[2], colorss
[2]);
1303 LLVMBuildStore(builder
, colors0
[3], colorss
[3]);
1305 lp_build_endif(&corner_if
);
1307 colors0
[0] = LLVMBuildLoad(builder
, colorss
[0], "");
1308 colors0
[1] = LLVMBuildLoad(builder
, colorss
[1], "");
1309 colors0
[2] = LLVMBuildLoad(builder
, colorss
[2], "");
1310 colors0
[3] = LLVMBuildLoad(builder
, colorss
[3], "");
1314 LLVMValueRef neighbors1
[2][2][4];
1315 LLVMValueRef colors1
[4];
1317 /* get x0/x1/y0/y1 texels at z1 */
1318 lp_build_sample_texel_soa(bld
,
1319 width_vec
, height_vec
, depth_vec
,
1321 row_stride_vec
, img_stride_vec
,
1322 data_ptr
, mipoffsets
, neighbors1
[0][0]);
1323 lp_build_sample_texel_soa(bld
,
1324 width_vec
, height_vec
, depth_vec
,
1326 row_stride_vec
, img_stride_vec
,
1327 data_ptr
, mipoffsets
, neighbors1
[0][1]);
1328 lp_build_sample_texel_soa(bld
,
1329 width_vec
, height_vec
, depth_vec
,
1331 row_stride_vec
, img_stride_vec
,
1332 data_ptr
, mipoffsets
, neighbors1
[1][0]);
1333 lp_build_sample_texel_soa(bld
,
1334 width_vec
, height_vec
, depth_vec
,
1336 row_stride_vec
, img_stride_vec
,
1337 data_ptr
, mipoffsets
, neighbors1
[1][1]);
1339 if (bld
->static_sampler_state
->compare_mode
== PIPE_TEX_COMPARE_NONE
) {
1340 /* Bilinear interpolate the four samples from the second Z slice */
1341 for (chan
= 0; chan
< 4; chan
++) {
1342 colors1
[chan
] = lp_build_lerp_2d(&bld
->texel_bld
,
1344 neighbors1
[0][0][chan
],
1345 neighbors1
[0][1][chan
],
1346 neighbors1
[1][0][chan
],
1347 neighbors1
[1][1][chan
],
1350 /* Linearly interpolate the two samples from the two 3D slices */
1351 for (chan
= 0; chan
< 4; chan
++) {
1352 colors_out
[chan
] = lp_build_lerp(&bld
->texel_bld
,
1354 colors0
[chan
], colors1
[chan
],
1359 LLVMValueRef cmpval00
, cmpval01
, cmpval10
, cmpval11
;
1360 cmpval00
= lp_build_sample_comparefunc(bld
, coords
[4], neighbors
[0][0][0]);
1361 cmpval01
= lp_build_sample_comparefunc(bld
, coords
[4], neighbors
[0][1][0]);
1362 cmpval10
= lp_build_sample_comparefunc(bld
, coords
[4], neighbors
[1][0][0]);
1363 cmpval11
= lp_build_sample_comparefunc(bld
, coords
[4], neighbors
[1][1][0]);
1364 colors1
[0] = lp_build_masklerp2d(&bld
->texel_bld
, s_fpart
, t_fpart
,
1365 cmpval00
, cmpval01
, cmpval10
, cmpval11
);
1366 /* Linearly interpolate the two samples from the two 3D slices */
1367 colors_out
[0] = lp_build_lerp(&bld
->texel_bld
,
1369 colors0
[0], colors1
[0],
1371 colors_out
[1] = colors_out
[2] = colors_out
[3] = colors_out
[0];
1376 for (chan
= 0; chan
< 4; chan
++) {
1377 colors_out
[chan
] = colors0
[chan
];
1385 * Sample the texture/mipmap using given image filter and mip filter.
1386 * ilevel0 and ilevel1 indicate the two mipmap levels to sample
1387 * from (vectors or scalars).
1388 * If we're using nearest miplevel sampling the '1' values will be null/unused.
1391 lp_build_sample_mipmap(struct lp_build_sample_context
*bld
,
1392 unsigned img_filter
,
1393 unsigned mip_filter
,
1394 LLVMValueRef
*coords
,
1395 const LLVMValueRef
*offsets
,
1396 LLVMValueRef ilevel0
,
1397 LLVMValueRef ilevel1
,
1398 LLVMValueRef lod_fpart
,
1399 LLVMValueRef
*colors_out
)
1401 LLVMBuilderRef builder
= bld
->gallivm
->builder
;
1402 LLVMValueRef size0
= NULL
;
1403 LLVMValueRef size1
= NULL
;
1404 LLVMValueRef row_stride0_vec
= NULL
;
1405 LLVMValueRef row_stride1_vec
= NULL
;
1406 LLVMValueRef img_stride0_vec
= NULL
;
1407 LLVMValueRef img_stride1_vec
= NULL
;
1408 LLVMValueRef data_ptr0
= NULL
;
1409 LLVMValueRef data_ptr1
= NULL
;
1410 LLVMValueRef mipoff0
= NULL
;
1411 LLVMValueRef mipoff1
= NULL
;
1412 LLVMValueRef colors0
[4], colors1
[4];
1415 /* sample the first mipmap level */
1416 lp_build_mipmap_level_sizes(bld
, ilevel0
,
1418 &row_stride0_vec
, &img_stride0_vec
);
1419 if (bld
->num_mips
== 1) {
1420 data_ptr0
= lp_build_get_mipmap_level(bld
, ilevel0
);
1423 /* This path should work for num_lods 1 too but slightly less efficient */
1424 data_ptr0
= bld
->base_ptr
;
1425 mipoff0
= lp_build_get_mip_offsets(bld
, ilevel0
);
1427 if (img_filter
== PIPE_TEX_FILTER_NEAREST
) {
1428 lp_build_sample_image_nearest(bld
, size0
,
1429 row_stride0_vec
, img_stride0_vec
,
1430 data_ptr0
, mipoff0
, coords
, offsets
,
1434 assert(img_filter
== PIPE_TEX_FILTER_LINEAR
);
1435 lp_build_sample_image_linear(bld
, size0
, NULL
,
1436 row_stride0_vec
, img_stride0_vec
,
1437 data_ptr0
, mipoff0
, coords
, offsets
,
1441 /* Store the first level's colors in the output variables */
1442 for (chan
= 0; chan
< 4; chan
++) {
1443 LLVMBuildStore(builder
, colors0
[chan
], colors_out
[chan
]);
1446 if (mip_filter
== PIPE_TEX_MIPFILTER_LINEAR
) {
1447 struct lp_build_if_state if_ctx
;
1448 LLVMValueRef need_lerp
;
1450 /* need_lerp = lod_fpart > 0 */
1451 if (bld
->num_lods
== 1) {
1452 need_lerp
= LLVMBuildFCmp(builder
, LLVMRealUGT
,
1453 lod_fpart
, bld
->lodf_bld
.zero
,
1458 * We'll do mip filtering if any of the quads (or individual
1459 * pixel in case of per-pixel lod) need it.
1460 * It might be better to split the vectors here and only fetch/filter
1461 * quads which need it (if there's one lod per quad).
1463 need_lerp
= lp_build_compare(bld
->gallivm
, bld
->lodf_bld
.type
,
1465 lod_fpart
, bld
->lodf_bld
.zero
);
1466 need_lerp
= lp_build_any_true_range(&bld
->lodi_bld
, bld
->num_lods
, need_lerp
);
1469 lp_build_if(&if_ctx
, bld
->gallivm
, need_lerp
);
1472 * We unfortunately need to clamp lod_fpart here since we can get
1473 * negative values which would screw up filtering if not all
1474 * lod_fpart values have same sign.
1476 lod_fpart
= lp_build_max(&bld
->lodf_bld
, lod_fpart
,
1477 bld
->lodf_bld
.zero
);
1478 /* sample the second mipmap level */
1479 lp_build_mipmap_level_sizes(bld
, ilevel1
,
1481 &row_stride1_vec
, &img_stride1_vec
);
1482 if (bld
->num_mips
== 1) {
1483 data_ptr1
= lp_build_get_mipmap_level(bld
, ilevel1
);
1486 data_ptr1
= bld
->base_ptr
;
1487 mipoff1
= lp_build_get_mip_offsets(bld
, ilevel1
);
1489 if (img_filter
== PIPE_TEX_FILTER_NEAREST
) {
1490 lp_build_sample_image_nearest(bld
, size1
,
1491 row_stride1_vec
, img_stride1_vec
,
1492 data_ptr1
, mipoff1
, coords
, offsets
,
1496 lp_build_sample_image_linear(bld
, size1
, NULL
,
1497 row_stride1_vec
, img_stride1_vec
,
1498 data_ptr1
, mipoff1
, coords
, offsets
,
1502 /* interpolate samples from the two mipmap levels */
1504 if (bld
->num_lods
!= bld
->coord_type
.length
)
1505 lod_fpart
= lp_build_unpack_broadcast_aos_scalars(bld
->gallivm
,
1507 bld
->texel_bld
.type
,
1510 for (chan
= 0; chan
< 4; chan
++) {
1511 colors0
[chan
] = lp_build_lerp(&bld
->texel_bld
, lod_fpart
,
1512 colors0
[chan
], colors1
[chan
],
1514 LLVMBuildStore(builder
, colors0
[chan
], colors_out
[chan
]);
1517 lp_build_endif(&if_ctx
);
1523 * Sample the texture/mipmap using given mip filter, and using
1524 * both nearest and linear filtering at the same time depending
1526 * lod can be per quad but linear_mask is always per pixel.
1527 * ilevel0 and ilevel1 indicate the two mipmap levels to sample
1528 * from (vectors or scalars).
1529 * If we're using nearest miplevel sampling the '1' values will be null/unused.
1532 lp_build_sample_mipmap_both(struct lp_build_sample_context
*bld
,
1533 LLVMValueRef linear_mask
,
1534 unsigned mip_filter
,
1535 LLVMValueRef
*coords
,
1536 const LLVMValueRef
*offsets
,
1537 LLVMValueRef ilevel0
,
1538 LLVMValueRef ilevel1
,
1539 LLVMValueRef lod_fpart
,
1540 LLVMValueRef lod_positive
,
1541 LLVMValueRef
*colors_out
)
1543 LLVMBuilderRef builder
= bld
->gallivm
->builder
;
1544 LLVMValueRef size0
= NULL
;
1545 LLVMValueRef size1
= NULL
;
1546 LLVMValueRef row_stride0_vec
= NULL
;
1547 LLVMValueRef row_stride1_vec
= NULL
;
1548 LLVMValueRef img_stride0_vec
= NULL
;
1549 LLVMValueRef img_stride1_vec
= NULL
;
1550 LLVMValueRef data_ptr0
= NULL
;
1551 LLVMValueRef data_ptr1
= NULL
;
1552 LLVMValueRef mipoff0
= NULL
;
1553 LLVMValueRef mipoff1
= NULL
;
1554 LLVMValueRef colors0
[4], colors1
[4];
1557 /* sample the first mipmap level */
1558 lp_build_mipmap_level_sizes(bld
, ilevel0
,
1560 &row_stride0_vec
, &img_stride0_vec
);
1561 if (bld
->num_mips
== 1) {
1562 data_ptr0
= lp_build_get_mipmap_level(bld
, ilevel0
);
1565 /* This path should work for num_lods 1 too but slightly less efficient */
1566 data_ptr0
= bld
->base_ptr
;
1567 mipoff0
= lp_build_get_mip_offsets(bld
, ilevel0
);
1570 lp_build_sample_image_linear(bld
, size0
, linear_mask
,
1571 row_stride0_vec
, img_stride0_vec
,
1572 data_ptr0
, mipoff0
, coords
, offsets
,
1575 /* Store the first level's colors in the output variables */
1576 for (chan
= 0; chan
< 4; chan
++) {
1577 LLVMBuildStore(builder
, colors0
[chan
], colors_out
[chan
]);
1580 if (mip_filter
== PIPE_TEX_MIPFILTER_LINEAR
) {
1581 struct lp_build_if_state if_ctx
;
1582 LLVMValueRef need_lerp
;
1585 * We'll do mip filtering if any of the quads (or individual
1586 * pixel in case of per-pixel lod) need it.
1587 * Note using lod_positive here not lod_fpart since it may be the same
1588 * condition as that used in the outer "if" in the caller hence llvm
1589 * should be able to merge the branches in this case.
1591 need_lerp
= lp_build_any_true_range(&bld
->lodi_bld
, bld
->num_lods
, lod_positive
);
1593 lp_build_if(&if_ctx
, bld
->gallivm
, need_lerp
);
1596 * We unfortunately need to clamp lod_fpart here since we can get
1597 * negative values which would screw up filtering if not all
1598 * lod_fpart values have same sign.
1600 lod_fpart
= lp_build_max(&bld
->lodf_bld
, lod_fpart
,
1601 bld
->lodf_bld
.zero
);
1602 /* sample the second mipmap level */
1603 lp_build_mipmap_level_sizes(bld
, ilevel1
,
1605 &row_stride1_vec
, &img_stride1_vec
);
1606 if (bld
->num_mips
== 1) {
1607 data_ptr1
= lp_build_get_mipmap_level(bld
, ilevel1
);
1610 data_ptr1
= bld
->base_ptr
;
1611 mipoff1
= lp_build_get_mip_offsets(bld
, ilevel1
);
1614 lp_build_sample_image_linear(bld
, size1
, linear_mask
,
1615 row_stride1_vec
, img_stride1_vec
,
1616 data_ptr1
, mipoff1
, coords
, offsets
,
1619 /* interpolate samples from the two mipmap levels */
1621 if (bld
->num_lods
!= bld
->coord_type
.length
)
1622 lod_fpart
= lp_build_unpack_broadcast_aos_scalars(bld
->gallivm
,
1624 bld
->texel_bld
.type
,
1627 for (chan
= 0; chan
< 4; chan
++) {
1628 colors0
[chan
] = lp_build_lerp(&bld
->texel_bld
, lod_fpart
,
1629 colors0
[chan
], colors1
[chan
],
1631 LLVMBuildStore(builder
, colors0
[chan
], colors_out
[chan
]);
1634 lp_build_endif(&if_ctx
);
1640 * Build (per-coord) layer value.
1641 * Either clamp layer to valid values or fill in optional out_of_bounds
1642 * value and just return value unclamped.
1645 lp_build_layer_coord(struct lp_build_sample_context
*bld
,
1646 unsigned texture_unit
,
1648 LLVMValueRef
*out_of_bounds
)
1650 LLVMValueRef num_layers
;
1651 struct lp_build_context
*int_coord_bld
= &bld
->int_coord_bld
;
1653 num_layers
= bld
->dynamic_state
->depth(bld
->dynamic_state
,
1654 bld
->gallivm
, texture_unit
);
1656 if (out_of_bounds
) {
1657 LLVMValueRef out1
, out
;
1658 num_layers
= lp_build_broadcast_scalar(int_coord_bld
, num_layers
);
1659 out
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_LESS
, layer
, int_coord_bld
->zero
);
1660 out1
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_GEQUAL
, layer
, num_layers
);
1661 *out_of_bounds
= lp_build_or(int_coord_bld
, out
, out1
);
1665 LLVMValueRef maxlayer
;
1666 maxlayer
= lp_build_sub(&bld
->int_bld
, num_layers
, bld
->int_bld
.one
);
1667 maxlayer
= lp_build_broadcast_scalar(int_coord_bld
, maxlayer
);
1668 return lp_build_clamp(int_coord_bld
, layer
, int_coord_bld
->zero
, maxlayer
);
1674 * Calculate cube face, lod, mip levels.
1677 lp_build_sample_common(struct lp_build_sample_context
*bld
,
1678 unsigned texture_index
,
1679 unsigned sampler_index
,
1680 LLVMValueRef
*coords
,
1681 const struct lp_derivatives
*derivs
, /* optional */
1682 LLVMValueRef lod_bias
, /* optional */
1683 LLVMValueRef explicit_lod
, /* optional */
1684 LLVMValueRef
*lod_pos_or_zero
,
1685 LLVMValueRef
*lod_fpart
,
1686 LLVMValueRef
*ilevel0
,
1687 LLVMValueRef
*ilevel1
)
1689 const unsigned mip_filter
= bld
->static_sampler_state
->min_mip_filter
;
1690 const unsigned min_filter
= bld
->static_sampler_state
->min_img_filter
;
1691 const unsigned mag_filter
= bld
->static_sampler_state
->mag_img_filter
;
1692 const unsigned target
= bld
->static_texture_state
->target
;
1693 LLVMValueRef first_level
, cube_rho
= NULL
;
1694 LLVMValueRef lod_ipart
= NULL
;
1695 struct lp_derivatives cube_derivs
;
1698 printf("%s mip %d min %d mag %d\n", __FUNCTION__,
1699 mip_filter, min_filter, mag_filter);
1703 * Choose cube face, recompute texcoords for the chosen face and
1704 * compute rho here too (as it requires transform of derivatives).
1706 if (target
== PIPE_TEXTURE_CUBE
) {
1707 boolean need_derivs
;
1708 need_derivs
= ((min_filter
!= mag_filter
||
1709 mip_filter
!= PIPE_TEX_MIPFILTER_NONE
) &&
1710 !bld
->static_sampler_state
->min_max_lod_equal
&&
1712 lp_build_cube_lookup(bld
, coords
, derivs
, &cube_rho
, &cube_derivs
, need_derivs
);
1713 derivs
= &cube_derivs
;
1715 else if (target
== PIPE_TEXTURE_1D_ARRAY
||
1716 target
== PIPE_TEXTURE_2D_ARRAY
) {
1717 coords
[2] = lp_build_iround(&bld
->coord_bld
, coords
[2]);
1718 coords
[2] = lp_build_layer_coord(bld
, texture_index
, coords
[2], NULL
);
1721 if (bld
->static_sampler_state
->compare_mode
!= PIPE_TEX_COMPARE_NONE
) {
1723 * Clamp p coords to [0,1] for fixed function depth texture format here.
1724 * Technically this is not entirely correct for unorm depth as the ref value
1725 * should be converted to the depth format (quantization!) and comparison
1726 * then done in texture format. This would actually help performance (since
1727 * only need to do it once and could save the per-sample conversion of texels
1728 * to floats instead), but it would need more messy code (would need to push
1729 * at least some bits down to actual fetch so conversion could be skipped,
1730 * and would have ugly interaction with border color, would need to convert
1731 * border color to that format too or do some other tricks to make it work).
1733 const struct util_format_description
*format_desc
= bld
->format_desc
;
1735 /* not entirely sure we couldn't end up with non-valid swizzle here */
1736 chan_type
= format_desc
->swizzle
[0] <= UTIL_FORMAT_SWIZZLE_W
?
1737 format_desc
->channel
[format_desc
->swizzle
[0]].type
:
1738 UTIL_FORMAT_TYPE_FLOAT
;
1739 if (chan_type
!= UTIL_FORMAT_TYPE_FLOAT
) {
1740 coords
[4] = lp_build_clamp(&bld
->coord_bld
, coords
[4],
1741 bld
->coord_bld
.zero
, bld
->coord_bld
.one
);
1746 * Compute the level of detail (float).
1748 if (min_filter
!= mag_filter
||
1749 mip_filter
!= PIPE_TEX_MIPFILTER_NONE
) {
1750 /* Need to compute lod either to choose mipmap levels or to
1751 * distinguish between minification/magnification with one mipmap level.
1753 lp_build_lod_selector(bld
, texture_index
, sampler_index
,
1754 coords
[0], coords
[1], coords
[2], cube_rho
,
1755 derivs
, lod_bias
, explicit_lod
,
1757 &lod_ipart
, lod_fpart
, lod_pos_or_zero
);
1759 lod_ipart
= bld
->lodi_bld
.zero
;
1760 *lod_pos_or_zero
= bld
->lodi_bld
.zero
;
1763 if (bld
->num_lods
!= bld
->num_mips
) {
1764 /* only makes sense if there's just a single mip level */
1765 assert(bld
->num_mips
== 1);
1766 lod_ipart
= lp_build_extract_range(bld
->gallivm
, lod_ipart
, 0, 1);
1770 * Compute integer mipmap level(s) to fetch texels from: ilevel0, ilevel1
1772 switch (mip_filter
) {
1774 assert(0 && "bad mip_filter value in lp_build_sample_soa()");
1776 case PIPE_TEX_MIPFILTER_NONE
:
1777 /* always use mip level 0 */
1778 first_level
= bld
->dynamic_state
->first_level(bld
->dynamic_state
,
1779 bld
->gallivm
, texture_index
);
1780 first_level
= lp_build_broadcast_scalar(&bld
->leveli_bld
, first_level
);
1781 *ilevel0
= first_level
;
1783 case PIPE_TEX_MIPFILTER_NEAREST
:
1785 lp_build_nearest_mip_level(bld
, texture_index
, lod_ipart
, ilevel0
, NULL
);
1787 case PIPE_TEX_MIPFILTER_LINEAR
:
1790 lp_build_linear_mip_levels(bld
, texture_index
,
1791 lod_ipart
, lod_fpart
,
1798 lp_build_clamp_border_color(struct lp_build_sample_context
*bld
,
1799 unsigned sampler_unit
)
1801 struct gallivm_state
*gallivm
= bld
->gallivm
;
1802 LLVMBuilderRef builder
= gallivm
->builder
;
1803 LLVMValueRef border_color_ptr
=
1804 bld
->dynamic_state
->border_color(bld
->dynamic_state
,
1805 gallivm
, sampler_unit
);
1806 LLVMValueRef border_color
;
1807 const struct util_format_description
*format_desc
= bld
->format_desc
;
1808 struct lp_type vec4_type
= bld
->texel_type
;
1809 struct lp_build_context vec4_bld
;
1810 LLVMValueRef min_clamp
= NULL
;
1811 LLVMValueRef max_clamp
= NULL
;
1814 * For normalized format need to clamp border color (technically
1815 * probably should also quantize the data). Really sucks doing this
1816 * here but can't avoid at least for now since this is part of
1817 * sampler state and texture format is part of sampler_view state.
1818 * GL expects also expects clamping for uint/sint formats too so
1819 * do that as well (d3d10 can't end up here with uint/sint since it
1820 * only supports them with ld).
1822 vec4_type
.length
= 4;
1823 lp_build_context_init(&vec4_bld
, gallivm
, vec4_type
);
1826 * Vectorized clamping of border color. Loading is a bit of a hack since
1827 * we just cast the pointer to float array to pointer to vec4
1830 border_color_ptr
= lp_build_array_get_ptr(gallivm
, border_color_ptr
,
1831 lp_build_const_int32(gallivm
, 0));
1832 border_color_ptr
= LLVMBuildBitCast(builder
, border_color_ptr
,
1833 LLVMPointerType(vec4_bld
.vec_type
, 0), "");
1834 border_color
= LLVMBuildLoad(builder
, border_color_ptr
, "");
1835 /* we don't have aligned type in the dynamic state unfortunately */
1836 lp_set_load_alignment(border_color
, 4);
1839 * Instead of having some incredibly complex logic which will try to figure out
1840 * clamping necessary for each channel, simply use the first channel, and treat
1841 * mixed signed/unsigned normalized formats specially.
1842 * (Mixed non-normalized, which wouldn't work at all here, do not exist for a
1845 if (format_desc
->layout
== UTIL_FORMAT_LAYOUT_PLAIN
) {
1847 /* d/s needs special handling because both present means just sampling depth */
1848 if (util_format_is_depth_and_stencil(format_desc
->format
)) {
1849 chan
= format_desc
->swizzle
[0];
1852 chan
= util_format_get_first_non_void_channel(format_desc
->format
);
1854 if (chan
>= 0 && chan
<= UTIL_FORMAT_SWIZZLE_W
) {
1855 unsigned chan_type
= format_desc
->channel
[chan
].type
;
1856 unsigned chan_norm
= format_desc
->channel
[chan
].normalized
;
1857 unsigned chan_pure
= format_desc
->channel
[chan
].pure_integer
;
1858 if (chan_type
== UTIL_FORMAT_TYPE_SIGNED
) {
1860 min_clamp
= lp_build_const_vec(gallivm
, vec4_type
, -1.0F
);
1861 max_clamp
= vec4_bld
.one
;
1863 else if (chan_pure
) {
1865 * Border color was stored as int, hence need min/max clamp
1866 * only if chan has less than 32 bits..
1868 unsigned chan_size
= format_desc
->channel
[chan
].size
;
1869 if (chan_size
< 32) {
1870 min_clamp
= lp_build_const_int_vec(gallivm
, vec4_type
,
1871 0 - (1 << (chan_size
- 1)));
1872 max_clamp
= lp_build_const_int_vec(gallivm
, vec4_type
,
1873 (1 << (chan_size
- 1)) - 1);
1876 /* TODO: no idea about non-pure, non-normalized! */
1878 else if (chan_type
== UTIL_FORMAT_TYPE_UNSIGNED
) {
1880 min_clamp
= vec4_bld
.zero
;
1881 max_clamp
= vec4_bld
.one
;
1884 * Need a ugly hack here, because we don't have Z32_FLOAT_X8X24
1885 * we use Z32_FLOAT_S8X24 to imply sampling depth component
1886 * and ignoring stencil, which will blow up here if we try to
1887 * do a uint clamp in a float texel build...
1888 * And even if we had that format, mesa st also thinks using z24s8
1889 * means depth sampling ignoring stencil.
1891 else if (chan_pure
) {
1893 * Border color was stored as uint, hence never need min
1894 * clamp, and only need max clamp if chan has less than 32 bits.
1896 unsigned chan_size
= format_desc
->channel
[chan
].size
;
1897 if (chan_size
< 32) {
1898 max_clamp
= lp_build_const_int_vec(gallivm
, vec4_type
,
1899 (1 << chan_size
) - 1);
1901 /* TODO: no idea about non-pure, non-normalized! */
1904 else if (chan_type
== UTIL_FORMAT_TYPE_FIXED
) {
1905 /* TODO: I have no idea what clamp this would need if any! */
1908 /* mixed plain formats (or different pure size) */
1909 switch (format_desc
->format
) {
1910 case PIPE_FORMAT_B10G10R10A2_UINT
:
1911 case PIPE_FORMAT_R10G10B10A2_UINT
:
1913 unsigned max10
= (1 << 10) - 1;
1914 max_clamp
= lp_build_const_aos(gallivm
, vec4_type
, max10
, max10
,
1915 max10
, (1 << 2) - 1, NULL
);
1918 case PIPE_FORMAT_R10SG10SB10SA2U_NORM
:
1919 min_clamp
= lp_build_const_aos(gallivm
, vec4_type
, -1.0F
, -1.0F
,
1921 max_clamp
= vec4_bld
.one
;
1923 case PIPE_FORMAT_R8SG8SB8UX8U_NORM
:
1924 case PIPE_FORMAT_R5SG5SB6U_NORM
:
1925 min_clamp
= lp_build_const_aos(gallivm
, vec4_type
, -1.0F
, -1.0F
,
1927 max_clamp
= vec4_bld
.one
;
1934 /* cannot figure this out from format description */
1935 if (format_desc
->layout
== UTIL_FORMAT_LAYOUT_S3TC
) {
1936 /* s3tc formats are always unorm */
1937 min_clamp
= vec4_bld
.zero
;
1938 max_clamp
= vec4_bld
.one
;
1940 else if (format_desc
->layout
== UTIL_FORMAT_LAYOUT_RGTC
||
1941 format_desc
->layout
== UTIL_FORMAT_LAYOUT_ETC
) {
1942 switch (format_desc
->format
) {
1943 case PIPE_FORMAT_RGTC1_UNORM
:
1944 case PIPE_FORMAT_RGTC2_UNORM
:
1945 case PIPE_FORMAT_LATC1_UNORM
:
1946 case PIPE_FORMAT_LATC2_UNORM
:
1947 case PIPE_FORMAT_ETC1_RGB8
:
1948 min_clamp
= vec4_bld
.zero
;
1949 max_clamp
= vec4_bld
.one
;
1951 case PIPE_FORMAT_RGTC1_SNORM
:
1952 case PIPE_FORMAT_RGTC2_SNORM
:
1953 case PIPE_FORMAT_LATC1_SNORM
:
1954 case PIPE_FORMAT_LATC2_SNORM
:
1955 min_clamp
= lp_build_const_vec(gallivm
, vec4_type
, -1.0F
);
1956 max_clamp
= vec4_bld
.one
;
1964 * all others from subsampled/other group, though we don't care
1965 * about yuv (and should not have any from zs here)
1967 else if (format_desc
->colorspace
!= UTIL_FORMAT_COLORSPACE_YUV
){
1968 switch (format_desc
->format
) {
1969 case PIPE_FORMAT_R8G8_B8G8_UNORM
:
1970 case PIPE_FORMAT_G8R8_G8B8_UNORM
:
1971 case PIPE_FORMAT_G8R8_B8R8_UNORM
:
1972 case PIPE_FORMAT_R8G8_R8B8_UNORM
:
1973 case PIPE_FORMAT_R1_UNORM
: /* doesn't make sense but ah well */
1974 min_clamp
= vec4_bld
.zero
;
1975 max_clamp
= vec4_bld
.one
;
1977 case PIPE_FORMAT_R8G8Bx_SNORM
:
1978 min_clamp
= lp_build_const_vec(gallivm
, vec4_type
, -1.0F
);
1979 max_clamp
= vec4_bld
.one
;
1982 * Note smallfloat formats usually don't need clamping
1983 * (they still have infinite range) however this is not
1984 * true for r11g11b10 and r9g9b9e5, which can't represent
1985 * negative numbers (and additionally r9g9b9e5 can't represent
1986 * very large numbers). d3d10 seems happy without clamping in
1987 * this case, but gl spec is pretty clear: "for floating
1988 * point and integer formats, border values are clamped to
1989 * the representable range of the format" so do that here.
1991 case PIPE_FORMAT_R11G11B10_FLOAT
:
1992 min_clamp
= vec4_bld
.zero
;
1994 case PIPE_FORMAT_R9G9B9E5_FLOAT
:
1995 min_clamp
= vec4_bld
.zero
;
1996 max_clamp
= lp_build_const_vec(gallivm
, vec4_type
, MAX_RGB9E5
);
2006 border_color
= lp_build_max(&vec4_bld
, border_color
, min_clamp
);
2009 border_color
= lp_build_min(&vec4_bld
, border_color
, max_clamp
);
2012 bld
->border_color_clamped
= border_color
;
2017 * General texture sampling codegen.
2018 * This function handles texture sampling for all texture targets (1D,
2019 * 2D, 3D, cube) and all filtering modes.
2022 lp_build_sample_general(struct lp_build_sample_context
*bld
,
2023 unsigned sampler_unit
,
2024 LLVMValueRef
*coords
,
2025 const LLVMValueRef
*offsets
,
2026 LLVMValueRef lod_positive
,
2027 LLVMValueRef lod_fpart
,
2028 LLVMValueRef ilevel0
,
2029 LLVMValueRef ilevel1
,
2030 LLVMValueRef
*colors_out
)
2032 LLVMBuilderRef builder
= bld
->gallivm
->builder
;
2033 const struct lp_static_sampler_state
*sampler_state
= bld
->static_sampler_state
;
2034 const unsigned mip_filter
= sampler_state
->min_mip_filter
;
2035 const unsigned min_filter
= sampler_state
->min_img_filter
;
2036 const unsigned mag_filter
= sampler_state
->mag_img_filter
;
2037 LLVMValueRef texels
[4];
2040 /* if we need border color, (potentially) clamp it now */
2041 if (lp_sampler_wrap_mode_uses_border_color(sampler_state
->wrap_s
,
2045 lp_sampler_wrap_mode_uses_border_color(sampler_state
->wrap_t
,
2049 lp_sampler_wrap_mode_uses_border_color(sampler_state
->wrap_r
,
2052 lp_build_clamp_border_color(bld
, sampler_unit
);
2057 * Get/interpolate texture colors.
2060 for (chan
= 0; chan
< 4; ++chan
) {
2061 texels
[chan
] = lp_build_alloca(bld
->gallivm
, bld
->texel_bld
.vec_type
, "");
2062 lp_build_name(texels
[chan
], "sampler%u_texel_%c_var", sampler_unit
, "xyzw"[chan
]);
2065 if (min_filter
== mag_filter
) {
2066 /* no need to distinguish between minification and magnification */
2067 lp_build_sample_mipmap(bld
, min_filter
, mip_filter
,
2069 ilevel0
, ilevel1
, lod_fpart
,
2074 * Could also get rid of the if-logic and always use mipmap_both, both
2075 * for the single lod and multi-lod case if nothing really uses this.
2077 if (bld
->num_lods
== 1) {
2078 /* Emit conditional to choose min image filter or mag image filter
2079 * depending on the lod being > 0 or <= 0, respectively.
2081 struct lp_build_if_state if_ctx
;
2083 lod_positive
= LLVMBuildTrunc(builder
, lod_positive
,
2084 LLVMInt1TypeInContext(bld
->gallivm
->context
), "");
2086 lp_build_if(&if_ctx
, bld
->gallivm
, lod_positive
);
2088 /* Use the minification filter */
2089 lp_build_sample_mipmap(bld
, min_filter
, mip_filter
,
2091 ilevel0
, ilevel1
, lod_fpart
,
2094 lp_build_else(&if_ctx
);
2096 /* Use the magnification filter */
2097 lp_build_sample_mipmap(bld
, mag_filter
, PIPE_TEX_MIPFILTER_NONE
,
2099 ilevel0
, NULL
, NULL
,
2102 lp_build_endif(&if_ctx
);
2105 LLVMValueRef need_linear
, linear_mask
;
2106 unsigned mip_filter_for_nearest
;
2107 struct lp_build_if_state if_ctx
;
2109 if (min_filter
== PIPE_TEX_FILTER_LINEAR
) {
2110 linear_mask
= lod_positive
;
2111 mip_filter_for_nearest
= PIPE_TEX_MIPFILTER_NONE
;
2114 linear_mask
= lp_build_not(&bld
->lodi_bld
, lod_positive
);
2115 mip_filter_for_nearest
= mip_filter
;
2117 need_linear
= lp_build_any_true_range(&bld
->lodi_bld
, bld
->num_lods
,
2120 if (bld
->num_lods
!= bld
->coord_type
.length
) {
2121 linear_mask
= lp_build_unpack_broadcast_aos_scalars(bld
->gallivm
,
2123 bld
->int_coord_type
,
2127 lp_build_if(&if_ctx
, bld
->gallivm
, need_linear
);
2130 * Do sampling with both filters simultaneously. This means using
2131 * a linear filter and doing some tricks (with weights) for the pixels
2132 * which need nearest filter.
2133 * Note that it's probably rare some pixels need nearest and some
2134 * linear filter but the fixups required for the nearest pixels
2135 * aren't all that complicated so just always run a combined path
2136 * if at least some pixels require linear.
2138 lp_build_sample_mipmap_both(bld
, linear_mask
, mip_filter
,
2141 lod_fpart
, lod_positive
,
2144 lp_build_else(&if_ctx
);
2147 * All pixels require just nearest filtering, which is way
2148 * cheaper than linear, hence do a separate path for that.
2150 lp_build_sample_mipmap(bld
, PIPE_TEX_FILTER_NEAREST
,
2151 mip_filter_for_nearest
,
2153 ilevel0
, ilevel1
, lod_fpart
,
2156 lp_build_endif(&if_ctx
);
2160 for (chan
= 0; chan
< 4; ++chan
) {
2161 colors_out
[chan
] = LLVMBuildLoad(builder
, texels
[chan
], "");
2162 lp_build_name(colors_out
[chan
], "sampler%u_texel_%c", sampler_unit
, "xyzw"[chan
]);
2168 * Texel fetch function.
2169 * In contrast to general sampling there is no filtering, no coord minification,
2170 * lod (if any) is always explicit uint, coords are uints (in terms of texel units)
2171 * directly to be applied to the selected mip level (after adding texel offsets).
2172 * This function handles texel fetch for all targets where texel fetch is supported
2173 * (no cube maps, but 1d, 2d, 3d are supported, arrays and buffers should be too).
2176 lp_build_fetch_texel(struct lp_build_sample_context
*bld
,
2177 unsigned texture_unit
,
2178 const LLVMValueRef
*coords
,
2179 LLVMValueRef explicit_lod
,
2180 const LLVMValueRef
*offsets
,
2181 LLVMValueRef
*colors_out
)
2183 struct lp_build_context
*perquadi_bld
= &bld
->lodi_bld
;
2184 struct lp_build_context
*int_coord_bld
= &bld
->int_coord_bld
;
2185 unsigned dims
= bld
->dims
, chan
;
2186 unsigned target
= bld
->static_texture_state
->target
;
2187 boolean out_of_bound_ret_zero
= TRUE
;
2188 LLVMValueRef size
, ilevel
;
2189 LLVMValueRef row_stride_vec
= NULL
, img_stride_vec
= NULL
;
2190 LLVMValueRef x
= coords
[0], y
= coords
[1], z
= coords
[2];
2191 LLVMValueRef width
, height
, depth
, i
, j
;
2192 LLVMValueRef offset
, out_of_bounds
, out1
;
2194 out_of_bounds
= int_coord_bld
->zero
;
2196 if (explicit_lod
&& bld
->static_texture_state
->target
!= PIPE_BUFFER
) {
2197 if (bld
->num_mips
!= int_coord_bld
->type
.length
) {
2198 ilevel
= lp_build_pack_aos_scalars(bld
->gallivm
, int_coord_bld
->type
,
2199 perquadi_bld
->type
, explicit_lod
, 0);
2202 ilevel
= explicit_lod
;
2204 lp_build_nearest_mip_level(bld
, texture_unit
, ilevel
, &ilevel
,
2205 out_of_bound_ret_zero
? &out_of_bounds
: NULL
);
2208 assert(bld
->num_mips
== 1);
2209 if (bld
->static_texture_state
->target
!= PIPE_BUFFER
) {
2210 ilevel
= bld
->dynamic_state
->first_level(bld
->dynamic_state
,
2211 bld
->gallivm
, texture_unit
);
2214 ilevel
= lp_build_const_int32(bld
->gallivm
, 0);
2217 lp_build_mipmap_level_sizes(bld
, ilevel
,
2219 &row_stride_vec
, &img_stride_vec
);
2220 lp_build_extract_image_sizes(bld
, &bld
->int_size_bld
, int_coord_bld
->type
,
2221 size
, &width
, &height
, &depth
);
2223 if (target
== PIPE_TEXTURE_1D_ARRAY
||
2224 target
== PIPE_TEXTURE_2D_ARRAY
) {
2225 if (out_of_bound_ret_zero
) {
2226 z
= lp_build_layer_coord(bld
, texture_unit
, z
, &out1
);
2227 out_of_bounds
= lp_build_or(int_coord_bld
, out_of_bounds
, out1
);
2230 z
= lp_build_layer_coord(bld
, texture_unit
, z
, NULL
);
2234 /* This is a lot like border sampling */
2237 * coords are really unsigned, offsets are signed, but I don't think
2238 * exceeding 31 bits is possible
2240 x
= lp_build_add(int_coord_bld
, x
, offsets
[0]);
2242 out1
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_LESS
, x
, int_coord_bld
->zero
);
2243 out_of_bounds
= lp_build_or(int_coord_bld
, out_of_bounds
, out1
);
2244 out1
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_GEQUAL
, x
, width
);
2245 out_of_bounds
= lp_build_or(int_coord_bld
, out_of_bounds
, out1
);
2249 y
= lp_build_add(int_coord_bld
, y
, offsets
[1]);
2251 out1
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_LESS
, y
, int_coord_bld
->zero
);
2252 out_of_bounds
= lp_build_or(int_coord_bld
, out_of_bounds
, out1
);
2253 out1
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_GEQUAL
, y
, height
);
2254 out_of_bounds
= lp_build_or(int_coord_bld
, out_of_bounds
, out1
);
2258 z
= lp_build_add(int_coord_bld
, z
, offsets
[2]);
2260 out1
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_LESS
, z
, int_coord_bld
->zero
);
2261 out_of_bounds
= lp_build_or(int_coord_bld
, out_of_bounds
, out1
);
2262 out1
= lp_build_cmp(int_coord_bld
, PIPE_FUNC_GEQUAL
, z
, depth
);
2263 out_of_bounds
= lp_build_or(int_coord_bld
, out_of_bounds
, out1
);
2267 lp_build_sample_offset(int_coord_bld
,
2269 x
, y
, z
, row_stride_vec
, img_stride_vec
,
2272 if (bld
->static_texture_state
->target
!= PIPE_BUFFER
) {
2273 offset
= lp_build_add(int_coord_bld
, offset
,
2274 lp_build_get_mip_offsets(bld
, ilevel
));
2277 offset
= lp_build_andnot(int_coord_bld
, offset
, out_of_bounds
);
2279 lp_build_fetch_rgba_soa(bld
->gallivm
,
2282 bld
->base_ptr
, offset
,
2286 if (out_of_bound_ret_zero
) {
2288 * Only needed for ARB_robust_buffer_access_behavior and d3d10.
2289 * Could use min/max above instead of out-of-bounds comparisons
2290 * if we don't care about the result returned for out-of-bounds.
2292 for (chan
= 0; chan
< 4; chan
++) {
2293 colors_out
[chan
] = lp_build_select(&bld
->texel_bld
, out_of_bounds
,
2294 bld
->texel_bld
.zero
, colors_out
[chan
]);
2301 * Just set texels to white instead of actually sampling the texture.
2305 lp_build_sample_nop(struct gallivm_state
*gallivm
,
2306 struct lp_type type
,
2307 const LLVMValueRef
*coords
,
2308 LLVMValueRef texel_out
[4])
2310 LLVMValueRef one
= lp_build_one(gallivm
, type
);
2313 for (chan
= 0; chan
< 4; chan
++) {
2314 texel_out
[chan
] = one
;
2320 * Build texture sampling code.
2321 * 'texel' will return a vector of four LLVMValueRefs corresponding to
2323 * \param type vector float type to use for coords, etc.
2324 * \param is_fetch if this is a texel fetch instruction.
2325 * \param derivs partial derivatives of (s,t,r,q) with respect to x and y
2328 lp_build_sample_soa(struct gallivm_state
*gallivm
,
2329 const struct lp_static_texture_state
*static_texture_state
,
2330 const struct lp_static_sampler_state
*static_sampler_state
,
2331 struct lp_sampler_dynamic_state
*dynamic_state
,
2332 struct lp_type type
,
2334 unsigned texture_index
,
2335 unsigned sampler_index
,
2336 const LLVMValueRef
*coords
,
2337 const LLVMValueRef
*offsets
,
2338 const struct lp_derivatives
*derivs
, /* optional */
2339 LLVMValueRef lod_bias
, /* optional */
2340 LLVMValueRef explicit_lod
, /* optional */
2341 enum lp_sampler_lod_property lod_property
,
2342 LLVMValueRef texel_out
[4])
2344 unsigned target
= static_texture_state
->target
;
2345 unsigned dims
= texture_dims(target
);
2346 unsigned num_quads
= type
.length
/ 4;
2347 unsigned mip_filter
, min_img_filter
, mag_img_filter
, i
;
2348 struct lp_build_sample_context bld
;
2349 struct lp_static_sampler_state derived_sampler_state
= *static_sampler_state
;
2350 LLVMTypeRef i32t
= LLVMInt32TypeInContext(gallivm
->context
);
2351 LLVMBuilderRef builder
= gallivm
->builder
;
2352 LLVMValueRef tex_width
, newcoords
[5];
2355 enum pipe_format fmt
= static_texture_state
->format
;
2356 debug_printf("Sample from %s\n", util_format_name(fmt
));
2359 if (static_texture_state
->format
== PIPE_FORMAT_NONE
) {
2361 * If there's nothing bound, format is NONE, and we must return
2362 * all zero as mandated by d3d10 in this case.
2365 LLVMValueRef zero
= lp_build_const_vec(gallivm
, type
, 0.0F
);
2366 for (chan
= 0; chan
< 4; chan
++) {
2367 texel_out
[chan
] = zero
;
2372 assert(type
.floating
);
2374 /* Setup our build context */
2375 memset(&bld
, 0, sizeof bld
);
2376 bld
.gallivm
= gallivm
;
2377 bld
.static_sampler_state
= &derived_sampler_state
;
2378 bld
.static_texture_state
= static_texture_state
;
2379 bld
.dynamic_state
= dynamic_state
;
2380 bld
.format_desc
= util_format_description(static_texture_state
->format
);
2383 bld
.vector_width
= lp_type_width(type
);
2385 bld
.float_type
= lp_type_float(32);
2386 bld
.int_type
= lp_type_int(32);
2387 bld
.coord_type
= type
;
2388 bld
.int_coord_type
= lp_int_type(type
);
2389 bld
.float_size_in_type
= lp_type_float(32);
2390 bld
.float_size_in_type
.length
= dims
> 1 ? 4 : 1;
2391 bld
.int_size_in_type
= lp_int_type(bld
.float_size_in_type
);
2392 bld
.texel_type
= type
;
2394 /* always using the first channel hopefully should be safe,
2395 * if not things WILL break in other places anyway.
2397 if (bld
.format_desc
->colorspace
== UTIL_FORMAT_COLORSPACE_RGB
&&
2398 bld
.format_desc
->channel
[0].pure_integer
) {
2399 if (bld
.format_desc
->channel
[0].type
== UTIL_FORMAT_TYPE_SIGNED
) {
2400 bld
.texel_type
= lp_type_int_vec(type
.width
, type
.width
* type
.length
);
2402 else if (bld
.format_desc
->channel
[0].type
== UTIL_FORMAT_TYPE_UNSIGNED
) {
2403 bld
.texel_type
= lp_type_uint_vec(type
.width
, type
.width
* type
.length
);
2406 else if (util_format_has_stencil(bld
.format_desc
) &&
2407 !util_format_has_depth(bld
.format_desc
)) {
2408 /* for stencil only formats, sample stencil (uint) */
2409 bld
.texel_type
= lp_type_int_vec(type
.width
, type
.width
* type
.length
);
2412 if (!static_texture_state
->level_zero_only
) {
2413 derived_sampler_state
.min_mip_filter
= static_sampler_state
->min_mip_filter
;
2415 derived_sampler_state
.min_mip_filter
= PIPE_TEX_MIPFILTER_NONE
;
2417 mip_filter
= derived_sampler_state
.min_mip_filter
;
2420 debug_printf(" .min_mip_filter = %u\n", derived_sampler_state
.min_mip_filter
);
2423 if (static_texture_state
->target
== PIPE_TEXTURE_CUBE
||
2424 static_texture_state
->target
== PIPE_TEXTURE_CUBE_ARRAY
)
2427 * Seamless filtering ignores wrap modes.
2428 * Setting to CLAMP_TO_EDGE is correct for nearest filtering, for
2429 * bilinear it's not correct but way better than using for instance repeat.
2430 * Note we even set this for non-seamless. Technically GL allows any wrap
2431 * mode, which made sense when supporting true borders (can get seamless
2432 * effect with border and CLAMP_TO_BORDER), but gallium doesn't support
2433 * borders and d3d9 requires wrap modes to be ignored and it's a pain to fix
2434 * up the sampler state (as it makes it texture dependent).
2436 derived_sampler_state
.wrap_s
= PIPE_TEX_WRAP_CLAMP_TO_EDGE
;
2437 derived_sampler_state
.wrap_t
= PIPE_TEX_WRAP_CLAMP_TO_EDGE
;
2440 min_img_filter
= derived_sampler_state
.min_img_filter
;
2441 mag_img_filter
= derived_sampler_state
.mag_img_filter
;
2445 * This is all a bit complicated different paths are chosen for performance
2447 * Essentially, there can be 1 lod per element, 1 lod per quad or 1 lod for
2448 * everything (the last two options are equivalent for 4-wide case).
2449 * If there's per-quad lod but we split to 4-wide so we can use AoS, per-quad
2450 * lod is calculated then the lod value extracted afterwards so making this
2451 * case basically the same as far as lod handling is concerned for the
2452 * further sample/filter code as the 1 lod for everything case.
2453 * Different lod handling mostly shows up when building mipmap sizes
2454 * (lp_build_mipmap_level_sizes() and friends) and also in filtering
2455 * (getting the fractional part of the lod to the right texels).
2459 * There are other situations where at least the multiple int lods could be
2460 * avoided like min and max lod being equal.
2462 bld
.num_mips
= bld
.num_lods
= 1;
2464 if ((gallivm_debug
& GALLIVM_DEBUG_NO_QUAD_LOD
) &&
2465 (gallivm_debug
& GALLIVM_DEBUG_NO_RHO_APPROX
) &&
2466 (static_texture_state
->target
== PIPE_TEXTURE_CUBE
) &&
2467 (!is_fetch
&& mip_filter
!= PIPE_TEX_MIPFILTER_NONE
)) {
2469 * special case for using per-pixel lod even for implicit lod,
2470 * which is generally never required (ok by APIs) except to please
2471 * some (somewhat broken imho) tests (because per-pixel face selection
2472 * can cause derivatives to be different for pixels outside the primitive
2473 * due to the major axis division even if pre-project derivatives are
2476 bld
.num_mips
= type
.length
;
2477 bld
.num_lods
= type
.length
;
2479 else if (lod_property
== LP_SAMPLER_LOD_PER_ELEMENT
||
2480 (explicit_lod
|| lod_bias
|| derivs
)) {
2481 if ((is_fetch
&& target
!= PIPE_BUFFER
) ||
2482 (!is_fetch
&& mip_filter
!= PIPE_TEX_MIPFILTER_NONE
)) {
2483 bld
.num_mips
= type
.length
;
2484 bld
.num_lods
= type
.length
;
2486 else if (!is_fetch
&& min_img_filter
!= mag_img_filter
) {
2488 bld
.num_lods
= type
.length
;
2491 /* TODO: for true scalar_lod should only use 1 lod value */
2492 else if ((is_fetch
&& explicit_lod
&& target
!= PIPE_BUFFER
) ||
2493 (!is_fetch
&& mip_filter
!= PIPE_TEX_MIPFILTER_NONE
)) {
2494 bld
.num_mips
= num_quads
;
2495 bld
.num_lods
= num_quads
;
2497 else if (!is_fetch
&& min_img_filter
!= mag_img_filter
) {
2499 bld
.num_lods
= num_quads
;
2503 bld
.lodf_type
= type
;
2504 /* we want native vector size to be able to use our intrinsics */
2505 if (bld
.num_lods
!= type
.length
) {
2506 /* TODO: this currently always has to be per-quad or per-element */
2507 bld
.lodf_type
.length
= type
.length
> 4 ? ((type
.length
+ 15) / 16) * 4 : 1;
2509 bld
.lodi_type
= lp_int_type(bld
.lodf_type
);
2510 bld
.levelf_type
= bld
.lodf_type
;
2511 if (bld
.num_mips
== 1) {
2512 bld
.levelf_type
.length
= 1;
2514 bld
.leveli_type
= lp_int_type(bld
.levelf_type
);
2515 bld
.float_size_type
= bld
.float_size_in_type
;
2516 /* Note: size vectors may not be native. They contain minified w/h/d/_ values,
2517 * with per-element lod that is w0/h0/d0/_/w1/h1/d1_/... so up to 8x4f32 */
2518 if (bld
.num_mips
> 1) {
2519 bld
.float_size_type
.length
= bld
.num_mips
== type
.length
?
2520 bld
.num_mips
* bld
.float_size_in_type
.length
:
2523 bld
.int_size_type
= lp_int_type(bld
.float_size_type
);
2525 lp_build_context_init(&bld
.float_bld
, gallivm
, bld
.float_type
);
2526 lp_build_context_init(&bld
.float_vec_bld
, gallivm
, type
);
2527 lp_build_context_init(&bld
.int_bld
, gallivm
, bld
.int_type
);
2528 lp_build_context_init(&bld
.coord_bld
, gallivm
, bld
.coord_type
);
2529 lp_build_context_init(&bld
.int_coord_bld
, gallivm
, bld
.int_coord_type
);
2530 lp_build_context_init(&bld
.int_size_in_bld
, gallivm
, bld
.int_size_in_type
);
2531 lp_build_context_init(&bld
.float_size_in_bld
, gallivm
, bld
.float_size_in_type
);
2532 lp_build_context_init(&bld
.int_size_bld
, gallivm
, bld
.int_size_type
);
2533 lp_build_context_init(&bld
.float_size_bld
, gallivm
, bld
.float_size_type
);
2534 lp_build_context_init(&bld
.texel_bld
, gallivm
, bld
.texel_type
);
2535 lp_build_context_init(&bld
.levelf_bld
, gallivm
, bld
.levelf_type
);
2536 lp_build_context_init(&bld
.leveli_bld
, gallivm
, bld
.leveli_type
);
2537 lp_build_context_init(&bld
.lodf_bld
, gallivm
, bld
.lodf_type
);
2538 lp_build_context_init(&bld
.lodi_bld
, gallivm
, bld
.lodi_type
);
2540 /* Get the dynamic state */
2541 tex_width
= dynamic_state
->width(dynamic_state
, gallivm
, texture_index
);
2542 bld
.row_stride_array
= dynamic_state
->row_stride(dynamic_state
, gallivm
, texture_index
);
2543 bld
.img_stride_array
= dynamic_state
->img_stride(dynamic_state
, gallivm
, texture_index
);
2544 bld
.base_ptr
= dynamic_state
->base_ptr(dynamic_state
, gallivm
, texture_index
);
2545 bld
.mip_offsets
= dynamic_state
->mip_offsets(dynamic_state
, gallivm
, texture_index
);
2546 /* Note that mip_offsets is an array[level] of offsets to texture images */
2548 /* width, height, depth as single int vector */
2550 bld
.int_size
= tex_width
;
2553 bld
.int_size
= LLVMBuildInsertElement(builder
, bld
.int_size_in_bld
.undef
,
2554 tex_width
, LLVMConstInt(i32t
, 0, 0), "");
2556 LLVMValueRef tex_height
=
2557 dynamic_state
->height(dynamic_state
, gallivm
, texture_index
);
2558 bld
.int_size
= LLVMBuildInsertElement(builder
, bld
.int_size
,
2559 tex_height
, LLVMConstInt(i32t
, 1, 0), "");
2561 LLVMValueRef tex_depth
=
2562 dynamic_state
->depth(dynamic_state
, gallivm
, texture_index
);
2563 bld
.int_size
= LLVMBuildInsertElement(builder
, bld
.int_size
,
2564 tex_depth
, LLVMConstInt(i32t
, 2, 0), "");
2569 for (i
= 0; i
< 5; i
++) {
2570 newcoords
[i
] = coords
[i
];
2574 /* For debug: no-op texture sampling */
2575 lp_build_sample_nop(gallivm
,
2581 else if (is_fetch
) {
2582 lp_build_fetch_texel(&bld
, texture_index
, newcoords
,
2583 explicit_lod
, offsets
,
2588 LLVMValueRef lod_fpart
= NULL
, lod_positive
= NULL
;
2589 LLVMValueRef ilevel0
= NULL
, ilevel1
= NULL
;
2590 boolean use_aos
= util_format_fits_8unorm(bld
.format_desc
) &&
2591 /* not sure this is strictly needed or simply impossible */
2592 derived_sampler_state
.compare_mode
== PIPE_TEX_COMPARE_NONE
&&
2593 lp_is_simple_wrap_mode(derived_sampler_state
.wrap_s
);
2595 use_aos
&= bld
.num_lods
<= num_quads
||
2596 derived_sampler_state
.min_img_filter
==
2597 derived_sampler_state
.mag_img_filter
;
2599 use_aos
&= lp_is_simple_wrap_mode(derived_sampler_state
.wrap_t
);
2601 use_aos
&= lp_is_simple_wrap_mode(derived_sampler_state
.wrap_r
);
2604 if (static_texture_state
->target
== PIPE_TEXTURE_CUBE
&&
2605 derived_sampler_state
.seamless_cube_map
&&
2606 (derived_sampler_state
.min_img_filter
== PIPE_TEX_FILTER_LINEAR
||
2607 derived_sampler_state
.mag_img_filter
== PIPE_TEX_FILTER_LINEAR
)) {
2608 /* theoretically possible with AoS filtering but not implemented (complex!) */
2612 if ((gallivm_debug
& GALLIVM_DEBUG_PERF
) &&
2613 !use_aos
&& util_format_fits_8unorm(bld
.format_desc
)) {
2614 debug_printf("%s: using floating point linear filtering for %s\n",
2615 __FUNCTION__
, bld
.format_desc
->short_name
);
2616 debug_printf(" min_img %d mag_img %d mip %d target %d seamless %d"
2617 " wraps %d wrapt %d wrapr %d\n",
2618 derived_sampler_state
.min_img_filter
,
2619 derived_sampler_state
.mag_img_filter
,
2620 derived_sampler_state
.min_mip_filter
,
2621 static_texture_state
->target
,
2622 derived_sampler_state
.seamless_cube_map
,
2623 derived_sampler_state
.wrap_s
,
2624 derived_sampler_state
.wrap_t
,
2625 derived_sampler_state
.wrap_r
);
2628 lp_build_sample_common(&bld
, texture_index
, sampler_index
,
2630 derivs
, lod_bias
, explicit_lod
,
2631 &lod_positive
, &lod_fpart
,
2632 &ilevel0
, &ilevel1
);
2635 * we only try 8-wide sampling with soa as it appears to
2636 * be a loss with aos with AVX (but it should work, except
2637 * for conformance if min_filter != mag_filter if num_lods > 1).
2638 * (It should be faster if we'd support avx2)
2640 if (num_quads
== 1 || !use_aos
) {
2642 /* do sampling/filtering with fixed pt arithmetic */
2643 lp_build_sample_aos(&bld
, sampler_index
,
2644 newcoords
[0], newcoords
[1],
2646 offsets
, lod_positive
, lod_fpart
,
2652 lp_build_sample_general(&bld
, sampler_index
,
2654 lod_positive
, lod_fpart
,
2661 struct lp_build_sample_context bld4
;
2662 struct lp_type type4
= type
;
2664 LLVMValueRef texelout4
[4];
2665 LLVMValueRef texelouttmp
[4][LP_MAX_VECTOR_LENGTH
/16];
2669 /* Setup our build context */
2670 memset(&bld4
, 0, sizeof bld4
);
2671 bld4
.gallivm
= bld
.gallivm
;
2672 bld4
.static_texture_state
= bld
.static_texture_state
;
2673 bld4
.static_sampler_state
= bld
.static_sampler_state
;
2674 bld4
.dynamic_state
= bld
.dynamic_state
;
2675 bld4
.format_desc
= bld
.format_desc
;
2676 bld4
.dims
= bld
.dims
;
2677 bld4
.row_stride_array
= bld
.row_stride_array
;
2678 bld4
.img_stride_array
= bld
.img_stride_array
;
2679 bld4
.base_ptr
= bld
.base_ptr
;
2680 bld4
.mip_offsets
= bld
.mip_offsets
;
2681 bld4
.int_size
= bld
.int_size
;
2683 bld4
.vector_width
= lp_type_width(type4
);
2685 bld4
.float_type
= lp_type_float(32);
2686 bld4
.int_type
= lp_type_int(32);
2687 bld4
.coord_type
= type4
;
2688 bld4
.int_coord_type
= lp_int_type(type4
);
2689 bld4
.float_size_in_type
= lp_type_float(32);
2690 bld4
.float_size_in_type
.length
= dims
> 1 ? 4 : 1;
2691 bld4
.int_size_in_type
= lp_int_type(bld4
.float_size_in_type
);
2692 bld4
.texel_type
= bld
.texel_type
;
2693 bld4
.texel_type
.length
= 4;
2695 bld4
.num_mips
= bld4
.num_lods
= 1;
2696 if ((gallivm_debug
& GALLIVM_DEBUG_NO_QUAD_LOD
) &&
2697 (gallivm_debug
& GALLIVM_DEBUG_NO_RHO_APPROX
) &&
2698 (static_texture_state
->target
== PIPE_TEXTURE_CUBE
) &&
2699 (!is_fetch
&& mip_filter
!= PIPE_TEX_MIPFILTER_NONE
)) {
2700 bld4
.num_mips
= type4
.length
;
2701 bld4
.num_lods
= type4
.length
;
2703 if (lod_property
== LP_SAMPLER_LOD_PER_ELEMENT
&&
2704 (explicit_lod
|| lod_bias
|| derivs
)) {
2705 if ((is_fetch
&& target
!= PIPE_BUFFER
) ||
2706 (!is_fetch
&& mip_filter
!= PIPE_TEX_MIPFILTER_NONE
)) {
2707 bld4
.num_mips
= type4
.length
;
2708 bld4
.num_lods
= type4
.length
;
2710 else if (!is_fetch
&& min_img_filter
!= mag_img_filter
) {
2712 bld4
.num_lods
= type4
.length
;
2716 /* we want native vector size to be able to use our intrinsics */
2717 bld4
.lodf_type
= type4
;
2718 if (bld4
.num_lods
!= type4
.length
) {
2719 bld4
.lodf_type
.length
= 1;
2721 bld4
.lodi_type
= lp_int_type(bld4
.lodf_type
);
2722 bld4
.levelf_type
= type4
;
2723 if (bld4
.num_mips
!= type4
.length
) {
2724 bld4
.levelf_type
.length
= 1;
2726 bld4
.leveli_type
= lp_int_type(bld4
.levelf_type
);
2727 bld4
.float_size_type
= bld4
.float_size_in_type
;
2728 if (bld4
.num_mips
> 1) {
2729 bld4
.float_size_type
.length
= bld4
.num_mips
== type4
.length
?
2730 bld4
.num_mips
* bld4
.float_size_in_type
.length
:
2733 bld4
.int_size_type
= lp_int_type(bld4
.float_size_type
);
2735 lp_build_context_init(&bld4
.float_bld
, gallivm
, bld4
.float_type
);
2736 lp_build_context_init(&bld4
.float_vec_bld
, gallivm
, type4
);
2737 lp_build_context_init(&bld4
.int_bld
, gallivm
, bld4
.int_type
);
2738 lp_build_context_init(&bld4
.coord_bld
, gallivm
, bld4
.coord_type
);
2739 lp_build_context_init(&bld4
.int_coord_bld
, gallivm
, bld4
.int_coord_type
);
2740 lp_build_context_init(&bld4
.int_size_in_bld
, gallivm
, bld4
.int_size_in_type
);
2741 lp_build_context_init(&bld4
.float_size_in_bld
, gallivm
, bld4
.float_size_in_type
);
2742 lp_build_context_init(&bld4
.int_size_bld
, gallivm
, bld4
.int_size_type
);
2743 lp_build_context_init(&bld4
.float_size_bld
, gallivm
, bld4
.float_size_type
);
2744 lp_build_context_init(&bld4
.texel_bld
, gallivm
, bld4
.texel_type
);
2745 lp_build_context_init(&bld4
.levelf_bld
, gallivm
, bld4
.levelf_type
);
2746 lp_build_context_init(&bld4
.leveli_bld
, gallivm
, bld4
.leveli_type
);
2747 lp_build_context_init(&bld4
.lodf_bld
, gallivm
, bld4
.lodf_type
);
2748 lp_build_context_init(&bld4
.lodi_bld
, gallivm
, bld4
.lodi_type
);
2750 for (i
= 0; i
< num_quads
; i
++) {
2751 LLVMValueRef s4
, t4
, r4
;
2752 LLVMValueRef lod_positive4
, lod_fpart4
= NULL
;
2753 LLVMValueRef ilevel04
, ilevel14
= NULL
;
2754 LLVMValueRef offsets4
[4] = { NULL
};
2755 unsigned num_lods
= bld4
.num_lods
;
2757 s4
= lp_build_extract_range(gallivm
, newcoords
[0], 4*i
, 4);
2758 t4
= lp_build_extract_range(gallivm
, newcoords
[1], 4*i
, 4);
2759 r4
= lp_build_extract_range(gallivm
, newcoords
[2], 4*i
, 4);
2762 offsets4
[0] = lp_build_extract_range(gallivm
, offsets
[0], 4*i
, 4);
2764 offsets4
[1] = lp_build_extract_range(gallivm
, offsets
[1], 4*i
, 4);
2766 offsets4
[2] = lp_build_extract_range(gallivm
, offsets
[2], 4*i
, 4);
2770 lod_positive4
= lp_build_extract_range(gallivm
, lod_positive
, num_lods
* i
, num_lods
);
2771 ilevel04
= bld
.num_mips
== 1 ? ilevel0
:
2772 lp_build_extract_range(gallivm
, ilevel0
, num_lods
* i
, num_lods
);
2773 if (mip_filter
== PIPE_TEX_MIPFILTER_LINEAR
) {
2774 ilevel14
= lp_build_extract_range(gallivm
, ilevel1
, num_lods
* i
, num_lods
);
2775 lod_fpart4
= lp_build_extract_range(gallivm
, lod_fpart
, num_lods
* i
, num_lods
);
2779 /* do sampling/filtering with fixed pt arithmetic */
2780 lp_build_sample_aos(&bld4
, sampler_index
,
2781 s4
, t4
, r4
, offsets4
,
2782 lod_positive4
, lod_fpart4
,
2788 /* this path is currently unreachable and hence might break easily... */
2789 LLVMValueRef newcoords4
[5];
2793 newcoords4
[3] = lp_build_extract_range(gallivm
, newcoords
[3], 4*i
, 4);
2794 newcoords4
[4] = lp_build_extract_range(gallivm
, newcoords
[4], 4*i
, 4);
2796 lp_build_sample_general(&bld4
, sampler_index
,
2797 newcoords4
, offsets4
,
2798 lod_positive4
, lod_fpart4
,
2802 for (j
= 0; j
< 4; j
++) {
2803 texelouttmp
[j
][i
] = texelout4
[j
];
2807 for (j
= 0; j
< 4; j
++) {
2808 texel_out
[j
] = lp_build_concat(gallivm
, texelouttmp
[j
], type4
, num_quads
);
2813 if (target
!= PIPE_BUFFER
) {
2814 apply_sampler_swizzle(&bld
, texel_out
);
2818 * texel type can be a (32bit) int/uint (for pure int formats only),
2819 * however we are expected to always return floats (storage is untyped).
2821 if (!bld
.texel_type
.floating
) {
2823 for (chan
= 0; chan
< 4; chan
++) {
2824 texel_out
[chan
] = LLVMBuildBitCast(builder
, texel_out
[chan
],
2825 lp_build_vec_type(gallivm
, type
), "");
2831 lp_build_size_query_soa(struct gallivm_state
*gallivm
,
2832 const struct lp_static_texture_state
*static_state
,
2833 struct lp_sampler_dynamic_state
*dynamic_state
,
2834 struct lp_type int_type
,
2835 unsigned texture_unit
,
2837 boolean is_sviewinfo
,
2838 enum lp_sampler_lod_property lod_property
,
2839 LLVMValueRef explicit_lod
,
2840 LLVMValueRef
*sizes_out
)
2842 LLVMValueRef lod
, level
, size
;
2843 LLVMValueRef first_level
= NULL
;
2846 unsigned num_lods
= 1;
2847 struct lp_build_context bld_int_vec4
;
2849 if (static_state
->format
== PIPE_FORMAT_NONE
) {
2851 * If there's nothing bound, format is NONE, and we must return
2852 * all zero as mandated by d3d10 in this case.
2855 LLVMValueRef zero
= lp_build_const_vec(gallivm
, int_type
, 0.0F
);
2856 for (chan
= 0; chan
< 4; chan
++) {
2857 sizes_out
[chan
] = zero
;
2863 * Do some sanity verification about bound texture and shader dcl target.
2864 * Not entirely sure what's possible but assume array/non-array
2865 * always compatible (probably not ok for OpenGL but d3d10 has no
2866 * distinction of arrays at the resource level).
2867 * Everything else looks bogus (though not entirely sure about rect/2d).
2868 * Currently disabled because it causes assertion failures if there's
2869 * nothing bound (or rather a dummy texture, not that this case would
2870 * return the right values).
2872 if (0 && static_state
->target
!= target
) {
2873 if (static_state
->target
== PIPE_TEXTURE_1D
)
2874 assert(target
== PIPE_TEXTURE_1D_ARRAY
);
2875 else if (static_state
->target
== PIPE_TEXTURE_1D_ARRAY
)
2876 assert(target
== PIPE_TEXTURE_1D
);
2877 else if (static_state
->target
== PIPE_TEXTURE_2D
)
2878 assert(target
== PIPE_TEXTURE_2D_ARRAY
);
2879 else if (static_state
->target
== PIPE_TEXTURE_2D_ARRAY
)
2880 assert(target
== PIPE_TEXTURE_2D
);
2881 else if (static_state
->target
== PIPE_TEXTURE_CUBE
)
2882 assert(target
== PIPE_TEXTURE_CUBE_ARRAY
);
2883 else if (static_state
->target
== PIPE_TEXTURE_CUBE_ARRAY
)
2884 assert(target
== PIPE_TEXTURE_CUBE
);
2889 dims
= texture_dims(target
);
2892 case PIPE_TEXTURE_1D_ARRAY
:
2893 case PIPE_TEXTURE_2D_ARRAY
:
2901 assert(!int_type
.floating
);
2903 lp_build_context_init(&bld_int_vec4
, gallivm
, lp_type_int_vec(32, 128));
2906 /* FIXME: this needs to honor per-element lod */
2907 lod
= LLVMBuildExtractElement(gallivm
->builder
, explicit_lod
, lp_build_const_int32(gallivm
, 0), "");
2908 first_level
= dynamic_state
->first_level(dynamic_state
, gallivm
, texture_unit
);
2909 level
= LLVMBuildAdd(gallivm
->builder
, lod
, first_level
, "level");
2910 lod
= lp_build_broadcast_scalar(&bld_int_vec4
, level
);
2912 lod
= bld_int_vec4
.zero
;
2915 size
= bld_int_vec4
.undef
;
2917 size
= LLVMBuildInsertElement(gallivm
->builder
, size
,
2918 dynamic_state
->width(dynamic_state
, gallivm
, texture_unit
),
2919 lp_build_const_int32(gallivm
, 0), "");
2922 size
= LLVMBuildInsertElement(gallivm
->builder
, size
,
2923 dynamic_state
->height(dynamic_state
, gallivm
, texture_unit
),
2924 lp_build_const_int32(gallivm
, 1), "");
2928 size
= LLVMBuildInsertElement(gallivm
->builder
, size
,
2929 dynamic_state
->depth(dynamic_state
, gallivm
, texture_unit
),
2930 lp_build_const_int32(gallivm
, 2), "");
2933 size
= lp_build_minify(&bld_int_vec4
, size
, lod
, TRUE
);
2936 size
= LLVMBuildInsertElement(gallivm
->builder
, size
,
2937 dynamic_state
->depth(dynamic_state
, gallivm
, texture_unit
),
2938 lp_build_const_int32(gallivm
, dims
), "");
2941 * d3d10 requires zero for x/y/z values (but not w, i.e. mip levels)
2942 * if level is out of bounds (note this can't cover unbound texture
2943 * here, which also requires returning zero).
2945 if (explicit_lod
&& is_sviewinfo
) {
2946 LLVMValueRef last_level
, out
, out1
;
2947 struct lp_build_context leveli_bld
;
2949 /* everything is scalar for now */
2950 lp_build_context_init(&leveli_bld
, gallivm
, lp_type_int_vec(32, 32));
2951 last_level
= dynamic_state
->last_level(dynamic_state
, gallivm
, texture_unit
);
2953 out
= lp_build_cmp(&leveli_bld
, PIPE_FUNC_LESS
, level
, first_level
);
2954 out1
= lp_build_cmp(&leveli_bld
, PIPE_FUNC_GREATER
, level
, last_level
);
2955 out
= lp_build_or(&leveli_bld
, out
, out1
);
2956 if (num_lods
== 1) {
2957 out
= lp_build_broadcast_scalar(&bld_int_vec4
, out
);
2963 size
= lp_build_andnot(&bld_int_vec4
, size
, out
);
2965 for (i
= 0; i
< dims
+ (has_array
? 1 : 0); i
++) {
2966 sizes_out
[i
] = lp_build_extract_broadcast(gallivm
, bld_int_vec4
.type
, int_type
,
2968 lp_build_const_int32(gallivm
, i
));
2971 for (; i
< 4; i
++) {
2972 sizes_out
[i
] = lp_build_const_vec(gallivm
, int_type
, 0.0);
2977 * if there's no explicit_lod (buffers, rects) queries requiring nr of
2978 * mips would be illegal.
2980 if (is_sviewinfo
&& explicit_lod
) {
2981 struct lp_build_context bld_int_scalar
;
2982 LLVMValueRef num_levels
;
2983 lp_build_context_init(&bld_int_scalar
, gallivm
, lp_type_int(32));
2985 if (static_state
->level_zero_only
) {
2986 num_levels
= bld_int_scalar
.one
;
2989 LLVMValueRef last_level
;
2991 last_level
= dynamic_state
->last_level(dynamic_state
, gallivm
, texture_unit
);
2992 num_levels
= lp_build_sub(&bld_int_scalar
, last_level
, first_level
);
2993 num_levels
= lp_build_add(&bld_int_scalar
, num_levels
, bld_int_scalar
.one
);
2995 sizes_out
[3] = lp_build_broadcast(gallivm
, lp_build_vec_type(gallivm
, int_type
),