1 /**************************************************************************
3 * Copyright 2010 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 * Pixel format accessor functions.
32 * @author Jose Fonseca <jfonseca@vmware.com>
35 #include "util/format/u_format.h"
36 #include "util/format/u_format_s3tc.h"
37 #include "util/u_math.h"
39 #include "pipe/p_defines.h"
40 #include "pipe/p_screen.h"
44 * Copy 2D rect from one place to another.
45 * Position and sizes are in pixels.
46 * src_stride may be negative to do vertical flip of pixels from source.
49 util_copy_rect(ubyte
* dst
,
50 enum pipe_format format
,
62 int src_stride_pos
= src_stride
< 0 ? -src_stride
: src_stride
;
63 int blocksize
= util_format_get_blocksize(format
);
64 int blockwidth
= util_format_get_blockwidth(format
);
65 int blockheight
= util_format_get_blockheight(format
);
67 assert(blocksize
> 0);
68 assert(blockwidth
> 0);
69 assert(blockheight
> 0);
73 width
= (width
+ blockwidth
- 1)/blockwidth
;
74 height
= (height
+ blockheight
- 1)/blockheight
;
78 dst
+= dst_x
* blocksize
;
79 src
+= src_x
* blocksize
;
80 dst
+= dst_y
* dst_stride
;
81 src
+= src_y
* src_stride_pos
;
84 if (width
== dst_stride
&& width
== (unsigned)src_stride
)
85 memcpy(dst
, src
, height
* width
);
87 for (i
= 0; i
< height
; i
++) {
88 memcpy(dst
, src
, width
);
97 util_format_is_float(enum pipe_format format
)
99 const struct util_format_description
*desc
= util_format_description(format
);
107 i
= util_format_get_first_non_void_channel(format
);
112 return desc
->channel
[i
].type
== UTIL_FORMAT_TYPE_FLOAT
? TRUE
: FALSE
;
116 /** Test if the format contains RGB, but not alpha */
118 util_format_has_alpha(enum pipe_format format
)
120 const struct util_format_description
*desc
=
121 util_format_description(format
);
123 return (desc
->colorspace
== UTIL_FORMAT_COLORSPACE_RGB
||
124 desc
->colorspace
== UTIL_FORMAT_COLORSPACE_SRGB
) &&
125 desc
->swizzle
[3] != PIPE_SWIZZLE_1
;
130 util_format_is_luminance(enum pipe_format format
)
132 const struct util_format_description
*desc
=
133 util_format_description(format
);
135 if ((desc
->colorspace
== UTIL_FORMAT_COLORSPACE_RGB
||
136 desc
->colorspace
== UTIL_FORMAT_COLORSPACE_SRGB
) &&
137 desc
->swizzle
[0] == PIPE_SWIZZLE_X
&&
138 desc
->swizzle
[1] == PIPE_SWIZZLE_X
&&
139 desc
->swizzle
[2] == PIPE_SWIZZLE_X
&&
140 desc
->swizzle
[3] == PIPE_SWIZZLE_1
) {
147 util_format_is_alpha(enum pipe_format format
)
149 const struct util_format_description
*desc
=
150 util_format_description(format
);
152 if ((desc
->colorspace
== UTIL_FORMAT_COLORSPACE_RGB
||
153 desc
->colorspace
== UTIL_FORMAT_COLORSPACE_SRGB
) &&
154 desc
->swizzle
[0] == PIPE_SWIZZLE_0
&&
155 desc
->swizzle
[1] == PIPE_SWIZZLE_0
&&
156 desc
->swizzle
[2] == PIPE_SWIZZLE_0
&&
157 desc
->swizzle
[3] == PIPE_SWIZZLE_X
) {
164 util_format_is_pure_integer(enum pipe_format format
)
166 const struct util_format_description
*desc
= util_format_description(format
);
169 /* Find the first non-void channel. */
170 i
= util_format_get_first_non_void_channel(format
);
174 return desc
->channel
[i
].pure_integer
? TRUE
: FALSE
;
178 util_format_is_pure_sint(enum pipe_format format
)
180 const struct util_format_description
*desc
= util_format_description(format
);
183 i
= util_format_get_first_non_void_channel(format
);
187 return (desc
->channel
[i
].type
== UTIL_FORMAT_TYPE_SIGNED
&& desc
->channel
[i
].pure_integer
) ? TRUE
: FALSE
;
191 util_format_is_pure_uint(enum pipe_format format
)
193 const struct util_format_description
*desc
= util_format_description(format
);
196 i
= util_format_get_first_non_void_channel(format
);
200 return (desc
->channel
[i
].type
== UTIL_FORMAT_TYPE_UNSIGNED
&& desc
->channel
[i
].pure_integer
) ? TRUE
: FALSE
;
204 * Returns true if the format contains normalized signed channels.
207 util_format_is_snorm(enum pipe_format format
)
209 const struct util_format_description
*desc
= util_format_description(format
);
211 return desc
->is_snorm
;
215 * Returns true if the format contains normalized unsigned channels.
218 util_format_is_unorm(enum pipe_format format
)
220 const struct util_format_description
*desc
= util_format_description(format
);
222 return desc
->is_unorm
;
226 util_format_is_snorm8(enum pipe_format format
)
228 const struct util_format_description
*desc
= util_format_description(format
);
234 i
= util_format_get_first_non_void_channel(format
);
238 return desc
->channel
[i
].type
== UTIL_FORMAT_TYPE_SIGNED
&&
239 !desc
->channel
[i
].pure_integer
&&
240 desc
->channel
[i
].normalized
&&
241 desc
->channel
[i
].size
== 8;
245 util_format_is_luminance_alpha(enum pipe_format format
)
247 const struct util_format_description
*desc
=
248 util_format_description(format
);
250 if ((desc
->colorspace
== UTIL_FORMAT_COLORSPACE_RGB
||
251 desc
->colorspace
== UTIL_FORMAT_COLORSPACE_SRGB
) &&
252 desc
->swizzle
[0] == PIPE_SWIZZLE_X
&&
253 desc
->swizzle
[1] == PIPE_SWIZZLE_X
&&
254 desc
->swizzle
[2] == PIPE_SWIZZLE_X
&&
255 desc
->swizzle
[3] == PIPE_SWIZZLE_Y
) {
263 util_format_is_intensity(enum pipe_format format
)
265 const struct util_format_description
*desc
=
266 util_format_description(format
);
268 if ((desc
->colorspace
== UTIL_FORMAT_COLORSPACE_RGB
||
269 desc
->colorspace
== UTIL_FORMAT_COLORSPACE_SRGB
) &&
270 desc
->swizzle
[0] == PIPE_SWIZZLE_X
&&
271 desc
->swizzle
[1] == PIPE_SWIZZLE_X
&&
272 desc
->swizzle
[2] == PIPE_SWIZZLE_X
&&
273 desc
->swizzle
[3] == PIPE_SWIZZLE_X
) {
280 util_format_is_subsampled_422(enum pipe_format format
)
282 const struct util_format_description
*desc
=
283 util_format_description(format
);
285 return desc
->layout
== UTIL_FORMAT_LAYOUT_SUBSAMPLED
&&
286 desc
->block
.width
== 2 &&
287 desc
->block
.height
== 1 &&
288 desc
->block
.bits
== 32;
292 * Calculates the MRD for the depth format. MRD is used in depth bias
293 * for UNORM and unbound depth buffers. When the depth buffer is floating
294 * point, the depth bias calculation does not use the MRD. However, the
295 * default MRD will be 1.0 / ((1 << 24) - 1).
298 util_get_depth_format_mrd(const struct util_format_description
*desc
)
301 * Depth buffer formats without a depth component OR scenarios
302 * without a bound depth buffer default to D24.
304 double mrd
= 1.0 / ((1 << 24) - 1);
305 unsigned depth_channel
;
310 * Some depth formats do not store the depth component in the first
311 * channel, detect the format and adjust the depth channel. Get the
312 * swizzled depth component channel.
314 depth_channel
= desc
->swizzle
[0];
316 if (desc
->channel
[depth_channel
].type
== UTIL_FORMAT_TYPE_UNSIGNED
&&
317 desc
->channel
[depth_channel
].normalized
) {
320 depth_bits
= desc
->channel
[depth_channel
].size
;
321 mrd
= 1.0 / ((1ULL << depth_bits
) - 1);
329 util_format_read_4f(enum pipe_format format
,
330 float *dst
, unsigned dst_stride
,
331 const void *src
, unsigned src_stride
,
332 unsigned x
, unsigned y
, unsigned w
, unsigned h
)
334 const struct util_format_description
*format_desc
;
335 const uint8_t *src_row
;
338 format_desc
= util_format_description(format
);
340 assert(x
% format_desc
->block
.width
== 0);
341 assert(y
% format_desc
->block
.height
== 0);
343 src_row
= (const uint8_t *)src
+ y
*src_stride
+ x
*(format_desc
->block
.bits
/8);
346 format_desc
->unpack_rgba_float(dst_row
, dst_stride
, src_row
, src_stride
, w
, h
);
351 util_format_write_4(enum pipe_format format
,
352 const void *src
, unsigned src_stride
,
353 void *dst
, unsigned dst_stride
,
354 unsigned x
, unsigned y
, unsigned w
, unsigned h
)
356 const struct util_format_description
*format_desc
;
359 format_desc
= util_format_description(format
);
361 assert(x
% format_desc
->block
.width
== 0);
362 assert(y
% format_desc
->block
.height
== 0);
364 dst_row
= (uint8_t *)dst
+ y
*dst_stride
+ x
*(format_desc
->block
.bits
/8);
366 if (util_format_is_pure_uint(format
))
367 format_desc
->pack_rgba_uint(dst_row
, dst_stride
, src
, src_stride
, w
, h
);
368 else if (util_format_is_pure_sint(format
))
369 format_desc
->pack_rgba_sint(dst_row
, dst_stride
, src
, src_stride
, w
, h
);
371 format_desc
->pack_rgba_float(dst_row
, dst_stride
, src
, src_stride
, w
, h
);
376 util_format_read_4ub(enum pipe_format format
, uint8_t *dst
, unsigned dst_stride
, const void *src
, unsigned src_stride
, unsigned x
, unsigned y
, unsigned w
, unsigned h
)
378 const struct util_format_description
*format_desc
;
379 const uint8_t *src_row
;
382 format_desc
= util_format_description(format
);
384 assert(x
% format_desc
->block
.width
== 0);
385 assert(y
% format_desc
->block
.height
== 0);
387 src_row
= (const uint8_t *)src
+ y
*src_stride
+ x
*(format_desc
->block
.bits
/8);
390 format_desc
->unpack_rgba_8unorm(dst_row
, dst_stride
, src_row
, src_stride
, w
, h
);
395 util_format_write_4ub(enum pipe_format format
, const uint8_t *src
, unsigned src_stride
, void *dst
, unsigned dst_stride
, unsigned x
, unsigned y
, unsigned w
, unsigned h
)
397 const struct util_format_description
*format_desc
;
399 const uint8_t *src_row
;
401 format_desc
= util_format_description(format
);
403 assert(x
% format_desc
->block
.width
== 0);
404 assert(y
% format_desc
->block
.height
== 0);
406 dst_row
= (uint8_t *)dst
+ y
*dst_stride
+ x
*(format_desc
->block
.bits
/8);
409 format_desc
->pack_rgba_8unorm(dst_row
, dst_stride
, src_row
, src_stride
, w
, h
);
413 util_format_read_4ui(enum pipe_format format
,
414 unsigned *dst
, unsigned dst_stride
,
415 const void *src
, unsigned src_stride
,
416 unsigned x
, unsigned y
, unsigned w
, unsigned h
)
418 const struct util_format_description
*format_desc
;
419 const uint8_t *src_row
;
422 format_desc
= util_format_description(format
);
424 assert(x
% format_desc
->block
.width
== 0);
425 assert(y
% format_desc
->block
.height
== 0);
427 src_row
= (const uint8_t *)src
+ y
*src_stride
+ x
*(format_desc
->block
.bits
/8);
430 format_desc
->unpack_rgba_uint(dst_row
, dst_stride
, src_row
, src_stride
, w
, h
);
434 util_format_read_4i(enum pipe_format format
,
435 int *dst
, unsigned dst_stride
,
436 const void *src
, unsigned src_stride
,
437 unsigned x
, unsigned y
, unsigned w
, unsigned h
)
439 const struct util_format_description
*format_desc
;
440 const uint8_t *src_row
;
443 format_desc
= util_format_description(format
);
445 assert(x
% format_desc
->block
.width
== 0);
446 assert(y
% format_desc
->block
.height
== 0);
448 src_row
= (const uint8_t *)src
+ y
*src_stride
+ x
*(format_desc
->block
.bits
/8);
451 format_desc
->unpack_rgba_sint(dst_row
, dst_stride
, src_row
, src_stride
, w
, h
);
455 * Check if we can safely memcopy from the source format to the dest format.
456 * This basically covers the cases of a "used" channel copied to a typeless
457 * channel, plus some 1-channel cases.
458 * Examples of compatible copy formats include:
459 * b8g8r8a8_unorm -> b8g8r8x8_unorm
460 * a8r8g8b8_unorm -> x8r8g8b8_unorm
461 * b5g5r5a1_unorm -> b5g5r5x1_unorm
462 * b4g4r4a4_unorm -> b4g4r4x4_unorm
463 * l8_unorm -> r8_unorm
464 * i8_unorm -> l8_unorm
465 * i8_unorm -> a8_unorm
466 * i8_unorm -> r8_unorm
467 * l16_unorm -> r16_unorm
468 * z24_unorm_s8_uint -> z24x8_unorm
469 * s8_uint_z24_unorm -> x8z24_unorm
470 * r8g8b8a8_unorm -> r8g8b8x8_unorm
471 * a8b8g8r8_srgb -> x8b8g8r8_srgb
472 * b8g8r8a8_srgb -> b8g8r8x8_srgb
473 * a8r8g8b8_srgb -> x8r8g8b8_srgb
474 * a8b8g8r8_unorm -> x8b8g8r8_unorm
475 * r10g10b10a2_uscaled -> r10g10b10x2_uscaled
476 * r10sg10sb10sa2u_norm -> r10g10b10x2_snorm
479 util_is_format_compatible(const struct util_format_description
*src_desc
,
480 const struct util_format_description
*dst_desc
)
484 if (src_desc
->format
== dst_desc
->format
) {
488 if (src_desc
->layout
!= UTIL_FORMAT_LAYOUT_PLAIN
||
489 dst_desc
->layout
!= UTIL_FORMAT_LAYOUT_PLAIN
) {
493 if (src_desc
->block
.bits
!= dst_desc
->block
.bits
||
494 src_desc
->nr_channels
!= dst_desc
->nr_channels
||
495 src_desc
->colorspace
!= dst_desc
->colorspace
) {
499 for (chan
= 0; chan
< 4; ++chan
) {
500 if (src_desc
->channel
[chan
].size
!=
501 dst_desc
->channel
[chan
].size
) {
506 for (chan
= 0; chan
< 4; ++chan
) {
507 enum pipe_swizzle swizzle
= dst_desc
->swizzle
[chan
];
510 if (src_desc
->swizzle
[chan
] != swizzle
) {
513 if ((src_desc
->channel
[swizzle
].type
!=
514 dst_desc
->channel
[swizzle
].type
) ||
515 (src_desc
->channel
[swizzle
].normalized
!=
516 dst_desc
->channel
[swizzle
].normalized
)) {
527 util_format_fits_8unorm(const struct util_format_description
*format_desc
)
532 * After linearized sRGB values require more than 8bits.
535 if (format_desc
->colorspace
== UTIL_FORMAT_COLORSPACE_SRGB
) {
539 switch (format_desc
->layout
) {
541 case UTIL_FORMAT_LAYOUT_S3TC
:
543 * These are straight forward.
546 case UTIL_FORMAT_LAYOUT_RGTC
:
547 if (format_desc
->format
== PIPE_FORMAT_RGTC1_SNORM
||
548 format_desc
->format
== PIPE_FORMAT_RGTC2_SNORM
||
549 format_desc
->format
== PIPE_FORMAT_LATC1_SNORM
||
550 format_desc
->format
== PIPE_FORMAT_LATC2_SNORM
)
553 case UTIL_FORMAT_LAYOUT_BPTC
:
554 if (format_desc
->format
== PIPE_FORMAT_BPTC_RGBA_UNORM
)
558 case UTIL_FORMAT_LAYOUT_ETC
:
559 if (format_desc
->format
== PIPE_FORMAT_ETC1_RGB8
)
563 case UTIL_FORMAT_LAYOUT_PLAIN
:
565 * For these we can find a generic rule.
568 for (chan
= 0; chan
< format_desc
->nr_channels
; ++chan
) {
569 switch (format_desc
->channel
[chan
].type
) {
570 case UTIL_FORMAT_TYPE_VOID
:
572 case UTIL_FORMAT_TYPE_UNSIGNED
:
573 if (!format_desc
->channel
[chan
].normalized
||
574 format_desc
->channel
[chan
].size
> 8) {
586 * Handle all others on a case by case basis.
589 switch (format_desc
->format
) {
590 case PIPE_FORMAT_R1_UNORM
:
591 case PIPE_FORMAT_UYVY
:
592 case PIPE_FORMAT_YUYV
:
593 case PIPE_FORMAT_R8G8_B8G8_UNORM
:
594 case PIPE_FORMAT_G8R8_G8B8_UNORM
:
605 util_format_translate(enum pipe_format dst_format
,
606 void *dst
, unsigned dst_stride
,
607 unsigned dst_x
, unsigned dst_y
,
608 enum pipe_format src_format
,
609 const void *src
, unsigned src_stride
,
610 unsigned src_x
, unsigned src_y
,
611 unsigned width
, unsigned height
)
613 const struct util_format_description
*dst_format_desc
;
614 const struct util_format_description
*src_format_desc
;
616 const uint8_t *src_row
;
617 unsigned x_step
, y_step
;
621 dst_format_desc
= util_format_description(dst_format
);
622 src_format_desc
= util_format_description(src_format
);
624 if (util_is_format_compatible(src_format_desc
, dst_format_desc
)) {
629 util_copy_rect(dst
, dst_format
, dst_stride
, dst_x
, dst_y
,
630 width
, height
, src
, (int)src_stride
,
635 assert(dst_x
% dst_format_desc
->block
.width
== 0);
636 assert(dst_y
% dst_format_desc
->block
.height
== 0);
637 assert(src_x
% src_format_desc
->block
.width
== 0);
638 assert(src_y
% src_format_desc
->block
.height
== 0);
640 dst_row
= (uint8_t *)dst
+ dst_y
*dst_stride
+ dst_x
*(dst_format_desc
->block
.bits
/8);
641 src_row
= (const uint8_t *)src
+ src_y
*src_stride
+ src_x
*(src_format_desc
->block
.bits
/8);
644 * This works because all pixel formats have pixel blocks with power of two
648 y_step
= MAX2(dst_format_desc
->block
.height
, src_format_desc
->block
.height
);
649 x_step
= MAX2(dst_format_desc
->block
.width
, src_format_desc
->block
.width
);
650 assert(y_step
% dst_format_desc
->block
.height
== 0);
651 assert(y_step
% src_format_desc
->block
.height
== 0);
653 dst_step
= y_step
/ dst_format_desc
->block
.height
* dst_stride
;
654 src_step
= y_step
/ src_format_desc
->block
.height
* src_stride
;
657 * TODO: double formats will loose precision
658 * TODO: Add a special case for formats that are mere swizzles of each other
661 if (src_format_desc
->colorspace
== UTIL_FORMAT_COLORSPACE_ZS
||
662 dst_format_desc
->colorspace
== UTIL_FORMAT_COLORSPACE_ZS
) {
664 uint8_t *tmp_s
= NULL
;
669 if (src_format_desc
->unpack_z_float
&&
670 dst_format_desc
->pack_z_float
) {
671 tmp_z
= malloc(width
* sizeof *tmp_z
);
674 if (src_format_desc
->unpack_s_8uint
&&
675 dst_format_desc
->pack_s_8uint
) {
676 tmp_s
= malloc(width
* sizeof *tmp_s
);
681 util_format_unpack_z_float(src_format
, tmp_z
, src_row
, width
);
682 util_format_pack_z_float(dst_format
, dst_row
, tmp_z
, width
);
686 util_format_unpack_s_8uint(src_format
, tmp_s
, src_row
, width
);
687 util_format_pack_s_8uint(dst_format
, dst_row
, tmp_s
, width
);
701 if (util_format_fits_8unorm(src_format_desc
) ||
702 util_format_fits_8unorm(dst_format_desc
)) {
706 if (!src_format_desc
->unpack_rgba_8unorm
||
707 !dst_format_desc
->pack_rgba_8unorm
) {
711 tmp_stride
= MAX2(width
, x_step
) * 4 * sizeof *tmp_row
;
712 tmp_row
= malloc(y_step
* tmp_stride
);
716 while (height
>= y_step
) {
717 src_format_desc
->unpack_rgba_8unorm(tmp_row
, tmp_stride
, src_row
, src_stride
, width
, y_step
);
718 dst_format_desc
->pack_rgba_8unorm(dst_row
, dst_stride
, tmp_row
, tmp_stride
, width
, y_step
);
726 src_format_desc
->unpack_rgba_8unorm(tmp_row
, tmp_stride
, src_row
, src_stride
, width
, height
);
727 dst_format_desc
->pack_rgba_8unorm(dst_row
, dst_stride
, tmp_row
, tmp_stride
, width
, height
);
732 else if (util_format_is_pure_sint(src_format
) ||
733 util_format_is_pure_sint(dst_format
)) {
737 if (!src_format_desc
->unpack_rgba_sint
||
738 !dst_format_desc
->pack_rgba_sint
) {
742 tmp_stride
= MAX2(width
, x_step
) * 4 * sizeof *tmp_row
;
743 tmp_row
= malloc(y_step
* tmp_stride
);
747 while (height
>= y_step
) {
748 src_format_desc
->unpack_rgba_sint(tmp_row
, tmp_stride
, src_row
, src_stride
, width
, y_step
);
749 dst_format_desc
->pack_rgba_sint(dst_row
, dst_stride
, tmp_row
, tmp_stride
, width
, y_step
);
757 src_format_desc
->unpack_rgba_sint(tmp_row
, tmp_stride
, src_row
, src_stride
, width
, height
);
758 dst_format_desc
->pack_rgba_sint(dst_row
, dst_stride
, tmp_row
, tmp_stride
, width
, height
);
763 else if (util_format_is_pure_uint(src_format
) ||
764 util_format_is_pure_uint(dst_format
)) {
766 unsigned int *tmp_row
;
768 if (!src_format_desc
->unpack_rgba_uint
||
769 !dst_format_desc
->pack_rgba_uint
) {
773 tmp_stride
= MAX2(width
, x_step
) * 4 * sizeof *tmp_row
;
774 tmp_row
= malloc(y_step
* tmp_stride
);
778 while (height
>= y_step
) {
779 src_format_desc
->unpack_rgba_uint(tmp_row
, tmp_stride
, src_row
, src_stride
, width
, y_step
);
780 dst_format_desc
->pack_rgba_uint(dst_row
, dst_stride
, tmp_row
, tmp_stride
, width
, y_step
);
788 src_format_desc
->unpack_rgba_uint(tmp_row
, tmp_stride
, src_row
, src_stride
, width
, height
);
789 dst_format_desc
->pack_rgba_uint(dst_row
, dst_stride
, tmp_row
, tmp_stride
, width
, height
);
798 if (!src_format_desc
->unpack_rgba_float
||
799 !dst_format_desc
->pack_rgba_float
) {
803 tmp_stride
= MAX2(width
, x_step
) * 4 * sizeof *tmp_row
;
804 tmp_row
= malloc(y_step
* tmp_stride
);
808 while (height
>= y_step
) {
809 src_format_desc
->unpack_rgba_float(tmp_row
, tmp_stride
, src_row
, src_stride
, width
, y_step
);
810 dst_format_desc
->pack_rgba_float(dst_row
, dst_stride
, tmp_row
, tmp_stride
, width
, y_step
);
818 src_format_desc
->unpack_rgba_float(tmp_row
, tmp_stride
, src_row
, src_stride
, width
, height
);
819 dst_format_desc
->pack_rgba_float(dst_row
, dst_stride
, tmp_row
, tmp_stride
, width
, height
);
828 util_format_translate_3d(enum pipe_format dst_format
,
829 void *dst
, unsigned dst_stride
,
830 unsigned dst_slice_stride
,
831 unsigned dst_x
, unsigned dst_y
,
833 enum pipe_format src_format
,
834 const void *src
, unsigned src_stride
,
835 unsigned src_slice_stride
,
836 unsigned src_x
, unsigned src_y
,
837 unsigned src_z
, unsigned width
,
838 unsigned height
, unsigned depth
)
841 const uint8_t *src_layer
;
845 dst_layer
+= dst_z
* dst_slice_stride
;
846 src_layer
+= src_z
* src_slice_stride
;
847 for (z
= 0; z
< depth
; ++z
) {
848 if (!util_format_translate(dst_format
, dst_layer
, dst_stride
,
850 src_format
, src_layer
, src_stride
,
855 dst_layer
+= dst_slice_stride
;
856 src_layer
+= src_slice_stride
;
861 void util_format_compose_swizzles(const unsigned char swz1
[4],
862 const unsigned char swz2
[4],
863 unsigned char dst
[4])
867 for (i
= 0; i
< 4; i
++) {
868 dst
[i
] = swz2
[i
] <= PIPE_SWIZZLE_W
?
869 swz1
[swz2
[i
]] : swz2
[i
];
873 void util_format_apply_color_swizzle(union pipe_color_union
*dst
,
874 const union pipe_color_union
*src
,
875 const unsigned char swz
[4],
876 const boolean is_integer
)
881 for (c
= 0; c
< 4; ++c
) {
883 case PIPE_SWIZZLE_X
: dst
->ui
[c
] = src
->ui
[0]; break;
884 case PIPE_SWIZZLE_Y
: dst
->ui
[c
] = src
->ui
[1]; break;
885 case PIPE_SWIZZLE_Z
: dst
->ui
[c
] = src
->ui
[2]; break;
886 case PIPE_SWIZZLE_W
: dst
->ui
[c
] = src
->ui
[3]; break;
888 dst
->ui
[c
] = (swz
[c
] == PIPE_SWIZZLE_1
) ? 1 : 0;
893 for (c
= 0; c
< 4; ++c
) {
895 case PIPE_SWIZZLE_X
: dst
->f
[c
] = src
->f
[0]; break;
896 case PIPE_SWIZZLE_Y
: dst
->f
[c
] = src
->f
[1]; break;
897 case PIPE_SWIZZLE_Z
: dst
->f
[c
] = src
->f
[2]; break;
898 case PIPE_SWIZZLE_W
: dst
->f
[c
] = src
->f
[3]; break;
900 dst
->f
[c
] = (swz
[c
] == PIPE_SWIZZLE_1
) ? 1.0f
: 0.0f
;
907 void pipe_swizzle_4f(float *dst
, const float *src
,
908 const unsigned char swz
[4])
912 for (i
= 0; i
< 4; i
++) {
913 if (swz
[i
] <= PIPE_SWIZZLE_W
)
914 dst
[i
] = src
[swz
[i
]];
915 else if (swz
[i
] == PIPE_SWIZZLE_0
)
917 else if (swz
[i
] == PIPE_SWIZZLE_1
)
922 void util_format_unswizzle_4f(float *dst
, const float *src
,
923 const unsigned char swz
[4])
927 for (i
= 0; i
< 4; i
++) {
946 util_format_snorm8_to_sint8(enum pipe_format format
)
949 case PIPE_FORMAT_R8_SNORM
:
950 return PIPE_FORMAT_R8_SINT
;
951 case PIPE_FORMAT_R8G8_SNORM
:
952 return PIPE_FORMAT_R8G8_SINT
;
953 case PIPE_FORMAT_R8G8B8_SNORM
:
954 return PIPE_FORMAT_R8G8B8_SINT
;
955 case PIPE_FORMAT_R8G8B8A8_SNORM
:
956 return PIPE_FORMAT_R8G8B8A8_SINT
;
958 case PIPE_FORMAT_A8_SNORM
:
959 return PIPE_FORMAT_A8_SINT
;
960 case PIPE_FORMAT_L8_SNORM
:
961 return PIPE_FORMAT_L8_SINT
;
962 case PIPE_FORMAT_L8A8_SNORM
:
963 return PIPE_FORMAT_L8A8_SINT
;
964 case PIPE_FORMAT_I8_SNORM
:
965 return PIPE_FORMAT_I8_SINT
;
967 case PIPE_FORMAT_R8G8B8X8_SNORM
:
968 return PIPE_FORMAT_R8G8B8X8_SINT
;
969 case PIPE_FORMAT_R8A8_SNORM
:
970 return PIPE_FORMAT_R8A8_SINT
;
971 case PIPE_FORMAT_G8R8_SNORM
:
972 return PIPE_FORMAT_G8R8_SINT
;
973 case PIPE_FORMAT_A8B8G8R8_SNORM
:
974 return PIPE_FORMAT_A8B8G8R8_SINT
;
975 case PIPE_FORMAT_X8B8G8R8_SNORM
:
976 return PIPE_FORMAT_X8B8G8R8_SINT
;