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_4(enum pipe_format format
,
330 void *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
;
337 format_desc
= util_format_description(format
);
339 assert(x
% format_desc
->block
.width
== 0);
340 assert(y
% format_desc
->block
.height
== 0);
342 src_row
= (const uint8_t *)src
+ y
*src_stride
+ x
*(format_desc
->block
.bits
/8);
344 if (util_format_is_pure_uint(format
))
345 format_desc
->unpack_rgba_sint(dst
, dst_stride
, src_row
, src_stride
, w
, h
);
346 else if (util_format_is_pure_uint(format
))
347 format_desc
->unpack_rgba_uint(dst
, dst_stride
, src_row
, src_stride
, w
, h
);
349 format_desc
->unpack_rgba_float(dst
, dst_stride
, src_row
, src_stride
, w
, h
);
354 util_format_write_4(enum pipe_format format
,
355 const void *src
, unsigned src_stride
,
356 void *dst
, unsigned dst_stride
,
357 unsigned x
, unsigned y
, unsigned w
, unsigned h
)
359 const struct util_format_description
*format_desc
;
362 format_desc
= util_format_description(format
);
364 assert(x
% format_desc
->block
.width
== 0);
365 assert(y
% format_desc
->block
.height
== 0);
367 dst_row
= (uint8_t *)dst
+ y
*dst_stride
+ x
*(format_desc
->block
.bits
/8);
369 if (util_format_is_pure_uint(format
))
370 format_desc
->pack_rgba_uint(dst_row
, dst_stride
, src
, src_stride
, w
, h
);
371 else if (util_format_is_pure_sint(format
))
372 format_desc
->pack_rgba_sint(dst_row
, dst_stride
, src
, src_stride
, w
, h
);
374 format_desc
->pack_rgba_float(dst_row
, dst_stride
, src
, src_stride
, w
, h
);
379 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
)
381 const struct util_format_description
*format_desc
;
382 const uint8_t *src_row
;
385 format_desc
= util_format_description(format
);
387 assert(x
% format_desc
->block
.width
== 0);
388 assert(y
% format_desc
->block
.height
== 0);
390 src_row
= (const uint8_t *)src
+ y
*src_stride
+ x
*(format_desc
->block
.bits
/8);
393 format_desc
->unpack_rgba_8unorm(dst_row
, dst_stride
, src_row
, src_stride
, w
, h
);
398 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
)
400 const struct util_format_description
*format_desc
;
402 const uint8_t *src_row
;
404 format_desc
= util_format_description(format
);
406 assert(x
% format_desc
->block
.width
== 0);
407 assert(y
% format_desc
->block
.height
== 0);
409 dst_row
= (uint8_t *)dst
+ y
*dst_stride
+ x
*(format_desc
->block
.bits
/8);
412 format_desc
->pack_rgba_8unorm(dst_row
, dst_stride
, src_row
, src_stride
, w
, h
);
416 * Check if we can safely memcopy from the source format to the dest format.
417 * This basically covers the cases of a "used" channel copied to a typeless
418 * channel, plus some 1-channel cases.
419 * Examples of compatible copy formats include:
420 * b8g8r8a8_unorm -> b8g8r8x8_unorm
421 * a8r8g8b8_unorm -> x8r8g8b8_unorm
422 * b5g5r5a1_unorm -> b5g5r5x1_unorm
423 * b4g4r4a4_unorm -> b4g4r4x4_unorm
424 * l8_unorm -> r8_unorm
425 * i8_unorm -> l8_unorm
426 * i8_unorm -> a8_unorm
427 * i8_unorm -> r8_unorm
428 * l16_unorm -> r16_unorm
429 * z24_unorm_s8_uint -> z24x8_unorm
430 * s8_uint_z24_unorm -> x8z24_unorm
431 * r8g8b8a8_unorm -> r8g8b8x8_unorm
432 * a8b8g8r8_srgb -> x8b8g8r8_srgb
433 * b8g8r8a8_srgb -> b8g8r8x8_srgb
434 * a8r8g8b8_srgb -> x8r8g8b8_srgb
435 * a8b8g8r8_unorm -> x8b8g8r8_unorm
436 * r10g10b10a2_uscaled -> r10g10b10x2_uscaled
437 * r10sg10sb10sa2u_norm -> r10g10b10x2_snorm
440 util_is_format_compatible(const struct util_format_description
*src_desc
,
441 const struct util_format_description
*dst_desc
)
445 if (src_desc
->format
== dst_desc
->format
) {
449 if (src_desc
->layout
!= UTIL_FORMAT_LAYOUT_PLAIN
||
450 dst_desc
->layout
!= UTIL_FORMAT_LAYOUT_PLAIN
) {
454 if (src_desc
->block
.bits
!= dst_desc
->block
.bits
||
455 src_desc
->nr_channels
!= dst_desc
->nr_channels
||
456 src_desc
->colorspace
!= dst_desc
->colorspace
) {
460 for (chan
= 0; chan
< 4; ++chan
) {
461 if (src_desc
->channel
[chan
].size
!=
462 dst_desc
->channel
[chan
].size
) {
467 for (chan
= 0; chan
< 4; ++chan
) {
468 enum pipe_swizzle swizzle
= dst_desc
->swizzle
[chan
];
471 if (src_desc
->swizzle
[chan
] != swizzle
) {
474 if ((src_desc
->channel
[swizzle
].type
!=
475 dst_desc
->channel
[swizzle
].type
) ||
476 (src_desc
->channel
[swizzle
].normalized
!=
477 dst_desc
->channel
[swizzle
].normalized
)) {
488 util_format_fits_8unorm(const struct util_format_description
*format_desc
)
493 * After linearized sRGB values require more than 8bits.
496 if (format_desc
->colorspace
== UTIL_FORMAT_COLORSPACE_SRGB
) {
500 switch (format_desc
->layout
) {
502 case UTIL_FORMAT_LAYOUT_S3TC
:
504 * These are straight forward.
507 case UTIL_FORMAT_LAYOUT_RGTC
:
508 if (format_desc
->format
== PIPE_FORMAT_RGTC1_SNORM
||
509 format_desc
->format
== PIPE_FORMAT_RGTC2_SNORM
||
510 format_desc
->format
== PIPE_FORMAT_LATC1_SNORM
||
511 format_desc
->format
== PIPE_FORMAT_LATC2_SNORM
)
514 case UTIL_FORMAT_LAYOUT_BPTC
:
515 if (format_desc
->format
== PIPE_FORMAT_BPTC_RGBA_UNORM
)
519 case UTIL_FORMAT_LAYOUT_ETC
:
520 if (format_desc
->format
== PIPE_FORMAT_ETC1_RGB8
)
524 case UTIL_FORMAT_LAYOUT_PLAIN
:
526 * For these we can find a generic rule.
529 for (chan
= 0; chan
< format_desc
->nr_channels
; ++chan
) {
530 switch (format_desc
->channel
[chan
].type
) {
531 case UTIL_FORMAT_TYPE_VOID
:
533 case UTIL_FORMAT_TYPE_UNSIGNED
:
534 if (!format_desc
->channel
[chan
].normalized
||
535 format_desc
->channel
[chan
].size
> 8) {
547 * Handle all others on a case by case basis.
550 switch (format_desc
->format
) {
551 case PIPE_FORMAT_R1_UNORM
:
552 case PIPE_FORMAT_UYVY
:
553 case PIPE_FORMAT_YUYV
:
554 case PIPE_FORMAT_R8G8_B8G8_UNORM
:
555 case PIPE_FORMAT_G8R8_G8B8_UNORM
:
566 util_format_translate(enum pipe_format dst_format
,
567 void *dst
, unsigned dst_stride
,
568 unsigned dst_x
, unsigned dst_y
,
569 enum pipe_format src_format
,
570 const void *src
, unsigned src_stride
,
571 unsigned src_x
, unsigned src_y
,
572 unsigned width
, unsigned height
)
574 const struct util_format_description
*dst_format_desc
;
575 const struct util_format_description
*src_format_desc
;
577 const uint8_t *src_row
;
578 unsigned x_step
, y_step
;
582 dst_format_desc
= util_format_description(dst_format
);
583 src_format_desc
= util_format_description(src_format
);
585 if (util_is_format_compatible(src_format_desc
, dst_format_desc
)) {
590 util_copy_rect(dst
, dst_format
, dst_stride
, dst_x
, dst_y
,
591 width
, height
, src
, (int)src_stride
,
596 assert(dst_x
% dst_format_desc
->block
.width
== 0);
597 assert(dst_y
% dst_format_desc
->block
.height
== 0);
598 assert(src_x
% src_format_desc
->block
.width
== 0);
599 assert(src_y
% src_format_desc
->block
.height
== 0);
601 dst_row
= (uint8_t *)dst
+ dst_y
*dst_stride
+ dst_x
*(dst_format_desc
->block
.bits
/8);
602 src_row
= (const uint8_t *)src
+ src_y
*src_stride
+ src_x
*(src_format_desc
->block
.bits
/8);
605 * This works because all pixel formats have pixel blocks with power of two
609 y_step
= MAX2(dst_format_desc
->block
.height
, src_format_desc
->block
.height
);
610 x_step
= MAX2(dst_format_desc
->block
.width
, src_format_desc
->block
.width
);
611 assert(y_step
% dst_format_desc
->block
.height
== 0);
612 assert(y_step
% src_format_desc
->block
.height
== 0);
614 dst_step
= y_step
/ dst_format_desc
->block
.height
* dst_stride
;
615 src_step
= y_step
/ src_format_desc
->block
.height
* src_stride
;
618 * TODO: double formats will loose precision
619 * TODO: Add a special case for formats that are mere swizzles of each other
622 if (src_format_desc
->colorspace
== UTIL_FORMAT_COLORSPACE_ZS
||
623 dst_format_desc
->colorspace
== UTIL_FORMAT_COLORSPACE_ZS
) {
625 uint8_t *tmp_s
= NULL
;
630 if (src_format_desc
->unpack_z_float
&&
631 dst_format_desc
->pack_z_float
) {
632 tmp_z
= malloc(width
* sizeof *tmp_z
);
635 if (src_format_desc
->unpack_s_8uint
&&
636 dst_format_desc
->pack_s_8uint
) {
637 tmp_s
= malloc(width
* sizeof *tmp_s
);
642 util_format_unpack_z_float(src_format
, tmp_z
, src_row
, width
);
643 util_format_pack_z_float(dst_format
, dst_row
, tmp_z
, width
);
647 util_format_unpack_s_8uint(src_format
, tmp_s
, src_row
, width
);
648 util_format_pack_s_8uint(dst_format
, dst_row
, tmp_s
, width
);
662 if (util_format_fits_8unorm(src_format_desc
) ||
663 util_format_fits_8unorm(dst_format_desc
)) {
667 if (!src_format_desc
->unpack_rgba_8unorm
||
668 !dst_format_desc
->pack_rgba_8unorm
) {
672 tmp_stride
= MAX2(width
, x_step
) * 4 * sizeof *tmp_row
;
673 tmp_row
= malloc(y_step
* tmp_stride
);
677 while (height
>= y_step
) {
678 src_format_desc
->unpack_rgba_8unorm(tmp_row
, tmp_stride
, src_row
, src_stride
, width
, y_step
);
679 dst_format_desc
->pack_rgba_8unorm(dst_row
, dst_stride
, tmp_row
, tmp_stride
, width
, y_step
);
687 src_format_desc
->unpack_rgba_8unorm(tmp_row
, tmp_stride
, src_row
, src_stride
, width
, height
);
688 dst_format_desc
->pack_rgba_8unorm(dst_row
, dst_stride
, tmp_row
, tmp_stride
, width
, height
);
693 else if (util_format_is_pure_sint(src_format
) ||
694 util_format_is_pure_sint(dst_format
)) {
698 if (!src_format_desc
->unpack_rgba_sint
||
699 !dst_format_desc
->pack_rgba_sint
) {
703 tmp_stride
= MAX2(width
, x_step
) * 4 * sizeof *tmp_row
;
704 tmp_row
= malloc(y_step
* tmp_stride
);
708 while (height
>= y_step
) {
709 src_format_desc
->unpack_rgba_sint(tmp_row
, tmp_stride
, src_row
, src_stride
, width
, y_step
);
710 dst_format_desc
->pack_rgba_sint(dst_row
, dst_stride
, tmp_row
, tmp_stride
, width
, y_step
);
718 src_format_desc
->unpack_rgba_sint(tmp_row
, tmp_stride
, src_row
, src_stride
, width
, height
);
719 dst_format_desc
->pack_rgba_sint(dst_row
, dst_stride
, tmp_row
, tmp_stride
, width
, height
);
724 else if (util_format_is_pure_uint(src_format
) ||
725 util_format_is_pure_uint(dst_format
)) {
727 unsigned int *tmp_row
;
729 if (!src_format_desc
->unpack_rgba_uint
||
730 !dst_format_desc
->pack_rgba_uint
) {
734 tmp_stride
= MAX2(width
, x_step
) * 4 * sizeof *tmp_row
;
735 tmp_row
= malloc(y_step
* tmp_stride
);
739 while (height
>= y_step
) {
740 src_format_desc
->unpack_rgba_uint(tmp_row
, tmp_stride
, src_row
, src_stride
, width
, y_step
);
741 dst_format_desc
->pack_rgba_uint(dst_row
, dst_stride
, tmp_row
, tmp_stride
, width
, y_step
);
749 src_format_desc
->unpack_rgba_uint(tmp_row
, tmp_stride
, src_row
, src_stride
, width
, height
);
750 dst_format_desc
->pack_rgba_uint(dst_row
, dst_stride
, tmp_row
, tmp_stride
, width
, height
);
759 if (!src_format_desc
->unpack_rgba_float
||
760 !dst_format_desc
->pack_rgba_float
) {
764 tmp_stride
= MAX2(width
, x_step
) * 4 * sizeof *tmp_row
;
765 tmp_row
= malloc(y_step
* tmp_stride
);
769 while (height
>= y_step
) {
770 src_format_desc
->unpack_rgba_float(tmp_row
, tmp_stride
, src_row
, src_stride
, width
, y_step
);
771 dst_format_desc
->pack_rgba_float(dst_row
, dst_stride
, tmp_row
, tmp_stride
, width
, y_step
);
779 src_format_desc
->unpack_rgba_float(tmp_row
, tmp_stride
, src_row
, src_stride
, width
, height
);
780 dst_format_desc
->pack_rgba_float(dst_row
, dst_stride
, tmp_row
, tmp_stride
, width
, height
);
789 util_format_translate_3d(enum pipe_format dst_format
,
790 void *dst
, unsigned dst_stride
,
791 unsigned dst_slice_stride
,
792 unsigned dst_x
, unsigned dst_y
,
794 enum pipe_format src_format
,
795 const void *src
, unsigned src_stride
,
796 unsigned src_slice_stride
,
797 unsigned src_x
, unsigned src_y
,
798 unsigned src_z
, unsigned width
,
799 unsigned height
, unsigned depth
)
802 const uint8_t *src_layer
;
806 dst_layer
+= dst_z
* dst_slice_stride
;
807 src_layer
+= src_z
* src_slice_stride
;
808 for (z
= 0; z
< depth
; ++z
) {
809 if (!util_format_translate(dst_format
, dst_layer
, dst_stride
,
811 src_format
, src_layer
, src_stride
,
816 dst_layer
+= dst_slice_stride
;
817 src_layer
+= src_slice_stride
;
822 void util_format_compose_swizzles(const unsigned char swz1
[4],
823 const unsigned char swz2
[4],
824 unsigned char dst
[4])
828 for (i
= 0; i
< 4; i
++) {
829 dst
[i
] = swz2
[i
] <= PIPE_SWIZZLE_W
?
830 swz1
[swz2
[i
]] : swz2
[i
];
834 void util_format_apply_color_swizzle(union pipe_color_union
*dst
,
835 const union pipe_color_union
*src
,
836 const unsigned char swz
[4],
837 const boolean is_integer
)
842 for (c
= 0; c
< 4; ++c
) {
844 case PIPE_SWIZZLE_X
: dst
->ui
[c
] = src
->ui
[0]; break;
845 case PIPE_SWIZZLE_Y
: dst
->ui
[c
] = src
->ui
[1]; break;
846 case PIPE_SWIZZLE_Z
: dst
->ui
[c
] = src
->ui
[2]; break;
847 case PIPE_SWIZZLE_W
: dst
->ui
[c
] = src
->ui
[3]; break;
849 dst
->ui
[c
] = (swz
[c
] == PIPE_SWIZZLE_1
) ? 1 : 0;
854 for (c
= 0; c
< 4; ++c
) {
856 case PIPE_SWIZZLE_X
: dst
->f
[c
] = src
->f
[0]; break;
857 case PIPE_SWIZZLE_Y
: dst
->f
[c
] = src
->f
[1]; break;
858 case PIPE_SWIZZLE_Z
: dst
->f
[c
] = src
->f
[2]; break;
859 case PIPE_SWIZZLE_W
: dst
->f
[c
] = src
->f
[3]; break;
861 dst
->f
[c
] = (swz
[c
] == PIPE_SWIZZLE_1
) ? 1.0f
: 0.0f
;
868 void pipe_swizzle_4f(float *dst
, const float *src
,
869 const unsigned char swz
[4])
873 for (i
= 0; i
< 4; i
++) {
874 if (swz
[i
] <= PIPE_SWIZZLE_W
)
875 dst
[i
] = src
[swz
[i
]];
876 else if (swz
[i
] == PIPE_SWIZZLE_0
)
878 else if (swz
[i
] == PIPE_SWIZZLE_1
)
883 void util_format_unswizzle_4f(float *dst
, const float *src
,
884 const unsigned char swz
[4])
888 for (i
= 0; i
< 4; i
++) {
907 util_format_snorm8_to_sint8(enum pipe_format format
)
910 case PIPE_FORMAT_R8_SNORM
:
911 return PIPE_FORMAT_R8_SINT
;
912 case PIPE_FORMAT_R8G8_SNORM
:
913 return PIPE_FORMAT_R8G8_SINT
;
914 case PIPE_FORMAT_R8G8B8_SNORM
:
915 return PIPE_FORMAT_R8G8B8_SINT
;
916 case PIPE_FORMAT_R8G8B8A8_SNORM
:
917 return PIPE_FORMAT_R8G8B8A8_SINT
;
919 case PIPE_FORMAT_A8_SNORM
:
920 return PIPE_FORMAT_A8_SINT
;
921 case PIPE_FORMAT_L8_SNORM
:
922 return PIPE_FORMAT_L8_SINT
;
923 case PIPE_FORMAT_L8A8_SNORM
:
924 return PIPE_FORMAT_L8A8_SINT
;
925 case PIPE_FORMAT_I8_SNORM
:
926 return PIPE_FORMAT_I8_SINT
;
928 case PIPE_FORMAT_R8G8B8X8_SNORM
:
929 return PIPE_FORMAT_R8G8B8X8_SINT
;
930 case PIPE_FORMAT_R8A8_SNORM
:
931 return PIPE_FORMAT_R8A8_SINT
;
932 case PIPE_FORMAT_G8R8_SNORM
:
933 return PIPE_FORMAT_G8R8_SINT
;
934 case PIPE_FORMAT_A8B8G8R8_SNORM
:
935 return PIPE_FORMAT_A8B8G8R8_SINT
;
936 case PIPE_FORMAT_X8B8G8R8_SNORM
:
937 return PIPE_FORMAT_X8B8G8R8_SINT
;