1 /* -*- Mode: c; c-basic-offset: 4; tab-width: 8; indent-tabs-mode: t; -*- */
3 * Copyright © 2000 SuSE, Inc.
4 * Copyright © 2007 Red Hat, Inc.
6 * Permission to use, copy, modify, distribute, and sell this software and its
7 * documentation for any purpose is hereby granted without fee, provided that
8 * the above copyright notice appear in all copies and that both that
9 * copyright notice and this permission notice appear in supporting
10 * documentation, and that the name of SuSE not be used in advertising or
11 * publicity pertaining to distribution of the software without specific,
12 * written prior permission. SuSE makes no representations about the
13 * suitability of this software for any purpose. It is provided "as is"
14 * without express or implied warranty.
16 * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
18 * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
19 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
20 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
21 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
23 * Author: Keith Packard, SuSE, Inc.
29 #include "pixman-private.h"
33 static force_inline pixman_implementation_t *
34 get_implementation (void)
36 static pixman_implementation_t *global_implementation;
38 if (!global_implementation)
39 global_implementation = _pixman_choose_implementation ();
41 return global_implementation;
44 typedef struct operator_info_t operator_info_t;
46 struct operator_info_t
48 uint8_t opaque_info[4];
51 #define PACK(neither, src, dest, both) \
52 {{ (uint8_t)PIXMAN_OP_ ## neither, \
53 (uint8_t)PIXMAN_OP_ ## src, \
54 (uint8_t)PIXMAN_OP_ ## dest, \
55 (uint8_t)PIXMAN_OP_ ## both }}
57 static const operator_info_t operator_table[] =
59 /* Neither Opaque Src Opaque Dst Opaque Both Opaque */
60 PACK (CLEAR, CLEAR, CLEAR, CLEAR),
61 PACK (SRC, SRC, SRC, SRC),
62 PACK (DST, DST, DST, DST),
63 PACK (OVER, SRC, OVER, SRC),
64 PACK (OVER_REVERSE, OVER_REVERSE, DST, DST),
65 PACK (IN, IN, SRC, SRC),
66 PACK (IN_REVERSE, DST, IN_REVERSE, DST),
67 PACK (OUT, OUT, CLEAR, CLEAR),
68 PACK (OUT_REVERSE, CLEAR, OUT_REVERSE, CLEAR),
69 PACK (ATOP, IN, OVER, SRC),
70 PACK (ATOP_REVERSE, OVER_REVERSE, IN_REVERSE, DST),
71 PACK (XOR, OUT, OUT_REVERSE, CLEAR),
72 PACK (ADD, ADD, ADD, ADD),
73 PACK (SATURATE, OVER_REVERSE, DST, DST),
78 PACK (CLEAR, CLEAR, CLEAR, CLEAR),
79 PACK (SRC, SRC, SRC, SRC),
80 PACK (DST, DST, DST, DST),
81 PACK (DISJOINT_OVER, DISJOINT_OVER, DISJOINT_OVER, DISJOINT_OVER),
82 PACK (DISJOINT_OVER_REVERSE, DISJOINT_OVER_REVERSE, DISJOINT_OVER_REVERSE, DISJOINT_OVER_REVERSE),
83 PACK (DISJOINT_IN, DISJOINT_IN, DISJOINT_IN, DISJOINT_IN),
84 PACK (DISJOINT_IN_REVERSE, DISJOINT_IN_REVERSE, DISJOINT_IN_REVERSE, DISJOINT_IN_REVERSE),
85 PACK (DISJOINT_OUT, DISJOINT_OUT, DISJOINT_OUT, DISJOINT_OUT),
86 PACK (DISJOINT_OUT_REVERSE, DISJOINT_OUT_REVERSE, DISJOINT_OUT_REVERSE, DISJOINT_OUT_REVERSE),
87 PACK (DISJOINT_ATOP, DISJOINT_ATOP, DISJOINT_ATOP, DISJOINT_ATOP),
88 PACK (DISJOINT_ATOP_REVERSE, DISJOINT_ATOP_REVERSE, DISJOINT_ATOP_REVERSE, DISJOINT_ATOP_REVERSE),
89 PACK (DISJOINT_XOR, DISJOINT_XOR, DISJOINT_XOR, DISJOINT_XOR),
96 PACK (CLEAR, CLEAR, CLEAR, CLEAR),
97 PACK (SRC, SRC, SRC, SRC),
98 PACK (DST, DST, DST, DST),
99 PACK (CONJOINT_OVER, CONJOINT_OVER, CONJOINT_OVER, CONJOINT_OVER),
100 PACK (CONJOINT_OVER_REVERSE, CONJOINT_OVER_REVERSE, CONJOINT_OVER_REVERSE, CONJOINT_OVER_REVERSE),
101 PACK (CONJOINT_IN, CONJOINT_IN, CONJOINT_IN, CONJOINT_IN),
102 PACK (CONJOINT_IN_REVERSE, CONJOINT_IN_REVERSE, CONJOINT_IN_REVERSE, CONJOINT_IN_REVERSE),
103 PACK (CONJOINT_OUT, CONJOINT_OUT, CONJOINT_OUT, CONJOINT_OUT),
104 PACK (CONJOINT_OUT_REVERSE, CONJOINT_OUT_REVERSE, CONJOINT_OUT_REVERSE, CONJOINT_OUT_REVERSE),
105 PACK (CONJOINT_ATOP, CONJOINT_ATOP, CONJOINT_ATOP, CONJOINT_ATOP),
106 PACK (CONJOINT_ATOP_REVERSE, CONJOINT_ATOP_REVERSE, CONJOINT_ATOP_REVERSE, CONJOINT_ATOP_REVERSE),
107 PACK (CONJOINT_XOR, CONJOINT_XOR, CONJOINT_XOR, CONJOINT_XOR),
114 PACK (MULTIPLY, MULTIPLY, MULTIPLY, MULTIPLY),
115 PACK (SCREEN, SCREEN, SCREEN, SCREEN),
116 PACK (OVERLAY, OVERLAY, OVERLAY, OVERLAY),
117 PACK (DARKEN, DARKEN, DARKEN, DARKEN),
118 PACK (LIGHTEN, LIGHTEN, LIGHTEN, LIGHTEN),
119 PACK (COLOR_DODGE, COLOR_DODGE, COLOR_DODGE, COLOR_DODGE),
120 PACK (COLOR_BURN, COLOR_BURN, COLOR_BURN, COLOR_BURN),
121 PACK (HARD_LIGHT, HARD_LIGHT, HARD_LIGHT, HARD_LIGHT),
122 PACK (SOFT_LIGHT, SOFT_LIGHT, SOFT_LIGHT, SOFT_LIGHT),
123 PACK (DIFFERENCE, DIFFERENCE, DIFFERENCE, DIFFERENCE),
124 PACK (EXCLUSION, EXCLUSION, EXCLUSION, EXCLUSION),
125 PACK (HSL_HUE, HSL_HUE, HSL_HUE, HSL_HUE),
126 PACK (HSL_SATURATION, HSL_SATURATION, HSL_SATURATION, HSL_SATURATION),
127 PACK (HSL_COLOR, HSL_COLOR, HSL_COLOR, HSL_COLOR),
128 PACK (HSL_LUMINOSITY, HSL_LUMINOSITY, HSL_LUMINOSITY, HSL_LUMINOSITY),
132 * Optimize the current operator based on opacity of source or destination
133 * The output operator should be mathematically equivalent to the source.
136 optimize_operator (pixman_op_t op,
141 pixman_bool_t is_source_opaque, is_dest_opaque;
144 is_source_opaque = ((src_flags & mask_flags) & FAST_PATH_IS_OPAQUE) != 0;
145 is_dest_opaque = (dst_flags & FAST_PATH_IS_OPAQUE) != 0;
147 opaqueness = ((is_dest_opaque << 1) | is_source_opaque);
149 return operator_table[op].opaque_info[opaqueness];
153 apply_workaround (pixman_image_t *image,
156 uint32_t ** save_bits,
160 if (image && (image->common.flags & FAST_PATH_NEEDS_WORKAROUND))
162 /* Some X servers generate images that point to the
163 * wrong place in memory, but then set the clip region
164 * to point to the right place. Because of an old bug
165 * in pixman, this would actually work.
167 * Here we try and undo the damage
169 int bpp = PIXMAN_FORMAT_BPP (image->bits.format) / 8;
170 pixman_box32_t *extents;
174 extents = pixman_region32_extents (&(image->common.clip_region));
178 *save_bits = image->bits.bits;
182 pixman_region32_translate (&(image->common.clip_region), -dx, -dy);
184 t = (uint8_t *)image->bits.bits;
185 t += dy * image->bits.rowstride * 4 + dx * bpp;
186 image->bits.bits = (uint32_t *)t;
194 unapply_workaround (pixman_image_t *image, uint32_t *bits, int dx, int dy)
196 if (image && (image->common.flags & FAST_PATH_NEEDS_WORKAROUND))
198 image->bits.bits = bits;
199 pixman_region32_translate (&image->common.clip_region, dx, dy);
204 * Computing composite region
206 static inline pixman_bool_t
207 clip_general_image (pixman_region32_t * region,
208 pixman_region32_t * clip,
212 if (pixman_region32_n_rects (region) == 1 &&
213 pixman_region32_n_rects (clip) == 1)
215 pixman_box32_t * rbox = pixman_region32_rectangles (region, NULL);
216 pixman_box32_t * cbox = pixman_region32_rectangles (clip, NULL);
219 if (rbox->x1 < (v = cbox->x1 + dx))
221 if (rbox->x2 > (v = cbox->x2 + dx))
223 if (rbox->y1 < (v = cbox->y1 + dy))
225 if (rbox->y2 > (v = cbox->y2 + dy))
227 if (rbox->x1 >= rbox->x2 || rbox->y1 >= rbox->y2)
229 pixman_region32_init (region);
233 else if (!pixman_region32_not_empty (clip))
240 pixman_region32_translate (region, -dx, -dy);
242 if (!pixman_region32_intersect (region, region, clip))
246 pixman_region32_translate (region, dx, dy);
249 return pixman_region32_not_empty (region);
252 static inline pixman_bool_t
253 clip_source_image (pixman_region32_t * region,
254 pixman_image_t * image,
258 /* Source clips are ignored, unless they are explicitly turned on
259 * and the clip in question was set by an X client. (Because if
260 * the clip was not set by a client, then it is a hierarchy
261 * clip and those should always be ignored for sources).
263 if (!image->common.clip_sources || !image->common.client_clip)
266 return clip_general_image (region,
267 &image->common.clip_region,
272 * returns FALSE if the final region is empty. Indistinguishable from
273 * an allocation failure, but rendering ignores those anyways.
276 pixman_compute_composite_region32 (pixman_region32_t * region,
277 pixman_image_t * src_image,
278 pixman_image_t * mask_image,
279 pixman_image_t * dst_image,
289 region->extents.x1 = dest_x;
290 region->extents.x2 = dest_x + width;
291 region->extents.y1 = dest_y;
292 region->extents.y2 = dest_y + height;
294 region->extents.x1 = MAX (region->extents.x1, 0);
295 region->extents.y1 = MAX (region->extents.y1, 0);
296 region->extents.x2 = MIN (region->extents.x2, dst_image->bits.width);
297 region->extents.y2 = MIN (region->extents.y2, dst_image->bits.height);
301 /* Check for empty operation */
302 if (region->extents.x1 >= region->extents.x2 ||
303 region->extents.y1 >= region->extents.y2)
305 pixman_region32_init (region);
309 if (dst_image->common.have_clip_region)
311 if (!clip_general_image (region, &dst_image->common.clip_region, 0, 0))
313 pixman_region32_fini (region);
318 if (dst_image->common.alpha_map && dst_image->common.alpha_map->common.have_clip_region)
320 if (!clip_general_image (region, &dst_image->common.alpha_map->common.clip_region,
321 -dst_image->common.alpha_origin_x,
322 -dst_image->common.alpha_origin_y))
324 pixman_region32_fini (region);
329 /* clip against src */
330 if (src_image->common.have_clip_region)
332 if (!clip_source_image (region, src_image, dest_x - src_x, dest_y - src_y))
334 pixman_region32_fini (region);
338 if (src_image->common.alpha_map && src_image->common.alpha_map->common.have_clip_region)
340 if (!clip_source_image (region, (pixman_image_t *)src_image->common.alpha_map,
341 dest_x - (src_x - src_image->common.alpha_origin_x),
342 dest_y - (src_y - src_image->common.alpha_origin_y)))
344 pixman_region32_fini (region);
348 /* clip against mask */
349 if (mask_image && mask_image->common.have_clip_region)
351 if (!clip_source_image (region, mask_image, dest_x - mask_x, dest_y - mask_y))
353 pixman_region32_fini (region);
356 if (mask_image->common.alpha_map && mask_image->common.alpha_map->common.have_clip_region)
358 if (!clip_source_image (region, (pixman_image_t *)mask_image->common.alpha_map,
359 dest_x - (mask_x - mask_image->common.alpha_origin_x),
360 dest_y - (mask_y - mask_image->common.alpha_origin_y)))
362 pixman_region32_fini (region);
372 walk_region_internal (pixman_implementation_t *imp,
374 pixman_image_t * src_image,
375 pixman_image_t * mask_image,
376 pixman_image_t * dst_image,
385 pixman_bool_t src_repeat,
386 pixman_bool_t mask_repeat,
387 pixman_region32_t * region,
388 pixman_composite_func_t composite_rect)
390 int w, h, w_this, h_this;
391 int x_msk, y_msk, x_src, y_src, x_dst, y_dst;
392 int src_dy = src_y - dest_y;
393 int src_dx = src_x - dest_x;
394 int mask_dy = mask_y - dest_y;
395 int mask_dx = mask_x - dest_x;
396 const pixman_box32_t *pbox;
399 pbox = pixman_region32_rectangles (region, &n);
401 /* Fast path for non-repeating sources */
402 if (!src_repeat && !mask_repeat)
406 (*composite_rect) (imp, op,
407 src_image, mask_image, dst_image,
415 pbox->y2 - pbox->y1);
425 h = pbox->y2 - pbox->y1;
426 y_src = pbox->y1 + src_dy;
427 y_msk = pbox->y1 + mask_dy;
433 w = pbox->x2 - pbox->x1;
434 x_src = pbox->x1 + src_dx;
435 x_msk = pbox->x1 + mask_dx;
440 y_msk = MOD (y_msk, mask_image->bits.height);
441 if (h_this > mask_image->bits.height - y_msk)
442 h_this = mask_image->bits.height - y_msk;
447 y_src = MOD (y_src, src_image->bits.height);
448 if (h_this > src_image->bits.height - y_src)
449 h_this = src_image->bits.height - y_src;
458 x_msk = MOD (x_msk, mask_image->bits.width);
459 if (w_this > mask_image->bits.width - x_msk)
460 w_this = mask_image->bits.width - x_msk;
465 x_src = MOD (x_src, src_image->bits.width);
466 if (w_this > src_image->bits.width - x_src)
467 w_this = src_image->bits.width - x_src;
470 (*composite_rect) (imp, op,
471 src_image, mask_image, dst_image,
472 x_src, y_src, x_msk, y_msk, x_dst, y_dst,
491 #define IS_16BIT(x) (((x) >= INT16_MIN) && ((x) <= INT16_MAX))
493 static force_inline uint32_t
494 compute_src_extents_flags (pixman_image_t *image,
495 pixman_box32_t *extents,
499 pixman_box16_t extents16;
502 flags = FAST_PATH_COVERS_CLIP;
504 if (image->common.type != BITS)
507 if (image->common.repeat == PIXMAN_REPEAT_NONE &&
508 (x > extents->x1 || y > extents->y1 ||
509 x + image->bits.width < extents->x2 ||
510 y + image->bits.height < extents->y2))
512 flags &= ~FAST_PATH_COVERS_CLIP;
515 if (IS_16BIT (extents->x1 - x) &&
516 IS_16BIT (extents->y1 - y) &&
517 IS_16BIT (extents->x2 - x) &&
518 IS_16BIT (extents->y2 - y))
520 extents16.x1 = extents->x1 - x;
521 extents16.y1 = extents->y1 - y;
522 extents16.x2 = extents->x2 - x;
523 extents16.y2 = extents->y2 - y;
525 if (!image->common.transform ||
526 pixman_transform_bounds (image->common.transform, &extents16))
528 if (extents16.x1 >= 0 && extents16.y1 >= 0 &&
529 extents16.x2 <= image->bits.width &&
530 extents16.y2 <= image->bits.height)
532 flags |= FAST_PATH_SAMPLES_COVER_CLIP;
537 if (IS_16BIT (extents->x1 - x - 1) &&
538 IS_16BIT (extents->y1 - y - 1) &&
539 IS_16BIT (extents->x2 - x + 1) &&
540 IS_16BIT (extents->y2 - y + 1))
542 extents16.x1 = extents->x1 - x - 1;
543 extents16.y1 = extents->y1 - y - 1;
544 extents16.x2 = extents->x2 - x + 1;
545 extents16.y2 = extents->y2 - y + 1;
547 if (/* src space expanded by one in dest space fits in 16 bit */
548 (!image->common.transform ||
549 pixman_transform_bounds (image->common.transform, &extents16)) &&
550 /* And src image size can be used as 16.16 fixed point */
551 image->bits.width < 0x7fff &&
552 image->bits.height < 0x7fff)
554 /* Then we're "16bit safe" */
555 flags |= FAST_PATH_16BIT_SAFE;
562 #define N_CACHED_FAST_PATHS 8
566 pixman_fast_path_t cache [N_CACHED_FAST_PATHS];
569 PIXMAN_DEFINE_THREAD_LOCAL (cache_t, fast_path_cache);
572 do_composite (pixman_implementation_t *imp,
575 pixman_image_t *mask,
576 pixman_image_t *dest,
586 pixman_format_code_t src_format, mask_format, dest_format;
587 uint32_t src_flags, mask_flags, dest_flags;
588 pixman_region32_t region;
589 pixman_box32_t *extents;
593 int mask_dx, mask_dy;
595 int dest_dx, dest_dy;
596 pixman_bool_t need_workaround;
597 const pixman_fast_path_t *info;
601 src_format = src->common.extended_format_code;
602 src_flags = src->common.flags;
606 mask_format = mask->common.extended_format_code;
607 mask_flags = mask->common.flags;
611 mask_format = PIXMAN_null;
612 mask_flags = FAST_PATH_IS_OPAQUE;
615 dest_format = dest->common.extended_format_code;
616 dest_flags = dest->common.flags;
618 /* Check for pixbufs */
619 if ((mask_format == PIXMAN_a8r8g8b8 || mask_format == PIXMAN_a8b8g8r8) &&
620 (src->type == BITS && src->bits.bits == mask->bits.bits) &&
621 (src->common.repeat == mask->common.repeat) &&
622 (src_x == mask_x && src_y == mask_y))
624 if (src_format == PIXMAN_x8b8g8r8)
625 src_format = mask_format = PIXMAN_pixbuf;
626 else if (src_format == PIXMAN_x8r8g8b8)
627 src_format = mask_format = PIXMAN_rpixbuf;
630 /* Check for workaround */
631 need_workaround = (src_flags | mask_flags | dest_flags) & FAST_PATH_NEEDS_WORKAROUND;
635 apply_workaround (src, &src_x, &src_y, &src_bits, &src_dx, &src_dy);
636 apply_workaround (mask, &mask_x, &mask_y, &mask_bits, &mask_dx, &mask_dy);
637 apply_workaround (dest, &dest_x, &dest_y, &dest_bits, &dest_dx, &dest_dy);
640 pixman_region32_init (®ion);
642 if (!pixman_compute_composite_region32 (
643 ®ion, src, mask, dest,
644 src_x, src_y, mask_x, mask_y, dest_x, dest_y, width, height))
649 extents = pixman_region32_extents (®ion);
651 src_flags |= compute_src_extents_flags (src, extents, dest_x - src_x, dest_y - src_y);
654 mask_flags |= compute_src_extents_flags (mask, extents, dest_x - mask_x, dest_y - mask_y);
657 * Check if we can replace our operator by a simpler one
658 * if the src or dest are opaque. The output operator should be
659 * mathematically equivalent to the source.
661 op = optimize_operator (op, src_flags, mask_flags, dest_flags);
662 if (op == PIXMAN_OP_DST)
665 /* Check cache for fast paths */
666 cache = PIXMAN_GET_THREAD_LOCAL (fast_path_cache);
668 for (i = 0; i < N_CACHED_FAST_PATHS; ++i)
670 info = &(cache->cache[i]);
672 /* Note that we check for equality here, not whether
673 * the cached fast path matches. This is to prevent
674 * us from selecting an overly general fast path
675 * when a more specific one would work.
677 if (info->op == op &&
678 info->src_format == src_format &&
679 info->mask_format == mask_format &&
680 info->dest_format == dest_format &&
681 info->src_flags == src_flags &&
682 info->mask_flags == mask_flags &&
683 info->dest_flags == dest_flags &&
692 info = imp->fast_paths;
694 while (info->op != PIXMAN_OP_NONE)
696 if ((info->op == op || info->op == PIXMAN_OP_any) &&
698 ((info->src_format == src_format) ||
699 (info->src_format == PIXMAN_any)) &&
700 ((info->mask_format == mask_format) ||
701 (info->mask_format == PIXMAN_any)) &&
702 ((info->dest_format == dest_format) ||
703 (info->dest_format == PIXMAN_any)) &&
705 (info->src_flags & src_flags) == info->src_flags &&
706 (info->mask_flags & mask_flags) == info->mask_flags &&
707 (info->dest_flags & dest_flags) == info->dest_flags)
709 /* Set i to the last spot in the cache so that the
710 * move-to-front code below will work
712 i = N_CACHED_FAST_PATHS - 1;
723 /* We didn't find a compositing routine. This should not happen, but if
724 * it somehow does, just exit rather than crash.
729 walk_region_internal (imp, op,
731 src_x, src_y, mask_x, mask_y,
734 (src_flags & FAST_PATH_SIMPLE_REPEAT),
735 (mask_flags & FAST_PATH_SIMPLE_REPEAT),
736 ®ion, info->func);
740 /* Make a copy of info->func, because info->func may change when
741 * we update the cache.
743 pixman_composite_func_t func = info->func;
746 cache->cache[i + 1] = cache->cache[i];
748 cache->cache[0].op = op;
749 cache->cache[0].src_format = src_format;
750 cache->cache[0].src_flags = src_flags;
751 cache->cache[0].mask_format = mask_format;
752 cache->cache[0].mask_flags = mask_flags;
753 cache->cache[0].dest_format = dest_format;
754 cache->cache[0].dest_flags = dest_flags;
755 cache->cache[0].func = func;
761 unapply_workaround (src, src_bits, src_dx, src_dy);
762 unapply_workaround (mask, mask_bits, mask_dx, mask_dy);
763 unapply_workaround (dest, dest_bits, dest_dx, dest_dy);
766 pixman_region32_fini (®ion);
770 pixman_image_composite (pixman_op_t op,
771 pixman_image_t * src,
772 pixman_image_t * mask,
773 pixman_image_t * dest,
783 pixman_image_composite32 (op, src, mask, dest, src_x, src_y,
784 mask_x, mask_y, dest_x, dest_y, width, height);
788 * Work around GCC bug causing crashes in Mozilla with SSE2
790 * When using -msse, gcc generates movdqa instructions assuming that
791 * the stack is 16 byte aligned. Unfortunately some applications, such
792 * as Mozilla and Mono, end up aligning the stack to 4 bytes, which
793 * causes the movdqa instructions to fail.
795 * The __force_align_arg_pointer__ makes gcc generate a prologue that
796 * realigns the stack pointer to 16 bytes.
798 * On x86-64 this is not necessary because the standard ABI already
799 * calls for a 16 byte aligned stack.
801 * See https://bugs.freedesktop.org/show_bug.cgi?id=15693
803 #if defined (USE_SSE2) && defined(__GNUC__) && !defined(__x86_64__) && !defined(__amd64__)
804 __attribute__((__force_align_arg_pointer__))
807 pixman_image_composite32 (pixman_op_t op,
808 pixman_image_t * src,
809 pixman_image_t * mask,
810 pixman_image_t * dest,
820 _pixman_image_validate (src);
822 _pixman_image_validate (mask);
823 _pixman_image_validate (dest);
825 do_composite (get_implementation(), op,
833 PIXMAN_EXPORT pixman_bool_t
834 pixman_blt (uint32_t *src_bits,
847 return _pixman_implementation_blt (get_implementation(),
848 src_bits, dst_bits, src_stride, dst_stride,
855 PIXMAN_EXPORT pixman_bool_t
856 pixman_fill (uint32_t *bits,
865 return _pixman_implementation_fill (
866 get_implementation(), bits, stride, bpp, x, y, width, height, xor);
870 color_to_uint32 (const pixman_color_t *color)
873 (color->alpha >> 8 << 24) |
874 (color->red >> 8 << 16) |
875 (color->green & 0xff00) |
880 color_to_pixel (pixman_color_t * color,
882 pixman_format_code_t format)
884 uint32_t c = color_to_uint32 (color);
886 if (!(format == PIXMAN_a8r8g8b8 ||
887 format == PIXMAN_x8r8g8b8 ||
888 format == PIXMAN_a8b8g8r8 ||
889 format == PIXMAN_x8b8g8r8 ||
890 format == PIXMAN_b8g8r8a8 ||
891 format == PIXMAN_b8g8r8x8 ||
892 format == PIXMAN_r5g6b5 ||
893 format == PIXMAN_b5g6r5 ||
894 format == PIXMAN_a8))
899 if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_ABGR)
901 c = ((c & 0xff000000) >> 0) |
902 ((c & 0x00ff0000) >> 16) |
903 ((c & 0x0000ff00) >> 0) |
904 ((c & 0x000000ff) << 16);
906 if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_BGRA)
908 c = ((c & 0xff000000) >> 24) |
909 ((c & 0x00ff0000) >> 8) |
910 ((c & 0x0000ff00) << 8) |
911 ((c & 0x000000ff) << 24);
914 if (format == PIXMAN_a8)
916 else if (format == PIXMAN_r5g6b5 ||
917 format == PIXMAN_b5g6r5)
918 c = CONVERT_8888_TO_0565 (c);
921 printf ("color: %x %x %x %x\n", color->alpha, color->red, color->green, color->blue);
922 printf ("pixel: %x\n", c);
929 PIXMAN_EXPORT pixman_bool_t
930 pixman_image_fill_rectangles (pixman_op_t op,
931 pixman_image_t * dest,
932 pixman_color_t * color,
934 const pixman_rectangle16_t *rects)
936 pixman_box32_t stack_boxes[6];
937 pixman_box32_t *boxes;
938 pixman_bool_t result;
943 boxes = pixman_malloc_ab (sizeof (pixman_box32_t), n_rects);
952 for (i = 0; i < n_rects; ++i)
954 boxes[i].x1 = rects[i].x;
955 boxes[i].y1 = rects[i].y;
956 boxes[i].x2 = boxes[i].x1 + rects[i].width;
957 boxes[i].y2 = boxes[i].y1 + rects[i].height;
960 result = pixman_image_fill_boxes (op, dest, color, n_rects, boxes);
962 if (boxes != stack_boxes)
968 PIXMAN_EXPORT pixman_bool_t
969 pixman_image_fill_boxes (pixman_op_t op,
970 pixman_image_t * dest,
971 pixman_color_t * color,
973 const pixman_box32_t *boxes)
975 pixman_image_t *solid;
979 _pixman_image_validate (dest);
981 if (color->alpha == 0xffff)
983 if (op == PIXMAN_OP_OVER)
987 if (op == PIXMAN_OP_CLEAR)
999 if (op == PIXMAN_OP_SRC)
1003 if (color_to_pixel (color, &pixel, dest->bits.format))
1005 pixman_region32_t fill_region;
1007 pixman_box32_t *rects;
1009 if (!pixman_region32_init_rects (&fill_region, boxes, n_boxes))
1012 if (dest->common.have_clip_region)
1014 if (!pixman_region32_intersect (&fill_region,
1016 &dest->common.clip_region))
1020 rects = pixman_region32_rectangles (&fill_region, &n_rects);
1021 for (j = 0; j < n_rects; ++j)
1023 const pixman_box32_t *rect = &(rects[j]);
1024 pixman_fill (dest->bits.bits, dest->bits.rowstride, PIXMAN_FORMAT_BPP (dest->bits.format),
1025 rect->x1, rect->y1, rect->x2 - rect->x1, rect->y2 - rect->y1,
1029 pixman_region32_fini (&fill_region);
1034 solid = pixman_image_create_solid_fill (color);
1038 for (i = 0; i < n_boxes; ++i)
1040 const pixman_box32_t *box = &(boxes[i]);
1042 pixman_image_composite32 (op, solid, NULL, dest,
1045 box->x2 - box->x1, box->y2 - box->y1);
1048 pixman_image_unref (solid);
1056 * Returns the version of the pixman library encoded in a single
1057 * integer as per %PIXMAN_VERSION_ENCODE. The encoding ensures that
1058 * later versions compare greater than earlier versions.
1060 * A run-time comparison to check that pixman's version is greater than
1061 * or equal to version X.Y.Z could be performed as follows:
1063 * <informalexample><programlisting>
1064 * if (pixman_version() >= PIXMAN_VERSION_ENCODE(X,Y,Z)) {...}
1065 * </programlisting></informalexample>
1067 * See also pixman_version_string() as well as the compile-time
1068 * equivalents %PIXMAN_VERSION and %PIXMAN_VERSION_STRING.
1070 * Return value: the encoded version.
1073 pixman_version (void)
1075 return PIXMAN_VERSION;
1079 * pixman_version_string:
1081 * Returns the version of the pixman library as a human-readable string
1082 * of the form "X.Y.Z".
1084 * See also pixman_version() as well as the compile-time equivalents
1085 * %PIXMAN_VERSION_STRING and %PIXMAN_VERSION.
1087 * Return value: a string containing the version.
1089 PIXMAN_EXPORT const char*
1090 pixman_version_string (void)
1092 return PIXMAN_VERSION_STRING;
1096 * pixman_format_supported_source:
1097 * @format: A pixman_format_code_t format
1099 * Return value: whether the provided format code is a supported
1100 * format for a pixman surface used as a source in
1103 * Currently, all pixman_format_code_t values are supported.
1105 PIXMAN_EXPORT pixman_bool_t
1106 pixman_format_supported_source (pixman_format_code_t format)
1110 /* 32 bpp formats */
1111 case PIXMAN_a2b10g10r10:
1112 case PIXMAN_x2b10g10r10:
1113 case PIXMAN_a2r10g10b10:
1114 case PIXMAN_x2r10g10b10:
1115 case PIXMAN_a8r8g8b8:
1116 case PIXMAN_x8r8g8b8:
1117 case PIXMAN_a8b8g8r8:
1118 case PIXMAN_x8b8g8r8:
1119 case PIXMAN_b8g8r8a8:
1120 case PIXMAN_b8g8r8x8:
1125 /* 16 bpp formats */
1126 case PIXMAN_a1r5g5b5:
1127 case PIXMAN_x1r5g5b5:
1128 case PIXMAN_a1b5g5r5:
1129 case PIXMAN_x1b5g5r5:
1130 case PIXMAN_a4r4g4b4:
1131 case PIXMAN_x4r4g4b4:
1132 case PIXMAN_a4b4g4r4:
1133 case PIXMAN_x4b4g4r4:
1138 case PIXMAN_a2r2g2b2:
1139 case PIXMAN_a2b2g2r2:
1143 /* Collides with PIXMAN_c8
1146 /* Collides with PIXMAN_g8
1153 case PIXMAN_a1r1g1b1:
1154 case PIXMAN_a1b1g1r1:
1171 * pixman_format_supported_destination:
1172 * @format: A pixman_format_code_t format
1174 * Return value: whether the provided format code is a supported
1175 * format for a pixman surface used as a destination in
1178 * Currently, all pixman_format_code_t values are supported
1179 * except for the YUV formats.
1181 PIXMAN_EXPORT pixman_bool_t
1182 pixman_format_supported_destination (pixman_format_code_t format)
1184 /* YUV formats cannot be written to at the moment */
1185 if (format == PIXMAN_yuy2 || format == PIXMAN_yv12)
1188 return pixman_format_supported_source (format);
1191 PIXMAN_EXPORT pixman_bool_t
1192 pixman_compute_composite_region (pixman_region16_t * region,
1193 pixman_image_t * src_image,
1194 pixman_image_t * mask_image,
1195 pixman_image_t * dst_image,
1205 pixman_region32_t r32;
1206 pixman_bool_t retval;
1208 pixman_region32_init (&r32);
1210 retval = pixman_compute_composite_region32 (
1211 &r32, src_image, mask_image, dst_image,
1212 src_x, src_y, mask_x, mask_y, dest_x, dest_y,
1217 if (!pixman_region16_copy_from_region32 (region, &r32))
1221 pixman_region32_fini (&r32);