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 N_CACHED_FAST_PATHS 8
497 pixman_implementation_t * imp;
498 pixman_fast_path_t fast_path;
499 } cache [N_CACHED_FAST_PATHS];
502 PIXMAN_DEFINE_THREAD_LOCAL (cache_t, fast_path_cache);
504 static force_inline void
505 lookup_composite_function (pixman_op_t op,
506 pixman_format_code_t src_format,
508 pixman_format_code_t mask_format,
510 pixman_format_code_t dest_format,
512 pixman_implementation_t **out_imp,
513 pixman_composite_func_t *out_func)
515 pixman_implementation_t *imp;
519 /* Check cache for fast paths */
520 cache = PIXMAN_GET_THREAD_LOCAL (fast_path_cache);
522 for (i = 0; i < N_CACHED_FAST_PATHS; ++i)
524 const pixman_fast_path_t *info = &(cache->cache[i].fast_path);
526 /* Note that we check for equality here, not whether
527 * the cached fast path matches. This is to prevent
528 * us from selecting an overly general fast path
529 * when a more specific one would work.
531 if (info->op == op &&
532 info->src_format == src_format &&
533 info->mask_format == mask_format &&
534 info->dest_format == dest_format &&
535 info->src_flags == src_flags &&
536 info->mask_flags == mask_flags &&
537 info->dest_flags == dest_flags &&
540 *out_imp = cache->cache[i].imp;
541 *out_func = cache->cache[i].fast_path.func;
547 for (imp = get_implementation (); imp != NULL; imp = imp->delegate)
549 const pixman_fast_path_t *info = imp->fast_paths;
551 while (info->op != PIXMAN_OP_NONE)
553 if ((info->op == op || info->op == PIXMAN_OP_any) &&
555 ((info->src_format == src_format) ||
556 (info->src_format == PIXMAN_any)) &&
557 ((info->mask_format == mask_format) ||
558 (info->mask_format == PIXMAN_any)) &&
559 ((info->dest_format == dest_format) ||
560 (info->dest_format == PIXMAN_any)) &&
562 (info->src_flags & src_flags) == info->src_flags &&
563 (info->mask_flags & mask_flags) == info->mask_flags &&
564 (info->dest_flags & dest_flags) == info->dest_flags)
567 *out_func = info->func;
569 /* Set i to the last spot in the cache so that the
570 * move-to-front code below will work
572 i = N_CACHED_FAST_PATHS - 1;
586 cache->cache[i + 1] = cache->cache[i];
588 cache->cache[0].imp = *out_imp;
589 cache->cache[0].fast_path.op = op;
590 cache->cache[0].fast_path.src_format = src_format;
591 cache->cache[0].fast_path.src_flags = src_flags;
592 cache->cache[0].fast_path.mask_format = mask_format;
593 cache->cache[0].fast_path.mask_flags = mask_flags;
594 cache->cache[0].fast_path.dest_format = dest_format;
595 cache->cache[0].fast_path.dest_flags = dest_flags;
596 cache->cache[0].fast_path.func = *out_func;
601 compute_sample_extents (pixman_transform_t *transform,
602 pixman_box32_t *extents, int x, int y,
603 pixman_fixed_t x_off, pixman_fixed_t y_off,
604 pixman_fixed_t width, pixman_fixed_t height)
606 pixman_fixed_t x1, y1, x2, y2;
607 pixman_fixed_48_16_t tx1, ty1, tx2, ty2;
609 /* We have checked earlier that (extents->x1 - x) etc. fit in a pixman_fixed_t */
610 x1 = (pixman_fixed_48_16_t)pixman_int_to_fixed (extents->x1 - x) + pixman_fixed_1 / 2;
611 y1 = (pixman_fixed_48_16_t)pixman_int_to_fixed (extents->y1 - y) + pixman_fixed_1 / 2;
612 x2 = (pixman_fixed_48_16_t)pixman_int_to_fixed (extents->x2 - x) - pixman_fixed_1 / 2;
613 y2 = (pixman_fixed_48_16_t)pixman_int_to_fixed (extents->y2 - y) - pixman_fixed_1 / 2;
617 tx1 = (pixman_fixed_48_16_t)x1;
618 ty1 = (pixman_fixed_48_16_t)y1;
619 tx2 = (pixman_fixed_48_16_t)x2;
620 ty2 = (pixman_fixed_48_16_t)y2;
626 for (i = 0; i < 4; ++i)
628 pixman_fixed_48_16_t tx, ty;
631 v.vector[0] = (i & 0x01)? x1 : x2;
632 v.vector[1] = (i & 0x02)? y1 : y2;
633 v.vector[2] = pixman_fixed_1;
635 if (!pixman_transform_point (transform, &v))
638 tx = (pixman_fixed_48_16_t)v.vector[0];
639 ty = (pixman_fixed_48_16_t)v.vector[1];
662 /* Expand the source area by a tiny bit so account of different rounding that
663 * may happen during sampling. Note that (8 * pixman_fixed_e) is very far from
664 * 0.5 so this won't cause the area computed to be overly pessimistic.
666 tx1 += x_off - 8 * pixman_fixed_e;
667 ty1 += y_off - 8 * pixman_fixed_e;
668 tx2 += x_off + width + 8 * pixman_fixed_e;
669 ty2 += y_off + height + 8 * pixman_fixed_e;
671 if (tx1 < pixman_min_fixed_48_16 || tx1 > pixman_max_fixed_48_16 ||
672 ty1 < pixman_min_fixed_48_16 || ty1 > pixman_max_fixed_48_16 ||
673 tx2 < pixman_min_fixed_48_16 || tx2 > pixman_max_fixed_48_16 ||
674 ty2 < pixman_min_fixed_48_16 || ty2 > pixman_max_fixed_48_16)
680 extents->x1 = pixman_fixed_to_int (tx1);
681 extents->y1 = pixman_fixed_to_int (ty1);
682 extents->x2 = pixman_fixed_to_int (tx2) + 1;
683 extents->y2 = pixman_fixed_to_int (ty2) + 1;
689 #define IS_16BIT(x) (((x) >= INT16_MIN) && ((x) <= INT16_MAX))
692 analyze_extent (pixman_image_t *image, int x, int y,
693 const pixman_box32_t *extents, uint32_t *flags)
695 pixman_transform_t *transform;
696 pixman_fixed_t *params;
697 pixman_fixed_t x_off, y_off;
698 pixman_fixed_t width, height;
701 *flags |= FAST_PATH_COVERS_CLIP;
705 transform = image->common.transform;
706 if (image->common.type == BITS)
708 /* During repeat mode calculations we might convert the
709 * width/height of an image to fixed 16.16, so we need
710 * them to be smaller than 16 bits.
712 if (image->bits.width >= 0x7fff || image->bits.height >= 0x7fff)
715 if (image->common.repeat == PIXMAN_REPEAT_NONE &&
716 (x > extents->x1 || y > extents->y1 ||
717 x + image->bits.width < extents->x2 ||
718 y + image->bits.height < extents->y2))
720 (*flags) &= ~FAST_PATH_COVERS_CLIP;
724 /* Some compositing functions walk one step
725 * outside the destination rectangle, so we
726 * check here that the expanded-by-one source
727 * extents in destination space fits in 16 bits
729 if (!IS_16BIT (extents->x1 - x - 1) ||
730 !IS_16BIT (extents->y1 - y - 1) ||
731 !IS_16BIT (extents->x2 - x + 1) ||
732 !IS_16BIT (extents->y2 - y + 1))
737 if (image->common.type == BITS)
739 switch (image->common.filter)
741 case PIXMAN_FILTER_CONVOLUTION:
742 params = image->common.filter_params;
743 x_off = - pixman_fixed_e - ((params[0] - pixman_fixed_1) >> 1);
744 y_off = - pixman_fixed_e - ((params[1] - pixman_fixed_1) >> 1);
749 case PIXMAN_FILTER_GOOD:
750 case PIXMAN_FILTER_BEST:
751 case PIXMAN_FILTER_BILINEAR:
752 x_off = - pixman_fixed_1 / 2;
753 y_off = - pixman_fixed_1 / 2;
754 width = pixman_fixed_1;
755 height = pixman_fixed_1;
758 case PIXMAN_FILTER_FAST:
759 case PIXMAN_FILTER_NEAREST:
760 x_off = - pixman_fixed_e;
761 y_off = - pixman_fixed_e;
778 /* Check that the extents expanded by one don't overflow. This ensures that
779 * compositing functions can simply walk the source space using 16.16 variables
780 * without worrying about overflow.
782 ex.x1 = extents->x1 - 1;
783 ex.y1 = extents->y1 - 1;
784 ex.x2 = extents->x2 + 1;
785 ex.y2 = extents->y2 + 1;
787 if (!compute_sample_extents (transform, &ex, x, y, x_off, y_off, width, height))
790 /* Check whether the non-expanded, transformed extent is entirely within
791 * the source image, and set the FAST_PATH_SAMPLES_COVER_CLIP if it is.
794 if (compute_sample_extents (transform, &ex, x, y, x_off, y_off, width, height))
796 if (ex.x1 >= 0 && ex.y1 >= 0 && ex.x2 <= image->bits.width && ex.y2 <= image->bits.height)
797 *flags |= FAST_PATH_SAMPLES_COVER_CLIP;
804 do_composite (pixman_op_t op,
806 pixman_image_t *mask,
807 pixman_image_t *dest,
817 pixman_format_code_t src_format, mask_format, dest_format;
818 uint32_t src_flags, mask_flags, dest_flags;
819 pixman_region32_t region;
820 pixman_box32_t *extents;
824 int mask_dx, mask_dy;
826 int dest_dx, dest_dy;
827 pixman_bool_t need_workaround;
828 pixman_implementation_t *imp;
829 pixman_composite_func_t func;
831 src_format = src->common.extended_format_code;
832 src_flags = src->common.flags;
836 mask_format = mask->common.extended_format_code;
837 mask_flags = mask->common.flags;
841 mask_format = PIXMAN_null;
842 mask_flags = FAST_PATH_IS_OPAQUE;
845 dest_format = dest->common.extended_format_code;
846 dest_flags = dest->common.flags;
848 /* Check for pixbufs */
849 if ((mask_format == PIXMAN_a8r8g8b8 || mask_format == PIXMAN_a8b8g8r8) &&
850 (src->type == BITS && src->bits.bits == mask->bits.bits) &&
851 (src->common.repeat == mask->common.repeat) &&
852 (src_x == mask_x && src_y == mask_y))
854 if (src_format == PIXMAN_x8b8g8r8)
855 src_format = mask_format = PIXMAN_pixbuf;
856 else if (src_format == PIXMAN_x8r8g8b8)
857 src_format = mask_format = PIXMAN_rpixbuf;
860 /* Check for workaround */
861 need_workaround = (src_flags | mask_flags | dest_flags) & FAST_PATH_NEEDS_WORKAROUND;
865 apply_workaround (src, &src_x, &src_y, &src_bits, &src_dx, &src_dy);
866 apply_workaround (mask, &mask_x, &mask_y, &mask_bits, &mask_dx, &mask_dy);
867 apply_workaround (dest, &dest_x, &dest_y, &dest_bits, &dest_dx, &dest_dy);
870 pixman_region32_init (®ion);
872 if (!pixman_compute_composite_region32 (
873 ®ion, src, mask, dest,
874 src_x, src_y, mask_x, mask_y, dest_x, dest_y, width, height))
879 extents = pixman_region32_extents (®ion);
881 if (!analyze_extent (src, dest_x - src_x, dest_y - src_y, extents, &src_flags))
884 if (!analyze_extent (mask, dest_x - mask_x, dest_y - mask_y, extents, &mask_flags))
888 * Check if we can replace our operator by a simpler one
889 * if the src or dest are opaque. The output operator should be
890 * mathematically equivalent to the source.
892 op = optimize_operator (op, src_flags, mask_flags, dest_flags);
893 if (op == PIXMAN_OP_DST)
896 lookup_composite_function (op,
897 src_format, src_flags,
898 mask_format, mask_flags,
899 dest_format, dest_flags,
902 walk_region_internal (imp, op,
904 src_x, src_y, mask_x, mask_y,
907 (src_flags & FAST_PATH_SIMPLE_REPEAT),
908 (mask_flags & FAST_PATH_SIMPLE_REPEAT),
914 unapply_workaround (src, src_bits, src_dx, src_dy);
915 unapply_workaround (mask, mask_bits, mask_dx, mask_dy);
916 unapply_workaround (dest, dest_bits, dest_dx, dest_dy);
919 pixman_region32_fini (®ion);
923 pixman_image_composite (pixman_op_t op,
924 pixman_image_t * src,
925 pixman_image_t * mask,
926 pixman_image_t * dest,
936 pixman_image_composite32 (op, src, mask, dest, src_x, src_y,
937 mask_x, mask_y, dest_x, dest_y, width, height);
941 * Work around GCC bug causing crashes in Mozilla with SSE2
943 * When using -msse, gcc generates movdqa instructions assuming that
944 * the stack is 16 byte aligned. Unfortunately some applications, such
945 * as Mozilla and Mono, end up aligning the stack to 4 bytes, which
946 * causes the movdqa instructions to fail.
948 * The __force_align_arg_pointer__ makes gcc generate a prologue that
949 * realigns the stack pointer to 16 bytes.
951 * On x86-64 this is not necessary because the standard ABI already
952 * calls for a 16 byte aligned stack.
954 * See https://bugs.freedesktop.org/show_bug.cgi?id=15693
956 #if defined (USE_SSE2) && defined(__GNUC__) && !defined(__x86_64__) && !defined(__amd64__)
957 __attribute__((__force_align_arg_pointer__))
960 pixman_image_composite32 (pixman_op_t op,
961 pixman_image_t * src,
962 pixman_image_t * mask,
963 pixman_image_t * dest,
973 _pixman_image_validate (src);
975 _pixman_image_validate (mask);
976 _pixman_image_validate (dest);
986 PIXMAN_EXPORT pixman_bool_t
987 pixman_blt (uint32_t *src_bits,
1000 return _pixman_implementation_blt (get_implementation(),
1001 src_bits, dst_bits, src_stride, dst_stride,
1008 PIXMAN_EXPORT pixman_bool_t
1009 pixman_fill (uint32_t *bits,
1018 return _pixman_implementation_fill (
1019 get_implementation(), bits, stride, bpp, x, y, width, height, xor);
1023 color_to_uint32 (const pixman_color_t *color)
1026 (color->alpha >> 8 << 24) |
1027 (color->red >> 8 << 16) |
1028 (color->green & 0xff00) |
1032 static pixman_bool_t
1033 color_to_pixel (pixman_color_t * color,
1035 pixman_format_code_t format)
1037 uint32_t c = color_to_uint32 (color);
1039 if (!(format == PIXMAN_a8r8g8b8 ||
1040 format == PIXMAN_x8r8g8b8 ||
1041 format == PIXMAN_a8b8g8r8 ||
1042 format == PIXMAN_x8b8g8r8 ||
1043 format == PIXMAN_b8g8r8a8 ||
1044 format == PIXMAN_b8g8r8x8 ||
1045 format == PIXMAN_r5g6b5 ||
1046 format == PIXMAN_b5g6r5 ||
1047 format == PIXMAN_a8))
1052 if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_ABGR)
1054 c = ((c & 0xff000000) >> 0) |
1055 ((c & 0x00ff0000) >> 16) |
1056 ((c & 0x0000ff00) >> 0) |
1057 ((c & 0x000000ff) << 16);
1059 if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_BGRA)
1061 c = ((c & 0xff000000) >> 24) |
1062 ((c & 0x00ff0000) >> 8) |
1063 ((c & 0x0000ff00) << 8) |
1064 ((c & 0x000000ff) << 24);
1067 if (format == PIXMAN_a8)
1069 else if (format == PIXMAN_r5g6b5 ||
1070 format == PIXMAN_b5g6r5)
1071 c = CONVERT_8888_TO_0565 (c);
1074 printf ("color: %x %x %x %x\n", color->alpha, color->red, color->green, color->blue);
1075 printf ("pixel: %x\n", c);
1082 PIXMAN_EXPORT pixman_bool_t
1083 pixman_image_fill_rectangles (pixman_op_t op,
1084 pixman_image_t * dest,
1085 pixman_color_t * color,
1087 const pixman_rectangle16_t *rects)
1089 pixman_box32_t stack_boxes[6];
1090 pixman_box32_t *boxes;
1091 pixman_bool_t result;
1096 boxes = pixman_malloc_ab (sizeof (pixman_box32_t), n_rects);
1102 boxes = stack_boxes;
1105 for (i = 0; i < n_rects; ++i)
1107 boxes[i].x1 = rects[i].x;
1108 boxes[i].y1 = rects[i].y;
1109 boxes[i].x2 = boxes[i].x1 + rects[i].width;
1110 boxes[i].y2 = boxes[i].y1 + rects[i].height;
1113 result = pixman_image_fill_boxes (op, dest, color, n_rects, boxes);
1115 if (boxes != stack_boxes)
1121 PIXMAN_EXPORT pixman_bool_t
1122 pixman_image_fill_boxes (pixman_op_t op,
1123 pixman_image_t * dest,
1124 pixman_color_t * color,
1126 const pixman_box32_t *boxes)
1128 pixman_image_t *solid;
1132 _pixman_image_validate (dest);
1134 if (color->alpha == 0xffff)
1136 if (op == PIXMAN_OP_OVER)
1140 if (op == PIXMAN_OP_CLEAR)
1152 if (op == PIXMAN_OP_SRC)
1156 if (color_to_pixel (color, &pixel, dest->bits.format))
1158 pixman_region32_t fill_region;
1160 pixman_box32_t *rects;
1162 if (!pixman_region32_init_rects (&fill_region, boxes, n_boxes))
1165 if (dest->common.have_clip_region)
1167 if (!pixman_region32_intersect (&fill_region,
1169 &dest->common.clip_region))
1173 rects = pixman_region32_rectangles (&fill_region, &n_rects);
1174 for (j = 0; j < n_rects; ++j)
1176 const pixman_box32_t *rect = &(rects[j]);
1177 pixman_fill (dest->bits.bits, dest->bits.rowstride, PIXMAN_FORMAT_BPP (dest->bits.format),
1178 rect->x1, rect->y1, rect->x2 - rect->x1, rect->y2 - rect->y1,
1182 pixman_region32_fini (&fill_region);
1187 solid = pixman_image_create_solid_fill (color);
1191 for (i = 0; i < n_boxes; ++i)
1193 const pixman_box32_t *box = &(boxes[i]);
1195 pixman_image_composite32 (op, solid, NULL, dest,
1198 box->x2 - box->x1, box->y2 - box->y1);
1201 pixman_image_unref (solid);
1209 * Returns the version of the pixman library encoded in a single
1210 * integer as per %PIXMAN_VERSION_ENCODE. The encoding ensures that
1211 * later versions compare greater than earlier versions.
1213 * A run-time comparison to check that pixman's version is greater than
1214 * or equal to version X.Y.Z could be performed as follows:
1216 * <informalexample><programlisting>
1217 * if (pixman_version() >= PIXMAN_VERSION_ENCODE(X,Y,Z)) {...}
1218 * </programlisting></informalexample>
1220 * See also pixman_version_string() as well as the compile-time
1221 * equivalents %PIXMAN_VERSION and %PIXMAN_VERSION_STRING.
1223 * Return value: the encoded version.
1226 pixman_version (void)
1228 return PIXMAN_VERSION;
1232 * pixman_version_string:
1234 * Returns the version of the pixman library as a human-readable string
1235 * of the form "X.Y.Z".
1237 * See also pixman_version() as well as the compile-time equivalents
1238 * %PIXMAN_VERSION_STRING and %PIXMAN_VERSION.
1240 * Return value: a string containing the version.
1242 PIXMAN_EXPORT const char*
1243 pixman_version_string (void)
1245 return PIXMAN_VERSION_STRING;
1249 * pixman_format_supported_source:
1250 * @format: A pixman_format_code_t format
1252 * Return value: whether the provided format code is a supported
1253 * format for a pixman surface used as a source in
1256 * Currently, all pixman_format_code_t values are supported.
1258 PIXMAN_EXPORT pixman_bool_t
1259 pixman_format_supported_source (pixman_format_code_t format)
1263 /* 32 bpp formats */
1264 case PIXMAN_a2b10g10r10:
1265 case PIXMAN_x2b10g10r10:
1266 case PIXMAN_a2r10g10b10:
1267 case PIXMAN_x2r10g10b10:
1268 case PIXMAN_a8r8g8b8:
1269 case PIXMAN_x8r8g8b8:
1270 case PIXMAN_a8b8g8r8:
1271 case PIXMAN_x8b8g8r8:
1272 case PIXMAN_b8g8r8a8:
1273 case PIXMAN_b8g8r8x8:
1278 case PIXMAN_x14r6g6b6:
1279 /* 16 bpp formats */
1280 case PIXMAN_a1r5g5b5:
1281 case PIXMAN_x1r5g5b5:
1282 case PIXMAN_a1b5g5r5:
1283 case PIXMAN_x1b5g5r5:
1284 case PIXMAN_a4r4g4b4:
1285 case PIXMAN_x4r4g4b4:
1286 case PIXMAN_a4b4g4r4:
1287 case PIXMAN_x4b4g4r4:
1292 case PIXMAN_a2r2g2b2:
1293 case PIXMAN_a2b2g2r2:
1297 /* Collides with PIXMAN_c8
1300 /* Collides with PIXMAN_g8
1307 case PIXMAN_a1r1g1b1:
1308 case PIXMAN_a1b1g1r1:
1325 * pixman_format_supported_destination:
1326 * @format: A pixman_format_code_t format
1328 * Return value: whether the provided format code is a supported
1329 * format for a pixman surface used as a destination in
1332 * Currently, all pixman_format_code_t values are supported
1333 * except for the YUV formats.
1335 PIXMAN_EXPORT pixman_bool_t
1336 pixman_format_supported_destination (pixman_format_code_t format)
1338 /* YUV formats cannot be written to at the moment */
1339 if (format == PIXMAN_yuy2 || format == PIXMAN_yv12)
1342 return pixman_format_supported_source (format);
1345 PIXMAN_EXPORT pixman_bool_t
1346 pixman_compute_composite_region (pixman_region16_t * region,
1347 pixman_image_t * src_image,
1348 pixman_image_t * mask_image,
1349 pixman_image_t * dst_image,
1359 pixman_region32_t r32;
1360 pixman_bool_t retval;
1362 pixman_region32_init (&r32);
1364 retval = pixman_compute_composite_region32 (
1365 &r32, src_image, mask_image, dst_image,
1366 src_x, src_y, mask_x, mask_y, dest_x, dest_y,
1371 if (!pixman_region16_copy_from_region32 (region, &r32))
1375 pixman_region32_fini (&r32);