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 pixman_implementation_t *global_implementation;
35 #ifdef TOOLCHAIN_SUPPORTS_ATTRIBUTE_CONSTRUCTOR
36 static void __attribute__((constructor))
37 pixman_constructor (void)
39 global_implementation = _pixman_choose_implementation ();
43 static force_inline pixman_implementation_t *
44 get_implementation (void)
46 #ifndef TOOLCHAIN_SUPPORTS_ATTRIBUTE_CONSTRUCTOR
47 if (!global_implementation)
48 global_implementation = _pixman_choose_implementation ();
50 return global_implementation;
53 typedef struct operator_info_t operator_info_t;
55 struct operator_info_t
57 uint8_t opaque_info[4];
60 #define PACK(neither, src, dest, both) \
61 {{ (uint8_t)PIXMAN_OP_ ## neither, \
62 (uint8_t)PIXMAN_OP_ ## src, \
63 (uint8_t)PIXMAN_OP_ ## dest, \
64 (uint8_t)PIXMAN_OP_ ## both }}
66 static const operator_info_t operator_table[] =
68 /* Neither Opaque Src Opaque Dst Opaque Both Opaque */
69 PACK (CLEAR, CLEAR, CLEAR, CLEAR),
70 PACK (SRC, SRC, SRC, SRC),
71 PACK (DST, DST, DST, DST),
72 PACK (OVER, SRC, OVER, SRC),
73 PACK (OVER_REVERSE, OVER_REVERSE, DST, DST),
74 PACK (IN, IN, SRC, SRC),
75 PACK (IN_REVERSE, DST, IN_REVERSE, DST),
76 PACK (OUT, OUT, CLEAR, CLEAR),
77 PACK (OUT_REVERSE, CLEAR, OUT_REVERSE, CLEAR),
78 PACK (ATOP, IN, OVER, SRC),
79 PACK (ATOP_REVERSE, OVER_REVERSE, IN_REVERSE, DST),
80 PACK (XOR, OUT, OUT_REVERSE, CLEAR),
81 PACK (ADD, ADD, ADD, ADD),
82 PACK (SATURATE, OVER_REVERSE, DST, DST),
87 PACK (CLEAR, CLEAR, CLEAR, CLEAR),
88 PACK (SRC, SRC, SRC, SRC),
89 PACK (DST, DST, DST, DST),
90 PACK (DISJOINT_OVER, DISJOINT_OVER, DISJOINT_OVER, DISJOINT_OVER),
91 PACK (DISJOINT_OVER_REVERSE, DISJOINT_OVER_REVERSE, DISJOINT_OVER_REVERSE, DISJOINT_OVER_REVERSE),
92 PACK (DISJOINT_IN, DISJOINT_IN, DISJOINT_IN, DISJOINT_IN),
93 PACK (DISJOINT_IN_REVERSE, DISJOINT_IN_REVERSE, DISJOINT_IN_REVERSE, DISJOINT_IN_REVERSE),
94 PACK (DISJOINT_OUT, DISJOINT_OUT, DISJOINT_OUT, DISJOINT_OUT),
95 PACK (DISJOINT_OUT_REVERSE, DISJOINT_OUT_REVERSE, DISJOINT_OUT_REVERSE, DISJOINT_OUT_REVERSE),
96 PACK (DISJOINT_ATOP, DISJOINT_ATOP, DISJOINT_ATOP, DISJOINT_ATOP),
97 PACK (DISJOINT_ATOP_REVERSE, DISJOINT_ATOP_REVERSE, DISJOINT_ATOP_REVERSE, DISJOINT_ATOP_REVERSE),
98 PACK (DISJOINT_XOR, DISJOINT_XOR, DISJOINT_XOR, DISJOINT_XOR),
105 PACK (CLEAR, CLEAR, CLEAR, CLEAR),
106 PACK (SRC, SRC, SRC, SRC),
107 PACK (DST, DST, DST, DST),
108 PACK (CONJOINT_OVER, CONJOINT_OVER, CONJOINT_OVER, CONJOINT_OVER),
109 PACK (CONJOINT_OVER_REVERSE, CONJOINT_OVER_REVERSE, CONJOINT_OVER_REVERSE, CONJOINT_OVER_REVERSE),
110 PACK (CONJOINT_IN, CONJOINT_IN, CONJOINT_IN, CONJOINT_IN),
111 PACK (CONJOINT_IN_REVERSE, CONJOINT_IN_REVERSE, CONJOINT_IN_REVERSE, CONJOINT_IN_REVERSE),
112 PACK (CONJOINT_OUT, CONJOINT_OUT, CONJOINT_OUT, CONJOINT_OUT),
113 PACK (CONJOINT_OUT_REVERSE, CONJOINT_OUT_REVERSE, CONJOINT_OUT_REVERSE, CONJOINT_OUT_REVERSE),
114 PACK (CONJOINT_ATOP, CONJOINT_ATOP, CONJOINT_ATOP, CONJOINT_ATOP),
115 PACK (CONJOINT_ATOP_REVERSE, CONJOINT_ATOP_REVERSE, CONJOINT_ATOP_REVERSE, CONJOINT_ATOP_REVERSE),
116 PACK (CONJOINT_XOR, CONJOINT_XOR, CONJOINT_XOR, CONJOINT_XOR),
123 PACK (MULTIPLY, MULTIPLY, MULTIPLY, MULTIPLY),
124 PACK (SCREEN, SCREEN, SCREEN, SCREEN),
125 PACK (OVERLAY, OVERLAY, OVERLAY, OVERLAY),
126 PACK (DARKEN, DARKEN, DARKEN, DARKEN),
127 PACK (LIGHTEN, LIGHTEN, LIGHTEN, LIGHTEN),
128 PACK (COLOR_DODGE, COLOR_DODGE, COLOR_DODGE, COLOR_DODGE),
129 PACK (COLOR_BURN, COLOR_BURN, COLOR_BURN, COLOR_BURN),
130 PACK (HARD_LIGHT, HARD_LIGHT, HARD_LIGHT, HARD_LIGHT),
131 PACK (SOFT_LIGHT, SOFT_LIGHT, SOFT_LIGHT, SOFT_LIGHT),
132 PACK (DIFFERENCE, DIFFERENCE, DIFFERENCE, DIFFERENCE),
133 PACK (EXCLUSION, EXCLUSION, EXCLUSION, EXCLUSION),
134 PACK (HSL_HUE, HSL_HUE, HSL_HUE, HSL_HUE),
135 PACK (HSL_SATURATION, HSL_SATURATION, HSL_SATURATION, HSL_SATURATION),
136 PACK (HSL_COLOR, HSL_COLOR, HSL_COLOR, HSL_COLOR),
137 PACK (HSL_LUMINOSITY, HSL_LUMINOSITY, HSL_LUMINOSITY, HSL_LUMINOSITY),
141 * Optimize the current operator based on opacity of source or destination
142 * The output operator should be mathematically equivalent to the source.
145 optimize_operator (pixman_op_t op,
150 pixman_bool_t is_source_opaque, is_dest_opaque;
152 #define OPAQUE_SHIFT 13
154 COMPILE_TIME_ASSERT (FAST_PATH_IS_OPAQUE == (1 << OPAQUE_SHIFT));
156 is_dest_opaque = (dst_flags & FAST_PATH_IS_OPAQUE);
157 is_source_opaque = ((src_flags & mask_flags) & FAST_PATH_IS_OPAQUE);
159 is_dest_opaque >>= OPAQUE_SHIFT - 1;
160 is_source_opaque >>= OPAQUE_SHIFT;
162 return operator_table[op].opaque_info[is_dest_opaque | is_source_opaque];
166 * Computing composite region
168 static inline pixman_bool_t
169 clip_general_image (pixman_region32_t * region,
170 pixman_region32_t * clip,
174 if (pixman_region32_n_rects (region) == 1 &&
175 pixman_region32_n_rects (clip) == 1)
177 pixman_box32_t * rbox = pixman_region32_rectangles (region, NULL);
178 pixman_box32_t * cbox = pixman_region32_rectangles (clip, NULL);
181 if (rbox->x1 < (v = cbox->x1 + dx))
183 if (rbox->x2 > (v = cbox->x2 + dx))
185 if (rbox->y1 < (v = cbox->y1 + dy))
187 if (rbox->y2 > (v = cbox->y2 + dy))
189 if (rbox->x1 >= rbox->x2 || rbox->y1 >= rbox->y2)
191 pixman_region32_init (region);
195 else if (!pixman_region32_not_empty (clip))
202 pixman_region32_translate (region, -dx, -dy);
204 if (!pixman_region32_intersect (region, region, clip))
208 pixman_region32_translate (region, dx, dy);
211 return pixman_region32_not_empty (region);
214 static inline pixman_bool_t
215 clip_source_image (pixman_region32_t * region,
216 pixman_image_t * image,
220 /* Source clips are ignored, unless they are explicitly turned on
221 * and the clip in question was set by an X client. (Because if
222 * the clip was not set by a client, then it is a hierarchy
223 * clip and those should always be ignored for sources).
225 if (!image->common.clip_sources || !image->common.client_clip)
228 return clip_general_image (region,
229 &image->common.clip_region,
234 * returns FALSE if the final region is empty. Indistinguishable from
235 * an allocation failure, but rendering ignores those anyways.
238 pixman_compute_composite_region32 (pixman_region32_t * region,
239 pixman_image_t * src_image,
240 pixman_image_t * mask_image,
241 pixman_image_t * dest_image,
251 region->extents.x1 = dest_x;
252 region->extents.x2 = dest_x + width;
253 region->extents.y1 = dest_y;
254 region->extents.y2 = dest_y + height;
256 region->extents.x1 = MAX (region->extents.x1, 0);
257 region->extents.y1 = MAX (region->extents.y1, 0);
258 region->extents.x2 = MIN (region->extents.x2, dest_image->bits.width);
259 region->extents.y2 = MIN (region->extents.y2, dest_image->bits.height);
263 /* Check for empty operation */
264 if (region->extents.x1 >= region->extents.x2 ||
265 region->extents.y1 >= region->extents.y2)
267 region->extents.x1 = 0;
268 region->extents.x2 = 0;
269 region->extents.y1 = 0;
270 region->extents.y2 = 0;
274 if (dest_image->common.have_clip_region)
276 if (!clip_general_image (region, &dest_image->common.clip_region, 0, 0))
280 if (dest_image->common.alpha_map)
282 if (!pixman_region32_intersect_rect (region, region,
283 dest_image->common.alpha_origin_x,
284 dest_image->common.alpha_origin_y,
285 dest_image->common.alpha_map->width,
286 dest_image->common.alpha_map->height))
290 if (!pixman_region32_not_empty (region))
292 if (dest_image->common.alpha_map->common.have_clip_region)
294 if (!clip_general_image (region, &dest_image->common.alpha_map->common.clip_region,
295 -dest_image->common.alpha_origin_x,
296 -dest_image->common.alpha_origin_y))
303 /* clip against src */
304 if (src_image->common.have_clip_region)
306 if (!clip_source_image (region, src_image, dest_x - src_x, dest_y - src_y))
309 if (src_image->common.alpha_map && src_image->common.alpha_map->common.have_clip_region)
311 if (!clip_source_image (region, (pixman_image_t *)src_image->common.alpha_map,
312 dest_x - (src_x - src_image->common.alpha_origin_x),
313 dest_y - (src_y - src_image->common.alpha_origin_y)))
318 /* clip against mask */
319 if (mask_image && mask_image->common.have_clip_region)
321 if (!clip_source_image (region, mask_image, dest_x - mask_x, dest_y - mask_y))
324 if (mask_image->common.alpha_map && mask_image->common.alpha_map->common.have_clip_region)
326 if (!clip_source_image (region, (pixman_image_t *)mask_image->common.alpha_map,
327 dest_x - (mask_x - mask_image->common.alpha_origin_x),
328 dest_y - (mask_y - mask_image->common.alpha_origin_y)))
338 #define N_CACHED_FAST_PATHS 8
344 pixman_implementation_t * imp;
345 pixman_fast_path_t fast_path;
346 } cache [N_CACHED_FAST_PATHS];
349 PIXMAN_DEFINE_THREAD_LOCAL (cache_t, fast_path_cache);
351 static force_inline pixman_bool_t
352 lookup_composite_function (pixman_op_t op,
353 pixman_format_code_t src_format,
355 pixman_format_code_t mask_format,
357 pixman_format_code_t dest_format,
359 pixman_implementation_t **out_imp,
360 pixman_composite_func_t *out_func)
362 pixman_implementation_t *imp;
366 /* Check cache for fast paths */
367 cache = PIXMAN_GET_THREAD_LOCAL (fast_path_cache);
369 for (i = 0; i < N_CACHED_FAST_PATHS; ++i)
371 const pixman_fast_path_t *info = &(cache->cache[i].fast_path);
373 /* Note that we check for equality here, not whether
374 * the cached fast path matches. This is to prevent
375 * us from selecting an overly general fast path
376 * when a more specific one would work.
378 if (info->op == op &&
379 info->src_format == src_format &&
380 info->mask_format == mask_format &&
381 info->dest_format == dest_format &&
382 info->src_flags == src_flags &&
383 info->mask_flags == mask_flags &&
384 info->dest_flags == dest_flags &&
387 *out_imp = cache->cache[i].imp;
388 *out_func = cache->cache[i].fast_path.func;
394 for (imp = get_implementation (); imp != NULL; imp = imp->delegate)
396 const pixman_fast_path_t *info = imp->fast_paths;
398 while (info->op != PIXMAN_OP_NONE)
400 if ((info->op == op || info->op == PIXMAN_OP_any) &&
402 ((info->src_format == src_format) ||
403 (info->src_format == PIXMAN_any)) &&
404 ((info->mask_format == mask_format) ||
405 (info->mask_format == PIXMAN_any)) &&
406 ((info->dest_format == dest_format) ||
407 (info->dest_format == PIXMAN_any)) &&
409 (info->src_flags & src_flags) == info->src_flags &&
410 (info->mask_flags & mask_flags) == info->mask_flags &&
411 (info->dest_flags & dest_flags) == info->dest_flags)
414 *out_func = info->func;
416 /* Set i to the last spot in the cache so that the
417 * move-to-front code below will work
419 i = N_CACHED_FAST_PATHS - 1;
433 cache->cache[i + 1] = cache->cache[i];
435 cache->cache[0].imp = *out_imp;
436 cache->cache[0].fast_path.op = op;
437 cache->cache[0].fast_path.src_format = src_format;
438 cache->cache[0].fast_path.src_flags = src_flags;
439 cache->cache[0].fast_path.mask_format = mask_format;
440 cache->cache[0].fast_path.mask_flags = mask_flags;
441 cache->cache[0].fast_path.dest_format = dest_format;
442 cache->cache[0].fast_path.dest_flags = dest_flags;
443 cache->cache[0].fast_path.func = *out_func;
451 pixman_fixed_48_16_t x1;
452 pixman_fixed_48_16_t y1;
453 pixman_fixed_48_16_t x2;
454 pixman_fixed_48_16_t y2;
458 compute_transformed_extents (pixman_transform_t *transform,
459 const pixman_box32_t *extents,
460 box_48_16_t *transformed)
462 pixman_fixed_48_16_t tx1, ty1, tx2, ty2;
463 pixman_fixed_t x1, y1, x2, y2;
466 x1 = pixman_int_to_fixed (extents->x1) + pixman_fixed_1 / 2;
467 y1 = pixman_int_to_fixed (extents->y1) + pixman_fixed_1 / 2;
468 x2 = pixman_int_to_fixed (extents->x2) - pixman_fixed_1 / 2;
469 y2 = pixman_int_to_fixed (extents->y2) - pixman_fixed_1 / 2;
473 transformed->x1 = x1;
474 transformed->y1 = y1;
475 transformed->x2 = x2;
476 transformed->y2 = y2;
481 tx1 = ty1 = INT64_MAX;
482 tx2 = ty2 = INT64_MIN;
484 for (i = 0; i < 4; ++i)
486 pixman_fixed_48_16_t tx, ty;
489 v.vector[0] = (i & 0x01)? x1 : x2;
490 v.vector[1] = (i & 0x02)? y1 : y2;
491 v.vector[2] = pixman_fixed_1;
493 if (!pixman_transform_point (transform, &v))
496 tx = (pixman_fixed_48_16_t)v.vector[0];
497 ty = (pixman_fixed_48_16_t)v.vector[1];
509 transformed->x1 = tx1;
510 transformed->y1 = ty1;
511 transformed->x2 = tx2;
512 transformed->y2 = ty2;
518 compute_sample_extents (pixman_transform_t *transform,
519 pixman_box32_t *extents,
520 pixman_fixed_t x_off, pixman_fixed_t y_off,
521 pixman_fixed_t width, pixman_fixed_t height)
523 box_48_16_t transformed;
525 if (!compute_transformed_extents (transform, extents, &transformed))
528 /* Expand the source area by a tiny bit so account of different rounding that
529 * may happen during sampling. Note that (8 * pixman_fixed_e) is very far from
530 * 0.5 so this won't cause the area computed to be overly pessimistic.
532 transformed.x1 += x_off - 8 * pixman_fixed_e;
533 transformed.y1 += y_off - 8 * pixman_fixed_e;
534 transformed.x2 += x_off + width + 8 * pixman_fixed_e;
535 transformed.y2 += y_off + height + 8 * pixman_fixed_e;
537 if (transformed.x1 < pixman_min_fixed_48_16 || transformed.x1 > pixman_max_fixed_48_16 ||
538 transformed.y1 < pixman_min_fixed_48_16 || transformed.y1 > pixman_max_fixed_48_16 ||
539 transformed.x2 < pixman_min_fixed_48_16 || transformed.x2 > pixman_max_fixed_48_16 ||
540 transformed.y2 < pixman_min_fixed_48_16 || transformed.y2 > pixman_max_fixed_48_16)
546 extents->x1 = pixman_fixed_to_int (transformed.x1);
547 extents->y1 = pixman_fixed_to_int (transformed.y1);
548 extents->x2 = pixman_fixed_to_int (transformed.x2) + 1;
549 extents->y2 = pixman_fixed_to_int (transformed.y2) + 1;
555 #define IS_16BIT(x) (((x) >= INT16_MIN) && ((x) <= INT16_MAX))
558 analyze_extent (pixman_image_t *image,
559 const pixman_box32_t *extents,
562 pixman_transform_t *transform;
563 pixman_fixed_t *params;
564 pixman_fixed_t x_off, y_off;
565 pixman_fixed_t width, height;
571 /* Some compositing functions walk one step
572 * outside the destination rectangle, so we
573 * check here that the expanded-by-one source
574 * extents in destination space fits in 16 bits
576 if (!IS_16BIT (extents->x1 - 1) ||
577 !IS_16BIT (extents->y1 - 1) ||
578 !IS_16BIT (extents->x2 + 1) ||
579 !IS_16BIT (extents->y2 + 1))
584 transform = image->common.transform;
585 if (image->common.type == BITS)
587 /* During repeat mode calculations we might convert the
588 * width/height of an image to fixed 16.16, so we need
589 * them to be smaller than 16 bits.
591 if (image->bits.width >= 0x7fff || image->bits.height >= 0x7fff)
594 #define ID_AND_NEAREST (FAST_PATH_ID_TRANSFORM | FAST_PATH_NEAREST_FILTER)
596 if ((image->common.flags & ID_AND_NEAREST) == ID_AND_NEAREST &&
599 extents->x2 <= image->bits.width &&
600 extents->y2 <= image->bits.height)
602 *flags |= FAST_PATH_SAMPLES_COVER_CLIP;
606 switch (image->common.filter)
608 case PIXMAN_FILTER_CONVOLUTION:
609 params = image->common.filter_params;
610 x_off = - pixman_fixed_e - ((params[0] - pixman_fixed_1) >> 1);
611 y_off = - pixman_fixed_e - ((params[1] - pixman_fixed_1) >> 1);
616 case PIXMAN_FILTER_GOOD:
617 case PIXMAN_FILTER_BEST:
618 case PIXMAN_FILTER_BILINEAR:
619 x_off = - pixman_fixed_1 / 2;
620 y_off = - pixman_fixed_1 / 2;
621 width = pixman_fixed_1;
622 height = pixman_fixed_1;
625 case PIXMAN_FILTER_FAST:
626 case PIXMAN_FILTER_NEAREST:
627 x_off = - pixman_fixed_e;
628 y_off = - pixman_fixed_e;
637 /* Check whether the non-expanded, transformed extent is entirely within
638 * the source image, and set the FAST_PATH_SAMPLES_COVER_CLIP if it is.
641 if (compute_sample_extents (transform, &ex, x_off, y_off, width, height) &&
642 ex.x1 >= 0 && ex.y1 >= 0 &&
643 ex.x2 <= image->bits.width && ex.y2 <= image->bits.height)
645 *flags |= FAST_PATH_SAMPLES_COVER_CLIP;
656 /* Check that the extents expanded by one don't overflow. This ensures that
657 * compositing functions can simply walk the source space using 16.16
658 * variables without worrying about overflow.
660 ex.x1 = extents->x1 - 1;
661 ex.y1 = extents->y1 - 1;
662 ex.x2 = extents->x2 + 1;
663 ex.y2 = extents->y2 + 1;
665 if (!compute_sample_extents (transform, &ex, x_off, y_off, width, height))
672 * Work around GCC bug causing crashes in Mozilla with SSE2
674 * When using -msse, gcc generates movdqa instructions assuming that
675 * the stack is 16 byte aligned. Unfortunately some applications, such
676 * as Mozilla and Mono, end up aligning the stack to 4 bytes, which
677 * causes the movdqa instructions to fail.
679 * The __force_align_arg_pointer__ makes gcc generate a prologue that
680 * realigns the stack pointer to 16 bytes.
682 * On x86-64 this is not necessary because the standard ABI already
683 * calls for a 16 byte aligned stack.
685 * See https://bugs.freedesktop.org/show_bug.cgi?id=15693
687 #if defined (USE_SSE2) && defined(__GNUC__) && !defined(__x86_64__) && !defined(__amd64__)
688 __attribute__((__force_align_arg_pointer__))
691 pixman_image_composite32 (pixman_op_t op,
692 pixman_image_t * src,
693 pixman_image_t * mask,
694 pixman_image_t * dest,
704 pixman_format_code_t src_format, mask_format, dest_format;
705 uint32_t src_flags, mask_flags, dest_flags;
706 pixman_region32_t region;
707 pixman_box32_t extents;
708 pixman_implementation_t *imp;
709 pixman_composite_func_t func;
711 _pixman_image_validate (src);
713 _pixman_image_validate (mask);
714 _pixman_image_validate (dest);
716 src_format = src->common.extended_format_code;
717 src_flags = src->common.flags;
721 mask_format = mask->common.extended_format_code;
722 mask_flags = mask->common.flags;
726 mask_format = PIXMAN_null;
727 mask_flags = FAST_PATH_IS_OPAQUE;
730 dest_format = dest->common.extended_format_code;
731 dest_flags = dest->common.flags;
733 /* Check for pixbufs */
734 if ((mask_format == PIXMAN_a8r8g8b8 || mask_format == PIXMAN_a8b8g8r8) &&
735 (src->type == BITS && src->bits.bits == mask->bits.bits) &&
736 (src->common.repeat == mask->common.repeat) &&
737 (src_x == mask_x && src_y == mask_y))
739 if (src_format == PIXMAN_x8b8g8r8)
740 src_format = mask_format = PIXMAN_pixbuf;
741 else if (src_format == PIXMAN_x8r8g8b8)
742 src_format = mask_format = PIXMAN_rpixbuf;
745 pixman_region32_init (®ion);
747 if (!pixman_compute_composite_region32 (
748 ®ion, src, mask, dest,
749 src_x, src_y, mask_x, mask_y, dest_x, dest_y, width, height))
754 extents = *pixman_region32_extents (®ion);
756 extents.x1 -= dest_x - src_x;
757 extents.y1 -= dest_y - src_y;
758 extents.x2 -= dest_x - src_x;
759 extents.y2 -= dest_y - src_y;
761 if (!analyze_extent (src, &extents, &src_flags))
764 extents.x1 -= src_x - mask_x;
765 extents.y1 -= src_y - mask_y;
766 extents.x2 -= src_x - mask_x;
767 extents.y2 -= src_y - mask_y;
769 if (!analyze_extent (mask, &extents, &mask_flags))
772 /* If the clip is within the source samples, and the samples are opaque,
773 * then the source is effectively opaque.
775 #define BOTH (FAST_PATH_SAMPLES_OPAQUE | FAST_PATH_SAMPLES_COVER_CLIP)
777 if ((src_flags & BOTH) == BOTH)
778 src_flags |= FAST_PATH_IS_OPAQUE;
780 if ((mask_flags & BOTH) == BOTH)
781 mask_flags |= FAST_PATH_IS_OPAQUE;
784 * Check if we can replace our operator by a simpler one
785 * if the src or dest are opaque. The output operator should be
786 * mathematically equivalent to the source.
788 op = optimize_operator (op, src_flags, mask_flags, dest_flags);
790 if (lookup_composite_function (op,
791 src_format, src_flags,
792 mask_format, mask_flags,
793 dest_format, dest_flags,
796 pixman_composite_info_t info;
797 const pixman_box32_t *pbox;
801 info.src_image = src;
802 info.mask_image = mask;
803 info.dest_image = dest;
805 pbox = pixman_region32_rectangles (®ion, &n);
809 info.src_x = pbox->x1 + src_x - dest_x;
810 info.src_y = pbox->y1 + src_y - dest_y;
811 info.mask_x = pbox->x1 + mask_x - dest_x;
812 info.mask_y = pbox->y1 + mask_y - dest_y;
813 info.dest_x = pbox->x1;
814 info.dest_y = pbox->y1;
815 info.width = pbox->x2 - pbox->x1;
816 info.height = pbox->y2 - pbox->y1;
825 pixman_region32_fini (®ion);
829 pixman_image_composite (pixman_op_t op,
830 pixman_image_t * src,
831 pixman_image_t * mask,
832 pixman_image_t * dest,
842 pixman_image_composite32 (op, src, mask, dest, src_x, src_y,
843 mask_x, mask_y, dest_x, dest_y, width, height);
846 PIXMAN_EXPORT pixman_bool_t
847 pixman_blt (uint32_t *src_bits,
860 return _pixman_implementation_blt (get_implementation(),
861 src_bits, dst_bits, src_stride, dst_stride,
868 PIXMAN_EXPORT pixman_bool_t
869 pixman_fill (uint32_t *bits,
878 return _pixman_implementation_fill (
879 get_implementation(), bits, stride, bpp, x, y, width, height, xor);
883 color_to_uint32 (const pixman_color_t *color)
886 (color->alpha >> 8 << 24) |
887 (color->red >> 8 << 16) |
888 (color->green & 0xff00) |
893 color_to_pixel (pixman_color_t * color,
895 pixman_format_code_t format)
897 uint32_t c = color_to_uint32 (color);
899 if (!(format == PIXMAN_a8r8g8b8 ||
900 format == PIXMAN_x8r8g8b8 ||
901 format == PIXMAN_a8b8g8r8 ||
902 format == PIXMAN_x8b8g8r8 ||
903 format == PIXMAN_b8g8r8a8 ||
904 format == PIXMAN_b8g8r8x8 ||
905 format == PIXMAN_r8g8b8a8 ||
906 format == PIXMAN_r8g8b8x8 ||
907 format == PIXMAN_r5g6b5 ||
908 format == PIXMAN_b5g6r5 ||
909 format == PIXMAN_a8 ||
910 format == PIXMAN_a1))
915 if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_ABGR)
917 c = ((c & 0xff000000) >> 0) |
918 ((c & 0x00ff0000) >> 16) |
919 ((c & 0x0000ff00) >> 0) |
920 ((c & 0x000000ff) << 16);
922 if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_BGRA)
924 c = ((c & 0xff000000) >> 24) |
925 ((c & 0x00ff0000) >> 8) |
926 ((c & 0x0000ff00) << 8) |
927 ((c & 0x000000ff) << 24);
929 if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_RGBA)
930 c = ((c & 0xff000000) >> 24) | (c << 8);
932 if (format == PIXMAN_a1)
934 else if (format == PIXMAN_a8)
936 else if (format == PIXMAN_r5g6b5 ||
937 format == PIXMAN_b5g6r5)
938 c = CONVERT_8888_TO_0565 (c);
941 printf ("color: %x %x %x %x\n", color->alpha, color->red, color->green, color->blue);
942 printf ("pixel: %x\n", c);
949 PIXMAN_EXPORT pixman_bool_t
950 pixman_image_fill_rectangles (pixman_op_t op,
951 pixman_image_t * dest,
952 pixman_color_t * color,
954 const pixman_rectangle16_t *rects)
956 pixman_box32_t stack_boxes[6];
957 pixman_box32_t *boxes;
958 pixman_bool_t result;
963 boxes = pixman_malloc_ab (sizeof (pixman_box32_t), n_rects);
972 for (i = 0; i < n_rects; ++i)
974 boxes[i].x1 = rects[i].x;
975 boxes[i].y1 = rects[i].y;
976 boxes[i].x2 = boxes[i].x1 + rects[i].width;
977 boxes[i].y2 = boxes[i].y1 + rects[i].height;
980 result = pixman_image_fill_boxes (op, dest, color, n_rects, boxes);
982 if (boxes != stack_boxes)
988 PIXMAN_EXPORT pixman_bool_t
989 pixman_image_fill_boxes (pixman_op_t op,
990 pixman_image_t * dest,
991 pixman_color_t * color,
993 const pixman_box32_t *boxes)
995 pixman_image_t *solid;
999 _pixman_image_validate (dest);
1001 if (color->alpha == 0xffff)
1003 if (op == PIXMAN_OP_OVER)
1007 if (op == PIXMAN_OP_CLEAR)
1019 if (op == PIXMAN_OP_SRC)
1023 if (color_to_pixel (color, &pixel, dest->bits.format))
1025 pixman_region32_t fill_region;
1027 pixman_box32_t *rects;
1029 if (!pixman_region32_init_rects (&fill_region, boxes, n_boxes))
1032 if (dest->common.have_clip_region)
1034 if (!pixman_region32_intersect (&fill_region,
1036 &dest->common.clip_region))
1040 rects = pixman_region32_rectangles (&fill_region, &n_rects);
1041 for (j = 0; j < n_rects; ++j)
1043 const pixman_box32_t *rect = &(rects[j]);
1044 pixman_fill (dest->bits.bits, dest->bits.rowstride, PIXMAN_FORMAT_BPP (dest->bits.format),
1045 rect->x1, rect->y1, rect->x2 - rect->x1, rect->y2 - rect->y1,
1049 pixman_region32_fini (&fill_region);
1054 solid = pixman_image_create_solid_fill (color);
1058 for (i = 0; i < n_boxes; ++i)
1060 const pixman_box32_t *box = &(boxes[i]);
1062 pixman_image_composite32 (op, solid, NULL, dest,
1065 box->x2 - box->x1, box->y2 - box->y1);
1068 pixman_image_unref (solid);
1076 * Returns the version of the pixman library encoded in a single
1077 * integer as per %PIXMAN_VERSION_ENCODE. The encoding ensures that
1078 * later versions compare greater than earlier versions.
1080 * A run-time comparison to check that pixman's version is greater than
1081 * or equal to version X.Y.Z could be performed as follows:
1083 * <informalexample><programlisting>
1084 * if (pixman_version() >= PIXMAN_VERSION_ENCODE(X,Y,Z)) {...}
1085 * </programlisting></informalexample>
1087 * See also pixman_version_string() as well as the compile-time
1088 * equivalents %PIXMAN_VERSION and %PIXMAN_VERSION_STRING.
1090 * Return value: the encoded version.
1093 pixman_version (void)
1095 return PIXMAN_VERSION;
1099 * pixman_version_string:
1101 * Returns the version of the pixman library as a human-readable string
1102 * of the form "X.Y.Z".
1104 * See also pixman_version() as well as the compile-time equivalents
1105 * %PIXMAN_VERSION_STRING and %PIXMAN_VERSION.
1107 * Return value: a string containing the version.
1109 PIXMAN_EXPORT const char*
1110 pixman_version_string (void)
1112 return PIXMAN_VERSION_STRING;
1116 * pixman_format_supported_source:
1117 * @format: A pixman_format_code_t format
1119 * Return value: whether the provided format code is a supported
1120 * format for a pixman surface used as a source in
1123 * Currently, all pixman_format_code_t values are supported.
1125 PIXMAN_EXPORT pixman_bool_t
1126 pixman_format_supported_source (pixman_format_code_t format)
1130 /* 32 bpp formats */
1131 case PIXMAN_a2b10g10r10:
1132 case PIXMAN_x2b10g10r10:
1133 case PIXMAN_a2r10g10b10:
1134 case PIXMAN_x2r10g10b10:
1135 case PIXMAN_a8r8g8b8:
1136 case PIXMAN_x8r8g8b8:
1137 case PIXMAN_a8b8g8r8:
1138 case PIXMAN_x8b8g8r8:
1139 case PIXMAN_b8g8r8a8:
1140 case PIXMAN_b8g8r8x8:
1141 case PIXMAN_r8g8b8a8:
1142 case PIXMAN_r8g8b8x8:
1147 case PIXMAN_x14r6g6b6:
1148 /* 16 bpp formats */
1149 case PIXMAN_a1r5g5b5:
1150 case PIXMAN_x1r5g5b5:
1151 case PIXMAN_a1b5g5r5:
1152 case PIXMAN_x1b5g5r5:
1153 case PIXMAN_a4r4g4b4:
1154 case PIXMAN_x4r4g4b4:
1155 case PIXMAN_a4b4g4r4:
1156 case PIXMAN_x4b4g4r4:
1161 case PIXMAN_a2r2g2b2:
1162 case PIXMAN_a2b2g2r2:
1166 /* Collides with PIXMAN_c8
1169 /* Collides with PIXMAN_g8
1176 case PIXMAN_a1r1g1b1:
1177 case PIXMAN_a1b1g1r1:
1194 * pixman_format_supported_destination:
1195 * @format: A pixman_format_code_t format
1197 * Return value: whether the provided format code is a supported
1198 * format for a pixman surface used as a destination in
1201 * Currently, all pixman_format_code_t values are supported
1202 * except for the YUV formats.
1204 PIXMAN_EXPORT pixman_bool_t
1205 pixman_format_supported_destination (pixman_format_code_t format)
1207 /* YUV formats cannot be written to at the moment */
1208 if (format == PIXMAN_yuy2 || format == PIXMAN_yv12)
1211 return pixman_format_supported_source (format);
1214 PIXMAN_EXPORT pixman_bool_t
1215 pixman_compute_composite_region (pixman_region16_t * region,
1216 pixman_image_t * src_image,
1217 pixman_image_t * mask_image,
1218 pixman_image_t * dest_image,
1228 pixman_region32_t r32;
1229 pixman_bool_t retval;
1231 pixman_region32_init (&r32);
1233 retval = pixman_compute_composite_region32 (
1234 &r32, src_image, mask_image, dest_image,
1235 src_x, src_y, mask_x, mask_y, dest_x, dest_y,
1240 if (!pixman_region16_copy_from_region32 (region, &r32))
1244 pixman_region32_fini (&r32);