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;
450 compute_sample_extents (pixman_transform_t *transform,
451 pixman_box32_t *extents, int x, int y,
452 pixman_fixed_t x_off, pixman_fixed_t y_off,
453 pixman_fixed_t width, pixman_fixed_t height)
455 pixman_fixed_t x1, y1, x2, y2;
456 pixman_fixed_48_16_t tx1, ty1, tx2, ty2;
458 /* We have checked earlier that (extents->x1 - x) etc. fit in a pixman_fixed_t */
459 x1 = (pixman_fixed_48_16_t)pixman_int_to_fixed (extents->x1 - x) + pixman_fixed_1 / 2;
460 y1 = (pixman_fixed_48_16_t)pixman_int_to_fixed (extents->y1 - y) + pixman_fixed_1 / 2;
461 x2 = (pixman_fixed_48_16_t)pixman_int_to_fixed (extents->x2 - x) - pixman_fixed_1 / 2;
462 y2 = (pixman_fixed_48_16_t)pixman_int_to_fixed (extents->y2 - y) - pixman_fixed_1 / 2;
466 tx1 = (pixman_fixed_48_16_t)x1;
467 ty1 = (pixman_fixed_48_16_t)y1;
468 tx2 = (pixman_fixed_48_16_t)x2;
469 ty2 = (pixman_fixed_48_16_t)y2;
476 tx1 = ty1 = tx2 = ty2 = 0;
478 for (i = 0; i < 4; ++i)
480 pixman_fixed_48_16_t tx, ty;
483 v.vector[0] = (i & 0x01)? x1 : x2;
484 v.vector[1] = (i & 0x02)? y1 : y2;
485 v.vector[2] = pixman_fixed_1;
487 if (!pixman_transform_point (transform, &v))
490 tx = (pixman_fixed_48_16_t)v.vector[0];
491 ty = (pixman_fixed_48_16_t)v.vector[1];
514 /* Expand the source area by a tiny bit so account of different rounding that
515 * may happen during sampling. Note that (8 * pixman_fixed_e) is very far from
516 * 0.5 so this won't cause the area computed to be overly pessimistic.
518 tx1 += x_off - 8 * pixman_fixed_e;
519 ty1 += y_off - 8 * pixman_fixed_e;
520 tx2 += x_off + width + 8 * pixman_fixed_e;
521 ty2 += y_off + height + 8 * pixman_fixed_e;
523 if (tx1 < pixman_min_fixed_48_16 || tx1 > pixman_max_fixed_48_16 ||
524 ty1 < pixman_min_fixed_48_16 || ty1 > pixman_max_fixed_48_16 ||
525 tx2 < pixman_min_fixed_48_16 || tx2 > pixman_max_fixed_48_16 ||
526 ty2 < pixman_min_fixed_48_16 || ty2 > pixman_max_fixed_48_16)
532 extents->x1 = pixman_fixed_to_int (tx1);
533 extents->y1 = pixman_fixed_to_int (ty1);
534 extents->x2 = pixman_fixed_to_int (tx2) + 1;
535 extents->y2 = pixman_fixed_to_int (ty2) + 1;
541 #define IS_16BIT(x) (((x) >= INT16_MIN) && ((x) <= INT16_MAX))
544 analyze_extent (pixman_image_t *image, int x, int y,
545 const pixman_box32_t *extents, uint32_t *flags)
547 pixman_transform_t *transform;
548 pixman_fixed_t *params;
549 pixman_fixed_t x_off, y_off;
550 pixman_fixed_t width, height;
556 /* Some compositing functions walk one step
557 * outside the destination rectangle, so we
558 * check here that the expanded-by-one source
559 * extents in destination space fits in 16 bits
561 if (!IS_16BIT (extents->x1 - x - 1) ||
562 !IS_16BIT (extents->y1 - y - 1) ||
563 !IS_16BIT (extents->x2 - x + 1) ||
564 !IS_16BIT (extents->y2 - y + 1))
569 transform = image->common.transform;
570 if (image->common.type == BITS)
572 /* During repeat mode calculations we might convert the
573 * width/height of an image to fixed 16.16, so we need
574 * them to be smaller than 16 bits.
576 if (image->bits.width >= 0x7fff || image->bits.height >= 0x7fff)
579 #define ID_AND_NEAREST (FAST_PATH_ID_TRANSFORM | FAST_PATH_NEAREST_FILTER)
581 if ((image->common.flags & ID_AND_NEAREST) == ID_AND_NEAREST &&
582 extents->x1 - x >= 0 &&
583 extents->y1 - y >= 0 &&
584 extents->x2 - x <= image->bits.width &&
585 extents->y2 - y <= image->bits.height)
587 *flags |= FAST_PATH_SAMPLES_COVER_CLIP;
591 switch (image->common.filter)
593 case PIXMAN_FILTER_CONVOLUTION:
594 params = image->common.filter_params;
595 x_off = - pixman_fixed_e - ((params[0] - pixman_fixed_1) >> 1);
596 y_off = - pixman_fixed_e - ((params[1] - pixman_fixed_1) >> 1);
601 case PIXMAN_FILTER_GOOD:
602 case PIXMAN_FILTER_BEST:
603 case PIXMAN_FILTER_BILINEAR:
604 x_off = - pixman_fixed_1 / 2;
605 y_off = - pixman_fixed_1 / 2;
606 width = pixman_fixed_1;
607 height = pixman_fixed_1;
610 case PIXMAN_FILTER_FAST:
611 case PIXMAN_FILTER_NEAREST:
612 x_off = - pixman_fixed_e;
613 y_off = - pixman_fixed_e;
622 /* Check whether the non-expanded, transformed extent is entirely within
623 * the source image, and set the FAST_PATH_SAMPLES_COVER_CLIP if it is.
626 if (compute_sample_extents (transform, &ex, x, y, x_off, y_off, width, height) &&
627 ex.x1 >= 0 && ex.y1 >= 0 &&
628 ex.x2 <= image->bits.width && ex.y2 <= image->bits.height)
630 *flags |= FAST_PATH_SAMPLES_COVER_CLIP;
641 /* Check that the extents expanded by one don't overflow. This ensures that
642 * compositing functions can simply walk the source space using 16.16
643 * variables without worrying about overflow.
645 ex.x1 = extents->x1 - 1;
646 ex.y1 = extents->y1 - 1;
647 ex.x2 = extents->x2 + 1;
648 ex.y2 = extents->y2 + 1;
650 if (!compute_sample_extents (transform, &ex, x, y, x_off, y_off, width, height))
657 * Work around GCC bug causing crashes in Mozilla with SSE2
659 * When using -msse, gcc generates movdqa instructions assuming that
660 * the stack is 16 byte aligned. Unfortunately some applications, such
661 * as Mozilla and Mono, end up aligning the stack to 4 bytes, which
662 * causes the movdqa instructions to fail.
664 * The __force_align_arg_pointer__ makes gcc generate a prologue that
665 * realigns the stack pointer to 16 bytes.
667 * On x86-64 this is not necessary because the standard ABI already
668 * calls for a 16 byte aligned stack.
670 * See https://bugs.freedesktop.org/show_bug.cgi?id=15693
672 #if defined (USE_SSE2) && defined(__GNUC__) && !defined(__x86_64__) && !defined(__amd64__)
673 __attribute__((__force_align_arg_pointer__))
676 pixman_image_composite32 (pixman_op_t op,
677 pixman_image_t * src,
678 pixman_image_t * mask,
679 pixman_image_t * dest,
689 pixman_format_code_t src_format, mask_format, dest_format;
690 uint32_t src_flags, mask_flags, dest_flags;
691 pixman_region32_t region;
692 pixman_box32_t *extents;
693 pixman_implementation_t *imp;
694 pixman_composite_func_t func;
696 _pixman_image_validate (src);
698 _pixman_image_validate (mask);
699 _pixman_image_validate (dest);
701 src_format = src->common.extended_format_code;
702 src_flags = src->common.flags;
706 mask_format = mask->common.extended_format_code;
707 mask_flags = mask->common.flags;
711 mask_format = PIXMAN_null;
712 mask_flags = FAST_PATH_IS_OPAQUE;
715 dest_format = dest->common.extended_format_code;
716 dest_flags = dest->common.flags;
718 /* Check for pixbufs */
719 if ((mask_format == PIXMAN_a8r8g8b8 || mask_format == PIXMAN_a8b8g8r8) &&
720 (src->type == BITS && src->bits.bits == mask->bits.bits) &&
721 (src->common.repeat == mask->common.repeat) &&
722 (src_x == mask_x && src_y == mask_y))
724 if (src_format == PIXMAN_x8b8g8r8)
725 src_format = mask_format = PIXMAN_pixbuf;
726 else if (src_format == PIXMAN_x8r8g8b8)
727 src_format = mask_format = PIXMAN_rpixbuf;
730 pixman_region32_init (®ion);
732 if (!pixman_compute_composite_region32 (
733 ®ion, src, mask, dest,
734 src_x, src_y, mask_x, mask_y, dest_x, dest_y, width, height))
739 extents = pixman_region32_extents (®ion);
741 if (!analyze_extent (src, dest_x - src_x, dest_y - src_y, extents, &src_flags))
744 if (!analyze_extent (mask, dest_x - mask_x, dest_y - mask_y, extents, &mask_flags))
747 /* If the clip is within the source samples, and the samples are opaque,
748 * then the source is effectively opaque.
750 #define BOTH (FAST_PATH_SAMPLES_OPAQUE | FAST_PATH_SAMPLES_COVER_CLIP)
752 if ((src_flags & BOTH) == BOTH)
753 src_flags |= FAST_PATH_IS_OPAQUE;
755 if ((mask_flags & BOTH) == BOTH)
756 mask_flags |= FAST_PATH_IS_OPAQUE;
759 * Check if we can replace our operator by a simpler one
760 * if the src or dest are opaque. The output operator should be
761 * mathematically equivalent to the source.
763 op = optimize_operator (op, src_flags, mask_flags, dest_flags);
765 if (lookup_composite_function (op,
766 src_format, src_flags,
767 mask_format, mask_flags,
768 dest_format, dest_flags,
771 pixman_composite_info_t info;
772 const pixman_box32_t *pbox;
776 info.src_image = src;
777 info.mask_image = mask;
778 info.dest_image = dest;
780 pbox = pixman_region32_rectangles (®ion, &n);
784 info.src_x = pbox->x1 + src_x - dest_x;
785 info.src_y = pbox->y1 + src_y - dest_y;
786 info.mask_x = pbox->x1 + mask_x - dest_x;
787 info.mask_y = pbox->y1 + mask_y - dest_y;
788 info.dest_x = pbox->x1;
789 info.dest_y = pbox->y1;
790 info.width = pbox->x2 - pbox->x1;
791 info.height = pbox->y2 - pbox->y1;
800 pixman_region32_fini (®ion);
804 pixman_image_composite (pixman_op_t op,
805 pixman_image_t * src,
806 pixman_image_t * mask,
807 pixman_image_t * dest,
817 pixman_image_composite32 (op, src, mask, dest, src_x, src_y,
818 mask_x, mask_y, dest_x, dest_y, width, height);
821 PIXMAN_EXPORT pixman_bool_t
822 pixman_blt (uint32_t *src_bits,
835 return _pixman_implementation_blt (get_implementation(),
836 src_bits, dst_bits, src_stride, dst_stride,
843 PIXMAN_EXPORT pixman_bool_t
844 pixman_fill (uint32_t *bits,
853 return _pixman_implementation_fill (
854 get_implementation(), bits, stride, bpp, x, y, width, height, xor);
858 color_to_uint32 (const pixman_color_t *color)
861 (color->alpha >> 8 << 24) |
862 (color->red >> 8 << 16) |
863 (color->green & 0xff00) |
868 color_to_pixel (pixman_color_t * color,
870 pixman_format_code_t format)
872 uint32_t c = color_to_uint32 (color);
874 if (!(format == PIXMAN_a8r8g8b8 ||
875 format == PIXMAN_x8r8g8b8 ||
876 format == PIXMAN_a8b8g8r8 ||
877 format == PIXMAN_x8b8g8r8 ||
878 format == PIXMAN_b8g8r8a8 ||
879 format == PIXMAN_b8g8r8x8 ||
880 format == PIXMAN_r8g8b8a8 ||
881 format == PIXMAN_r8g8b8x8 ||
882 format == PIXMAN_r5g6b5 ||
883 format == PIXMAN_b5g6r5 ||
884 format == PIXMAN_a8 ||
885 format == PIXMAN_a1))
890 if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_ABGR)
892 c = ((c & 0xff000000) >> 0) |
893 ((c & 0x00ff0000) >> 16) |
894 ((c & 0x0000ff00) >> 0) |
895 ((c & 0x000000ff) << 16);
897 if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_BGRA)
899 c = ((c & 0xff000000) >> 24) |
900 ((c & 0x00ff0000) >> 8) |
901 ((c & 0x0000ff00) << 8) |
902 ((c & 0x000000ff) << 24);
904 if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_RGBA)
905 c = ((c & 0xff000000) >> 24) | (c << 8);
907 if (format == PIXMAN_a1)
909 else if (format == PIXMAN_a8)
911 else if (format == PIXMAN_r5g6b5 ||
912 format == PIXMAN_b5g6r5)
913 c = CONVERT_8888_TO_0565 (c);
916 printf ("color: %x %x %x %x\n", color->alpha, color->red, color->green, color->blue);
917 printf ("pixel: %x\n", c);
924 PIXMAN_EXPORT pixman_bool_t
925 pixman_image_fill_rectangles (pixman_op_t op,
926 pixman_image_t * dest,
927 pixman_color_t * color,
929 const pixman_rectangle16_t *rects)
931 pixman_box32_t stack_boxes[6];
932 pixman_box32_t *boxes;
933 pixman_bool_t result;
938 boxes = pixman_malloc_ab (sizeof (pixman_box32_t), n_rects);
947 for (i = 0; i < n_rects; ++i)
949 boxes[i].x1 = rects[i].x;
950 boxes[i].y1 = rects[i].y;
951 boxes[i].x2 = boxes[i].x1 + rects[i].width;
952 boxes[i].y2 = boxes[i].y1 + rects[i].height;
955 result = pixman_image_fill_boxes (op, dest, color, n_rects, boxes);
957 if (boxes != stack_boxes)
963 PIXMAN_EXPORT pixman_bool_t
964 pixman_image_fill_boxes (pixman_op_t op,
965 pixman_image_t * dest,
966 pixman_color_t * color,
968 const pixman_box32_t *boxes)
970 pixman_image_t *solid;
974 _pixman_image_validate (dest);
976 if (color->alpha == 0xffff)
978 if (op == PIXMAN_OP_OVER)
982 if (op == PIXMAN_OP_CLEAR)
994 if (op == PIXMAN_OP_SRC)
998 if (color_to_pixel (color, &pixel, dest->bits.format))
1000 pixman_region32_t fill_region;
1002 pixman_box32_t *rects;
1004 if (!pixman_region32_init_rects (&fill_region, boxes, n_boxes))
1007 if (dest->common.have_clip_region)
1009 if (!pixman_region32_intersect (&fill_region,
1011 &dest->common.clip_region))
1015 rects = pixman_region32_rectangles (&fill_region, &n_rects);
1016 for (j = 0; j < n_rects; ++j)
1018 const pixman_box32_t *rect = &(rects[j]);
1019 pixman_fill (dest->bits.bits, dest->bits.rowstride, PIXMAN_FORMAT_BPP (dest->bits.format),
1020 rect->x1, rect->y1, rect->x2 - rect->x1, rect->y2 - rect->y1,
1024 pixman_region32_fini (&fill_region);
1029 solid = pixman_image_create_solid_fill (color);
1033 for (i = 0; i < n_boxes; ++i)
1035 const pixman_box32_t *box = &(boxes[i]);
1037 pixman_image_composite32 (op, solid, NULL, dest,
1040 box->x2 - box->x1, box->y2 - box->y1);
1043 pixman_image_unref (solid);
1051 * Returns the version of the pixman library encoded in a single
1052 * integer as per %PIXMAN_VERSION_ENCODE. The encoding ensures that
1053 * later versions compare greater than earlier versions.
1055 * A run-time comparison to check that pixman's version is greater than
1056 * or equal to version X.Y.Z could be performed as follows:
1058 * <informalexample><programlisting>
1059 * if (pixman_version() >= PIXMAN_VERSION_ENCODE(X,Y,Z)) {...}
1060 * </programlisting></informalexample>
1062 * See also pixman_version_string() as well as the compile-time
1063 * equivalents %PIXMAN_VERSION and %PIXMAN_VERSION_STRING.
1065 * Return value: the encoded version.
1068 pixman_version (void)
1070 return PIXMAN_VERSION;
1074 * pixman_version_string:
1076 * Returns the version of the pixman library as a human-readable string
1077 * of the form "X.Y.Z".
1079 * See also pixman_version() as well as the compile-time equivalents
1080 * %PIXMAN_VERSION_STRING and %PIXMAN_VERSION.
1082 * Return value: a string containing the version.
1084 PIXMAN_EXPORT const char*
1085 pixman_version_string (void)
1087 return PIXMAN_VERSION_STRING;
1091 * pixman_format_supported_source:
1092 * @format: A pixman_format_code_t format
1094 * Return value: whether the provided format code is a supported
1095 * format for a pixman surface used as a source in
1098 * Currently, all pixman_format_code_t values are supported.
1100 PIXMAN_EXPORT pixman_bool_t
1101 pixman_format_supported_source (pixman_format_code_t format)
1105 /* 32 bpp formats */
1106 case PIXMAN_a2b10g10r10:
1107 case PIXMAN_x2b10g10r10:
1108 case PIXMAN_a2r10g10b10:
1109 case PIXMAN_x2r10g10b10:
1110 case PIXMAN_a8r8g8b8:
1111 case PIXMAN_x8r8g8b8:
1112 case PIXMAN_a8b8g8r8:
1113 case PIXMAN_x8b8g8r8:
1114 case PIXMAN_b8g8r8a8:
1115 case PIXMAN_b8g8r8x8:
1116 case PIXMAN_r8g8b8a8:
1117 case PIXMAN_r8g8b8x8:
1122 case PIXMAN_x14r6g6b6:
1123 /* 16 bpp formats */
1124 case PIXMAN_a1r5g5b5:
1125 case PIXMAN_x1r5g5b5:
1126 case PIXMAN_a1b5g5r5:
1127 case PIXMAN_x1b5g5r5:
1128 case PIXMAN_a4r4g4b4:
1129 case PIXMAN_x4r4g4b4:
1130 case PIXMAN_a4b4g4r4:
1131 case PIXMAN_x4b4g4r4:
1136 case PIXMAN_a2r2g2b2:
1137 case PIXMAN_a2b2g2r2:
1141 /* Collides with PIXMAN_c8
1144 /* Collides with PIXMAN_g8
1151 case PIXMAN_a1r1g1b1:
1152 case PIXMAN_a1b1g1r1:
1169 * pixman_format_supported_destination:
1170 * @format: A pixman_format_code_t format
1172 * Return value: whether the provided format code is a supported
1173 * format for a pixman surface used as a destination in
1176 * Currently, all pixman_format_code_t values are supported
1177 * except for the YUV formats.
1179 PIXMAN_EXPORT pixman_bool_t
1180 pixman_format_supported_destination (pixman_format_code_t format)
1182 /* YUV formats cannot be written to at the moment */
1183 if (format == PIXMAN_yuy2 || format == PIXMAN_yv12)
1186 return pixman_format_supported_source (format);
1189 PIXMAN_EXPORT pixman_bool_t
1190 pixman_compute_composite_region (pixman_region16_t * region,
1191 pixman_image_t * src_image,
1192 pixman_image_t * mask_image,
1193 pixman_image_t * dest_image,
1203 pixman_region32_t r32;
1204 pixman_bool_t retval;
1206 pixman_region32_init (&r32);
1208 retval = pixman_compute_composite_region32 (
1209 &r32, src_image, mask_image, dest_image,
1210 src_x, src_y, mask_x, mask_y, dest_x, dest_y,
1215 if (!pixman_region16_copy_from_region32 (region, &r32))
1219 pixman_region32_fini (&r32);