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;
517 #define IS_16BIT(x) (((x) >= INT16_MIN) && ((x) <= INT16_MAX))
518 #define ABS(f) (((f) < 0)? (-(f)) : (f))
519 #define IS_16_16(f) (((f) >= pixman_min_fixed_48_16 && ((f) <= pixman_max_fixed_48_16)))
522 analyze_extent (pixman_image_t *image,
523 const pixman_box32_t *extents,
526 pixman_transform_t *transform;
527 pixman_fixed_t x_off, y_off;
528 pixman_fixed_t width, height;
529 pixman_fixed_t *params;
530 box_48_16_t transformed;
531 pixman_box32_t exp_extents;
536 /* Some compositing functions walk one step
537 * outside the destination rectangle, so we
538 * check here that the expanded-by-one source
539 * extents in destination space fits in 16 bits
541 if (!IS_16BIT (extents->x1 - 1) ||
542 !IS_16BIT (extents->y1 - 1) ||
543 !IS_16BIT (extents->x2 + 1) ||
544 !IS_16BIT (extents->y2 + 1))
549 transform = image->common.transform;
550 if (image->common.type == BITS)
552 /* During repeat mode calculations we might convert the
553 * width/height of an image to fixed 16.16, so we need
554 * them to be smaller than 16 bits.
556 if (image->bits.width >= 0x7fff || image->bits.height >= 0x7fff)
559 if ((image->common.flags & FAST_PATH_ID_TRANSFORM) == FAST_PATH_ID_TRANSFORM &&
562 extents->x2 <= image->bits.width &&
563 extents->y2 <= image->bits.height)
565 *flags |= FAST_PATH_SAMPLES_COVER_CLIP_NEAREST;
569 switch (image->common.filter)
571 case PIXMAN_FILTER_CONVOLUTION:
572 params = image->common.filter_params;
573 x_off = - pixman_fixed_e - ((params[0] - pixman_fixed_1) >> 1);
574 y_off = - pixman_fixed_e - ((params[1] - pixman_fixed_1) >> 1);
579 case PIXMAN_FILTER_GOOD:
580 case PIXMAN_FILTER_BEST:
581 case PIXMAN_FILTER_BILINEAR:
582 x_off = - pixman_fixed_1 / 2;
583 y_off = - pixman_fixed_1 / 2;
584 width = pixman_fixed_1;
585 height = pixman_fixed_1;
588 case PIXMAN_FILTER_FAST:
589 case PIXMAN_FILTER_NEAREST:
590 x_off = - pixman_fixed_e;
591 y_off = - pixman_fixed_e;
608 if (!compute_transformed_extents (transform, extents, &transformed))
611 /* Expand the source area by a tiny bit so account of different rounding that
612 * may happen during sampling. Note that (8 * pixman_fixed_e) is very far from
613 * 0.5 so this won't cause the area computed to be overly pessimistic.
615 transformed.x1 -= 8 * pixman_fixed_e;
616 transformed.y1 -= 8 * pixman_fixed_e;
617 transformed.x2 += 8 * pixman_fixed_e;
618 transformed.y2 += 8 * pixman_fixed_e;
620 if (image->common.type == BITS)
622 if (pixman_fixed_to_int (transformed.x1) >= 0 &&
623 pixman_fixed_to_int (transformed.y1) >= 0 &&
624 pixman_fixed_to_int (transformed.x2) < image->bits.width &&
625 pixman_fixed_to_int (transformed.y2) < image->bits.height)
627 *flags |= FAST_PATH_SAMPLES_COVER_CLIP_NEAREST;
630 if (pixman_fixed_to_int (transformed.x1 - pixman_fixed_1 / 2) >= 0 &&
631 pixman_fixed_to_int (transformed.y1 - pixman_fixed_1 / 2) >= 0 &&
632 pixman_fixed_to_int (transformed.x2 + pixman_fixed_1 / 2) < image->bits.width &&
633 pixman_fixed_to_int (transformed.y2 + pixman_fixed_1 / 2) < image->bits.height)
635 *flags |= FAST_PATH_SAMPLES_COVER_CLIP_BILINEAR;
639 /* Check we don't overflow when the destination extents are expanded by one.
640 * This ensures that compositing functions can simply walk the source space
641 * using 16.16 variables without worrying about overflow.
643 exp_extents = *extents;
649 if (!compute_transformed_extents (transform, &exp_extents, &transformed))
652 if (!IS_16_16 (transformed.x1 + x_off - 8 * pixman_fixed_e) ||
653 !IS_16_16 (transformed.y1 + y_off - 8 * pixman_fixed_e) ||
654 !IS_16_16 (transformed.x2 + x_off + 8 * pixman_fixed_e + width) ||
655 !IS_16_16 (transformed.y2 + y_off + 8 * pixman_fixed_e + height))
664 * Work around GCC bug causing crashes in Mozilla with SSE2
666 * When using -msse, gcc generates movdqa instructions assuming that
667 * the stack is 16 byte aligned. Unfortunately some applications, such
668 * as Mozilla and Mono, end up aligning the stack to 4 bytes, which
669 * causes the movdqa instructions to fail.
671 * The __force_align_arg_pointer__ makes gcc generate a prologue that
672 * realigns the stack pointer to 16 bytes.
674 * On x86-64 this is not necessary because the standard ABI already
675 * calls for a 16 byte aligned stack.
677 * See https://bugs.freedesktop.org/show_bug.cgi?id=15693
679 #if defined (USE_SSE2) && defined(__GNUC__) && !defined(__x86_64__) && !defined(__amd64__)
680 __attribute__((__force_align_arg_pointer__))
683 pixman_image_composite32 (pixman_op_t op,
684 pixman_image_t * src,
685 pixman_image_t * mask,
686 pixman_image_t * dest,
696 pixman_format_code_t src_format, mask_format, dest_format;
697 uint32_t src_flags, mask_flags, dest_flags;
698 pixman_region32_t region;
699 pixman_box32_t extents;
700 pixman_implementation_t *imp;
701 pixman_composite_func_t func;
703 _pixman_image_validate (src);
705 _pixman_image_validate (mask);
706 _pixman_image_validate (dest);
708 src_format = src->common.extended_format_code;
709 src_flags = src->common.flags;
713 mask_format = mask->common.extended_format_code;
714 mask_flags = mask->common.flags;
718 mask_format = PIXMAN_null;
719 mask_flags = FAST_PATH_IS_OPAQUE;
722 dest_format = dest->common.extended_format_code;
723 dest_flags = dest->common.flags;
725 /* Check for pixbufs */
726 if ((mask_format == PIXMAN_a8r8g8b8 || mask_format == PIXMAN_a8b8g8r8) &&
727 (src->type == BITS && src->bits.bits == mask->bits.bits) &&
728 (src->common.repeat == mask->common.repeat) &&
729 (src_x == mask_x && src_y == mask_y))
731 if (src_format == PIXMAN_x8b8g8r8)
732 src_format = mask_format = PIXMAN_pixbuf;
733 else if (src_format == PIXMAN_x8r8g8b8)
734 src_format = mask_format = PIXMAN_rpixbuf;
737 pixman_region32_init (®ion);
739 if (!pixman_compute_composite_region32 (
740 ®ion, src, mask, dest,
741 src_x, src_y, mask_x, mask_y, dest_x, dest_y, width, height))
746 extents = *pixman_region32_extents (®ion);
748 extents.x1 -= dest_x - src_x;
749 extents.y1 -= dest_y - src_y;
750 extents.x2 -= dest_x - src_x;
751 extents.y2 -= dest_y - src_y;
753 if (!analyze_extent (src, &extents, &src_flags))
756 extents.x1 -= src_x - mask_x;
757 extents.y1 -= src_y - mask_y;
758 extents.x2 -= src_x - mask_x;
759 extents.y2 -= src_y - mask_y;
761 if (!analyze_extent (mask, &extents, &mask_flags))
764 /* If the clip is within the source samples, and the samples are
765 * opaque, then the source is effectively opaque.
767 #define NEAREST_OPAQUE (FAST_PATH_SAMPLES_OPAQUE | \
768 FAST_PATH_NEAREST_FILTER | \
769 FAST_PATH_SAMPLES_COVER_CLIP_NEAREST)
770 #define BILINEAR_OPAQUE (FAST_PATH_SAMPLES_OPAQUE | \
771 FAST_PATH_BILINEAR_FILTER | \
772 FAST_PATH_SAMPLES_COVER_CLIP_BILINEAR)
774 if ((src_flags & NEAREST_OPAQUE) == NEAREST_OPAQUE ||
775 (src_flags & BILINEAR_OPAQUE) == BILINEAR_OPAQUE)
777 src_flags |= FAST_PATH_IS_OPAQUE;
780 if ((mask_flags & NEAREST_OPAQUE) == NEAREST_OPAQUE ||
781 (mask_flags & BILINEAR_OPAQUE) == BILINEAR_OPAQUE)
783 mask_flags |= FAST_PATH_IS_OPAQUE;
787 * Check if we can replace our operator by a simpler one
788 * if the src or dest are opaque. The output operator should be
789 * mathematically equivalent to the source.
791 op = optimize_operator (op, src_flags, mask_flags, dest_flags);
793 if (lookup_composite_function (op,
794 src_format, src_flags,
795 mask_format, mask_flags,
796 dest_format, dest_flags,
799 pixman_composite_info_t info;
800 const pixman_box32_t *pbox;
804 info.src_image = src;
805 info.mask_image = mask;
806 info.dest_image = dest;
808 pbox = pixman_region32_rectangles (®ion, &n);
812 info.src_x = pbox->x1 + src_x - dest_x;
813 info.src_y = pbox->y1 + src_y - dest_y;
814 info.mask_x = pbox->x1 + mask_x - dest_x;
815 info.mask_y = pbox->y1 + mask_y - dest_y;
816 info.dest_x = pbox->x1;
817 info.dest_y = pbox->y1;
818 info.width = pbox->x2 - pbox->x1;
819 info.height = pbox->y2 - pbox->y1;
828 pixman_region32_fini (®ion);
832 pixman_image_composite (pixman_op_t op,
833 pixman_image_t * src,
834 pixman_image_t * mask,
835 pixman_image_t * dest,
845 pixman_image_composite32 (op, src, mask, dest, src_x, src_y,
846 mask_x, mask_y, dest_x, dest_y, width, height);
849 PIXMAN_EXPORT pixman_bool_t
850 pixman_blt (uint32_t *src_bits,
863 return _pixman_implementation_blt (get_implementation(),
864 src_bits, dst_bits, src_stride, dst_stride,
871 PIXMAN_EXPORT pixman_bool_t
872 pixman_fill (uint32_t *bits,
881 return _pixman_implementation_fill (
882 get_implementation(), bits, stride, bpp, x, y, width, height, xor);
886 color_to_uint32 (const pixman_color_t *color)
889 (color->alpha >> 8 << 24) |
890 (color->red >> 8 << 16) |
891 (color->green & 0xff00) |
896 color_to_pixel (pixman_color_t * color,
898 pixman_format_code_t format)
900 uint32_t c = color_to_uint32 (color);
902 if (!(format == PIXMAN_a8r8g8b8 ||
903 format == PIXMAN_x8r8g8b8 ||
904 format == PIXMAN_a8b8g8r8 ||
905 format == PIXMAN_x8b8g8r8 ||
906 format == PIXMAN_b8g8r8a8 ||
907 format == PIXMAN_b8g8r8x8 ||
908 format == PIXMAN_r8g8b8a8 ||
909 format == PIXMAN_r8g8b8x8 ||
910 format == PIXMAN_r5g6b5 ||
911 format == PIXMAN_b5g6r5 ||
912 format == PIXMAN_a8 ||
913 format == PIXMAN_a1))
918 if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_ABGR)
920 c = ((c & 0xff000000) >> 0) |
921 ((c & 0x00ff0000) >> 16) |
922 ((c & 0x0000ff00) >> 0) |
923 ((c & 0x000000ff) << 16);
925 if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_BGRA)
927 c = ((c & 0xff000000) >> 24) |
928 ((c & 0x00ff0000) >> 8) |
929 ((c & 0x0000ff00) << 8) |
930 ((c & 0x000000ff) << 24);
932 if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_RGBA)
933 c = ((c & 0xff000000) >> 24) | (c << 8);
935 if (format == PIXMAN_a1)
937 else if (format == PIXMAN_a8)
939 else if (format == PIXMAN_r5g6b5 ||
940 format == PIXMAN_b5g6r5)
941 c = CONVERT_8888_TO_0565 (c);
944 printf ("color: %x %x %x %x\n", color->alpha, color->red, color->green, color->blue);
945 printf ("pixel: %x\n", c);
952 PIXMAN_EXPORT pixman_bool_t
953 pixman_image_fill_rectangles (pixman_op_t op,
954 pixman_image_t * dest,
955 pixman_color_t * color,
957 const pixman_rectangle16_t *rects)
959 pixman_box32_t stack_boxes[6];
960 pixman_box32_t *boxes;
961 pixman_bool_t result;
966 boxes = pixman_malloc_ab (sizeof (pixman_box32_t), n_rects);
975 for (i = 0; i < n_rects; ++i)
977 boxes[i].x1 = rects[i].x;
978 boxes[i].y1 = rects[i].y;
979 boxes[i].x2 = boxes[i].x1 + rects[i].width;
980 boxes[i].y2 = boxes[i].y1 + rects[i].height;
983 result = pixman_image_fill_boxes (op, dest, color, n_rects, boxes);
985 if (boxes != stack_boxes)
991 PIXMAN_EXPORT pixman_bool_t
992 pixman_image_fill_boxes (pixman_op_t op,
993 pixman_image_t * dest,
994 pixman_color_t * color,
996 const pixman_box32_t *boxes)
998 pixman_image_t *solid;
1002 _pixman_image_validate (dest);
1004 if (color->alpha == 0xffff)
1006 if (op == PIXMAN_OP_OVER)
1010 if (op == PIXMAN_OP_CLEAR)
1022 if (op == PIXMAN_OP_SRC)
1026 if (color_to_pixel (color, &pixel, dest->bits.format))
1028 pixman_region32_t fill_region;
1030 pixman_box32_t *rects;
1032 if (!pixman_region32_init_rects (&fill_region, boxes, n_boxes))
1035 if (dest->common.have_clip_region)
1037 if (!pixman_region32_intersect (&fill_region,
1039 &dest->common.clip_region))
1043 rects = pixman_region32_rectangles (&fill_region, &n_rects);
1044 for (j = 0; j < n_rects; ++j)
1046 const pixman_box32_t *rect = &(rects[j]);
1047 pixman_fill (dest->bits.bits, dest->bits.rowstride, PIXMAN_FORMAT_BPP (dest->bits.format),
1048 rect->x1, rect->y1, rect->x2 - rect->x1, rect->y2 - rect->y1,
1052 pixman_region32_fini (&fill_region);
1057 solid = pixman_image_create_solid_fill (color);
1061 for (i = 0; i < n_boxes; ++i)
1063 const pixman_box32_t *box = &(boxes[i]);
1065 pixman_image_composite32 (op, solid, NULL, dest,
1068 box->x2 - box->x1, box->y2 - box->y1);
1071 pixman_image_unref (solid);
1079 * Returns the version of the pixman library encoded in a single
1080 * integer as per %PIXMAN_VERSION_ENCODE. The encoding ensures that
1081 * later versions compare greater than earlier versions.
1083 * A run-time comparison to check that pixman's version is greater than
1084 * or equal to version X.Y.Z could be performed as follows:
1086 * <informalexample><programlisting>
1087 * if (pixman_version() >= PIXMAN_VERSION_ENCODE(X,Y,Z)) {...}
1088 * </programlisting></informalexample>
1090 * See also pixman_version_string() as well as the compile-time
1091 * equivalents %PIXMAN_VERSION and %PIXMAN_VERSION_STRING.
1093 * Return value: the encoded version.
1096 pixman_version (void)
1098 return PIXMAN_VERSION;
1102 * pixman_version_string:
1104 * Returns the version of the pixman library as a human-readable string
1105 * of the form "X.Y.Z".
1107 * See also pixman_version() as well as the compile-time equivalents
1108 * %PIXMAN_VERSION_STRING and %PIXMAN_VERSION.
1110 * Return value: a string containing the version.
1112 PIXMAN_EXPORT const char*
1113 pixman_version_string (void)
1115 return PIXMAN_VERSION_STRING;
1119 * pixman_format_supported_source:
1120 * @format: A pixman_format_code_t format
1122 * Return value: whether the provided format code is a supported
1123 * format for a pixman surface used as a source in
1126 * Currently, all pixman_format_code_t values are supported.
1128 PIXMAN_EXPORT pixman_bool_t
1129 pixman_format_supported_source (pixman_format_code_t format)
1133 /* 32 bpp formats */
1134 case PIXMAN_a2b10g10r10:
1135 case PIXMAN_x2b10g10r10:
1136 case PIXMAN_a2r10g10b10:
1137 case PIXMAN_x2r10g10b10:
1138 case PIXMAN_a8r8g8b8:
1139 case PIXMAN_x8r8g8b8:
1140 case PIXMAN_a8b8g8r8:
1141 case PIXMAN_x8b8g8r8:
1142 case PIXMAN_b8g8r8a8:
1143 case PIXMAN_b8g8r8x8:
1144 case PIXMAN_r8g8b8a8:
1145 case PIXMAN_r8g8b8x8:
1150 case PIXMAN_x14r6g6b6:
1151 /* 16 bpp formats */
1152 case PIXMAN_a1r5g5b5:
1153 case PIXMAN_x1r5g5b5:
1154 case PIXMAN_a1b5g5r5:
1155 case PIXMAN_x1b5g5r5:
1156 case PIXMAN_a4r4g4b4:
1157 case PIXMAN_x4r4g4b4:
1158 case PIXMAN_a4b4g4r4:
1159 case PIXMAN_x4b4g4r4:
1164 case PIXMAN_a2r2g2b2:
1165 case PIXMAN_a2b2g2r2:
1169 /* Collides with PIXMAN_c8
1172 /* Collides with PIXMAN_g8
1179 case PIXMAN_a1r1g1b1:
1180 case PIXMAN_a1b1g1r1:
1197 * pixman_format_supported_destination:
1198 * @format: A pixman_format_code_t format
1200 * Return value: whether the provided format code is a supported
1201 * format for a pixman surface used as a destination in
1204 * Currently, all pixman_format_code_t values are supported
1205 * except for the YUV formats.
1207 PIXMAN_EXPORT pixman_bool_t
1208 pixman_format_supported_destination (pixman_format_code_t format)
1210 /* YUV formats cannot be written to at the moment */
1211 if (format == PIXMAN_yuy2 || format == PIXMAN_yv12)
1214 return pixman_format_supported_source (format);
1217 PIXMAN_EXPORT pixman_bool_t
1218 pixman_compute_composite_region (pixman_region16_t * region,
1219 pixman_image_t * src_image,
1220 pixman_image_t * mask_image,
1221 pixman_image_t * dest_image,
1231 pixman_region32_t r32;
1232 pixman_bool_t retval;
1234 pixman_region32_init (&r32);
1236 retval = pixman_compute_composite_region32 (
1237 &r32, src_image, mask_image, dest_image,
1238 src_x, src_y, mask_x, mask_y, dest_x, dest_y,
1243 if (!pixman_region16_copy_from_region32 (region, &r32))
1247 pixman_region32_fini (&r32);