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"
34 * Operator optimizations based on source or destination opacity
39 pixman_op_t op_src_dst_opaque;
40 pixman_op_t op_src_opaque;
41 pixman_op_t op_dst_opaque;
42 } optimized_operator_info_t;
44 static const optimized_operator_info_t optimized_operators[] =
46 /* Input Operator SRC&DST Opaque SRC Opaque DST Opaque */
47 { PIXMAN_OP_OVER, PIXMAN_OP_SRC, PIXMAN_OP_SRC, PIXMAN_OP_OVER },
48 { PIXMAN_OP_OVER_REVERSE, PIXMAN_OP_DST, PIXMAN_OP_OVER_REVERSE, PIXMAN_OP_DST },
49 { PIXMAN_OP_IN, PIXMAN_OP_SRC, PIXMAN_OP_IN, PIXMAN_OP_SRC },
50 { PIXMAN_OP_IN_REVERSE, PIXMAN_OP_DST, PIXMAN_OP_DST, PIXMAN_OP_IN_REVERSE },
51 { PIXMAN_OP_OUT, PIXMAN_OP_CLEAR, PIXMAN_OP_OUT, PIXMAN_OP_CLEAR },
52 { PIXMAN_OP_OUT_REVERSE, PIXMAN_OP_CLEAR, PIXMAN_OP_CLEAR, PIXMAN_OP_OUT_REVERSE },
53 { PIXMAN_OP_ATOP, PIXMAN_OP_SRC, PIXMAN_OP_IN, PIXMAN_OP_OVER },
54 { PIXMAN_OP_ATOP_REVERSE, PIXMAN_OP_DST, PIXMAN_OP_OVER_REVERSE, PIXMAN_OP_IN_REVERSE },
55 { PIXMAN_OP_XOR, PIXMAN_OP_CLEAR, PIXMAN_OP_OUT, PIXMAN_OP_OUT_REVERSE },
56 { PIXMAN_OP_SATURATE, PIXMAN_OP_DST, PIXMAN_OP_OVER_REVERSE, PIXMAN_OP_DST },
60 static pixman_implementation_t *imp;
63 * Check if the current operator could be optimized
65 static const optimized_operator_info_t*
66 pixman_operator_can_be_optimized (pixman_op_t op)
68 const optimized_operator_info_t *info;
70 for (info = optimized_operators; info->op != PIXMAN_OP_NONE; info++)
79 * Optimize the current operator based on opacity of source or destination
80 * The output operator should be mathematically equivalent to the source.
83 pixman_optimize_operator (pixman_op_t op,
84 pixman_image_t *src_image,
85 pixman_image_t *mask_image,
86 pixman_image_t *dst_image)
88 pixman_bool_t is_source_opaque;
89 pixman_bool_t is_dest_opaque;
90 const optimized_operator_info_t *info = pixman_operator_can_be_optimized (op);
92 if (!info || mask_image)
95 is_source_opaque = _pixman_image_is_opaque (src_image);
96 is_dest_opaque = _pixman_image_is_opaque (dst_image);
98 if (is_source_opaque == FALSE && is_dest_opaque == FALSE)
101 if (is_source_opaque && is_dest_opaque)
102 return info->op_src_dst_opaque;
103 else if (is_source_opaque)
104 return info->op_src_opaque;
105 else if (is_dest_opaque)
106 return info->op_dst_opaque;
113 apply_workaround (pixman_image_t *image,
116 uint32_t ** save_bits,
120 if (image && image->common.need_workaround)
122 /* Some X servers generate images that point to the
123 * wrong place in memory, but then set the clip region
124 * to point to the right place. Because of an old bug
125 * in pixman, this would actually work.
127 * Here we try and undo the damage
129 int bpp = PIXMAN_FORMAT_BPP (image->bits.format) / 8;
130 pixman_box32_t *extents;
134 extents = pixman_region32_extents (&(image->common.clip_region));
138 *save_bits = image->bits.bits;
142 pixman_region32_translate (&(image->common.clip_region), -dx, -dy);
144 t = (uint8_t *)image->bits.bits;
145 t += dy * image->bits.rowstride * 4 + dx * bpp;
146 image->bits.bits = (uint32_t *)t;
154 unapply_workaround (pixman_image_t *image, uint32_t *bits, int dx, int dy)
156 if (image && image->common.need_workaround)
158 image->bits.bits = bits;
159 pixman_region32_translate (&image->common.clip_region, dx, dy);
164 do_composite (pixman_implementation_t *imp,
167 pixman_image_t *mask,
168 pixman_image_t *dest,
180 if (_pixman_run_fast_path (imp->fast_paths, imp,
195 * Work around GCC bug causing crashes in Mozilla with SSE2
197 * When using -msse, gcc generates movdqa instructions assuming that
198 * the stack is 16 byte aligned. Unfortunately some applications, such
199 * as Mozilla and Mono, end up aligning the stack to 4 bytes, which
200 * causes the movdqa instructions to fail.
202 * The __force_align_arg_pointer__ makes gcc generate a prologue that
203 * realigns the stack pointer to 16 bytes.
205 * On x86-64 this is not necessary because the standard ABI already
206 * calls for a 16 byte aligned stack.
208 * See https://bugs.freedesktop.org/show_bug.cgi?id=15693
210 #if defined (USE_SSE2) && defined(__GNUC__) && !defined(__x86_64__) && !defined(__amd64__)
211 __attribute__((__force_align_arg_pointer__))
214 pixman_image_composite (pixman_op_t op,
215 pixman_image_t * src,
216 pixman_image_t * mask,
217 pixman_image_t * dest,
227 pixman_image_composite32 (op, src, mask, dest, src_x, src_y,
228 mask_x, mask_y, dest_x, dest_y, width, height);
232 pixman_image_composite32 (pixman_op_t op,
233 pixman_image_t * src,
234 pixman_image_t * mask,
235 pixman_image_t * dest,
248 int mask_dx, mask_dy;
250 int dest_dx, dest_dy;
251 pixman_bool_t need_workaround;
253 _pixman_image_validate (src);
255 _pixman_image_validate (mask);
256 _pixman_image_validate (dest);
259 * Check if we can replace our operator by a simpler one
260 * if the src or dest are opaque. The output operator should be
261 * mathematically equivalent to the source.
263 op = pixman_optimize_operator(op, src, mask, dest);
264 if (op == PIXMAN_OP_DST ||
265 op == PIXMAN_OP_CONJOINT_DST ||
266 op == PIXMAN_OP_DISJOINT_DST)
272 imp = _pixman_choose_implementation ();
275 (src->common.need_workaround) ||
276 (mask && mask->common.need_workaround) ||
277 (dest->common.need_workaround);
281 apply_workaround (src, &src_x, &src_y, &src_bits, &src_dx, &src_dy);
282 apply_workaround (mask, &mask_x, &mask_y, &mask_bits, &mask_dx, &mask_dy);
283 apply_workaround (dest, &dest_x, &dest_y, &dest_bits, &dest_dx, &dest_dy);
286 do_composite (imp, op,
295 if (src->common.need_workaround)
296 unapply_workaround (src, src_bits, src_dx, src_dy);
297 if (mask && mask->common.need_workaround)
298 unapply_workaround (mask, mask_bits, mask_dx, mask_dy);
299 if (dest->common.need_workaround)
300 unapply_workaround (dest, dest_bits, dest_dx, dest_dy);
304 PIXMAN_EXPORT pixman_bool_t
305 pixman_blt (uint32_t *src_bits,
319 imp = _pixman_choose_implementation ();
321 return _pixman_implementation_blt (imp, src_bits, dst_bits, src_stride, dst_stride,
328 PIXMAN_EXPORT pixman_bool_t
329 pixman_fill (uint32_t *bits,
339 imp = _pixman_choose_implementation ();
341 return _pixman_implementation_fill (imp, bits, stride, bpp, x, y, width, height, xor);
345 color_to_uint32 (const pixman_color_t *color)
348 (color->alpha >> 8 << 24) |
349 (color->red >> 8 << 16) |
350 (color->green & 0xff00) |
355 color_to_pixel (pixman_color_t * color,
357 pixman_format_code_t format)
359 uint32_t c = color_to_uint32 (color);
361 if (!(format == PIXMAN_a8r8g8b8 ||
362 format == PIXMAN_x8r8g8b8 ||
363 format == PIXMAN_a8b8g8r8 ||
364 format == PIXMAN_x8b8g8r8 ||
365 format == PIXMAN_b8g8r8a8 ||
366 format == PIXMAN_b8g8r8x8 ||
367 format == PIXMAN_r5g6b5 ||
368 format == PIXMAN_b5g6r5 ||
369 format == PIXMAN_a8))
374 if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_ABGR)
376 c = ((c & 0xff000000) >> 0) |
377 ((c & 0x00ff0000) >> 16) |
378 ((c & 0x0000ff00) >> 0) |
379 ((c & 0x000000ff) << 16);
381 if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_BGRA)
383 c = ((c & 0xff000000) >> 24) |
384 ((c & 0x00ff0000) >> 8) |
385 ((c & 0x0000ff00) << 8) |
386 ((c & 0x000000ff) << 24);
389 if (format == PIXMAN_a8)
391 else if (format == PIXMAN_r5g6b5 ||
392 format == PIXMAN_b5g6r5)
393 c = CONVERT_8888_TO_0565 (c);
396 printf ("color: %x %x %x %x\n", color->alpha, color->red, color->green, color->blue);
397 printf ("pixel: %x\n", c);
404 PIXMAN_EXPORT pixman_bool_t
405 pixman_image_fill_rectangles (pixman_op_t op,
406 pixman_image_t * dest,
407 pixman_color_t * color,
409 const pixman_rectangle16_t *rects)
411 pixman_box32_t stack_boxes[6];
412 pixman_box32_t *boxes;
413 pixman_bool_t result;
418 boxes = pixman_malloc_ab (sizeof (pixman_box32_t), n_rects);
427 for (i = 0; i < n_rects; ++i)
429 boxes[i].x1 = rects[i].x;
430 boxes[i].y1 = rects[i].y;
431 boxes[i].x2 = boxes[i].x1 + rects[i].width;
432 boxes[i].y2 = boxes[i].y1 + rects[i].height;
435 result = pixman_image_fill_boxes (op, dest, color, n_rects, boxes);
437 if (boxes != stack_boxes)
443 PIXMAN_EXPORT pixman_bool_t
444 pixman_image_fill_boxes (pixman_op_t op,
445 pixman_image_t * dest,
446 pixman_color_t * color,
448 const pixman_box32_t *boxes)
450 pixman_image_t *solid;
454 _pixman_image_validate (dest);
456 if (color->alpha == 0xffff)
458 if (op == PIXMAN_OP_OVER)
462 if (op == PIXMAN_OP_CLEAR)
474 if (op == PIXMAN_OP_SRC)
478 if (color_to_pixel (color, &pixel, dest->bits.format))
480 pixman_region32_t fill_region;
482 pixman_box32_t *rects;
484 if (!pixman_region32_init_rects (&fill_region, boxes, n_boxes))
487 if (dest->common.have_clip_region)
489 if (!pixman_region32_intersect (&fill_region,
491 &dest->common.clip_region))
495 rects = pixman_region32_rectangles (&fill_region, &n_rects);
496 for (j = 0; j < n_rects; ++j)
498 const pixman_box32_t *rect = &(rects[j]);
499 pixman_fill (dest->bits.bits, dest->bits.rowstride, PIXMAN_FORMAT_BPP (dest->bits.format),
500 rect->x1, rect->y1, rect->x2 - rect->x1, rect->y2 - rect->y1,
504 pixman_region32_fini (&fill_region);
509 solid = pixman_image_create_solid_fill (color);
513 for (i = 0; i < n_boxes; ++i)
515 const pixman_box32_t *box = &(boxes[i]);
517 pixman_image_composite32 (op, solid, NULL, dest,
520 box->x2 - box->x1, box->y2 - box->y1);
523 pixman_image_unref (solid);
531 * Returns the version of the pixman library encoded in a single
532 * integer as per %PIXMAN_VERSION_ENCODE. The encoding ensures that
533 * later versions compare greater than earlier versions.
535 * A run-time comparison to check that pixman's version is greater than
536 * or equal to version X.Y.Z could be performed as follows:
538 * <informalexample><programlisting>
539 * if (pixman_version() >= PIXMAN_VERSION_ENCODE(X,Y,Z)) {...}
540 * </programlisting></informalexample>
542 * See also pixman_version_string() as well as the compile-time
543 * equivalents %PIXMAN_VERSION and %PIXMAN_VERSION_STRING.
545 * Return value: the encoded version.
548 pixman_version (void)
550 return PIXMAN_VERSION;
554 * pixman_version_string:
556 * Returns the version of the pixman library as a human-readable string
557 * of the form "X.Y.Z".
559 * See also pixman_version() as well as the compile-time equivalents
560 * %PIXMAN_VERSION_STRING and %PIXMAN_VERSION.
562 * Return value: a string containing the version.
564 PIXMAN_EXPORT const char*
565 pixman_version_string (void)
567 return PIXMAN_VERSION_STRING;
571 * pixman_format_supported_source:
572 * @format: A pixman_format_code_t format
574 * Return value: whether the provided format code is a supported
575 * format for a pixman surface used as a source in
578 * Currently, all pixman_format_code_t values are supported.
580 PIXMAN_EXPORT pixman_bool_t
581 pixman_format_supported_source (pixman_format_code_t format)
586 case PIXMAN_a2b10g10r10:
587 case PIXMAN_x2b10g10r10:
588 case PIXMAN_a2r10g10b10:
589 case PIXMAN_x2r10g10b10:
590 case PIXMAN_a8r8g8b8:
591 case PIXMAN_x8r8g8b8:
592 case PIXMAN_a8b8g8r8:
593 case PIXMAN_x8b8g8r8:
594 case PIXMAN_b8g8r8a8:
595 case PIXMAN_b8g8r8x8:
601 case PIXMAN_a1r5g5b5:
602 case PIXMAN_x1r5g5b5:
603 case PIXMAN_a1b5g5r5:
604 case PIXMAN_x1b5g5r5:
605 case PIXMAN_a4r4g4b4:
606 case PIXMAN_x4r4g4b4:
607 case PIXMAN_a4b4g4r4:
608 case PIXMAN_x4b4g4r4:
613 case PIXMAN_a2r2g2b2:
614 case PIXMAN_a2b2g2r2:
618 /* Collides with PIXMAN_c8
621 /* Collides with PIXMAN_g8
628 case PIXMAN_a1r1g1b1:
629 case PIXMAN_a1b1g1r1:
646 * pixman_format_supported_destination:
647 * @format: A pixman_format_code_t format
649 * Return value: whether the provided format code is a supported
650 * format for a pixman surface used as a destination in
653 * Currently, all pixman_format_code_t values are supported
654 * except for the YUV formats.
656 PIXMAN_EXPORT pixman_bool_t
657 pixman_format_supported_destination (pixman_format_code_t format)
659 /* YUV formats cannot be written to at the moment */
660 if (format == PIXMAN_yuy2 || format == PIXMAN_yv12)
663 return pixman_format_supported_source (format);