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 /* Some X servers generate images that point to the
121 * wrong place in memory, but then set the clip region
122 * to point to the right place. Because of an old bug
123 * in pixman, this would actually work.
125 * Here we try and undo the damage
127 int bpp = PIXMAN_FORMAT_BPP (image->bits.format) / 8;
128 pixman_box32_t *extents;
132 extents = pixman_region32_extents (&(image->common.clip_region));
136 *save_bits = image->bits.bits;
140 pixman_region32_translate (&(image->common.clip_region), -dx, -dy);
142 t = (uint8_t *)image->bits.bits;
143 t += dy * image->bits.rowstride * 4 + dx * bpp;
144 image->bits.bits = (uint32_t *)t;
151 unapply_workaround (pixman_image_t *image, uint32_t *bits, int dx, int dy)
153 image->bits.bits = bits;
154 pixman_region32_translate (&image->common.clip_region, dx, dy);
158 pixman_image_composite (pixman_op_t op,
159 pixman_image_t * src,
160 pixman_image_t * mask,
161 pixman_image_t * dest,
171 pixman_image_composite32 (op, src, mask, dest, src_x, src_y,
172 mask_x, mask_y, dest_x, dest_y, width, height);
176 pixman_image_composite32 (pixman_op_t op,
177 pixman_image_t * src,
178 pixman_image_t * mask,
179 pixman_image_t * dest,
192 int mask_dx, mask_dy;
194 int dest_dx, dest_dy;
195 pixman_implementation_t *i;
197 _pixman_image_validate (src);
199 _pixman_image_validate (mask);
200 _pixman_image_validate (dest);
203 * Check if we can replace our operator by a simpler one
204 * if the src or dest are opaque. The output operator should be
205 * mathematically equivalent to the source.
207 op = pixman_optimize_operator(op, src, mask, dest);
208 if (op == PIXMAN_OP_DST ||
209 op == PIXMAN_OP_CONJOINT_DST ||
210 op == PIXMAN_OP_DISJOINT_DST)
216 imp = _pixman_choose_implementation ();
218 if (src->common.need_workaround)
219 apply_workaround (src, &src_x, &src_y, &src_bits, &src_dx, &src_dy);
220 if (mask && mask->common.need_workaround)
221 apply_workaround (mask, &mask_x, &mask_y, &mask_bits, &mask_dx, &mask_dy);
222 if (dest->common.need_workaround)
223 apply_workaround (dest, &dest_x, &dest_y, &dest_bits, &dest_dx, &dest_dy);
225 for (i = imp; i != NULL; i = i->delegate)
227 if (_pixman_run_fast_path (i->fast_paths, imp,
238 if (src->common.need_workaround)
239 unapply_workaround (src, src_bits, src_dx, src_dy);
240 if (mask && mask->common.need_workaround)
241 unapply_workaround (mask, mask_bits, mask_dx, mask_dy);
242 if (dest->common.need_workaround)
243 unapply_workaround (dest, dest_bits, dest_dx, dest_dy);
246 PIXMAN_EXPORT pixman_bool_t
247 pixman_blt (uint32_t *src_bits,
261 imp = _pixman_choose_implementation ();
263 return _pixman_implementation_blt (imp, src_bits, dst_bits, src_stride, dst_stride,
270 PIXMAN_EXPORT pixman_bool_t
271 pixman_fill (uint32_t *bits,
281 imp = _pixman_choose_implementation ();
283 return _pixman_implementation_fill (imp, bits, stride, bpp, x, y, width, height, xor);
287 color_to_uint32 (const pixman_color_t *color)
290 (color->alpha >> 8 << 24) |
291 (color->red >> 8 << 16) |
292 (color->green & 0xff00) |
297 color_to_pixel (pixman_color_t * color,
299 pixman_format_code_t format)
301 uint32_t c = color_to_uint32 (color);
303 if (!(format == PIXMAN_a8r8g8b8 ||
304 format == PIXMAN_x8r8g8b8 ||
305 format == PIXMAN_a8b8g8r8 ||
306 format == PIXMAN_x8b8g8r8 ||
307 format == PIXMAN_b8g8r8a8 ||
308 format == PIXMAN_b8g8r8x8 ||
309 format == PIXMAN_r5g6b5 ||
310 format == PIXMAN_b5g6r5 ||
311 format == PIXMAN_a8))
316 if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_ABGR)
318 c = ((c & 0xff000000) >> 0) |
319 ((c & 0x00ff0000) >> 16) |
320 ((c & 0x0000ff00) >> 0) |
321 ((c & 0x000000ff) << 16);
323 if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_BGRA)
325 c = ((c & 0xff000000) >> 24) |
326 ((c & 0x00ff0000) >> 8) |
327 ((c & 0x0000ff00) << 8) |
328 ((c & 0x000000ff) << 24);
331 if (format == PIXMAN_a8)
333 else if (format == PIXMAN_r5g6b5 ||
334 format == PIXMAN_b5g6r5)
335 c = CONVERT_8888_TO_0565 (c);
338 printf ("color: %x %x %x %x\n", color->alpha, color->red, color->green, color->blue);
339 printf ("pixel: %x\n", c);
346 PIXMAN_EXPORT pixman_bool_t
347 pixman_image_fill_rectangles (pixman_op_t op,
348 pixman_image_t * dest,
349 pixman_color_t * color,
351 const pixman_rectangle16_t *rects)
353 pixman_box32_t stack_boxes[6];
354 pixman_box32_t *boxes;
355 pixman_bool_t result;
360 boxes = pixman_malloc_ab (sizeof (pixman_box32_t), n_rects);
369 for (i = 0; i < n_rects; ++i)
371 boxes[i].x1 = rects[i].x;
372 boxes[i].y1 = rects[i].y;
373 boxes[i].x2 = boxes[i].x1 + rects[i].width;
374 boxes[i].y2 = boxes[i].y1 + rects[i].height;
377 result = pixman_image_fill_boxes (op, dest, color, n_rects, boxes);
379 if (boxes != stack_boxes)
385 PIXMAN_EXPORT pixman_bool_t
386 pixman_image_fill_boxes (pixman_op_t op,
387 pixman_image_t * dest,
388 pixman_color_t * color,
390 const pixman_box32_t *boxes)
392 pixman_image_t *solid;
396 _pixman_image_validate (dest);
398 if (color->alpha == 0xffff)
400 if (op == PIXMAN_OP_OVER)
404 if (op == PIXMAN_OP_CLEAR)
416 if (op == PIXMAN_OP_SRC)
420 if (color_to_pixel (color, &pixel, dest->bits.format))
422 pixman_region32_t fill_region;
424 pixman_box32_t *rects;
426 if (!pixman_region32_init_rects (&fill_region, boxes, n_boxes))
429 if (dest->common.have_clip_region)
431 if (!pixman_region32_intersect (&fill_region,
433 &dest->common.clip_region))
437 rects = pixman_region32_rectangles (&fill_region, &n_rects);
438 for (j = 0; j < n_rects; ++j)
440 const pixman_box32_t *rect = &(rects[j]);
441 pixman_fill (dest->bits.bits, dest->bits.rowstride, PIXMAN_FORMAT_BPP (dest->bits.format),
442 rect->x1, rect->y1, rect->x2 - rect->x1, rect->y2 - rect->y1,
446 pixman_region32_fini (&fill_region);
451 solid = pixman_image_create_solid_fill (color);
455 for (i = 0; i < n_boxes; ++i)
457 const pixman_box32_t *box = &(boxes[i]);
459 pixman_image_composite32 (op, solid, NULL, dest,
462 box->x2 - box->x1, box->y2 - box->y1);
465 pixman_image_unref (solid);
473 * Returns the version of the pixman library encoded in a single
474 * integer as per %PIXMAN_VERSION_ENCODE. The encoding ensures that
475 * later versions compare greater than earlier versions.
477 * A run-time comparison to check that pixman's version is greater than
478 * or equal to version X.Y.Z could be performed as follows:
480 * <informalexample><programlisting>
481 * if (pixman_version() >= PIXMAN_VERSION_ENCODE(X,Y,Z)) {...}
482 * </programlisting></informalexample>
484 * See also pixman_version_string() as well as the compile-time
485 * equivalents %PIXMAN_VERSION and %PIXMAN_VERSION_STRING.
487 * Return value: the encoded version.
490 pixman_version (void)
492 return PIXMAN_VERSION;
496 * pixman_version_string:
498 * Returns the version of the pixman library as a human-readable string
499 * of the form "X.Y.Z".
501 * See also pixman_version() as well as the compile-time equivalents
502 * %PIXMAN_VERSION_STRING and %PIXMAN_VERSION.
504 * Return value: a string containing the version.
506 PIXMAN_EXPORT const char*
507 pixman_version_string (void)
509 return PIXMAN_VERSION_STRING;
513 * pixman_format_supported_source:
514 * @format: A pixman_format_code_t format
516 * Return value: whether the provided format code is a supported
517 * format for a pixman surface used as a source in
520 * Currently, all pixman_format_code_t values are supported.
522 PIXMAN_EXPORT pixman_bool_t
523 pixman_format_supported_source (pixman_format_code_t format)
528 case PIXMAN_a2b10g10r10:
529 case PIXMAN_x2b10g10r10:
530 case PIXMAN_a2r10g10b10:
531 case PIXMAN_x2r10g10b10:
532 case PIXMAN_a8r8g8b8:
533 case PIXMAN_x8r8g8b8:
534 case PIXMAN_a8b8g8r8:
535 case PIXMAN_x8b8g8r8:
536 case PIXMAN_b8g8r8a8:
537 case PIXMAN_b8g8r8x8:
543 case PIXMAN_a1r5g5b5:
544 case PIXMAN_x1r5g5b5:
545 case PIXMAN_a1b5g5r5:
546 case PIXMAN_x1b5g5r5:
547 case PIXMAN_a4r4g4b4:
548 case PIXMAN_x4r4g4b4:
549 case PIXMAN_a4b4g4r4:
550 case PIXMAN_x4b4g4r4:
555 case PIXMAN_a2r2g2b2:
556 case PIXMAN_a2b2g2r2:
560 /* Collides with PIXMAN_c8
563 /* Collides with PIXMAN_g8
570 case PIXMAN_a1r1g1b1:
571 case PIXMAN_a1b1g1r1:
588 * pixman_format_supported_destination:
589 * @format: A pixman_format_code_t format
591 * Return value: whether the provided format code is a supported
592 * format for a pixman surface used as a destination in
595 * Currently, all pixman_format_code_t values are supported
596 * except for the YUV formats.
598 PIXMAN_EXPORT pixman_bool_t
599 pixman_format_supported_destination (pixman_format_code_t format)
601 /* YUV formats cannot be written to at the moment */
602 if (format == PIXMAN_yuy2 || format == PIXMAN_yv12)
605 return pixman_format_supported_source (format);