Rev 1891 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
1891 | serge | 1 | /* -*- Mode: c; c-basic-offset: 4; tab-width: 8; indent-tabs-mode: t; -*- */ |
2 | /* |
||
3 | * Copyright © 2000 SuSE, Inc. |
||
4 | * Copyright © 2007 Red Hat, Inc. |
||
5 | * |
||
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. |
||
15 | * |
||
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. |
||
22 | * |
||
23 | * Author: Keith Packard, SuSE, Inc. |
||
24 | */ |
||
25 | |||
26 | #ifdef HAVE_CONFIG_H |
||
27 | #include |
||
28 | #endif |
||
29 | #include "pixman-private.h" |
||
30 | |||
31 | #include |
||
32 | |||
3931 | Serge | 33 | pixman_implementation_t *global_implementation; |
34 | |||
35 | #ifdef TOOLCHAIN_SUPPORTS_ATTRIBUTE_CONSTRUCTOR |
||
36 | static void __attribute__((constructor)) |
||
37 | pixman_constructor (void) |
||
1891 | serge | 38 | { |
3931 | Serge | 39 | global_implementation = _pixman_choose_implementation (); |
1891 | serge | 40 | } |
3931 | Serge | 41 | #endif |
1891 | serge | 42 | |
43 | typedef struct operator_info_t operator_info_t; |
||
44 | |||
45 | struct operator_info_t |
||
46 | { |
||
47 | uint8_t opaque_info[4]; |
||
48 | }; |
||
49 | |||
50 | #define PACK(neither, src, dest, both) \ |
||
51 | {{ (uint8_t)PIXMAN_OP_ ## neither, \ |
||
52 | (uint8_t)PIXMAN_OP_ ## src, \ |
||
53 | (uint8_t)PIXMAN_OP_ ## dest, \ |
||
54 | (uint8_t)PIXMAN_OP_ ## both }} |
||
55 | |||
56 | static const operator_info_t operator_table[] = |
||
57 | { |
||
58 | /* Neither Opaque Src Opaque Dst Opaque Both Opaque */ |
||
59 | PACK (CLEAR, CLEAR, CLEAR, CLEAR), |
||
60 | PACK (SRC, SRC, SRC, SRC), |
||
61 | PACK (DST, DST, DST, DST), |
||
62 | PACK (OVER, SRC, OVER, SRC), |
||
63 | PACK (OVER_REVERSE, OVER_REVERSE, DST, DST), |
||
64 | PACK (IN, IN, SRC, SRC), |
||
65 | PACK (IN_REVERSE, DST, IN_REVERSE, DST), |
||
66 | PACK (OUT, OUT, CLEAR, CLEAR), |
||
67 | PACK (OUT_REVERSE, CLEAR, OUT_REVERSE, CLEAR), |
||
68 | PACK (ATOP, IN, OVER, SRC), |
||
69 | PACK (ATOP_REVERSE, OVER_REVERSE, IN_REVERSE, DST), |
||
70 | PACK (XOR, OUT, OUT_REVERSE, CLEAR), |
||
71 | PACK (ADD, ADD, ADD, ADD), |
||
72 | PACK (SATURATE, OVER_REVERSE, DST, DST), |
||
73 | |||
74 | {{ 0 /* 0x0e */ }}, |
||
75 | {{ 0 /* 0x0f */ }}, |
||
76 | |||
77 | PACK (CLEAR, CLEAR, CLEAR, CLEAR), |
||
78 | PACK (SRC, SRC, SRC, SRC), |
||
79 | PACK (DST, DST, DST, DST), |
||
80 | PACK (DISJOINT_OVER, DISJOINT_OVER, DISJOINT_OVER, DISJOINT_OVER), |
||
81 | PACK (DISJOINT_OVER_REVERSE, DISJOINT_OVER_REVERSE, DISJOINT_OVER_REVERSE, DISJOINT_OVER_REVERSE), |
||
82 | PACK (DISJOINT_IN, DISJOINT_IN, DISJOINT_IN, DISJOINT_IN), |
||
83 | PACK (DISJOINT_IN_REVERSE, DISJOINT_IN_REVERSE, DISJOINT_IN_REVERSE, DISJOINT_IN_REVERSE), |
||
84 | PACK (DISJOINT_OUT, DISJOINT_OUT, DISJOINT_OUT, DISJOINT_OUT), |
||
85 | PACK (DISJOINT_OUT_REVERSE, DISJOINT_OUT_REVERSE, DISJOINT_OUT_REVERSE, DISJOINT_OUT_REVERSE), |
||
86 | PACK (DISJOINT_ATOP, DISJOINT_ATOP, DISJOINT_ATOP, DISJOINT_ATOP), |
||
87 | PACK (DISJOINT_ATOP_REVERSE, DISJOINT_ATOP_REVERSE, DISJOINT_ATOP_REVERSE, DISJOINT_ATOP_REVERSE), |
||
88 | PACK (DISJOINT_XOR, DISJOINT_XOR, DISJOINT_XOR, DISJOINT_XOR), |
||
89 | |||
90 | {{ 0 /* 0x1c */ }}, |
||
91 | {{ 0 /* 0x1d */ }}, |
||
92 | {{ 0 /* 0x1e */ }}, |
||
93 | {{ 0 /* 0x1f */ }}, |
||
94 | |||
95 | PACK (CLEAR, CLEAR, CLEAR, CLEAR), |
||
96 | PACK (SRC, SRC, SRC, SRC), |
||
97 | PACK (DST, DST, DST, DST), |
||
98 | PACK (CONJOINT_OVER, CONJOINT_OVER, CONJOINT_OVER, CONJOINT_OVER), |
||
99 | PACK (CONJOINT_OVER_REVERSE, CONJOINT_OVER_REVERSE, CONJOINT_OVER_REVERSE, CONJOINT_OVER_REVERSE), |
||
100 | PACK (CONJOINT_IN, CONJOINT_IN, CONJOINT_IN, CONJOINT_IN), |
||
101 | PACK (CONJOINT_IN_REVERSE, CONJOINT_IN_REVERSE, CONJOINT_IN_REVERSE, CONJOINT_IN_REVERSE), |
||
102 | PACK (CONJOINT_OUT, CONJOINT_OUT, CONJOINT_OUT, CONJOINT_OUT), |
||
103 | PACK (CONJOINT_OUT_REVERSE, CONJOINT_OUT_REVERSE, CONJOINT_OUT_REVERSE, CONJOINT_OUT_REVERSE), |
||
104 | PACK (CONJOINT_ATOP, CONJOINT_ATOP, CONJOINT_ATOP, CONJOINT_ATOP), |
||
105 | PACK (CONJOINT_ATOP_REVERSE, CONJOINT_ATOP_REVERSE, CONJOINT_ATOP_REVERSE, CONJOINT_ATOP_REVERSE), |
||
106 | PACK (CONJOINT_XOR, CONJOINT_XOR, CONJOINT_XOR, CONJOINT_XOR), |
||
107 | |||
108 | {{ 0 /* 0x2c */ }}, |
||
109 | {{ 0 /* 0x2d */ }}, |
||
110 | {{ 0 /* 0x2e */ }}, |
||
111 | {{ 0 /* 0x2f */ }}, |
||
112 | |||
113 | PACK (MULTIPLY, MULTIPLY, MULTIPLY, MULTIPLY), |
||
114 | PACK (SCREEN, SCREEN, SCREEN, SCREEN), |
||
115 | PACK (OVERLAY, OVERLAY, OVERLAY, OVERLAY), |
||
116 | PACK (DARKEN, DARKEN, DARKEN, DARKEN), |
||
117 | PACK (LIGHTEN, LIGHTEN, LIGHTEN, LIGHTEN), |
||
118 | PACK (COLOR_DODGE, COLOR_DODGE, COLOR_DODGE, COLOR_DODGE), |
||
119 | PACK (COLOR_BURN, COLOR_BURN, COLOR_BURN, COLOR_BURN), |
||
120 | PACK (HARD_LIGHT, HARD_LIGHT, HARD_LIGHT, HARD_LIGHT), |
||
121 | PACK (SOFT_LIGHT, SOFT_LIGHT, SOFT_LIGHT, SOFT_LIGHT), |
||
122 | PACK (DIFFERENCE, DIFFERENCE, DIFFERENCE, DIFFERENCE), |
||
123 | PACK (EXCLUSION, EXCLUSION, EXCLUSION, EXCLUSION), |
||
124 | PACK (HSL_HUE, HSL_HUE, HSL_HUE, HSL_HUE), |
||
125 | PACK (HSL_SATURATION, HSL_SATURATION, HSL_SATURATION, HSL_SATURATION), |
||
126 | PACK (HSL_COLOR, HSL_COLOR, HSL_COLOR, HSL_COLOR), |
||
127 | PACK (HSL_LUMINOSITY, HSL_LUMINOSITY, HSL_LUMINOSITY, HSL_LUMINOSITY), |
||
128 | }; |
||
129 | |||
130 | /* |
||
131 | * Optimize the current operator based on opacity of source or destination |
||
132 | * The output operator should be mathematically equivalent to the source. |
||
133 | */ |
||
134 | static pixman_op_t |
||
135 | optimize_operator (pixman_op_t op, |
||
136 | uint32_t src_flags, |
||
137 | uint32_t mask_flags, |
||
138 | uint32_t dst_flags) |
||
139 | { |
||
140 | pixman_bool_t is_source_opaque, is_dest_opaque; |
||
141 | |||
142 | #define OPAQUE_SHIFT 13 |
||
143 | |||
144 | COMPILE_TIME_ASSERT (FAST_PATH_IS_OPAQUE == (1 << OPAQUE_SHIFT)); |
||
145 | |||
146 | is_dest_opaque = (dst_flags & FAST_PATH_IS_OPAQUE); |
||
147 | is_source_opaque = ((src_flags & mask_flags) & FAST_PATH_IS_OPAQUE); |
||
148 | |||
149 | is_dest_opaque >>= OPAQUE_SHIFT - 1; |
||
150 | is_source_opaque >>= OPAQUE_SHIFT; |
||
151 | |||
152 | return operator_table[op].opaque_info[is_dest_opaque | is_source_opaque]; |
||
153 | } |
||
154 | |||
155 | /* |
||
156 | * Computing composite region |
||
157 | */ |
||
158 | static inline pixman_bool_t |
||
159 | clip_general_image (pixman_region32_t * region, |
||
160 | pixman_region32_t * clip, |
||
161 | int dx, |
||
162 | int dy) |
||
163 | { |
||
164 | if (pixman_region32_n_rects (region) == 1 && |
||
165 | pixman_region32_n_rects (clip) == 1) |
||
166 | { |
||
167 | pixman_box32_t * rbox = pixman_region32_rectangles (region, NULL); |
||
168 | pixman_box32_t * cbox = pixman_region32_rectangles (clip, NULL); |
||
169 | int v; |
||
170 | |||
171 | if (rbox->x1 < (v = cbox->x1 + dx)) |
||
172 | rbox->x1 = v; |
||
173 | if (rbox->x2 > (v = cbox->x2 + dx)) |
||
174 | rbox->x2 = v; |
||
175 | if (rbox->y1 < (v = cbox->y1 + dy)) |
||
176 | rbox->y1 = v; |
||
177 | if (rbox->y2 > (v = cbox->y2 + dy)) |
||
178 | rbox->y2 = v; |
||
179 | if (rbox->x1 >= rbox->x2 || rbox->y1 >= rbox->y2) |
||
180 | { |
||
181 | pixman_region32_init (region); |
||
182 | return FALSE; |
||
183 | } |
||
184 | } |
||
185 | else if (!pixman_region32_not_empty (clip)) |
||
186 | { |
||
187 | return FALSE; |
||
188 | } |
||
189 | else |
||
190 | { |
||
191 | if (dx || dy) |
||
192 | pixman_region32_translate (region, -dx, -dy); |
||
193 | |||
194 | if (!pixman_region32_intersect (region, region, clip)) |
||
195 | return FALSE; |
||
196 | |||
197 | if (dx || dy) |
||
198 | pixman_region32_translate (region, dx, dy); |
||
199 | } |
||
200 | |||
201 | return pixman_region32_not_empty (region); |
||
202 | } |
||
203 | |||
204 | static inline pixman_bool_t |
||
205 | clip_source_image (pixman_region32_t * region, |
||
206 | pixman_image_t * image, |
||
207 | int dx, |
||
208 | int dy) |
||
209 | { |
||
210 | /* Source clips are ignored, unless they are explicitly turned on |
||
211 | * and the clip in question was set by an X client. (Because if |
||
212 | * the clip was not set by a client, then it is a hierarchy |
||
213 | * clip and those should always be ignored for sources). |
||
214 | */ |
||
215 | if (!image->common.clip_sources || !image->common.client_clip) |
||
216 | return TRUE; |
||
217 | |||
218 | return clip_general_image (region, |
||
219 | &image->common.clip_region, |
||
220 | dx, dy); |
||
221 | } |
||
222 | |||
223 | /* |
||
224 | * returns FALSE if the final region is empty. Indistinguishable from |
||
225 | * an allocation failure, but rendering ignores those anyways. |
||
226 | */ |
||
3931 | Serge | 227 | pixman_bool_t |
228 | _pixman_compute_composite_region32 (pixman_region32_t * region, |
||
229 | pixman_image_t * src_image, |
||
230 | pixman_image_t * mask_image, |
||
231 | pixman_image_t * dest_image, |
||
232 | int32_t src_x, |
||
233 | int32_t src_y, |
||
234 | int32_t mask_x, |
||
235 | int32_t mask_y, |
||
236 | int32_t dest_x, |
||
237 | int32_t dest_y, |
||
238 | int32_t width, |
||
239 | int32_t height) |
||
1891 | serge | 240 | { |
241 | region->extents.x1 = dest_x; |
||
242 | region->extents.x2 = dest_x + width; |
||
243 | region->extents.y1 = dest_y; |
||
244 | region->extents.y2 = dest_y + height; |
||
245 | |||
246 | region->extents.x1 = MAX (region->extents.x1, 0); |
||
247 | region->extents.y1 = MAX (region->extents.y1, 0); |
||
3931 | Serge | 248 | region->extents.x2 = MIN (region->extents.x2, dest_image->bits.width); |
249 | region->extents.y2 = MIN (region->extents.y2, dest_image->bits.height); |
||
1891 | serge | 250 | |
251 | region->data = 0; |
||
252 | |||
253 | /* Check for empty operation */ |
||
254 | if (region->extents.x1 >= region->extents.x2 || |
||
255 | region->extents.y1 >= region->extents.y2) |
||
256 | { |
||
257 | region->extents.x1 = 0; |
||
258 | region->extents.x2 = 0; |
||
259 | region->extents.y1 = 0; |
||
260 | region->extents.y2 = 0; |
||
261 | return FALSE; |
||
262 | } |
||
263 | |||
3931 | Serge | 264 | if (dest_image->common.have_clip_region) |
1891 | serge | 265 | { |
3931 | Serge | 266 | if (!clip_general_image (region, &dest_image->common.clip_region, 0, 0)) |
1891 | serge | 267 | return FALSE; |
268 | } |
||
269 | |||
3931 | Serge | 270 | if (dest_image->common.alpha_map) |
1891 | serge | 271 | { |
272 | if (!pixman_region32_intersect_rect (region, region, |
||
3931 | Serge | 273 | dest_image->common.alpha_origin_x, |
274 | dest_image->common.alpha_origin_y, |
||
275 | dest_image->common.alpha_map->width, |
||
276 | dest_image->common.alpha_map->height)) |
||
1891 | serge | 277 | { |
278 | return FALSE; |
||
279 | } |
||
280 | if (!pixman_region32_not_empty (region)) |
||
281 | return FALSE; |
||
3931 | Serge | 282 | if (dest_image->common.alpha_map->common.have_clip_region) |
1891 | serge | 283 | { |
3931 | Serge | 284 | if (!clip_general_image (region, &dest_image->common.alpha_map->common.clip_region, |
285 | -dest_image->common.alpha_origin_x, |
||
286 | -dest_image->common.alpha_origin_y)) |
||
1891 | serge | 287 | { |
288 | return FALSE; |
||
289 | } |
||
290 | } |
||
291 | } |
||
292 | |||
293 | /* clip against src */ |
||
294 | if (src_image->common.have_clip_region) |
||
295 | { |
||
296 | if (!clip_source_image (region, src_image, dest_x - src_x, dest_y - src_y)) |
||
297 | return FALSE; |
||
298 | } |
||
299 | if (src_image->common.alpha_map && src_image->common.alpha_map->common.have_clip_region) |
||
300 | { |
||
301 | if (!clip_source_image (region, (pixman_image_t *)src_image->common.alpha_map, |
||
302 | dest_x - (src_x - src_image->common.alpha_origin_x), |
||
303 | dest_y - (src_y - src_image->common.alpha_origin_y))) |
||
304 | { |
||
305 | return FALSE; |
||
306 | } |
||
307 | } |
||
308 | /* clip against mask */ |
||
309 | if (mask_image && mask_image->common.have_clip_region) |
||
310 | { |
||
311 | if (!clip_source_image (region, mask_image, dest_x - mask_x, dest_y - mask_y)) |
||
312 | return FALSE; |
||
313 | |||
314 | if (mask_image->common.alpha_map && mask_image->common.alpha_map->common.have_clip_region) |
||
315 | { |
||
316 | if (!clip_source_image (region, (pixman_image_t *)mask_image->common.alpha_map, |
||
317 | dest_x - (mask_x - mask_image->common.alpha_origin_x), |
||
318 | dest_y - (mask_y - mask_image->common.alpha_origin_y))) |
||
319 | { |
||
320 | return FALSE; |
||
321 | } |
||
322 | } |
||
323 | } |
||
324 | |||
325 | return TRUE; |
||
326 | } |
||
327 | |||
328 | typedef struct |
||
329 | { |
||
3931 | Serge | 330 | pixman_fixed_48_16_t x1; |
331 | pixman_fixed_48_16_t y1; |
||
332 | pixman_fixed_48_16_t x2; |
||
333 | pixman_fixed_48_16_t y2; |
||
334 | } box_48_16_t; |
||
1891 | serge | 335 | |
3931 | Serge | 336 | static pixman_bool_t |
337 | compute_transformed_extents (pixman_transform_t *transform, |
||
338 | const pixman_box32_t *extents, |
||
339 | box_48_16_t *transformed) |
||
1891 | serge | 340 | { |
3931 | Serge | 341 | pixman_fixed_48_16_t tx1, ty1, tx2, ty2; |
342 | pixman_fixed_t x1, y1, x2, y2; |
||
1891 | serge | 343 | int i; |
344 | |||
3931 | Serge | 345 | x1 = pixman_int_to_fixed (extents->x1) + pixman_fixed_1 / 2; |
346 | y1 = pixman_int_to_fixed (extents->y1) + pixman_fixed_1 / 2; |
||
347 | x2 = pixman_int_to_fixed (extents->x2) - pixman_fixed_1 / 2; |
||
348 | y2 = pixman_int_to_fixed (extents->y2) - pixman_fixed_1 / 2; |
||
1891 | serge | 349 | |
3931 | Serge | 350 | if (!transform) |
1891 | serge | 351 | { |
3931 | Serge | 352 | transformed->x1 = x1; |
353 | transformed->y1 = y1; |
||
354 | transformed->x2 = x2; |
||
355 | transformed->y2 = y2; |
||
1891 | serge | 356 | |
3931 | Serge | 357 | return TRUE; |
1891 | serge | 358 | } |
359 | |||
3931 | Serge | 360 | tx1 = ty1 = INT64_MAX; |
361 | tx2 = ty2 = INT64_MIN; |
||
362 | |||
363 | for (i = 0; i < 4; ++i) |
||
1891 | serge | 364 | { |
3931 | Serge | 365 | pixman_fixed_48_16_t tx, ty; |
366 | pixman_vector_t v; |
||
1891 | serge | 367 | |
3931 | Serge | 368 | v.vector[0] = (i & 0x01)? x1 : x2; |
369 | v.vector[1] = (i & 0x02)? y1 : y2; |
||
370 | v.vector[2] = pixman_fixed_1; |
||
1891 | serge | 371 | |
3931 | Serge | 372 | if (!pixman_transform_point (transform, &v)) |
373 | return FALSE; |
||
1891 | serge | 374 | |
3931 | Serge | 375 | tx = (pixman_fixed_48_16_t)v.vector[0]; |
376 | ty = (pixman_fixed_48_16_t)v.vector[1]; |
||
1891 | serge | 377 | |
3931 | Serge | 378 | if (tx < tx1) |
379 | tx1 = tx; |
||
380 | if (ty < ty1) |
||
381 | ty1 = ty; |
||
382 | if (tx > tx2) |
||
383 | tx2 = tx; |
||
384 | if (ty > ty2) |
||
385 | ty2 = ty; |
||
1891 | serge | 386 | } |
387 | |||
3931 | Serge | 388 | transformed->x1 = tx1; |
389 | transformed->y1 = ty1; |
||
390 | transformed->x2 = tx2; |
||
391 | transformed->y2 = ty2; |
||
1891 | serge | 392 | |
393 | return TRUE; |
||
394 | } |
||
395 | |||
396 | #define IS_16BIT(x) (((x) >= INT16_MIN) && ((x) <= INT16_MAX)) |
||
3931 | Serge | 397 | #define ABS(f) (((f) < 0)? (-(f)) : (f)) |
398 | #define IS_16_16(f) (((f) >= pixman_min_fixed_48_16 && ((f) <= pixman_max_fixed_48_16))) |
||
1891 | serge | 399 | |
400 | static pixman_bool_t |
||
3931 | Serge | 401 | analyze_extent (pixman_image_t *image, |
402 | const pixman_box32_t *extents, |
||
403 | uint32_t *flags) |
||
1891 | serge | 404 | { |
405 | pixman_transform_t *transform; |
||
406 | pixman_fixed_t x_off, y_off; |
||
407 | pixman_fixed_t width, height; |
||
3931 | Serge | 408 | pixman_fixed_t *params; |
409 | box_48_16_t transformed; |
||
410 | pixman_box32_t exp_extents; |
||
1891 | serge | 411 | |
412 | if (!image) |
||
413 | return TRUE; |
||
414 | |||
415 | /* Some compositing functions walk one step |
||
416 | * outside the destination rectangle, so we |
||
417 | * check here that the expanded-by-one source |
||
418 | * extents in destination space fits in 16 bits |
||
419 | */ |
||
3931 | Serge | 420 | if (!IS_16BIT (extents->x1 - 1) || |
421 | !IS_16BIT (extents->y1 - 1) || |
||
422 | !IS_16BIT (extents->x2 + 1) || |
||
423 | !IS_16BIT (extents->y2 + 1)) |
||
1891 | serge | 424 | { |
425 | return FALSE; |
||
426 | } |
||
427 | |||
428 | transform = image->common.transform; |
||
429 | if (image->common.type == BITS) |
||
430 | { |
||
431 | /* During repeat mode calculations we might convert the |
||
432 | * width/height of an image to fixed 16.16, so we need |
||
433 | * them to be smaller than 16 bits. |
||
434 | */ |
||
435 | if (image->bits.width >= 0x7fff || image->bits.height >= 0x7fff) |
||
436 | return FALSE; |
||
437 | |||
3931 | Serge | 438 | if ((image->common.flags & FAST_PATH_ID_TRANSFORM) == FAST_PATH_ID_TRANSFORM && |
439 | extents->x1 >= 0 && |
||
440 | extents->y1 >= 0 && |
||
441 | extents->x2 <= image->bits.width && |
||
442 | extents->y2 <= image->bits.height) |
||
1891 | serge | 443 | { |
3931 | Serge | 444 | *flags |= FAST_PATH_SAMPLES_COVER_CLIP_NEAREST; |
1891 | serge | 445 | return TRUE; |
446 | } |
||
3931 | Serge | 447 | |
1891 | serge | 448 | switch (image->common.filter) |
449 | { |
||
450 | case PIXMAN_FILTER_CONVOLUTION: |
||
451 | params = image->common.filter_params; |
||
452 | x_off = - pixman_fixed_e - ((params[0] - pixman_fixed_1) >> 1); |
||
453 | y_off = - pixman_fixed_e - ((params[1] - pixman_fixed_1) >> 1); |
||
454 | width = params[0]; |
||
455 | height = params[1]; |
||
456 | break; |
||
457 | |||
3931 | Serge | 458 | case PIXMAN_FILTER_SEPARABLE_CONVOLUTION: |
459 | params = image->common.filter_params; |
||
460 | x_off = - pixman_fixed_e - ((params[0] - pixman_fixed_1) >> 1); |
||
461 | y_off = - pixman_fixed_e - ((params[1] - pixman_fixed_1) >> 1); |
||
462 | width = params[0]; |
||
463 | height = params[1]; |
||
464 | break; |
||
465 | |||
1891 | serge | 466 | case PIXMAN_FILTER_GOOD: |
467 | case PIXMAN_FILTER_BEST: |
||
468 | case PIXMAN_FILTER_BILINEAR: |
||
469 | x_off = - pixman_fixed_1 / 2; |
||
470 | y_off = - pixman_fixed_1 / 2; |
||
471 | width = pixman_fixed_1; |
||
472 | height = pixman_fixed_1; |
||
473 | break; |
||
474 | |||
475 | case PIXMAN_FILTER_FAST: |
||
476 | case PIXMAN_FILTER_NEAREST: |
||
477 | x_off = - pixman_fixed_e; |
||
478 | y_off = - pixman_fixed_e; |
||
479 | width = 0; |
||
480 | height = 0; |
||
481 | break; |
||
482 | |||
483 | default: |
||
484 | return FALSE; |
||
485 | } |
||
486 | } |
||
487 | else |
||
488 | { |
||
489 | x_off = 0; |
||
490 | y_off = 0; |
||
491 | width = 0; |
||
492 | height = 0; |
||
493 | } |
||
494 | |||
3931 | Serge | 495 | if (!compute_transformed_extents (transform, extents, &transformed)) |
496 | return FALSE; |
||
497 | |||
498 | /* Expand the source area by a tiny bit so account of different rounding that |
||
499 | * may happen during sampling. Note that (8 * pixman_fixed_e) is very far from |
||
500 | * 0.5 so this won't cause the area computed to be overly pessimistic. |
||
1891 | serge | 501 | */ |
3931 | Serge | 502 | transformed.x1 -= 8 * pixman_fixed_e; |
503 | transformed.y1 -= 8 * pixman_fixed_e; |
||
504 | transformed.x2 += 8 * pixman_fixed_e; |
||
505 | transformed.y2 += 8 * pixman_fixed_e; |
||
1891 | serge | 506 | |
3931 | Serge | 507 | if (image->common.type == BITS) |
508 | { |
||
509 | if (pixman_fixed_to_int (transformed.x1) >= 0 && |
||
510 | pixman_fixed_to_int (transformed.y1) >= 0 && |
||
511 | pixman_fixed_to_int (transformed.x2) < image->bits.width && |
||
512 | pixman_fixed_to_int (transformed.y2) < image->bits.height) |
||
513 | { |
||
514 | *flags |= FAST_PATH_SAMPLES_COVER_CLIP_NEAREST; |
||
515 | } |
||
516 | |||
517 | if (pixman_fixed_to_int (transformed.x1 - pixman_fixed_1 / 2) >= 0 && |
||
518 | pixman_fixed_to_int (transformed.y1 - pixman_fixed_1 / 2) >= 0 && |
||
519 | pixman_fixed_to_int (transformed.x2 + pixman_fixed_1 / 2) < image->bits.width && |
||
520 | pixman_fixed_to_int (transformed.y2 + pixman_fixed_1 / 2) < image->bits.height) |
||
521 | { |
||
522 | *flags |= FAST_PATH_SAMPLES_COVER_CLIP_BILINEAR; |
||
523 | } |
||
524 | } |
||
525 | |||
526 | /* Check we don't overflow when the destination extents are expanded by one. |
||
527 | * This ensures that compositing functions can simply walk the source space |
||
528 | * using 16.16 variables without worrying about overflow. |
||
529 | */ |
||
530 | exp_extents = *extents; |
||
531 | exp_extents.x1 -= 1; |
||
532 | exp_extents.y1 -= 1; |
||
533 | exp_extents.x2 += 1; |
||
534 | exp_extents.y2 += 1; |
||
535 | |||
536 | if (!compute_transformed_extents (transform, &exp_extents, &transformed)) |
||
1891 | serge | 537 | return FALSE; |
3931 | Serge | 538 | |
539 | if (!IS_16_16 (transformed.x1 + x_off - 8 * pixman_fixed_e) || |
||
540 | !IS_16_16 (transformed.y1 + y_off - 8 * pixman_fixed_e) || |
||
541 | !IS_16_16 (transformed.x2 + x_off + 8 * pixman_fixed_e + width) || |
||
542 | !IS_16_16 (transformed.y2 + y_off + 8 * pixman_fixed_e + height)) |
||
543 | { |
||
544 | return FALSE; |
||
545 | } |
||
1891 | serge | 546 | |
547 | return TRUE; |
||
548 | } |
||
549 | |||
550 | /* |
||
551 | * Work around GCC bug causing crashes in Mozilla with SSE2 |
||
552 | * |
||
553 | * When using -msse, gcc generates movdqa instructions assuming that |
||
554 | * the stack is 16 byte aligned. Unfortunately some applications, such |
||
555 | * as Mozilla and Mono, end up aligning the stack to 4 bytes, which |
||
556 | * causes the movdqa instructions to fail. |
||
557 | * |
||
558 | * The __force_align_arg_pointer__ makes gcc generate a prologue that |
||
559 | * realigns the stack pointer to 16 bytes. |
||
560 | * |
||
561 | * On x86-64 this is not necessary because the standard ABI already |
||
562 | * calls for a 16 byte aligned stack. |
||
563 | * |
||
564 | * See https://bugs.freedesktop.org/show_bug.cgi?id=15693 |
||
565 | */ |
||
566 | #if defined (USE_SSE2) && defined(__GNUC__) && !defined(__x86_64__) && !defined(__amd64__) |
||
567 | __attribute__((__force_align_arg_pointer__)) |
||
568 | #endif |
||
569 | PIXMAN_EXPORT void |
||
570 | pixman_image_composite32 (pixman_op_t op, |
||
571 | pixman_image_t * src, |
||
572 | pixman_image_t * mask, |
||
573 | pixman_image_t * dest, |
||
574 | int32_t src_x, |
||
575 | int32_t src_y, |
||
576 | int32_t mask_x, |
||
577 | int32_t mask_y, |
||
578 | int32_t dest_x, |
||
579 | int32_t dest_y, |
||
580 | int32_t width, |
||
581 | int32_t height) |
||
582 | { |
||
583 | pixman_format_code_t src_format, mask_format, dest_format; |
||
584 | pixman_region32_t region; |
||
3931 | Serge | 585 | pixman_box32_t extents; |
1891 | serge | 586 | pixman_implementation_t *imp; |
587 | pixman_composite_func_t func; |
||
3931 | Serge | 588 | pixman_composite_info_t info; |
589 | const pixman_box32_t *pbox; |
||
590 | int n; |
||
1891 | serge | 591 | |
592 | _pixman_image_validate (src); |
||
593 | if (mask) |
||
594 | _pixman_image_validate (mask); |
||
595 | _pixman_image_validate (dest); |
||
596 | |||
597 | src_format = src->common.extended_format_code; |
||
3931 | Serge | 598 | info.src_flags = src->common.flags; |
1891 | serge | 599 | |
3931 | Serge | 600 | if (mask && !(mask->common.flags & FAST_PATH_IS_OPAQUE)) |
1891 | serge | 601 | { |
602 | mask_format = mask->common.extended_format_code; |
||
3931 | Serge | 603 | info.mask_flags = mask->common.flags; |
1891 | serge | 604 | } |
605 | else |
||
606 | { |
||
607 | mask_format = PIXMAN_null; |
||
3931 | Serge | 608 | info.mask_flags = FAST_PATH_IS_OPAQUE; |
1891 | serge | 609 | } |
610 | |||
611 | dest_format = dest->common.extended_format_code; |
||
3931 | Serge | 612 | info.dest_flags = dest->common.flags; |
1891 | serge | 613 | |
614 | /* Check for pixbufs */ |
||
615 | if ((mask_format == PIXMAN_a8r8g8b8 || mask_format == PIXMAN_a8b8g8r8) && |
||
616 | (src->type == BITS && src->bits.bits == mask->bits.bits) && |
||
617 | (src->common.repeat == mask->common.repeat) && |
||
3931 | Serge | 618 | (info.src_flags & info.mask_flags & FAST_PATH_ID_TRANSFORM) && |
1891 | serge | 619 | (src_x == mask_x && src_y == mask_y)) |
620 | { |
||
621 | if (src_format == PIXMAN_x8b8g8r8) |
||
622 | src_format = mask_format = PIXMAN_pixbuf; |
||
623 | else if (src_format == PIXMAN_x8r8g8b8) |
||
624 | src_format = mask_format = PIXMAN_rpixbuf; |
||
625 | } |
||
626 | |||
627 | pixman_region32_init (®ion); |
||
628 | |||
3931 | Serge | 629 | if (!_pixman_compute_composite_region32 ( |
1891 | serge | 630 | ®ion, src, mask, dest, |
631 | src_x, src_y, mask_x, mask_y, dest_x, dest_y, width, height)) |
||
632 | { |
||
633 | goto out; |
||
634 | } |
||
635 | |||
3931 | Serge | 636 | extents = *pixman_region32_extents (®ion); |
1891 | serge | 637 | |
3931 | Serge | 638 | extents.x1 -= dest_x - src_x; |
639 | extents.y1 -= dest_y - src_y; |
||
640 | extents.x2 -= dest_x - src_x; |
||
641 | extents.y2 -= dest_y - src_y; |
||
642 | |||
643 | if (!analyze_extent (src, &extents, &info.src_flags)) |
||
1891 | serge | 644 | goto out; |
645 | |||
3931 | Serge | 646 | extents.x1 -= src_x - mask_x; |
647 | extents.y1 -= src_y - mask_y; |
||
648 | extents.x2 -= src_x - mask_x; |
||
649 | extents.y2 -= src_y - mask_y; |
||
650 | |||
651 | if (!analyze_extent (mask, &extents, &info.mask_flags)) |
||
1891 | serge | 652 | goto out; |
653 | |||
3931 | Serge | 654 | /* If the clip is within the source samples, and the samples are |
655 | * opaque, then the source is effectively opaque. |
||
1891 | serge | 656 | */ |
3931 | Serge | 657 | #define NEAREST_OPAQUE (FAST_PATH_SAMPLES_OPAQUE | \ |
658 | FAST_PATH_NEAREST_FILTER | \ |
||
659 | FAST_PATH_SAMPLES_COVER_CLIP_NEAREST) |
||
660 | #define BILINEAR_OPAQUE (FAST_PATH_SAMPLES_OPAQUE | \ |
||
661 | FAST_PATH_BILINEAR_FILTER | \ |
||
662 | FAST_PATH_SAMPLES_COVER_CLIP_BILINEAR) |
||
1891 | serge | 663 | |
3931 | Serge | 664 | if ((info.src_flags & NEAREST_OPAQUE) == NEAREST_OPAQUE || |
665 | (info.src_flags & BILINEAR_OPAQUE) == BILINEAR_OPAQUE) |
||
666 | { |
||
667 | info.src_flags |= FAST_PATH_IS_OPAQUE; |
||
668 | } |
||
669 | |||
670 | if ((info.mask_flags & NEAREST_OPAQUE) == NEAREST_OPAQUE || |
||
671 | (info.mask_flags & BILINEAR_OPAQUE) == BILINEAR_OPAQUE) |
||
672 | { |
||
673 | info.mask_flags |= FAST_PATH_IS_OPAQUE; |
||
674 | } |
||
675 | |||
1891 | serge | 676 | /* |
677 | * Check if we can replace our operator by a simpler one |
||
678 | * if the src or dest are opaque. The output operator should be |
||
679 | * mathematically equivalent to the source. |
||
680 | */ |
||
3931 | Serge | 681 | info.op = optimize_operator (op, info.src_flags, info.mask_flags, info.dest_flags); |
1891 | serge | 682 | |
3931 | Serge | 683 | _pixman_implementation_lookup_composite ( |
684 | get_implementation (), info.op, |
||
685 | src_format, info.src_flags, |
||
686 | mask_format, info.mask_flags, |
||
687 | dest_format, info.dest_flags, |
||
688 | &imp, &func); |
||
689 | |||
690 | info.src_image = src; |
||
691 | info.mask_image = mask; |
||
692 | info.dest_image = dest; |
||
693 | |||
694 | pbox = pixman_region32_rectangles (®ion, &n); |
||
695 | |||
696 | while (n--) |
||
1891 | serge | 697 | { |
3931 | Serge | 698 | info.src_x = pbox->x1 + src_x - dest_x; |
699 | info.src_y = pbox->y1 + src_y - dest_y; |
||
700 | info.mask_x = pbox->x1 + mask_x - dest_x; |
||
701 | info.mask_y = pbox->y1 + mask_y - dest_y; |
||
702 | info.dest_x = pbox->x1; |
||
703 | info.dest_y = pbox->y1; |
||
704 | info.width = pbox->x2 - pbox->x1; |
||
705 | info.height = pbox->y2 - pbox->y1; |
||
1891 | serge | 706 | |
3931 | Serge | 707 | func (imp, &info); |
708 | |||
709 | pbox++; |
||
1891 | serge | 710 | } |
711 | |||
712 | out: |
||
713 | pixman_region32_fini (®ion); |
||
714 | } |
||
715 | |||
716 | PIXMAN_EXPORT void |
||
717 | pixman_image_composite (pixman_op_t op, |
||
718 | pixman_image_t * src, |
||
719 | pixman_image_t * mask, |
||
720 | pixman_image_t * dest, |
||
721 | int16_t src_x, |
||
722 | int16_t src_y, |
||
723 | int16_t mask_x, |
||
724 | int16_t mask_y, |
||
725 | int16_t dest_x, |
||
726 | int16_t dest_y, |
||
727 | uint16_t width, |
||
728 | uint16_t height) |
||
729 | { |
||
730 | pixman_image_composite32 (op, src, mask, dest, src_x, src_y, |
||
731 | mask_x, mask_y, dest_x, dest_y, width, height); |
||
732 | } |
||
733 | |||
734 | PIXMAN_EXPORT pixman_bool_t |
||
735 | pixman_blt (uint32_t *src_bits, |
||
736 | uint32_t *dst_bits, |
||
737 | int src_stride, |
||
738 | int dst_stride, |
||
739 | int src_bpp, |
||
740 | int dst_bpp, |
||
741 | int src_x, |
||
742 | int src_y, |
||
3931 | Serge | 743 | int dest_x, |
744 | int dest_y, |
||
1891 | serge | 745 | int width, |
746 | int height) |
||
747 | { |
||
748 | return _pixman_implementation_blt (get_implementation(), |
||
749 | src_bits, dst_bits, src_stride, dst_stride, |
||
750 | src_bpp, dst_bpp, |
||
751 | src_x, src_y, |
||
3931 | Serge | 752 | dest_x, dest_y, |
1891 | serge | 753 | width, height); |
754 | } |
||
755 | |||
756 | PIXMAN_EXPORT pixman_bool_t |
||
757 | pixman_fill (uint32_t *bits, |
||
758 | int stride, |
||
759 | int bpp, |
||
760 | int x, |
||
761 | int y, |
||
762 | int width, |
||
763 | int height, |
||
3931 | Serge | 764 | uint32_t filler) |
1891 | serge | 765 | { |
766 | return _pixman_implementation_fill ( |
||
3931 | Serge | 767 | get_implementation(), bits, stride, bpp, x, y, width, height, filler); |
1891 | serge | 768 | } |
769 | |||
770 | static uint32_t |
||
771 | color_to_uint32 (const pixman_color_t *color) |
||
772 | { |
||
773 | return |
||
774 | (color->alpha >> 8 << 24) | |
||
775 | (color->red >> 8 << 16) | |
||
776 | (color->green & 0xff00) | |
||
777 | (color->blue >> 8); |
||
778 | } |
||
779 | |||
780 | static pixman_bool_t |
||
3931 | Serge | 781 | color_to_pixel (const pixman_color_t *color, |
782 | uint32_t * pixel, |
||
783 | pixman_format_code_t format) |
||
1891 | serge | 784 | { |
785 | uint32_t c = color_to_uint32 (color); |
||
786 | |||
787 | if (!(format == PIXMAN_a8r8g8b8 || |
||
788 | format == PIXMAN_x8r8g8b8 || |
||
789 | format == PIXMAN_a8b8g8r8 || |
||
790 | format == PIXMAN_x8b8g8r8 || |
||
791 | format == PIXMAN_b8g8r8a8 || |
||
792 | format == PIXMAN_b8g8r8x8 || |
||
3931 | Serge | 793 | format == PIXMAN_r8g8b8a8 || |
794 | format == PIXMAN_r8g8b8x8 || |
||
1891 | serge | 795 | format == PIXMAN_r5g6b5 || |
796 | format == PIXMAN_b5g6r5 || |
||
3931 | Serge | 797 | format == PIXMAN_a8 || |
798 | format == PIXMAN_a1)) |
||
1891 | serge | 799 | { |
800 | return FALSE; |
||
801 | } |
||
802 | |||
803 | if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_ABGR) |
||
804 | { |
||
805 | c = ((c & 0xff000000) >> 0) | |
||
806 | ((c & 0x00ff0000) >> 16) | |
||
807 | ((c & 0x0000ff00) >> 0) | |
||
808 | ((c & 0x000000ff) << 16); |
||
809 | } |
||
810 | if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_BGRA) |
||
811 | { |
||
812 | c = ((c & 0xff000000) >> 24) | |
||
813 | ((c & 0x00ff0000) >> 8) | |
||
814 | ((c & 0x0000ff00) << 8) | |
||
815 | ((c & 0x000000ff) << 24); |
||
816 | } |
||
3931 | Serge | 817 | if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_RGBA) |
818 | c = ((c & 0xff000000) >> 24) | (c << 8); |
||
1891 | serge | 819 | |
3931 | Serge | 820 | if (format == PIXMAN_a1) |
821 | c = c >> 31; |
||
822 | else if (format == PIXMAN_a8) |
||
1891 | serge | 823 | c = c >> 24; |
824 | else if (format == PIXMAN_r5g6b5 || |
||
825 | format == PIXMAN_b5g6r5) |
||
3931 | Serge | 826 | c = convert_8888_to_0565 (c); |
1891 | serge | 827 | |
828 | #if 0 |
||
829 | printf ("color: %x %x %x %x\n", color->alpha, color->red, color->green, color->blue); |
||
830 | printf ("pixel: %x\n", c); |
||
831 | #endif |
||
832 | |||
833 | *pixel = c; |
||
834 | return TRUE; |
||
835 | } |
||
836 | |||
837 | PIXMAN_EXPORT pixman_bool_t |
||
838 | pixman_image_fill_rectangles (pixman_op_t op, |
||
839 | pixman_image_t * dest, |
||
3931 | Serge | 840 | const pixman_color_t * color, |
1891 | serge | 841 | int n_rects, |
842 | const pixman_rectangle16_t *rects) |
||
843 | { |
||
844 | pixman_box32_t stack_boxes[6]; |
||
845 | pixman_box32_t *boxes; |
||
846 | pixman_bool_t result; |
||
847 | int i; |
||
848 | |||
849 | if (n_rects > 6) |
||
850 | { |
||
851 | boxes = pixman_malloc_ab (sizeof (pixman_box32_t), n_rects); |
||
852 | if (boxes == NULL) |
||
853 | return FALSE; |
||
854 | } |
||
855 | else |
||
856 | { |
||
857 | boxes = stack_boxes; |
||
858 | } |
||
859 | |||
860 | for (i = 0; i < n_rects; ++i) |
||
861 | { |
||
862 | boxes[i].x1 = rects[i].x; |
||
863 | boxes[i].y1 = rects[i].y; |
||
864 | boxes[i].x2 = boxes[i].x1 + rects[i].width; |
||
865 | boxes[i].y2 = boxes[i].y1 + rects[i].height; |
||
866 | } |
||
867 | |||
868 | result = pixman_image_fill_boxes (op, dest, color, n_rects, boxes); |
||
869 | |||
870 | if (boxes != stack_boxes) |
||
871 | free (boxes); |
||
872 | |||
873 | return result; |
||
874 | } |
||
875 | |||
876 | PIXMAN_EXPORT pixman_bool_t |
||
877 | pixman_image_fill_boxes (pixman_op_t op, |
||
878 | pixman_image_t * dest, |
||
3931 | Serge | 879 | const pixman_color_t *color, |
1891 | serge | 880 | int n_boxes, |
881 | const pixman_box32_t *boxes) |
||
882 | { |
||
883 | pixman_image_t *solid; |
||
884 | pixman_color_t c; |
||
885 | int i; |
||
886 | |||
887 | _pixman_image_validate (dest); |
||
888 | |||
889 | if (color->alpha == 0xffff) |
||
890 | { |
||
891 | if (op == PIXMAN_OP_OVER) |
||
892 | op = PIXMAN_OP_SRC; |
||
893 | } |
||
894 | |||
895 | if (op == PIXMAN_OP_CLEAR) |
||
896 | { |
||
897 | c.red = 0; |
||
898 | c.green = 0; |
||
899 | c.blue = 0; |
||
900 | c.alpha = 0; |
||
901 | |||
902 | color = &c; |
||
903 | |||
904 | op = PIXMAN_OP_SRC; |
||
905 | } |
||
906 | |||
907 | if (op == PIXMAN_OP_SRC) |
||
908 | { |
||
909 | uint32_t pixel; |
||
910 | |||
911 | if (color_to_pixel (color, &pixel, dest->bits.format)) |
||
912 | { |
||
913 | pixman_region32_t fill_region; |
||
914 | int n_rects, j; |
||
915 | pixman_box32_t *rects; |
||
916 | |||
917 | if (!pixman_region32_init_rects (&fill_region, boxes, n_boxes)) |
||
918 | return FALSE; |
||
919 | |||
920 | if (dest->common.have_clip_region) |
||
921 | { |
||
922 | if (!pixman_region32_intersect (&fill_region, |
||
923 | &fill_region, |
||
924 | &dest->common.clip_region)) |
||
925 | return FALSE; |
||
926 | } |
||
927 | |||
928 | rects = pixman_region32_rectangles (&fill_region, &n_rects); |
||
929 | for (j = 0; j < n_rects; ++j) |
||
930 | { |
||
931 | const pixman_box32_t *rect = &(rects[j]); |
||
932 | pixman_fill (dest->bits.bits, dest->bits.rowstride, PIXMAN_FORMAT_BPP (dest->bits.format), |
||
933 | rect->x1, rect->y1, rect->x2 - rect->x1, rect->y2 - rect->y1, |
||
934 | pixel); |
||
935 | } |
||
936 | |||
937 | pixman_region32_fini (&fill_region); |
||
938 | return TRUE; |
||
939 | } |
||
940 | } |
||
941 | |||
942 | solid = pixman_image_create_solid_fill (color); |
||
943 | if (!solid) |
||
944 | return FALSE; |
||
945 | |||
946 | for (i = 0; i < n_boxes; ++i) |
||
947 | { |
||
948 | const pixman_box32_t *box = &(boxes[i]); |
||
949 | |||
950 | pixman_image_composite32 (op, solid, NULL, dest, |
||
951 | 0, 0, 0, 0, |
||
952 | box->x1, box->y1, |
||
953 | box->x2 - box->x1, box->y2 - box->y1); |
||
954 | } |
||
955 | |||
956 | pixman_image_unref (solid); |
||
957 | |||
958 | return TRUE; |
||
959 | } |
||
960 | |||
961 | /** |
||
962 | * pixman_version: |
||
963 | * |
||
964 | * Returns the version of the pixman library encoded in a single |
||
965 | * integer as per %PIXMAN_VERSION_ENCODE. The encoding ensures that |
||
966 | * later versions compare greater than earlier versions. |
||
967 | * |
||
968 | * A run-time comparison to check that pixman's version is greater than |
||
969 | * or equal to version X.Y.Z could be performed as follows: |
||
970 | * |
||
971 | * |
||
972 | * if (pixman_version() >= PIXMAN_VERSION_ENCODE(X,Y,Z)) {...} |
||
973 | * |
||
974 | * |
||
975 | * See also pixman_version_string() as well as the compile-time |
||
976 | * equivalents %PIXMAN_VERSION and %PIXMAN_VERSION_STRING. |
||
977 | * |
||
978 | * Return value: the encoded version. |
||
979 | **/ |
||
980 | PIXMAN_EXPORT int |
||
981 | pixman_version (void) |
||
982 | { |
||
983 | return PIXMAN_VERSION; |
||
984 | } |
||
985 | |||
986 | /** |
||
987 | * pixman_version_string: |
||
988 | * |
||
989 | * Returns the version of the pixman library as a human-readable string |
||
990 | * of the form "X.Y.Z". |
||
991 | * |
||
992 | * See also pixman_version() as well as the compile-time equivalents |
||
993 | * %PIXMAN_VERSION_STRING and %PIXMAN_VERSION. |
||
994 | * |
||
995 | * Return value: a string containing the version. |
||
996 | **/ |
||
997 | PIXMAN_EXPORT const char* |
||
998 | pixman_version_string (void) |
||
999 | { |
||
1000 | return PIXMAN_VERSION_STRING; |
||
1001 | } |
||
1002 | |||
1003 | /** |
||
1004 | * pixman_format_supported_source: |
||
1005 | * @format: A pixman_format_code_t format |
||
1006 | * |
||
1007 | * Return value: whether the provided format code is a supported |
||
1008 | * format for a pixman surface used as a source in |
||
1009 | * rendering. |
||
1010 | * |
||
1011 | * Currently, all pixman_format_code_t values are supported. |
||
1012 | **/ |
||
1013 | PIXMAN_EXPORT pixman_bool_t |
||
1014 | pixman_format_supported_source (pixman_format_code_t format) |
||
1015 | { |
||
1016 | switch (format) |
||
1017 | { |
||
1018 | /* 32 bpp formats */ |
||
1019 | case PIXMAN_a2b10g10r10: |
||
1020 | case PIXMAN_x2b10g10r10: |
||
1021 | case PIXMAN_a2r10g10b10: |
||
1022 | case PIXMAN_x2r10g10b10: |
||
1023 | case PIXMAN_a8r8g8b8: |
||
3931 | Serge | 1024 | case PIXMAN_a8r8g8b8_sRGB: |
1891 | serge | 1025 | case PIXMAN_x8r8g8b8: |
1026 | case PIXMAN_a8b8g8r8: |
||
1027 | case PIXMAN_x8b8g8r8: |
||
1028 | case PIXMAN_b8g8r8a8: |
||
1029 | case PIXMAN_b8g8r8x8: |
||
3931 | Serge | 1030 | case PIXMAN_r8g8b8a8: |
1031 | case PIXMAN_r8g8b8x8: |
||
1891 | serge | 1032 | case PIXMAN_r8g8b8: |
1033 | case PIXMAN_b8g8r8: |
||
1034 | case PIXMAN_r5g6b5: |
||
1035 | case PIXMAN_b5g6r5: |
||
1036 | case PIXMAN_x14r6g6b6: |
||
1037 | /* 16 bpp formats */ |
||
1038 | case PIXMAN_a1r5g5b5: |
||
1039 | case PIXMAN_x1r5g5b5: |
||
1040 | case PIXMAN_a1b5g5r5: |
||
1041 | case PIXMAN_x1b5g5r5: |
||
1042 | case PIXMAN_a4r4g4b4: |
||
1043 | case PIXMAN_x4r4g4b4: |
||
1044 | case PIXMAN_a4b4g4r4: |
||
1045 | case PIXMAN_x4b4g4r4: |
||
1046 | /* 8bpp formats */ |
||
1047 | case PIXMAN_a8: |
||
1048 | case PIXMAN_r3g3b2: |
||
1049 | case PIXMAN_b2g3r3: |
||
1050 | case PIXMAN_a2r2g2b2: |
||
1051 | case PIXMAN_a2b2g2r2: |
||
1052 | case PIXMAN_c8: |
||
1053 | case PIXMAN_g8: |
||
1054 | case PIXMAN_x4a4: |
||
1055 | /* Collides with PIXMAN_c8 |
||
1056 | case PIXMAN_x4c4: |
||
1057 | */ |
||
1058 | /* Collides with PIXMAN_g8 |
||
1059 | case PIXMAN_x4g4: |
||
1060 | */ |
||
1061 | /* 4bpp formats */ |
||
1062 | case PIXMAN_a4: |
||
1063 | case PIXMAN_r1g2b1: |
||
1064 | case PIXMAN_b1g2r1: |
||
1065 | case PIXMAN_a1r1g1b1: |
||
1066 | case PIXMAN_a1b1g1r1: |
||
1067 | case PIXMAN_c4: |
||
1068 | case PIXMAN_g4: |
||
1069 | /* 1bpp formats */ |
||
1070 | case PIXMAN_a1: |
||
1071 | case PIXMAN_g1: |
||
1072 | /* YUV formats */ |
||
1073 | case PIXMAN_yuy2: |
||
1074 | case PIXMAN_yv12: |
||
1075 | return TRUE; |
||
1076 | |||
1077 | default: |
||
1078 | return FALSE; |
||
1079 | } |
||
1080 | } |
||
1081 | |||
1082 | /** |
||
1083 | * pixman_format_supported_destination: |
||
1084 | * @format: A pixman_format_code_t format |
||
1085 | * |
||
1086 | * Return value: whether the provided format code is a supported |
||
1087 | * format for a pixman surface used as a destination in |
||
1088 | * rendering. |
||
1089 | * |
||
1090 | * Currently, all pixman_format_code_t values are supported |
||
1091 | * except for the YUV formats. |
||
1092 | **/ |
||
1093 | PIXMAN_EXPORT pixman_bool_t |
||
1094 | pixman_format_supported_destination (pixman_format_code_t format) |
||
1095 | { |
||
1096 | /* YUV formats cannot be written to at the moment */ |
||
1097 | if (format == PIXMAN_yuy2 || format == PIXMAN_yv12) |
||
1098 | return FALSE; |
||
1099 | |||
1100 | return pixman_format_supported_source (format); |
||
1101 | } |
||
1102 | |||
1103 | PIXMAN_EXPORT pixman_bool_t |
||
1104 | pixman_compute_composite_region (pixman_region16_t * region, |
||
1105 | pixman_image_t * src_image, |
||
1106 | pixman_image_t * mask_image, |
||
3931 | Serge | 1107 | pixman_image_t * dest_image, |
1891 | serge | 1108 | int16_t src_x, |
1109 | int16_t src_y, |
||
1110 | int16_t mask_x, |
||
1111 | int16_t mask_y, |
||
1112 | int16_t dest_x, |
||
1113 | int16_t dest_y, |
||
1114 | uint16_t width, |
||
1115 | uint16_t height) |
||
1116 | { |
||
1117 | pixman_region32_t r32; |
||
1118 | pixman_bool_t retval; |
||
1119 | |||
1120 | pixman_region32_init (&r32); |
||
1121 | |||
3931 | Serge | 1122 | retval = _pixman_compute_composite_region32 ( |
1123 | &r32, src_image, mask_image, dest_image, |
||
1891 | serge | 1124 | src_x, src_y, mask_x, mask_y, dest_x, dest_y, |
1125 | width, height); |
||
1126 | |||
1127 | if (retval) |
||
1128 | { |
||
1129 | if (!pixman_region16_copy_from_region32 (region, &r32)) |
||
1130 | retval = FALSE; |
||
1131 | } |
||
1132 | |||
1133 | pixman_region32_fini (&r32); |
||
1134 | return retval; |
||
1135 | }>>>><>><>><>><>><>><>>>>>=>=>=>>=>>>>>>><> |