2 * Copyright © 2009 Red Hat, Inc.
3 * Copyright © 2000 SuSE, Inc.
4 * Copyright © 2007 Red Hat, Inc.
5 * Copyright © 2000 Keith Packard, member of The XFree86 Project, Inc.
6 * 2005 Lars Knoll & Zack Rusin, Trolltech
7 * 2008 Aaron Plattner, NVIDIA Corporation
9 * Permission to use, copy, modify, distribute, and sell this software and its
10 * documentation for any purpose is hereby granted without fee, provided that
11 * the above copyright notice appear in all copies and that both that
12 * copyright notice and this permission notice appear in supporting
13 * documentation, and that the name of Red Hat not be used in advertising or
14 * publicity pertaining to distribution of the software without specific,
15 * written prior permission. Red Hat makes no representations about the
16 * suitability of this software for any purpose. It is provided "as is"
17 * without express or implied warranty.
19 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
20 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
21 * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
22 * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
23 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
24 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
25 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
36 #include "pixman-private.h"
37 #include "pixman-combine32.h"
38 #include "pixman-private.h"
40 #define SCANLINE_BUFFER_LENGTH 8192
43 general_composite_rect (pixman_implementation_t *imp,
46 pixman_image_t * mask,
47 pixman_image_t * dest,
57 uint8_t stack_scanline_buffer[SCANLINE_BUFFER_LENGTH * 3];
58 const pixman_format_code_t src_format =
59 src->type == BITS ? src->bits.format : 0;
60 const pixman_format_code_t mask_format =
61 mask && mask->type == BITS ? mask->bits.format : 0;
62 const pixman_format_code_t dest_format =
63 dest->type == BITS ? dest->bits.format : 0;
64 const int src_wide = PIXMAN_FORMAT_IS_WIDE (src_format);
65 const int mask_wide = mask && PIXMAN_FORMAT_IS_WIDE (mask_format);
66 const int dest_wide = PIXMAN_FORMAT_IS_WIDE (dest_format);
67 const int wide = src_wide || mask_wide || dest_wide;
68 const int Bpp = wide ? 8 : 4;
69 uint8_t *scanline_buffer = stack_scanline_buffer;
70 uint8_t *src_buffer, *mask_buffer, *dest_buffer;
71 fetch_scanline_t fetch_src = NULL, fetch_mask = NULL, fetch_dest = NULL;
72 pixman_combine_32_func_t compose;
73 store_scanline_t store;
74 source_pict_class_t src_class, mask_class;
75 pixman_bool_t component_alpha;
80 if (width * Bpp > SCANLINE_BUFFER_LENGTH)
82 scanline_buffer = pixman_malloc_abc (width, 3, Bpp);
88 src_buffer = scanline_buffer;
89 mask_buffer = src_buffer + width * Bpp;
90 dest_buffer = mask_buffer + width * Bpp;
92 src_class = _pixman_image_classify (src,
96 mask_class = SOURCE_IMAGE_CLASS_UNKNOWN;
100 mask_class = _pixman_image_classify (mask,
105 if (op == PIXMAN_OP_CLEAR)
108 fetch_src = _pixman_image_get_scanline_64;
110 fetch_src = _pixman_image_get_scanline_32;
112 if (!mask || op == PIXMAN_OP_CLEAR)
115 fetch_mask = _pixman_image_get_scanline_64;
117 fetch_mask = _pixman_image_get_scanline_32;
119 if (op == PIXMAN_OP_CLEAR || op == PIXMAN_OP_SRC)
122 fetch_dest = _pixman_image_get_scanline_64;
124 fetch_dest = _pixman_image_get_scanline_32;
127 store = _pixman_image_store_scanline_64;
129 store = _pixman_image_store_scanline_32;
131 /* Skip the store step and composite directly into the
132 * destination if the output format of the compose func matches
133 * the destination format.
136 !dest->common.alpha_map &&
137 !dest->common.write_func &&
138 (op == PIXMAN_OP_ADD || op == PIXMAN_OP_OVER) &&
139 (dest->bits.format == PIXMAN_a8r8g8b8 ||
140 dest->bits.format == PIXMAN_x8r8g8b8))
147 bits = dest->bits.bits;
148 stride = dest->bits.rowstride;
160 mask->common.type == BITS &&
161 mask->common.component_alpha &&
162 PIXMAN_FORMAT_RGB (mask->bits.format);
167 compose = (pixman_combine_32_func_t)_pixman_implementation_combine_64_ca;
169 compose = (pixman_combine_32_func_t)_pixman_implementation_combine_64;
174 compose = _pixman_implementation_combine_32_ca;
176 compose = _pixman_implementation_combine_32;
185 for (i = 0; i < height; ++i)
187 /* fill first half of scanline with source */
192 /* fetch mask before source so that fetching of
193 source can be optimized */
194 fetch_mask (mask, mask_x, mask_y + i,
195 width, (void *)mask_buffer, 0, 0);
197 if (mask_class == SOURCE_IMAGE_CLASS_HORIZONTAL)
201 if (src_class == SOURCE_IMAGE_CLASS_HORIZONTAL)
203 fetch_src (src, src_x, src_y + i,
204 width, (void *)src_buffer, 0, 0);
209 fetch_src (src, src_x, src_y + i,
210 width, (void *)src_buffer, (void *)mask_buffer,
216 fetch_mask (mask, mask_x, mask_y + i,
217 width, (void *)mask_buffer, 0, 0);
222 /* fill dest into second half of scanline */
225 fetch_dest (dest, dest_x, dest_y + i,
226 width, (void *)dest_buffer, 0, 0);
230 compose (imp->toplevel, op,
237 store (&(dest->bits), dest_x, dest_y + i, width,
238 (void *)dest_buffer);
243 compose (imp->toplevel, op,
244 bits + (dest_y + i) * stride + dest_x,
245 (void *)src_buffer, (void *)mask_buffer, width);
249 if (scanline_buffer != stack_scanline_buffer)
250 free (scanline_buffer);
254 general_composite (pixman_implementation_t * imp,
256 pixman_image_t * src,
257 pixman_image_t * mask,
258 pixman_image_t * dest,
268 _pixman_walk_composite_region (imp, op, src, mask, dest, src_x, src_y,
269 mask_x, mask_y, dest_x, dest_y,
271 general_composite_rect);
275 general_blt (pixman_implementation_t *imp,
289 /* We can't blit unless we have sse2 or mmx */
295 general_fill (pixman_implementation_t *imp,
308 pixman_implementation_t *
309 _pixman_implementation_create_general (void)
311 pixman_implementation_t *imp = _pixman_implementation_create (NULL);
313 _pixman_setup_combiner_functions_32 (imp);
314 _pixman_setup_combiner_functions_64 (imp);
316 imp->composite = general_composite;
317 imp->blt = general_blt;
318 imp->fill = general_fill;