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|---|
| /* |
| * Copyright © 2009 Red Hat, Inc. |
| * Copyright © 2000 SuSE, Inc. |
| * Copyright © 2007 Red Hat, Inc. |
| * Copyright © 2000 Keith Packard, member of The XFree86 Project, Inc. |
| * 2005 Lars Knoll & Zack Rusin, Trolltech |
| * 2008 Aaron Plattner, NVIDIA Corporation |
| * |
| * Permission to use, copy, modify, distribute, and sell this software and its |
| * documentation for any purpose is hereby granted without fee, provided that |
| * the above copyright notice appear in all copies and that both that |
| * copyright notice and this permission notice appear in supporting |
| * documentation, and that the name of Red Hat not be used in advertising or |
| * publicity pertaining to distribution of the software without specific, |
| * written prior permission. Red Hat makes no representations about the |
| * suitability of this software for any purpose. It is provided "as is" |
| * without express or implied warranty. |
| * |
| * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS |
| * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN |
| * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING |
| * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS |
| * SOFTWARE. |
| */ |
| #ifdef HAVE_CONFIG_H |
| #include <config.h> |
| #endif |
| #include <stdlib.h> |
| #include <string.h> |
| #include <math.h> |
| #include <limits.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include "pixman-private.h" |
| |
| static pixman_bool_t |
| general_src_iter_init (pixman_implementation_t *imp, pixman_iter_t *iter) |
| { |
| pixman_image_t *image = iter->image; |
| |
| if (image->type == LINEAR) |
| _pixman_linear_gradient_iter_init (image, iter); |
| else if (image->type == RADIAL) |
| _pixman_radial_gradient_iter_init (image, iter); |
| else if (image->type == CONICAL) |
| _pixman_conical_gradient_iter_init (image, iter); |
| else if (image->type == BITS) |
| _pixman_bits_image_src_iter_init (image, iter); |
| else if (image->type == SOLID) |
| _pixman_log_error (FUNC, "Solid image not handled by noop"); |
| else |
| _pixman_log_error (FUNC, "Pixman bug: unknown image type\n"); |
| |
| return TRUE; |
| } |
| |
| static pixman_bool_t |
| general_dest_iter_init (pixman_implementation_t *imp, pixman_iter_t *iter) |
| { |
| if (iter->image->type == BITS) |
| { |
| _pixman_bits_image_dest_iter_init (iter->image, iter); |
| |
| return TRUE; |
| } |
| else |
| { |
| _pixman_log_error (FUNC, "Trying to write to a non-writable image"); |
| |
| return FALSE; |
| } |
| } |
| |
| typedef struct op_info_t op_info_t; |
| struct op_info_t |
| { |
| uint8_t src, dst; |
| }; |
| |
| #define ITER_IGNORE_BOTH \ |
| (ITER_IGNORE_ALPHA | ITER_IGNORE_RGB | ITER_LOCALIZED_ALPHA) |
| |
| static const op_info_t op_flags[PIXMAN_N_OPERATORS] = |
| { |
| /* Src Dst */ |
| { ITER_IGNORE_BOTH, ITER_IGNORE_BOTH }, /* CLEAR */ |
| { ITER_LOCALIZED_ALPHA, ITER_IGNORE_BOTH }, /* SRC */ |
| { ITER_IGNORE_BOTH, ITER_LOCALIZED_ALPHA }, /* DST */ |
| { 0, ITER_LOCALIZED_ALPHA }, /* OVER */ |
| { ITER_LOCALIZED_ALPHA, 0 }, /* OVER_REVERSE */ |
| { ITER_LOCALIZED_ALPHA, ITER_IGNORE_RGB }, /* IN */ |
| { ITER_IGNORE_RGB, ITER_LOCALIZED_ALPHA }, /* IN_REVERSE */ |
| { ITER_LOCALIZED_ALPHA, ITER_IGNORE_RGB }, /* OUT */ |
| { ITER_IGNORE_RGB, ITER_LOCALIZED_ALPHA }, /* OUT_REVERSE */ |
| { 0, 0 }, /* ATOP */ |
| { 0, 0 }, /* ATOP_REVERSE */ |
| { 0, 0 }, /* XOR */ |
| { ITER_LOCALIZED_ALPHA, ITER_LOCALIZED_ALPHA }, /* ADD */ |
| { 0, 0 }, /* SATURATE */ |
| }; |
| |
| #define SCANLINE_BUFFER_LENGTH 8192 |
| |
| static void |
| general_composite_rect (pixman_implementation_t *imp, |
| pixman_composite_info_t *info) |
| { |
| PIXMAN_COMPOSITE_ARGS (info); |
| uint64_t stack_scanline_buffer[(SCANLINE_BUFFER_LENGTH * 3 + 7) / 8]; |
| uint8_t *scanline_buffer = (uint8_t *) stack_scanline_buffer; |
| uint8_t *src_buffer, *mask_buffer, *dest_buffer; |
| pixman_iter_t src_iter, mask_iter, dest_iter; |
| pixman_combine_32_func_t compose; |
| pixman_bool_t component_alpha; |
| iter_flags_t narrow, src_iter_flags; |
| int Bpp; |
| int i; |
| |
| if ((src_image->common.flags & FAST_PATH_NARROW_FORMAT) && |
| (!mask_image || mask_image->common.flags & FAST_PATH_NARROW_FORMAT) && |
| (dest_image->common.flags & FAST_PATH_NARROW_FORMAT)) |
| { |
| narrow = ITER_NARROW; |
| Bpp = 4; |
| } |
| else |
| { |
| narrow = 0; |
| Bpp = 16; |
| } |
| |
| if (width * Bpp > SCANLINE_BUFFER_LENGTH) |
| { |
| scanline_buffer = pixman_malloc_abc (width, 3, Bpp); |
| |
| if (!scanline_buffer) |
| return; |
| } |
| |
| src_buffer = scanline_buffer; |
| mask_buffer = src_buffer + width * Bpp; |
| dest_buffer = mask_buffer + width * Bpp; |
| |
| if (!narrow) |
| { |
| /* To make sure there aren't any NANs in the buffers */ |
| memset (src_buffer, 0, width * Bpp); |
| memset (mask_buffer, 0, width * Bpp); |
| memset (dest_buffer, 0, width * Bpp); |
| } |
| |
| /* src iter */ |
| src_iter_flags = narrow | op_flags[op].src; |
| |
| _pixman_implementation_src_iter_init (imp->toplevel, &src_iter, src_image, |
| src_x, src_y, width, height, |
| src_buffer, src_iter_flags, info->src_flags); |
| |
| /* mask iter */ |
| if ((src_iter_flags & (ITER_IGNORE_ALPHA | ITER_IGNORE_RGB)) == |
| (ITER_IGNORE_ALPHA | ITER_IGNORE_RGB)) |
| { |
| /* If it doesn't matter what the source is, then it doesn't matter |
| * what the mask is |
| */ |
| mask_image = NULL; |
| } |
| |
| component_alpha = |
| mask_image && |
| mask_image->common.type == BITS && |
| mask_image->common.component_alpha && |
| PIXMAN_FORMAT_RGB (mask_image->bits.format); |
| |
| _pixman_implementation_src_iter_init ( |
| imp->toplevel, &mask_iter, mask_image, mask_x, mask_y, width, height, |
| mask_buffer, narrow | (component_alpha? 0 : ITER_IGNORE_RGB), info->mask_flags); |
| |
| /* dest iter */ |
| _pixman_implementation_dest_iter_init ( |
| imp->toplevel, &dest_iter, dest_image, dest_x, dest_y, width, height, |
| dest_buffer, narrow | op_flags[op].dst, info->dest_flags); |
| |
| compose = _pixman_implementation_lookup_combiner ( |
| imp->toplevel, op, component_alpha, narrow); |
| |
| for (i = 0; i < height; ++i) |
| { |
| uint32_t *s, *m, *d; |
| |
| m = mask_iter.get_scanline (&mask_iter, NULL); |
| s = src_iter.get_scanline (&src_iter, m); |
| d = dest_iter.get_scanline (&dest_iter, NULL); |
| |
| compose (imp->toplevel, op, d, s, m, width); |
| |
| dest_iter.write_back (&dest_iter); |
| } |
| |
| if (scanline_buffer != (uint8_t *) stack_scanline_buffer) |
| free (scanline_buffer); |
| } |
| |
| static const pixman_fast_path_t general_fast_path[] = |
| { |
| { PIXMAN_OP_any, PIXMAN_any, 0, PIXMAN_any, 0, PIXMAN_any, 0, general_composite_rect }, |
| { PIXMAN_OP_NONE } |
| }; |
| |
| pixman_implementation_t * |
| _pixman_implementation_create_general (void) |
| { |
| pixman_implementation_t *imp = _pixman_implementation_create (NULL, general_fast_path); |
| |
| _pixman_setup_combiner_functions_32 (imp); |
| _pixman_setup_combiner_functions_float (imp); |
| |
| imp->src_iter_init = general_src_iter_init; |
| imp->dest_iter_init = general_dest_iter_init; |
| |
| return imp; |
| } |
| |