316 lines
9.0 KiB
C
316 lines
9.0 KiB
C
/*
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* Copyright © 2009 Red Hat, Inc.
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* Copyright © 2000 SuSE, Inc.
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* Copyright © 2007 Red Hat, Inc.
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* Copyright © 2000 Keith Packard, member of The XFree86 Project, Inc.
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* 2005 Lars Knoll & Zack Rusin, Trolltech
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* 2008 Aaron Plattner, NVIDIA Corporation
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Red Hat not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. Red Hat makes no representations about the
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* suitability of this software for any purpose. It is provided "as is"
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* without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
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* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "pixman-private.h"
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#include "pixman-combine32.h"
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#include "pixman-private.h"
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#define SCANLINE_BUFFER_LENGTH 8192
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static void
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general_composite_rect (pixman_implementation_t *imp,
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pixman_op_t op,
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pixman_image_t * src,
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pixman_image_t * mask,
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pixman_image_t * dest,
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int32_t src_x,
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int32_t src_y,
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int32_t mask_x,
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int32_t mask_y,
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int32_t dest_x,
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int32_t dest_y,
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int32_t width,
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int32_t height)
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{
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uint64_t stack_scanline_buffer[(SCANLINE_BUFFER_LENGTH * 3 + 7) / 8];
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uint8_t *scanline_buffer = (uint8_t *) stack_scanline_buffer;
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uint8_t *src_buffer, *mask_buffer, *dest_buffer;
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fetch_scanline_t fetch_src = NULL, fetch_mask = NULL, fetch_dest = NULL;
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pixman_combine_32_func_t compose;
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store_scanline_t store;
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source_image_class_t src_class, mask_class;
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pixman_bool_t component_alpha;
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uint32_t *bits;
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int32_t stride;
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int narrow, Bpp;
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int i;
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narrow =
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(src->common.flags & FAST_PATH_NARROW_FORMAT) &&
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(!mask || mask->common.flags & FAST_PATH_NARROW_FORMAT) &&
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(dest->common.flags & FAST_PATH_NARROW_FORMAT);
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Bpp = narrow ? 4 : 8;
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if (width * Bpp > SCANLINE_BUFFER_LENGTH)
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{
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scanline_buffer = pixman_malloc_abc (width, 3, Bpp);
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if (!scanline_buffer)
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return;
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}
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src_buffer = scanline_buffer;
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mask_buffer = src_buffer + width * Bpp;
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dest_buffer = mask_buffer + width * Bpp;
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src_class = _pixman_image_classify (src,
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src_x, src_y,
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width, height);
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mask_class = SOURCE_IMAGE_CLASS_UNKNOWN;
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if (mask)
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{
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mask_class = _pixman_image_classify (mask,
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src_x, src_y,
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width, height);
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}
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if (op == PIXMAN_OP_CLEAR)
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fetch_src = NULL;
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else if (narrow)
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fetch_src = _pixman_image_get_scanline_32;
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else
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fetch_src = _pixman_image_get_scanline_64;
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if (!mask || op == PIXMAN_OP_CLEAR)
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fetch_mask = NULL;
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else if (narrow)
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fetch_mask = _pixman_image_get_scanline_32;
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else
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fetch_mask = _pixman_image_get_scanline_64;
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if (op == PIXMAN_OP_CLEAR || op == PIXMAN_OP_SRC)
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fetch_dest = NULL;
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else if (narrow)
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fetch_dest = _pixman_image_get_scanline_32;
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else
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fetch_dest = _pixman_image_get_scanline_64;
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if (narrow)
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store = _pixman_image_store_scanline_32;
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else
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store = _pixman_image_store_scanline_64;
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/* Skip the store step and composite directly into the
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* destination if the output format of the compose func matches
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* the destination format.
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*
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* If the destination format is a8r8g8b8 then we can always do
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* this. If it is x8r8g8b8, then we can only do it if the
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* operator doesn't make use of destination alpha.
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*/
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if ((dest->bits.format == PIXMAN_a8r8g8b8) ||
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(dest->bits.format == PIXMAN_x8r8g8b8 &&
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(op == PIXMAN_OP_OVER ||
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op == PIXMAN_OP_ADD ||
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op == PIXMAN_OP_SRC ||
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op == PIXMAN_OP_CLEAR ||
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op == PIXMAN_OP_IN_REVERSE ||
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op == PIXMAN_OP_OUT_REVERSE ||
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op == PIXMAN_OP_DST)))
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{
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if (narrow &&
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!dest->common.alpha_map &&
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!dest->bits.write_func)
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{
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store = NULL;
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}
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}
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if (!store)
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{
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bits = dest->bits.bits;
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stride = dest->bits.rowstride;
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}
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else
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{
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bits = NULL;
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stride = 0;
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}
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component_alpha =
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fetch_src &&
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fetch_mask &&
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mask &&
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mask->common.type == BITS &&
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mask->common.component_alpha &&
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PIXMAN_FORMAT_RGB (mask->bits.format);
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if (narrow)
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{
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if (component_alpha)
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compose = _pixman_implementation_combine_32_ca;
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else
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compose = _pixman_implementation_combine_32;
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}
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else
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{
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if (component_alpha)
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compose = (pixman_combine_32_func_t)_pixman_implementation_combine_64_ca;
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else
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compose = (pixman_combine_32_func_t)_pixman_implementation_combine_64;
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}
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if (!compose)
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return;
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if (!fetch_mask)
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mask_buffer = NULL;
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for (i = 0; i < height; ++i)
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{
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/* fill first half of scanline with source */
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if (fetch_src)
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{
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if (fetch_mask)
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{
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/* fetch mask before source so that fetching of
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source can be optimized */
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fetch_mask (mask, mask_x, mask_y + i,
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width, (void *)mask_buffer, 0);
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if (mask_class == SOURCE_IMAGE_CLASS_HORIZONTAL)
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fetch_mask = NULL;
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}
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if (src_class == SOURCE_IMAGE_CLASS_HORIZONTAL)
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{
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fetch_src (src, src_x, src_y + i,
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width, (void *)src_buffer, 0);
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fetch_src = NULL;
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}
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else
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{
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fetch_src (src, src_x, src_y + i,
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width, (void *)src_buffer, (void *)mask_buffer);
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}
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}
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else if (fetch_mask)
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{
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fetch_mask (mask, mask_x, mask_y + i,
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width, (void *)mask_buffer, 0);
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}
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if (store)
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{
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/* fill dest into second half of scanline */
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if (fetch_dest)
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{
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fetch_dest (dest, dest_x, dest_y + i,
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width, (void *)dest_buffer, 0);
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}
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/* blend */
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compose (imp->toplevel, op,
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(void *)dest_buffer,
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(void *)src_buffer,
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(void *)mask_buffer,
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width);
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/* write back */
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store (&(dest->bits), dest_x, dest_y + i, width,
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(void *)dest_buffer);
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}
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else
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{
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/* blend */
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compose (imp->toplevel, op,
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bits + (dest_y + i) * stride + dest_x,
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(void *)src_buffer, (void *)mask_buffer, width);
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}
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}
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if (scanline_buffer != (uint8_t *) stack_scanline_buffer)
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free (scanline_buffer);
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}
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static const pixman_fast_path_t general_fast_path[] =
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{
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{ PIXMAN_OP_any, PIXMAN_any, 0, PIXMAN_any, 0, PIXMAN_any, 0, general_composite_rect },
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{ PIXMAN_OP_NONE }
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};
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static pixman_bool_t
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general_blt (pixman_implementation_t *imp,
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uint32_t * src_bits,
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uint32_t * dst_bits,
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int src_stride,
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int dst_stride,
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int src_bpp,
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int dst_bpp,
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int src_x,
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int src_y,
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int dst_x,
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int dst_y,
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int width,
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int height)
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{
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/* We can't blit unless we have sse2 or mmx */
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return FALSE;
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}
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static pixman_bool_t
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general_fill (pixman_implementation_t *imp,
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uint32_t * bits,
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int stride,
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int bpp,
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int x,
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int y,
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int width,
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int height,
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uint32_t xor)
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{
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return FALSE;
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}
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pixman_implementation_t *
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_pixman_implementation_create_general (void)
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{
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pixman_implementation_t *imp = _pixman_implementation_create (NULL, general_fast_path);
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_pixman_setup_combiner_functions_32 (imp);
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_pixman_setup_combiner_functions_64 (imp);
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imp->blt = general_blt;
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imp->fill = general_fill;
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return imp;
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}
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