ba6dd8aa49
This commit was borrowed from uxa driver contributed by Eric.
commit number is e0066e77e026b0dd0daa0c3765473c7d63aa6753. commit log paste as
below:
We were clipping each span against the bounds of the clip, throwing
out the span early if it was all clipped, and then walked the clip box
clipping against each of the cliprects. We would expect spans to
typically be clipped against one box, and not thrown out, so we were
not saving any work there. For multiple cliprects, we were adding
work. Only for many spans clipped entirely out of a complicated clip
region would it have saved work, and it clearly didn't save bugs as
evidenced by the many fix attempts here.
Signed-off-by: Zhigang Gong <zhigang.gong@linux.intel.com>
95 lines
3.0 KiB
C
95 lines
3.0 KiB
C
/*
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* Copyright © 1998 Keith Packard
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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 Keith Packard not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Keith Packard makes no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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/** @file glamor_fillspans.c
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*
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* FillSpans implementation, taken from fb_fillsp.c
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*/
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#include "glamor_priv.h"
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void
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glamor_fill_spans(DrawablePtr drawable,
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GCPtr gc,
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int n,
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DDXPointPtr points,
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int *widths,
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int sorted)
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{
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DDXPointPtr ppt;
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int nbox;
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BoxPtr pbox;
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int x1, x2, y;
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int off_x, off_y;
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RegionPtr pClip = fbGetCompositeClip(gc);
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PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable);
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if (gc->fillStyle != FillSolid && gc->fillStyle != FillTiled)
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goto fail;
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glamor_get_drawable_deltas(drawable, pixmap, &off_x, &off_y);
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ppt = points;
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while (n--) {
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x1 = ppt->x;
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y = ppt->y;
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x2 = x1 + (int)*widths;
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ppt++;
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widths++;
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nbox = REGION_NUM_RECTS(pClip);
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pbox = REGION_RECTS(pClip);
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while (nbox--) {
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if (pbox->y1 > y || pbox->y2 <= y)
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continue;
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if (x1 < pbox->x1)
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x1 = pbox->x1;
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if (x2 > pbox->x2)
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x2 = pbox->x2;
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if (x2 <= x1)
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continue;
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glamor_fill (drawable,gc,
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x1 + off_x, y + off_y,
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x2 - x1 , 1);
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pbox++;
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}
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}
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return;
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fail:
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glamor_fallback("glamor_fillspans(): to %p (%c)\n", drawable,
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glamor_get_drawable_location(drawable));
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if (glamor_prepare_access(drawable, GLAMOR_ACCESS_RW)) {
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if (glamor_prepare_access_gc(gc)) {
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fbFillSpans(drawable, gc, n, points, widths, sorted);
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glamor_finish_access_gc(gc);
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}
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glamor_finish_access(drawable);
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}
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}
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