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/*
* Copyright © 2009 Intel Corporation
* Copyright © 1998 Keith Packard
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* Authors:
* Eric Anholt <eric@anholt.net>
*
*/
#include "glamor_priv.h"
/** @file glamor_polylines.c
*
* GC PolyFillRect implementation, taken straight from fb_fill.c
*/
/**
* glamor_poly_lines() checks if it can accelerate the lines as a group of
* horizontal or vertical lines (rectangles), and uses existing rectangle fill
* acceleration if so.
*/
static Bool
_glamor_poly_lines(DrawablePtr drawable, GCPtr gc, int mode, int n,
DDXPointPtr points, Bool fallback)
{
xRectangle *rects;
int x1, x2, y1, y2;
int i;
/* Don't try to do wide lines or non-solid fill style. */
if (gc->lineWidth != 0) {
/* This ends up in miSetSpans, which is accelerated as well as we
* can hope X wide lines will be.
*/
goto wide_line;
}
if (gc->lineStyle != LineSolid) {
glamor_fallback
("non-solid fill line style %d\n",
gc->lineStyle);
goto fail;
}
rects = malloc(sizeof(xRectangle) * (n - 1));
x1 = points[0].x;
y1 = points[0].y;
/* If we have any non-horizontal/vertical, fall back. */
for (i = 0; i < n - 1; i++) {
if (mode == CoordModePrevious) {
x2 = x1 + points[i + 1].x;
y2 = y1 + points[i + 1].y;
} else {
x2 = points[i + 1].x;
y2 = points[i + 1].y;
}
if (x1 != x2 && y1 != y2) {
free(rects);
glamor_fallback("stub diagonal poly_line\n");
goto fail;
}
if (x1 < x2) {
rects[i].x = x1;
rects[i].width = x2 - x1 + 1;
} else {
rects[i].x = x2;
rects[i].width = x1 - x2 + 1;
}
if (y1 < y2) {
rects[i].y = y1;
rects[i].height = y2 - y1 + 1;
} else {
rects[i].y = y2;
rects[i].height = y1 - y2 + 1;
}
x1 = x2;
y1 = y2;
}
gc->ops->PolyFillRect(drawable, gc, n - 1, rects);
free(rects);
return TRUE;
fail:
if (!fallback
&& glamor_ddx_fallback_check_pixmap(drawable)
&& glamor_ddx_fallback_check_gc(gc))
return FALSE;
if (gc->lineWidth == 0) {
if (glamor_prepare_access(drawable, GLAMOR_ACCESS_RW)) {
if (glamor_prepare_access_gc(gc)) {
fbPolyLine(drawable, gc, mode, n, points);
glamor_finish_access_gc(gc);
}
glamor_finish_access(drawable, GLAMOR_ACCESS_RW);
}
} else {
wide_line:
/* fb calls mi functions in the lineWidth != 0 case. */
fbPolyLine(drawable, gc, mode, n, points);
}
return TRUE;
}
void
glamor_poly_lines(DrawablePtr drawable, GCPtr gc, int mode, int n,
DDXPointPtr points)
{
_glamor_poly_lines(drawable, gc, mode, n, points, TRUE);
}
Bool
glamor_poly_lines_nf(DrawablePtr drawable, GCPtr gc, int mode, int n,
DDXPointPtr points)
{
return _glamor_poly_lines(drawable, gc, mode, n, points, FALSE);
}
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