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resize effect: use preMultiply function for color

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This commit is contained in:
Thomas Lübking 2013-04-11 21:36:03 +02:00
parent 3faecf5075
commit 1bda85f9f5
1 changed files with 3 additions and 7 deletions
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10
effects/resize/resize.cpp
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@ -24,7 +24,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#include <kwinglutils.h>
#ifdef KWIN_HAVE_XRENDER_COMPOSITING
#include <xcb/render.h>
#include "kwinxrenderutils.h"
#endif
#include <KColorScheme>
@ -107,18 +107,14 @@ void ResizeEffect::paintWindow(EffectWindow* w, int mask, QRegion region, Window
#ifdef KWIN_HAVE_XRENDER_COMPOSITING
if (effects->compositingType() == XRenderCompositing) {
xcb_render_color_t col;
col.alpha = int(alpha * 0xffff);
col.red = int(alpha * 0xffff * color.red() / 255);
col.green = int(alpha * 0xffff * color.green() / 255);
col.blue = int(alpha * 0xffff * color.blue() / 255);
QVector<xcb_rectangle_t> rects;
foreach (const QRect & r, paintRegion.rects()) {
xcb_rectangle_t rect = {int16_t(r.x()), int16_t(r.y()), uint16_t(r.width()), uint16_t(r.height())};
rects << rect;
}
xcb_render_fill_rectangles(connection(), XCB_RENDER_PICT_OP_OVER,
effects->xrenderBufferPicture(), col, rects.count(), rects.constData());
effects->xrenderBufferPicture(), preMultiply(color, alpha),
rects.count(), rects.constData());
}
#endif
}