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set correct crop rectangle in LayerBase::setCrop 

The crop always had left=top=0, because the crop position
and the layer's transform were merged together in
computeBounds() (which really used to compute the
bounds in screen space, which we usually call the
"frame" elsewhere in the code)

Note: in practice this crop value is not used by
hwc, because it's overridden in Layer::setGeometry(), which
is why this bug was never apparent.

Change-Id: I1ec6400a8fc8314408e4252708f43ea98c2fe64e
This commit is contained in:
Mathias Agopian 2013-02-26 16:37:53 -08:00
parent eb0d12963d
commit 5219a06d61
2 changed files with 11 additions and 8 deletions
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17
services/surfaceflinger/LayerBase.cpp
View File

@ -259,7 +259,7 @@ Rect LayerBase::computeBounds() const {
if (!s.active.crop.isEmpty()) {
win.intersect(s.active.crop, &win);
}
return s.transform.transform(win);
return win;
}
Region LayerBase::latchBuffer(bool& recomputeVisibleRegions) {
@ -289,13 +289,16 @@ void LayerBase::setGeometry(
HWC_BLENDING_COVERAGE);
}
const Transform& tr = hw->getTransform();
Rect transformedBounds(computeBounds());
transformedBounds = tr.transform(transformedBounds);
// scaling is already applied in transformedBounds
layer.setFrame(transformedBounds);
layer.setCrop(transformedBounds.getBounds());
Rect bounds(computeBounds());
// apply the layer's transform, followed by the display's global transform
// here we're guaranteed that the layer's transform preserves rects
const Transform& tr = hw->getTransform();
Rect frame(tr.transform(s.transform.transform(bounds)));
layer.setFrame(frame);
layer.setCrop(bounds);
}
void LayerBase::setPerFrameData(const sp<const DisplayDevice>& hw,

2
services/surfaceflinger/SurfaceFlinger.cpp
View File

@ -1384,7 +1384,7 @@ void SurfaceFlinger::computeVisibleRegions(
// handle hidden surfaces by setting the visible region to empty
if (CC_LIKELY(layer->isVisible())) {
const bool translucent = !layer->isOpaque();
Rect bounds(layer->computeBounds());
Rect bounds(s.transform.transform(layer->computeBounds()));
visibleRegion.set(bounds);
if (!visibleRegion.isEmpty()) {
// Remove the transparent area from the visible region