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fix an orientation change drawing artifact.

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a wrong orientation would be briefly shown when
rotation the screen. this happened when the window manager
set a custom transformation and the h/w composer was used.

the custom transformation was applied twice in that case.

Bug: 5037522
Change-Id: Ic1f87b63cd843f4475e4265d1624463825d775c4
This commit is contained in:
Mathias Agopian 2011-08-12 17:09:09 -07:00
parent f83b060b63
commit c5953904ad
1 changed files with 2 additions and 3 deletions
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5
services/surfaceflinger/Layer.cpp
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@ -191,14 +191,13 @@ void Layer::setGeometry(hwc_layer_t* hwcl)
* 1) buffer orientation/flip/mirror
* 2) state transformation (window manager)
* 3) layer orientation (screen orientation)
* mOrientation is already the composition of (2) and (3)
* (NOTE: the matrices are multiplied in reverse order)
*/
const Transform bufferOrientation(mCurrentTransform);
const Transform& stateTransform(s.transform);
const Transform layerOrientation(mOrientation);
const Transform tr(layerOrientation * stateTransform * bufferOrientation);
const Transform tr(layerOrientation * bufferOrientation);
// this gives us only the "orientation" component of the transform
const uint32_t finalTransform = tr.getOrientation();