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Commit a67cda6b authored by TreeHugger Robot's avatar TreeHugger Robot Committed by Android (Google) Code Review
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Merge "SurfaceFlinger: Optimize region calculation for invisible layers."

parents 31b3a88f e5f4f694

services/surfaceflinger/Layer.cpp

+6 −0
Original line number Diff line number Diff line
@@ -871,6 +871,12 @@ void Layer::setVisibleNonTransparentRegion(const Region& setVisibleNonTransparen 
    this->visibleNonTransparentRegion = setVisibleNonTransparentRegion;

}



void Layer::clearVisibilityRegions() {

    visibleRegion.clear();

    visibleNonTransparentRegion.clear();

    coveredRegion.clear();

}



// ----------------------------------------------------------------------------

// transaction

// ----------------------------------------------------------------------------

services/surfaceflinger/Layer.h

+5 −0
Original line number Diff line number Diff line
@@ -434,6 +434,11 @@ public: 
     */

    void setVisibleNonTransparentRegion(const Region& visibleNonTransparentRegion);



    /*

     * Clear the visible, covered, and non-transparent regions.

     */

    void clearVisibilityRegions();



    /*

     * latchBuffer - called each time the screen is redrawn and returns whether

     * the visible regions need to be recomputed (this is a fairly heavy

services/surfaceflinger/SurfaceFlinger.cpp

+5 −0
Original line number Diff line number Diff line
@@ -2534,6 +2534,11 @@ void SurfaceFlinger::computeVisibleRegions(const sp<const DisplayDevice>& displa 
            }

        }



        if (visibleRegion.isEmpty()) {

            layer->clearVisibilityRegions();

            return;

        }



        // Clip the covered region to the visible region

        coveredRegion = aboveCoveredLayers.intersect(visibleRegion);