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Commit fc330a6b authored by Wei Zou's avatar Wei Zou Committed by toastcfh
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frameworks/base: Update dirty region feature for current surface 

In HardwareRender module, when a surface is made to current, check to turn on the
"dirty region" feature if it is enabled. This is to ensure current surface has
preserved-buffer swap enabled if the "dirty region" feature is on.

Change-Id: I4878238955a0adcd714e42b46bbbe9011283db28
parent ea52d7e0

core/java/android/view/HardwareRenderer.java

+15 −2
Original line number Diff line number Diff line
@@ -456,6 +456,8 @@ public abstract class HardwareRenderer { 
        }



        boolean mDirtyRegionsEnabled;

        boolean mUpdateDirtyRegions;



        final boolean mVsyncDisabled;



        final int mGlVersion;
@@ -690,6 +692,12 @@ public abstract class HardwareRenderer { 
            

            initCaches();



            enableDirtyRegions();



            return mEglContext.getGL();

        }



        private void enableDirtyRegions() {

            // If mDirtyRegions is set, this means we have an EGL configuration

            // with EGL_SWAP_BEHAVIOR_PRESERVED_BIT set

            if (sDirtyRegions) {
@@ -705,8 +713,6 @@ public abstract class HardwareRenderer { 
                // configuration (see RENDER_DIRTY_REGIONS)

                mDirtyRegionsEnabled = GLES20Canvas.isBackBufferPreserved();

            }



            return mEglContext.getGL();

        }



        abstract void initCaches();
@@ -760,6 +766,9 @@ public abstract class HardwareRenderer { 
                if (!createSurface(holder)) {

                    return;

                }



                mUpdateDirtyRegions = true;



                if (mCanvas != null) {

                    setEnabled(true);

                }
@@ -930,6 +939,10 @@ public abstract class HardwareRenderer { 
                    fallback(true);

                    return SURFACE_STATE_ERROR;

                } else {

                    if (mUpdateDirtyRegions) {

                        enableDirtyRegions();

                        mUpdateDirtyRegions = false;

                    }

                    return SURFACE_STATE_UPDATED;

                }

            }