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Fix ScreenRotation flicker from 90 to 270.

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When porting over ScreenRotation to use BufferStateLayer, rotating from
90 to 270 broke. This is because the old code was trying to screenshot
and rotate based off 0 rotation instead of off the current rotation.

Cleaned up the code so it now takes the screenshot in the current
orientation and creates a rotation matrix based on the current
rotation

Test: Screen rotation
Fixes: 186352065
Change-Id: I0d1268a849959fbb3d2b3158e099b595d00f273b
This commit is contained in:
chaviw
2021-04-30 12:15:16 -05:00
parent ebffd9b97f
commit 465ae43483
1 changed files with 10 additions and 15 deletions
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25
services/core/java/com/android/server/wm/ScreenRotationAnimation.java
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@@ -163,14 +163,8 @@ class ScreenRotationAnimation {
originalWidth = displayInfo.logicalWidth;
originalHeight = displayInfo.logicalHeight;
}
if (realOriginalRotation == Surface.ROTATION_90
|| realOriginalRotation == Surface.ROTATION_270) {
mWidth = originalHeight;
mHeight = originalWidth;
} else {
mWidth = originalWidth;
mHeight = originalHeight;
}
mWidth = originalWidth;
mHeight = originalHeight;
mOriginalRotation = originalRotation;
// If the delta is not zero, the rotation of display may not change, but we still want to
@@ -189,8 +183,14 @@ class ScreenRotationAnimation {
final SurfaceControl.Transaction t = mService.mTransactionFactory.get();
try {
SurfaceControl.LayerCaptureArgs args =
new SurfaceControl.LayerCaptureArgs.Builder(displayContent.getSurfaceControl())
.setCaptureSecureLayers(true)
.setAllowProtected(true)
.setSourceCrop(new Rect(0, 0, mWidth, mHeight))
.build();
SurfaceControl.ScreenshotHardwareBuffer screenshotBuffer =
mService.mDisplayManagerInternal.systemScreenshot(displayId);
SurfaceControl.captureLayers(args);
if (screenshotBuffer == null) {
Slog.w(TAG, "Unable to take screenshot of display " + displayId);
return;
@@ -236,9 +236,6 @@ class ScreenRotationAnimation {
GraphicBuffer buffer = GraphicBuffer.createFromHardwareBuffer(
screenshotBuffer.getHardwareBuffer());
// Scale the layer to the display size.
float dsdx = (float) mWidth / hardwareBuffer.getWidth();
float dsdy = (float) mHeight / hardwareBuffer.getHeight();
t.setLayer(mScreenshotLayer, SCREEN_FREEZE_LAYER_BASE);
t.reparent(mBackColorSurface, displayContent.getSurfaceControl());
@@ -247,7 +244,6 @@ class ScreenRotationAnimation {
t.setAlpha(mBackColorSurface, 1);
t.setBuffer(mScreenshotLayer, buffer);
t.setColorSpace(mScreenshotLayer, screenshotBuffer.getColorSpace());
t.setMatrix(mScreenshotLayer, dsdx, 0, 0, dsdy);
t.show(mScreenshotLayer);
t.show(mBackColorSurface);
@@ -330,9 +326,8 @@ class ScreenRotationAnimation {
// Compute the transformation matrix that must be applied
// to the snapshot to make it stay in the same original position
// with the current screen rotation.
int delta = deltaRotation(rotation, Surface.ROTATION_0);
int delta = deltaRotation(rotation, mOriginalRotation);
RotationAnimationUtils.createRotationMatrix(delta, mWidth, mHeight, mSnapshotInitialMatrix);
setRotationTransform(t, mSnapshotInitialMatrix);
}