mLastFrameNumberReceived(0),
mUpdateTexImageFailed(false),
mAutoRefresh(false),
- mFreezePositionUpdates(false)
+ mFreezeGeometryUpdates(false)
{
#ifdef USE_HWC2
ALOGV("Creating Layer %s", name.string());
mCurrentState.active.transform.set(0, 0);
mCurrentState.crop.makeInvalid();
mCurrentState.finalCrop.makeInvalid();
+ mCurrentState.requestedFinalCrop = mCurrentState.finalCrop;
+ mCurrentState.requestedCrop = mCurrentState.crop;
mCurrentState.z = 0;
#ifdef USE_HWC2
mCurrentState.alpha = 1.0f;
}
}
- // always set active to requested, unless we're asked not to
- // this is used by Layer, which special cases resizes.
- if (flags & eDontUpdateGeometryState) {
- } else {
+ // Here we apply various requested geometry states, depending on our
+ // latching configuration. See Layer.h for a detailed discussion of
+ // how geometry latching is controlled.
+ if (!(flags & eDontUpdateGeometryState)) {
Layer::State& editCurrentState(getCurrentState());
- if (mFreezePositionUpdates) {
+
+ // If mFreezeGeometryUpdates is true we are in the setGeometryAppliesWithResize
+ // mode, which causes attributes which normally latch regardless of scaling mode,
+ // to be delayed. We copy the requested state to the active state making sure
+ // to respect these rules (again see Layer.h for a detailed discussion).
+ //
+ // There is an awkward asymmetry in the handling of the crop states in the position
+ // states, as can be seen below. Largely this arises from position and transform
+ // being stored in the same data structure while having different latching rules.
+ // b/38182305
+ //
+ // Careful that "c" and editCurrentState may not begin as equivalent due to
+ // applyPendingStates in the presence of deferred transactions.
+ if (mFreezeGeometryUpdates) {
float tx = c.active.transform.tx();
float ty = c.active.transform.ty();
c.active = c.requested;
} else {
editCurrentState.active = editCurrentState.requested;
c.active = c.requested;
+ if (c.crop != c.requestedCrop ||
+ c.finalCrop != c.requestedFinalCrop) {
+ c.sequence++;
+ c.crop = c.requestedCrop;
+ c.finalCrop = c.requestedFinalCrop;
+ editCurrentState.crop = c.crop;
+ editCurrentState.finalCrop = c.finalCrop;
+ }
}
}
// we want to apply the position portion of the transform matrix immediately,
// but still delay scaling when resizing a SCALING_MODE_FREEZE layer.
mCurrentState.requested.transform.set(x, y);
- if (immediate && !mFreezePositionUpdates) {
+ if (immediate && !mFreezeGeometryUpdates) {
+ // Here we directly update the active state
+ // unlike other setters, because we store it within
+ // the transform, but use different latching rules.
+ // b/38182305
mCurrentState.active.transform.set(x, y);
}
- mFreezePositionUpdates = mFreezePositionUpdates || !immediate;
+ mFreezeGeometryUpdates = mFreezeGeometryUpdates || !immediate;
mCurrentState.modified = true;
setTransactionFlags(eTransactionNeeded);
}
bool Layer::setCrop(const Rect& crop, bool immediate) {
- if (mCurrentState.crop == crop)
+ if (mCurrentState.requestedCrop == crop)
return false;
mCurrentState.sequence++;
mCurrentState.requestedCrop = crop;
- if (immediate) {
+ if (immediate && !mFreezeGeometryUpdates) {
mCurrentState.crop = crop;
}
+ mFreezeGeometryUpdates = mFreezeGeometryUpdates || !immediate;
+
mCurrentState.modified = true;
setTransactionFlags(eTransactionNeeded);
return true;
}
bool Layer::setFinalCrop(const Rect& crop, bool immediate) {
- if (mCurrentState.finalCrop == crop)
+ if (mCurrentState.requestedFinalCrop == crop)
return false;
mCurrentState.sequence++;
mCurrentState.requestedFinalCrop = crop;
- if (immediate) {
+ if (immediate && !mFreezeGeometryUpdates) {
mCurrentState.finalCrop = crop;
}
+ mFreezeGeometryUpdates = mFreezeGeometryUpdates || !immediate;
+
mCurrentState.modified = true;
setTransactionFlags(eTransactionNeeded);
return true;
bool queuedBuffer = false;
LayerRejecter r(mDrawingState, getCurrentState(), recomputeVisibleRegions,
getProducerStickyTransform() != 0, mName.string(),
- mOverrideScalingMode, mFreezePositionUpdates);
+ mOverrideScalingMode, mFreezeGeometryUpdates);
status_t updateResult = mSurfaceFlingerConsumer->updateTexImage(&r,
mFlinger->mPrimaryDispSync, &mAutoRefresh, &queuedBuffer,
mLastFrameNumberReceived);
// the this layer's size and format
status_t setBuffers(uint32_t w, uint32_t h, PixelFormat format, uint32_t flags);
- // modify current state
+ // ------------------------------------------------------------------------
+ // Geometry setting functions.
+ //
+ // The following group of functions are used to specify the layers
+ // bounds, and the mapping of the texture on to those bounds. According
+ // to various settings changes to them may apply immediately, or be delayed until
+ // a pending resize is completed by the producer submitting a buffer. For example
+ // if we were to change the buffer size, and update the matrix ahead of the
+ // new buffer arriving, then we would be stretching the buffer to a different
+ // aspect before and after the buffer arriving, which probably isn't what we wanted.
+ //
+ // The first set of geometry functions are controlled by the scaling mode, described
+ // in window.h. The scaling mode may be set by the client, as it submits buffers.
+ // This value may be overriden through SurfaceControl, with setOverrideScalingMode.
+ //
+ // Put simply, if our scaling mode is SCALING_MODE_FREEZE, then
+ // matrix updates will not be applied while a resize is pending
+ // and the size and transform will remain in their previous state
+ // until a new buffer is submitted. If the scaling mode is another value
+ // then the old-buffer will immediately be scaled to the pending size
+ // and the new matrix will be immediately applied following this scaling
+ // transformation.
+
+ // Set the default buffer size for the assosciated Producer, in pixels. This is
+ // also the rendered size of the layer prior to any transformations. Parent
+ // or local matrix transformations will not affect the size of the buffer,
+ // but may affect it's on-screen size or clipping.
+ bool setSize(uint32_t w, uint32_t h);
+ // Set a 2x2 transformation matrix on the layer. This transform
+ // will be applied after parent transforms, but before any final
+ // producer specified transform.
+ bool setMatrix(const layer_state_t::matrix22_t& matrix);
- // These members of state (position, crop, and finalCrop)
- // may be updated immediately or have the update delayed
- // until a pending surface resize completes (if applicable).
+ // This second set of geometry attributes are controlled by
+ // setGeometryAppliesWithResize, and their default mode is to be
+ // immediate. If setGeometryAppliesWithResize is specified
+ // while a resize is pending, then update of these attributes will
+ // be delayed until the resize completes.
+
+ // setPosition operates in parent buffer space (pre parent-transform) or display
+ // space for top-level layers.
bool setPosition(float x, float y, bool immediate);
+ // Buffer space
bool setCrop(const Rect& crop, bool immediate);
+ // Parent buffer space/display space
bool setFinalCrop(const Rect& crop, bool immediate);
+ // TODO(b/38182121): Could we eliminate the various latching modes by
+ // using the layer hierarchy?
+ // -----------------------------------------------------------------------
bool setLayer(int32_t z);
bool setRelativeLayer(const sp<IBinder>& relativeToHandle, int32_t relativeZ);
- bool setSize(uint32_t w, uint32_t h);
#ifdef USE_HWC2
bool setAlpha(float alpha);
#else
bool setAlpha(uint8_t alpha);
#endif
- bool setMatrix(const layer_state_t::matrix22_t& matrix);
bool setTransparentRegionHint(const Region& transparent);
bool setFlags(uint8_t flags, uint8_t mask);
bool setLayerStack(uint32_t layerStack);
bool mUpdateTexImageFailed; // This is only accessed on the main thread.
bool mAutoRefresh;
- bool mFreezePositionUpdates;
+ bool mFreezeGeometryUpdates;
// Child list about to be committed/used for editing.
LayerVector mCurrentChildren;
mStickyTransformSet(stickySet),
mName(name),
mOverrideScalingMode(overrideScalingMode),
- mFreezePositionUpdates(freezePositionUpdates) {}
+ mFreezeGeometryUpdates(freezePositionUpdates) {}
bool LayerRejecter::reject(const sp<GraphicBuffer>& buf, const BufferItem& item) {
if (buf == NULL) {
mRecomputeVisibleRegions = true;
}
- if (mFront.crop != mFront.requestedCrop) {
- mFront.crop = mFront.requestedCrop;
- mCurrent.crop = mFront.requestedCrop;
- mRecomputeVisibleRegions = true;
- }
- if (mFront.finalCrop != mFront.requestedFinalCrop) {
- mFront.finalCrop = mFront.requestedFinalCrop;
- mCurrent.finalCrop = mFront.requestedFinalCrop;
- mRecomputeVisibleRegions = true;
- }
- mFreezePositionUpdates = false;
+ mFreezeGeometryUpdates = false;
return false;
}
bool mStickyTransformSet;
const char *mName;
int32_t mOverrideScalingMode;
- bool &mFreezePositionUpdates;
+ bool &mFreezeGeometryUpdates;
};
} // namespace android
-#endif // ANDROID_LAYER_REJECTER_H
\ No newline at end of file
+#endif // ANDROID_LAYER_REJECTER_H
EXPECT_CROPPED_STATE("after the resize finishes");
}
+TEST_F(CropLatchingTest, FinalCropLatchingRegressionForb37531386) {
+ EXPECT_INITIAL_STATE("before anything");
+ // In this scenario, we attempt to set the final crop a second time while the resize
+ // is still pending, and ensure we are successful.
+ SurfaceComposerClient::openGlobalTransaction();
+ mFGSurfaceControl->setSize(128, 128);
+ mFGSurfaceControl->setGeometryAppliesWithResize();
+ mFGSurfaceControl->setFinalCrop(Rect(64, 64, 127, 127));
+ SurfaceComposerClient::closeGlobalTransaction(true);
+
+ SurfaceComposerClient::openGlobalTransaction();
+ mFGSurfaceControl->setFinalCrop(Rect(0, 0, -1, -1));
+ SurfaceComposerClient::closeGlobalTransaction(true);
+
+ EXPECT_INITIAL_STATE("after setting crops with geometryAppliesWithResize");
+
+ completeFGResize();
+
+ EXPECT_INITIAL_STATE("after the resize finishes");
+}
+
TEST_F(LayerUpdateTest, DeferredTransactionTest) {
sp<ScreenCapture> sc;
{
OSDN Git Service
