Check if the buffer is actually being scaled instead of only checking scaling mode
BufferStateLayers have a default scale to window scaling mode which
means the layers would be set use texture filtering regardless of
the buffer size. This was breaking some pixel by pixel screenshot
comparison tests. Instead check if the buffer size, after applying
any buffer transforms, matches the layer size.
This is a cherry pick of ag/12947725, preparing for a subsequent change
to apply the same logic to BufferLayer.
Bug: b/182584062
Test: android.view.inputmethod.cts.FocusHandlingTest#testNonFocusablePopupWindowDoesNotAffectImeVisibility
Merged-In: I90b05187a2e22834a99d3690095293fa37118734
Change-Id: I8a64ad96c82b65abf5d1312447ff76915c61f5d5
diff --git a/services/surfaceflinger/BufferStateLayer.cpp b/services/surfaceflinger/BufferStateLayer.cpp
index 790f2ec..ad2620c 100644
--- a/services/surfaceflinger/BufferStateLayer.cpp
+++ b/services/surfaceflinger/BufferStateLayer.cpp
@@ -760,6 +760,31 @@
static_cast<float>(s.active.transform.ty() + s.active.h)),
radius);
}
+
+bool BufferStateLayer::bufferNeedsFiltering() const {
+ const State& s(getDrawingState());
+ if (!s.buffer) {
+ return false;
+ }
+
+ uint32_t bufferWidth = s.buffer->width;
+ uint32_t bufferHeight = s.buffer->height;
+
+ // Undo any transformations on the buffer and return the result.
+ if (s.transform & ui::Transform::ROT_90) {
+ std::swap(bufferWidth, bufferHeight);
+ }
+
+ if (s.transformToDisplayInverse) {
+ uint32_t invTransform = DisplayDevice::getPrimaryDisplayRotationFlags();
+ if (invTransform & ui::Transform::ROT_90) {
+ std::swap(bufferWidth, bufferHeight);
+ }
+ }
+
+ const Rect layerSize{getBounds()};
+ return layerSize.width() != bufferWidth || layerSize.height() != bufferHeight;
+}
} // namespace android
// TODO(b/129481165): remove the #pragma below and fix conversion issues