Improve layer rendering quality
Increase filter quality when rendering a layer into the frame
buffer from kNone_SkFilterQuality to kLow_SkFilterQuality.
This visibly improves the quality if the layer is scaled.
For example the circle shutter button in camera app looks
better in pressed state (there is no jagged edge).
Test: Ran camera app
Bug: 72144993
Change-Id: I138d930a25301a369876d76a2cd322df0324f0f2
diff --git a/libs/hwui/pipeline/skia/RenderNodeDrawable.cpp b/libs/hwui/pipeline/skia/RenderNodeDrawable.cpp
index e2f02df..77925fd 100644
--- a/libs/hwui/pipeline/skia/RenderNodeDrawable.cpp
+++ b/libs/hwui/pipeline/skia/RenderNodeDrawable.cpp
@@ -142,6 +142,7 @@
static bool layerNeedsPaint(const LayerProperties& properties, float alphaMultiplier,
SkPaint* paint) {
+ paint->setFilterQuality(kLow_SkFilterQuality);
if (alphaMultiplier < 1.0f || properties.alpha() < 255 ||
properties.xferMode() != SkBlendMode::kSrcOver || properties.colorFilter() != nullptr) {
paint->setAlpha(properties.alpha() * alphaMultiplier);
@@ -200,18 +201,15 @@
// composing a hardware layer
if (renderNode->getLayerSurface() && mComposeLayer) {
SkASSERT(properties.effectiveLayerType() == LayerType::RenderLayer);
- SkPaint* paint = nullptr;
- SkPaint tmpPaint;
- if (layerNeedsPaint(layerProperties, alphaMultiplier, &tmpPaint)) {
- paint = &tmpPaint;
- }
+ SkPaint paint;
+ layerNeedsPaint(layerProperties, alphaMultiplier, &paint);
// surfaces for layers are created on LAYER_SIZE boundaries (which are >= layer size) so
// we need to restrict the portion of the surface drawn to the size of the renderNode.
SkASSERT(renderNode->getLayerSurface()->width() >= bounds.width());
SkASSERT(renderNode->getLayerSurface()->height() >= bounds.height());
canvas->drawImageRect(renderNode->getLayerSurface()->makeImageSnapshot().get(),
- bounds, bounds, paint);
+ bounds, bounds, &paint);
if (!renderNode->getSkiaLayer()->hasRenderedSinceRepaint) {
renderNode->getSkiaLayer()->hasRenderedSinceRepaint = true;