Add layer updates debugging feature to Skia pipelines

When this property is turned on, we flash green
every time a hardware layer is updated.

Test: Matches the behavior in OpenGLPipeline

BUG:32370375

Change-Id: I916f94eee644c185d8a3f9fa4cd69e087ed1e92d

1 files changed, 8 insertions, 0 deletions

diff --git a/libs/hwui/pipeline/skia/RenderNodeDrawable.cpp b/libs/hwui/pipeline/skia/RenderNodeDrawable.cpp
index accbabda5a2f..7dcbbd059e88 100644
--- a/libs/hwui/pipeline/skia/RenderNodeDrawable.cpp
+++ b/libs/hwui/pipeline/skia/RenderNodeDrawable.cpp
@@ -164,6 +164,14 @@ void RenderNodeDrawable::drawContent(SkCanvas* canvas) const {
                 paint = &tmpPaint;
             }
             renderNode->getLayerSurface()->draw(canvas, 0, 0, paint);
+
+            if (CC_UNLIKELY(Properties::debugLayersUpdates
+                    && !renderNode->getSkiaLayer()->hasRenderedSinceRepaint)) {
+                renderNode->getSkiaLayer()->hasRenderedSinceRepaint = true;
+                SkPaint layerPaint;
+                layerPaint.setColor(0x7f00ff00);
+                canvas->drawRect(bounds, layerPaint);
+            }
         // composing a software layer with alpha
         } else if (properties.effectiveLayerType() == LayerType::Software) {
             SkPaint paint;