Wire SKSL based stretch shader to HWUI

--Ported SKSL based stretch shader from OpenGL prototype
--Hooked up the stretch APIs in RenderNode to the stretch
shader.
--Updated RenderNode layer logic to promote the RenderNode to
a layer if there is a stretch to be applied to it in order
to feed the layer as input to the stretch shader

Bug: 179047472
Test: builds + sample overscroll stretches + updated CTS test
Change-Id: I744ff70099fe251ce07f23d067bf13444a468c08

1 files changed, 8 insertions, 6 deletions

diff --git a/libs/hwui/pipeline/skia/RenderNodeDrawable.cpp b/libs/hwui/pipeline/skia/RenderNodeDrawable.cpp
index c01021221f37..cb0ff8d871d4 100644
--- a/libs/hwui/pipeline/skia/RenderNodeDrawable.cpp
+++ b/libs/hwui/pipeline/skia/RenderNodeDrawable.cpp
@@ -169,8 +169,8 @@ void RenderNodeDrawable::forceDraw(SkCanvas* canvas) const {
     displayList->mProjectedOutline = nullptr;
 }
 
-static bool layerNeedsPaint(const LayerProperties& properties, float alphaMultiplier,
-                            SkPaint* paint) {
+static bool layerNeedsPaint(const sk_sp<SkImage>& snapshotImage, const LayerProperties& properties,
+                            float alphaMultiplier, SkPaint* paint) {
     if (alphaMultiplier < 1.0f || properties.alpha() < 255 ||
         properties.xferMode() != SkBlendMode::kSrcOver || properties.getColorFilter() != nullptr ||
         properties.getImageFilter() != nullptr || !properties.getStretchEffect().isEmpty()) {
@@ -179,7 +179,8 @@ static bool layerNeedsPaint(const LayerProperties& properties, float alphaMultip
         paint->setColorFilter(sk_ref_sp(properties.getColorFilter()));
 
         sk_sp<SkImageFilter> imageFilter = sk_ref_sp(properties.getImageFilter());
-        sk_sp<SkImageFilter> stretchFilter = properties.getStretchEffect().getImageFilter();
+        sk_sp<SkImageFilter> stretchFilter =
+                properties.getStretchEffect().getImageFilter(snapshotImage);
         sk_sp<SkImageFilter> filter;
         if (imageFilter && stretchFilter) {
             filter = SkImageFilters::Compose(
@@ -240,7 +241,8 @@ void RenderNodeDrawable::drawContent(SkCanvas* canvas) const {
         if (renderNode->getLayerSurface() && mComposeLayer) {
             SkASSERT(properties.effectiveLayerType() == LayerType::RenderLayer);
             SkPaint paint;
-            layerNeedsPaint(layerProperties, alphaMultiplier, &paint);
+            sk_sp<SkImage> snapshotImage = renderNode->getLayerSurface()->makeImageSnapshot();
+            layerNeedsPaint(snapshotImage, layerProperties, alphaMultiplier, &paint);
             SkSamplingOptions sampling(SkFilterMode::kLinear);
 
             // surfaces for layers are created on LAYER_SIZE boundaries (which are >= layer size) so
@@ -254,8 +256,8 @@ void RenderNodeDrawable::drawContent(SkCanvas* canvas) const {
                 canvas->drawAnnotation(bounds, String8::format(
                     "SurfaceID|%" PRId64, renderNode->uniqueId()).c_str(), nullptr);
             }
-            canvas->drawImageRect(renderNode->getLayerSurface()->makeImageSnapshot(), bounds,
-                                  bounds, sampling, &paint, SkCanvas::kStrict_SrcRectConstraint);
+            canvas->drawImageRect(snapshotImage, bounds, bounds, sampling, &paint,
+                                  SkCanvas::kStrict_SrcRectConstraint);
 
             if (!renderNode->getSkiaLayer()->hasRenderedSinceRepaint) {
                 renderNode->getSkiaLayer()->hasRenderedSinceRepaint = true;