Reenable circle blur fast path for ellipse that transforms to circle
Bug: chromium:1132617
Change-Id: Id9ecc22dfd1720195e0753cfc2b0897fe09dc2ae
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/327378
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
diff --git a/src/core/SkBlurMF.cpp b/src/core/SkBlurMF.cpp
index 55581ff..48e1601 100644
--- a/src/core/SkBlurMF.cpp
+++ b/src/core/SkBlurMF.cpp
@@ -713,21 +713,33 @@
std::unique_ptr<GrFragmentProcessor> fp;
+ SkRRect devRRect;
+ bool devRRectIsValid = srcRRect.transform(viewMatrix, &devRRect);
+
+ bool devRRectIsCircle = devRRectIsValid && SkRRectPriv::IsCircle(devRRect);
+
bool canBeRect = srcRRect.isRect() && viewMatrix.preservesRightAngles();
- bool canBeCircle = SkRRectPriv::IsCircle(srcRRect) && viewMatrix.isSimilarity();
+ bool canBeCircle = (SkRRectPriv::IsCircle(srcRRect) && viewMatrix.isSimilarity()) ||
+ devRRectIsCircle;
+
if (canBeRect || canBeCircle) {
if (canBeRect) {
fp = GrRectBlurEffect::Make(
/*inputFP=*/nullptr, context, *context->priv().caps()->shaderCaps(),
srcRRect.rect(), viewMatrix, xformedSigma);
} else {
- SkPoint center = {srcRRect.getBounds().centerX(), srcRRect.getBounds().centerY()};
- viewMatrix.mapPoints(¢er, 1);
- SkScalar radius = viewMatrix.mapVector(0, srcRRect.width()/2.f).length();
- SkRect devBounds = {center.x() - radius,
- center.y() - radius,
- center.x() + radius,
- center.y() + radius};
+ SkRect devBounds;
+ if (devRRectIsCircle) {
+ devBounds = devRRect.getBounds();
+ } else {
+ SkPoint center = {srcRRect.getBounds().centerX(), srcRRect.getBounds().centerY()};
+ viewMatrix.mapPoints(¢er, 1);
+ SkScalar radius = viewMatrix.mapVector(0, srcRRect.width()/2.f).length();
+ devBounds = {center.x() - radius,
+ center.y() - radius,
+ center.x() + radius,
+ center.y() + radius};
+ }
fp = GrCircleBlurFragmentProcessor::Make(/*inputFP=*/nullptr, context, devBounds,
xformedSigma);
}
@@ -760,8 +772,7 @@
if (!viewMatrix.isScaleTranslate()) {
return false;
}
- SkRRect devRRect;
- if (!srcRRect.transform(viewMatrix, &devRRect) || !SkRRectPriv::AllCornersCircular(devRRect)) {
+ if (!devRRectIsValid || !SkRRectPriv::AllCornersCircular(devRRect)) {
return false;
}