commit ae30efec27d4e865da35b1e27b4fa982ea65b39b
author Nader Jawad <njawad@google.com> Tue Sep 01 22:20:42 2020 -0700
committer Nader Jawad <njawad@google.com> Tue Sep 01 22:22:53 2020 -0700
tree f3c152d4e460184fb4f26e0e74b9872c6919c8d1
parent 3e64130d34e8083e5e313dbfeab20b98ea329171

Fixed issue where large blur radii
would blur less than smaller blur radii

Changed SkImageFilter blur creation to include
SkTileMode::kClamp parameter to use edge pixels
for blur kernels that are larger than the source

Fixes: 167493483
Test: Added test to CTS ShaderTest
Change-Id: Ibbe1e0dfaf46413fcae665620fd154b9bf9897c9

libs/hwui/shader/BlurShader.cpp

diff --git a/libs/hwui/shader/BlurShader.cpp b/libs/hwui/shader/BlurShader.cpp
index 4d18cdd..fa10be1 100644
--- a/libs/hwui/shader/BlurShader.cpp
+++ b/libs/hwui/shader/BlurShader.cpp
@@ -26,7 +26,9 @@
             SkImageFilters::Blur(
                     Blur::convertRadiusToSigma(radiusX),
                     Blur::convertRadiusToSigma(radiusY),
-                    inputShader ? inputShader->asSkImageFilter() : nullptr)
+                    SkTileMode::kClamp,
+                    inputShader ? inputShader->asSkImageFilter() : nullptr,
+                    nullptr)
             ) { }
 
 sk_sp<SkImageFilter> BlurShader::makeSkImageFilter() {