Merge pull request #3 from Eskils/develop

Fix applying gradientBlur causes unintended blurring

Author: Eskils

README.md

@@ -51,7 +51,7 @@ let package = Package(
   dependencies: [
     .package(
       url: "https://github.com/Eskils/VariableBlurImageView", 
-      .upToNextMinor(from: "1.1.1") // or `.upToNextMajor
+      .upToNextMinor(from: "1.1.2") // or `.upToNextMajor
     )
   ],
   targets: [

Sources/VariableBlurImageView/VariableBlur.metal

@@ -182,9 +182,16 @@ kernel void gradientVariableBlur(
     const float4 gradientValue = gradient.read(gradientGid);
     const half luma = ((half)gradientValue.x + (half)gradientValue.y + (half)gradientValue.z) / 3;
 
-    half radius = max(luma * (half)maxRadius, 1.0h);
+    half radius = luma * (half)maxRadius;
+    
+    float4 colorOut;
+    
+    if (radius >= 1.0h) {
+        colorOut = (float4)colorForBlurAtPixel(hGid, textureIn, radius);
+    } else {
+        colorOut = textureIn.read(gid);
+    }
 
-    float4 colorOut = (float4)colorForBlurAtPixel(hGid, textureIn, radius);
 
     textureOut.write(colorOut, gid);
 }