Split distance vector into direction and magnitude components

src/core/SkNormalBevelSource.cpp

Index: src/core/SkNormalBevelSource.cpp
diff --git a/src/core/SkNormalBevelSource.cpp b/src/core/SkNormalBevelSource.cpp
index 04faa0006fa15d42d0d0e85ab490492dcc98792d..f4bd031c4c7dbccd1f433f646aa8c7ef3197d73d 100644
--- a/src/core/SkNormalBevelSource.cpp
+++ b/src/core/SkNormalBevelSource.cpp
@@ -86,10 +86,9 @@ public:
             }
 
             // Here we are splitting the distance vector into length and normalized direction
-            // TODO: Output these values from the geometry processor frag code instead of the vector
-            fragBuilder->codeAppendf("float dv_length = length(%s);",
+            fragBuilder->codeAppendf("float dv_length = %s.z;",
                                      fragBuilder->distanceVectorName());
-            fragBuilder->codeAppendf("vec2 dv_norm = normalize(%s);",
+            fragBuilder->codeAppendf("vec2 dv_norm = %s.xy;",
                                      fragBuilder->distanceVectorName());
 
             // Asserting presence of necessary uniforms