From 41c11711975bbd544bec581ec1a3628e8b32855c Mon Sep 17 00:00:00 2001
From: Hermet Park <hermet@lottiefiles.com>
Date: Tue, 22 Oct 2024 13:31:44 +0900
Subject: [PATCH] sw_engine: corrected the blur feathering region.

issue: https://github.com/thorvg/thorvg/issues/2892
---
 src/renderer/sw_engine/tvgSwPostEffect.cpp | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/src/renderer/sw_engine/tvgSwPostEffect.cpp b/src/renderer/sw_engine/tvgSwPostEffect.cpp
index ad799525..4aea7d5c 100644
--- a/src/renderer/sw_engine/tvgSwPostEffect.cpp
+++ b/src/renderer/sw_engine/tvgSwPostEffect.cpp
@@ -37,13 +37,12 @@ struct SwGaussianBlur
 static void _gaussianExtendRegion(RenderRegion& region, int extra, int8_t direction)
 {
     //bbox region expansion for feathering
-    if (direction == 0 || direction == 1) {
+    if (direction != 2) {
         region.x = -extra;
-        region.y = -extra;
-    }
-
-    if (direction == 0 || direction == 2) {
         region.w = extra * 2;
+    }
+    if (direction != 1) {
+        region.y = -extra;
         region.h = extra * 2;
     }
 }