From c926eebba1612bbd18700fae25cd1a631b4b63c2 Mon Sep 17 00:00:00 2001
From: Sergii Liebodkin <s.lebedkin@gmail.com>
Date: Thu, 10 Oct 2024 16:53:37 +0000
Subject: [PATCH] wg_engine: fix empty shape aabb handling

see https://github.com/thorvg/thorvg/issues/2843:
---
 src/renderer/wg_engine/tvgWgRenderData.cpp | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/renderer/wg_engine/tvgWgRenderData.cpp b/src/renderer/wg_engine/tvgWgRenderData.cpp
index 33b14ccb..6ddb37a3 100755
--- a/src/renderer/wg_engine/tvgWgRenderData.cpp
+++ b/src/renderer/wg_engine/tvgWgRenderData.cpp
@@ -411,9 +411,12 @@ void WgRenderDataShape::updateMeshes(WgContext &context, const RenderShape &rsha
             });
         }
     } 
-    // update shapes bbox
-    updateAABB(tr);
-    meshDataBBox.update(context, pMin, pMax);
+    // update shapes bbox (with empty path hadnling)
+    if ((this->meshGroupShapesBBox.meshes.count > 0 ) ||
+        (this->meshGroupStrokesBBox.meshes.count > 0)) {
+        updateAABB(tr);
+        meshDataBBox.update(context, pMin, pMax);
+    } else aabb = {0, 0, 0, 0};
 }
 
 
@@ -450,6 +453,7 @@ void WgRenderDataShape::releaseMeshes(WgContext &context)
     meshGroupShapes.release(context);
     pMin = {FLT_MAX, FLT_MAX};
     pMax = {0.0f, 0.0f};
+    aabb = {0, 0, 0, 0};
     clips.clear();
 }