Fix stroke mesh multiple release issue.

Yuncong Zhang · Yuncong Zhang · commit 469afccaf0b5 · 2019-07-30T13:39:50.000+08:00
diff --git a/Runtime/ui/renderer/cmdbufferCanvas/rendering/canvas_impl.cs b/Runtime/ui/renderer/cmdbufferCanvas/rendering/canvas_impl.cs
@@ -549,7 +549,7 @@ void _drawPathDrawMeshCallback(uiPaint p, uiMeshMesh fillMesh, uiMeshMesh stroke
 
             if (strokeMesh != null) {
                 layer.draws.Add(CanvasShader.strokeAlpha(layer, p, alpha, strokeMult, strokeMesh));
-                layer.draws.Add(CanvasShader.stroke1(layer, strokeMesh));
+                layer.draws.Add(CanvasShader.stroke1(layer, strokeMesh.duplicate()));
             }
         }
 

Original file line number	Diff line number	Diff line change
`@@ -549,7 +549,7 @@ void _drawPathDrawMeshCallback(uiPaint p, uiMeshMesh fillMesh, uiMeshMesh stroke`
`549`	`549`
`550`	`550`	`if (strokeMesh != null) {`
`551`	`551`	`layer.draws.Add(CanvasShader.strokeAlpha(layer, p, alpha, strokeMult, strokeMesh));`
`552`		`- layer.draws.Add(CanvasShader.stroke1(layer, strokeMesh));`
	`552`	`+ layer.draws.Add(CanvasShader.stroke1(layer, strokeMesh.duplicate()));`
`553`	`553`	`}`
`554`	`554`	`}`
`555`	`555`