diff --git a/src/renderer/wg_engine/tvgWgCompositor.cpp b/src/renderer/wg_engine/tvgWgCompositor.cpp
index 98107c2e..fdf41db3 100755
--- a/src/renderer/wg_engine/tvgWgCompositor.cpp
+++ b/src/renderer/wg_engine/tvgWgCompositor.cpp
@@ -88,7 +88,7 @@ RenderRegion WgCompositor::shrinkRenderRegion(RenderRegion& rect)
 }
 
 
-void WgCompositor::beginRenderPass(WGPUCommandEncoder commandEncoder, WgRenderStorage* target, bool clear)
+void WgCompositor::beginRenderPass(WGPUCommandEncoder commandEncoder, WgRenderStorage* target, bool clear, WGPUColor clearColor)
 {
     assert(commandEncoder);
     assert(target);
@@ -105,6 +105,7 @@ void WgCompositor::beginRenderPass(WGPUCommandEncoder commandEncoder, WgRenderSt
     colorAttachment.loadOp = clear ? WGPULoadOp_Clear : WGPULoadOp_Load,
     colorAttachment.storeOp = WGPUStoreOp_Store;
     colorAttachment.resolveTarget = target->texView;
+    colorAttachment.clearValue = clearColor;
     #ifdef __EMSCRIPTEN__
     colorAttachment.depthSlice = WGPU_DEPTH_SLICE_UNDEFINED;
     #endif
diff --git a/src/renderer/wg_engine/tvgWgCompositor.h b/src/renderer/wg_engine/tvgWgCompositor.h
index 715e8331..0739e276 100755
--- a/src/renderer/wg_engine/tvgWgCompositor.h
+++ b/src/renderer/wg_engine/tvgWgCompositor.h
@@ -67,7 +67,7 @@ public:
     void release(WgContext& context);
 
     // render passes workflow
-    void beginRenderPass(WGPUCommandEncoder encoder, WgRenderStorage* target, bool clear);
+    void beginRenderPass(WGPUCommandEncoder encoder, WgRenderStorage* target, bool clear, WGPUColor clearColor = { 0.0, 0.0, 0.0, 0.0 });
     void endRenderPass();
 
     // render shapes, images and scenes
diff --git a/src/renderer/wg_engine/tvgWgRenderer.cpp b/src/renderer/wg_engine/tvgWgRenderer.cpp
index e6c78fa0..3c9e6cd4 100755
--- a/src/renderer/wg_engine/tvgWgRenderer.cpp
+++ b/src/renderer/wg_engine/tvgWgRenderer.cpp
@@ -368,7 +368,9 @@ bool WgRenderer::beginComposite(RenderCompositor* cmp, MaskMethod method, uint8_
     WgRenderStorage* storage = mRenderStoragePool.allocate(mContext);
     mRenderStorageStack.push(storage);
     // begin newly added render pass
-    mCompositor.beginRenderPass(mCommandEncoder, mRenderStorageStack.last(), true);
+    WGPUColor color{};
+    if ((method == MaskMethod::None) && (opacity != 255)) color = { 1.0, 1.0, 1.0, 0.0 };
+    mCompositor.beginRenderPass(mCommandEncoder, mRenderStorageStack.last(), true, color);
     return true;
 }