diff --git a/src/renderer/gl_engine/tvgGlRenderTask.cpp b/src/renderer/gl_engine/tvgGlRenderTask.cpp
index c978febf..9cd206e2 100644
--- a/src/renderer/gl_engine/tvgGlRenderTask.cpp
+++ b/src/renderer/gl_engine/tvgGlRenderTask.cpp
@@ -195,23 +195,20 @@ void GlComposeTask::run()
 {
     GL_CHECK(glBindFramebuffer(GL_FRAMEBUFFER, getSelfFbo()));
 
-    // clear this fbo
-    if (mClearBuffer) {
-        // we must clear all area of fbo
-        GL_CHECK(glViewport(0, 0, mFbo->getWidth(), mFbo->getHeight()));
-        GL_CHECK(glScissor(0, 0, mFbo->getWidth(), mFbo->getHeight()));
-        GL_CHECK(glClearColor(0, 0, 0, 0));
-        GL_CHECK(glClearStencil(0));
-    #ifdef THORVG_GL_TARGET_GLES
-        GL_CHECK(glClearDepthf(0.0));
-    #else
-        GL_CHECK(glClearDepth(0.0));
-    #endif
-        GL_CHECK(glDepthMask(1));
+    // we must clear all area of fbo
+    GL_CHECK(glViewport(0, 0, mFbo->getWidth(), mFbo->getHeight()));
+    GL_CHECK(glScissor(0, 0, mFbo->getWidth(), mFbo->getHeight()));
+    GL_CHECK(glClearColor(0, 0, 0, 0));
+    GL_CHECK(glClearStencil(0));
+#ifdef THORVG_GL_TARGET_GLES
+    GL_CHECK(glClearDepthf(0.0));
+#else
+    GL_CHECK(glClearDepth(0.0));
+#endif
+    GL_CHECK(glDepthMask(1));
 
-        GL_CHECK(glClear(GL_COLOR_BUFFER_BIT | GL_STENCIL_BUFFER_BIT | GL_DEPTH_BUFFER_BIT));
-        GL_CHECK(glDepthMask(0));
-    }
+    GL_CHECK(glClear(GL_COLOR_BUFFER_BIT | GL_STENCIL_BUFFER_BIT | GL_DEPTH_BUFFER_BIT));
+    GL_CHECK(glDepthMask(0));
 
     GL_CHECK(glViewport(0, 0, mRenderWidth, mRenderHeight));
     GL_CHECK(glScissor(0, 0, mRenderWidth, mRenderHeight));
diff --git a/src/renderer/gl_engine/tvgGlRenderer.cpp b/src/renderer/gl_engine/tvgGlRenderer.cpp
index c9148145..8a2db298 100644
--- a/src/renderer/gl_engine/tvgGlRenderer.cpp
+++ b/src/renderer/gl_engine/tvgGlRenderer.cpp
@@ -853,6 +853,9 @@ bool GlRenderer::sync()
 
     clearDisposes();
 
+    // Reset clear buffer flag to default (false) after use.    
+    mClearBuffer = false; 
+
     delete task;
 
     return true;
diff --git a/src/renderer/gl_engine/tvgGlRenderer.h b/src/renderer/gl_engine/tvgGlRenderer.h
index 7ab1e901..1f29c5fa 100644
--- a/src/renderer/gl_engine/tvgGlRenderer.h
+++ b/src/renderer/gl_engine/tvgGlRenderer.h
@@ -153,7 +153,7 @@ private:
     } mDisposed;
 
     BlendMethod mBlendMethod = BlendMethod::Normal;
-    bool mClearBuffer = true;  //FIXME: clear buffer should be optional (default is false)
+    bool mClearBuffer = false;
 };
 
 #endif /* _TVG_GL_RENDERER_H_ */