diff --git a/gpuv/src/main/java/com/daasuu/gpuv/egl/GlFrameBufferObjectRenderer.java b/gpuv/src/main/java/com/daasuu/gpuv/egl/GlFrameBufferObjectRenderer.java
index 3a069ac..1ff39bc 100644
--- a/gpuv/src/main/java/com/daasuu/gpuv/egl/GlFrameBufferObjectRenderer.java
+++ b/gpuv/src/main/java/com/daasuu/gpuv/egl/GlFrameBufferObjectRenderer.java
@@ -2,6 +2,7 @@
 
 import android.opengl.GLES20;
 import android.opengl.GLSurfaceView;
+import android.util.Log;
 
 import com.daasuu.gpuv.egl.filter.GlFilter;
 
@@ -60,6 +61,7 @@ public final void onDrawFrame(final GL10 gl) {
         GLES20.glBindFramebuffer(GL_FRAMEBUFFER, 0);
 
         GLES20.glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+        GLES20.glViewport(0, 0, framebufferObject.getWidth(), framebufferObject.getHeight());
         normalShader.draw(framebufferObject.getTexName(), null);
 
     }