diff --git a/lightpreview/glview.cpp b/lightpreview/glview.cpp
index db4ec03f..ddc53441 100644
--- a/lightpreview/glview.cpp
+++ b/lightpreview/glview.cpp
@@ -110,6 +110,10 @@ void GLView::initializeGL()
     m_program_mvp_location = m_program->uniformLocation("MVP");
     m_program_texture_sampler_location = m_program->uniformLocation("texture_sampler");
     m_vao.create();
+
+    glEnable(GL_DEPTH_TEST);
+    glEnable(GL_CULL_FACE);
+    glFrontFace(GL_CW);
 }
 
 void GLView::paintGL()