Start implementing ceiling stencil shader

src/Data/Preload/Render.hs

@@ -15,6 +15,7 @@ data RenderData = RenderData
     , _lightingLineShadowShader :: Shader
     , _lightingCapShader :: Shader
     , _lightingTextureShader :: Shader
+    , _ceilingStencilShader :: Shader
     , _alphaDivideShader :: Shader
     , _windowShader :: Shader
     , _fullscreenShader :: Shader