Upload wall geometry once per frame (can improve for fixed geometry)

src/Shader/Compile.hs

@@ -3,6 +3,7 @@ module Shader.Compile
     , makeShaderUsingShaderVAO
     , makeSourcedShader
     , setupVAO
+    , setupVertexAttribPointer 
     ) where
 import Shader.Data
 import Shader.Parameters