module Renderer where import SDL (($=)) import qualified Graphics.Rendering.OpenGL as GL import Foreign initRenderData = do quadVAO <- GL.genObjectName quadVBO <- GL.genObjectName GL.bindBuffer GL.ArrayBuffer $= Just quadVBO withArray rawVertices $ \ptr -> GL.bufferData GL.ArrayBuffer $= ( fromIntegral $ length rawVertices * sizeOf (0 :: Float) , ptr , GL.StaticDraw ) GL.bindVertexArrayObject $= Just quadVAO GL.vertexAttribArray (GL.AttribLocation 0) $= GL.Enabled GL.vertexAttribPointer (GL.AttribLocation 0) $= ( GL.ToFloat , GL.VertexArrayDescriptor 4 GL.Float 0 (plusPtr nullPtr 0) ) GL.bindBuffer GL.ArrayBuffer $= Nothing GL.bindVertexArrayObject $= Nothing where rawVertices :: [Float] rawVertices = [ 0, 1, 0, 0 , 1, 0, 1, 0 , 0, 0, 0, 0 , 0, 1, 0, 1 , 1, 1, 1, 1 , 1, 0, 1, 0 ]