Remove compute shaders

src/Preload/Render.hs

@@ -182,15 +182,11 @@ preloadRender = do
         , eslist
         ]
 
-    -- setup compute shader
-    computeshadowshader <- makeSourcedShader "compute/shadow" [GL_COMPUTE_SHADER]
-
     initializeGLState
     putStrLn "Return preload"
     return $
         RenderData
-            { _computeShadowShader = computeshadowshader
-            , _pictureShaders = shadV
+            { _pictureShaders = shadV
             , _shapeShader = shapeshader -- & shaderVAO' .~ shPosColVAO
             , _shapeEBO = shEBO
             , _silhouetteEBO = shedgeebo