Revert "Continue transfer to mutable vectors"

This reverts commit 1f2f5431c0.

src/Shader.hs

@@ -12,7 +12,7 @@ module Shader
 import Shader.Data
 import Shader.Parameters
 import Shader.ExtraPrimitive
---import Shader.Poke
+import Shader.Poke
 --import Layers
 --import MatrixHelper
 
@@ -82,15 +82,15 @@ drawShaderLay l fs i = do
 
 drawShaderLay' :: Int -> UMV.MVector (PrimState IO) Int -> Int -> VShader -> IO ()
 {-# INLINE drawShaderLay' #-}
-drawShaderLay' theLayer shaderOffsetsVector shaderIndex fs = do 
-    i <- UMV.read shaderOffsetsVector shaderIndex
+drawShaderLay' l countsVector index fs = do 
+    i <- UMV.read countsVector index
     currentProgram $= Just (_vshaderProgram fs)
     bindVertexArrayObject $= Just (_vao $ _vshaderVAO fs)
     case _vshaderTexture fs of 
         Just ShaderTexture{_textureObject = txo}
             -> textureBinding Texture2D $= Just txo
         _   -> return ()
-    glDrawArrays (marshalEPrimitiveMode $ _vshaderDrawPrimitive fs) (fromIntegral $ theLayer*numSubElements) (fromIntegral i)
+    glDrawArrays (marshalEPrimitiveMode $ _vshaderDrawPrimitive fs) (fromIntegral $ l*numSubElements) (fromIntegral i)
 
 drawShader :: FullShader -> Int -> IO ()
 {-# INLINE drawShader #-}