diff --git a/ghcidOutput b/ghcidOutput
index 091ac7c87..ebf654864 100644
--- a/ghcidOutput
+++ b/ghcidOutput
@@ -1 +1 @@
-All good (607 modules, at 21:11:41)
+All good (607 modules, at 21:29:51)
diff --git a/src/Picture/Arc.hs b/src/Picture/Arc.hs
index da52ebe37..408611b99 100644
--- a/src/Picture/Arc.hs
+++ b/src/Picture/Arc.hs
@@ -49,4 +49,4 @@ arcPart startA sw sc endA ew ec r centercol =
     (V2 xa ya) = rotateV startA (V2 r 0)
     (V2 xb yb) = rotateV (0.5 * (startA + endA)) (V2 (r * sqrt 2) 0)
     (V2 xc yc) = rotateV endA (V2 r 0)
-    f (pos, col, V3 a b c) = Verx pos col [a, b, c] BottomLayer arcNum
+    f (pos, col, V3 a b c) = Verx pos col [a, b, c] BottomLayer ArcShad
diff --git a/src/Picture/Base.hs b/src/Picture/Base.hs
index 56745cf31..a833688c6 100644
--- a/src/Picture/Base.hs
+++ b/src/Picture/Base.hs
@@ -73,13 +73,13 @@ polygon :: [Point2] -> Picture
 {-# INLINE polygon #-}
 polygon = map f . polyToTris
   where
-    f (V2 x y) = Verx (V3 x y 0) black [] BottomLayer polyNum
+    f (V2 x y) = Verx (V3 x y 0) black [] BottomLayer PolyShad
 
 polygonCol :: [(Point2, RGBA)] -> Picture
 {-# INLINE polygonCol #-}
 polygonCol = polyToTris . map f
   where
-    f (V2 x y, col) = Verx (V3 x y 0) col [] BottomLayer polyNum
+    f (V2 x y, col) = Verx (V3 x y 0) col [] BottomLayer PolyShad
 
 poly3 :: [Point3] -> Picture
 {-# INLINE poly3 #-}
@@ -89,7 +89,7 @@ poly3Col :: [(Point3, RGBA)] -> Picture
 {-# INLINE poly3Col #-}
 poly3Col = map f . polyToTris
   where
-    f (pos, col) = Verx pos col [] BottomLayer polyNum
+    f (pos, col) = Verx pos col [] BottomLayer PolyShad
 
 ---- given a one and two zeros of a linear function over x and y,
 ---- determine the function
@@ -175,7 +175,7 @@ circleSolidCol colC colE r =
         , (V3 r (- r) 0, black)
         ]
   where
-    f (pos, col) = Verx pos col [] BottomLayer ellNum
+    f (pos, col) = Verx pos col [] BottomLayer EllShad
 
 circle :: Float -> Picture
 {-# INLINE circle #-}
@@ -221,7 +221,7 @@ drawText :: Float -> String -> [Verx]
 {-# INLINE drawText #-}
 drawText gap = map f . stringToList gap
   where
-    f (pos, col, V3 a b c) = Verx pos col [a, b, c, 1] BottomLayer textNum
+    f (pos, col, V3 a b c) = Verx pos col [a, b, c, 1] BottomLayer TextShad
 
 line :: [Point2] -> Picture
 {-# INLINE line #-}
diff --git a/src/Picture/Data.hs b/src/Picture/Data.hs
index 223c2157a..a2a71430e 100644
--- a/src/Picture/Data.hs
+++ b/src/Picture/Data.hs
@@ -28,9 +28,6 @@ data Layer
     | FixedCoordLayer
     deriving (Eq, Ord, Enum, Bounded, Show, Read) --Generic, Flat)
 
-layerNum :: Layer -> Int
-layerNum = fromEnum
-
 numLayers :: Int
 numLayers = length [minBound :: Layer .. maxBound]
 
@@ -44,53 +41,31 @@ data ShadNum
 numShads :: Int
 numShads = length [minBound :: ShadNum .. maxBound]
 
-_unShadNum :: ShadNum -> Int
-_unShadNum = fromEnum
-
-toShadNum :: Int -> ShadNum
-toShadNum = toEnum
-
-polyNum, textNum, arcNum, ellNum :: ShadNum
-{-# INLINE polyNum #-}
-{-# INLINE textNum #-}
-{-# INLINE arcNum #-}
-{-# INLINE ellNum #-}
-polyNum = toShadNum 0
-textNum = toShadNum 1
-arcNum = toShadNum 2
-ellNum = toShadNum 3
-
 type Picture = [Verx]
 
-flatV2 :: V2 a -> [a]
-flatV2 (V2 x y) = [x, y]
-
-flatV3 :: V3 a -> [a]
-flatV3 (V3 x y z) = [x, y, z]
-
-flatV4 :: V4 a -> [a]
-flatV4 (V4 x y z w) = [x, y, z, w]
-
-{-# INLINE flatV2 #-}
-
-{-# INLINE flatV3 #-}
-
-{-# INLINE flatV4 #-}
+--flatV2 :: V2 a -> [a]
+--{-# INLINE flatV2 #-}
+--flatV2 (V2 x y) = [x, y]
+--
+--flatV3 :: V3 a -> [a]
+--{-# INLINE flatV3 #-}
+--flatV3 (V3 x y z) = [x, y, z]
+--
+--flatV4 :: V4 a -> [a]
+--{-# INLINE flatV4 #-}
+--flatV4 (V4 x y z w) = [x, y, z, w]
 
 tflat2 :: (a, a) -> [a]
+{-# INLINE tflat2 #-}
 tflat2 (x, y) = [x, y]
 
 tflat3 :: (a, a, a) -> [a]
+{-# INLINE tflat3 #-}
 tflat3 (x, y, z) = [x, y, z]
 
 tflat4 :: (a, a, a, a) -> [a]
-tflat4 (x, y, z, w) = [x, y, z, w]
-
-{-# INLINE tflat2 #-}
-
-{-# INLINE tflat3 #-}
-
 {-# INLINE tflat4 #-}
+tflat4 (x, y, z, w) = [x, y, z, w]
 
 makeLenses ''Verx
 deriveJSON defaultOptions ''Layer
diff --git a/src/Picture/Test.hs b/src/Picture/Test.hs
index a8ced258c..a90da3a37 100644
--- a/src/Picture/Test.hs
+++ b/src/Picture/Test.hs
@@ -46,4 +46,4 @@ arcTest' startA sw sc endA ew ec r centercol =
     (V2 xa ya) = rotateV startA (V2 r 0)
     (V2 xb yb) = rotateV (0.5 * (startA + endA)) (V2 (r * sqrt 2) 0)
     (V2 xc yc) = rotateV endA (V2 r 0)
-    f (pos, col, V3 a b c) = Verx pos col [a, b, c] BottomLayer arcNum
+    f (pos, col, V3 a b c) = Verx pos col [a, b, c] BottomLayer ArcShad
diff --git a/src/Picture/Text.hs b/src/Picture/Text.hs
index 266de3868..dc9f54e2d 100644
--- a/src/Picture/Text.hs
+++ b/src/Picture/Text.hs
@@ -6,7 +6,7 @@ textGrad :: Color -> Color -> String -> Picture
 {-# INLINE textGrad #-}
 textGrad topc botc = map f . stringToListGrad topc botc
   where
-    f (pos, col, V2 a b) = Verx pos col [a, b] BottomLayer textNum
+    f (pos, col, V2 a b) = Verx pos col [a, b] BottomLayer TextShad
 
 -- no premature optimisation, consider changing to use texture arrays
 stringToListGrad :: Color -> Color -> String -> [(Point3, Point4, Point2)]
diff --git a/src/Polyhedra.hs b/src/Polyhedra.hs
index 8a8ec4f0e..52d954fd4 100644
--- a/src/Polyhedra.hs
+++ b/src/Polyhedra.hs
@@ -124,7 +124,7 @@ polyToPics = map helpPoly3D . _pyFaces
 helpPoly3D :: [(Point3, Point4)] -> Picture
 helpPoly3D = picFormat . map f . polyToTris
   where
-    f (pos,col) = Verx pos col [] BottomLayer polyNum
+    f (pos,col) = Verx pos col [] BottomLayer PolyShad
 
 polysToPic :: [Polyhedra] -> Picture
 polysToPic = fold . concatMap polyToPics
diff --git a/src/Render.hs b/src/Render.hs
index d26380d75..292d804e5 100644
--- a/src/Render.hs
+++ b/src/Render.hs
@@ -239,7 +239,7 @@ renderLayer layer shads counts = do
     let layerCounts = UMV.slice (ln * numLayers) 6 counts
     MV.imapM_ (drawShaderLay ln layerCounts) shads
   where
-    ln = layerNum layer
+    ln = fromEnum layer
 
 bindFBO :: FBO -> IO ()
 bindFBO fb =
diff --git a/src/Shader/Poke.hs b/src/Shader/Poke.hs
index 7c8870883..f99b80937 100644
--- a/src/Shader/Poke.hs
+++ b/src/Shader/Poke.hs
@@ -45,7 +45,7 @@ pokeVerx vbos offsets Verx{_vxPos = thePos, _vxCol = theCol, _vxExt = ext, _vxSh
     pokeArrayOff thePtr 7 ext
     UMV.unsafeModify offsets (+ 1) sn
   where
-    sn = _unShadNum shadnum
+    sn = fromEnum shadnum
 
 pokeWallsWindows ::
     Ptr Float ->
@@ -497,10 +497,10 @@ pokeLayVerx vbos counts vx = do
     pokeArrayOff thePtr 7 (_vxExt vx)
     UMV.unsafeModify counts (+ 1) vecPos
   where
-    sn = _unShadNum shadnum
+    sn = fromEnum shadnum
     shadnum = _vxShadNum vx
     vecPos = theLayer * numLayers + sn
-    theLayer = layerNum $ _vxLayer vx
+    theLayer = fromEnum $ _vxLayer vx
     thePos = _vxPos vx
     theCol = _vxCol vx
     layOff = theLayer * numSubElements