1 files changed, 74 insertions, 63 deletions

diff --git a/Graphics/Glyph/ExtendedGL/Framebuffers.hs b/Graphics/Glyph/ExtendedGL/Framebuffers.hs
index a6c2891..1de7781 100644
--- a/Graphics/Glyph/ExtendedGL/Framebuffers.hs
+++ b/Graphics/Glyph/ExtendedGL/Framebuffers.hs
@@ -1,109 +1,120 @@
-{-# LANGUAGE ScopedTypeVariables #-}
-{-# LANGUAGE UndecidableInstances #-}
 {-# LANGUAGE FlexibleContexts #-}
 {-# LANGUAGE FlexibleInstances #-}
 {-# LANGUAGE MultiParamTypeClasses #-}
+{-# LANGUAGE ScopedTypeVariables #-}
+{-# LANGUAGE UndecidableInstances #-}
 
 module Graphics.Glyph.ExtendedGL.Framebuffers where
 
-import Graphics.GL.Compatibility30
-import Graphics.GL.Core43
-import qualified Graphics.Rendering.OpenGL as GL
-
-import Graphics.Glyph.ExtendedGL.Base
-
+import Control.Monad
+import Data.StateVar
+import Foreign.C.Types
 import Foreign.Marshal.Alloc
 import Foreign.Ptr
 import Foreign.Storable
-import Foreign.C.Types
-
-import Data.StateVar
-import Control.Monad
-
+import Graphics.GL.Compatibility30
+import Graphics.GL.Core43
+import Graphics.Glyph.ExtendedGL.Base
+import qualified Graphics.Rendering.OpenGL as GL
 import Unsafe.Coerce
 
-
-class (
-    HasParamOfType GLuint FramebufferParameter a,
+class
+  ( HasParamOfType GLuint FramebufferParameter a,
     HasIntegerParam GLenum a,
     IsGenerable a,
-    IsBindable a, IsWrappedPrimitive GLuint a) => IsFramebuffer a where
-    
-    -- this function MUST discard the argument
-    getType :: a -> GLenum
+    IsBindable a,
+    IsWrappedPrimitive GLuint a
+  ) =>
+  IsFramebuffer a
+  where
+  -- this function MUST discard the argument
+  getType :: a -> GLenum
 
 framebufferBasicParameteri :: (IsFramebuffer a) => GLenum -> a -> GLenum -> SettableStateVar GLuint
 framebufferBasicParameteri typ fb enum =
-    makeSettableStateVar (\value -> do
+  makeSettableStateVar
+    ( \value -> do
         bind fb
-        glFramebufferParameteri typ enum $ fromIntegral value)
+        glFramebufferParameteri typ enum $ fromIntegral value
+    )
 
 data Renderbuffer = Renderbuffer GLuint
+
 instance IsWrappedPrimitive GLuint Renderbuffer where
-    unwrap (Renderbuffer x) = x
+  unwrap (Renderbuffer x) = x
+
 instance IsGenerable Renderbuffer where
-    generate = alloca $ \ptr -> do
-        glGenRenderbuffers 1 ptr
-        liftM Renderbuffer $ peek ptr
+  generate = alloca $ \ptr -> do
+    glGenRenderbuffers 1 ptr
+    liftM Renderbuffer $ peek ptr
+
 instance IsBindable Renderbuffer where
-    bind = glBindRenderbuffer GL_RENDERBUFFER . unwrap
+  bind = glBindRenderbuffer GL_RENDERBUFFER . unwrap
+
+data RenderbufferArgument
+  = DepthAttachment
 
-data RenderbufferArgument =
-        DepthAttachment
 instance IsWrappedPrimitive GLenum RenderbufferArgument where
-    unwrap DepthAttachment = GL_DEPTH_ATTACHMENT
+  unwrap DepthAttachment = GL_DEPTH_ATTACHMENT
 
 renderBufferStorageRaw :: (IsGLEnumMarshallable a, IsGLEnumMarshallable b) => a -> b -> Int -> Int -> IO ()
-renderBufferStorageRaw typ enum w h = glRenderbufferStorage (toGLEnum typ) 
-                                    (toGLEnum enum) (fromIntegral w) (fromIntegral h)
-renderBufferStorage :: (IsGLEnumMarshallable a) => Renderbuffer -> SettableStateVar (a,Int,Int)
-renderBufferStorage buffer = makeSettableStateVar $ \(en,w,h) -> do
-                                bind buffer
-                                renderBufferStorageRaw GL_RENDERBUFFER en w h
-
-frameBufferRenderBuffer :: forall a b. (IsFramebuffer a,IsGLEnumMarshallable b) => Renderbuffer -> b -> IO a
+renderBufferStorageRaw typ enum w h =
+  glRenderbufferStorage
+    (toGLEnum typ)
+    (toGLEnum enum)
+    (fromIntegral w)
+    (fromIntegral h)
+
+renderBufferStorage :: (IsGLEnumMarshallable a) => Renderbuffer -> SettableStateVar (a, Int, Int)
+renderBufferStorage buffer = makeSettableStateVar $ \(en, w, h) -> do
+  bind buffer
+  renderBufferStorageRaw GL_RENDERBUFFER en w h
+
+frameBufferRenderBuffer :: forall a b. (IsFramebuffer a, IsGLEnumMarshallable b) => Renderbuffer -> b -> IO a
 frameBufferRenderBuffer rb e = do
-    let enum :: GLenum
-        enum = getType test
-        unw :: GLuint
-        unw = unwrap rb
-    bind rb
-    glFramebufferRenderbuffer enum (toGLEnum e) GL_RENDERBUFFER (unwrap rb)
-    return $ wrap unw
-    where
-        test :: a
-        test = coerced
+  let enum :: GLenum
+      enum = getType test
+      unw :: GLuint
+      unw = unwrap rb
+  bind rb
+  glFramebufferRenderbuffer enum (toGLEnum e) GL_RENDERBUFFER (unwrap rb)
+  return $ wrap unw
+  where
+    test :: a
+    test = coerced
 
 data DrawFramebuffer = DrawFramebuffer GLuint
+
 data FramebufferParameter = DefaultWidth | DefaultHeight
 
 instance IsWrappedPrimitive GLenum FramebufferParameter where
-    unwrap p = case p of
-        DefaultWidth -> GL_FRAMEBUFFER_DEFAULT_WIDTH
-        DefaultHeight -> GL_FRAMEBUFFER_DEFAULT_HEIGHT
-    wrap x | x == GL_FRAMEBUFFER_DEFAULT_WIDTH = DefaultWidth
-           | x == GL_FRAMEBUFFER_DEFAULT_HEIGHT = DefaultHeight
-           | otherwise = undefined
+  unwrap p = case p of
+    DefaultWidth -> GL_FRAMEBUFFER_DEFAULT_WIDTH
+    DefaultHeight -> GL_FRAMEBUFFER_DEFAULT_HEIGHT
+  wrap x
+    | x == GL_FRAMEBUFFER_DEFAULT_WIDTH = DefaultWidth
+    | x == GL_FRAMEBUFFER_DEFAULT_HEIGHT = DefaultHeight
+    | otherwise = undefined
 
 instance HasIntegerParam GLenum DrawFramebuffer where
-    parami p fb = framebufferBasicParameteri GL_DRAW_FRAMEBUFFER fb p
+  parami p fb = framebufferBasicParameteri GL_DRAW_FRAMEBUFFER fb p
 
 {- Has parameters of type GLuint which are acessable by the data FramebufferParameter for
  - the type DrawFramebuffer -}
 instance HasParamOfType GLuint FramebufferParameter DrawFramebuffer where
-    param = parami . toGLEnum
+  param = parami . toGLEnum
 
 instance IsGenerable DrawFramebuffer where
-    generate = alloca $ \ptr -> do
-        glGenFramebuffers 1 ptr
-        liftM DrawFramebuffer $ peek ptr
+  generate = alloca $ \ptr -> do
+    glGenFramebuffers 1 ptr
+    liftM DrawFramebuffer $ peek ptr
 
 instance IsBindable DrawFramebuffer where
-    bind (DrawFramebuffer fb) = glBindFramebuffer GL_DRAW_FRAMEBUFFER fb
+  bind (DrawFramebuffer fb) = glBindFramebuffer GL_DRAW_FRAMEBUFFER fb
 
 instance IsWrappedPrimitive GLuint DrawFramebuffer where
-    unwrap (DrawFramebuffer fb) = fb
-    wrap = DrawFramebuffer
+  unwrap (DrawFramebuffer fb) = fb
+  wrap = DrawFramebuffer
 
 instance IsFramebuffer DrawFramebuffer where
-    getType _ = GL_DRAW_FRAMEBUFFER
+  getType _ = GL_DRAW_FRAMEBUFFER