    {-# LANGUAGE ForeignFunctionInterface, CPP #-}
    --------------------------------------------------------------------------------
    -- |
    -- Module      :  Graphics.Rendering.OpenGL.Raw.EXT.IndexFunc
    -- Copyright   :  (c) Sven Panne 2009
    -- License     :  BSD-style (see the file LICENSE)
    --
    -- Maintainer  :  sven.panne@aedion.de
    -- Stability   :  stable
    -- Portability :  portable
    --
    -- All raw functions and tokens from the EXT_index_func extension, see
    -- <http://www.opengl.org/registry/specs/EXT/index_func.txt>.
    --
    --------------------------------------------------------------------------------

    module Graphics.Rendering.OpenGL.Raw.EXT.IndexFunc (
       -- * Functions
       glIndexFunc,
       -- * Tokens
       gl_INDEX_TEST,
       gl_INDEX_TEST_FUNC,
       gl_INDEX_TEST_REF
    ) where

    import Foreign.C.Types
    import Graphics.Rendering.OpenGL.Raw.Core32
    import Graphics.Rendering.OpenGL.Raw.Extensions

    #include "HsOpenGLRaw.h"

    extensionNameString :: String
    extensionNameString = "GL_EXT_index_func"

    EXTENSION_ENTRY(glIndexFunc,GLenum -> GLfloat -> IO ())

    gl_INDEX_TEST :: GLenum
    gl_INDEX_TEST = 0x81B5

    gl_INDEX_TEST_FUNC :: GLenum
    gl_INDEX_TEST_FUNC = 0x81B6

    gl_INDEX_TEST_REF :: GLenum
    gl_INDEX_TEST_REF = 0x81B7