    {-# LANGUAGE ForeignFunctionInterface, CPP #-}
    --------------------------------------------------------------------------------
    -- |
    -- Module      :  Graphics.Rendering.OpenGL.Raw.NV.TransformFeedback
    -- 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 NV_transform_feedback extension, see
    -- <http://www.opengl.org/registry/specs/NV/transform_feedback.txt>.
    --
    --------------------------------------------------------------------------------

    module Graphics.Rendering.OpenGL.Raw.NV.TransformFeedback (
       -- * Functions
       glBindBufferRange,
       glBindBufferOffset,
       glBindBufferBase,
       glTransformFeedbackAttribs,
       glTransformFeedbackVaryingsNV,
       glBeginTransformFeedback,
       glEndTransformFeedback,
       glGetVaryingLocation,
       glGetActiveVarying,
       glActiveVarying,
       glGetTransformFeedbackVaryingNV,
       glGetIntegerIndexedv,
       glGetBooleanIndexedv,
       -- * Tokens
       gl_TRANSFORM_FEEDBACK_BUFFER,
       gl_TRANSFORM_FEEDBACK_BUFFER_START,
       gl_TRANSFORM_FEEDBACK_BUFFER_SIZE,
       gl_TRANSFORM_FEEDBACK_RECORD,
       gl_TRANSFORM_FEEDBACK_BUFFER_BINDING,
       gl_INTERLEAVED_ATTRIBS,
       gl_SEPARATE_ATTRIBS,
       gl_PRIMITIVES_GENERATED,
       gl_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN,
       gl_RASTERIZER_DISCARD,
       gl_MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS,
       gl_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS,
       gl_MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS,
       gl_TRANSFORM_FEEDBACK_ATTRIBS,
       gl_ACTIVE_VARYINGS,
       gl_ACTIVE_VARYING_MAX_LENGTH,
       gl_TRANSFORM_FEEDBACK_VARYINGS,
       gl_TRANSFORM_FEEDBACK_BUFFER_MODE,
       gl_BACK_PRIMARY_COLOR,
       gl_BACK_SECONDARY_COLOR,
       gl_TEXTURE_COORD,
       gl_CLIP_DISTANCE,
       gl_VERTEX_ID,
       gl_PRIMITIVE_ID,
       gl_GENERIC_ATTRIB,
       gl_POINT_SIZE,
       gl_FOG_COORDINATE,
       gl_SECONDARY_COLOR,
       gl_PRIMARY_COLOR,
       gl_POSITION,
       gl_LAYER,
       gl_UNSIGNED_INT_VEC2,
       gl_UNSIGNED_INT_VEC3,
       gl_UNSIGNED_INT_VEC4
    ) where

    import Foreign.Ptr
    import Graphics.Rendering.OpenGL.Raw.ARB.Compatibility
    import Graphics.Rendering.OpenGL.Raw.Core32
    import Graphics.Rendering.OpenGL.Raw.EXT.DirectStateAccess
    import Graphics.Rendering.OpenGL.Raw.Extensions
    import Graphics.Rendering.OpenGL.Raw.NV.ParameterBufferObject
    import Graphics.Rendering.OpenGL.Raw.NV.RegisterCombiners

    #include "HsOpenGLRaw.h"

    extensionNameString :: String
    extensionNameString = "GL_NV_transform_feedback"

    EXTENSION_ENTRY(glTransformFeedbackAttribs,GLsizei -> Ptr GLint -> GLenum -> IO ())
    EXTENSION_ENTRY(glTransformFeedbackVaryingsNV,GLuint -> GLsizei -> Ptr GLint -> GLenum -> IO ())
    EXTENSION_ENTRY(glGetVaryingLocation,GLuint -> Ptr GLchar -> IO GLint)
    EXTENSION_ENTRY(glGetActiveVarying,GLuint -> GLuint -> GLsizei -> Ptr GLsizei -> Ptr GLsizei -> Ptr GLenum -> Ptr GLchar -> IO ())
    EXTENSION_ENTRY(glActiveVarying,GLuint -> Ptr GLchar -> IO ())
    EXTENSION_ENTRY(glGetTransformFeedbackVaryingNV,GLuint -> GLuint -> Ptr GLint -> IO ())

    gl_TRANSFORM_FEEDBACK_RECORD :: GLenum
    gl_TRANSFORM_FEEDBACK_RECORD = 0x8C86

    gl_TRANSFORM_FEEDBACK_ATTRIBS :: GLenum
    gl_TRANSFORM_FEEDBACK_ATTRIBS = 0x8C7E

    gl_ACTIVE_VARYINGS :: GLenum
    gl_ACTIVE_VARYINGS = 0x8C81

    gl_ACTIVE_VARYING_MAX_LENGTH :: GLenum
    gl_ACTIVE_VARYING_MAX_LENGTH = 0x8C82

    gl_BACK_PRIMARY_COLOR :: GLenum
    gl_BACK_PRIMARY_COLOR = 0x8C77

    gl_BACK_SECONDARY_COLOR :: GLenum
    gl_BACK_SECONDARY_COLOR = 0x8C78

    gl_TEXTURE_COORD :: GLenum
    gl_TEXTURE_COORD = 0x8C79

    gl_CLIP_DISTANCE :: GLenum
    gl_CLIP_DISTANCE = 0x8C7A

    gl_VERTEX_ID :: GLenum
    gl_VERTEX_ID = 0x8C7B

    gl_PRIMITIVE_ID :: GLenum
    gl_PRIMITIVE_ID = 0x8C7C

    gl_GENERIC_ATTRIB :: GLenum
    gl_GENERIC_ATTRIB = 0x8C7D

    gl_LAYER :: GLenum
    gl_LAYER = 0x8DAA