OpenGL-2.9.2.0: A binding for the OpenGL graphics system

Copyright | (c) Sven Panne 2006-2013
License | BSD3
Maintainer | Sven Panne <svenpanne@gmail.com>
Stability | stable
Portability | portable
Safe Haskell | None
Language | Haskell98

Graphics.Rendering.OpenGL.GL.Shaders.ProgramObjects

Contents

- Program Objects
- Fragment Data

Description

This module corresponds to section 7.3 (Program Objects) of the OpenGL 4.4 spec.

Synopsis

- data Program
- createProgram :: IO Program
- programDeleteStatus :: Program -> GettableStateVar Bool
- attachShader :: Program -> Shader -> IO ()
- detachShader :: Program -> Shader -> IO ()
- attachedShaders :: Program -> StateVar [Shader]
- linkProgram :: Program -> IO ()
- linkStatus :: Program -> GettableStateVar Bool
- validateProgram :: Program -> IO ()
- validateStatus :: Program -> GettableStateVar Bool
- programInfoLog :: Program -> GettableStateVar String
- currentProgram :: StateVar (Maybe Program)
- programSeparable :: Program -> StateVar Bool
- programBinaryRetrievableHint :: Program -> StateVar Bool
- bindFragDataLocation :: Program -> String -> SettableStateVar DrawBufferIndex
- getFragDataLocation :: Program -> String -> IO (Maybe DrawBufferIndex)

# Program Objects

data Program

Instances

Eq Program |
Ord Program |
Show Program |
ObjectName Program |

createProgram :: IO Program

programDeleteStatus :: Program -> GettableStateVar Bool

attachShader :: Program -> Shader -> IO ()

detachShader :: Program -> Shader -> IO ()

attachedShaders :: Program -> StateVar [Shader]

linkProgram :: Program -> IO ()

linkStatus :: Program -> GettableStateVar Bool

validateProgram :: Program -> IO ()

validateStatus :: Program -> GettableStateVar Bool

programInfoLog :: Program -> GettableStateVar String

currentProgram :: StateVar (Maybe Program)

programSeparable :: Program -> StateVar Bool

programBinaryRetrievableHint :: Program -> StateVar Bool

# Fragment Data

bindFragDataLocation :: Program -> String -> SettableStateVar DrawBufferIndex

`bindFragDataLocation` binds a varying variable, specified by program and name, to a drawbuffer. The effects only take place after succesfull linking of the program. invalid arguments and conditions are - an index larger than maxDrawBufferIndex - names starting with `gl_` linking failure will ocure when - one of the arguments was invalid - more than one varying varuable name is bound to the same index It's not an error to specify unused variables, those will be ingored.

getFragDataLocation :: Program -> String -> IO (Maybe DrawBufferIndex)

query the binding of a given variable, specified by program and name. The program has to be linked. The result is Nothing if an error occures or the name is not a name of a varying variable. If the program hasn't been linked an `InvalidOperation` error is generated.