Copyright	(c) Sven Panne 2002-2016
License	BSD3
Maintainer	Sven Panne <svenpanne@gmail.com>
Stability	stable
Portability	portable
Safe Haskell	None
Language	Haskell2010

Graphics.Rendering.OpenGL.GLU.Errors

Description

This module corresponds to section 2.5 (GL Errors) of the OpenGL 2.1 specs and chapter 8 (Errors) of the GLU specs, offering a generalized view of errors in GL and GLU.

Synopsis

Documentation

data Error Source #

GL/GLU errors consist of a general error category and a description of what went wrong.

Constructors

Error ErrorCategory String

Instances

Eq Error Source #
Methods (==) :: Error -> Error -> Bool # (/=) :: Error -> Error -> Bool #
Ord Error Source #
Methods compare :: Error -> Error -> Ordering # (<) :: Error -> Error -> Bool # (<=) :: Error -> Error -> Bool # (>) :: Error -> Error -> Bool # (>=) :: Error -> Error -> Bool # max :: Error -> Error -> Error # min :: Error -> Error -> Error #
Show Error Source #
Methods showsPrec :: Int -> Error -> ShowS # show :: Error -> String # showList :: [Error] -> ShowS #

data ErrorCategory Source #

General GL/GLU error categories

Constructors

ContextLost
InvalidEnum
InvalidValue
InvalidOperation
InvalidFramebufferOperation
OutOfMemory
StackOverflow
StackUnderflow
TableTooLarge
TesselatorError
NURBSError

Instances

Eq ErrorCategory Source #
Methods (==) :: ErrorCategory -> ErrorCategory -> Bool # (/=) :: ErrorCategory -> ErrorCategory -> Bool #
Ord ErrorCategory Source #
Methods compare :: ErrorCategory -> ErrorCategory -> Ordering # (<) :: ErrorCategory -> ErrorCategory -> Bool # (<=) :: ErrorCategory -> ErrorCategory -> Bool # (>) :: ErrorCategory -> ErrorCategory -> Bool # (>=) :: ErrorCategory -> ErrorCategory -> Bool # max :: ErrorCategory -> ErrorCategory -> ErrorCategory # min :: ErrorCategory -> ErrorCategory -> ErrorCategory #
Show ErrorCategory Source #
Methods showsPrec :: Int -> ErrorCategory -> ShowS # show :: ErrorCategory -> String # showList :: [ErrorCategory] -> ShowS #

errors :: GettableStateVar [Error] Source #

When an error occurs, it is recorded in this state variable and no further errors are recorded. Reading errors returns the currently recorded errors (there may be more than one due to a possibly distributed implementation) and resets the state variable to [], re-enabling the recording of future errors. The value [] means that there has been no detectable error since the last time errors was read, or since the GL was initialized.