HOpenGL Libraries (OpenGL package)ContentsIndex
Graphics.Rendering.OpenGL.GLU.Errors
Portabilityportable
Stabilityprovisional
Maintainersven.panne@aedion.de
Description
This module corresponds to section 2.5 (GL Errors) of the OpenGL 1.5 specs and chapter 8 (Errors) of the GLU specs, offering a generalized view of errors in GL and GLU.
Synopsis
data Error = Error ErrorCategory String
data ErrorCategory
= InvalidEnum
| InvalidValue
| InvalidOperation
| StackOverflow
| StackUnderflow
| OutOfMemory
| TableTooLarge
| TesselatorError
| NURBSError
errors :: GettableStateVar [Error]
Documentation
data Error
GL/GLU errors consist of a general error category and a description of what went wrong.
Constructors
Error ErrorCategory String
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data ErrorCategory
General GL/GLU error categories
Constructors
InvalidEnum
InvalidValue
InvalidOperation
StackOverflow
StackUnderflow
OutOfMemory
TableTooLarge
TesselatorError
NURBSError
show/hide Instances
errors :: GettableStateVar [Error]
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.
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