error +opengl

errors :: GettableStateVar [Error]
OpenGL Graphics.Rendering.OpenGL.GLU.Errors
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.
Error :: ErrorCategory -> String -> Error
OpenGL Graphics.Rendering.OpenGL.GLU.Errors
data Error
OpenGL Graphics.Rendering.OpenGL.GLU.Errors
GL/GLU errors consist of a general error category and a description of what went wrong.
data ErrorCategory
OpenGL Graphics.Rendering.OpenGL.GLU.Errors
General GL/GLU error categories
module Graphics.Rendering.OpenGL.GLU.Errors
OpenGL Graphics.Rendering.OpenGL.GLU.Errors
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.
checkForNURBSError :: NURBSObj -> IO a -> IO a
OpenGL Graphics.Rendering.OpenGL.GLU.NURBS
NURBSError :: ErrorCategory
OpenGL Graphics.Rendering.OpenGL.GLU.Errors
ObjectParametricError :: GLfloat -> SamplingMethod
OpenGL Graphics.Rendering.OpenGL.GLU.NURBS
ParametricError :: GLfloat -> SamplingMethod
OpenGL Graphics.Rendering.OpenGL.GLU.NURBS
TesselatorError :: ErrorCategory
OpenGL Graphics.Rendering.OpenGL.GLU.Errors