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| In OpenGL, the function '''glGetError()''' tells you if an error has occurred in a program; for example, if you pass an invalid value to a function. When an error occurs, an error code is saved by the implementation. This error code will be the return value of '''glGetError()''' next time it is called.
| | #REDIRECT [[OpenGL Error#Meaning of errors]] |
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| '''Error Codes''' returned by <code>glGetError()</code>:
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| {|
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| ! Error Code !! Description
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| | GL_INVALID_ENUM || Given when an enumeration parameter contains an enum that is not allowed for that function
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| | GL_INVALID_VALUE || Given when a numerical parameter does not conform to the range requirements that the function places upon it
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| | GL_INVALID_OPERATION || Given when the function in question cannot be executed because of state that has been set in the context
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| | GL_OUT_OF_MEMORY || Given when performing an operation that can allocate memory, when the memory in question cannot be allocated
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| | GL_INVALID_FRAMEBUFFER_OPERATION || (See note below)
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| | GL_STACK_OVERFLOW* || Given when a stack pushing operation causes a stack to overflow the limit of that stack's size.
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| | GL_STACK_UNDERFLOW* || Given when a stack popping operation is given when the stack is already at its lowest point.
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| | GL_TABLE_TOO_LARGE || This error code is a part of the GL_ARB_imaging extention
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| |}
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| Error codes marked with an asterisk are deprecated and can only be returned when using deprecated functionality.
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| [[Framebuffer Objects]] have their own error codes for codes for testing framebuffer completeness. The meaning of these codes is defined in the [[Framebuffer Objects#Framebuffer Completeness|section on framebuffer completeness]].
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