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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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| * {{code|GL_INVALID_ENUM}}: Given when an enumeration parameter is not a legal enumeration for that function. This is given only for local problems; if the spec allows the enumeration in certain circumstances, and other parameters or state dictate those circumstances, then GL_INVALID_OPERATION is the result instead.
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| * {{code|GL_INVALID_VALUE}}: Given when a value parameter is not a leval value for that function. This is only given for local problems; if the spec allows the value in certain circumstances, and other parameters or state dictate those circumstances, then GL_INVALID_OPERATION is the result instead.
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| * {{code|GL_INVALID_OPERATION}}: Given when the set of state for a command is not legal for the parameters given to that command. It is also given for commands where combinations of parameters define what the legal parameters are.
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| * {{code|GL_OUT_OF_MEMORY}}: Given when performing an operation that can allocate memory, but the memory cannot be allocated. The results of OpenGL functions that return this error are undefined; it is allowable for partial operations to happen.
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| * {{code|GL_INVALID_FRAMEBUFFER_OPERATION}}: Given when doing anything that would attempt to read from or write/render to a framebuffer that is [[Framebuffer Objects#Framebuffer Completeness|not complete, as defined here]].
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| * {{code|GL_STACK_OVERFLOW}}<sup>1</sup>: Given when a stack pushing operation cannot be done because it would overflow the limit of that stack's size.
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| * {{code|GL_STACK_UNDERFLOW}}<sup>1</sup>: Given when a stack popping operation cannot be done because the stack is already at its lowest point.
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| * {{code|GL_TABLE_TOO_LARGE}}<sup>1</sup>: Part of the ARB_imaging extension.
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| <sup>1</sup>: These functions are deprecated.
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| [[Category: General OpenGL]]
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