# An OpenGL ES 2.0 error code
extern class GLError
	super GLEnum

	redef fun to_s
	do
		if self == gl_NO_ERROR then return "No error"
		if self == gl_INVALID_ENUM then return "Invalid enum"
		if self == gl_INVALID_VALUE then return "Invalid value"
		if self == gl_INVALID_OPERATION then return "Invalid operation"
		if self == gl_INVALID_FRAMEBUFFER_OPERATION then return "invalid framebuffer operation"
		if self == gl_OUT_OF_MEMORY then return "Out of memory"
		return "Unknown error"
	end
end