glIsRenderbuffer — determine if a name corresponds to a renderbuffer object
GLboolean glIsRenderbuffer( | GLuint renderbuffer); |
glIsRenderbuffer returns GL_TRUE if renderbuffer is currently the name of a renderbuffer object. If renderbuffer is zero, or is a non-zero value that is not currently the name of a renderbuffer object, or if an error occurs, glIsRenderbuffer returns GL_FALSE.
A name returned by glGenRenderbuffers, but not yet associated with a renderbuffer object by calling glBindRenderbuffer, is not the name of a renderbuffer object.
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