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Texture Object Names
You can create a texture object with any name, as long as it isn't already the name of another texture object. To find out whether a particular name is in use, call glIsTextureEXT(). As a convenience, glGenTexturesEXT() returns a set of texture names that are known to be unused.
To delete one or more texture objects, call glDeleteTexturesEXT(). After a texture object is deleted, its name is freed; it has no contents, and its resources are returned to the system.
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