istexloaded man page on IRIX

istexloaded man page on IRIX

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istexloaded(3G)						       istexloaded(3G)

NAME
     istexloaded - returns whether the texture with the passed id is resident
     in texture memory

C SPECIFICATION
     long istexloaded(long target, long id)

PARAMETERS
     target   expects the texture resource to which the texture function
	      definition is to be bound.  There is one appropriate resource,
	      TX_TEXTURE_0.

     id	      expects the id of the texture that is being queried.

FUNCTION RETURN VALUE
     The returned value for this function is either 0 or 1.

     0	 indicates that the texture is not resident in texture memory.

     1	 indicates that the texture is resident in texture memory.

DESCRIPTION
     istexloaded returns a value that indicates whether a texture is loaded
     into texture memory. If it is not, then the next texbind for that texture
     will require a load which is generally fairly expensive. If it is then
     the texbind will not require a load, and the texbind will be relatively
     inexpensive.

SEE ALSO
     texbind

NOTE
     This routine is available only in immediate mode and only on
     RealityEngine systems running 5.0.1 or later.

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