Angus Dorbie (dorbie++at++multipass)
Tue, 25 Nov 1997 11:55:42 -0800
Cheers,Angus.
On Nov 25, 8:42am, Doug Price wrote:
> Subject: gl texture size
> OpenGL gurus,
>
> The OpenGL standard requires that the dimensions of texture images be a
> power of 2. Does this refer only to the size allocated in texture memory, or
> does each individual image have to conform to this? My application is using
> glCopyTexImage2DEXT, which can copy an image from the frame buffer directly
to
> texture memory. The man page for glCopyTexImage2DEXT says that the width and
> height must only be a multiple of 8, but my application only seems to work
when
> the dimensions are powers of 2. It would sure be nice for performance tuning
> if I could allocate space in texture memory that was a power of 2, but write
an
> image to it that was <= to the allocated size (modifing the texture
coordinates
> to produce the desired result). For example, is it possible to allocate a
> 512x512 space in texture memory and only write data to 480x480 of it? If so,
> how?
>
> --
> **********************************************************************
>
> Doug Price Phone: (972) 960 - 2301
> Program Manager Fax: (972) 960 - 9049
> Paradigm Simulation Email: doug++at++paradigmsim.com
>
> **********************************************************************
> =======================================================================
> List Archives, FAQ, FTP: http://www.sgi.com/Technology/Performer/
> Submissions: info-performer++at++sgi.com
> Admin. requests: info-performer-request++at++sgi.com
>-- End of excerpt from Doug Price
=======================================================================
List Archives, FAQ, FTP: http://www.sgi.com/Technology/Performer/
Submissions: info-performer++at++sgi.com
Admin. requests: info-performer-request++at++sgi.com
This archive was generated by hypermail 2.0b2 on Mon Aug 10 1998 - 17:56:15 PDT