Michael Jones (mtj++at++babar)
Mon, 19 Feb 1996 07:29:02 -0800
There was a version of the Impact software that reserved twice as
much texture memory as it should have. The problem you described
could be caused by this -- I suggest that you check with SGI's
Global Customer Satisfaction group for the latest word on patches
or new software releases.
:Only some of the textures are not powers of two, but all of the
:numbers that I have given here are after the automatic texture
:expansion behavior.
This may be a problem too. (I'm beginning to think that writing
the little "how much texture" printf in the pduDownloadTexList()
function was a mistake -- since it does not warn you in OpenGL
mode about the following problem). Here's the problem:
Performer does not do the resize for you, GL does. IRIS GL that
is. OpenGL does not do the texture resize and if you use non
power-of-two textures for MIP-mapping, will fail in a number
of interesting ways. My advice is to use "izoom" to fix all of
your textures; make them all have sizes that are powers of two.
Michael Jones
Be seeing you, Phone:415.933.1455 Fax:415.965.2658 M/S:8U-590
Michael T. Jones Silicon Graphics, Advanced Systems Division
mtj++at++sgi.com 2011 N. Shoreline Blvd., Mtn. View, CA 94039-7311
"Du musst Amboss oder Hammer sein" -- Goethe
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