ESPELSA-STC (espelsa++at++mad.servicom.es)
Thu, 16 Oct 1997 13:45:55 +-100
I'm trying to compute the TRAM usage due to more than one clipmap,
although this could be applied to regular mipmaps.
Each level's size will be added to a TRAM bank alternatively, and this
will yield different occupacies per bank for the first
clip/mipmap. Now, for the second clipmap, will its first level be
loaded in bank 0 (more loaded in my computation) or in bank 1? What
will happen to the third mipmap? A new clipmap might be accepted
without overloading TRAM depending on where will the first level and
subsequent levels go.
Further, since the mipmap levels occupy *areas* rather than *lengths*
and thus, texture occupancies do not actually sum up linearly,
an estimation in this fashion can be risky. Is there any fine grain
algorithm available for this computation?
And one additional issue: does iR manage the last 5 levels of a mipmap
in a single bundle as IMPACT so that they are not distributed
alternatively in banks but rather stay together in one?
Any insights on these close-to-the-metal topics will be greatly
appreciated.
Yuri.
----
Juan R. "Yuri" Saenz-Diez
ESPELSA - Division STC
Madrid, Spain
espelsa++at++mad.servicom.es
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