Scott A. Friedman (friedman++at++ucla.edu)
Thu, 30 May 1996 11:33:10 -0700
We are porting an application of ours to Performer 2.0 and are noticing
that the textures in our models are 'swimming'. We are using MultiGen
models and use TX-BILINEAR minification. The swimming is most
pronounced at a distance and when the eyepoint is at an angle of greater
than 45 degrees to the face of the polygon. When I switch to a
MipMap'ed version the problem goes away (reasonable).
The weird part is that our Performer 1.2 application does NOT exhibit
this same behaviour. That is, the same model and code and textures do
not swim. Are there any differences between the two versions that would
cause this? We are running on an RE2 using GL for both applications.
The OpenGL version of our ported application has the same swimming
textures.
Was my Performer 1.2 application MipMap'ing my textures and I didn't
know it?
Any insights are appreciated!
Scott Friedman
UCLA Architecture + Urban Design
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