pierre VERCRUYSSE (pierre++at++cathy.rennes.sgi.com)
Tue, 10 May 1994 16:45:05 -0600
I have a customer who have some difficulties to implement the Fog.
I have an Onyx RE2 with 2 RM in Irix 5.2 and performer 1.2.
He have watch the difference with the his application and perfly and he has
conclude this summary and a lot of question ?
type of fog Near far status
VtxLin,PixLin or [1.0,1000.0] 1000.0 no problem, it'ok
spline if > 1000.0 8000.0 Problem why ??
VtxExp/VtxExp2 no variation of the fog when we change the near
PixExp/PixExp2
1. We don't seen what kind of value we can put on near ? and what is the
minimum distance that i can define for the value "NEAR" of the interval for the
fog ?
2. How can i optimise the drawing of the image by manipulating the clipping
plan "Far" pfFogRange(fog,1.0f,distance of visibility);
pfChanNearFar(channel,1.0f,distance of visibility+alpha);
3. Thus he exist a relation between the distance of visibility, the dynnamic in
z of the system and the dynamic about the BDD (step of discretisation) ?
My customer goes to the preparation of the ITEC and he told me that during the
preparation about the demo of the shared database, He hav'nt seen a demo of
performer with fog. Is it true or not ?
In advance Thanks for your answerd .
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