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royterr
10-14-2009, 11:24 PM
I know that mimap filtering is essential when rendering animations, it avoids spatial and temporal aliasing or in simple words flickering in textures.

My problem with mimap filtering is that it blurs too much the texture even from a near camera distance and washes away all the nice fine details (even when mimap eliptical filtering is enabled with difeerent settings).

This is very limiting especially when trying to work on a convinving shader. For exemple, here, i am using a snow bump texture on my material with miamap filtering, notice how much it blurs the bump texture (specially when the texture is tiled several times) making it ugly,dull,flat,unrealistic. What i want is a fine detailed bump texture that doesn't flicker in animations, am i asking to much? it seems impossible to achieve that in MentalRay.

http://sor.typepad.com/.a/6a00d8350600cb53ef0120a5e6b5a7970b-pi
ph2003
10-15-2009, 06:28 AM
try lower the filter effect in the effect section like below than 1.
i always use 0.2-0.5

hope its helps.
royterr
10-15-2009, 06:47 AM
try lower the filter effect in the effect section like below than 1.
i always use 0.2-0.5

hope its helps.

the filter effect option has absolutely no effect when rendering in Mental Ray, it works only with the Maya renderer.
phix314
10-15-2009, 07:36 AM
the filter effect option has absolutely no effect when rendering in Mental Ray, it works only with the Maya renderer.

Wha?

Most certainly does.

Sphere -> New Lambert -> Fractal Bump -> 2 renders, one with a filter value of 1, one with .2. Def a difference.
ph2003
10-15-2009, 09:33 AM
umm.. well its does affect MR renders
heres a quick test
rendered with sun/sky scanline:
royterr
10-15-2009, 05:37 PM
umm.. well its does affect MR renders
heres a quick test
rendered with sun/sky scanline:

you are right it does work in MentalRay. This rocks! it works fine for me.
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