White Artifacts with the mental ray Arch&Design Material

hasin · March 6th, 2008

Hi, sorry with my english, I`m from Sao Paulo in Brazil and I`m working in one project that have one problem with the mental ray Arch&Design Material. When I check on the option Fast Interpolate in the reflection group in the material appear white squares.

How I solve this problem?

AJLynn · March 6th, 2008

Are they reflections of bright spots that got interpolated down to big squares? Have you tried futzing with the interpolate settings?

hasin · March 6th, 2008

Hi Andrew,

they're not reflections of bright spots because the position of the mr Sun. I try change the value of the glossy samples, the Interpolation grid density and the Neighboring points to look up, but this values simply change the form and the size of the squares, and if I change the position of the camera change the position and the quantity of this white squares, or simply this squares dissapear.

I'm using the Logarithmic Exposure Control in max 9. I don't know if it changes anything.

Tommy Burns · March 7th, 2008

I read somewhere that there can be a problem with the brush metal standard material in A+D. Try change to a different material and add a bump map
Let me know how you get on?

hasin · March 7th, 2008

Hi Tommy,

I Will try, but the problem is when i use intepolation for materials how Wood...

mohitjersy · March 8th, 2008

I think it is bcoz of Anitialising.

ramy · March 9th, 2008

Try increasing your glossy samples in the reflection for the materials that have the artifacts. Increasing them to something like 256 will be fine as long as you are using fast-interpolate. This may give you a better result.

March 6th, 2008	#2 (permalink)
AJLynn Moderator Join Date: Aug 2004 Location: Beantown Age: 29 Posts: 4,336 Name: Andrew Lynn	Re: White Artifacts with the mental ray Arch&Design Material Are they reflections of bright spots that got interpolated down to big squares? Have you tried futzing with the interpolate settings?

March 6th, 2008	#3 (permalink)
hasin Junior Member Join Date: Dec 2007 Location: Sao Paulo, Brazil Posts: 3 Name: Hassan Zoghbi	Re: White Artifacts with the mental ray Arch&Design Material Hi Andrew, they're not reflections of bright spots because the position of the mr Sun. I try change the value of the glossy samples, the Interpolation grid density and the Neighboring points to look up, but this values simply change the form and the size of the squares, and if I change the position of the camera change the position and the quantity of this white squares, or simply this squares dissapear. I'm using the Logarithmic Exposure Control in max 9. I don't know if it changes anything.

March 7th, 2008	#4 (permalink)
Tommy Burns Senior Member Join Date: Aug 2006 Location: Dublin Posts: 261 Name: Thomas Burns	Re: White Artifacts with the mental ray Arch&Design Material I read somewhere that there can be a problem with the brush metal standard material in A+D. Try change to a different material and add a bump map Let me know how you get on?

March 7th, 2008	#5 (permalink)
hasin Junior Member Join Date: Dec 2007 Location: Sao Paulo, Brazil Posts: 3 Name: Hassan Zoghbi	Re: White Artifacts with the mental ray Arch&Design Material Hi Tommy, I Will try, but the problem is when i use intepolation for materials how Wood...

March 8th, 2008	#6 (permalink)
mohitjersy Junior Member Join Date: Mar 2008 Location: India Posts: 4 Name: Mohit Garg	Re: White Artifacts with the mental ray Arch&Design Material I think it is bcoz of Anitialising.

March 9th, 2008	#7 (permalink)
ramy Member Join Date: Mar 2005 Location: Houston Age: 28 Posts: 33 Name: Ramy Hanna	Re: White Artifacts with the mental ray Arch&Design Material Try increasing your glossy samples in the reflection for the materials that have the artifacts. Increasing them to something like 256 will be fine as long as you are using fast-interpolate. This may give you a better result. __________________ my website \| my 3ds max tips \| my portfolio

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