displacement disappearing

[Anonymous]

I am having problems with the displacement of the material not rendering in some parts.
The material is just a plain colour, with a simple matt reflectance shader with casting displacement.

This building is actually a hot linked module


The model is Very large, but even when i marquee the particular area this still happens

Running AC10 with latest fixes, windows XP with a quad core 4GB ram

[Dwight]

What sun are you using and at what sampling rate?
What anti-alias and what render quality?

[Anonymous]

Sorry of course.
i am using the setting as showen in the image.
and then a sun object with 15 samples and 5' of diversion.

these are only process renders, for the final i usually crank the setting up to best anti-aliasing and 3000 x 1500 res.

could it just be the anti-aliasing quality that is giving my poor texture reproduction

[Dwight]

You don't have my book.

It looks like you might be in Archicad 12.

Post your machine and software in your forum signature - gets better answers.

Sun gets complex after Archicad 9 - you re probably doing the wrong thing with the sun. Try the Sun Class Shader "Realistic Sun" and thro away the sun object.

[Anonymous]

lol i do have your book,
it is me me just being lazy and trying to use all the CPU cores. and still get light that disperses.

i am definately in AC10.

[Dwight]

okay - see book supplement for "Realistic Sun"

[Anonymous]

Yeah i am now rendering with the realistic sun with the same results.

and i have supplied the results.

this is happening with a few textures, usually ones of large surfaces (outsides of a building)

have you ever had any problems with the casting shader?
the shader values are quite low?

[Anonymous]

another example from the same model...

[Dwight]

increase realistic sun sampling.



[bed time now]

[Dwight]

well, it is one thing to have a surface look a little rough, but to have real stuff disappear in the foreground - alarming.

ARE you SURE that the wall is correctly surfaced?