Comments on: Playing with OSL #3: WindowBox Shader

By: Alan Barry Wilson

Alan Barry Wilson — Mon, 05 Sep 2022 19:48:52 +0000

Ok I think I am stupid. I want use your script but I am net understanding how or where to install it properly

Cheers

Alan

By: FixPlease

FixPlease — Sun, 10 Jul 2022 13:34:02 +0000

When I freeze transformations on the window with my parallax shader, the image becomes distorted. Does anyone know how to fix this?

By: Phil

Phil — Mon, 03 Jan 2022 09:59:20 +0000

Hey Julius,
is there any UE4 support for this great tool yet?

By: AntonioDusly

AntonioDusly — Fri, 17 Dec 2021 17:32:14 +0000

However, there was a big issue with the original script for longer parallax effects walls were getting really distorted and this issue has kind of stopped me from playing with the shader for some time until David McDonnell posted a windowAspect fix on Facebook, it was a game-changer, now it was possible to create really long spaces without wall distortions. In the end, I also figured that it would be great to create both night and day versions of the same space, which would give some flexibility for Archviz projects.

By: Paul Dobson

Paul Dobson — Sat, 06 Nov 2021 17:03:57 +0000

This is fantastic, thanks for sharing! Any idea if it’s possible to make this work with non-vertical windows, eg skylights, so that the fake room box is rotated to maintain the expected orientation?

By: hyal

hyal — Sun, 10 Oct 2021 14:50:43 +0000

OSL for Arnold to swap reading Midground and Curtrains positions without editing EXR. I don’t understand how I did and how it works but it works if you change this lines:

midgroundUV[1] = (1-midgroundUV[1]) – 2.0/3.0;

color curtainsUV = objPOrig * color(1.0/3.0, 1.0/3.0, 1);

curtainsUV[0] = 1.0/3.0 – curtainsUV[0];
curtainsUV[1] = 2.0/3.0 + curtainsUV[1];

By: Ramon

Ramon — Thu, 20 May 2021 10:55:36 +0000

Hi,
thank you very much for creating the shader, it really is awesome and super helpful!
Is the shader in any way software or scale dependant? When using it in Maya Arnold it works great, but exporting the same plane to houdini and applying the shader there (Arnold as well) results in a very distorted image.
Been trying to figure it out for a few hours now, but did not really come closer, would appreciate any insight if there is something to take care of with regards to scaling.

By: Thomas Bussey

Thomas Bussey — Mon, 17 May 2021 16:42:26 +0000

A little late to the party, but this is really awesome stuff. I’ve managed to use the Vray version on a Railclone object and it’s working amazingly except for one issue: the midground and the curtains are the wrong way around. I know you said you can’t really troubleshoot Vray problems, but I wondered if you had any insight in to whether this is something to do with how the OSL code is written?

Someone on the Railclone forum apparently had the same issue and dealt with it in what’s probably the most pragmatic way: by swapping the two parts of the textures around. https://forum.itoosoft.com/railclone-pro-(*)/osl-parallax-mapping/

By: Manel

Manel — Mon, 17 May 2021 08:24:20 +0000

Hi,
thank you very much for your answer!

So. I am not sure if I understood you:

1) If I do that, it works perfecly, because the plane is ratio 1:2 and if I put the UVs of the square plane I get to cubes inside the “big” one: https://ibb.co/1n7gVxy But what I am trying to achieve is to “strech” the texture as you suggested in a past post: http://julius-ihle.de/?p=2451

2)Here I do not understand what you mean: The plane has no transforms on it, it is just an editpoly…and the images that I am sending you are fast vray renders with IPR

thank you again!

By: Julius

Julius — Sat, 15 May 2021 07:50:56 +0000

Hey Manel,

For me it’s a bit hard to debug unfortunately as I don’t currently have access to vray.

What you can do to check yourself is 2 things:
1) make sure the UVs are the same as on the square plane
2) make sure the transforms are not frozen. If you’re visualizing the PRef for example it should look the same as on a square plane.

Hope that helps!

Best,
Julius