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Roughness with inverted textures
Posted: Thu Jun 26, 2014 7:13 pm
by riggles
I'm seeing an inconsistent behavior with inverted image textures when using power. In the example below, I have a black glossy material. The specular map is being driven by a grayscale wood texture. As you see, even when inverted, when the power of the image is reduced, it basically blends it with black (value of 0). However, when plugging the same map into the roughness channel (spec set to 1.0) the opposite seems to happen. Lowering the power on an inverted texture here blends it with white (value of 1).
The power control should reduce the roughness value just like it did when driving the specular value, regardless of whether the texture is inverted or not.
Re: Roughness with inverted textures
Posted: Tue Jul 01, 2014 7:24 pm
by face_off
The power control should reduce the roughness value just like it did when driving the specular value, regardless of whether the texture is inverted or not.
John - is this happening in Octane Standalone too? (I'm trying to work out if it is a plugin or general Octane issue).
Paul
Re: Roughness with inverted textures
Posted: Tue Jul 01, 2014 7:55 pm
by riggles
face_off wrote:The power control should reduce the roughness value just like it did when driving the specular value, regardless of whether the texture is inverted or not.
John - is this happening in Octane Standalone too? (I'm trying to work out if it is a plugin or general Octane issue).
Paul
I exported the ORBX file into Octane Standalone. Same behavior. Perhaps a larger Octane issue.
Re: Roughness with inverted textures
Posted: Wed Jul 02, 2014 7:22 am
by face_off
I exported the ORBX file into Octane Standalone. Same behavior. Perhaps a larger Octane issue.
In that case, can you pls post that ORBX file to the Octane Standalone 2.02 release thread with details of the problem and Otoy can look into it.
Thanks
Paul
Re: Roughness with inverted textures
Posted: Tue Sep 27, 2016 5:48 pm
by Kyogo
riggles wrote:I'm seeing an inconsistent behavior with inverted image textures when using power. In the example below, I have a black glossy material. The specular map is being driven by a grayscale wood texture. As you see, even when inverted, when the power of the image is reduced, it basically blends it with black (value of 0). However, when plugging the same map into the roughness channel (spec set to 1.0) the opposite seems to happen. Lowering the power on an inverted texture here blends it with white (value of 1).
The power control should reduce the roughness value just like it did when driving the specular value, regardless of whether the texture is inverted or not.
rough texture invert.jpg
This problem remain unsolved.
However, add color correction to the roughness slot, then inverted texture works normally.