How do I flip Y in my DirectX normal map in Octane?

[cashley]

I have a bunch of OpenGL based normal maps that I need to flip the green (Y) channel on in Octane. Anyone know a trick or perhaps has an OSL shader that does this?

Thanks in advance!

Chad

[cashley]

Does anyone have any OSL coding experience? I'd happily pay for an OSL shader that allows me to invert the Green channel of a texture. Though this functionality should be built into Octane. Seeing how everyone else has this function (including Physical).

[milanm]

Almost done. I don't know how I missed this topic.

Cheers
Milan

[cashley]

Thanks to Albert Omoss for this:

#include <octane-oslintrin.h>
shader Texture(
color col1 = color(0.5, 0.5, 0.5),
output color c = 0)
{
color col2 = _evaluateDelayed(col1, u, v);

c = color(col2[0], 1.0 - col2[1], col2[2]);
}

works perfectly.

[milanm]

Ah, he was faster, great!

Cheers
Milan

[Studio21]

Very useful! cheers