Not sure if it's just me but there seems to be an issue with the way the Add texture tool is implemented in the PC version of Octane (2025 and 2026) that isn't properly adding textures. It works as expected on Mac using 2025, but I get different results on PC.
I'm adding these red and green gradients together:
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On the Mac I get this result:
And on PC I get this:
I'm trying to build my own render target so that I can manipulate the universal camera distortion texture with Octane material nodes and therefore see my adjustments live in the render view. However given that there seems to be something funky with the Add node on PC my distortion textures are being stretched edge to edge horizontally as it's not aligning for proper UV.
Here is the scene file I built on Mac (2025.2.1.1, Houdini 20.5.684)
Any perspective on why this would be greatly appreciated!