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Here is the situation:
I extract the highest level as a bump map, using subdivision mode into a 32bit exr.
I have painted additional bump detail in the viewport on a new layer.
I want to combine them into a single bump map. I cant figure out how to do this.
Ultimately i would also rather it be a 16bit bump or an 8 bit.. but the whole gain value thing makes each uv tile not match up when used as a bump, and this makes it difficult to composite in the painted bump map into the extracted bump map (displacement).
EDIT: I think I got it. I’m using the raycast method to extract a 16bit tif that i will try to combine in the viewports with the painted bump layers. I generally avoid raycasting extractions because it tends to not pick up occluded areas and the eye socket is pretty occluded, but it seems to be doing an ok job.
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