Feature Request: Add Height/Bump Mapping to Principled Material

RenderKit / ospray

An Open, Scalable, Portable, Ray Tracing Based Rendering Engine for High-Fidelity Visualization

http://ospray.org

Apache License 2.0

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Feature Request: Add Height/Bump Mapping to Principled Material #458

Closed mconti1527 closed 3 years ago

mconti1527 commented 3 years ago

I am a heavy user/developer of OSPRay on Paraview and one feature that would be great to have is have principled materials support height/bump mapping as it would greatly add to the realism we could achieve.

As far as I am aware there is no way to do this with the current architecture, but if I am wrong please let me know.

https://en.wikipedia.org/wiki/Heightmap

Thanks, Marston

johguenther commented 3 years ago

Hi Marston, Principled already supports bump mapping (normal mapping), e.g. using a (three channel) texture map_baseNormal, for multiple layers (e.g. also map_coatNormal). But you are specifically referring to (Blinn) height mapping (single channel texture)? Easiest way would then be to convert the height map into a normal map (there are many tools for that).

Cheers, Johannes

johguenther commented 3 years ago

Please re-open if there are further questions.