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I've rendered RGB images from a set of blend files and now I want to generate depth maps, normals and speed vectors from the blend files. Since generating these takes much lesser time as compared to rendering RGB images, is it possible to generate depth maps without having to render the RGB images?

PS: I'm using cycles rendering engine, since Eevee does not support speed vectors.

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Hm... I don't see direct option. So just a two tips ...

  1. You could render dept/vector/normal directly with RGB as passes into OpenEXR Multilayer

... or let Compositor save a render as separate files) so no extra rendering.

enter image description here

  1. If you have already RGB rendered, set Render Properties > Max Samples 1 for rendering dept/vector/normal passes.

enter image description here (additionally you can try turn off Denoise, under Light Paths set Max Bounces to zero, Caustics if used, or disable all lights in scene and environment, but I didn't notice difference on my simple scene)

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  • $\begingroup$ Yeah. Currently I'm setting max samples to 1. I was hoping there would be a better way :) $\endgroup$ May 17, 2022 at 18:02
  • $\begingroup$ Yeah ... I thought pass "Combined" could do that job, but no :) So if no one smarter ... $\endgroup$
    – vklidu
    May 17, 2022 at 19:45

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