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Diffusion Pass coming out pixelated
Hi guys I’ve had an issue when rendering multi-passes from C4D, that being the diffusion pass is out of wack. It always seems to come out really pixelated and patchy across different projects I’m not sure what is causing it. I’ve attached a couple of images of what the render should be looking like (project was unfinished at that point but you get the idea) and then the weird diffusion pass. Any help here would be appreciated!
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9 Replies
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What renderer are you using? Is there Global Illumination involved?
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Hi Michael, thanks for helping, so I’m using the Physical renderer and I’ve got Global Illumination as a multi pass but not as an effect in the render settings. However I do have one light with ambient illumination checked on. Would any of those factors be contributing?
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I asked because it looked a bit like an unfinished GI pass, but if you don’t have the effect on, I don’t see why it would be happening at all. Although…why do you have it as a pass if you don’t have the effect on?
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Ah ok fair enough. I had the pass on because I wasn’t sure if ambient illumination or any other light effects might by picked up by it, I’m still learning in the way of compositing and definitely happy from culling from that long list!
So yeh it’s weird isn’t it, I have no idea why my diffusion pass is coming out like this.
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Can you share an example project where it demonstrates the issue? Like…can you strip it down to just a cube or something where it still does it?
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Hi MIchael, so I tried it a bunch of times, first with a cube, then step by step added reflection, lights, HRDI sky and a transperant object, and in all these renders the diffuse was fine. This is frustrating as in multiple more complex scenes my diffuse pass is always coming out pixelated as shown previously. Just can’t figure it out…
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Another example from a another project I’m working of this is the weird diffuse pass compared to the normal render file. No idea why…
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That is weird.
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Yep.
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