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ProRender - normal/bump/alpha chanel problems

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Hi there,

I’m having a series of issues with proRender [R21 (303831)MAC - Radeon PRO WX7100 and/or PRO 460 - produce same issue] results when
1. Normal map channel is used -seems same with bumps - I’m using Megascan objects with fantastic level of detail maps, including normal and bump. However using it either in the outside Normal or inside the reflectance chanel with bump strength - mode (normal map), does not show any effect in the final render. Funny enough the viewport shows better with the right strength than the render. Any idea? Is this a bug? A still missing badly implemented part?

2. Alpha channel. I have quite an amount of beautiful Laubwerk tree packages and they all come with alpha channel leaves. I understand they are not coming with PBR materials so I properly convert them, but when alpha channel is used for the leaves, I get a terrible result with greenish sort of inverted look in the rendering. As soon as the alpha is turned off, renders fine. I tried to play with different alpha channel settings but the results are the same. seems also if I turn off the Firefly filter, the green inversion pictures turns into a bunch of red dots.

3. Backlight shader. Laubwerk trees leaves uses backlight shader in the luminance channel to get shadows shine through the leaves. (if this is a proper way to explain) however seems this has zero effect when provender is used. Is the backlight shader implemented?

Any suggestions or tips to solve this would be appreciated.


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