Why is the `bitdepth` reported in SmartPreRender 0 when the opacity is not %100

Question

Why is the `bitdepth` reported in SmartPreRender 0 when the opacity is not %100 in the effect compositing options? does the compositing options effect the bit depth that is driving the effect? Are there any guarantees about the bitdepths of the layers being passed in during a smart render?

James Whiffin · Answer

I just tried to replicate this on my smartFX plugin and it kept saying 32 even if compositing options -> opacity wasn't 100. Many of my plugins rely on this value instead of calling PF_GetPixelFormat on the output, so it would break if it was returning 0

When you have compositing options the pre-render behaviour changes and you may receive extra calls, this tripped me up because I wasn't accounting for this.

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