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Maniphest T48050

No antialiasing in Direct/Indirect passes
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Description

System Information
winds 7 64bit

Blender Version
Broken: blender2.77 22a2853
Worked: (optional)

Short description of error
No antialiasing in Direct/Indirect passes

Exact steps for others to reproduce the error
just render with the Direct/Indirect passes check on.

I don’t know this is bug or not, or it’s should be this, if the Direct/Indirect passes can antialiasing will be much better for the post processing, like use the indirect pass for denoise.

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Event Timeline

Leroy (Leroy) created this task.Apr 4 2016, 5:15 PM
Leroy (Leroy) raised the priority of this task from to 90.
Leroy (Leroy) updated the task description. (Show Details)
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Brecht Van Lommel (brecht) changed the task status from Unknown Status to Archived.EditedApr 4 2016, 11:33 PM
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This not a bug, it's a side effect of splitting the direct/indirect and color passes. Either direct/indirect or color must have such "aliasing" issues for the multiplied results to be correct, there's no way around that.

I don't know that having a smooth direct/indirect pass is in fact better for denoising when viewing the result after multiplying with the color. Maybe if you use a simple blur filter but even then, you would get too much color bleeding from the background regardless, and with a smooth direct/indirect pass that would be worse.

A smart denoising filter could figure out not to blend across these boundaries, and having a clear boundary helps to avoid the background bleeding in.