Occlusion issue on edges

[Gianluca Tomasello]

Here a test state to reproduce test.molj.txt

[Alexander Rose]

Don't know why this happens, but the strength needs to be very high to to be apparent, so maybe a clamp is needed somewhere.

[Gianluca Tomasello]

I'm seeing this also with default occlusion strength, it is less perceivable of course, but it seems always there when zooming in

[ludovic autin]

Looks like it's come from getMappedDepth and the different resoltution, plus the multisample. If I do the following change: float sampleDepth = getDepth(offset.xy); // getMappedDepth(offset.xy, selfCoords); and disable the multisample effect the artifact disappear.

[Gianluca Tomasello]

Hi @corredD,
Thanks, In my system I am able to resolve the issue just by disabling multisample. getMappedDepth seems to work fine to me.
I have found something else though, that remains even keeping multisample disabled. Here a test-state.molj.txt to reproduce

[Gianluca Tomasello]

It seems to be related to the blur kernel. When disabled it disappears

[ludovic autin]

It seems related to the near and far clipping plane values, which are used to linearize the depth value. In your example try changing the clipping value.

[Gianluca Tomasello]

I see, it is visible in the front and back clipping planes.

And disabling far clipping plane it disappears on the back only

[Alexander Rose]

Thanks for investigating this. I am addressing this in #1134.