Screen Space Reflections artifacts (most noticable when using half res trace) #86473
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Reference: blender/blender#86473
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System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 770/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 461.40
Blender Version
Broken: version: 2.93.0 Alpha, branch: master, commit date: 2021-03-10 21:19, hash:
9ef24d5aaaWorked: (yesterday's build)
Short description of error
Screen Space Reflections artifacts when using half res trace.
Exact steps for others to reproduce the error
Enable and disable half res trace to see the artifacts.
SSRBUG.blend
Added subscriber: @Xorrito
#86558 was marked as duplicate of this issue
#86477 was marked as duplicate of this issue
Added subscriber: @MLSpence
This happens with half res tracing off as well, although it does not happen as often. Only in specific angles it happens for me, but it depends.
Added subscriber: @lichtwerk
Changed status from 'Needs Triage' to: 'Confirmed'
Can confirm.
Screen Space Reflections artifacts when using half res trace.to Screen Space Reflections artifacts (most noticable when using half res trace)Added subscriber: @sozap
Added subscriber: @fclem
Changed status from 'Confirmed' to: 'Resolved'
This was fixed either by
09e77d2c89,165a2da753or03490618a2Added subscriber: @Lteng
My task was closed so I am not sure I can continue to comment on it...so I will continue with this merged one.
I'm still experiencing artifacts with the latest version (commit date: 2021-03-13 22:49, hash:
1f8d27a191):The older version did not have this artifact commit date: 2021-03-03 22:32, hash:
e4a55b46c4):Attaching a file just in case:
light_test_2021.blend
I too am still experiencing this bug even with the new version, but now it seems to not be caused by screen space reflections. I still get them even when it is turned off.
I am experiencing these artifacts as well, these seems to depend highly on view distance.
However, I assume these are a bit separate from the report here, so it would be good to open a new report for this.
This seems to be somewhat related to contact shadows, turning them off remove artifacts
not all of them, try zooming in and out.
I"ve pushed a fix for the shadow issue
4e236326c1. Do note that your scene scale is quite big and thus you need to adjust the contact shadow bias accordingly. If the issue persist, create another report.Changing the bias and distance of the contact shadow helps a bit (thanks for the tip), however I'm not too clear on why I did not have to do this in the older version.
@Lteng because we changed the way the tracing is done and it's now more accurate. But it self-shadows itself more easily. Previous version also had this issue.