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Maniphest T92035

axis shows wrong when closer to it
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Description

System Information
Operating system: Linux-5.14.9-hardened1-1-hardened-x86_64-with-glibc2.33 64 Bits
Graphics card: Mesa Intel(R) UHD Graphics 630 (CFL GT2) Intel 4.6 (Core Profile) Mesa 21.2.3

Blender Version
Broken: version: 3.0.0 Alpha, branch: master, commit date: 2021-10-04 20:40, hash: rB18959c502d62
Worked: (newest version of Blender that worked as expected)

Short description of error
axis is blurred while viewport closer to it

Exact steps for others to reproduce the error

  1. change the length unit to millimeters and the clip start to 1 mm
  2. add a 10 mm cube
  3. press the dot key on keypad
  4. rotate the viewport closer to an axis
  5. this axis becomes blur

bug_32843971.blend94 KBDownload

Event Timeline

sbchild (sbchild) created this task.Oct 8 2021, 7:54 AM
sbchild (sbchild) renamed this task from axes shows wrong to axis shows wrong when closer to it.Oct 8 2021, 7:56 AM
sbchild (sbchild) updated the task description. (Show Details)
sbchild (sbchild) updated the task description. (Show Details)
Alaska (Alaska) closed this task as Archived.Oct 8 2021, 8:11 AM
Alaska (Alaska) added a subscriber: Alaska (Alaska).

This is a floating point precision issue. Computers have limited precision to work with when you want to do calculations quickly (such as in the case of graphics). And changing certain settings in some programs results in a loss in precision which can look like the rendering artifacts seen in your video.

The only way to fix this is to have the precision of rendering in Blender increased, however doing so results in a performance drop, and even then Blender will still have this issue, it's just the limits of when precision is lost is changed. Hence, precision is kept as it is now. Because it's good enough for most artists and it's fast.