Bug in Cycles Bake Texture #43550
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Reference: blender/blender#43550
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Ubuntu 14.10 x64 / Win 7 x64
Blender 2.73 builds from 'builder.blender.org'
Windows version - blender-2.73-8cd106f-win64
Linux version - blender-2.73-7524925-linux-glibc211-x86_64
Baking texture with cycles make strange useless pattern / artifacts
Tested on Linux/Windows recent build and 2.73a official.
Same AO baking process / blend file {F140694}works in official 2.73a
This is result in 2.73a
This is result in recent build
Changed status to: 'Open'
Added subscriber: @draker
Will have a look.
Added subscribers: @dfelinto, @Sergey
This is actually caused by
7b16fda, so would like if @dfelinto handles this.As it turned out the
7b16fdahelped in a few cases (OSL, the original report), but it introduced issues in others. I will see if this is something that should be an option or that we should simply revert before having the real solution.This issue was referenced by
1b92dfa961Changed status from 'Open' to: 'Resolved'
Closed by commit
1b92dfa961.Added subscriber: @MarcClintDion
The artifacts are still showing up, the first image shows the results without 7b16fda/rB1b92dfa96160
The next image shows the results with
1b92dfa961appliedHere's the .blend artifacts.blend
Changed status from 'Resolved' to: 'Open'
Interesting. Let me or Dalai to investigate in more details :)
This issue was referenced by blender/cycles@c765774e9f
Changed status from 'Open' to: 'Resolved'
Closed by commit blender/cycles@c765774e9f.
Changed status from 'Resolved' to: 'Open'
Argh, synchronizing Cycles repository closed ther eport again :S
At 4096x4096, the artifacts are very difficult to spot compared to the 1024x1024 version.
Maybe something here could be scaled or offset by a ratio of the texture size.
@Sergey I think we should go ahead and revert both commits (7b16fda/rB1b92dfa96160). I don't mind if we create a branch with those if you feel like investigating it further, but I think is better to have 'master' with a working bake sooner than later. For the records, the problem is really visible with low samples: bake_artifacts_low.blend
@dfelinto, you can just ifdef the jitter code and put comment about that: like
#undef USE_BAKE_JITTERat the top of the file and wrap the related code with the according ifdef, so it's easy to track things down. Would be better than the branch i think.Changed status from 'Open' to: 'Resolved'