Png artefact #107673
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Milestone 1: Basic, Local Asset Browser
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Unbreak Now!
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Reference: blender/blender#107673
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System Information
Operating system: Windows-10-10.0.19044-SP0 64 Bits
Graphics card: NVIDIA GeForce GTX 950M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 512.15
Blender Version
Broken: version: 3.5.1, branch: blender-v3.5-release, commit date: 2023-04-25 13:50, hash:
6ee8aa4997ee
Short description of error
There is an issue with displaying a vector map in PNG 16-bit format. For comparison, I saved the vector map in EXR 16-bit format with compression, but no artifacts were observed.
Hi @cheteron , from your file, the EXR image actually has negative R and G values, where in the PNG one those values are clamped to zero, hence it won't represent the actual vector correctly. So I believe this is not a bug, and using EXR for saving float data is preferred. Thanks!
Thank you for answer!
Can this be embedded as a tooltip when saving? Because I spent a long time looking for the cause, and it never occurred to me that the problem was with negative values. I thought the problem was with the bit depth.
Thank you for answer!
Can this be embedded as a tooltip when saving? Because I spent a long time looking for the cause, and it never occurred to me that the problem was with negative values. I thought the problem was with the bit depth.
Thank you for answer!
Can this be embedded as a tooltip when saving? Because I spent a long time looking for the cause, and it never occurred to me that the problem was with negative values. I thought the problem was with the bit depth.
@cheteron I'll go talk to the UI guys. I think that could be a good idea, yes.