MacOS ARM64 builds have issues saving WEBP images from 32bpp buffers #105006

New Issue

Jesse Yurkovich · 2023-02-21T06:32:14+01:00

Jesse Yurkovich commented

2023-02-21 06:32:14 +01:00

System Information
Operating system: MacOS ARM64 buildbot

Blender Version
Broken: 3.6 main 7699c7407d
Worked: n/a

Short description of error
The newly added imbuf_save is failing for certain scenarios but only on MacOS ARM64 builds.

This is a tracking bug so we can investigate the issue and re-enable the tests.

Exact steps for others to reproduce the error

Uncomment the 2 WebP tests in tests/python/bl_imbuf_save.py
Run and observe large deviations in expected pixel values:

The first failure seems entirely incorrect while the second exceeds our 1% failure threshold @ 0.016.

webp-rgb-70__from__rgba32.webp
  Mean error = 0.0058668
  RMS error = 0.01072
  Peak SNR = 39.3961
  Max error  = 0.0862745 @ (77, 45, G)  values are 0.04705883, 0.043137256, 0.0627451 vs 0.13333334, 0.12941177, 0.14901961
  9791 pixels (59.8%) over 1e-06
  2354 pixels (14.4%) over 0.016


webp-rgba-70__from__rgba32.webp
  Mean error = 0.00128407
  RMS error = 0.00366359
  Peak SNR = 48.7219
  Max error  = 0.054902 @ (112, 62, R)  values are 0.5058824, 0.25882354, 0.50980395, 1 vs 0.56078434, 0.3137255, 0.5647059, 1
  5139 pixels (31.4%) over 1e-06
  312 pixels (1.9%) over 0.016
FAILURE

**System Information** Operating system: MacOS ARM64 buildbot **Blender Version** Broken: 3.6 main 7699c7407d08e79580c36554206f14310f0f56c9 Worked: n/a **Short description of error** The newly added `imbuf_save` is failing for certain scenarios but only on MacOS ARM64 builds. This is a tracking bug so we can investigate the issue and re-enable the tests. **Exact steps for others to reproduce the error** - Uncomment the 2 WebP tests in `tests/python/bl_imbuf_save.py` - Run and observe large deviations in expected pixel values: The first failure seems entirely incorrect while the second exceeds our 1% failure threshold @ 0.016. ``` webp-rgb-70__from__rgba32.webp Mean error = 0.0058668 RMS error = 0.01072 Peak SNR = 39.3961 Max error = 0.0862745 @ (77, 45, G) values are 0.04705883, 0.043137256, 0.0627451 vs 0.13333334, 0.12941177, 0.14901961 9791 pixels (59.8%) over 1e-06 2354 pixels (14.4%) over 0.016 webp-rgba-70__from__rgba32.webp Mean error = 0.00128407 RMS error = 0.00366359 Peak SNR = 48.7219 Max error = 0.054902 @ (112, 62, R) values are 0.5058824, 0.25882354, 0.50980395, 1 vs 0.56078434, 0.3137255, 0.5647059, 1 5139 pixels (31.4%) over 1e-06 312 pixels (1.9%) over 0.016 FAILURE ```

Jesse Yurkovich added the

labels 2023-02-21 06:35:31 +01:00

Jesse Yurkovich referenced this issue from a commit

2023-02-21 06:39:14 +01:00