Maniphest T99276

Semi transparent render results saved to tiff or png looks significantly different
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Assigned To
None
Authored By
baoyu (baoyu)
Jun 29 2022, 6:17 PM
Tags
  • BF Blender
  • Render & Cycles
  • Images & Movies
Subscribers
baoyu (baoyu)
Germano Cavalcante (mano-wii)

Description

System Information
Operating system: Windows-10-10.0.22000-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 2080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 512.96

Blender Version
Broken: version: 3.3.0 Alpha, branch: master, commit date: 2022-06-05 19:05, hash: rB8589f60546b3
Worked: NEVER WORKED

Exact steps for others to reproduce the error
I've provided 2 blend files in the attachment.
alpha.blend is the how the images are product with. Open it to see the shaders or settings.

composit.blend has 3 images packed in. The exr image put over a pure black background is what it should be like. The png/tiff image put over a pure black background is excatly what they appears in Photoshop which is significantly different from the exr comp.

composit.blend499 KBDownload

alpha.blend122 KBDownload

Related Objects

Event Timeline

baoyu (baoyu) created this task.Jun 29 2022, 6:17 PM
baoyu (baoyu) updated the task description.
baoyu (baoyu) added projects: Render & Cycles, Images & Movies.
Germano Cavalcante (mano-wii) added a subscriber: Germano Cavalcante (mano-wii).Jun 30 2022, 9:08 PM

This is a limitation with more alpha emission.
PNG, TIFF has conflict when defining how emission behaves with transparency.

This issue is better explained in T81199: Some effects [bloom, smoke, fire, ..] still don't save in PNG with transparent background (occlusion vs. emission)

Germano Cavalcante (mano-wii) closed this task as a duplicate of T81199: Some effects [bloom, smoke, fire, ..] still don't save in PNG with transparent background (occlusion vs. emission).Jun 30 2022, 9:08 PM