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Maniphest T91898

AutoDepth ignores texture transparency
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Description

System Information
Operating system: Win 10 64-bit
Graphics card: 980 Ti

Blender Version
Broken: 2.93.4 LTS, 3.0 alpha (including current latest build)
Worked: 2.79

Short description of error
When navigating using mouse with auto-depth enabled, the full-transparent parts of textures should be ignored when picking the depth.
This worked correctly in 2.79, but 2.93 and the latest 3.0 alpha seem to ignore this.

Exact steps for others to reproduce the error

Enable Auto-Depth, create an object, assign it a material with some full-transparent texture, then try to zoom / pan using mouse with the cursor on it.

autodepth-transparent-issue.blend811 KBDownload

Related Objects

Event Timeline

Jan Kadeřábek (jendabek) created this task.Oct 2 2021, 5:25 PM
Jan Kadeřábek (jendabek) updated the task description. (Show Details)
Jan Kadeřábek (jendabek) updated the task description. (Show Details)Oct 2 2021, 5:28 PM
Scurest (scurest) added a subscriber: Scurest (scurest).Oct 2 2021, 7:15 PM
Pratik Borhade (PratikPB2123) added a subscriber: Pratik Borhade (PratikPB2123).Oct 3 2021, 11:52 AM

Probably a duplicate of T76203: Viewport: Auto-Depth rotation ignore transparent image reference empties?

Jan Kadeřábek (jendabek) added a comment.Oct 3 2021, 12:18 PM
In T91898#1230000, @Pratik Borhade (PratikPB2123) wrote:

Probably a duplicate of T76203: Viewport: Auto-Depth rotation ignore transparent image reference empties?

That report is not related - it is describing the auto-depth behavior with semi-transparent images, but what I have reported is that fully transparent area of an image should be ignored when getting the depth.

Jan Kadeřábek (jendabek) added a comment.EditedOct 3 2021, 1:09 PM

You can test it on this scene - try to zoom through the hole

autodepth-transparent-issue.blend811 KBDownload

Jan Kadeřábek (jendabek) updated the task description. (Show Details)Oct 3 2021, 1:10 PM
Jan Kadeřábek (jendabek) updated the task description. (Show Details)
Pratik Borhade (PratikPB2123) added a project: EEVEE & Viewport.Oct 3 2021, 2:07 PM
Germano Cavalcante (mano-wii) changed the task status from Needs Triage to Needs Information from Developers.Oct 4 2021, 6:26 PM
Germano Cavalcante (mano-wii) added a subscriber: Germano Cavalcante (mano-wii).

While in Workbench objects with transparency don't write depth, in Eevee this apparently doesn't happen.
I don't know if it's a bug or something that wasn't implemented due to the complexity of Eevee compared to Workbench.
This seems like something for the EEVEE & Viewport team to decide.

Jan Kadeřábek (jendabek) added a comment.Sep 16 2022, 5:29 PM

This remains the issue even in 3.3 / 3.4. Any chance for a fix? Thanks