wrong transparency in viewport #46349

Closed
opened 2015-10-02 19:08:10 +02:00 by mathieu menuet · 11 comments

System Information
Win7, R9 280X, Catalyst 15.7.1

Blender Version
Broken: 2.76 RC3

Short description of error
On a subdivided cube, alpha values near 1 (like 0.999 so low transparency) are inconsistent. Some faces become completly transparent, other stay opaque (awaited behavior).

Exact steps for others to reproduce the error
Open attached file, switch between 0.999 and 1 in transparency. Some faces become completly transparent with 0.999, showing only the interior faces.
bug_transparency_viewport_cycles.blend

bug transparency 1.000.PNG
All faces are opaque with 1
bug transparency 0.999.PNG
Some faces stays opaque, which is good (right side) but the left side is completly transparent although alpha is at 0.999.

**System Information** Win7, R9 280X, Catalyst 15.7.1 **Blender Version** Broken: 2.76 RC3 **Short description of error** On a subdivided cube, alpha values near 1 (like 0.999 so low transparency) are inconsistent. Some faces become completly transparent, other stay opaque (awaited behavior). **Exact steps for others to reproduce the error** Open attached file, switch between 0.999 and 1 in transparency. Some faces become completly transparent with 0.999, showing only the interior faces. [bug_transparency_viewport_cycles.blend](https://archive.blender.org/developer/F241742/bug_transparency_viewport_cycles.blend) ![bug transparency 1.000.PNG](https://archive.blender.org/developer/F241743/bug_transparency_1.000.PNG) All faces are opaque with 1 ![bug transparency 0.999.PNG](https://archive.blender.org/developer/F241744/bug_transparency_0.999.PNG) Some faces stays opaque, which is good (right side) but the left side is completly transparent although alpha is at 0.999.
Author

Changed status to: 'Open'

Changed status to: 'Open'
Author

Added subscriber: @bliblubli

Added subscriber: @bliblubli

#49376 was marked as duplicate of this issue

#49376 was marked as duplicate of this issue

Added subscriber: @brecht

Added subscriber: @brecht

Changed status from 'Open' to: 'Archived'

Changed status from 'Open' to: 'Archived'
Brecht Van Lommel self-assigned this 2015-10-02 23:01:31 +02:00

This is the same issue as #44826, #43093, #41731, lack of alpha sorting.

This is the same issue as #44826, #43093, #41731, lack of alpha sorting.

Added subscriber: @mont29

Added subscriber: @mont29

Confirmed, same issue with at least 2.74 too…

Confirmed, same issue with at least 2.74 too…

Eh, well, yet another tracker collision… ;)

Eh, well, yet another tracker collision… ;)

Changed status from 'Archived' to: 'Archived'

Changed status from 'Archived' to: 'Archived'

Added subscribers: @PatrickPoon, @lichtwerk

Added subscribers: @PatrickPoon, @lichtwerk
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Reference: blender/blender#46349
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