Material transparency problems in solid viewport #38766

New Issue

Karja Krähwald · 2014-02-23T01:03:06+01:00

Karja Krähwald commented

2014-02-23 01:03:06 +01:00

System Information
Windows 7 64, HD 5770

Blender Version
Broken: 2.69 release and hash:4789793

Short description of error
Not sure here - i think these are bugs, but please take a look.

Blender Render - Solid viewport shading:
Mesh objects with Properties>Object>Display>Transparency>on ignore the checkbox for transparency in the material settings.
Means that you can adjust the alpha without activating it, and unfortunately you cant disable it on the fly via checkbox to remain the current state.

Could be related:

If you switch from Blender Render to Cycles Solid viewport with changed material alpha, the material keeps transparent even if you click on "use nodes".
Seems not to be a big problem but as far as i know there is no additional setting in Cycles to control it so its kind of hidden function now.
Blender Renders Emit for example disappears after switching to Cycles.

Exact steps for others to reproduce the error

[Blender Render]

Add Cube.
Go to Properties>Object>Display and enable Transparency, so you can see it in Solid viewport.
Give Cube a material.
Go to Material>Transparency (off) and play with the alpha setting.

Problem: The checkbox is treated as always enabled.

[Cycles Render]

This alpha-setting is also taken to Cycles solid viewport even if you click use nodes for the material.

**System Information** Windows 7 64, HD 5770 **Blender Version** Broken: 2.69 release and hash:4789793 **Short description of error** Not sure here - i think these are bugs, but please take a look. Blender Render - Solid viewport shading: Mesh objects with Properties>Object>Display>Transparency>on ignore the checkbox for transparency in the material settings. Means that you can adjust the alpha without activating it, and unfortunately you cant disable it on the fly via checkbox to remain the current state. ------- Could be related: If you switch from Blender Render to Cycles Solid viewport with changed material alpha, the material keeps transparent even if you click on "use nodes". Seems not to be a big problem but as far as i know there is no additional setting in Cycles to control it so its kind of hidden function now. Blender Renders Emit for example disappears after switching to Cycles. **Exact steps for others to reproduce the error** [Blender Render] 1. Add Cube. 2. Go to Properties>Object>Display and enable Transparency, so you can see it in Solid viewport. 3. Give Cube a material. 4. Go to Material>Transparency (off) and play with the alpha setting. - Problem: The checkbox is treated as always enabled. [Cycles Render] - This alpha-setting is also taken to Cycles solid viewport even if you click use nodes for the material.

Karja Krähwald commented

2014-02-23 01:03:06 +01:00

Changed status to: 'Open'

Karja Krähwald commented

2014-02-23 01:03:06 +01:00

Added subscriber: @karja

blender-admin commented

2014-02-24 15:35:26 +01:00

This issue was referenced by blender/blender-addons-contrib@a3f4736a4d

This issue was referenced by blender/blender-addons-contrib@a3f4736a4d34d9a85ee32a43d2425c7b916a20ec

blender-admin commented

2014-02-24 15:35:26 +01:00

This issue was referenced by a3f4736a4d

This issue was referenced by a3f4736a4d34d9a85ee32a43d2425c7b916a20ec

Brecht Van Lommel commented

2014-02-24 15:36:12 +01:00

Added subscriber: @brecht

Brecht Van Lommel commented

2014-02-24 15:36:12 +01:00

Thanks for the report, fixed now by not using this alpha value for cycles.

Brecht Van Lommel was assigned by Sergey Sharybin

2014-02-24 15:36:40 +01:00

Sergey Sharybin commented

2014-02-24 15:36:40 +01:00

Added subscriber: @Sergey

Sergey Sharybin commented

2014-02-24 15:36:40 +01:00

Issue with the BI seems rather simple to solve? Not sure how should this behave with Cycles tho..

Brecht Van Lommel commented

2014-02-24 15:36:42 +01:00

Changed status from 'Open' to: 'Resolved'

Brecht Van Lommel closed this issue

2014-02-24 15:36:42 +01:00

Brecht Van Lommel commented

2014-02-24 15:36:42 +01:00

Closed by commit a3f4736a4d.

Closed by commit a3f4736a4d.

Sergey Sharybin commented

2014-02-24 15:37:03 +01:00

@brecht, woops race condition :)

blender-admin commented

2014-02-24 15:44:22 +01:00

This issue was referenced by blender/blender-addons-contrib@7ef1ed15f1

This issue was referenced by blender/blender-addons-contrib@7ef1ed15f10c46275486fce1bca0b0355848b32d

blender-admin commented

2014-02-24 15:44:22 +01:00

This issue was referenced by 7ef1ed15f1

This issue was referenced by 7ef1ed15f10c46275486fce1bca0b0355848b32d

Pablo Vazquez commented

2014-02-24 18:49:51 +01:00

Added subscriber: @pablovazquez

Pablo Vazquez commented

2014-02-24 18:49:51 +01:00

Dang, I (ab)used this bug to [make objects transparent ]] in the viewport in Cycles, via the [ http:*pablovazquez.org/amaranth | Amaranth addon, is it possible now in Cycles to have semi-transparent objects in the viewport?

Example: the cornea in the eyes is solid, so you can't see the iris. In order to see the iris I would lower the transparency of the object in the viewport, because hiding it from the outliner would hide it from the rendered preview too (unless using "Only this renderlayer" button thing).

Dang, I (ab)used this bug to [make objects transparent ]] in the viewport in Cycles, via the [[ http:*pablovazquez.org/amaranth | Amaranth ](http:*pablovazquez.org/amaranth/img/thumbs/feat_view3d_materialalpha.png) addon, is it possible now in Cycles to have semi-transparent objects in the viewport? Example: the cornea in the eyes is solid, so you can't see the iris. In order to see the iris I would lower the transparency of the object in the viewport, because hiding it from the outliner would hide it from the rendered preview too (unless using "Only this renderlayer" button thing).

Brecht Van Lommel commented

2014-02-24 19:54:47 +01:00

Ok, this works again now, see {88f1c283a773bb76334d2d6a849d4e45c5c95373}.

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Material transparency problems in solid viewport #38766