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Maniphest T25000

GLSL: Material indices get wicked when setting Transparency on
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Description


Latest trunk SVN, Ubuntu 10.04 64bit, nVidia 8400M

GLSL view:
Material indices get changed when a material has 'transparency' on.

Attached a simple .blend file, a plane with 2 shadeless materials, one is white (frame) and the other one is red (inner quad).

- Open .blend
- The red material should be already selected in material properties, so enable 'Transparency'.
- The red square appears on top-right of the plane, and the inner quad is now transparent.


Notes: if I enable 'Transparency' on the white material first, the red quad gets transparent, but if afterwards I enable 'Transparency' on the red material as well, then it works as expected.

Thanks a lot!
Cheers.

Event Timeline

Pablo Vazquez (pablovazquez) edited a custom field.Dec 1 2010, 2:41 PM
Pablo Vazquez (pablovazquez) attached 1 file(s): F13804: glsl_transparencybug.blend.
ronan ducluzeau (zeauro) added a comment.Dec 1 2010, 4:58 PM

ubuntu 10.04 64bit rev 33413
Nvidia Quadro FX 3500, proprietary drivers

I can't reproduce this bug.

Ton Roosendaal (ton) added a comment.Dec 1 2010, 5:28 PM

Can't redo here either, mac osx 10.5 ppc ATI (slow glsl)

Ton Roosendaal (ton) changed the task status from Unknown Status to Unknown Status.Dec 1 2010, 5:28 PM
Ton Roosendaal (ton) added a comment.Dec 1 2010, 7:52 PM

5-6 people tried in irc, sofar no luck. I also recall it was mentioned long ago (yofrankie days) in tracker as well; when you switch render options within 1 object shaders, sometimes things go weird. But why...

Will put in ogl tracker, and notify brecht if he has ideas!

Antonis Ryakiotakis (psy-fi) added a comment.Feb 11 2011, 1:56 PM

I can reproduce.
Ubuntu 10.10
NVIDIA 8400 GS with driver 260.19.36
r34776

Antonis Ryakiotakis (psy-fi) added a comment.Feb 11 2011, 2:03 PM

Another VBO thingie it seems. Turning them off seems to bypass the error. I'll try to tackle this one when i have time.

Antonis Ryakiotakis (psy-fi) added a comment.Apr 20 2011, 5:17 AM

Managed to make something that looks like it works. I'm not going to touch that convoluted code for a while...See attached patch

Antonis Ryakiotakis (psy-fi) attached 1 file(s): F13805: transparent_material.patch.Apr 20 2011, 5:18 AM
Dalai Felinto (dfelinto) added projects: OpenGL Error, GPU / Viewport.Dec 23 2019, 1:35 PM
Clément Foucault (fclem) edited projects, added EEVEE & Viewport; removed GPU / Viewport.Jun 19 2020, 11:33 PM