[Bf-committers] Where did OpenGL dither go?

[Ton Roosendaal]

Hi all,

Someone pointed me at the banding, visible in shaded 3d viewports with greyscales.
None of the systems I tried (mac nvidia, mac ati, linux nvidia) shows any dither in the viewport... and there's nothing in the code pointing at being disabled.

I checked it with a print in the graded backdrop drawing:
printf("dither is %d\n", glIsEnabled(GL_DITHER));

And it says it's on.

Screenie, with expanded color range to see the banding:
http://www.pasteall.org/pic/52953

Shouldn't it show a nice stipple pattern? I recall this, but more like from 10 years ago or so :)

Googling about it didn't give me info about this feature being dropped in drivers nowadays.

-Ton-

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Ton Roosendaal  -  ton at blender.org   -   www.blender.org
Chairman Blender Foundation - Producer Blender Institute
Entrepotdok 57A  -  1018AD Amsterdam  -  The Netherlands