Problems with viewport shading on 2.78 and PBR branch on Mac OSX

[thadeuluz]

I looked everywhere for people in a similar problem, but I didn’t find any.

The example scenes I could find showcasing the new PBR viewport on blender 2.78 doesn’t work on my mac. Neither does Clement Foucault’s PBR branch examples. These problems are probably related.

The weirdest thing is that the material preview works as expected…

I’m curious if other people are having the same issues and hoping to find a solution.

Scenes from http://www.cgmasters.net/free-tutorials/realtime-pbr-in-blender/ and http://www.clement-foucault.com/#blender_pbr

Thanks.
I apologize in advance if this is being discussed somewhere I couldn’t find.

[tysonhh]

Same here. I’m using a mac and that looks to be the exact problem I’m having. Working in material preview, black in the viewport.

[thadeuluz]

Terminal throws

GPUShader: linking error:
ERROR: Implementation limit of 16 active fragment shader samplers (e.g., maximum number of supported image units) exceeded, fragment shader uses 22 samplers