The PIE issue should be fixed by the later dev releases - you can use the dolphin-9999 ebuild to track the current upstream git master. This is generally the recommended method anyway, as the dolphin 'development' releases are mostly stable (as "broken" code likely gets fixed in PRs before it's merged anyway).
EDIT: from your forum post it seems your whole system OpenGL is broken, and you can't even run glxgears. It's doesn't seem like dolphin is the real issue.
(I though when using switchable graphics you should set the default opengl implementation to the integrated graphics - so mesa not nvidia's drivers should be set using "eselect opengl"?)
EDIT: from your forum post it seems your whole system OpenGL is broken, and you can't even run glxgears. It's doesn't seem like dolphin is the real issue.
(I though when using switchable graphics you should set the default opengl implementation to the integrated graphics - so mesa not nvidia's drivers should be set using "eselect opengl"?)