Thanks Alfonse, that’s so pro I must have missed it when I have last read the spec… or maybe I’ve forgot it already – I read it last time like yesterday ;). Or maybe I tied to solve this in a similar way as the bug with missing coherent keyword, that I fixed by adding #extension GL_NV_gpu_shader5 : enable. And I am pretty sure that coherent is part of GL_EXT_shader_image_load_store.
I am pretty sure that it doesn’t work with 262.99 Chris – that was the first driver that I have tried with GTX 580.
Sorry for being so harsh guys, but I get really frustrated with this bugs.
Jep, the version numbers on nvidia drivers sadly almost never means something in regard to the OpenGL implementation they offer. So the 262.xx seems to come from another driver branch than the devel beta drivers (260.93, 261.00). I must have mistaken the 262.xx driver to support it. The other two definitely support it, but they do not support the GTX 580.