I'm getting into trouble when I try to use textureCube in my fragment program. I've checked that my cubemap creation should be fine, no errors there. I get a valid uniform location for my samplerCube, but as soon as I try to use textureCube in my fragment program I get no output (no object rendered). So I figure it must be me or the driver ... I have Radeon X700 with Catalyst 6.1 (OpenGL version 184.108.40.20629), maybe this is something I should update? Or am I missing some 'obvious' thing like do I have to use glActiveTexture(GL_TEXTURE0) for cubemaps...?