The bilinear lowres scale effect was using 'output' for a variable, which is apparently a reserved keyword in GLSL on macs. This slipped by me due to the fact that this didn't occur with OpenGL on my windows machine.
The bilinear lowres scale effect was using 'output' for a variable, which is apparently a reserved keyword in GLSL on macs. This slipped by me due to the fact that this didn't occur with OpenGL on my windows machine.