I’ve been trying to use nVidia SLI settings in minecraft so I can run high-quality shaders without performance loss. I can force SLI on java which I thought would really help, but it has more than halved my performance from just one of my GPUs.
The only place I can find that mentions this kind of problem in OpenGL games is here.
http://www.java-gaming.org/index.php?topic=28604.0
ARBInvalidateSubdata sounds really handy to have working on something like this. Can anyone explain how to use it though? or is it even still viable being from 2 years ago?