SSAO performance?

using a default geo and render OPs, if I append an ssao TOP (default settings, except it uses full ssao resolution), my performance drops to 30 fps on a gtx 460m. Is such a big performance hit expected on a 460m? i don’t currently have access to another machine for comparison, so maybe that hardware is just not powerful enough. But I expected a 460m to deliver a bit more performance, so maybe something is “wrong/slow” with your SSAO implementation on a 460m (just a thought, as in the previous build it didn’t work at all …)?

thx

I’ll do some tests to see, but full res SSAO is pretty expensive. The key about SSAO is that it’s the same cost regardless of the complexity of your scene, so you can add all kinds of geometry to your scene and the SSAO part won’t get progressively slower.