I'm very interested in knu's ssao and dof. I have mgegui 3.8.0.116, i read that in this version you have to change "thisframe" to "lastshader" also in the first shader. Done. But still does not work. I have hardware shader and update shader variables checked, but still when i turn on the shaders, the screen goes black... Could you help me? Thank you edit: fixed. well i don't really know what was the problem, with phal's d3d8 HUD preserve 1 I got it right.