Keys refering to "Ambient occlusion" settings:
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Video\{xxx}\0000]
"D3D_AO_MODE"=hex:03,00,00,00 high
"D3D_AO_MODE"=hex:02,00,00,00 medium
"D3D_AO_MODE"=hex:01,00,00,00 low
"D3D_AO_MODE"=hex:00,00,00,00 off
Quick tests:
new extensions available:
GL_NV_vertex_buffer_unified_memory
GL_NV_shader_buffer_load
Furmark, Fluidmark & GPUCapsViewer run fine
AO=high has no impact on Furmark, 3DMark06 or PTBoats DX10
Cryostasis DX10 demo runs a 3rd slower with AO=high
Massive artifacts with either AO=high or AO=off
Call of Juarez DX10 benchmark @ 1680x1050
------- min. max. avg. FPS
AO=off 11.2 37.7 21.2
AO=high 8 19 12
World in Conflict DX10 benchmark
Setting = very high details @ 1680x1050
-------- avg. min. max.
AO=off 31 17 59
AO=high 14 9 25
I didn't spot dramatical visual differences though.