r.AmbientOcclusion.Compute

If SSAO should use ComputeShader (not available on all platforms) or PixelShaderThe [Async] Compute Shader version is WIP, not optimized, requires hardware support (not mobile/DX10/OpenGL3)does not use normals which allows it to run right after EarlyZPass (better performance when used with AyncComputeAyncCompute is currently only functional on PS4 0: PixelShader (default 1: (WIP) Use ComputeShader if possible, otherwise fall back to '0 2: (WIP) Use AsyncCompute if efficient, otherwise fall back to '1 3: (WIP) Use AsyncCompute if possible, otherwise fall back to '1'