Dynamic indirect lighting
I got the indirect lighting to work correctly. There were some stupid bugs in my SH code. In the screenshots I use a 3x3x3 grid of sampling points (see last post) and one bonce of indirect light. There is also a (very) small constant ambient term so that no surfaces are completely black. Combined with SSAO it looks quite nice.
The scene is simple and HDR is deactivated so that the lighting effects is more apparent.