Rob Clark <robdcl...@gmail.com> writes: > From: Rob Clark <robcl...@freedesktop.org> > > Freedreno and vc4 want this behavior for the time being (until we have > real flow control). Even after that, we probably want to turn this into > some sort of driver tunable threshold, since for at least some hardware, > reasonably large if/else is best flattend rather than having divergent > flow control. > > NOTE: wasn't sure about some of the additional restrictions in > block_check_for_allowed_instrs().. are there some other cases where > I might need to fix things up in order to be guaranteed to be able to > flatten?
Interesting. I'm relying on GLSL IR-level flattening currently, and this might be better than that. Not sure. I'd need flattening of "if (condition) discard;", too, though.
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