2017-01-12 23:41 GMT+01:00 Axel Davy <axel.d...@ens.fr>: >> Do you refer to the d3d9 MAD or the hardware instruction? If the >> former, just generating MUL and ADD separately should do the trick. In >> the latter case, I guess that means the "NaN switch" should also >> affect code generation (although I think that should be already >> covered by the "precise" qualifier.) >> > all radeon card released so far have special instructions for both mul and > mad to have 0*inf = 0. > > > I guess you'd need some gl extension to use them if available.
I see. Does it need to be a separate extension though? I.e. isn't it enough if the driver uses those special instructions when we don't want NaN and use the normal instructions otherwise? _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev
