nir, radeonsi: add lowering from FS LAYER to LAYER_ID sysval, enable in radeonsi, optimize
The first 2 commits are for NIR.
The rest is for AMD drivers. The st/mesa fix probably doesn't affect anything else.
Edited by Marek Olšák
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The first 2 commits are for NIR.
The rest is for AMD drivers. The st/mesa fix probably doesn't affect anything else.