[Mesa-dev] [PATCH] radeonsi: implement legacy RCP behavior to fix Unreal engine demos

[Michel Dänzer]

On 11.12.2014 07:49, Roland Scheidegger wrote:
> Odd indeed. Maybe it was really meant for d3d10level9 shaders or
> something (would allow to share more code compiling d3d9 or d3d10
> shaders that way I guess, you could use all the same instructions and
> just set that bit, and you said newer chips don't have the legacy
> instructions so I guess that bit would help if they still have it).
> d3d10 clearly forbids this (and so does GL 4.1 and up).

So at the latest when we get GL 4.1, we probably need some TGSI shader
attribute to tell drivers not to enable this kind of clamping?


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer