[Mesa-dev] [PATCH 0/5] Gallium: Passing drirc options to create_screen() and fixing Rocket League

[Rob Clark]

On Tue, Jun 20, 2017 at 6:54 PM, Marek Olšák <maraeo at gmail.com> wrote:
> Hi,
>
> This series updates pipe loaders so that flags such as drirc options
> can be passed to create_screen(). I have compile-tested everything
> except clover.
>
> The first pipe_screen flag is a drirc option to fix incorrect grass
> rendering in Rocket League for radeonsi. Rocket League expects DirectX
> behavior for partial derivative computations after discard/kill, but
> radeonsi implements the more efficient but stricter OpenGL behavior
> and that will remain our default behavior. The new screen flag forces
> radeonsi to use the DX behavior for that game.
>

do we really want this to be a *global* option for the screen?

I'm just thinking, some drivers use lowering passes that internally
generate kill's.  I *guess* it would only matter if they also had
ddx/ddy instructions, but not sure.

not really sure if this would actually be a problem or not..

BR,
-R