[Mesa-dev] [PATCH] r600g: Fix flat/smooth shade state toggle

[Glenn Kennard]

On Wed, 20 Aug 2014 20:16:50 +0200, Marek Olšák <maraeo at gmail.com> wrote:

> Generally, only states which need a full shader compilation must be in
> the shader key. Flatshade is not one of them, because it only causes
> register updates, so this is not a proper solution. Or I am missing
> something?
>
> Marek
>

Evergreen/Cayman need to recompile the shader since the interpolation is  
done using either INTERP_XY instruction for smooth or INTERP_LOAD_P0 for  
flat. R600-R700 technically don't need to, but the prior code already does  
anyway since flat/smooth register setup is done from output values  
computed when compiling the shader.


/Glenn