[PATCH] st/mesa: only define GLSL 1.4 for compat if driver supports it

[Lucas Stach]

Am Mittwoch, den 16.05.2018, 15:31 +0200 schrieb Christian Gmeiner:
> Currently GLSL 1.4 is defined for all gallium drivers even only
> GLSL 1.2 is supported as seen on etnaviv.
> 
> Fixes 4560aad780b ("mesa: add GLSLVersionCompat constant")
> 
> > Signed-off-by: Christian Gmeiner <christian.gmeiner at gmail.com>
> ---
>  src/mesa/state_tracker/st_extensions.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c
> index 19ef736e5b..945ca3a16c 100644
> --- a/src/mesa/state_tracker/st_extensions.c
> +++ b/src/mesa/state_tracker/st_extensions.c
> @@ -936,7 +936,11 @@ void st_init_extensions(struct pipe_screen *screen,
>  
>     /* Figure out GLSL support and set GLSLVersion to it. */
>     consts->GLSLVersion = screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL);
> -   consts->GLSLVersionCompat = 140;
> +
> +   if (consts->GLSLVersion >= 140)
> +      consts->GLSLVersionCompat = 140;
> +   else
> +      consts->GLSLVersionCompat = 120;

A driver might want to expose the intermediate version 130 at some
point. So the compat version should really be min(GLSLVersion, 140) to
cover this, right?

Regards,
Lucas