[PATCH 4/7] wined3d: Implement depth bias clamp.

[Matteo Bruni]

On Mon, Oct 8, 2018 at 8:26 PM Henri Verbeet <hverbeet at codeweavers.com> wrote:
> @@ -1254,7 +1255,9 @@ static enum wined3d_feature_level feature_level_from_caps(const struct wined3d_g
>      shader_model = min(shader_model, max(shader_caps->hs_version, 4));
>      shader_model = min(shader_model, max(shader_caps->ds_version, 4));
>
> -    if (gl_info->supported[WINED3D_GL_VERSION_3_2] && gl_info->supported[ARB_SAMPLER_OBJECTS])
> +    if (gl_info->supported[WINED3D_GL_VERSION_3_2]
> +            && gl_info->supported[ARB_POLYGON_OFFSET_CLAMP]
> +            && gl_info->supported[ARB_SAMPLER_OBJECTS])
>      {
>          if (shader_model >= 5
>                  && gl_info->supported[ARB_DRAW_INDIRECT]

That kills d3d10 support on macOS. I know that it was a partial lie
before anyway, but still...

Probably less of an issue, it also kills d3d10+ on older Mesa. Would
you like / accept a patch adding a fallback to
EXT_polygon_offset_clamp?