[PATCH] wined3d: Do not try to use not available texture stages in set_tex_op_nvr

[Stefan Dösinger]

> +    if (stage > (gl_info->limits.texture_stages-1))
> +    {
> +         ERR("Texture stage %d invalid (only %d availables)\n", stage, gl_info->limits.texture_stages);
> +         return;
> +    }
In which situations does this occur? I guess its on some older nvidia GPU.

I don't like the ERR here. If this occurs because an app ignores the d3d limits, then this should be a WARN. If this code is called because some other wined3d code doesn't honor the limits this should be fixed elsewhere. If this code is called correctly, and catching the limit violation in the state setter is the correct thing to do this should be a TRACE(e.g. the state handler is called because device creation dirtifies all states).