[PATCH 4/6] d3d9: Keep track of D3DUSAGE_AUTOGENMIPMAP textures in the d3d9 device.

[Józef Kucia]

On Fri, Feb 1, 2019 at 1:00 PM Matteo Bruni <mbruni at codeweavers.com> wrote:
> +        unsigned int i = stage >= D3DVERTEXTEXTURESAMPLER0 ? stage - D3DVERTEXTEXTURESAMPLER0 + 16 : stage;
> +
> +        if (i < D3D9_MAX_TEXTURE_UNITS)
> +        {
> +            if (texture_impl && texture_impl->usage & D3DUSAGE_AUTOGENMIPMAP)
> +                device->auto_mipmaps |= 1u << i;
> +            else
> +                device->auto_mipmaps &= ~(1u << i);
> +        }
> +    }

We probably need to validate the "stage" parameter, otherwise
SetTexture() with stage = 16 updates the "auto_mipmaps" for vertex
texture sampler 0.

> +    while (map)
>      {
> +        i = ffs(map) - 1;
> +        map ^= 1u << i;

wined3d_bit_scan() is preferred.

> +        if ((wined3d_texture = wined3d_device_get_texture(device->wined3d_device, stage))
> +            && (texture = wined3d_texture_get_parent(wined3d_texture))
> +            && texture->usage & D3DUSAGE_AUTOGENMIPMAP)
> +            device->auto_mipmaps |= 1u << i;
> +        else
> +            device->auto_mipmaps &= ~(1u << i);

Formatting.