On Wed, Apr 14, 2021 at 06:36:55AM +0000, Zhang, Tina wrote: > Hi Gerd, > > Speaking of the modifier, we notice that the virtio-gpu driver's > mode_config.allow_fb_modifiers = false, which means virtio-gpu doesn't > support modifier. With mode_config.allow_fb_modifiers=false, the DRM > Modifier API would fail. > > So, do you know if there is any concern about letting virito-gpu allow > modifiers? Thanks. Well, virtio-gpu must also provide a list of modifiers then. We need some way for virtio-gpu to figure which modifiers are supported by the host and which are not. Otherwise we could list LINEAR only which doesn't buy us much ;) Not sure whenever virglrenderer allows that already (via VIRGL_CCMD*QUERY* or via virgl caps). If not we could define a new modifiers capability for that, which could then be used for both virgl and non-virgl mode. take care, Gerd _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
