Date: Tue, 25 Jun 2019 14:43:51 -0400 From: Jung-uk Kim <jkim@FreeBSD.org> To: Johannes Lundberg <johalun@FreeBSD.org> Cc: vbox@freebsd.org, FreeBSD X11 <x11@FreeBSD.org> Subject: Re: Accelerated graphics in vbox 6 Message-ID: <a42b0076-1cd3-e9f5-a983-16a2cc425e82@FreeBSD.org> In-Reply-To: <1441b58b-2fc1-381b-9db0-e28d4677436d@FreeBSD.org> References: <4a697e5a-8ecc-cda9-6f80-3e78d09c924f@FreeBSD.org> <874a0def-1e1e-971b-ae65-4e700295a9e9@FreeBSD.org> <d2bc45b6-171d-01d9-4962-ab4665111003@FreeBSD.org> <c021b0dc-b909-cca7-8d7f-9bb61c23e32b@FreeBSD.org> <a26e5ea8-e1c1-1546-83fb-0a853729a7ff@FreeBSD.org> <1441b58b-2fc1-381b-9db0-e28d4677436d@FreeBSD.org>
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On 19. 6. 25., Johannes Lundberg wrote: > On 6/25/19 10:47 AM, Jung-uk Kim wrote: >> On 19. 5. 21., Jung-uk Kim wrote: >>> On 19. 5. 21., Johannes Lundberg wrote: >>>> Hi >>>> >>>> On 5/21/19 11:46 AM, Jung-uk Kim wrote: >>>>> On 19. 5. 21., Johannes Lundberg wrote: >>>>>> Hi vbox folks! (cc: x11 list) >>>>>> >>>>>> According to this >>>>>> https://www.phoronix.com/scan.php?page=article&item=virtualbox-60-vmsvga&num=1 >>>>>> vbox can now use the vmwgfx kernel driver for accelerated graphics. With >>>>>> that I assume that virtualbox's own drm driver project is scrapped. >>>>> Actually, they moved vboxvideo KMS/DRM driver to Linux kernel. >>>>> >>>>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/gpu/drm/vboxvideo >>>> It's been there for quite some time and no progress have been made for >>>> the time I've been tracking it. Seems abandoned to me and my impression >>>> is that that one is scrapped in favor of vmwgfx... Do anyone know if >>>> vboxvideo is suppose to be in working state (the one in linux kernel)? >>> It was added to staging for almost two years ago. Please see the >>> original patch submission. >>> >>> https://lwn.net/Articles/726355/ >>> >>> Recently they moved it out of staging (via merging drm-next-2019-05-09). >>> >>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=131abc56e1bacef23cb7b340519d36e2f5adb2a9 >>> >>> It means Linux 5.2 release will have it by default. >>> >>> It doesn't look dead to me. ;-) >>> >>>>> And DDX driver was moved to Xorg repository. >>>>> >>>>> https://cgit.freedesktop.org/xorg/driver/xf86-video-vbox >>>>> >>>>>> I've been working on porting vmwgfx from Linux to our linuxkpi. It works >>>>>> pretty well with freebsd 13 as vmware guest on macos as long you're >>>>>> using only one vcpu (some race condition issue to be solved..). It >>>>>> would be cool if we could get accelerated graphics in vbox, with freebsd >>>>>> as both host and guest since vmware can't run as host on freebsd. >>>>> Can you please port the vboxvideo driver to linuxkpi? >>>> vmwgfx seems like the better choice if it's used by both vmware and vbox >>>> (v6+). But if it's suppose to be in a working state I can take a look.. >>> ... >>> >>> AFAIK VirtualBox graphics stack is in a working state. >> I found it is ported now. >> >> https://github.com/FreeBSDDesktop/kms-drm/commits/drm-v5.0 >> >> I tried it and it's somewhat working, thanks! > > Hi! So you found it :) The reason I ported it now was that I realized > that vboxideo does not build anymore with Xorg 1.20. Maybe it's > deprecated in favor of KMS+modesetting? Yes, correct. https://www.virtualbox.org/wiki/Guest_resizing o vboxvideo_drv.so: ... It is supported up to X.Org Server 1.18. So X.Org 1.19 and later cannot be used with Linux 3.10 and earlier except with fall-back graphics. >> However, I found two problems. >> >> 1. Console does not refresh automatically. >> >> When vboxvideo.ko is loaded, console stays black. Console preview looks >> fine, though. I found it's redrawn when the window is resized. Note I >> only tried it on a Windows host. I will try it with FreeBSD host soon >> but I think it'll be the same. > > Yeah I've been trying to debug this but it's somewhat tricky... Same > issue on VMWare. On VMWare I ended up copying the whole fb driver from > the kernel to the vmwgfx driver so I can refresh the screen without > adding extra KPI in the kernel (as a temporary solution). Need to figure > out why it works on real hardware but not in VMs.. It might just be > something simple... > >> 2. Console does not resize dynamically. >> >> Actually, it is not vboxvideo.ko's fault. It happens because vt(4) does >> not support monitor hotplug. >> >> https://www.virtualbox.org/wiki/Guest_resizing >> >> After I tried it out, I realized vboxvideo.ko is just a KMS driver and >> modesetting driver is used for X.org. IOW, we cannot resize X.org >> window dynamically when vboxvideo.ko is used. With vboxvideo.ko or >> vboxvideo_drv.so, 3D acceleration is still handled by the Chromium >> OpenGL pass-through stub. As always, it may be enabled with setting >> OPENGL option for emulators/virtualbox-ose-additions. > > Yeah it would be nice to have the guest resize when resizing the window > on the host. Do you mean that this functionality is missing in the > modesetting ddx? Modesetting DDX runs on fb driver, e.g., efifb, which must have a way to resize. IOW, if the fb driver cannot resize, modesetting driver cannot do anything about it. Jung-uk Kim >> BTW, Phoronix once reported 3D acceleration with VMware driver does not >> look good on VirtualBox anyway. :-p >> >> http://www.phoronix.com/vr.php?view=27348
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