| 3 Jan 2024 |
 K900 | Yes, but those are slow | 10:44:04 |
| K900 | Because they rely on the virtualized GPU | 10:44:14 |
 crushing-smite | what makes looking glass fats in comparison to? | 10:44:33 |
| K900 | It's fine for simple workloads but not for games | 10:44:35 |
| K900 | Looking Glass by itself isn't rendering anything | 10:44:52 |
| K900 | Windows is rendering to the passed-through GPU | 10:45:05 |
| K900 | And Looking Glass is recording that and piping it to the host so you can see the output in a window | 10:45:32 |
| K900 | Instead of switching the input on your display | 10:45:40 |
| K900 | Or using a second display or whatever | 10:45:46 |
| crushing-smite | So, looking glass is fast because it has direct memory access to GPU, while stuff like spice-vnc has to wait while rendered stuff gets back to guest, and then it plugs into the videostream? | 10:45:56 |
| K900 | No | 10:46:05 |
| K900 | SPICE doesn't use your real GPU at all | 10:46:15 |
| crushing-smite | I mean, if there is a GPU involved, otherwise, it's just a vnc client | 10:46:35 |
| crushing-smite | * I mean, if there is a GPU involved, regardless of, it's just a vnc client | 10:46:44 |
| crushing-smite | as if I was streaming over the net | 10:47:04 |
| K900 | No, if you pass through a GPU, you'll get no output on SPICE | 10:47:08 |
| crushing-smite | so, a defficiency of a protocol | 10:47:10 |
| K900 | You'll only get output on the monitor connected to the GPU | 10:47:26 |
| crushing-smite | how did people get image from gpu passthrough in the days before looking glass? | 10:48:05 |
| K900 | Because SPICE only works with the virtualized QEMU GPU | 10:48:09 |
| K900 | In reply to @crushing-smite:matrix.org
how did people get image from gpu passthrough in the days before looking glass? They switched the input on their monitor | 10:48:17 |
| crushing-smite | so, directly plugged? | 10:48:25 |
| K900 | You still need to have the monitor plugged into the GPU | 10:48:46 |
| K900 | Even with Looking Glass | 10:48:49 |
| K900 | Because it needs to be rendering somewhere | 10:48:57 |
| crushing-smite | should have sucked back then | 10:48:55 |
| crushing-smite | oh, really? | 10:49:03 |
| K900 | Yes | 10:49:08 |
| crushing-smite | Can I have a virtualized dummy? | 10:49:15 |
| K900 | No | 10:49:18 |
