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 imrsvjon_damaestro | something i found interesting when looking at the features of the XR2 chip was upscaling in hardware. there are some hints that higher FPS and lower res in the video stream and then doing local upscaling via the XR2 could result in a much better experience | 18:51:57 |
| imrsvjon_damaestro | seems like it has an impact on decoder bandwidth budget too | 18:53:03 |
| imrsvjon_damaestro | * seems like it has an impact on decoder bandwidth budget too (i.e. decoding is faster with lower resolution and the same quality can be achieved with the upscaling, and all of that is faster than just a higher bitrate) | 18:54:25 |
| imrsvjon_damaestro | but of course all of this type of technique is going to be HMD specific | 18:55:15 |
 xytovl | It's not like there's many different chips around | 18:55:42 |
| xytovl | I can see that as a way to reduce PC render resolution with a lower impact on image quality | 18:56:17 |
| imrsvjon_damaestro | yeah, for sure. faster pcvr side render (game engine and video frame) and faster decoding of the video frame into something displayable. i would assume that upscaling happens somewhere after in the pipeline and maybe is just lightning fast one the video decoder is done with it's work | 19:00:51 |
| imrsvjon_damaestro | * yeah, for sure. faster pcvr side render (game engine and video encode frame) and faster decoding of the video frame into something displayable. i would assume that upscaling happens somewhere after in the pipeline and maybe is just lightning fast one the video decoder is done with it's work | 19:01:05 |
| imrsvjon_damaestro | * yeah, for sure. faster pcvr side render (game engine and video encode frame) and faster decoding of the video frame into something displayable. i would assume that upscaling happens somewhere after in the pipeline and maybe is just lightning fast once the video decoder is done with it's work | 19:01:22 |
| imrsvjon_damaestro | * yeah, for sure. faster pcvr side render (game engine and video encode frame) and faster decoding of the video frame into something displayable on the HMD side. i would assume that upscaling happens somewhere after in the pipeline and maybe is just lightning fast once the video decoder is done with it's work | 19:04:31 |
| imrsvjon_damaestro | i've always stayed away from upscaling stuff as my brain seems to be able to tell, but that's mainly in large display areas (large TVs) and i've usually chose to just run at a lower native resolution instead | 19:06:54 |
| imrsvjon_damaestro | and some device upscaling is insanely garbage and only good for linear display stream, not anything interactive | 19:07:30 |
| imrsvjon_damaestro | i would hope with the XR2, it'd be designed for interactive sensitive latencies | 19:07:59 |
| xytovl | For XR2 and similar devices, the issue is that the GPU is so poor that you can't render near native resolution at the display framerate | 19:10:43 |
| imrsvjon_damaestro | yeah, which is partly why up-scaling piqued my interest | 19:11:46 |
| xytovl | For streaming, GPU may be able to do full resolution at optimal refresh rate, and headset only has to decode and display. It is not able to decode at full resolution, but foveated encoding works pretty well | 19:11:58 |
| imrsvjon_damaestro | yeah, foveated encoding is super important | 19:12:27 |
| xytovl | It is not efficient pixel-wise, because you discard almost half the pixels | 19:12:29 |
