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QBhd · 12th August 2019, 11:46

I read it and still can't see what the problem is supposed to be. Anyway, it is what it is.

I just realized that my post in the madVR thread earlier should be here. So I will add my request here as well (I know, bad forum etiquette):

I need a little help. I have a R9 270X that is still kicking (even after it died and I baked it in the oven to bring it back to life), It was more than enough when I had my 1024x768 rectangular pixel "720p" Plasma. When That TV died and I replaced it with a 55" LG C8, I tried playing 4k HDR though the PC, but it didn't work and I just chalked it up to a GPU with only 2GB RAM and HDMI 1.4 so since then I played the 4k HDR content using the TV's built in player.

But today I was farting around with a 4k HDR Blu-ray and it worked on the PC. I can even do HDR.... It took a little tweaking to work in super high bitrate scenes. I cranked CPU and GPU queues to the max (48/24) which makes no sense since queues that big make normal playback of 1080p or less a choppy mess, but the 4k HDR plays like silk (and turns into a choppy mess with 16/8 queue default queue depths) plus queues that big should cause serious RAM shortages shouldn't they? This card has just 2GB... it's odd, but I digress.

Now that I realize can "tone map HDR using pixel shaders", I am curious what should I set "target peak nits" to... I read the C8 can do 820 nits, but I don't have a meter to verify. I know there are a few C8 users here, just trying to pick your brains

QB

12th August 2019, 11:46	#10 \| Link
QBhd QB the Slayer Join Date: Feb 2011 Location: Toronto Posts: 697	I read it and still can't see what the problem is supposed to be. Anyway, it is what it is. I just realized that my post in the madVR thread earlier should be here. So I will add my request here as well (I know, bad forum etiquette): I need a little help. I have a R9 270X that is still kicking (even after it died and I baked it in the oven to bring it back to life), It was more than enough when I had my 1024x768 rectangular pixel "720p" Plasma. When That TV died and I replaced it with a 55" LG C8, I tried playing 4k HDR though the PC, but it didn't work and I just chalked it up to a GPU with only 2GB RAM and HDMI 1.4 so since then I played the 4k HDR content using the TV's built in player. But today I was farting around with a 4k HDR Blu-ray and it worked on the PC. I can even do HDR.... It took a little tweaking to work in super high bitrate scenes. I cranked CPU and GPU queues to the max (48/24) which makes no sense since queues that big make normal playback of 1080p or less a choppy mess, but the 4k HDR plays like silk (and turns into a choppy mess with 16/8 queue default queue depths) plus queues that big should cause serious RAM shortages shouldn't they? This card has just 2GB... it's odd, but I digress. Now that I realize can "tone map HDR using pixel shaders", I am curious what should I set "target peak nits" to... I read the C8 can do 820 nits, but I don't have a meter to verify. I know there are a few C8 users here, just trying to pick your brains QB __________________ Last edited by QBhd; 12th August 2019 at 11:50.