zonet ook in de news submit gegooid , er zijn articals op tweaktown en techpowerup , met verwijzing naar reactie van AMD dat t technisch onmogelijk is om 'echte of full' HDR via HDMI2.0a te sturen
Quote:
10 bits per cell (1.07 billion colors) is a much more desired height to reach for HDR TVs, but the original article made it out to seem like this was a limitation of AMD, and not that of HDMI 2.0 and its inherent limitations. Heise.de said that AMD GPUs reduce output sampling from the "desired Full YCrBr 4: 4: 4 color scanning to 4: 2: 2 or 4: 2: 0 (color-sub-sampling / chroma sub-sampling), when the display is connected over HDMI 2.0. The publication also suspects that the limitation is prevalent on all AMD 'Polaris' GPUs, including the ones that drive game consoles such as the PS4 Pro," reports TPU. I reached out to AMD for clarification, with Antal Tungler - the Senior Manager of Global Technology Marketing, who said t hat this was a limitation of HDMI bandwidth. Tungler said "we have no issues whatsoever doing 4:4:4 10b/c HDR 4K60Hz over Displayport, as it's offering more bandwidth". Tungler added: "4:4:4 10b/c @4K60Hz is not possible through HDMI, but possible and we do support over Displayport. Now, over HDMI we do 4:2:2 12b 4K60Hz which Dolby Vision TVs accept, and we do 4:4:4 8b 4K60Hz, which TVs also can accept as an input. So we support all modes TVs accept. In fact you can switch between these modes in our Settings".
Lekker is dat ! net een OLED TV , amd RX 460 gekocht , met een XB1S en Opp 203 player in de pijplijn voor rond DEC
Las wel zonet dat WIN10 nu nog geen HDR (10b) ondersteund , maar dat wel gaat doen in Q4 voor t Insiders Prog (dus ook voor mij)
en in de grote Q1 public release zal doen
Wat ik niet snap , is dat TV's wel aangeven HDR te ontvangen?! Dus ze doen dat ook bij 8bits 4:2:2 ?
If so... dan is dat oplichting IMO
Ben benieuwd naar feedback !
Quote:
10 bits per cell (1.07 billion colors) is a much more desired height to reach for HDR TVs, but the original article made it out to seem like this was a limitation of AMD, and not that of HDMI 2.0 and its inherent limitations. Heise.de said that AMD GPUs reduce output sampling from the "desired Full YCrBr 4: 4: 4 color scanning to 4: 2: 2 or 4: 2: 0 (color-sub-sampling / chroma sub-sampling), when the display is connected over HDMI 2.0. The publication also suspects that the limitation is prevalent on all AMD 'Polaris' GPUs, including the ones that drive game consoles such as the PS4 Pro," reports TPU. I reached out to AMD for clarification, with Antal Tungler - the Senior Manager of Global Technology Marketing, who said t hat this was a limitation of HDMI bandwidth. Tungler said "we have no issues whatsoever doing 4:4:4 10b/c HDR 4K60Hz over Displayport, as it's offering more bandwidth". Tungler added: "4:4:4 10b/c @4K60Hz is not possible through HDMI, but possible and we do support over Displayport. Now, over HDMI we do 4:2:2 12b 4K60Hz which Dolby Vision TVs accept, and we do 4:4:4 8b 4K60Hz, which TVs also can accept as an input. So we support all modes TVs accept. In fact you can switch between these modes in our Settings".
Lekker is dat ! net een OLED TV , amd RX 460 gekocht , met een XB1S en Opp 203 player in de pijplijn voor rond DEC
Las wel zonet dat WIN10 nu nog geen HDR (10b) ondersteund , maar dat wel gaat doen in Q4 voor t Insiders Prog (dus ook voor mij)
en in de grote Q1 public release zal doen
Wat ik niet snap , is dat TV's wel aangeven HDR te ontvangen?! Dus ze doen dat ook bij 8bits 4:2:2 ?
If so... dan is dat oplichting IMO
Ben benieuwd naar feedback !