RGBA 48 bits with db at 1280*1024 works on V10?

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bkd
Posts: 26
Joined: Tue Jul 13, 2010 12:57 am

RGBA 48 bits with db at 1280*1024 works on V10?

Unread postby bkd » Sun Apr 30, 2017 11:50 pm

I wonder can one select such a mode? We have on (all?) VPro 128 bits per pixel. Take 48 bits RGBA first color buffer and take second again 48 bits. The sum is 96. And we have exactly 32 bits left for Z-buffer (24 bit + stencil). But glxinfo shows only 10/10/10/2. Why? Even on IMPACT I can select 12/12/12, but without alpha of course. Is it marketing or I missed something technical?

PS: maybe accumulation buffer can prevents such a scheme but on V12 we have the same 128 (?) bits per pixel and it works somehow... I don't understand...

bkd
Posts: 26
Joined: Tue Jul 13, 2010 12:57 am

Re: RGBA 48 bits with db at 1280*1024 works on V10?

Unread postby bkd » Sat May 13, 2017 9:16 pm

About V12: can someone explain why in maximum possible framebuffer quality 12/12/12/12 db there is ONLY 16 bit depth buffer? Why? I also think about marketing (V12 vs. IR) because there is enough memory left for at least 24 bit depth buffer.


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