lam@sheila.arc.nasa.gov (Tony To Lam FSN) (12/06/90)
I have couple questions regarding the system upgrade for the 4D machine. 1, Is it possible to mix 2 25 MHZ and 2 33 MHZ cpu in a system? If so, what would be the restriction on their use? 2, There is an option called 'Multibuffer' available along with the VGX. It provides an additional 64 Texture bit planes. How do these extra 64 bits work with the 32 bits already in the VGX? Through what gl commands do you use to access these extra bit planes? Could someone provide me the insight? Thanks Tony
gavin@krypton.asd.sgi.com (Gavin Bell) (12/14/90)
In <1990Dec5.231722.12287@riacs.edu> lam@sheila.arc.nasa.gov (Tony To Lam FSN) writes: >2, There is an option called 'Multibuffer' available along with the VGX. > It provides an additional 64 Texture bit planes. How do these extra > 64 bits work with the 32 bits already in the VGX? Through what gl > commands do you use to access these extra bit planes? The extra texture bitplanes will be used automatically; they allow more textures to be stored in the graphics bitplanes, so the GL won't have to swap textures from main memory as often. The multibuffer option also gives you accumulation buffer capabilities (motion blur, full scene anti-aliasing, and other interesting stuff); see the acbuf(3G) manual page for more information. -- --gavin (gavin@sgi.com, (415)335-1024)