On 2002-11-13 15:07, "Albert W D'Amanda" <[EMAIL PROTECTED]> wrote:
> Let me give you the bad news about Quartz on non G4 / AGP machines > > I installed the PCI Radeon 7000 Mac Edition on my B&W/ G4 using X.2.1( wanted > S video capability for DVD playback to TV) > > Installed the "hack" for Quartz Extreme > > Using SpeedRun, Graphics; > > W/O hack 228 > With Hack 68 That's because Quartz Extreme speeds up the Aqua interface, at the cost of OpenGL performance. Some of the window display functions are offloaded onto the OpenGL accelerator on your graphics card. Since most people never use the OpenGL hardware acceleration capability in their machines to the max, they won't notice this. But a benchmark will seek out the difference immediately. > Making a long story short and reading all related posts on list ; my personal > conclusion bullets: > > * PCI bus on G3 machines is not fast enough ( bandwidth) for proper QE > operation (graphics) Not quite. PCI-66 is just about on par with 2xAGP. But PCI doesn't provide access to main memory for texture storage, while AGP does. Since juggling textures, texture memory is of paramount importance to Quartz Extreme. I suspect this is the reason Apple chose to disable QE on anything but AGP machines. Running QE with less than 32 MB of VRAM is not to be recommended, either. > * Graphics performance with Hack is degraded by a factor of ~3 OpenGL performance is degraded. Interface processing is unloaded from the CPU onto the GPU. ,xtG .tsooJ -- Joost van de Griek http://www.jvdg.net/ -- G-List is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- We have Apple Refurbished Monitors in stock! | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> G-List list info: <http://lowendmac.com/lists/g-list.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:g-list@;mail.maclaunch.com> To unsubscribe, email: <mailto:g-list-off@;mail.maclaunch.com> For digest mode, email: <mailto:g-list-digest@;mail.maclaunch.com> Subscription questions: <mailto:listmom@;lemlists.com> Archive: <http://www.mail-archive.com/g-list%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
