In a complete very surprising move, Adobe CS4 includes 64-bit support for the Windows XP and Vista platform, but not for Mac.
According to Adobe's Photoshop product manager, John Nack, Mac OS X users won't get 64-bit support until the next release of the graphics editing software, CS5.
Nack attributes this dichotomy to the decision Apple made last year to stop development of 64-bit support for Carbon, a move which he says took Adobe and third-party developers by surprise. Adobe did make CS3 Intel-compatible, but has maintained Carbon as its core architecture.
In a recent blog entry Nack wrote, "At the WWDC show last June, [Adobe and] other developers learned that Apple had decided to stop their Carbon 64 efforts. This means that 64-bit Mac apps need to be written to use Cocoa [instead of] Carbon".
"We'll need to rewrite large parts of Photoshop and its plug-ins (potentially affecting over a million lines of code) to move it from Carbon to Cocoa."
As Nack sees it, 64-bit support in Photoshop will offer the biggest speed advantages for working with massive images on systems with RAM of about 32GB and up. However, normal users could see an 8% to 12% performance increase when using 64-bit versions of Adobe's software compared to 32-bit copies.
Regrettably this means Mac OS X users will not be able to take advantage of the performance gains in CS4; those who do manipulate massive images on their Mac's may need to use Windows until CS5 is released further down the road.
A Note: Ironically, when Photoshop was initially released back in 1988, the software was available for Macintosh only. The product didn't even ship for Microsoft's platform until 1992, when Adobe ported Photoshop 2.0 to Windows. - 16732
According to Adobe's Photoshop product manager, John Nack, Mac OS X users won't get 64-bit support until the next release of the graphics editing software, CS5.
Nack attributes this dichotomy to the decision Apple made last year to stop development of 64-bit support for Carbon, a move which he says took Adobe and third-party developers by surprise. Adobe did make CS3 Intel-compatible, but has maintained Carbon as its core architecture.
In a recent blog entry Nack wrote, "At the WWDC show last June, [Adobe and] other developers learned that Apple had decided to stop their Carbon 64 efforts. This means that 64-bit Mac apps need to be written to use Cocoa [instead of] Carbon".
"We'll need to rewrite large parts of Photoshop and its plug-ins (potentially affecting over a million lines of code) to move it from Carbon to Cocoa."
As Nack sees it, 64-bit support in Photoshop will offer the biggest speed advantages for working with massive images on systems with RAM of about 32GB and up. However, normal users could see an 8% to 12% performance increase when using 64-bit versions of Adobe's software compared to 32-bit copies.
Regrettably this means Mac OS X users will not be able to take advantage of the performance gains in CS4; those who do manipulate massive images on their Mac's may need to use Windows until CS5 is released further down the road.
A Note: Ironically, when Photoshop was initially released back in 1988, the software was available for Macintosh only. The product didn't even ship for Microsoft's platform until 1992, when Adobe ported Photoshop 2.0 to Windows. - 16732
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