Living on the trailing edge of technology (my Digital Audio Power Mac is from 2001, my Mirror Drive Door from 2002), I wasn't aware of the steep hardware requirements for Photoshop CS4 - until this morning. Someone with a Power Mac G5 (the 2003 version) installed CS4 and got a message that his video card wasn't good enough.
It turns out that Photoshop requires OpenGL 2.0 and Shader 3.0 support these days, which the G5's old video card doesn't support. Of course, nowadays AGP is old technology, so finding a more modern card that's supported may be a challenge. Funny thing is, Adobe says CS4 is compatible with Mac OS X 10.4.11, but OpenGL 2.0 is only supported in 10.5 and later [on PowerPC Macs].
See http://developer.apple.com/graphicsimaging/opengl/capabilities/ for a huge chart listing which video cards/graphic processors support what levels of OpenGL - but with no indication if those cards are AGP or PCI-e. Sigh.
Another day, another learning experience. :-)
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Seems like OpenGL 2.0 does work with Intel 10.4.11, from the table.
ReplyDeleteOpenGL 2.0 is only supported on Intel-based Macs. For PowerPC Macs, such as the Power Mac G5 in this instance, OpenGL 1.5 is the last version supported.
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