Apple

when you have one accelerator with multiple framebuffers, there are keys in the framebuffer objects that point to the accelerator. IOAccelFindAccelerator makes use of the those keys to turn a framebuffer object to a (accelerator, framebuffer index) pair.

Godfrey

From: Jens von der Heydt <email@hidden>
Date: June 2, 2005 12:57:06 PDT

Hi,

I'm developing my own graphics driver, with IOFramebuffer and an adjusted CFPlugin for
acceleration. I'm posting this question to this specific groups because I feel it's not
a driver related question but more a kernel specific architecture question.

I'm missing a deeper understanding on how the graphics system of OS X is started.

My IOFramebuffer implementation gets loaded, starts working, through it's connection
in the info.plist file, my IOCFPlugin for acceleration gets loaded, probed and started.

I know that I had to run IOAccelFindAccelerator in the start method, but I don't
know what this call is supposed to achieve at all. Could anybody please
"enlighten" me there ?