I'm just curious...
but are you looking to filter all rendering? Or just some rendering
for a certain application? If it's the latter, then you should
probably look at using something like CoreImage instead...
If you want to filter all rendering, then yes you may have to drop to
the kext level.
You may also be able to flip some flags on the GPU to have it filter
all rendering (i'm not sure if such is possible)... again, instead of
doing your own (possibly slower filtering in the kext on the CPU.
-eric
On 25.05.2005, at 00:28, Anshul Makkar wrote:
hello ,
I have to write an application whether user space/kernel space
that should filter the rendering that is being done on the screen ,
Now the flow that we understood is Aqua will generate the calls
for Quartz and the further Quartz will generate calls for the
underlying driver .
Now the point we are unclear about is , what are these interface ie
interface for communication between application and quartz and of
between quartz and driver .
Mac OS provides standard graphics family which export certain
interfaces . Now OS has to generate calls for these interfaces , but
these interfaces were never getting hit during the debugging.
When we put break points in graphics kext , the break points were
hit . But the functions that were being called for eg
allocate_texture() etc t are not there in the standard graphics family.
This led us to conclusion that these may be the private function of
graphics kext . But OS doesnt know about the private functions of
graphics kext , so how the calls are being routed to graphics kext
private function ? How OS standard calls are being mapped to
graphics kext private functions ??
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