[Spice-devel] need help explaining the algorithm

[Zihao Miao]

Hi, list:
This is my first post to a mail list.. so..
I am a college student and I am very interested in the algorithm that
maintains the current ring of drawables to reduce the display data
transfer. I currently read the code through the  trace of
disolay_channel_process_draw->display_channel_add_drawable->current_add->exclude_region->__exclude_region,
and gained some understanding of the code.
However, I still don't quite get the concept of the difference between a
draw item and a container? And there are questions like why
current_add_with_shadow is much more complicated than the current_add; what
did the pip actually send? a drawable or the whole surface? where do
compression come in?...
Do you guys have any resources besides the newbee and spice protocol
document to learn about this algorithm?
Best wishes!
Zihao Miao
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