+ Caolan, Michael
+ branches - to get merged ...
+ see where we are then ...
+ scroll - and finish scrolling
+ sending two combinetiles -> same location ...
+ not caught by the de-duplication ...
+ double work.
+ a move - and a move-end for every movement.
+ scroll move ...
+ benchmarking ...
+ Noel -> a win for the calc thing we looked at
+ size of document twice - if can re-use it earlier on.
+ JS debugger - to learn how to look at profiles in Chrome.
+ dead time etc.
+ actually doing nothing.
* End to end tracing:
<trace_event desc="The possibility to turn on generation of a Chrome Trace Event file" enable="false">
+ turn on 'Performance tracing' in help -> tripple click.
[ /tmp/foo.json generated ]
-> might be worth a try ...
* Delta / RLE stuff:
+ profile and play
+ can push as is when reviewed without the top patch.
+ page fault handler there a lot in delta its.
+ new bits to play with:
+ move unpremult_copy to the client.
+ look at ImageData alpha premultiplication · Issue #5365 · whatwg/html · GitHub ?
+ can we do pre-multiplied end to end
+ sending the key-frame as a raw dump of the DeltaBitmapRow data
+ and re-constructing in the JS 'applyDelta'
+ near here:
// FIXME: use zstd to de-compress directly into a Uint8ClampedArray
+ applies deltas.
* Calc - comment performance foo
+ had a look at this ...
+ a big json thing ...
* Michael to look at the JS / _tiles stuff ...
* For easy build & debugging:
* /etc/sudoers - un-comment:
## Same thing without a password
%wheel ALL=(ALL) NOPASSWD: ALL
* add to wheel group in /etc/groups
* Looking for back-ports ? ...
+ performance bits -> high bar to put it back.