<SeoZ> romaxa: hello
<romaxa> SeoZ: pong
<romaxa> https://wiki.mozilla.org/Gecko:Layers
<romaxa> https://wiki.mozilla.org/Gecko:CrossProcessLayers
<SeoZ> romaxa: thanks
<SeoZ> so layer manager does pre-fetching.
<SeoZ> but not tiling?
<romaxa> it does layering :)
<SeoZ> i didn't understand well about that layering things.
<romaxa> and one of the layers type does single-buffer with rotation
<romaxa> basically ThebesLayer is what you are talking about
<romaxa> and that is not really tiled, but has buffer with rotation mechanizm
<SeoZ> rotation mechanism means double buffering?
<romaxa> rotation means similar to traditional scrolling, self-copy + fill missing parts
<romaxa> SeoZ: but with HS accelerated GL backend we have rotation accelerated
<romaxa> SeoZ: in software mode it is something like memmove
<romaxa> https://wiki.mozilla.org/Gecko:Layers#Traditional_Scrolling
<romaxa> All of them mostly double-buffered, because while you painting layer content (expensive) you layer must be always ready to paint... so you need double buffering for each layer
<romaxa> back buffer can be dropped if layer does not have active updates
<SeoZ> ok..