1645124 - Frequent batch breaks caused by glyphs in different texture cache arrays

Status: RESOLVED FIXED

(Core :: Graphics: WebRender, enhancement, P3)

Description

[Nicolas Silva [:nical]]

I am seeing multiple batch breaks per frame on some pages where we intersect an incompatible batch after failing to add to a batch of the same type that use a different texture. For images this is expected in a lot of cases as anythign above 512px will get a standalon entry and never be batched, but I also see a lot of it with text runs which would ideally have all glyphs in the same texture array.

It's happening a lot with non-sub-px-aa text because the default texture array layer count for alpha textures is only 4.

Comment 1

[Nicolas Silva [:nical]]

Attachment: Bug 1645124 - Bump the number of layers per alpha texture array from 4 to 8. r=gw

This prevent frequent batch breaks with non-sub-px-aa text runs.

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/c79c961c7bfd
Bump the number of layers per alpha texture array from 4 to 8. r=gw

Comment 3

[Narcis Beleuzu [:NarcisB]]

https://hg.mozilla.org/mozilla-central/rev/c79c961c7bfd