1629704 - Rotate vertex data textures per frame

Status: RESOLVED FIXED

(Core :: Graphics: WebRender, task)

Comment 1

[Glenn Watson [:gw]]

Attachment: Bug 1629704 - Rotate vertex data textures per frame.

On some (primarily older, integrated) drivers, we see significant
time in CPU stalls during updates to the vertex data textures.

As a short term fix, this patch creates an array of vertex data
textures, and rotates which set of them are in use each frame.

There are better long-term options (such as porting the GPU cache
scatter method, or perhaps using UBO/SSBOs here), but this is a
simple workaround for now.

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/b396f2b243fd
Rotate vertex data textures per frame. r=Bert,kvark

Comment 3

[Andrei Ciure[:aciure]]

https://hg.mozilla.org/mozilla-central/rev/b396f2b243fd