1270262 - Fading tiles are faded from black instead of the bg color

Status: RESOLVED INVALID

(Core :: Graphics: Layers, defect, P3)

Description

[James Willcox (:snorp) ([e-mail]) (he/him)]

On desktop, if you enable progressive painting and fading tiles (layers.tiles.fade-in.enabled), the tiles are faded from black instead of the page bg color. Fennec has stuff in its Java compositor to pull the bg color and clear to that first, but it seems to occassionally happen there too.

I guess we would need the same clear-to-bgcolor logic in the Compositor instead of only having it on Fennec. I think we most likely also need to disable the fading tiles if the page has a background image, but I'll file that separately. I guess that could still work if the background is layerized separately.