1201777 - Make TextureClient::BorrowDrawTarget() work for off-main thread painting

Status: RESOLVED WONTFIX

(Core :: Graphics: Layers, defect)

Description

[Jerry Shih[:jerry] (UTC+8) (inactive)]

As https://bugzilla.mozilla.org/show_bug.cgi?id=1176363#c3 , TextureClient::BorrowDrawTarget() can only be called on the main thread because of threading problem.

In [1], I will try to get the drawTarget at painting thread and hit the assertion.
This bug try to handle the threading problem for BorrowDrawTarget().

[1]
https://bugzilla.mozilla.org/attachment.cgi?id=8653877

Comment 1

[Jerry Shih[:jerry] (UTC+8) (inactive)]

The assertion in TextureClient::BorrowDrawTarget():

https://hg.mozilla.org/mozilla-central/annotate/a6786bf8d71d4cf40c3d40e06d8e3c9866863475/gfx/layers/client/TextureClient.cpp#l836

Comment 2

[Matt Woodrow (:mattwoodrow)]

Bas and I talked about this tonight.

We should be able to have thread specific d2d devices to support this, Bas has a plan.

Comment 3

[Bas Schouten (:bas.schouten)]

(In reply to Matt Woodrow (:mattwoodrow) from comment #2)
> Bas and I talked about this tonight.
> 
> We should be able to have thread specific d2d devices to support this, Bas
> has a plan.

Right, the plan involved some work though, it will need to be prioritized.