1692735 - Testcase gets corrupted or crashes (but no crash report is generated)

Status: RESOLVED DUPLICATE of bug 1501545

(Core :: Graphics: WebRender, defect)

Description

[Mayank Bansal]

Attachment: testcase.html

Use WR on nightly.
Open the attached testcase
On the left there will be a dropdown. Click on that dropdown and select "40"
Wait for 20-30 seconds

AR: The tab becomes black/green/corrupted. It kind of looks like a crash, but no crash report is generated.
Prior to this regression, the page would not become corrupt.

This testcase is 100% artificial, so feel free to WONTFIX or INVALID.

Comment 1

[Mayank Bansal]

Attachment: about:support

Comment 2

[Sotaro Ikeda [:sotaro]]

:nical, can you comment to the bug?

Comment 3

[BugBot [:suhaib / :marco/ :calixte]]

Set release status flags based on info from the regressing bug 1688180

Comment 4

[Emilio Cobos Álvarez (:emilio)]

I did get a crash report fwiw: https://crash-stats.mozilla.org/report/index/168750de-b4c9-447e-b216-067430210215

Comment 5

[Sotaro Ikeda [:sotaro]]

It seems that crash reports were generated with swgl.

Comment 6

[Sotaro Ikeda [:sotaro]]

I saw the following message to logout. The STR made fallback to SW-WR and caused oom crash.

[GFX1-]: Attempting to allocate a texture of size 1024x8490 above the limit, trimming
[2021-02-18T07:17:08Z ERROR webrender::device::gl] Attempting to allocate a texture of size 1024x8490 above the limit, trimming
[GFX1-]: wr_renderer_render: MaxTextureSize
[GFX1-]: Fallback WR to SW-WR + D3D11

Comment 7

[Mayank Bansal]

This looks like a dupe of bug 1501545 .
Depending on the code movement and heuristics, the testcase may start crashing, or get corrupted. I will dupe it to bug 1501545 , where there was some discussion on analysing this testcase.