1655408 - Sketchfab main 3D models - not displayed in preview/print (black container)

Status: RESOLVED DUPLICATE of bug 976173

(Core :: Graphics: CanvasWebGL, defect)

Description

[Cristian Fogel [:cfogel]]

Attachment: Screenshot 0002-07-27 at 11.59.16.png

Affected versions

• 68.11 esr, 78.0.2, 79.0b9, 80.0a1(2020-07-23);

Affected platforms

• macOS 10.15, Windows 10, Ubuntu 18;

Steps to reproduce

1. Launch Firefox, access the following link;
2. Click on the Hambourger menu;
3. Click on the Print option to enable the Print Preview view;
4. Print the page;

Expected result

• step 3/4 should show the 3D model;

Actual result

• black square rendered instead;

Regression range

• not a regression, appears to reproduce on older builds such as 55.0a1;

Additional notes

• attached screenshot with the issue - on the left is the preview from macOS10.15 - 68.11esr on right another browser;
• suggested severity is S2-S3 since it's not the most common use-case scenario but might be affecting other pages as well.

Comment 1

[Emilio Cobos Álvarez (:emilio)]

It seems a bunch of the WebGL printing doesn't work, like https://webglsamples.org/blob/blob.html

Jeff, this looks similar to bug 976173, except preserveDrawingBuffer: false is not getting used afaict. Do you know what may be going on here?

Comment 2

[Kelsey Gilbert [:jgilbert]]

preserveDrawingBuffer: false is the default unless an app asks for preserveDrawingBuffer: true.

Comment 3

[Emilio Cobos Álvarez (:emilio)]

Ah, right, thanks. Then this is bug 976173.