1325598 - Assertion failure: false (WebGLContext::ErrorImplementationBug), at WebGLContextUtils.cpp:222

Status: NEW

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

Description

[Carsten Book [:Tomcat]]

found via bughunter and reproduced on latest windows m-c tinderbox debug build.

JavaScript warning: https://ocias.com/games/foggy-shore/webGL/Release/Foggy-Shore.js, line 1: Error: WebGL: Implementation bug, please file at https://bugzilla.mozilla.org/! copyTexSubImage2D: ANGLE is particular about CopyTexSubImage formats matching exactly.
Assertion failure: false (WebGLContext::ErrorImplementationBug), at c:/builds/moz2_slave/m-cen-w32-d-000000000000000000/build/src/dom/canvas/WebGLContextUtils.cpp:222

Steps to reproduce:
-> Load 	https://ocias.com/games/foggy-shore/index.php
--> Assertion failure

Assertion failure: false (WebGLContext::ErrorImplementationBug), at c:/builds/moz2_slave/m-cen-w32-d-000000000000000000/build/src/dom/canvas/WebGLContextUtils.cpp:222

Note: Bughunter reported this as possible exploitable to filing as s-s bug just in case

Also affects trunk to beta -> Trunk on linux and windows

Comment 1

[Carsten Book [:Tomcat]]

[Tracking Requested - why for this release]:

bughunter real world website found.

Jeff is this something for you ?

Comment 2

[Carsten Book [:Tomcat]]

Attachment: bughunter stack from beta build

Comment 3

[Kelsey Gilbert [:jgilbert]]

This is known and non-exploitable.

Comment 4

[Kelsey Gilbert [:jgilbert]]

Specifically, this is safe to ship with.
This is an assert we want to know when it trips, and eventually fix. It does not represent a dangerous bug per se. (it's also DEBUG only)

Comment 5

[Andrew McCreight [:mccr8]]

Unhiding per comment 3.

Comment 6

[Julien Cristau [:jcristau]]

Not tracking per the explanation in comment 4.