894492 - [meta] WebGL2 prototype bugs support

Status: RESOLVED FIXED

(Core :: Graphics: CanvasWebGL, defect)

Description

[Guillaume Abadie]

This bug is intended to have dependencies on all WebGL 2 prototype's bugs reported by our contributors.

Comment 1

[max.limper]

Dear Guillaume and colleagues,
thanks a lot for providing access to the WebGL 2 prototype.

Unfortunately, I was not able to create a WebGL 2 context, following the instructions:
https://wiki.mozilla.org/Platform/GFX/WebGL2#Playground

I'm using Windows 7, 64 Bit, and I have (today, July 25) downloaded and used the corresponding Nightly Installer. I have then run Nightly from the command line with "firefox.exe -P webgl2_config -no-remote", and I have set the "webgl.enable-draft-extensions" flag, and created the "webgl.enable-prototype-webgl2" flag, with its value set to true.

The javascript execution seems to terminate during the call to "canvas.getContext("experimental-webgl2");". Replacing "webgl2" with "webgl", it works.

Do you have any clue what might be going wrong?

Thanks a lot in advance.

Best,
Max

Comment 2

[Guillaume Abadie]

I Max ! Thank you for reporting.

First, there is a big difference between experimental-webgl2 and experimental-webgl. Indeed, experimental-webgl was use for the WebGL 1 prototype long time ago. Therefore getContext("experimental-webgl") success because it give you back a WebGL 1 context. =)

The problem we are having specifically on windows about WebGL 2 is that we are using ANGLE to convert OpenGL ES calls to DirectX 11 calls. But our running ANGLE only provide a OpenGL ES 2 context, and might not provide all extensions needed by WebGL 2. A new angle version will give us a OpenGL ES 3 compatible context soon.

Could you try to run with "export MOZ_WEBGL_FORCE_OPENGL=1" before launching firefox ? This force to use an OpenGL context for WebGL, but performance are not good at all with that.

Comment 3

[max.limper]

Hi Guillaume,

setting the environment variable you mentioned worked - at least the test program tells me that I have a webgl2 context now :-)

Thanks a lot for the quick and helpful response!

Comment 4

[Guillaume Abadie]

Great !

I'm going to modify the tutorial for Windows User right now.

Please create a separate bug and just fill the <<blocks>> form with 894492 next time.

Thank to you !

Comment 5

[Kelsey Gilbert [:jgilbert]]

We're out of the prototype stage now.