[wpe 2.38] No WebGL anti aliasing

[KMerzak]

Hello !
Iam using :
Cog version 0.16.1
(WPE WebKit 2.38.6) with WPEBackend-fdo
Weston/Wayland : 10.0.1 with the Toradex Veredin IMX8MPlus
The issue i have is I can't enable WebGL context property antialias ( i tried to set antialias : true but nothing changes even enabling WebGLRenderingContext: sampleCoverage() method) it is quite visible when drawing lines with gl.drawArrays with chromium antialiasing works fine
I tried to run the test : https://github.com/WebPlatformForEmbedded/WPEWebKit/blob/wpe-2.38/LayoutTests/fast/canvas/webgl/antialiasing-enabled.html
and it failed on cog but passed on chromium.
Do you have any idea what might be happening ? Thanks !

[pgorszkowski-igalia]

@KMerzak : did you run cog and chromium on the same machine/environment?

[KMerzak-AL]

Hello ! Yes im running them on the same machine, but Cog and Chromium runs on different containers.

[KMerzak-AL]

Quick update :
I compiled WPEWebkit on Desktop for WSL2 (linux on windows) and i was able to obtain antialiasing using the ANGLE Webgl compile option .Is it the recommended solution ? or WebGL antialiasing also works with the defautl Webgl compile option without using ANGLE?

[magomez]

I recommend you to use the 2.46 version, which uses ANGLE by default, and you should have antialiasing support out of the box with that. Also, this WPE version is targeted to very concrete hardware (Set Top Boxes) and with very concrete specs. From the info you provide, it seems that you should be using the upstream version instead. These are stored in https://wpewebkit.org/releases/