Bone animations invisible on android

[Asedi]

Godot version:
3.1 RC1

OS/device including version:
Android 4.4.4

Issue description:
Hello. I have got problem with my simple bone animation using AnimationPlayer, Skeleton2D and body parts as Polygons2D on my android phone. "Head" of the character and his legs are Polygons2D. Simply, animated legs are just invisible. On my windows pc it's working fine. I'm using GLES2 and my phone is HTC DESIRE 620. I can check it on newer device if it's needed,
Windows 7

Android 4.4.4

[vbousquet]

Hi, I can confirm the bug. Skeleton2D works fine on Windows 10, but shows nothing on some Android devices. Additional informations:

• Version is 3.1 final
• The bug only happens in the GLES2 renderer; switching to GLES3 solve this.
• The bug does not appear on all devices; works fine on Google Pixel C with Android 8.1.0, but not on Samsung A8 (SM-A530F) with Android 8.0.0
• My animation use internal vertices (same setup as the 2d deform mesh in the docs).

[akien-mga]

Is this still reproducible in the latest 3.2 builds?

If so, can you attach a project that triggers the issue?

[Asedi]

Unfortunately my project is gone propably and I’m using IOS now so can’t help with it.

[vbousquet]

I have just made the test again on the Samsung A8 (SM-A530F):

• The bug is still there in 3.2 RC1 (i.e. not rendering in GLES2 while rendering in GLES3)
• The other bug referenced above in issue Skeleton2D Node Makes Polygon2D Textures Dark in Android [GLES3] #27919 is also still there in 3.2 RC1 for GLES3 (dark rendering)

[lawnjelly]

This should be checked with 3.2.4 beta 1 onwards, as it may be fixed by 2d software skinning in unified batching.

[kyoz]

I'v the same problem with GLES2 on 3.2. GLES3 is working but get some weird color.

Godot 3.3 seem fixed this, but i got the bone rotation problem. You sound give it a try

[lawnjelly]

Godot 3.3 seem fixed this, but i got the bone rotation problem. You sound give it a try

If you have a bone rotation problem, please post an issue with a minimum reproduction project so I can fix it. There are some differences in the methods of skinning between the hardware and software, I've tried to work through the cases.

2D software skinning was introduced in 3.3, so if you have hardware that didn't support hardware skinning (e.g. some Android) then you should upgrade to 3.3.

[kyoz]

Hi @lawnjelly , i'v tried to create a minimum reproduction project but it work just correctly. Doesn't know why bone in my pj got wrong rotation. I'v tried it again and create an issue if i'v found any problem.

Thank you so much ❤️ :

[kyoz]

This is some how relative to #48348

In Godot 3.3 rendering/2d/use_software_skinning is enabled by default and it help rendering correctly on android device. But turn it on will cause rotation problem with Skeleton2D Bones

[kyoz]

Tested on 3.3.1-rc2 and this issue is fixed