Nine Patch Stretch Property in TextureProgress with different Fill Modes

[Foxomat]

Godot version:
v3.1.1.stable.official

OS/device including version:
Windows 10 Version 1903

Issue description:
-the Nine Patch Stretch Property of the TextureProgress Node doesn't work properly with all Fill Modes.
-selecting Left to Right, Right to Left, Top to Botom, Bottom to Top scales the Node as expected.
-selecting any other mode (Clockwise Modes and Bilinear Modes) prohibits the Node from scaling as the NinePatchRect but just leaves the Node in its original size.
-Issue persists when the size of the node is determined by parent container node.

Steps to reproduce:
-create a TextureProgress node
-add a texture
-set Nine Patch Stretch to On
-select an above mentioned Fill Mode (any Clockwise mode, any Bilinear mode)
(-fiddle with the size of the node)
(-compare to behavior when selecting a normal fill mode like left to right)

Minimal reproduction project:
-project is just 2 TextureProgress Nodes, the upper one stretching correctly, the lower one not.

Bug-Demo.zip

[fossegutten]

Was about to report a bug myself about the nine patch. The Nine Patch Stretch calculations should probably be updated for texture_progress, when the "value" gets updated.
It works fine in the ProgressBar, but that one is not ax flexible as the TextureProgress node

[Haledire]

Still a problem as of 3.2.2
Was going to suggest a solution for someone's healthbar and noticed trying to set up a Top to Bottom bar works fine, but a bottom to top fails to stretch the fill image vertically (left and right margins seem to be working)

TexProgFail.zip

Additional Note: Stretch only works properly in Bottom to Top if fill is 100%

[Reneator]

Still a problem in 3.2.3:

When trying to use "Nine patch rect" with a texture that is 100x100 and trying to set its rect smaller than its original size (like 50x50):

clockwise:

but left to right works properly:

[kayomn]

Still a problem in 3.3 rc8

[Calinou]

Related to #45791, which will be fixed by #45815. It's too late to merge it in 3.3, since we absolutely don't want to introduce regressions now. It can be considered for 3.4 still.

[akien-mga]

Assuming fixed by #45815. Please comment if that's not the case.

[lucassardois]

I'm not sure this is working as intended. Here is the same texture with the same stretch margins for the Left to Right fill mode and the Clockwise fill mode:

Left to Right:

Clockwise:

As you can see the Left to Right fill mode works as intended, but the clockwise fill is wrong. I'm on Godot 3.4.2.

[Calinou]

@lucassardois Are you using GLES3 or GLES2 in your project? Nine-patch is only fully supported in GLES3 as it's impossible to replicate in GLES2 without causing performance drops on some devices (due to UV manipulation triggering a software fallback on many drivers).

[lucassardois]

I'm using GLES3.

[Calinou]

@lucassardois Please open a new issue with a minimal reproduction project attached, as the root cause is likely different.