Screen turns completly black if shader changed on GLES2

[Chaosus]

Godot version:
bf1c81a

OS/device including version:
Win10/GTX1060

Issue description:

Steps to reproduce:
Create a MeshInstance, add a shader to it and try to change...

Note: its different from #32458 - this issue happens every time the shader changed, and the screen turns completely black, not only background...

[akien-mga]

No error in the terminal?

[Chaosus]

Nope. Its also broke the render modes - so you unable to change it to wireframe or overdraw

[akien-mga]

I guess it's likely caused by #31845.

[Chaosus]

You right it's from that PR, I've checked

[akien-mga]

I did a quick test on Linux, AMD Radeon RX Vega M, I don't seem to reproduce the issue:

Also seems to work fine with Intel HD 630.

So there might be something specific to your project, e.g. Environment config.

[Chaosus]

Thats strange - Im unable to reproduce it on new project but it will on -

AShaderTest.zip

[akien-mga]

Its also broke the render modes - so you unable to change it to wireframe or overdraw

I can confirm that render modes don't seem to change anything, but did they ever work on GLES2? Maybe they're only implemented in GLES3.

Thats strange - Im unable to reproduce it on new project but it will on -

AShaderTest.zip

This project also seems to work fine for me, weird.

Maybe delete your drivers/gles2/shaders/*.gen.h and rebuild to be sure that you got the proper shaders compiled.

[Zireael07]

IIRC render modes are GLES3 only?

[Calinou]

@Zireael07 That's correct, see #27018.

[Chaosus]

Hmm.. probably some environment bug, in the scene

[Chaosus]

Anyways, after cleanup the *.gen shader files again Its no longer happens ( which is weird cuz deleting it several times before but it have no effect)

[avril-gh]

I can confirm that render modes don't seem to change anything, but did they ever work on GLES2?

they did'nt worked on GLES2 for a long time, i remember i had to use GLES3 mode when i been working on vertex shader's to see wireframe preview.