Particles will not render the color correctly when using color ramp + color initial ramp

[RPicster]

Godot version

4.0.rc4

System information

Win 10

Issue description

When using a combination of these settings, only color_ramp will be used as a recompilation of the shader is not triggered.

Deleting the ramp used in color_ramp and reassigning a new ramp will cause a recompilation and everything looks as it should.

Steps to reproduce

• Create GPUParticle3D node and give it a basic setup
• Add a color_ramp
• Add a color_initial_ramp

Minimal reproduction project

Makes no sense, when the project is closed and reopened, the shaders are recompiled.

[RyanGatts]

Still running into this in 4.1.2.stable.official
No combination of Color Ramp and Color Initial Ramp can be used together, Color Ramp's output always stomps Initial.

[clayjohn]

I can confirm that this is still a problem in 4.1.x. It has been fixed for 4.2 though, I confirmed that it is fixed as of Beta4!

I think it was fixed by #79527 which was a major change, which means it isn't suitable to be cherrypicked to 4.1.4 unfortunately.