FastNoiseLite for NoiseTexture3D always returns zero

[Makaque]

Tested versions

v4.2.2.stable.official [15073af]

System information

Godot v4.2.2.stable - Windows 10.0.19045 - GLES3 (Compatibility) - ANGLE (AMD, AMD Radeon (TM) R9 M360 (0x0000682B) Direct3D11 vs_5_0 ps_5_0, D3D11-27.20.1034.6) () - Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz (8 Threads)

Issue description

I set up a mesh with a ShaderMaterial. The shader takes a sampler3D, to which I'm feeding a Simplex Smooth noise texture generated with the built-in FastNoiseLite.

For a simple test I have this

vec4 tex = texture(landmass_texture, VERTEX);
VERTEX += (NORMAL * tex.xyz);

But it's always zero. No error is ever thrown, but it's always zero. 2D textures work, but 3D doesn't.

Steps to reproduce

• Start project
• add CSGMesh3D root node
• In the inspector, add a new ShereMesh and a new ShaderMaterial
• In the Material properties, add a new Spatial Shader
• Write the shader

shader_type spatial;
uniform sampler3D noise_texture;

void vertex() {
	vec4 tex = texture(noise_texture, VERTEX);
	VERTEX += (NORMAL * tex.xyz);
}

• In the inspector, in Shader Parameters create a new NoiseTexture3D
• In the NoiseTexture3D properties, for noise, create a new FastNoiseLite
• There should be visible changes to the mesh, but NORMAL * tex.xyz is always zero.

Minimal reproduction project (MRP)

Noise3D.zip

[AThousandShips]

Please explain what the issue is, what is expected and what are your results?

For me (in 4.3 [88f3b5f]) it renders with a noisy lumpy shape, with a 3D noise texture

[Grublady]

Also unable to reproduce on 4.3-rc3; it renders in a noisy 3D shape.

[Makaque]

I see the default sphere, unchanged, with a 1 unit diameter.
This problem seems to only appear in version 4.2.2 and only when Compatibility is chosen for the renderer. Fixed in 4.3-rc3.

[AThousandShips]

Would need to identify what fixed it in 4.3 to consider for cherry picking for a future 4.2.x, otherwise this can be closed as it's fixed

Edit: this was an enhancement in 4.3:

• OpenGL: Implement 3D Texture support #80363

Closing as this was an enhancement and will likely not be cherry picked

Thank you for reporting