albedo_textures that are LargeTextures can't be applied to Meshes

[Jayman2000]

Godot version:

3.2.3.stable.official

OS/device including version:

OS: Arch Linux (I don't know how to give a version for this)
CPU: x86_64 AMD Ryzen 5 3600
GPU: ASRock Radeon RX 580
Backend: GLES2 and GLES3

Issue description:

Setting a SpatialMaterial's albedo_texture to a LargeTexture doesn't cause the Texture to appear on a Mesh. Instead, Godot acts like the albedo_texture is completely transparent.

Steps to reproduce:

1. Create a MeshInstance.
2. Set the MeshInstance's mesh to any Mesh.
3. Set the MeshInstance's material_override to a new SpatialMaterial.
4. Set the SpatialMaterial's albedo_texture to a LargeTexture.

Minimal reproduction project:

large_albedo_texture.zip

[Calinou]

I'm not sure which state LargeTexture is in. It may not be supported in 3D at all.