Godot version

Godot Engine v4.0.beta10

System information

archlinux; vulkan on dedicated NVIDIA GeForce RTX 3060 Laptop GPU; opengl3 on integrated AMD Radeon Graphics (renoir, LLVM 14.0.6, DRM 3.49, 6.1.1-arch1-1)

Issue description

With the opengl3 backend a shader will read a Samper2dArray uniform as being completely black.

opengl3:

vulkan:

used shader:

shader_type spatial;

uniform sampler2DArray textures : source_color, filter_linear_mipmap;

void fragment() {
	ALBEDO = texture(textures, vec3(UV, 1.0)).xyz;
}

Steps to reproduce

Create a scene with a meshinstance3d with the shader above as a material.
Give that shader a Texture2DArray as parameter.
With the vulkan renderer this will run fine, but with opengl3 the texture is read as being completely black.

Minimal reproduction project

sampler2darray.zip