Global uniforms are unusable

[Chaosus]

Godot version:
d817be9

OS/device including version:
Win10

Issue description:
Global uniforms emit the long error when user tried to use them, I think the most important part is this:

ERROR: Error compiling Fragment shader, variant #2 (
#define MODE_RENDER_DEPTH
#define MODE_RENDER_NORMAL
).
at: ShaderRD::_compile_variant (servers\rendering\rasterizer_rd\shader_rd.cpp:347)
ERROR: Failed parse:
ERROR: 0:1790: 'global_variables' : undeclared identifier
ERROR: 0:1790: 'data' : unknown swizzle selection
ERROR: 0:1790: 'data' : vector swizzle selection out of range
ERROR: 0:1790: '' : compilation terminated
ERROR: 4 compilation errors. No code generated.

Steps to reproduce:
Just run a scene in the provided project.

Minimal reproduction project:
Test3.zip

[Chaosus]

Seems fixed in the current master...