SurfaceTool (and Mesh) are not included in disable_3d=yes build

[volzhs]

Godot version:

3.1.1.devel cab4921 (compiled editor and templates)

OS/device including version:

Kubuntu 19.04

Issue description:

it runs fine with using SurfaceTool in script.
but exported game crashes on both debug and release export.

$ ./parse_error_surface_tool.x86_64 
OpenGL ES 3.0 Renderer: GeForce GTX 1070 Ti/PCIe/SSE2
SCRIPT ERROR: GDScript::load_byte_code: Parse Error: Identifier 'SurfaceTool' is not declared in the current scope.
   At: res://Node2D.gdc:5.
ERROR: load_byte_code: Method/Function Failed, returning: ERR_PARSE_ERROR
   At: modules/gdscript/gdscript.cpp:785.
ERROR: load: Condition ' err != OK ' is true. returned: RES()
   At: modules/gdscript/gdscript.cpp:2168.
ERROR: _load: Failed loading resource: res://Node2D.gdc
   At: core/io/resource_loader.cpp:285.
ERROR: poll: res://Node2D.tscn:3 - Parse Error: [ext_resource] referenced nonexistent resource at: res://Node2D.gd
   At: scene/resources/resource_format_text.cpp:440.
ERROR: load: Condition ' err != OK ' is true. returned: RES()
   At: core/io/resource_loader.cpp:208.
ERROR: _load: Failed loading resource: res://Node2D.tscn
   At: core/io/resource_loader.cpp:285.
ERROR: start: Failed loading scene: res://Node2D.tscn
   At: main/main.cpp:1739.
handle_crash: Program crashed with signal 11
Dumping the backtrace. Please include this when reporting the bug on https://github.com/godotengine/godot/issues
[1] /lib/x86_64-linux-gnu/libc.so.6(+0x43f60) [0x7fa14cb44f60] (??:0)
[2] ./parse_error_surface_tool.x86_64() [0x1047c5f] (??:?)
[3] ./parse_error_surface_tool.x86_64() [0xb33abc] (??:?)
[4] ./parse_error_surface_tool.x86_64() [0x59e402] (??:?)
[5] ./parse_error_surface_tool.x86_64(main+0x84) [0x578f24] (??:?)
[6] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xeb) [0x7fa14cb27b6b] (??:0)
[7] ./parse_error_surface_tool.x86_64() [0x57a39a] (??:?)
-- END OF BACKTRACE --
Aborted (core dumped)

Steps to reproduce:

extends Node2D

func _ready():
	var surface = SurfaceTool.new()
	pass

Minimal reproduction project:

sample project : parse_error_surface_tool.zip

exported : parse_error_surface_tool.x86_64.zip

[volzhs]

cc @vnen @bojidar-bg

[akien-mga]

Did you compile with disable_3d=yes?

[volzhs]

oh. yes...

[volzhs]

without disable_3d=yes, it works.

[akien-mga]

That's expected, SurfaceTool depends on Mesh which are 3D resources.
They could maybe be kept in disable_3d builds if they're a valid use case for them in 2D though.

[volzhs]

https://godotengine.org/asset-library/asset/296
This asset using SurfaceTool for making 2d things.
is SurfaceTool only for 3d?