Update rendering driver name on fallbacks. Fix rendering driver/method in the editor system info.

[bruvzg]

• Fixes wrong names used in Help → Copy System Info (was using project settings, instead of real current driver/method).
• Add missing Direct3D 12 to the list.
• Set saved driver name if it was changed by fallback

Might fix some issues with shaders when D3D12 ↔ Vulkan fallback is used, since saved name is used to set defines:

godot/servers/rendering/renderer_rd/shader_rd.cpp

Line 202 in 3b3d622

builder.append(String("#define RENDER_DRIVER_") + OS::get_singleton()->get_current_rendering_driver_name().to_upper() + "\n");

Fixes #96380

[akien-mga]

If we're making a special case for opengl3_angle, we might as well do one for opengl3_es too.

[bruvzg]

I guess it this case, we should change opengl3 to return OpenGL 3 instead of GLES3 (but this won't be correct in case of web and mobile, which always use ES).

[bruvzg]

Updated to return OpenGL 3 or OpenGL ES 3 based on actually used backend.

[akien-mga]

Thanks!

[AThousandShips]

This breaks compiling with MSVC, it seems to introduce bad declares by introducing platform code, suspect platform/windows/platform_gl.h

Trying to create a fix

[bruvzg]

This breaks compiling with MSVC, it seems to introduce bad declares by introducing platform code, suspect platform/windows/platform_gl.h

Strange, CI runs MSVC and passed.

[AThousandShips]

Starting with a simple undefine series but might be something that can be configured for the include to block the defines, can alternatively build editor_node.cpp separately in scu

I think the errors only occur in SCU builds, and are introduced by the inclusion of the rasterizer in editor_node.cpp

[bruvzg]

simple undefine series but might be something that can be configured for the include to block the defines, can alternatively build editor_node.cpp separately in scu

Or we can add another internal OS method like set_current_rendering_method() and remove the include, actual value is set in the same init code that sets set_current_rendering_method.

[AThousandShips]

Sounds like a more coherent solution, making a PR to split up the SCU as a band-aid while that solution can be implemented