Fonts with LCD Subpixel Antialiasing do not respect control's Modulate when using Forward+ or Mobile renderer

[cridenour]

Tested versions

• Reproducible from 4.0 beta 6 (earliest I had easy to test) up to master

System information

Windows 10 & macOS

Issue description

When a font is imported as LCD Subpixel and rendered in Vulkan Forward+ or Mobile, the modulate color (self or total, on the control or inherited by its parent) is completely ignored.

Steps to reproduce

1. Import a font and update it's advanced import settings to use LCD Subpixel antialiasing
2. Use a Vulkan renderer
3. Modulate any control using it, via theme, theme override, label settings, etc.

Minimal reproduction project (MRP)

lcdsubpixelmodulate.zip

[Calinou]

cc @bruvzg

When a font is imported as LCD Subpixel and rendered in Vulkan Forward+ or Mobile

Does the issue occur in Compatibility?

[cridenour]

Does the issue occur in Compatibility?

It does not.