Dynamic font loading

[vkedwardli]

• Update all rendering backends based on imgui v1.92.5
  • OpenGL: Reorganized function calling tree, but keeping our original usage of glcache, this one deviates from upstream the most.
  • DX9, DX11: Using upstream version but keeping pointSampler for VMU stuff + XXX_BORDER drawing for non-rectangular texture
  • Vulkan: Using upstream version directly

For dynamic font loading, we are now:

• registering all fonts into a list
• Pan-CJK fonts has the highest priority
• Language specific font matching user's locale has the second priority
• Only 1 font would be loaded for each language
• If Pan-CJK font is loaded, all C/J/K fonts are skipped
• Removed the glyph range completely

Checklist:

• Verify OpenGL

  • Windows
  • macOS
  • Linux
  • Android

• Verify DirectX 9

• Verify DirectX 11

• Verify Vulkan

  • Windows
  • macOS
  • Linux
  • Android

• Verify nearest-point sampling

• Verify non-rectangular texture

• Optimize font size

  • Windows
  • macOS
  • Linux
  • Android

• Emoji

  • Windows
  • macOS
  • Linux
  • Android

[vkedwardli]

• Removed static from the locale string in registerFont
• A UI Language picker
• Added Bold Font Weight
• Improved CJK Fallback Logic
  • Pan-CJK fonts
  • Fonts specifically matching the user's current locale
  • Other available language fonts
  • Generic fallback fonts
• Supports multiple paths per font entry for Linux
• Emoji support
• Merged fonts are fine tuned with size and offsetY, so they looks good with Roboto
• Wait for C++20 #2275 so we can remove the temp fix

with the current state, we can now call PushFont(NULL, new_size) to change any size for our regular font, and call PushFont(boldFont, new_size) to change to bold at any time.

This draft currently didn't touch any other part, so ImGui::PushFont(largeFont); are still being used

[vkedwardli]

uiLargeFontSize() + boldFont

uiLargeFontSize() and regular

[vkedwardli]

Reject COLRv1 font so that emoji support will be fallback to Font Awesome (latest Fedora and possibly some Androids)