feat: SubpixelLayout on PlatformProvider (ADR-024, v0.18.0)#17
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…(ADR-024, v0.18.0) Add SubpixelLayout type (None/RGB/BGR/VRGB/VBGR) and SubpixelLayout() method to PlatformProvider interface. Enables auto-detection of display subpixel arrangement for ClearType-quality font rendering in gg. Follows Qt6 QPlatformScreen pattern — subpixel is a display/OS property, not GPU. Researched Qt6, GTK4/Wayland, FreeType, DRM/KMS. NullPlatformProvider returns SubpixelNone (grayscale AA fallback).
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Summary
SubpixelLayouttype (None/RGB/BGR/VRGB/VBGR) to gpucontextSubpixelLayout()method toPlatformProviderinterfaceNullPlatformProviderreturnsSubpixelNone(grayscale AA)Follows Qt6
QPlatformScreen::SubpixelAntialiasingTypepattern. Researched Qt6, GTK4/Wayland, FreeType, DRM/KMS — subpixel is a display/OS property, not GPU.Test plan
go test ./...— passgolangci-lint run— 0 issues