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MechaCat02 e6da726f7b docs(re): CONFIRM T8aD colour interpretation (linear UNORM, ARGB order) ...

Resolved the "colours look odd" channel-order/sRGB question for k_8_8_8_8
(T8aD 2D UI textures) with no emulator run:

- sRGB: Canary's Vulkan host-format table maps plain k_8_8_8_8 to
  R8G8B8A8_UNORM and contains no R8G8B8A8_SRGB anywhere — gamma is a
  separate explicit EDRAM path. So these are raw linear bytes; apply no
  sRGB/gamma decode.
- Channel order: measured 789 real disc textures — byte0 is the opaque
  alpha (==0xFF-dominant) in 97% — so on-disk is ARGB. Cross-checked
  against xenia-rs decode_k8888_tiled, the Canary-validated M1/M2 path,
  which nets the same [A,R,G,B]->[R,G,B,A]. sylpheed-formats is correct.

Promotes the k8888 entry HYPOTHESIS -> CONFIRMED; INDEX updated. XPR2
skybox tiling + viewer display-gamma remain separate open items.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

2026-07-11 17:11:17 +02:00

..

texture-color-k8888.md

docs(re): CONFIRM T8aD colour interpretation (linear UNORM, ARGB order)

2026-07-11 17:11:17 +02:00