rooferdev fffe4a4788 Native HDR output: settings toggle + paper white / peak / intensity sliders ...

Adds optional native HDR (scRGB) presentation with an SDR->HDR highlight
tone map, exposed as real graphics settings:
- 'Enable HDR' checkbox, off by default. Only engages when the display/OS
  advertises the scRGB (extended sRGB linear) HDR colorspace, so SDR output
  is left completely unchanged.
- Paper white, peak brightness and highlight intensity sliders, read by the
  HDR color-blit and FSR sharpening shaders through uniforms.
- Blacks are preserved by construction (highlight-only expansion).
- Defaults calibrated on a 4K OLED: 200 nits paper white, 1100 nits peak,
  intensity 80. Vulkan only.

Co-Authored-By: The Roofer Dev <therooferdev@gmail.com>

2026-06-17 23:11:19 -04:00

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