Spring Shaders (Chun)

Update Changelog: Ray Tracing Support

1. Added Ray Tracing & Ray Traced Colored Lighting

• Implementation: Replaced RSM (Reflective Shadow Maps) with basic PTGI (Path Traced Global Illumination). No extra post-processing was applied; please consider this an experimental feature or a practice run, so the quality may not be perfect.
• Requirements: Currently only supported on Iris. It is disabled by default.
• How to Enable:
  • Ray Tracing: Go to Shader Options and enable Ray Tracing Diffuse and Ray Tracing Specular.
  • Colored Lighting: Enable the Colored Lighting option separately if you need it without full Ray Tracing.
• Important: Ray Tracing already includes colored lighting effects. Do NOT enable "Colored Lighting" while Ray Tracing is active to avoid unnecessary performance waste. Please refer to the in-game shader settings for more details.
• Performance: Due to architectural changes required for Ray Tracing, there is a slight performance cost compared to older versions, even when Ray Tracing is disabled. Thank you for your understanding.

2. Handheld Dynamic Lighting

• Added settings related to Handheld Dynamic Lighting.
• When Ray Tracing or Colored Lighting is enabled, the dynamic lighting system will automatically switch to Colored Handheld Dynamic Lighting.

3. Parallax Occlusion Mapping (POM) Improvements

• Modified the Parallax texture sampling method to prevent bugs caused by incomplete resource packs.
• Fixed several existing bugs within the parallax system.

4. PBR Adjustments

• Tweaked and adjusted PBR effects.

5. The Nether Overhaul

• Increased overall brightness.
• Reduced fog density and Bloom intensity for a clearer, brighter image.
• Added support for Ray Tracing and Colored Lighting within the Nether.

6. The End Overhaul

• Code cleanup and optimization.
• Reduced fog density and Bloom intensity; adjusted post-processing effects.
• Reflections in The End now support Skybox reflections.
• Added support for Ray Tracing and Colored Lighting within The End.

7. Atmosphere

• Adjusted sunrise color tones.

8. Localization

• Added English translations for the Shader Options UI.

9. Misc

• Other various optimizations and adjustments.