Lyrae Shaders

Lyrae • Physically-Based Real-Time Path Traced Shaderpack

📌 NOTICE: This project is currently in very early alpha stages. Expect issues, visual artifacts and varying performance. I have a huge roadmap. I'd appreciate any kind of feedback and your support!

Features

• Real-Time Voxel Path Tracing
  • Monte Carlo global illumination with multiple light bounces
  • Fast voxel traversal via DDA algorithm
    
• Sampling & Image Stability
  • Low-discrepancy blue noise sampling
  • Temporal accumulation with reprojection for noise reduction
  • Next Event Estimation (NEE) for explicit sun sampling
  • Edge avoiding À-Trous denoiser
    
• Physically-Based Materials
  • Unified physically-based shading pipeline
  • Designed for real-time & artistic efficiency
  • Support for LabPBR resource packs
    
• Post-Processing
  • Filmic tonemapping
  • Color grading
  • Chromatic aberration

Community

If you enjoy my shaderpack, you can support me & my studies here: Buy Me a Coffee ❤️

You can join the discord server here.

PBR Support

Lyrae supports LabPBR 1.3 standard. So make sure to use a resourcepack with LabPBR material support, here's a list of resourcepacks on shaderlabs site.

Performance Tips

• Samples is one setting with the most impact on the performance, because it directly affects the number of paths per pixel. Try to keep this at 1 if you want to enjoy real-time.
• You can try changing the Resolution Scale setting, lowering this will make the lighting quality lower.
• For most scenarios 3 bounces is enough. If you have lots of reflections and refraction, you may try 4 or 5.
• If you are in a completely isolated room where no sunlight is visible, you can try disabling NEE. Note that disabling NEE will break sun light.
• You can lower denoiser iterations or disable it alltogether if you are okay with the noise.
• Post-processing almost has zero effect (compared to global illumination).