CelestiumPT 0.2: A CUDA-based Interactive Pathtracer

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WORK IN PROGRESS ⚠

The library is not yet usable for external applications

CelestiumPT is a CUDA based hobby pathtracer that is being developed for learning purposes and to be suitable for realtime applications.
CelestiumPT can work on GPUs without hardware ray-tracing acceleration (tested on GTX 1650 4GB).

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Building:

For now, the project can only be built via visual studio(recommended: visual studio 2022); the .sln file is included in the project.

Dependencies:

CUDA 12.4 toolkit

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Features:

• Two-level acceleration structure
• A-SVGF denoiser
• Diffuse materials
• Albedo texturing
• Multiple Importance Sampling
• Basic random light sampler
• Solid sky
• COD:Advanced Warfare style bloom
• AgX tonemapping
• Histogram-based auto-exposure

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Plans:

The plan is to make the pathtracer somewhat closer to the kind used by Quake2RTX.

Planned features:

Metallic, glossy opaque dielectric materials

Full PBR textures input support

HDR environment map

FSR 2

Volumetrics

ReSTIR

more...