dedoardo / terra

Monte Carlo Path Tracer - C

Terra

Commits are here.
This is a mirror.

Features

• Monte Carlo unidirectional integrator
• Accelerators (BVH, KD-tree)
• BSDF presets:
  • Diffuse (importance sampled cosine weighted)
  • Microfacet layered CT glossy (importance sampled)
  • Glass (RR reflection/refraction)
  • Easy to add custom
• Texturing and HDR environment mapping
• Multiple importance sampling (direct light sampling)
• Russian Roulette for path termination
• Antialiasing via random sub-pixel jittering
• Multithread ready (see Satellite viewer)
• Incremental rendering
• Multiple (local) tonemapping operators (Linear, Reinhard, Filmic & Uncharted2)

Sample Renderings

Stanford dragon ~300k triangles (BSDF: Glass)

Specs

Disclamer 8 worker threads are used in addition to the main thread, this is not an optimal scenario. Machine: Intel Core i7-2600 @ 3.40GHz - Windows 10 Pro x64 Worker threads: 8 (1 per virtual core)

Stats

• terra_trace() ~4.2 ns
• Total Throughput ~ 1'670'000 spp

PBR Wood log (Textures: albedo/roughness/metalness) ~16k triangles (BSDF: Diffuse + Microfacet Specular)

Stanford bunny ~70k triangles (BSDF: Diffuse + Microfacet Specular)