Nebula

A cross-platform rendering engine built with Vulkan.

Ray Tracing Pipeline MIS Path Tracer

[Preview] GPU-driven hybrid hair rendering (mesh shader, compute rasterizer)

Bistro Scene with RT Shadows

[Experiment] Single-bounce diffuse GI with Ray Queries

Features

• Supports Windows and macOS
• GPU-driven rendering
• Vulkan raytracing support
• User interface with ImGui
• GLTF loading
• Gamepad Support
• Basic Scene system
  • Slot pools with generational handles for data management
  • Geometry
    • Single Vertex and Index buffer
    • Bottom-Level AS management with a single backing buffer
  • Per-geometry batched instanced rendering
  • Texture System
  • Materials System
  • Top-Level AS Management
    • Compute-based data updates using the existing instance data
    • Used for PT, GI, shadows, ambient occlusion and object selection
• Experimental voxel terrain generator for test scenes
• Rendering techniques
  • Ray tracing pipeline-based MIS path tracer with support for any BSDF.
    • Current BSDFs: Diffuse, Mirror, Dielectric
    • Mesh Emitters
  • Deferred shading
  • Screen-space and raytraced ambient occlusion
  • Raytraced shadows
  • PBR Lighting
  • Anti-aliasing (FXAA)
  • Procedural Sky
  • Multiple lights, Runtime editing via UI
  • Frustum Culling
    • Debug Shader for AABB visualization
  • Tone Mapping (currently AgX)
  • Single-bounce GI Experiment → Indirect Diffuse Lighting