interactive-global-illumination

OpenGL engine for rendering scenes with global illumination in real-time using a voxel cone tracer.

Results

TODO:

• [x] Refactor voxelization procedure into a separate class
• [x] Shadow map tight bound using AABB
• [x] Additional Textures
• [x] Specular Cones
• [x] Interactive imgui interface to edit light, material and models
• [x] Conservative Rasterization
• [x] Emissive materials
• [x] Dynamic mesh voxelization
• [ ] Take atomic max of a colour for each voxel ??
• [ ] Compute two light bounces ??
• [ ] Possibly use assimp for a PBR based pipeline ??
• [ ] Sparse voxel octree ??

ImGui Editor Options

• [x] Move point light source around and change its color
• [x] Toggle between viewing modes:
  • [x] Visualization
    • [x] Shadows
  • [x] GI
    • [x] Indirect Diffuse
    • [x] Indirect Specular
• [x] Change material properties
• [x] Move objects around
• [x] Change voxel map resolution

Benchmark (needs to be redone)

The following benchmark is obtained on a single NVIDIA RTX 4090 GPU.

| VOXEL_DIM | 1280x720 | 1920x1080 | | ---: | :---: | ---: | | 512 | 54 FPS | 54 FPS | | 256 | 55 FPS | 55 FPS | | 128 | 56 FPS | 56 FPS | | 64 | 56 FPS | 57 FPS |