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Source Code Overview

Acceleration Structure Abstraction

./as
  • Abstraction for BLAS and TLAS
  • Geometry Meta buffer for maintaining meta data for instances written to TLAS and individual BLAS geometries.

Base classes

./base
  • DefaultAppBase and MinimalAppBase application base classes
  • Vulkan Instance, Device, WindowSwapchain context wrappers
  • Renderloop implementation
  • Rendering structs

Benchmarking

./bench
  • Benchmark base class for maintaining logs of individual benchmark runs
  • Host benchmark implementation
  • Device benchmark implementation

Core Abstractions and Features

./core
  • Abstractions for VkCommandBuffer, VkDescriptorSet, VkBuffer, VkImage, VkShaderModule
  • Manager classes for shaders and samplers
  • Context struct implementation

glTF Loader Implementation

./gltf
  • Loader for glTF files writing directly into the scene graph

Operating System Interface

./osi
  • C++ wrapper based on SDL2
  • Window Management
  • OS Events
  • Input Devices

Ray Tracing Pipeline Wrapper

./rtpipe
  • Abstraction of shader binding table and Ray Tracing Pipeline

Scene Graph

./scene
  • Component implementations in components
    • Transform
    • Camera and Camera Controller
    • Mesh Instance
    • Punctual Light
  • Global Component implementations in globalcomponents (scene level singletons)
    • Animation Manager
    • Camera Manager (maintains camera matrices Ubo)
    • Draw Manager (maintains rasterized instanced drawing of mesh instances and model to world transformation buffers)
    • Geometry Manager (vertex and index buffer)
    • Light Manager (punctual lights)
    • Material Manager
    • Texture Manager
    • TLAS Manager
  • Animation support
  • Entity Component System with event distribution
  • Geometry management
  • Material management

Prebuilt shader (includes)

./shaders
  • Include files for binding all buffers provided by other implementations in the framework
  • GPU-generated random numbers via xtea and lcg
  • Methods for getting geometry and material informations in ray tracing shaders
  • Methods for evaluating material reflectance

Render Stages

./stages
  • RenderStage base class
  • RaytracingStage, ComputeStage, RasterizedRenderStage specialized base class
  • GBuffer implementation
  • Frame Buffer blit stage
  • Denoiser stage (denoiser interface)
  • ImGui stage
  • Comparer stage for comparing frame buffers side by side

Various Utilities

./util
  • DualBuffer for uploading data to a single device side buffer without conflicts for in flight rendering
  • History Image for maintaining a frame buffer from previous rendering
  • Image Loader interface combining stbImage and tinyEXR implementations
  • Various further wrapper classes

Common types and includes

./
  • Exceptions and Assertions
  • logger (spdlog)
  • Including of Vulkan, Vkb, Vma, GLM with configuration