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