CUDA Ray Tracer

GPU-accelerated ray tracing renderer built with CUDA and SDL2

Features

• GPU-Accelerated Rendering: Uses cuda for parrelism on nvidia gpus
• Material System: Support for multiple material types (diffuse, specular, glossy)
• Normal Mapping: Enhanced surface detail with normal map support
• Texture Support: Texture mapping with customizable UV coordinates
• OBJ Model Loading: Import 3D models from OBJ files (needs to be optimized)
• BVH Acceleration: SAH BVH for efficient ray-scene intersection testing
• Reflections: Multi-bounce reflection support with configurable reflection depth
• Real-Time Interaction: Mouse and keyboard controls for camera movement and rendering adjustments

Project Structure

renderer/
├── kernel.cu             # Main entry point and scene setup
├── engine.cuh            # Full engine class
├── renderer.cuh          # Ray tracing kernel and lighting calculations
├── scene.cuh             # SOA scene class implementation
├── bvh.cuh               # BVH acceleration structure
├── objects.cuh           # Host object definitions and geometry primitives
├── light.cuh             # Light sources class
├── material.cuh          # Material properties and surface types
├── texture.cuh           # Texture management and sampling
├── normal.cuh            # Normal mapping implementation
├── algebra.cuh           # Utilities implementation mainly just math for vectors , matrix ,..
├── obj_loader.cuh        # OBJ file parsing and loading
└── settings.cuh          # Configuration and runtime settings

Preview

No Median Filter	Median Filter
	

Controls

Key	Action
W/A/S/D	Move camera forward/left/backward/right
E	Move camera up
Q	Move camera down
Mouse	Look around
H	Enable high-quality rendering (SSAA x4)
L	Toggle light movement mode

Configuration

Modify settings.cuh to adjust:

• Camera movement speed
• Mouse sensitivity
• Quality settings

Modify kernel.cu to:

• Load different OBJ models
• Adjust light positions and colors
• Configure material properties
• Change scene layout