Physically-Based-Realtime-Lens-Flare

Realtime Lens Flare Rendering with Ray-Tracing and Lens Data

Task

• chromatic aberration
• non-linear ghost deformation
• performance optimization

Graphics API

DirectX12

Necessary External File / Code

• d3dx12.h
• dxcompiler.dll
• dxil.dll
• imgui

Calculation Method of Wave Distribution

• (Star)Burst Pattern Fraunhofer Diffraction

• Ghost/Ringing Pattern Angular Spectrum Method

Simulation Process

First, we construct optical interface such as lens. Then, we can use patent data of camera. We can simulate lens flare exactly by use of these information.

Lens form is denoted by algebraic equation, so we don't need to specific structure such as BVH.

By executing tracing of bundle, we can calculate intensity of ray. For improving in quality, we take average of its surrounding neighbors.