How to Render a Physically Accurate Black Hole with General Relativity
Relativistic Raytracing
This article shows how to render a black hole in full compliance with General Relativity. The author derives light-ray motion equations using the Schwarzschild metric, implements an adaptive Runge-Kutta integrator in GLSL, and combines them into a fragment shader that traces rays backward from the camera. The result is a physically accurate image of gravitational lensing and the black hole's shadow.
Light travels in a straight line. But what does straight really mean?
- jiehong
Would the image be very different for a rotating black hole?
Since they probably all rotate in nature.
- hackyhacky
This is very interesting, but way above my pay grade. Can someone explain how the resulting image reflects light traveling backwards in time?
- leidenfrost
Someone should implement this as a mod for RTX No Man Sky