Real-time Shadow Simulator

Generates several tiles of grids containing Perlin noise, and then renders them with shadows.

Running

The shader files (src/*.{frag,vert,geom}) are referenced within the code by assuming they are located in the current working directory. It is therefore necessary to set the CWD when running the program to the src/ directory, or copy/symlink the files to whatever your actual CWD is.

Control

Sample from console output:

Mouse control:
	Click and drag to rotate camera

Keyboard control (case-insensitive):
	x, q, [ESC]: Quit program
	r: Regenerate terrain

	wasd: Move forward/left/backward/right relative to the camera
	cz: Move up/down relative to the world

	k: Toggle point light following camera
	l: Toggle phong light simulation
	m: Toggle shadows
	n: Toggle ground/normal colour
	p: Toggle day/night cycle

Example Outputs

Sunset

This image shows a "sunset". Contains 4x4 tiles each containing (1<<9)^2 points, for a total of 4,194,304 vertices. Shadows update in real-time with sun position.

Stress Test

Putting as many vertices as we can on the shader. Contains 32x64 tiles each containing (1<<8)^2 points for a total of 134,217,728 vertices. Renders at several frames per second on a 6950XT and uses roughly 7.7GiB of VRAM.