A little project I did to learn about OpenGL and perlin noise. It evolved out of an effort to flesh out a wireframe prototype, and ended up being a months-long journey of learning OpenGL. As a result, LOTS of the GLSL code is copy-pasted due to me being impatient and just trying to get a 3D model going. I've linked as many of the papers and sources I've copied and learned from below.
- Perlin noise: https://en.wikipedia.org/wiki/Perlin_noise
- Fractal noise: https://thebookofshaders.com/13/
- Learning OpenGL: https://learnopengl.com/
- Website for retrieving heightmaps: http://terrain.party/
- Level of detail and nested grids: http://hhoppe.com/proj/geomclipmap/
- Fast fourier transform: https://www.keithlantz.net/2011/10/ocean-simulation-part-one-using-the-discrete-fourier-transform/
- Realistic water: https://hydrogen2014imac.files.wordpress.com/2013/02/realisticwater.pdf
- Code for fresnel water, including a link to glsl code: https://blog.bonzaisoftware.com/tnp/gl-water-tutorial/
- Realistic ocean lighting (I was unable to decipher the math so this was mostly used for reference): https://hal.archives-ouvertes.fr/inria-00443630
Terrain with fresnel water
Terrain with FFT water
Kualoa Ranch, Oahu rendered using heightmap
Pali Lookout, Oahu rendered using heightmap
Diamond Head, Oahu rendered using heightmap