This is a test shader program I've written as an intermediate stage of my final project for my degree program.
This program uses a geometry shader to sample volume density generated via a simplex noise algorithm and then passes those samples to the Marching Cubes algorithm to generate an Isosurface separating the low density portions from the high density portions. Basically the geometry rendered approximates the places in the volume where the density equals 0.5.
The animation effect (which is more more interesting for a real-time program) is created by overlapping two volumes that move through space and using the average for each sample pair as the density value.
With the exception of some basic setup like generating the marching cubes tables and the vertex objects, pretty much everything is done in the shader.
Based off of [ Ссылка ].
