larsmichelsen / cube-shaders

Animations for my 3D LED-Cube written in GLSL

LED-Cube Shaders

This repository contains GLSL animations for my LED-Panel-Cube to be rendered using Shady.

Usage

All animations for the cube should define a mainCube function as entry point along with some boilerplate:

void mainCube(out vec4 fragColor, in vec3 fragCoord) {
  // Animation code goes here...
}

#ifndef _EMULATOR
void mainImage(out vec4 fragColor, in vec2 fragCoord) {
  mainCube(fragColor, cube_map_to_3d(fragCoord));
}
#endif

The mainImage function renders for the actual cube. It is wrapped in an ifndef so the emulator is allowed to redefine the mainImage function.

Emulator

I've written a shader that acts as an emulator for the cube. It works by defining a mainImage function that raymarches a cube and for each pixel on the surface, calls mainCube.

Quick test:

shady -g 1366x768 -i emulator.glsl -i anim/globe.glsl -ofmt rgb24 -framerate 20 \
  | ffplay -loglevel quiet -f rawvideo -pixel_format rgb24 -video_size 1366x768 -framerate 20 -i -

Rendered