Lesson 9 of 10 · Strange attractors on the GPU
Additive blending
Points add light. Density becomes brightness.
The points do not cover each other: they add their light. Where thousands gather, color accumulates and glows. Density becomes brightness. That is how the nebula glow appears without post-processing.
blendFunc(SRC_ALPHA, ONE)Additive blending. Every particle adds light instead of replacing it. The foundation of everything that glows.
Move Stretch and Inflate: they edit
d and a in the equation. The form reconfigures instantly.The code
vec3 attractor(vec3 p){
// Aizawa · mueve los números y mira
float a=0.95, b=0.70, c=0.60, d=3.50, e=0.25, f=0.10;
float dx = (p.z - b)*p.x - d*p.y;
float dy = d*p.x + (p.z - b)*p.y;
float dz = c + a*p.z - p.z*p.z*p.z/3.0
- (p.x*p.x + p.y*p.y)*(1.0 + e*p.z) + f*p.z*p.x*p.x*p.x;
return vec3(dx, dy, dz);
}