i ran into an old Processing issue of overlapping lines with a stroke of 1% alpha, basically my goal here is to draw a lot of black lines with a 1% alpha eventually the hole screen should be 100% black, but the result is a light grey (see example below) i remember this problem from way back to P3 V0.9 but kind of hoped it would have been solved by now!

1. why is this happening ?

2. is there ANY way of solving this in Processing ?

3. are there other optimized drawing api's for Processing ? (must be ultra fast ;)

4. any tricks using opengl etc. ??

thanks :)

example code

2. PGraphics big;
3. int w, h;
4. 
   
5. void setup(){
6.   size(600, 600, P3D);
7.   w = 496;
8.   h = 496;
9.   big = createGraphics(w,h, P3D);
10.   big.beginDraw();
11.   big.background(255);
12.   big.endDraw();
13. }
14. 
    
15. void draw(){  
16.   big.beginDraw();
17.   big.stroke(0,0,0,1);
18.   for(int i=0; i<1000; i++){
19.     big.line(0,0,random(w),random(w));
20.   }
21.   
22.   big.endDraw();
23.   image(big, 0,0);
24. }