If I call light, directionalLight etc. the colors of surfaces becomes totally opaque as if alpha was set at maximum.
The same code in 2.0a4 work well however. Is this a bug to be resolved or should one use other lighting function with the new renderer?

Example:

1. 
   
   int w=1440,h=900, amm=10;
   float apa;
   
   void setup() {
     size(w,h,P3D);
     colorMode(HSB);
     noStroke();
   }
   
   void draw() {
     directionalLight(100, 255, 255, 0+(sin(apa/100)/10), 0.5, 1);
     ambientLight(10,10,10);
     background(210,255,255);
     camera(width/2.0, height/2.0, (height/2.0) / tan(PI*30.0 / 180.0), width/2.0, height/2.0, 0, 0, 1, 0);
     windows(0,-apa/100, 0);
     apa++;
   }
   
   
   void windows(float rot, float dst, int i) {
     float alp = 255/amm;
     
     if (dst > -1) {
      
     fill(255,255-alp*dst);
     pushMatrix();
     translate(0,h/2-sin(i)*400/2,(-w/3)*dst);
     box(300,1000+sin(i)*400,300);
     popMatrix();
     pushMatrix();
     translate(w,h/2-sin(i+10)*400/2,(-w/3)*dst);
     box(300,1000+sin(i+10)*400,300);
     popMatrix();
     }
    
     if (dst < amm) {
       windows(rot+PI/4, dst+1, (i+1)%17);
     } 
   }