This example shows a code that worked until version 0114.
This should show a windmill, on grey over a greyscale field. It's showing
the transparency as white.

[code]
PImage img;
float rotation = 0;

void setup() {
img = loadImage("http://www.area3.net/pruebas/aspa.gif");

size(320,320,P3D);
}

void draw() {
rotation += .01;
background(mouseY/2);
translate(width/2,height/2);
rotateZ(rotation);
image(img,-32, -32);
}
[/code]

*** This bug has been marked as a duplicate of 350 ***