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Trails in OpenGL when using Alpha Blending
[0 Replies]
25-Jan-2012 02:32 PM
Forum:
Core Library Questions
I have always wondered about this and now the problem is popping up in a project...
How come drawing a rect over the screen with an opacity of "1" leaves trails?
When I use about a 16, it seems to work fine, but less alpha leaves old data on the screen... Any ideas would be wildly appreciated.
Thanks kindly,
C
import processing.opengl.*;
void setup(){
size(640,480,OPENGL);
background(255);
}
void draw(){
fill(0,0,0,1);
rect(0,0,width,height);
fill(255);
rect(mouseX-5,mouseY-5,10,10);
}
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