On my ATIx700 powered laptop, I've got a problem using opengl. The simple sketch below should show a blurred pixel travelling across the screen and this is what it does using every other renderer. However, using opengl it shows either:
a) two pixels travelling across a black background if the background(0) command is in the setup function.
b) two pixels travelling across a grey background (with the grey colour inversely proportional to the alpha value in the fill command).
This isn't a problem with any of my other PCs....
Anyone else had this issue?
Quote:import processing.opengl.*;
void setup()
{
size(400,400,OPENGL);
background(0);
}
float t = 0;
int y = 0;
void draw()
{
fill(0,64);
rect(0,0,width,height);
//fill(255);
stroke(255);
y++;
y%=width;
point(y,height/2);
t+=0.007;
}
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OpenGL Alpha Problem (Read 509 times)