Alpha Blending, I am doing it wrong ?

Java 2D
#1

Hi, well straight to the point
in my game if I use some Alpha Blending using java.awt.Color I got an incredible lag of performance…

For exmaple at the end of my render method when I do
Graphics.setColor(new Color(20,20,200,100)); // which is a blue alpha color
Graphics.fillRect(0,0,1000,700); // for example, covering the whole thing i a blue touch
I got 4 FPS then… am I doing it very wrong ? Because the results using java.awt.Color’s Alpha are nice but the performance =/
also on small Rects and so on…

#2

oh lol, guess what:
I just compiled and run my project with Java6u2 instead of my old Java5_08 thing
and used OpenGl pipeline, and…
62 fps =DD
so forget what I said unless you got something to say ;D

#3

what happens without the opengl pipeline? because it doesn’t work correctly everywhere yet
try alpha blending with AlphaComposite

#4

opengl react slowly but draws quckily. without it it uses D3D by default in java6 (in fullscreen)… so it makes no difference if i do -Dsun.java2d.d3d=true oder not
but with d3d it wiroks fine too now :slight_smile: