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  Alpha Blending, I am doing it wrong ?  (Read 1834 times)
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Offline Cero
« Posted 2007-07-11 01:48:57 »

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...

Offline Cero
« Reply #1 - Posted 2007-07-11 02:06:03 »

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 Grin

Offline 2playgames

Junior Devvie

« Reply #2 - Posted 2007-07-11 11:33:30 »

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

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Offline Cero
« Reply #3 - Posted 2007-07-11 22:02:45 »

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 Smiley

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