> This isn't strictly a Java2D question, but I thought someone here might know
> the answer ...
>
> I'm drawing grayscale images into an offscreen BufferedImage and then using
> drawImage to display them in the paint (or paintComponent) event. I set the
> FORCEGRAYS environment variable to ensure the maximum number of grays in the
> palette. I find that if I use a buffered image created as follows
>
> m_image = new
> java.awt.image.BufferedImage(xDim,yDim,
> java.awt.image.BufferedImage.TYPE_BYTE_INDEXED,m_icm);
>
> performance is awful, but I get a gray ramp which makes use of all the
> available grays.
Which part of the performance is awful? Drawing into the BufferedImage or
drawing the BufferedImage to the screen or both?
> When I create the BufferedImage as follows
>
> m_image = new
> java.awt.image.BufferedImage(xDim,yDim,
> java.awt.image.BufferedImage.TYPE_BYTE_GRAY);
>
> performance is better by a factor of almost 4, but the ramp is streaky, since
> not all the available grays are used.
Do you have a sample test program? What kind of video card are you using?
Jerry
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