Thank you for all your valuable suggestions. I found the following problem:
TextureLoader loader = new TextureLoader(imageAddress, null);
ImageComponent2D image = loader.getImage();
Texture2D texture = new Texture2D(Texture.BASE_LEVEL, Texture.RGBA,
image.getWidth(), image.getHeight());
If the image.getWidth() and image.getHeight are power of two, then there is
no problem, image can be rendered.
If they are not power of two, then Exception thrown:
java.lang.IllegalArgumentException: Texture: width NOT power of 2
If I manually set the width and height to be a power of two like:
Texture2D texture = new Texture2D(Texture.BASE_LEVEL, Texture.RGBA,
512, 512);
then the rendered is only a blank area (no image visible). Could anyone
tell me how I can fix this problem?
Thank you!
G.B. Liu
----- Original Message -----
From: "Justin Couch" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, January 16, 2003 3:19 AM
Subject: Re: [JAVA3D] Something wrong about Raster?
> John Wright wrote:
> > TextureLoader is capable of loading "textures" / "images" of sizes other
> > than powers of two. It will automatically adjust the image for you. So
> > it can be flexible if you let it. (I try to make all my textures powers
> > of two so such adjustments aren't necessary)
>
> To add to John's point - if you provide them as powers of two directly,
> that saves having an extra copy of the image floating around in memory
> too at some point during the process. If you have moderately sized
> textures ( >256x256) then that can add up to quite a lot of memory being
> used.
>
> --
> Justin Couch http://www.vlc.com.au/~justin/
> Java Architect & Bit Twiddler http://www.yumetech.com/
> Author, Java 3D FAQ Maintainer http://www.j3d.org/
> -------------------------------------------------------------------
> "Humanism is dead. Animals think, feel; so do machines now.
> Neither man nor woman is the measure of all things. Every organism
> processes data according to its domain, its environment; you, with
> all your brains, would be useless in a mouse's universe..."
> - Greg Bear, Slant
> -------------------------------------------------------------------
>
>
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