Texture:illegal image size

Engines, Libraries and Tools Java 3D
#1

I know the image has to be a power of 2 for both dimensions. My image is 256x256 but the following still throws the illegal image size exception. Is there some bug I should be aware of?

TextureLoader loader = new TextureLoader(path, this);
ImageComponent2D image = loader.getImage();
System.out.println(image.getWidth() + “x” + image.getHeight());
// this prints out 256x256
Texture2D texture = new Texture2D();
texture.setImage(0, image);
// and here I get:
//Exception in thread “main” java.lang.IllegalArgumentException: Texture:illegal image size
at javax.media.j3d.TextureRetained.checkImageSize(TextureRetained.java:400)
at javax.media.j3d.TextureRetained.initImage(TextureRetained.java:345)
at javax.media.j3d.Texture.setImage(Texture.java:940)
at RotationTesterWithTexture.(RotationTesterWithTexture.java:52)
at RotationTesterWithTexture.main(RotationTesterWithTexture.java:65)

#2

Is there any MediaTracker impl. in the TextureLoader ? this error occurs when the image isn’t fully loaded in vram.

#3

I’m using the built-in TextureLoader for this but I’m fairly certain that it is handling the MediaTracker implementation.

I’m also getting 256x256 printed to the console. Normally I would have seen 0x0 if the image had not been loaded which leads me to believe the tracking is in place.

#4

sounds good… did you check for the IllegalArgumentException for this method ? http://javadesktop.org/lg3d/javadoc/0-7-1-latest/api/org/jdesktop/lg3d/sg/Texture.html#setImage(int,%20org.jdesktop.lg3d.sg.ImageComponent)
It seems not to accept different sizes when the texture is already part of the scene… I’m not Java3D experienced but check for that scene status issue ! :smiley:
Plus it is not true that all sub-classes of Texture will accept the setImage() functionnality, try setDetailedImage() which will better reflect the Texture2D detailed features !

#5

Thanks for the help. The setDetailedImage() worked in the meantime for me to figure some stuff out. I upgraded to Java 6 and the method below magically started workiing. It also supports images that aren’t a power of 2 if your graphics card does too.

public static Texture2D getTexture(String path)
{
TextureLoader texLoader = new TextureLoader(path, null);
Texture2D texture = (Texture2D) texLoader.getTexture();
if (texture == null)
System.out.println("Cannot load texture from " + path);
else {
System.out.println("Loaded texture from " + path);
texture.setEnable(true);
}
return texture;
} // end getTexture