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  Texture:illegal image size  (Read 3611 times)
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Offline darkpegasus

Senior Newbie





« Posted 2007-09-16 06:11:24 »

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.<init>(RotationTesterWithTexture.java:52)
   at RotationTesterWithTexture.main(RotationTesterWithTexture.java:65)
Offline broumbroum

Junior Devvie





« Reply #1 - Posted 2007-09-16 21:47:20 »

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

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Offline darkpegasus

Senior Newbie





« Reply #2 - Posted 2007-09-17 16:37:27 »

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.
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Offline broumbroum

Junior Devvie





« Reply #3 - Posted 2007-09-17 22:35:21 »

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 !  Cheesy
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 !

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Offline darkpegasus

Senior Newbie





« Reply #4 - Posted 2007-09-29 18:12:47 »

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
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