Loading texture from data path: Access denied

Core Library Questions

parallela..

Loading texture from data path: Access denied

in Core Library Questions • 2 years ago

Hello guys!

I'm using TextureIO to load images directly into opengl. Like this:

import com.sun.opengl.util.texture.*;
Texture noiseTexture;
try { noiseTexture = TextureIO.newTexture(new File(dataPath("noise.png")), false); }
catch (IOException e) { exit(); }

It works fine, when launching from processing. But running the applet in the browser gives:

java.security.AccessControlException: access denied (java.io.FilePermission null/data/noise.png read)
at java.security.AccessControlContext.checkPermission(AccessControlContext.java:264)
at java.security.AccessController.checkPermission(AccessController.java:427)
at java.lang.SecurityManager.checkPermission(SecurityManager.java:532)
at java.lang.SecurityManager.checkRead(SecurityManager.java:871)
at java.io.FileInputStream.<init>(FileInputStream.java:100)

As a solution I tried to load the image first as a BufferedImage and pass this to TextureIO.newTexture. It didn't work. It seems, I can't access any files from the data path using a FIle object.

… any ideas?

Replies(2)

blindfish

Re: Loading texture from data path: Access denied

2 years ago

Check the image is definitely present in the jar... Though the exception looks like the one you get when you need to sign the applet (also see my recent post on this subject); perhaps because there's a risk you're trying to perform file operations on the host machine.

parallela..

Re: Loading texture from data path: Access denied

2 years ago

Thanks for your reply!

The image is present in the jar. And I just signed the applet – but that didn't solve the problem.

However, I found that InputStream is supported by processing. Using this, everyhing works fine:

InputStream s = openStream("noise.png");
try { noiseTexture = TextureIO.newTexture(s, false, "PNG"); }
catch (IOException e) { exit(); }

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