1 files changed, 13 insertions, 8 deletions
diff --git a/src/jogl/classes/jogamp/opengl/util/pngj/chunks/PngChunkUNKNOWN.java b/src/jogl/classes/jogamp/opengl/util/pngj/chunks/PngChunkUNKNOWN.java
index 15a35935a..3803428e6 100644
--- a/src/jogl/classes/jogamp/opengl/util/pngj/chunks/PngChunkUNKNOWN.java
+++ b/src/jogl/classes/jogamp/opengl/util/pngj/chunks/PngChunkUNKNOWN.java
@@ -2,7 +2,12 @@ package jogamp.opengl.util.pngj.chunks;
 
 import jogamp.opengl.util.pngj.ImageInfo;
 
-public class PngChunkUNKNOWN extends PngChunk { // unkown, custom or not
+/**
+ * Placeholder for UNKNOWN (custom or not) chunks.
+ * <p>
+ * For PngReader, a chunk is unknown if it's not registered in the chunk factory
+ */
+public class PngChunkUNKNOWN extends PngChunkMultiple { // unkown, custom or not
 
 	private byte[] data;
 
@@ -10,25 +15,25 @@ public class PngChunkUNKNOWN extends PngChunk { // unkown, custom or not
 		super(id, info);
 	}
 
-	@Override
-	public boolean allowsMultiple() {
-		return true;
-	}
-
 	private PngChunkUNKNOWN(PngChunkUNKNOWN c, ImageInfo info) {
 		super(c.id, info);
 		System.arraycopy(c.data, 0, data, 0, c.data.length);
 	}
 
 	@Override
-	public ChunkRaw createChunk() {
+	public ChunkOrderingConstraint getOrderingConstraint() {
+		return ChunkOrderingConstraint.NONE;
+	}
+
+	@Override
+	public ChunkRaw createRawChunk() {
 		ChunkRaw p = createEmptyChunk(data.length, false);
 		p.data = this.data;
 		return p;
 	}
 
 	@Override
-	public void parseFromChunk(ChunkRaw c) {
+	public void parseFromRaw(ChunkRaw c) {
 		data = c.data;
 	}