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A royalty-free, cross-platform API for full-function 2D and 3D graphics on embedded systems - including consoles, phones, appliances and vehicles.

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/*
 * Copyright LWJGL. All rights reserved.
 * License terms: https://www.lwjgl.org/license
 * MACHINE GENERATED FILE, DO NOT EDIT
 */
package org.lwjgl.opengles;

import org.lwjgl.system.*;

import static org.lwjgl.system.MemoryUtil.*;

/** Instances of this class may be passed to the {@link GLES32#glDebugMessageCallback DebugMessageCallback} method. */
public abstract class GLDebugMessageCallback extends Callback implements GLDebugMessageCallbackI {

    /** Creates a {@code GLDebugMessageCallback} instance from the specified function pointer. */
    public static GLDebugMessageCallback create(long functionPointer) {
        if (functionPointer == NULL) {
            return null;
        }

        GLDebugMessageCallbackI instance = Callback.get(functionPointer);
        return instance instanceof GLDebugMessageCallback
            ? (GLDebugMessageCallback)instance
            : new Container(functionPointer, instance);
    }

    /** Creates a {@code GLDebugMessageCallback} instance that delegates to the specified {@code GLDebugMessageCallbackI} instance. */
    public static GLDebugMessageCallback create(GLDebugMessageCallbackI instance) {
        return instance instanceof GLDebugMessageCallback
            ? (GLDebugMessageCallback)instance
            : new Container(instance.address(), instance);
    }

    protected GLDebugMessageCallback() {
        super(SIGNATURE);
    }

    private GLDebugMessageCallback(long functionPointer) {
        super(functionPointer);
    }

    /**
     * Converts the specified {@link GLDebugMessageCallback} arguments to a String.
     *
     * This method may only be used inside a GLDebugMessageCallback invocation.
     *
     * @param length  the GLDebugMessageCallback {@code length} argument
     * @param message the GLDebugMessageCallback {@code message} argument
     *
     * @return the message as a String
     */
    public static String getMessage(int length, long message) {
        return memUTF8(memByteBuffer(message, length));
    }

    private static final class Container extends GLDebugMessageCallback {

        private final GLDebugMessageCallbackI delegate;

        Container(long functionPointer, GLDebugMessageCallbackI delegate) {
            super(functionPointer);
            this.delegate = delegate;
        }

        @Override
        public void invoke(int source, int type, int id, int severity, int length, long message, long userParam) {
            delegate.invoke(source, type, id, severity, length, message, userParam);
        }

    }

}