在Java中为JOGL释放直接缓冲区本机内存

import com.jogamp.common.nio.Buffers;
import com.jogamp.opengl.GL;
import com.jogamp.opengl.GL2;
import com.jogamp.opengl.GLAutoDrawable;
import com.jogamp.opengl.GLEventListener;
import com.jogamp.opengl.GLProfile;
import com.jogamp.opengl.awt.GLCanvas;
import com.jogamp.opengl.util.BufferUtils;

import javax.swing.*;
import java.nio.FloatBuffer;

public class JOGLExample implements GLEventListener {

    private FloatBuffer vertexBuffer;

    @Override
    public void init(GLAutoDrawable drawable) {
        GL2 gl = drawable.getGL().getGL2();

        // 创建一个顶点数组
        float[] vertices = {
                -0.5f, -0.5f, 0.0f,
                0.5f, -0.5f, 0.0f,
                0.0f, 0.5f, 0.0f
        };

        // 创建一个直接缓冲区
        vertexBuffer = BufferUtils.newDirectFloatBuffer(vertices.length);
        vertexBuffer.put(vertices);
        vertexBuffer.flip();

        // 设置顶点数组
        gl.glEnableClientState(GL2.GL_VERTEX_ARRAY);
        gl.glVertexPointer(3, GL.GL_FLOAT, 0, vertexBuffer);
    }

    @Override
    public void display(GLAutoDrawable drawable) {
        GL2 gl = drawable.getGL().getGL2();

        // 渲染代码
        gl.glClear(GL.GL_COLOR_BUFFER_BIT);
        gl.glDrawArrays(GL.GL_TRIANGLES, 0, 3);
        gl.glFlush();
    }

    @Override
    public void dispose(GLAutoDrawable drawable) {
        GL2 gl = drawable.getGL().getGL2();

        // 释放直接缓冲区本机内存
        BufferUtils.destroyDirectBuffer(vertexBuffer);
    }

    @Override
    public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {
        // 窗口大小改变时的处理
    }

    public static void main(String[] args) {
        // 创建JOGL窗口
        GLProfile profile = GLProfile.get(GLProfile.GL2);
        GLCapabilities capabilities = new GLCapabilities(profile);
        GLCanvas canvas = new GLCanvas(capabilities);

        JOGLExample example = new JOGLExample();
        canvas.addGLEventListener(example);

        JFrame frame = new JFrame("JOGL Example");
        frame.getContentPane().add(canvas);
        frame.setSize(800, 600);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
    }
}