我正在嘗試在單獨(dú)的線程中渲染來自處理草圖的幀。Processing 有一個loadPixels()函數(shù)。問題在于 OpenGL 渲染器（P2D或P3D在處理中。）：PGraphicsOpenGL loadPixels()這是我的示例草圖：void setup(){  size(300,300,P2D);  noFill();  background(255);  rectMode(CENTER);  stroke(0,32);  smooth(8);  // instantiate and start rendering thread  new PNGRenderer(this);}void draw(){  // draw moving shapes  translate(width * 0.5, height * 0.5);  rotate(sin(frameCount * 0.075));  scale(sin(frameCount * 0.01));  translate(cos(frameCount * 0.01) * width * 0.1,sin(frameCount * 0.01) * height * 0.1);  rect(0,0,width * .9,height * .9);}public class PNGRenderer implements Runnable{  PApplet parent;  PImage  frame;  boolean shouldSave = false;  int savedFrameCount;  boolean isRunning = true;  PNGRenderer(PApplet parent){    this.parent = parent;    this.parent.registerMethod("draw",this);    frame = createImage(parent.width,parent.height,ARGB);    frame.loadPixels();    Thread renderThread = new Thread(this);    renderThread.setName("Renderer-Thread");    renderThread.start();  }  public void draw(){    // all is well if I sample pixels in the same OpenGL thread    //parent.loadPixels();    shouldSave = true;  }   synchronized void sampleAndSavePixels(){    if(shouldSave){      // program crashes if I try to save in a separate thread      parent.loadPixels();      arrayCopy(parent.pixels,frame.pixels);      frame.updatePixels();      frame.save(dataPath("frames/frame_"+nf(savedFrameCount++,4)+".png"));      println("saved frame",savedFrameCount);      shouldSave = false;    }  }  public void run(){    while(isRunning){      sampleAndSavePixels();    }  }}據(jù)我所知（到目前為止我還不是 OpenGL 向?qū)В┳x取像素需要在同一個 OpenGL 線程中完成。這是我試圖避免的放緩。