GLUT 窗口变黑“（无响应）”当CPU繁忙时

发布于 2024-09-30 05:04:36 字数 752 浏览 6 评论 0原文

我正在编写光线追踪器并使用 GLUT 来显示结果。我在子块中渲染图像，渲染每个子块后我更新视图。

发生的情况是，我看到渲染进度，但几秒钟后，渲染窗口变黑，窗口标题显示“（未响应）”。然而，渲染进程继续运行（CPU 使用率为 100%）并在控制台输出上输出进度信息。渲染完成后，GLUT 窗口将恢复正常并显示图像。

我该怎么做才能让窗口在渲染过程中保持响应而不变黑？

谢谢！

//编辑：我显然在等待渲染线程时阻塞了我的主线程：

while(true){
    if(m_activeRenderThreads==0)
        break;
    ::WaitForSingleObject(updateEvent->m_hObject, 200);
    notifyObservers(); //inherited from IFunctionObservable
}

notifyObservers()调用：

update(){
    glClear(GL_COLOR_BUFFER_BIT);
    glViewport(0,0,resX,resY);
    glRasterPos2i(-1,-1);
    glDrawPixels(resX, resY, GL_RGB, GL_FLOAT, renderBuffer);
    glutSwapBuffers();
}

最后一个函数仅在我从主线程调用它时才起作用。通过渲染线程调用它不会更新我的窗口

原文

I'm programming a raytracer and use GLUT to display the result. I render the the image in subblocks and after rendering each subblock i update the view.

What happens is that i see the render progress, but after some seconds, the render window turns black and the window caption reads "(not responding)". the renderprocess however continues to run (at 100% cpu usage) and outputs progressinfo on the console output. once the rendering is finished, the GLUT window turns back to normal and displays the image.

What can I do in order to keep the window responding during the rendering process so that it doesn't turn black?

Thanks!

//edit: I aparently block my mainthread while waiting for the render threads:

while(true){
    if(m_activeRenderThreads==0)
        break;
    ::WaitForSingleObject(updateEvent->m_hObject, 200);
    notifyObservers(); //inherited from IFunctionObservable
}

notifyObservers() calls:

update(){
    glClear(GL_COLOR_BUFFER_BIT);
    glViewport(0,0,resX,resY);
    glRasterPos2i(-1,-1);
    glDrawPixels(resX, resY, GL_RGB, GL_FLOAT, renderBuffer);
    glutSwapBuffers();
}

this last function works only if I call it from the mainthread. calling it through the renderthreads doesn't update my window

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