多个Windows OpenGL/Glut

问题描述

我想知道如何打开多个OpenGL/Glut窗口.我的意思是同时多个窗口没有子窗口和不更新同一窗口

I would like to know how to open multiple OpenGL/Glut windows.And I mean multiple windows at the same timenot subwindows andnot update the same window

推荐答案

与创建一个窗口的方式相同，只是您应多次创建该窗口:

The same way as you would create one window, except you should do it multiple times :

#include <cstdlib>
#include <GL/glut.h>

// Display callback ------------------------------------------------------------

float clr = 0.2;

void display()
{
    // clear the draw buffer .
    glClear(GL_COLOR_BUFFER_BIT);   // Erase everything

    // set the color to use in draw
    clr += 0.1;
    if ( clr>1.0)
    {
        clr=0;
    }
    // create a polygon ( define the vertexs)
    glBegin(GL_POLYGON); {
        glColor3f(clr, clr, clr);
        glVertex2f(-0.5, -0.5);
        glVertex2f(-0.5,  0.5);
        glVertex2f( 0.5,  0.5);
        glVertex2f( 0.5, -0.5);
    } glEnd();

    glFlush();
}

// Main execution  function
int main(int argc, char *argv[])
{
    glutInit(&argc, argv);      // Initialize GLUT
    glutCreateWindow("win1");   // Create a window 1
    glutDisplayFunc(display);   // Register display callback
    glutCreateWindow("win2");   // Create a window 2
    glutDisplayFunc(display);   // Register display callback

    glutMainLoop();             // Enter main event loop
}

此示例显示如何设置相同的回调以在两个窗口中呈现.但是您可以为Windows使用不同的功能.

This example shows how to set the same callback to render in both windows. But you can use different functions for windows.

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