这只是显示一个空白的黑色屏幕，如果我不把glutSwapBuffers（）在两个地方，它显示一个空白的白色屏幕？ [英] This just shows a blank black screen, and if I do not put glutSwapBuffers() in both places it shows a blank white screen?

问题描述

当我编译它，它使一个空白的blac屏幕，如果我从任一位置，或两者同时取出过氧化物交换缓冲区，我得到一个空白的白色屏幕，什么问题？

When I compile it, it makes a blank blac screen, if I take out glut swap buffers from either location, or both at the same time I get a blank white screen, whats the problem?

#ifdef __APPLE__
#include <GLUT/glut.h>
#else
#include <GL/glut.h>
#endif

#include <stdlib.h>



 void ProcessSpecialKeys(int key, int x, int y){

    switch(key){

       case GLUT_KEY_RIGHT:

exit(0);

       case GLUT_KEY_LEFT:

exit(0);

       case GLUT_KEY_UP:

exit(0);

       case GLUT_KEY_DOWN:

exit(0);

       default:

exit(0);

    }

}




void renderPrimitive(void){

    glBegin(GL_QUADS);
    glVertex3f(-1.0f,-1.0f,0.0f);
    glVertex3f(-1.0f,1.0f,0.0f);
    glVertex3f(1.0f,1.0f,0.0f);
    glVertex3f(1.0f,-1.0f,0.0f);
    glEnd();
}

void display(void){

    glTranslatef(0.0f,0.0f,-0.5f);
    renderPrimitive();
    glutSwapBuffers();
}

int main(int argc, char **argv) {

glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE | GLUT_RGBA);
glutInitWindowPosition(100,100);
glutInitWindowSize(320,320);
glutCreateWindow("Dimension");
glutDisplayFunc(display);

    glLoadIdentity();

    glutSpecialFunc(ProcessSpecialKeys);

glutMainLoop();

return 0;
}

推荐答案

0.5f，0.5f）;并删除glClearColor（0.5，0.5，0.5，1）;

Try glColor3f(0.5f, 0.5f, 0.5f); And remove glClearColor(0.5, 0.5, 0.5, 1);

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