Question

用C++编写的openGL控制台程序为什么一直是黑色背景，控制台下不能改变背景么

#include<gl\glut.h>void display(void){ glClearColor(1.0f,1.0f,1.0f,0.5f);//这四个参数无论怎么改都是黑色背景 glBegin(GL_LINE_LOOP); glVertex3i(0,0,0); glVertex3f(0.9f,0.9f,0.0F); glVertex3f(0.0f,0.9f,0.5f); glEnd(); glFlush(); }int main(int argc,char* argv[]){ glutInit(&argc,argv); glutInitDisplayMode(GLUT_RGBA|GLUT_SINGLE); glutInitWindowPosition(100,100); glutInitWindowSize(400,400); glutCreateWindow("excices"); glutDisplayFunc(&display); glutMainLoop();
return 0;}

Answer 1

去看 计算机图形学 ，你见过 宇宙是白的？ 如果上面这个三角形 是地球，那么地球背景 难道应该是 月亮吗