#include <GL/glut.h>
void init()
{
glEnable(GL_DEPTH_TEST);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glEnable(GL_COLOR_MATERIAL);
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
GLint viewport[4];
glGetIntegerv(GL_VIEWPORT, viewport);
double aspect = (double)viewport[2]/(double)viewport[3];
gluPerspective(60, aspect, 1, 100);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
// move back a bit
glTranslatef(0, 0, -35);
static float angle = 0;
angle += 1.0f;
glPushMatrix();
glTranslatef(0,0,0);
glRotatef(angle, 0.1, 0.2, 0.5);
glColor3ub(255,0,255);
glutSolidCube(5);
glPopMatrix();
glPushMatrix();
glTranslatef(10,-10,0);
glRotatef(angle, 0.1, 0.2, 0.5);
glColor3ub(255,0,0);
glutSolidCube(5);
glPopMatrix();
glPushMatrix();
glTranslatef(10,10,0);
glRotatef(angle, 0.1, 0.2, 0.5);
glColor3ub(0,255,0);
glutSolidCube(5);
glPopMatrix();
glPushMatrix();
glTranslatef(-10,10,0);
glRotatef(angle, 0.1, 0.2, 0.5);
glColor3ub(0,0,255);
glutSolidCube(5);
glPopMatrix();
glPushMatrix();
glTranslatef(-10,-10,0);
glRotatef(angle, 0.1, 0.2, 0.5);
glColor3ub(255,255,0);
glutSolidCube(5);
glPopMatrix();
glutSwapBuffers();
}
void reshape(int w, int h)
{
glViewport(0, 0, w, h);
}
void timer(int extra)
{
glutPostRedisplay();
glutTimerFunc(16, timer, 0);
}
int main(int argc, char **argv)
{
glutInit(&argc, argv);
glutInitWindowSize(640,480);
glutInitDisplayMode(GLUT_RGBA | GLUT_DEPTH | GLUT_DOUBLE);
glutCreateWindow("CUBES");
glutDisplayFunc(display);
glutReshapeFunc(reshape);
glutTimerFunc(0, timer, 0);
init();
glutMainLoop();
return 0;
}
你可以在那裏插入一些glGetError調用嗎?檢查它是否非零。 – Tim
該問題是類似於[這一個](http://stackoverflow.com/questions/1064/how-to-display-100-floating-cubes-using-directx-or-opengl) – toolchainX
我在每個之後添加glGetError調用glutSolidCube行,它始終爲0 – Bob