Hello,
this renders 1 triangle, but glEnd() generates GL_INVALID_OPERATION. Any idea what’s invalid?
#include <GL/glut.h>
#include <cstdio>
void display()
{
glClear(GL_COLOR_BUFFER_BIT);
glBegin(GL_TRIANGLES);
glVertex3f(0,1,0);
glVertex3f(1,0,0);
glVertex3f(-1,-1,0);
printf("glGetError() before glEnd() returned 0x%x
",glGetError());
glEnd();
printf("glGetError() after glEnd() returned 0x%x
",glGetError());
glutSwapBuffers();
}
int main(int argc, char **argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_RGB);
glutInitWindowSize(640,480);
glutCreateWindow(“test”);
glutDisplayFunc(display);
glutMainLoop();
return 0;
}
Output is
glGetError() before glEnd() returned 0x0
glGetError() after glEnd() returned 0x502
GeForce 6150, haven’t tried Radeon yet.