我今天刚开始使用 freeGLUT,我已经很好地安装了所有东西。我能够创建一个基本窗口,但是每当我调用几乎所有渲染方法时,编译都会失败。我正在使用以下代码:
#include "math_lib.h"
#include <stdlib.h>
#include <GL/freeglut.h>
void render(void);
int main(int argc, char** argv) {
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE | GLUT_RGBA);
glutInitWindowPosition(100, 100);
glutInitWindowSize(640, 480);
glutCreateWindow("Simple GLUT Application");
glutDisplayFunc(render);
glutMainLoop();
}
void render(void) {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glBegin(GL_TRIANGLES);
glColor3f(1, 0, 0);
glVertex2f(-0.5, -0.5);
glColor3f(0, 1, 0);
glVertex2f(0.5, -0.5);
glColor3f(0, 0, 1);
glVertex2f(0.0, 0.5);
glEnd();
glutSwapBuffers();
}
我得到的错误是:
C:\Users\User\Dropbox\NetBeans Workspace\OpenGL_Testing/main.cpp:29: undefined reference to `glClear@4'
C:\Users\User\Dropbox\NetBeans Workspace\OpenGL_Testing/main.cpp:31: undefined reference to `glBegin@4'
C:\Users\User\Dropbox\NetBeans Workspace\OpenGL_Testing/main.cpp:32: undefined reference to `glColor3f@12'
C:\Users\User\Dropbox\NetBeans Workspace\OpenGL_Testing/main.cpp:33: undefined reference to `glVertex2f@8'
C:\Users\User\Dropbox\NetBeans Workspace\OpenGL_Testing/main.cpp:34: undefined reference to `glColor3f@12'
C:\Users\User\Dropbox\NetBeans Workspace\OpenGL_Testing/main.cpp:35: undefined reference to `glVertex2f@8'
C:\Users\User\Dropbox\NetBeans Workspace\OpenGL_Testing/main.cpp:36: undefined reference to `glColor3f@12'
C:\Users\User\Dropbox\NetBeans Workspace\OpenGL_Testing/main.cpp:37: undefined reference to `glVertex2f@8'
C:\Users\User\Dropbox\NetBeans Workspace\OpenGL_Testing/main.cpp:38: undefined reference to `glEnd@0'
那么我做错了什么还是我只是错过了导入?