在C編程中繪製3D立方體

Question

我目前正在練習如何在C中繪製3D立方體，但是在編譯過程中，我得到了這個錯誤。

/tmp/ccAuvH6Y.o: In function `DrawCube': 
cube3D.c:(.text+0x1e4): undefined reference to `XGetWindowAttributes' 
cube3D.c:(.text+0x203): undefined reference to `glViewport' 
cube3D.c:(.text+0x223): undefined reference to `glClearColor' 
cube3D.c:(.text+0x22d): undefined reference to `glClear' 
cube3D.c:(.text+0x245): undefined reference to `glColor3f' 
cube3D.c:(.text+0x24a): undefined reference to `glPushMatrix' 
cube3D.c:(.text+0x26c): undefined reference to `glRotatef' 
cube3D.c:(.text+0x276): undefined reference to `glEnableClientState' 
cube3D.c:(.text+0x280): undefined reference to `glEnableClientState' 
cube3D.c:(.text+0x29b): undefined reference to `glColorPointer' 
cube3D.c:(.text+0x2b9): undefined reference to `glVertexPointer' 
cube3D.c:(.text+0x2d4): undefined reference to `glDrawElements' 
cube3D.c:(.text+0x2d9): undefined reference to `glPopMatrix' 
cube3D.c:(.text+0x2f2): undefined reference to `glXSwapBuffers' 
/tmp/ccAuvH6Y.o: In function `main': 
cube3D.c:(.text+0x385): undefined reference to `XOpenDisplay' 
cube3D.c:(.text+0x441): undefined reference to `glXChooseVisual' 
cube3D.c:(.text+0x4c9): undefined reference to `XCreateColormap' 
cube3D.c:(.text+0x548): undefined reference to `XCreateWindow' 
cube3D.c:(.text+0x568): undefined reference to `XMapWindow' 
collect2: error: ld returned 1 exit status 

我的代碼如下。

#include <stdio.h> 
#include <stdlib.h> 
#include <X11/Xlib.h> 
#include <X11/Xutil.h> 
#include <X11/Xos.h> 
#include <X11/Xatom.h> 

#include <GL/gl.h> 
#include <GL/glx.h> 
#include <GL/glu.h> 



Display *dpy; 
XWindowAttributes winattr; 
Window win; 


void DrawCube(void){ 

float vertsCoords[] = { 
     0.5f, 0.5f, 0.5f, 
     -0.5f, 0.5f, 0.5f, 
     -0.5f,-0.5f,0.5f, 
     0.5f,-0.5f,0.5f, 
     0.5f,-0.5f,-0.5f, 
     0.5f,0.5f,-0.5f, 
     -0.5f,0.5f,-0.5f, 
     -0.5f,-0.5f,-0.5f, 
}; 

GLubyte indices [] = { 
     0,1,2,3, 
     5,0,3,4, 
     5,6,7,4, 
     5,6,1,0, 
     1,6,7,2, 
     7,4,3,2, 


}; 
GLubyte colors[]={ 
     255,0,0, 
     0,255,0, 
     0,0,255, 
     255,255,0, 
     0,255,255, 
     255,0,255, 
     255,255,255, 
     0,0,0, 


}; 


static int angle = 0; 
     XGetWindowAttributes(dpy,win, &winattr); 
     glViewport(0,0,winattr.width,winattr.height); 

     glClearColor(0.7f,0.7f,0.7f,0.0f); 
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); 
     glColor3f(0.0f,0.9f,1.0f); 

     glPushMatrix(); 
     glRotatef(angle,0.5,1.0,0.0); 
#if 0 

     glBegin(GL_TRIANGLES); 
     glVertex3f(0.0f,-0.2f,0.5f); 
     glVertex3f(-0.5f,0.3f,0.5f); 
     glVertex3f(0.5f,0.6f,0.5f); 
     glEnd(); 

#endif 

     glEnableClientState(GL_VERTEX_ARRAY); 
     glEnableClientState(GL_COLOR_ARRAY); 
     glColorPointer(3,GL_UNSIGNED_BYTE,0,colors); 
     glVertexPointer(3,GL_FLOAT,0,vertsCoords); 

     glDrawElements(GL_QUADS,24,GL_UNSIGNED_BYTE,indices); 
     glPopMatrix(); 
     glXSwapBuffers(dpy,win); 
     usleep(5000); 
     angle += 1; 

     } 
int main(int argc, char *agrv[]) 
{ 
    int screen; 
    Window root_win; 
    XEvent event; 
    unsigned depth; 
    XSetWindowAttributes attrs; 

    GLint att [] = {GLX_RGBA, GLX_DEPTH_SIZE,24,GLX_DOUBLEBUFFER,None}; 

    XVisualInfo *visual; 
    GLXContext glc; 

    if ((dpy = XOpenDisplay(NULL)) == NULL) { 
     fprintf(stderr,"Can't Open Display\n"); 
     exit(1); 
    } 

    screen = DefaultScreen(dpy); 
    depth = DefaultDepth(dpy,screen); 
    root_win = RootWindow(dpy,screen); 

    visual = glXChooseVisual(dpy,screen,att); 

    attrs.border_pixel = BlackPixel(dpy,screen); 
    attrs.background_pixel = WhitePixel(dpy,screen); 
    attrs.override_redirect = True; 
    attrs.colormap = XCreateColormap(dpy,root_win,visual->visual,AllocNone); 
    attrs.event_mask = ExposureMask | KeyPressMask; 

    win = XCreateWindow(dpy, root_win, 200, 200, 600, 500, 0, 
         visual->depth, InputOutput, 
         visual->visual, 
         CWBackPixel|CWColormap|CWBorderPixel|CWEventMask, 
         &attrs); 

    XMapWindow(dpy,win); 
} 

Answer 1

您還沒有鏈接庫。

-lgl（或類似的）