检查代码中是否正确设置了OpenGL上下文。若代码中使用了多个OpenGL上下文，则需要确保每个上下文在调用bgfx前都已经成功地绑定到当前线程中。另外，确保OpenGL上下文与当前所用的窗口匹配，即上下文对应于正确的X窗口ID。以下示例代码演示如何通过GLX库的函数来正确设置OpenGL上下文并解决glxBadDrawable错误：

#include 
#include 

int main(int argc, char** argv) {
    Display* dpy = XOpenDisplay(NULL);
    if (dpy == NULL) {
        printf("Error opening display.\n");
        return 1;
    }
    
    int scr = DefaultScreen(dpy);
    Window root = RootWindow(dpy, scr);
    
    int glAttribs[] = { GLX_RGBA, GLX_DEPTH_SIZE, 24, GLX_DOUBLEBUFFER, None };
    XVisualInfo* vi = glXChooseVisual(dpy, scr, glAttribs);
    if (vi == NULL) {
        printf("Error finding compatible visual.\n");
        return 1;
    }
    
    GLXContext ctx = glXCreateContext(dpy, vi, NULL, True);
    if (ctx == NULL) {
        printf("Error creating GLX context.\n");
        return 1;
    }
    
    Window win = XCreateWindow(dpy, root, 0, 0, 640, 480, 0, vi->depth, InputOutput, vi->visual, 0, NULL);
    XMapWindow(dpy, win);
    glXMakeCurrent(dpy, win, ctx);
    
    // Now we have a valid OpenGL context and window
    // We can initialize bgfx with this context
    bgfx::renderFrame();
    
    glXMakeCurrent(dpy, None, NULL);
    glXDestroyContext(dpy, ctx);
    XDestroyWindow(dpy, win);
    XCloseDisplay(dpy);
    
    return 0;
}