GLFW 错误 #65544 "Failed to initialize GLFW"

Question

这是我的代码：

#include <iostream>
#include <GLFW/glfw3.h>
int main(void){
GLFWwindow* window;
if(!glfwInit()){
std::cout << "Failed to initialize GLFW!" << std::endl;
return -1;
}
window = glfwCreateWindow(640, 480, "Hello World", NULL, NULL);
if(!window){
glfwTerminate();
std:: cout << "Failed to initialize Window!" << std::endl;
return -1;
}
glfwMakeContextCurrent(window);
while(!glfwWindowShouldClose(window)){
glClear(GL_COLOR_BUFFER_BIT);
glfwSwapBuffers(window);
glfwPollEvents();
}
glfwTerminate();
return 0;
}

我成功地链接并编译了它，但我遇到了运行时错误它说glfw初始化失败。我试图在C中使用glfw，但这个错误显示

Wayland: Failed to connect to display
The GLFW library is not initialized
main: ./src/posix_thread.c:64: _glfwPlatformGetTls: Assertion `tls->posix.allocated == GLFW_TRUE' failed.
Aborted (core dumped)

我正在使用popOS 22.04 LTS，我是c++和glfw的新手，请帮助我解决这个问题

Answer 1

问题

之所以会出现这些错误，是因为glfw框架在用于创建窗口之前没有机会进行初始化。因此，glfw将返回给定的错误消息。

Wayland: Failed to connect to display
The GLFW library is not initialized
main: ./src/posix_thread.c:64: _glfwPlatformGetTls: Assertion `tls-posix.allocated == GLFW_TRUE' failed.
Aborted (core dumped)

解决方案

要解决此问题，请尝试移动代码段

if(!glfwInit()){
std::cout << "Failed to initialize GLFW!" << std::endl;
return -1;
}

在主函数开头的GLFWwindow* window声明之上。

快速提示

尝试在一行中声明并初始化窗口，如下所示：GLFWwindow* window = glfwCreateWindow(WIDTH, HEIGHT, "GLFW WINDOW", NULL, NULL)它更容易阅读，总体上有助于减少代码行数。