OpenGL glewInit 因未知错误而失败

问题描述

我使用 glfw 和 glew 进行了非常基本的设置,但我无法让 glewInit 进行初始化。

我尝试将 glewExperimental 设置为 true,但效果不佳。

我当前的初始化代码如下所示。

#include <iostream>
#include <GL/glew.h>
#include <GLFW/glfw3.h>

int main(void)
{
    GLFWwindow *window;

    /* Initialize the library */
    if (!glfwInit())
        return -1;    

    /* Create a windowed mode window and its OpenGL context */
    window = glfwCreateWindow(640,480,"Hello World",NULL,NULL);
    if (!window)
    {
        glfwTerminate();
        return -1;
    }

    /* Make the window's context current */
    glfwMakeContextCurrent(window);    

    glewExperimental=true;
    GLenum err=glewInit();
    if(err!=GLEW_OK)
    {
        //Problem: glewInit failed,something is seriously wrong.
        std::cout << "Error: " << glewGetErrorString(err) <<std::endl;
    }

    std::cout << glGetString(GL_VERSION) << std::endl;

    /* Loop until the user closes the window */
    while (!glfwWindowShouldClose(window))
    {
        /* Render here */
        glClear(GL_COLOR_BUFFER_BIT);       

        /* Swap front and back buffers */
        glfwSwapBuffers(window);

        /* Poll for and process events */
        glfwPollEvents();
    }

    glfwTerminate();
    return 0;
}

输出:

Error: Unknown error
4.6 (Compatibility Profile) Mesa 21.0.3

我在 Fedora 34 上运行并安装了以下版本:

server glx version string: 1.4
client glx version string: 1.4
GLX version: 1.4
    Max core profile version: 4.6
    Max compat profile version: 4.6
    Max GLES1 profile version: 1.1
    Max GLES[23] profile version: 3.2
OpenGL core profile version string: 4.6 (Core Profile) Mesa 21.0.3
OpenGL core profile shading language version string: 4.60
OpenGL version string: 4.6 (Compatibility Profile) Mesa 21.0.3
OpenGL shading language version string: 4.60
OpenGL ES profile version string: OpenGL ES 3.2 Mesa 21.0.3
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20
    GL_EXT_shader_group_vote,GL_EXT_shader_implicit_conversions,

解决方法

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