如何解决我的OpenGL程序中的"计算机"问题？glew32.dll？

Question

当我尝试构建并运行我的OpenGL + GLEW + GLFW程序时,它构建得很好但不会运行,给我这个错误: "The program can't start because glew32.dll is missing from your computer. Try reinstalling the program to fix this problem."

我glew32.lib作为静态库链接.我也在用#define GLEW_STATIC.

那么,为什么程序会提示输入DLL文件？

#include <iostream>

//#define GLEW_STATIC

// GLEW
#include <include/GL/glew.h>

// GLFW
#include <include/GLFW/glfw3.h>

//we define GLEW_STATIC, since we’re using the static version of the GLEW library.
#define GLEW_STATIC


// Is called whenever a key is pressed/released via GLFW
void key_callback(GLFWwindow* window, int key, int scancode, int action, int mode)
{
    std::cout << key << std::endl;

    if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS)
    {
        //we close GLFW by setting its WindowShouldClose 
        //property to true.
        glfwSetWindowShouldClose(window, GL_TRUE);
    }
}

// Window dimensions
const GLuint WIDTH = 800, HEIGHT = 600;

// The MAIN function, from here we start the application and run the game loop
int main()
{
    std::cout << "Starting GLFW context, OpenGL 3.3" << std::endl;
    // Initializes GLFW
    glfwInit();
    // Set all the required options for GLFW
    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
    glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);

    // Create a GLFWwindow object that we can use for GLFW's functions
    GLFWwindow * window = glfwCreateWindow(WIDTH, HEIGHT, "LearnOpenGL", nullptr, nullptr);
    glfwMakeContextCurrent(window);
    if (window == NULL)
    {
        std::cout << "Failed to create GLFW window" << std::endl;
        glfwTerminate();
        return -1;
    }

    // Set the required callback functions
    glfwSetKeyCallback(window, key_callback);

    // Set this to true so GLEW knows to use a modern approach to retrieving function pointers and extensions
    glewExperimental = GL_TRUE;
    // Initialize GLEW to setup the OpenGL Function pointers
    if (glewInit() != GLEW_OK)
    {
        std::cout << "Failed to initialize GLEW" << std::endl;
        return -1;
    }    

    // Define the viewport dimensions
    glViewport(0, 0, WIDTH, HEIGHT);

    // Game loop
    while (!glfwWindowShouldClose(window))
    {
        // Check if any events have been activiated (key pressed, mouse moved etc.) and call corresponding response functions
        glfwPollEvents();

        // Render
        // Clear the colorbuffer
        glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
        glClear(GL_COLOR_BUFFER_BIT);

        // Swap the screen buffers
        glfwSwapBuffers(window);
    }

    // Terminate GLFW, clearing any resources allocated by GLFW.
    glfwTerminate();
    return 0;
}

Answer 1

我正在链接glew32.lib

这就是你出错的地方,glew32.lib是DLL版本的导入库.如果您不想依赖glew32.dll,则需要链接静态链接库.它的名字是glew32s.lib.否则定义GLEW_STATIC对此没有影响.

猜测这可能出错了,请注意SourceForge上提供的预构建二进制文件只包含glew32.lib.你必须自己构建glew32s.lib.这通常是一个非常困难的要求,使用完全相同的编译器版本和编译器选项来构建其余代码非常重要.阅读项目的readme.txt文件以获取构建说明,无论如何使用提供的项目文件构建MSVC都没有任何问题.

库名称的完整列表:

• glew32.lib:发布版本,需要glew32.dll
• glew32d.lib:debug build,需要glew32d.dll
• glew32s.lib:发布版本,静态链接库
• glew32sd.lib:debug build,静态链接库

您也可以选择构建这些库的MX(多个渲染上下文)版本,并在其名称后附加"mx".

Answer 2

从此处下载glew http://glew.sourceforge.net/
解压缩。
转到glew-1.13.0 \ bin \ Release \ Win32（glew-1.13.0是您解压缩的glew文件夹），
其中有一个名为“ glew32.dll”
将“ glew32.dll” 复制到
Visual Studio 项目C：\ Users \ Thien \ Documents \ Visual Studio 2015 \ Projects \ your_project_name \ Debug中的Debug文件夹中

然后按f5键运行

Answer 3

glew32.dll 不是标准 DLL。使用它的其他程序很可能静态链接它或将 DLL 安装在其可执行文件旁边。我建议您将 GLEW 静态链接到您的程序。http://glew.sourceforge.net/install.html记录了如何进行静态或动态链接构建。