写一个glad的简单但马
时间: 2024-05-29 14:10:04 浏览: 20
虽然我是AI语言模型,无法感受到马的存在,但我可以帮你写一个简单的glad:
Glad是一个轻量级的OpenGL加载器,它可以自动检测你的系统支持的OpenGL版本并加载对应的函数指针,让你方便地使用OpenGL API进行图形渲染。
使用Glad非常简单,只需要在你的代码中包含头文件,然后在初始化OpenGL之后调用gladLoadGL()函数即可。之后就可以愉快地使用OpenGL API进行各种图形渲染了。
如果你想要更加详细的信息,可以查看Glad的官方文档。
希望这个简单的glad对你有帮助!
相关问题
现代opengl和glad写一个简单代码
以下是一个简单的现代OpenGL程序,使用GLAD库加载OpenGL函数:
```c++
#include <glad/glad.h>
#include <GLFW/glfw3.h>
#include <iostream>
void framebuffer_size_callback(GLFWwindow* window, int width, int height);
void processInput(GLFWwindow *window);
// settings
const unsigned int SCR_WIDTH = 800;
const unsigned int SCR_HEIGHT = 600;
int main()
{
// glfw: initialize and configure
glfwInit();
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
// glfw window creation
GLFWwindow* window = glfwCreateWindow(SCR_WIDTH, SCR_HEIGHT, "LearnOpenGL", NULL, NULL);
if (window == NULL)
{
std::cout << "Failed to create GLFW window" << std::endl;
glfwTerminate();
return -1;
}
glfwMakeContextCurrent(window);
glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
// glad: load all OpenGL function pointers
if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress))
{
std::cout << "Failed to initialize GLAD" << std::endl;
return -1;
}
// render loop
while (!glfwWindowShouldClose(window))
{
// input
processInput(window);
// render commands here
glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
// glfw: swap buffers and poll IO events (keys pressed/released, mouse moved etc.)
glfwSwapBuffers(window);
glfwPollEvents();
}
// glfw: terminate, clearing all previously allocated GLFW resources.
glfwTerminate();
return 0;
}
// process all input: query GLFW whether relevant keys are pressed/released this frame and react accordingly
void processInput(GLFWwindow *window)
{
if (glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS)
glfwSetWindowShouldClose(window, true);
}
// glfw: whenever the window size changed (by OS or user resize) this callback function executes
void framebuffer_size_callback(GLFWwindow* window, int width, int height)
{
// make sure the viewport matches the new window dimensions; note that width and
// height will be significantly larger than specified on retina displays.
glViewport(0, 0, width, height);
}
```
这个程序创建一个800x600的GLFW窗口,并使用GLAD库加载OpenGL函数。在渲染循环中,程序将窗口清除为灰色,并使用显卡将渲染结果显示在窗口中。程序还处理了窗口大小改变的情况,确保视图区域始终覆盖整个窗口。
用glad写个鼠标交互例子
以下是使用glad库编写的一个简单的鼠标交互例子,它会在鼠标点击时改变屏幕背景颜色:
```c++
#include <glad/glad.h>
#include <GLFW/glfw3.h>
#include <iostream>
void framebuffer_size_callback(GLFWwindow* window, int width, int height);
void processInput(GLFWwindow *window);
const unsigned int SCR_WIDTH = 800;
const unsigned int SCR_HEIGHT = 600;
int main()
{
// 初始化GLFW
glfwInit();
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
// 创建窗口对象
GLFWwindow* window = glfwCreateWindow(SCR_WIDTH, SCR_HEIGHT, "Mouse Interaction", NULL, NULL);
if (window == NULL)
{
std::cout << "Failed to create GLFW window" << std::endl;
glfwTerminate();
return -1;
}
glfwMakeContextCurrent(window);
// 初始化GLAD
if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress))
{
std::cout << "Failed to initialize GLAD" << std::endl;
return -1;
}
// 设置视口大小
glViewport(0, 0, SCR_WIDTH, SCR_HEIGHT);
// 注册回调函数
glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
// 渲染循环
while (!glfwWindowShouldClose(window))
{
// 处理输入
processInput(window);
// 渲染指令
glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
// 交换缓冲区
glfwSwapBuffers(window);
glfwPollEvents();
}
// 释放GLFW资源
glfwTerminate();
return 0;
}
void framebuffer_size_callback(GLFWwindow* window, int width, int height)
{
glViewport(0, 0, width, height);
}
void processInput(GLFWwindow *window)
{
if (glfwGetMouseButton(window, GLFW_MOUSE_BUTTON_LEFT) == GLFW_PRESS)
{
float r = (float)rand() / RAND_MAX;
float g = (float)rand() / RAND_MAX;
float b = (float)rand() / RAND_MAX;
glClearColor(r, g, b, 1.0f);
}
if (glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS)
glfwSetWindowShouldClose(window, true);
}
```
在这个例子中,我们注册了一个回调函数`framebuffer_size_callback`,该函数在窗口大小发生变化时被调用,以重新设置视口大小。我们还注册了另一个回调函数`processInput`,该函数在每个渲染循环中被调用,以检查用户是否按下ESC键或左键,如果用户按下左键,则随机生成一个颜色并将其设置为背景颜色。
在`main`函数中,我们初始化GLFW和GLAD,创建窗口对象并设置视口大小。然后,我们进入渲染循环,处理输入,清除屏幕并交换缓冲区。最后,我们释放GLFW资源并返回0。
请注意,本例中使用了C++11的随机数生成器(`rand()`函数),因此您需要在编译时启用C++11支持。