我通过http://learnopengl.com/学习OpenGL但是当我试图绑定' hello三角形中的缓冲区时,我正在崩溃。本教程的一部分。我之前在C ++方面有过编码经验,但我无法解决问题。
我的代码:
#include <iostream>
#define GLEW_STATIC
#include <GL/glew.h>
#include <GL/glfw3.h>
#include <GL/gl.h>
using namespace std;
const GLuint WIDTH = 800, HEIGHT = 600;
void key_callback(GLFWwindow* window, int key, int scancode, int action, int mode);
int initializeWindow(GLFWwindow* window);
int main() {
GLFWwindow* window;
cout << "Creating Triangles" << endl;
GLfloat triangles[] = {
-0.5f, -0.5f, 0.0f,
0.5f, -0.5f, 0.0f,
0.5f, 0.5f, 0.0f
};
cout << "Initialising GLFW" << endl;
glfwInit();
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);
cout << "Initialising Window..." << endl;
window = glfwCreateWindow(WIDTH, HEIGHT, "LearnOpenGL", NULL, NULL);
cout << "Setting Callback Functions..." << endl;
glfwSetKeyCallback(window, key_callback);
cout << "Binding Buffers" << endl;
GLuint VBO;
glGenBuffers(1, &VBO); // <--- Crashing here
glBindBuffer(GL_ARRAY_BUFFER, VBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(triangles), triangles, GL_STATIC_DRAW);
if (initializeWindow(window) == -1) {
return -1;
}
while(!glfwWindowShouldClose(window)) {
glfwPollEvents();
glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
glfwSwapBuffers(window);
}
cout << "Terminating..." << endl;
glfwTerminate();
return 0;
}
int initializeWindow(GLFWwindow* window) {
if (window == NULL) {
cout << "Failed to create GLFW window... exiting" << endl;
glfwTerminate();
return -1;
}
glfwMakeContextCurrent(window);
glewExperimental = GL_TRUE;
if(glewInit() != GLEW_OK) {
cout << "Failed to initialize GLEW... exiting" << endl;
return -1;
}
int width, height;
glfwGetFramebufferSize(window, &width, &height);
glViewport(0, 0, width, height);
return 0;
}
void key_callback(GLFWwindow* window, int key, int scancode, int action, int mode) {
if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS) {
glfwSetWindowShouldClose(window, GL_TRUE);
}
}
我只是一个通用的&#39;没有回应&#39;崩溃,控制台没有错误。非常感谢任何帮助,谢谢。
答案 0 :(得分:2)
您需要在窗口创建之后和任何对gl函数的调用之前调用initializeWindow
。这是必要的,以便使当前窗口处于活动状态并初始化glew(这些操作在initializewindow
内完成)