N
Okay!
Ich habe nochmal einen neuen Code geschrieben mit Initialisierung und hab den Context mit reingepackt.
#include "stdafx.h"
#include <iostream>
#define GLEW_STATIC
#include <glew.h>
#include <glfw3.h>
// Function prototypes
void key_callback(GLFWwindow* window, int key, int scancode, int action, int mode);
// Window dimensions
const GLuint WIDTH = 800, HEIGHT = 600;
int main()
{
std::cout << "Starting GLFW context, OpenGL 3.3" << std::endl;
// Init 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);
if (window == nullptr)
{
std::cout << "Failed to create GLFW window" << std::endl;
glfwTerminate();
return -1;
}
glfwMakeContextCurrent(window);
// Set the required callback functions
glfwSetKeyCallback(window, key_callback);
std::cout << "GLFW init" << std::endl;
system("pause");
glewExperimental = GL_TRUE;
// Initialize GLEW to setup the OpenGL Function pointers
if (glewInit() != GLEW_OK)
{
std::cout << "Failed to initialize GLEW" << glewGetErrorString(glewInit()) << std::endl;
system("pause");
return -1;
}
std::cout << "GLEW init" << std::endl;
system("pause");
GLchar* vertexShaderSource = "#version 330 core\n"
"layout (location = 0) in vec3 position;"
"void main()"
"{"
" gl_Position = vec4(position.x, position.y, position.z, 1.0);"
"}";
std::cout << "ShaderCode read" << std::endl;
system("pause");
GLfloat vertices[] = {
-0.5f, -0.5f, 0.0f,
0.5f, -0.5f, 0.0f,
0.0f, 0.5f, 0.0f
};
std::cout << "Vertizes read" << std::endl;
system("pause");
GLuint VBO;
glGenBuffers(1, &VBO);
glBindBuffer(GL_ARRAY_BUFFER, VBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
std::cout << "GL Buffer initialised" << std::endl;
system("pause");
GLuint vertexShader;
vertexShader = glCreateShader(GL_VERTEX_SHADER);
std::cout << "Shaderobj." << std::endl;
system("pause");
glShaderSource(vertexShader, 1, &vertexShaderSource, NULL);
glCompileShader(vertexShader);
std::cout << "Shader´compiled" << std::endl;
system("pause");
GLint success;
GLchar infoLog[512];
glGetShaderiv(vertexShader, GL_COMPILE_STATUS, &success);
if(!success)
{
glGetShaderInfoLog(vertexShader, 512, NULL, infoLog);
std::cout << "ERROR::SHADER::VERTEX::COMPILATION_FAILED\n" << infoLog << std::endl;
}
std::cout << "Shader: success" << std::endl;
system("pause");
return 0;
}
// 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)
glfwSetWindowShouldClose(window, GL_TRUE);
}
