Init.h

#pragma once
#include <GL/glew.h>
#include <GLFW/glfw3.h>

#include <stdio.h>


int endProgram(std::string message) {
    std::cout << message << std::endl;
    glfwTerminate();
    return -1;
}


GLFWwindow* initGLFW() {
    glfwInit();
    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);

    GLFWmonitor* primaryMonitor = glfwGetPrimaryMonitor();
    auto mode = glfwGetVideoMode(primaryMonitor);

    glfwWindowHint(GLFW_RED_BITS, mode->redBits);
    glfwWindowHint(GLFW_GREEN_BITS, mode->greenBits);
    glfwWindowHint(GLFW_BLUE_BITS, mode->blueBits);
    glfwWindowHint(GLFW_REFRESH_RATE, mode->refreshRate);

    GLFWwindow* window = glfwCreateWindow(mode->width, mode->height, "Controller Visualizer", primaryMonitor, NULL);
    if (window == NULL) {
        endProgram("Failed to create window");
        return NULL;
    }
    glfwMakeContextCurrent(window);
    return window;
}


GLuint sceneFBO, sceneColorTex;

void CreateSceneFramebuffer(int width, int height)
{
    glGenFramebuffers(1, &sceneFBO);
    glBindFramebuffer(GL_FRAMEBUFFER, sceneFBO);

    // ----- Color texture -----
    glGenTextures(1, &sceneColorTex);
    glBindTexture(GL_TEXTURE_2D, sceneColorTex);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height,
        0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
        GL_TEXTURE_2D, sceneColorTex, 0);


    // Check
    if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
        printf("Framebuffer is not complete!\n");

    glBindFramebuffer(GL_FRAMEBUFFER, 0);
}