OpenGLWindow.cpp

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#include "Engine/Utility/Defines.hpp"
#include <string>
#ifdef USING_OPENGL
#include "Engine/Window/OpenGLWindow.hpp"
#include "Engine/Renderer/IMGUI/imgui.h"
#include "Engine/Renderer/imgui_impl_glfw_gl3.h"
#include "Engine/Utility/Logging.hpp"
#include <iostream>

namespace Engine
{
    OpenGLWindow::OpenGLWindow(int width, int height, const char* title) noexcept
    {
        glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
        glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
        glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
        glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);

        windowReference = eastl::shared_ptr<Window>(new Window(width, height, title));

        window = windowReference->GetGLFWWindow().lock();
        this->width = windowReference->GetWidth();
        this->displayWidth = windowReference->GetDisplayWidth();
        this->displayHeight = windowReference->GetDisplayHeight();
        this->height = windowReference->GetHeight();
        this->title = windowReference->GetTitle();

        int major = glfwGetWindowAttrib(window.get(), GLFW_CONTEXT_VERSION_MAJOR);
        int minor = glfwGetWindowAttrib(window.get(), GLFW_CONTEXT_VERSION_MINOR);
        int revision = glfwGetWindowAttrib(window.get(), GLFW_CONTEXT_REVISION);
        debug_info("OpenGLWindow", "Constructor", eastl::string(eastl::string("OpenGL Version ") + std::to_string(major).c_str() + "." + std::to_string(minor).c_str() + "." + std::to_string(revision).c_str()));

        glfwMakeContextCurrent(window.get());
        //glfwSwapInterval(1);

        glewExperimental = true; // Required because we use the Core profile (line 15)
        GLenum glewError = glewInit();
        if (glewError != GLEW_OK)
        {
            debug_error("OpenGLWindow", "Constructor", "Failed to initialize OpenGL context");
            return;
        }

        glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
        // Enable depth test
        glEnable(GL_DEPTH_TEST);
        // Accept fragment if it closer to the camera than the former one
        glDepthFunc(GL_LESS);
        // Cull triangles which normal is not towards the camera
        glEnable(GL_CULL_FACE);
    }

    OpenGLWindow::~OpenGLWindow() noexcept
    {
    }
} //namespace Engine
#endif