therselman / SimpleGraphicsLibrary

A simple library for learning and experimenting with Graphics APIs

Simple Graphics Library (SGL)

A simple library for learning and experimenting with Graphics APIs, written in C++. For now, supports only OpenGL 4.5.

Features:

• Abstractions of OpenGL objects for use under the RAII concept:
  • Shader, VertexBuffer, IndexBuffer, Texture2D, CubeMapTexture, etc
• Window abstraction using GLFW3
• Application base class for quick and clean prototyping
• Logging abstraction
• ImGui integration into Application base class

Used Libraries:

• window abstraction: GLFW3
• OpenGL headers: GLAD
• logging library: SPDLOG
• math library: GLM
• gui library: ImGui
• image loading library: STB

How to Use

See examples/ directory.

Use '--recursive' when cloning.

Style used: Google C++ Style

Example of an app that uses Application as a base class:

#define SGL_USE_IMGUI
#include <SGL/SGL.h>
Class HelloTriangle : public sgl::Application
{
...
protected:
    virtual void Start() override {
        m_Window->SetWindowSizeCallback(HelloTriangle::OnResize);
    }
    virtual void Update(float dt) override;
    virtual void Render() override {
        glClear(GL_COLOR_BUFFER_BIT);
        ...
    }
    virtual void OnImGuiRender() override {
        ImGui::ShowDemoWindow(&mybool);
    }
...
}

License

Distributed under MIT License Copyright (c) 2022 authors

Release Notes

version 0.2

• Texture support:
  • image loading
  • Texture2D abstraction
• IndexBuffer abstraction
• TexturedQuad example
• code readability updates
• fixes to make the SGL usable as a library, not just a standalone project
• support for loading binary and text files
• ImGui integration, Application base class updates
• CubeMapTexture abstraction

Version 0.1

• Window abstraction using GLFW
• GL function loading using GLAD
• Logging abstraction using SPDLOG, along with custom asserts
• Added GLM as math library
• VertexBuffer abstraction
• VertexArray abstraction
• Shaders abstraction
• Examples:
  • HelloTriangle
  • VertexBuffers
• other core modules:
  • Timer, Timestep
• Application base class