billclock / emerald-engine

3D graphics engine using OpenGL

Emerald Engine

3D graphics engine written in C++ using OpenGL. This project was first created as part of a course in computer graphics at Linköping University. Grass, shadows, bloom and more was added in a later course.

Many parts of this project have been based on tutorials and examples found online, learnopengl.com in particular has been a good source of inspiration. The grass was inspired by this blog post.

Project members:

• Hans-Filip Elo
• Lage Ragnarsson
• Isak Wiberg

A video showcasing the procedural grass: https://www.youtube.com/watch?v=xNea72F_aws

An older video: https://www.youtube.com/watch?v=Tt9o01yyQiw

FEATURES

• Deferred shading
• Screen Space Ambient Occlusion
• Shadow maps
• Procedural grass with LOD
• Grass animation based on wind and collisions
• Bloom
• Scene loader
• Terrain generation
• Catmull-Rom splines for object and camera animation
• Frustum culling for meshes and lights
• Normal- and specular maps
• Shader precompiler
• Day-night cycle
• Switch between different rendering paths during runtime:
  1. Forward
  2. Deferred
  3. Positions
  4. Normals
  5. Albedo
  6. Specular intensity
  7. SSAO buffer
  8. Shadow map
• Keyboard and mouse control
• Bounding sphere generation and visualization
• Normal vector visualization
• Light sources attached to models

INSTALLATION

Debian / Ubuntu

Install dependencies with apt-get:

sudo apt-get install build-essential libgl1-mesa-dev libsdl2-dev libglew-dev libglm-dev libsdl2-image-dev libassimp-dev

Go to the AntTweakBar download page and download the zip file. Extract the folder and move inside its src/ folder. Run make. Move the contents of /include to /usr/local/include and the contents of lib to /usr/local/lib. run

sudo ldconfig

Run make

MAC OS X

Install dependencies with brew:

brew install glm assimp sdl2 sdl2_image anttweakbar

Run make