This is a repository for a C++ OpenGL application I made for my CS 3388 Computer Graphics I class at Western University. It constitutes my work for the sixth assignment.
Ryan Hecht
Professor Brandt
CS 3388 Computer Graphics I
Due Date: 10 April 2023
Created: 6 April 2023
Last Edited: 8 April 2023
Assignment 6
This OpenGL C++ program renders a patch of water from a plane mesh using a shader
program with tessellation and geometry shaders. The program leverages the GLEW
(OpenGL Extension Wrangler Library) to manage OpenGL extensions and the GLM
(OpenGL Mathematics) library for mathematical operations. The rendered water
patch is created by generating a quad grid of vertices, which is then tessellated
and transformed by the shader program.
1. C++ Standard Library
2. OpenGL
3. GLEW (OpenGL Extension Wrangler Library)
4. GLFW (OpenGL Graphics Library Framework)
5. GLM (OpenGL Mathematics)
6. Support for GLSL 4.50.
Note that high step sizes and tessellation levels can cause unexpected
behaviour with the number of vertices generated. Also, the tessellation level
is currently set to 15.0 because a higher level causes instability with my
personal machine. I can run 16.0 only if I increase the step size to 1.2 or more.
You can change the tessellation level to 16.0 by going into the Constants.hpp
and changing it there.
Contains screenshots of the rendered waves
Contains the water.bmp texture and displacement-map1.bmp displacement map used
for rendering the water.
Contains the Phong-like shaders, geoshader, and tesselation shaders used in
the shader program.
Headers.hpp: Central header file including:
Constants.hpp: General constants used throughout the program
CameraControls.hpp: Manages camera controls
Shader.hpp: Shader loading and management functions
LoadBMP.hpp: Loads BMP files
PlaneMesh.hpp: Class definition for the PlaneMesh that is transformed into water
Compile the program using the provided makefile (if using Ubuntu 22.04.2) with the
appropriate libraries on your system. Use your own form of compilation if using an
alternative operating system. Provide command line arguments for the
screen width, screen height, stepsize, xmin, xmax.
For Example: './assign6 1920 1080 1.0 -10 10'
1920 x 1080 pixel window, a step size of 1.0, and with a plane mesh
from -10 to 10 (standard size).
This program uses the standard dev tools from the OpenGL library. It also uses GLEW and GLM.
This program was made on Ubuntu 22.04.2, with an Intel CPU and Nvidia GPU. Please note
there may be compatibility issues with different operating systems and hardware,
particularly Apple Silicone and Intel GPUs. There may also be compatibility issues
with high retina displays.
This program was completed as an assignment for CS 3388 Computer Graphics I at
Western University and uses some files provided by Professor Alexandar Brandt, such
as CamControls.hpp and LoadBMP.hpp.
