The project in this repo shows how to setup a SDL 2 window that uses OpenGL 2.0+ with shaders. A basic 2D sprite and 3D cube should be rendered to the screen when the program is run. A basic game loop is implemented as an example, but can be removed if not desired.
This is also the same project used during my GLSL presentation.
All libraries and headers that are required are included for ease of use so that they do not need to be found individually. If you are running this on Linux, the libraries might need to be found or recompiled for compatibility reasons.
What it should look like
OpenGL 2.0 or greater is required to run.
Windows
To compile on windows, run the project with Visual Studio 2010 or greater and build it.
Linux
To compile (starting in the root project directory)
cd src
make
To run (starting in the root project directory)
cd src/Build/
./SDL2Example
If you get errors while building or running on linux, check the error section below.
- Image Loading (using SOIL)
- Orthographic Projection
- Perspective Projection
- 2D Sprite
- 3D Cube
- Matrix Transforms (Using GLM)
- Basic Game Loop
- Basic Keyboard and Mouse wrappers
SDL 2
http://www.libsdl.org/
Used for
- GUI's
- Threads
- Timing
GLEW
http://glew.sourceforge.net/
Used to access newer OpenGL functions
GLM
http://glm.g-truc.net/0.9.5/index.html
Used for matrix math
SOIL
http://www.lonesock.net/soil.html
Used to load texture files
You will need to get the OpenGL headers if you are compiling the code on linux. You can either look for there here..
http://www.opengl.org/registry/
http://www.khronos.org/registry/
or run these commands. The freeglut library might not be nessesary.
sudo apt-get update
sudo apt-get install libglu1-mesa-dev freeglut3-dev mesa-common-dev
Error: OpenGL headers cannot be found
If you are getting OpenGL errors, run the following commands
sudo apt-get update
sudo apt-get install libglu1-mesa-dev freeglut3-dev mesa-common-dev
Error: ./2DLight: error while loading shared libraries: libSDL2-2.0.so.0: cannot open shared object file: No such file or directory
Open the file
/etc/ld.so.conf
Add the following line the the bottom
include /usr/local/lib
Then run the following command
sudo /sbin/ldconfig
SDL2, GLEW, and SOIL are required to compile. If you do not have any of these libraries, follow the instructions below to install them.
SDL 2
Download SDL2-2.0.3.tar.gz from here http://www.libsdl.org/download-2.0.php
Then run the following commands
tar -zxvf SDL2-2.0.3.tar.gz
cd SDL-1.2.7
./configure
make
sudo make install
GLEW
Download glew-1.10.0.tgz from here http://glew.sourceforge.net/
Then run the following commands
tar -zxvf glew-1.10.0.tgz
cd glew-1.10.0
make
sudo make install
If you get errors about -lXmu and -lXi not being found when trying to install this package, then do the following.
sudo apt-get install libxmu-dev
sudo apt-get install libxi-dev
SOIL
Download soil.zip from here http://www.lonesock.net/soil.html
Then run the following commands
unzip soil.zip
cd Simple\ OpenGL\ Image\ Library/projects/makefile/
mkdir obj
make
sudo make install