Experiments with Doom-style rendering in C

Features multi-threaded rendering, specular highlights, fog, and different colored materials.

This is a pretty barebones impementation. It utilizes OpenGL for rendering a textured quad; all rendering is done to an array which is then streamed to the texture.

*(I haven't looked into it yet, but on Ubuntu the mouse is waaay too fast)

This project uses CMake. You can use your preferred build system for building.

OpenGL, GLEW, and SDL2 are required to build this project.

Run the following command to install the required dependencies.

sudo apt install cmake libglew libglew-dev libsdl2-2.0-0 libsdl2-dev libglu1-mesa-dev freeglut3-dev mesa-common-dev

From the root of lesser-doom run:

mkdir build && cd build 

This project required some modern features of C. Before running CMake, it may be required to point CMake to your modern compiler, otherwise it may find a C89 compiler like it was on my machine. If this is the case, make sure to set the environment variable for CMake to find the correct compiler; this will only need to be done once (or anytime you delete your CMakeCache.txt).

export CC=/usr/bin/gcc

now run CMake and then build:

cmake .. && cmake --build .

There is a chance the program says something like

"SDL: OpenGL context could not be created!"

In this case, that version of OpenGL is probably not supported on your machine; you can instead use software rendering by running the program with an additional environment variable:

LIBGL_ALWAYS_SOFTWARE=1 ./lesser-doom