In this article we will continue to implement lighting. We will implement the ambient and specular components of the Phong reflection model, attenuation, and gamma correction.
This is the first article covering lighting. We will begin our lighting adventure by implementing per-pixel, diffuse lighting with a single point light. In later articles we will implement ambient and specular reflection, directional lights, spotlights, attenuation, and using multiple lights.
In this article, we will be refactoring the code to be more like a 3D engine/framework. Specifically, we will be replacing some of the globals with structs that represent “assets” and “instances.” At the end, we will have a single wooden crate asset, and five instances of that asset arranged to spell out “Hi” in 3D.
In this article, we will be consolidating the matrix and camera knowledge from
the previous article into the new tdogl::Camera class, which will be a
first-person shooter type of camera. Then, we will connect the camera to
keyboard and mouse input, so we can move within the 3D scene and look around.
This will involve learning a bit of vector math. We will also learn about
inverting matrices, which was not mentioned in the previous article.
Have you ever wished that tar or zip would deduplicate files when creating
an archive? Well here’s a hacky solution using git.