In this section, we'll be looking at basics of lighting because so far, if you look at the results from our previous section, which just discussed colors, what we've got is the cube and the light source. At the moment, the entire color in the cube output just looks uniform. It almost doesn't look like a cube, a six-sided shape figure, and the lighting doesn't look very realistic too. Because realistically, in our example, the light source doesn't emit light onto our cube and there is no effect of light and shadow on the cube. So, in this section we'll discuss the basics of lighting and effect on the cube. We'll focus on improving the lighting system so we can have a more realistic effect.
So, let's get started. As usual, we'll begin making modifications to our shader files.
