Where to get started with HLSL shader DEV

kenneth • that lizard horror dev on Instagram: "I did some shader work with HLSL to make an alpha clipping stencil that masks out a circle on walls between the lizard and the camera with halftone dither edges. Still needs work on some edge cases but I think it’s better than materials randomly popping translucent and opaque back and forth #gamedev #gamedevelopment #indiegame #gamer #game"