Alpha Clipping (Alpha clipping / cutout) is a technical term that is extremely important in the rendering and optimization of game graphics (technical art). In a shader, a technology that immediately ``discards'' pixels whose texture alpha value (transparency) is below a certain threshold value at the GPU judgment stage and cuts the drawing.
Real-world analogy: The process of cutting off unnecessary parts of a sticker with a complicated pattern, like cutting out a cookie cutter
Alpha clipping is a method in which when pasting a sticker with a wire mesh pattern, the white part between the gaps in the mesh is cut out with a utility knife to make a complete hole. It doesn't "slightly see through" like translucent blend, but it completely removes pixels with a choice of "with or without (0 or 1)". Since nothing is drawn in the hollowed out parts, leaves and nets can be expressed in an ultra-lightweight manner while retaining 100% of the ultra-fast drawing benefits of opaque objects.
Illustration: Alpha Clipping (Alpha Clipping / An infographic that clearly illustrates the basic processing flow and mechanism of Cutout) in Japanese.
Detailed mechanism and operating principle
Set the material's drawing mode to "Opaque", enable "Alpha Clipping", and set a threshold (e.g. 0.5) to force only transparent pixels to be non-rendered (cut out).