Three shades and two uses (cel shading/toon shading) in characters is an art style of non-realistic rendering. This technique creates a flat color on top of the basic color of a 3D object, making the object appear to have a 3D perspective while maintaining a 2D effect. Simply put, the 3D model is modeled in 3D and then rendered into a 2D color block effect.
2D rendering of 3D characters is a common technique in 2D games. The 3D character is first modeled by 3D technology, rendered into a 2D picture, and then the 2D picture is loaded into the game, making the 2D game present a realistic 3D effect.
Therefore, Three shades and two uses is essentially a 2D game, but the process (character model and scene model production) utilizes 3D technology.
What makes Three shades and two uses different from traditional rendering is its non-realistic lighting model. Traditional smooth lighting values are calculated for each pixel to create smooth transitions; however, Three shades and two uses animates shadows and highlights to be displayed as blocks of color rather than in a graded smooth blend, making the 3D model look more flat.
Consoles now have more rendering power than ever before, but a good video game does not necessarily require very realistic graphics, as in the case of some of the most popular games of recent years, such as Animal Crossing, New Horizons, and Fall Guys, and arguably many famous games that consciously or unconsciously avoid realistic graphics, opting instead for flat effects. Three shades and two uses rendering techniques.