NPR & Screen Effects

NPR & Screen EffectsRenguo Feng

Non-photorealistic renderingCartoon rendering can enhance the atmosphere of some types of games when you want to impart a cartoonish feel.

3

Cartoon renderingStep 1. the meshes are shaded using exactly

three shading intensities (bright, medium, dark) and the transition between them is abrupt.

Step 2. Cartoon drawings also typically have their silhouette edges outlined.

Both steps require their own shaders.

Cartoon rendering

DifficultiesTo outline the silhouette edges ， I represent

an edge of a mesh as a quad.

The problems in generating adjacency arrays for some complex models.

quad from an edge

triangle

Screen Special EffectsRender scene to a temporary texture, and

then use a special shader to manipulate the result before presenting onto screen.

Black and White, Old FilmGaussian Filter & Blur & Motion Blur

Shader Development Tool

Black and White, Old Time Movie

Blur & Sharpen

Distortion(heat haze effect)

Progress & Difficulties & Future WorkPart of codes for post processes

Many shaders, test variables

DOF, Motion Blur ……