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NPR & Screen Effects. Renguo Feng. Non-photorealistic rendering. C artoon rendering can enhance the atmosphere of some types of games when you want to impart a cartoonish feel. Cartoon rendering. - PowerPoint PPT Presentation
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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 ……