@agatestudio

DirectX 11 Tessellation

Zoel

Knight

Agate Studio

@agatestudio

SUBDIVISION SURFACE INTRODUCTION

Introduced to the big screen by Pixar with A Bug's Life, Finding Nemo and The IncrediblesAdd extra detail for computer-generated characters in live-action moviesGollum from the recent Lord of the Rings movies is probably the most striking example

Subdivision Surface Example

• Dividing each polygonal face into smaller faces

Subdivision Surface Disadvantage

• Model are over smoothed

• Other object always smoothed

What

• Manage datasets of polygons presenting objects in a scene and divide them into suitable structures for rendering

When?

• Depending on what is needed

Where?

• Sea

• Terrain

• Etc

Why?

• Improve Display Effect

• Improve Gameplay (design)

How (Before)

How (After)

How

Before After

Disadvantages

• Too much geometry causes the GPU to become vertex-transform or triangle-setup limited

• Worse, having many tiny triangles that are just a few pixels in size can significantly reduce rasterizer efficiency

Thanks!!! The End