Compositing

• Alpha compositing
  • Porter-Duff
    • Compositing Digital Images
  • Premultiplied vs separated alpha

\[r = r_0 + (r_1 - r_0) \cdot \alpha_1\]

• Clipping and soft masking
• Maybe affine transformation belongs here?
• Blend modes
  • W3C spec on Compositing and blending

Alpha Compositing is a very in-depth, interactive exposition by the legendary Bartosz Ciechanowski.