Composite

Additional "vendor options" properties for Color compositing and color blending:

Property	Required?	Description	Default value
x-composite	No	Allows for both alpha compositing and color blending options between symbolizers.	N/A
x-composite-base	No	Allows the rendering engine to use the symbolizer mapping to define a "base" buffer for subsequent compositing and blending using x-composite. See the section on Feature Styles for more details.	false