Fission now carries backdrop-filter operations through Core IR and can execute them in the software and static-site renderers, but the Vello renderer currently preserves the operation without applying a framebuffer backdrop blur.
Please investigate the smallest correct Vello integration for rounded, clipped backdrop filters, including render-pass ordering, offscreen framebuffer capture, blur bounds, clipping, and performance implications. The implementation must preserve correct compositing and degrade predictably when the capability is unavailable.
This is intentionally separate from the design-fidelity primitives work tracked in #136.
Fission now carries backdrop-filter operations through Core IR and can execute them in the software and static-site renderers, but the Vello renderer currently preserves the operation without applying a framebuffer backdrop blur.
Please investigate the smallest correct Vello integration for rounded, clipped backdrop filters, including render-pass ordering, offscreen framebuffer capture, blur bounds, clipping, and performance implications. The implementation must preserve correct compositing and degrade predictably when the capability is unavailable.
This is intentionally separate from the design-fidelity primitives work tracked in #136.