Filtering mechanism for render target line modification

摘要

Modification messages may be filtered to reduce the load on a message channel between a render cache and a frame buffer compression. A group of cache lines may be checked to see whether both a subspan request hits an unlit bit and a modify message was already sent. If so, the modification message may be filtered.

主权项

1. A method comprising:
processing a group of render target cache line modifications; after processing the group of modifications, determining whether a modification message is unneeded for an instance where a render target cache line was modified; and filtering an unneeded render target line modification message.