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authorKeith Packard <keithp@keithp.com>2008-05-22 23:08:38 -0700
committerKeith Packard <keithp@keithp.com>2008-05-22 23:08:38 -0700
commit8c2b207f9b1fb1cf6df23c7ef73ca57dfb5dd459 (patch)
tree0220aa67cad733f13a2eeac7199d8476e815316c /tests/ttmtest/src
parent44ed693ca6f8d19acb39174c6efada070652a027 (diff)
[intel-gem] Encourage multiple caches to hold read data
When reading from multiple domains, allow each cache to continue to hold data until writes occur somewhere. This is done by first leaving the read_domains alone at bind time (presumably the CPU read cache contains valid data still) and then in set_domain, if no write_domain is specified, the new read domains are simply merged into the existing read domains. A huge comment was added above set_domain to explain how things are expected to work.
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