)]}'
{
  "commit": "3f0c4a56e7b6eaef22cc9f36c90ea2ee4063c587",
  "tree": "b064a979769ac917c0e2b85f86d02ebf50d67683",
  "parents": [
    "80766cfa26566de48142708e1d158ecbf4129cc2"
  ],
  "author": {
    "name": "Jamie Madill",
    "email": "jmadill@chromium.org",
    "time": "Thu Jan 10 10:20:35 2019 -0500"
  },
  "committer": {
    "name": "Commit Bot",
    "email": "commit-bot@chromium.org",
    "time": "Thu Jan 10 19:46:59 2019 +0000"
  },
  "message": "Vulkan: Faster state transitions.\n\nImplements a transition table from Pipeline Cache entry to\nstate change neighbouring Pipeline Cache entries. We use\na 64-bit mask to do a quick scan over the pipeline desc.\nThis ends up being a lot faster than doing a full hash\nand memcmp over the pipeline description.\n\nNote that there could be future optimizations to this design.\nWe might keep a hash map of the pipeline transitions instead\nof a list. Or use a sorted list. This could speed up the search\nwhen there are many transitions for cache entries. Also we could\nskip the transition table and opt to do a full hash when there\nare more than a configurable number of dirty states. This might\nbe a bit faster in some cases. Likely this will be something we\ncan add performance tests for in the future.\n\nDocumentation is also added in a README file for the Vulkan back\nend. This will be extended over time.\n\nImproves performance about 30-35% on the VBO state change test.\n\nBug: angleproject:3013\nChange-Id: I793f9e3efd8887acf00ad60e4ac2502a54c95dee\nReviewed-on: https://chromium-review.googlesource.com/c/1369287\nCommit-Queue: Jamie Madill \u003cjmadill@chromium.org\u003e\nReviewed-by: Yuly Novikov \u003cynovikov@chromium.org\u003e\n",
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