{"action":"created","issue":{"url":"https://api.github.com/repos/klauspost/rawspeed/issues/108","labels_url":"https://api.github.com/repos/klauspost/rawspeed/issues/108/labels{/name}","comments_url":"https://api.github.com/repos/klauspost/rawspeed/issues/108/comments","events_url":"https://api.github.com/repos/klauspost/rawspeed/issues/108/events","html_url":"https://github.com/klauspost/rawspeed/issues/108","id":91102885,"number":108,"title":"Incorrect output from the RawImageDataU16::scaleValues SSE code path","user":{"login":"pedrocr","id":246322,"avatar_url":"https://avatars.githubusercontent.com/u/246322?v=3","gravatar_id":"","url":"https://api.github.com/users/pedrocr","html_url":"https://github.com/pedrocr","followers_url":"https://api.github.com/users/pedrocr/followers","following_url":"https://api.github.com/users/pedrocr/following{/other_user}","gists_url":"https://api.github.com/users/pedrocr/gists{/gist_id}","starred_url":"https://api.github.com/users/pedrocr/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/pedrocr/subscriptions","organizations_url":"https://api.github.com/users/pedrocr/orgs","repos_url":"https://api.github.com/users/pedrocr/repos","events_url":"https://api.github.com/users/pedrocr/events{/privacy}","received_events_url":"https://api.github.com/users/pedrocr/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":4,"created_at":"2015-06-25T23:27:38Z","updated_at":"2015-06-27T12:37:21Z","closed_at":null,"body":"While tracking down a difference in output between rawspeed's scaled output and darktable's own scaling I found out RawImageDataU16::scaleValues produces apparently different output between the sse and non-sse code paths. I need to debug this more but this seems to happen even without dithering enabled so it's not just a matter of having different random values."},"comment":{"url":"https://api.github.com/repos/klauspost/rawspeed/issues/comments/116036496","html_url":"https://github.com/klauspost/rawspeed/issues/108#issuecomment-116036496","issue_url":"https://api.github.com/repos/klauspost/rawspeed/issues/108","id":116036496,"user":{"login":"pedrocr","id":246322,"avatar_url":"https://avatars.githubusercontent.com/u/246322?v=3","gravatar_id":"","url":"https://api.github.com/users/pedrocr","html_url":"https://github.com/pedrocr","followers_url":"https://api.github.com/users/pedrocr/followers","following_url":"https://api.github.com/users/pedrocr/following{/other_user}","gists_url":"https://api.github.com/users/pedrocr/gists{/gist_id}","starred_url":"https://api.github.com/users/pedrocr/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/pedrocr/subscriptions","organizations_url":"https://api.github.com/users/pedrocr/orgs","repos_url":"https://api.github.com/users/pedrocr/repos","events_url":"https://api.github.com/users/pedrocr/events{/privacy}","received_events_url":"https://api.github.com/users/pedrocr/received_events","type":"User","site_admin":false},"created_at":"2015-06-27T12:37:21Z","updated_at":"2015-06-27T12:37:21Z","body":"In fact the non-dither non-sse code seems to match the new darktable (sse and non-sse) code just fine even though that one is implemented differently. So I suspect there's indeed a bug in the sse scaling code."}}