{"action":"created","issue":{"url":"https://api.github.com/repos/KhronosGroup/glTF/issues/696","repository_url":"https://api.github.com/repos/KhronosGroup/glTF","labels_url":"https://api.github.com/repos/KhronosGroup/glTF/issues/696/labels{/name}","comments_url":"https://api.github.com/repos/KhronosGroup/glTF/issues/696/comments","events_url":"https://api.github.com/repos/KhronosGroup/glTF/issues/696/events","html_url":"https://github.com/KhronosGroup/glTF/issues/696","id":173440504,"number":696,"title":"[PBR extension] Parameter Set","user":{"login":"mlimper","id":1853237,"avatar_url":"https://avatars.githubusercontent.com/u/1853237?v=3","gravatar_id":"","url":"https://api.github.com/users/mlimper","html_url":"https://github.com/mlimper","followers_url":"https://api.github.com/users/mlimper/followers","following_url":"https://api.github.com/users/mlimper/following{/other_user}","gists_url":"https://api.github.com/users/mlimper/gists{/gist_id}","starred_url":"https://api.github.com/users/mlimper/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/mlimper/subscriptions","organizations_url":"https://api.github.com/users/mlimper/orgs","repos_url":"https://api.github.com/users/mlimper/repos","events_url":"https://api.github.com/users/mlimper/events{/privacy}","received_events_url":"https://api.github.com/users/mlimper/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/KhronosGroup/glTF/labels/PBR","name":"PBR","color":"e99695"}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":14,"created_at":"2016-08-26T12:19:46Z","updated_at":"2016-09-26T11:03:55Z","closed_at":null,"body":"Initially, we have proposed two parameter sets: \"Specular-Glossiness\" (short: \"glossiness\") and \"Metallic-Roughness\" (short: \"roughness\"). One the one hand, this allows for more freedom, as assets may be given in one or the other format. On the other hand, it might be better to have only one parameter set, for increased simplicity, ease of implementation and portability.\r\n\r\nIf we agree to use only one parameter set, we will have to decide which one that should be. The roughness model might be popular and easy to use with several existing systems. The glossiness model allows for a bit more freedom, as the proposed specular component has three channels."},"comment":{"url":"https://api.github.com/repos/KhronosGroup/glTF/issues/comments/249540891","html_url":"https://github.com/KhronosGroup/glTF/issues/696#issuecomment-249540891","issue_url":"https://api.github.com/repos/KhronosGroup/glTF/issues/696","id":249540891,"user":{"login":"mlimper","id":1853237,"avatar_url":"https://avatars.githubusercontent.com/u/1853237?v=3","gravatar_id":"","url":"https://api.github.com/users/mlimper","html_url":"https://github.com/mlimper","followers_url":"https://api.github.com/users/mlimper/followers","following_url":"https://api.github.com/users/mlimper/following{/other_user}","gists_url":"https://api.github.com/users/mlimper/gists{/gist_id}","starred_url":"https://api.github.com/users/mlimper/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/mlimper/subscriptions","organizations_url":"https://api.github.com/users/mlimper/orgs","repos_url":"https://api.github.com/users/mlimper/repos","events_url":"https://api.github.com/users/mlimper/events{/privacy}","received_events_url":"https://api.github.com/users/mlimper/received_events","type":"User","site_admin":false},"created_at":"2016-09-26T11:03:55Z","updated_at":"2016-09-26T11:03:55Z","body":"Thanks, very cool! Looks very straightforward."}}
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