[BUG-232578] PBR: Spotlight specular reflection ignores material roughness

[sl-service-account]

What just happened?

Side-by-side test of point vs spot lights on a PBR material. Point light has correct specular reflection, however spot would seem to be ignoring roughness. See attached image (Point light on left, spot on right).

What were you doing when it happened?

Testing the PBR viewer.

What were you expecting to happen instead?

Spotlight specular reflection should roughly match the point light (seen on the left).

Other information

Attachments

• pointvsspot.png 2022-09-02 11:32:59

Original Jira Fields

| Field | Value | | ------------- | ------------- | | Issue | BUG-232578 | | Summary | PBR: Spotlight specular reflection ignores material roughness | | Type | Bug | | Priority | Unset | | Status | Accepted | | Resolution | Triaged | | Labels | pbr | | Created at | 2022-09-02T15:33:21Z | | Updated at | 2022-11-17T20:29:45Z | ``` { 'Build Id': 'unset', 'Business Unit': ['Platform'], 'Date of First Response': '2022-09-02T10:58:08.113-0500', 'ReOpened Count': 0.0, 'Severity': 'Unset', 'System': 'SL Viewer', 'Target Viewer Version': 'viewer-development', 'What just happened?': 'Side-by-side test of point vs spot lights on a PBR material. Point light has correct specular reflection, however spot would seem to be ignoring roughness. See attached image (Point light on left, spot on right).', 'What were you doing when it happened?': 'Testing the PBR viewer.', 'What were you expecting to happen instead?': 'Spotlight specular reflection should roughly match the point light (seen on the left).', } ```

[sl-service-account]

JIRAUSER341268 commented at 2022-09-02T15:58:08Z

Thanks Jenna!

[sl-service-account]

1hannah.actor commented at 2022-09-02T19:18:17Z, updated at 2022-09-02T20:49:12Z

Edit: Whenever I say reflection, I actually mean specular highlight. My brain is having a good day today.