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[BUG-226715] [EEP][Mac] Sunlight shines up through the grid at specific angle #5183

Open sl-service-account opened 5 years ago

sl-service-account commented 5 years ago

At one specific angle, when the sun is directly 'behind' the world, it will add extra illumination as though it was shining up through it.

It's rather fiddly to find the exact spot, as there are no numbers to follow, but it appears to be at 180° behind the world. At that point, the sun dot in the environment floater disappears too.

Pictures attached [from FS, but I can repro on LL]. It's subtle, but it's there. It's easier to see it flash when you do it 'live'.

The WL I was working on is meant to have no direct light, only ambient [I'm recreating a series based on the [NB] Alpine-skinlight RGB for colour-matching] so I had the sun set to black & everything down on minimum in that section.

I did notice, as I was trying to isolate exactly which control may be contributing, that if I set a white sun, the entire sky goes white at that point.

Attachments

Original Jira Fields | Field | Value | | ------------- | ------------- | | Issue | BUG-226715 | | Summary | [EEP][Mac] Sunlight shines up through the grid at specific angle | | Type | Bug | | Priority | Unset | | Status | Accepted | | Resolution | Accepted | | Labels | eep, whirly-eep | | Reporter | Norton Burns (norton.burns) | | Created at | 2019-04-07T08:57:31Z | | Updated at | 2020-06-15T15:23:07Z | ``` { 'Build Id': 'unset', 'Business Unit': ['Platform'], 'Date of First Response': '2019-04-09T14:06:00.941-0500', 'ReOpened Count': 0.0, 'Severity': 'Unset', 'System': 'SL Viewer', 'Target Viewer Version': 'viewer-development', 'What just happened?': 'a', 'What were you doing when it happened?': 'b', 'What were you expecting to happen instead?': 'c', } ```
sl-service-account commented 5 years ago

Dan Linden commented at 2019-04-09T19:06:01Z

I'm not able to repro this. Please name the sky setting "BUG-226715" and share it with Dan Linden.

As an aside, you'll need to reduce Cloud Coverage to 0 to make the scene entirely lit by the Ambient Color swatch.

sl-service-account commented 5 years ago

Norton Burns commented at 2019-04-10T08:14:00Z

I'm afraid it won't save at the point the bug is triggered. It gives an asset error

"Unable to upload [UUID] due to the following reason: Internal error from verifier. Please try again"

It does save a file, but that then will not open. I'll send you one I can generate the bug on & the saved, error resultant file, see if that may help.

BTW, I'm compensating for the cloud & sky coverage & colour. I'm aiming to be 'within 1' for R, G & B on an imported colour checker passport image with the numbers stamped on it - so I can give people a bit more interesting skies, without straying too far from 'flat' for their skin tones etc.

sl-service-account commented 5 years ago

Dan Linden commented at 2019-04-11T22:53:52Z

Needs more info.

I'm not able to reproduce this. If you can get it to reproduce again, click the North arrow of the sun until it appears again then save the Sky Setting and share it with me.

sl-service-account commented 5 years ago

Norton Burns commented at 2019-04-12T08:14:36Z

Unfortunately, once it triggers no amount of arrow clicking will bring it back - only dragging the [now invisible] dot.

Tested on FS current nightly & LL  6.2.0.526104 received today.

sl-service-account commented 5 years ago

Whirly Fizzle commented at 2019-04-12T17:50:24Z

I can't reproduce this either. Can you make a video showing it happen?

sl-service-account commented 5 years ago

Norton Burns commented at 2019-04-13T09:02:49Z

Video posted - I managed to hit it in just a couple of seconds rather than my usual 5 minutes of fiddling ;) It does the same with a black sun but it's very very subtle; the white sun blows the sky right out. It seems so far that only Mac users can repro it.

sl-service-account commented 5 years ago

Anastasia Horngold commented at 2019-04-13T19:03:26Z

 I can reproduce this easily and consistently (Mac Mojave) on SLV 6.2.0.526104.

I open Norton's file, wiggle the sun around near the center of the sun image for a while, and find the spot the sky flashes white. 

In addition, once I find that spot by wiggling with sun with the mouse, the arrows stop working.

sl-service-account commented 5 years ago

Whirly Fizzle commented at 2019-04-13T19:18:56Z

I still can't repro this on Windows using Norton's test sky. I suspect it's a Mac only issue.

@Anastasia, if you try to save the sky file when it's in the buggy state, do you also get the "Unable to upload [UUID] due to the following reason: Internal error from verifier. Please try again" error message?

sl-service-account commented 5 years ago

Dan Linden commented at 2019-04-22T21:36:28Z

I was able to repro on a Mac. SecondLife.log has several messages like this around the same time. 2019-04-22T21:31:36Z WARNING #SETTINGS# llinventory/llsettingssky.cpp(1001) LLSettingsBase::calculateHeavenlyBodyPositions : Zero length sun direction. Wailing and gnashing of teeth may follow... or not.

Additionally, and maybe this should be a separate bug, I was dragging the sun around at noon, and then the sun dropped through to midnight. I suspect it has the same root cause.