[#VWR-11688] Oblong Sculpts load slowly

1. Second Life Viewer - VWR

Oblong Sculpts load slowly

Created: 23/Jan/09 11:54 AM Updated: Wednesday 01:39 PM

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Issue 4394 of 15802 issue(s)

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Component/s:

Building (in-world)

Affects Version/s:

1.20, 1.21, 1.22 Release Candidate, 1.22 Public Nightly

Fix Version/s:

None

Issue Links:

Duplicate

This issue duplicates:

~~VWR-8723~~ Degenerate Checking using New Oblong Sculpts Too Strong

Relates

This issue Relates to:

VWR-3798 Sculpt textures not loading for many minutes, APPEAR to have too low a priority in the interest list.

~~VWR-11828~~ Sculpts either load extremely slowly or fail to load altogether.

VWR-5647 Meta-Issue: Sculpted Prims Need More Linden Lab Development

This issue is related to by:

VWR-16054 Implement OblongSculptiesDetails patch from cool viewer (also Emerald viewer) in standard viewer.

Last Triaged:	07/Apr/09 09:16 AM
Linden Lab Issue ID:	DEV-30254

Description

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Oblong sculpts load much more slowly than conventional, 32x32 sculpts. One oblong can take 2-3 minutes to load.

It could be possible that the root cause of this bug is that lossless images of higher jpg2000 file size load much more slowly than expected (IE, a 5kb image loading several times slower than a 4kb one of the same pixel count.)

If need be, a set of test examples of different oblongs and normal sculpts with varying file sizes can be made to establish the root cause of this bug.

For internal reference: Sample object/texture at AssetID 69c4c755-9e64-8e62-b5f5-a420df596957 – Soft

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Comments

Change History

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Dessie Linden added a comment - 11/Feb/09 09:48 AM

Hi Aminom - This issue looks like a duplicate of ~~VWR-8723~~. Please take a look at that issue and, if you agree, please resolve it. Thanks!

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Alexa Linden added a comment - 12/Feb/09 02:51 PM

Dup of ~~VWR-8723~~

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Aminom Marvin added a comment - 12/Feb/09 03:42 PM

This is not a duplicate of ~~VWR-8723~~. ~~VWR-8723~~ does not relate to loading times, but to the displaying of sculpts; the process that checks whether or not a sculpt should be rendered as a sculpt or a "bad sculpt sphere) functions incorrectly or too harshly with oblong sculpts.
This issue deals with the way lossless image data for sculpts is downloaded, and not how they are displayed. The issue is this: lossless sculpt images of a higher file size than others for a given pixel count will load disproportionately slower than they should.
The issue is broader than just oblongs, it's just that oblongs are more strongly affected because they tend to have higher file sizes for a given pixel count because jpg2000 lossless compression is more efficient on square or near-square images.

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Contagious Republic added a comment - 18/Nov/09 01:22 PM

some of my customers complain that 512 high, 8 wide sculpts load slower than 8 high, 512 wide sculpts.

I don't know if it's total nonsense, being millisecond picky, or a real phenomenon. Anyhow I didn't bother trying duplicating it myself.