[#VWR-149] Corruption of small textures after upload

1. Second Life Viewer - VWR

Corruption of small textures after upload

Created: 23/Feb/07 07:43 PM Updated: 10/Sep/07 03:57 PM

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Component/s:

Graphics

Affects Version/s:

First Look - 1.13.2.57278, 1.18.3 Release Candidate

Fix Version/s:

None

File Attachments:

small texture corruption.zip (776 kB)

Image Attachments:

1. 8x8 RGBYWGGK upload still borked.jpg
(112 kB)

Environment:

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First Look 1.13.3.58185, Windows XP Pro
First Look 1.18.3rc Windows XP Pro

Issue Links:

Relates

This issue Relates to:

~~VWR-2404~~ lossless texture compression on small textures not lossless

Linden Lab Issue ID:

SL-36346

Description

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What is displayed in the preview isn't what you get when you upload.

With 8x8 textures, the colours are altered as is the display.

With 16x16 textures, the colours aren't altered, but the display is (see the red line down the side of the black one).

After downloading the textures:

The 8x8 colours appear to have lower saturation values than originally given.

The 16x16 colours appear identical.

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Comments

Change History

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Penny Patton added a comment - 18/Jul/07 05:21 AM

On a 512x512 texture I tried to upload repeatedly today, I did notice a lot of artifacting and image corruption after the texture had uploaded. The texture will look fine in Photoshop, then completely awful and unusable when uploaded.

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SignpostMarv Martin added a comment - 10/Sep/07 02:36 PM

Updated issue with photo of lossless uploaded version.

Colours are all there, but they're washed out. Hardly lossless :-P

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Rob Linden added a comment - 10/Sep/07 03:04 PM

Comment from internal tracker: "This is an unavoidable artifact of j2c compression."