[#VWR-27] Prim textures overlap strangely when transparent textures applied

1. Second Life Viewer - VWR

Prim textures overlap strangely when transparent textures applied

Created: 13/Jan/07 06:52 AM Updated: Tuesday 06:11 PM

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Component/s:

Graphics

Affects Version/s:

1.13.1.5, 1.20, 1.18.3 Release Candidate, 1.18.0, 1.18.1.2, 1.18.2.0, 1.18.3.5, 1.18.4 Release Candidate, 1.18.5.3, 1.19.0 Release Candidate, 1.19.0.5, 1.19.1.4, 1.21

Fix Version/s:

None

File Attachments:

2007_11_03_002.bmp (2.25 MB)
2.

AlphaMapVideo.swf (1.38 MB)
3.

BugSnap_001.bmp (5.49 MB)

Image Attachments:

1. 3 sculptie-O-matic robots - transparancy bug.jpg (48 kB)	2. 4textures.png (280 kB)	3. Issue - Transparency-render-1.jpg (311 kB)
4. Issue - Transparency-render-2.jpg (393 kB)	5. screenshot-1.jpg (242 kB)	6. screenshot-2.jpg (29 kB)
7. Skirt + Door = pants.jpg (366 kB)	8. Snapshot1_001.jpg (267 kB)	9. Snapshot1_002.jpg (180 kB)
10. Snapshot1_003.jpg (175 kB)	11. Snapshot_003.png (2.26 MB)	12. transparency-rendering-bug.jpg (111 kB)
13. Z-Order bug example - view from dining room.jpg (530 kB)

Issue Links:

Duplicate

This issue is original of duplicate:

VWR-9941 There is something terribly wrong with my hair ... mad barber has attacked my head.

~~VWR-16103~~ Both the SL standard viewer and "Emerald" viewer exhibit texture "bleed-through" when viewing the Hippo v1.02 published book at different angles, some times returning back to the correct page when camming around the book.

~~VWR-824~~ Transparent and semi-transparent textures do not render properly.

~~VWR-6596~~ Transparent Alpha Textures displayed in front instead of behind others

~~VWR-9712~~ Texture bug on moving prim

~~VWR-12666~~ Everything Showing Through Solid Alpha - NOT JUST GLOW EFFECTS.

~~VWR-716~~ Particles -> Inappropriate Alpha Sorting - as of 1.15.x

~~VWR-455~~ Object renders partially transparent depending on view

~~VWR-4391~~ Secondlife Viewer does not correctly draw semi-transparent prims infront of background objects.

~~VWR-5783~~ Perspective is Escherian: the tree is in the planter inside the house, but the windows behind it appear to be in front of it.

~~VWR-8874~~ Alpha textures on alpha textures turn invisible

~~SNOW-172~~ View of objects png objects

~~VWR-12033~~ Non-Windlight Fog and alpha textures on 1.22

Relates

This issue Relates to:

VWR-6713 Allow Alpha Channel of Textures to be used as a 1-bit Mask (Alpha Masking)

This issue is related to by:

VWR-203 rendering of intersecting objects is wrong, and hidden surfaces are not hidden at all, resulting in an Esher-like drawing

VWR-13305 flickering alpha windows and trees

VWR-504 Alpha-sort behavior of prims in attachments is incorrect.

~~VWR-824~~ Transparent and semi-transparent textures do not render properly.

~~VWR-505~~ Alpha-sorting of prims reversed, causing 'solid, non-alpha' prims to disappear.

~~VWR-737~~ Alpha Sorting worse in 1.15.1(3) -- Transparent object 15m apart got wrongly sorted

Last Triaged:	14/Aug/08 06:48 PM
Linden Lab Issue ID:	SL-35044

Description

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Simple example:

1. Create a flat cube prim.

2. Shift+drag a duplicate of this prim. Control+Z to center it with previous prim.

3. Rotate the new prim 90-degrees. Thus, creating a crossed (X-shaped) flat prim design. Typical design for creating basic trees, plants, etc.

4. Apply a full transparent texture onto both prims.

5. Select the front and back sides of each prim and apply a texture that is both opaque and transparent. Like a large leaf for example with transparent edges.

6. Rotate the camera around the creation and notice how the texture of one prim overlaps the texture of another prim in a undesirable way.

All

Comments

Change History

Sort Order:

Rob Linden made changes - 12/Feb/07 06:52 PM

Field	Original Value	New Value
Summary	Alpha Depth Sorting	Prim textures overlap strangely when transparent textures applied

Second Life Admin made changes - 12/Feb/07 06:53 PM

Linden Lab Issue ID

SL-35044

Simon Nolan made changes - 24/May/07 08:55 PM

Link

This issue is duplicated by ~~VWR-455~~ [ ~~VWR-455~~ ]

Simon Nolan made changes - 24/May/07 09:05 PM

Link

This issue is related to by VWR-504 [ VWR-504 ]

Simon Nolan made changes - 24/May/07 09:06 PM

Link

This issue is related to by VWR-203 [ VWR-203 ]

Simon Nolan made changes - 24/May/07 09:07 PM

Link

This issue is related to by ~~VWR-824~~ [ ~~VWR-824~~ ]

Daedalus Young made changes - 16/Jul/07 08:00 AM

Link

This issue is related to by ~~VWR-505~~ [ ~~VWR-505~~ ]

Soft Linden made changes - 16/Jul/07 03:21 PM

Link

This issue is duplicated by ~~VWR-824~~ [ ~~VWR-824~~ ]

beq janus made changes - 19/Jul/07 12:04 PM

Priority

Normal [ 4 ]

Major [ 3 ]

beq janus made changes - 19/Jul/07 12:18 PM

Attachment

Z-Order bug example - view from dining room.jpg [ 11272 ]

Metal Wombat made changes - 05/Aug/07 10:34 PM

Attachment

transparency-rendering-bug.jpg [ 11460 ]

Ayam Merlin made changes - 27/Aug/07 10:21 AM

Attachment

Issue - Transparency-render-1.jpg [ 11705 ]

Ayam Merlin made changes - 27/Aug/07 10:23 AM

Attachment

Issue - Transparency-render-2.jpg [ 11706 ]

Kevin Susenko made changes - 13/Sep/07 02:45 AM

Affects Version/s

1.18.3 Release Candidate [ 10140 ]

Shoshana Epsilon made changes - 13/Sep/07 03:12 PM

Attachment

BugSnap_001.bmp [ 11922 ]

Patrice Fierrens made changes - 27/Sep/07 03:33 PM

Attachment

screenshot-1.jpg [ 12113 ]

beq janus made changes - 19/Oct/07 05:16 PM

Affects Version/s		1.18.3.5 [ 10160 ]
Affects Version/s		1.18.2.0 [ 10130 ]
Affects Version/s		1.18.0 [ 10101 ]
Affects Version/s		1.18.1.2 [ 10120 ]
Affects Version/s		1.18.4 Release Candidate [ 10180 ]

Joshua Philgarlic made changes - 03/Nov/07 04:16 PM

Attachment

2007_11_03_002.bmp [ 12605 ]

Joshua Philgarlic made changes - 03/Nov/07 04:21 PM

Attachment

screenshot-2.jpg [ 12606 ]

Cuddly Fuhr made changes - 09/Nov/07 06:37 AM

Affects Version/s

1.18.4.3 [ 10190 ]

Rob Linden made changes - 22/Dec/07 01:04 AM

Workflow

jira [ 10064 ]

jira-2007-12-21 [ 20801 ]

Rob Linden made changes - 22/Dec/07 01:18 AM

Workflow

jira [ 20801 ]

jira-2007-12-21 [ 21575 ]

Rob Linden made changes - 22/Dec/07 02:52 PM

Workflow

jira-2007-12-21 [ 21575 ]

jira-2007-12-22 [ 29986 ]

Rob Linden made changes - 22/Dec/07 03:08 PM

Workflow

jira-2007-12-21 [ 29986 ]

jira-2007-12-22 [ 31024 ]

Rob Linden made changes - 22/Dec/07 07:53 PM

Workflow

jira-2007-12-22 [ 31024 ]

jira-2007-12-22a [ 36881 ]

Rob Linden made changes - 22/Dec/07 08:09 PM

Workflow

jira-2007-12-22 [ 36881 ]

jira-2007-12-22a [ 37611 ]

Rob Linden made changes - 22/Dec/07 09:08 PM

Workflow

jira-2007-12-22 [ 37611 ]

jira-2007-12-22a [ 40793 ]

Rob Linden made changes - 22/Dec/07 09:24 PM

Workflow

jira-2007-12-22 [ 40793 ]

jira-2007-12-22a [ 41476 ]

Moon Fargis made changes - 27/Dec/07 04:14 AM

Attachment

Snapshot1_001.jpg [ 13995 ]

Moon Fargis made changes - 27/Dec/07 04:17 AM

Attachment

Snapshot1_002.jpg [ 13996 ]

Moon Fargis made changes - 27/Dec/07 04:20 AM

Attachment

Snapshot1_003.jpg [ 13997 ]

Azziej Enzo made changes - 13/Jan/08 02:32 PM

Affects Version/s		1.18.5.3 [ 10210 ]
Affects Version/s	1.18.4.3 [ 10190 ]

Harleen Gretzky made changes - 26/Jan/08 11:09 AM

Link

This issue is duplicated by ~~VWR-4391~~ [ ~~VWR-4391~~ ]

Naoki Ninetails made changes - 29/Jan/08 09:46 AM

Attachment

Skirt + Door = pants.jpg [ 14475 ]

beq janus made changes - 10/Feb/08 08:34 AM

Affects Version/s		First Look: WindLight [ 10080 ]
Affects Version/s		1.19.0 Release Candidate [ 10251 ]

Torley Linden made changes - 12/Feb/08 08:58 AM

Affects Version/s

First Look: WindLight [ 10080 ]

Vladislav Petrov made changes - 13/Mar/08 04:48 PM

Affects Version/s

1.19.0.5 [ 10260 ]

Lex Neva made changes - 22/Mar/08 09:47 AM

Link

This issue is duplicated by ~~VWR-5783~~ [ ~~VWR-5783~~ ]

Harleen Gretzky made changes - 16/Apr/08 06:14 AM

Link

This issue is duplicated by ~~VWR-6596~~ [ ~~VWR-6596~~ ]

Tofu Linden made changes - 29/Apr/08 03:20 AM

Link

This issue Relates to VWR-6713 [ VWR-6713 ]

nya Linden made changes - 13/Jun/08 12:58 PM

Priority

Major [ 3 ]

Nice to have [ 6 ]

Christophe003 Carter made changes - 09/Aug/08 09:30 AM

Affects Version/s		1.19.1.4 [ 10290 ]
Affects Version/s		1.20 [ 10350 ]
Priority	Nice to have [ 6 ]	Normal [ 4 ]

Nanduka Balogh made changes - 14/Aug/08 10:49 AM

Status	Open [ 1 ]	Resolved [ 5 ]
Last Triaged		14/Aug/08 06:48 PM
Resolution		Contact Support [ 7 ]

Coyote Pace made changes - 14/Aug/08 10:57 AM

Resolution	Contact Support [ 7 ]
Status	Resolved [ 5 ]	Reopened [ 4 ]

Contagious Republic made changes - 28/Aug/08 02:14 AM

Attachment

3 sculptie-O-matic robots - transparancy bug.jpg [ 18375 ]

Gellan Glenelg made changes - 30/Aug/08 02:05 AM

Link

This issue is duplicated by ~~VWR-8874~~ [ ~~VWR-8874~~ ]

aaron23 decuir made changes - 29/Sep/08 11:44 AM

Attachment

Snapshot_003.png [ 19153 ]

Harleen Gretzky made changes - 12/Oct/08 09:08 AM

Link

This issue is original of duplicate ~~VWR-9712~~ [ ~~VWR-9712~~ ]

Ilyara Tardis made changes - 22/Oct/08 04:27 AM

Attachment

AlphaMapVideo.swf [ 19753 ]

Ziah Zhangsun made changes - 27/Oct/08 03:06 PM

Affects Version/s		1.21 [ 10370 ]
Affects Version/s	1.20 [ 10350 ]

Ziah Zhangsun made changes - 27/Oct/08 03:07 PM

Affects Version/s

1.20 [ 10350 ]

Geneko Nemeth made changes - 29/Oct/08 09:13 PM

Link

This issue is original of duplicate VWR-9941 [ VWR-9941 ]

Holly Klaxon made changes - 30/Oct/08 12:30 PM

Comment

[ I get the same effects as those pictured in the photos when using nearly any .tga texture file, not only those that have obviously transparent areas. The interior walls of my store, for example, did not have any windows, yet textures/objects beyond the other, exterior side of the wall still bled through.

Changing the file format of the interior texture to jpeg solved the problem, but that sort of solution is not always possible. I've spent over a month building a space ship in which particle effects added tremendously to atmosphere, but only when viewed from an angle where a jpeg textured prim was behind the particles. In front of the .tga textured hull wall, due to the portholes, the particles are completely invisible. I've now removed most of the particle effects from the ship, lest the buyer think the build itself is flawed.

Those are just a couple of issues from a very long list that I've experienced personally. This bug is a serious pain to anyone who builds on SL, and it detracts greatly from the visual experience for everyone. I hope to see it resolved very soon.

]

Holly Klaxon made changes - 30/Oct/08 12:31 PM

Comment

[ Daedalus, you didn't actually read my comment, did you? I mentioned not once, but twice,that the issue does not occur when using .jpeg. I'm also familiar with graphic programs and files, and I know why .jpeg files don't exhibit the same issues.

I wanted to file a bug report because I believe it needs to be fixed. I honestly do not care what causes it, because regardless of whether it's alpha channels, evil squirrels, bad karma, or whatever... it doesn't matter. The result is what counts.

This issue may not be limited to SL either, but the reason myself and others are commenting here is that we use SL, and we're really not too concerned about what happens with other OpenGL apps. There is some sort of fix possible on SL as long as people don't pigeon hole their thoughts into "it's impossible" mode and instead search for a solution. As familiar as you seem to be with the issue, perhaps if you get out of "it's impossbile" mode and begin searching for a fix, you'll be the one to find it.

]

Sue Linden made changes - 13/Nov/08 11:08 AM

Workflow

jira-2007-12-22a [ 41476 ]

jira-2008-11-14 [ 64732 ]

Sue Linden made changes - 13/Nov/08 11:30 AM

Workflow

jira-2007-12-22a [ 64732 ]

jira-2008-11-14 [ 72682 ]

Sue Linden made changes - 13/Nov/08 05:01 PM

Workflow

jira-2008-11-14 [ 72682 ]

jira-2008-11-14a [ 97416 ]

Sue Linden made changes - 13/Nov/08 05:15 PM

Workflow

jira-2008-11-14 [ 97416 ]

jira-2008-11-14a [ 102973 ]

Sue Linden made changes - 13/Nov/08 05:25 PM

Workflow

jira-2008-11-14 [ 102973 ]

jira-2008-11-14a [ 106628 ]

Sue Linden made changes - 13/Nov/08 05:40 PM

Workflow

jira-2008-11-14 [ 106628 ]

jira-2008-11-14a [ 111961 ]

Sue Linden made changes - 13/Nov/08 06:09 PM

Workflow

jira-2008-11-14 [ 111961 ]

jira-2008-11-14a [ 122620 ]

Sue Linden made changes - 13/Nov/08 06:36 PM

Workflow

jira-2008-11-14 [ 122620 ]

jira-2008-11-14a [ 132596 ]

Sue Linden made changes - 13/Nov/08 06:55 PM

Workflow

jira-2008-11-14 [ 132596 ]

jira-2008-11-14a [ 139859 ]

Bernhard Lytton made changes - 01/Dec/08 12:38 PM

Priority

Normal [ 4 ]

Major [ 3 ]

meni kaiousei made changes - 25/Dec/08 01:56 PM

Link

This issue is related to by ~~VWR-737~~ [ ~~VWR-737~~ ]

BigPapi Linden made changes - 18/Feb/09 01:34 PM

Status	Reopened [ 4 ]	Closed [ 6 ]
Resolution		Expected Behavior [ 9 ]

Contagious Republic made changes - 05/Mar/09 08:10 PM

Resolution	Expected Behavior [ 9 ]
Status	Closed [ 6 ]	Reopened [ 4 ]

BigPapi Linden made changes - 06/Mar/09 08:29 AM

Status	Reopened [ 4 ]	Resolved [ 5 ]
Resolution		Expected Behavior [ 9 ]

Harleen Gretzky made changes - 01/Apr/09 02:07 PM

Link

This issue is original of duplicate ~~VWR-12666~~ [ ~~VWR-12666~~ ]

Alexa Linden made changes - 02/Apr/09 10:18 AM

Link

This issue is original of duplicate ~~VWR-12033~~ [ ~~VWR-12033~~ ]

bau ur made changes - 21/Apr/09 08:45 AM

Resolution	Expected Behavior [ 9 ]
Status	Resolved [ 5 ]	Reopened [ 4 ]

Aeron Kohime made changes - 21/Apr/09 09:57 AM

Status	Reopened [ 4 ]	Resolved [ 5 ]
Resolution		Expected Behavior [ 9 ]

Ellla McMahon made changes - 08/May/09 11:45 AM

Link

This issue is related to by VWR-13305 [ VWR-13305 ]

Harleen Gretzky made changes - 05/Aug/09 04:55 PM

Link

This issue is original of duplicate ~~SNOW-172~~ [ ~~SNOW-172~~ ]

Alexa Linden made changes - 31/Aug/09 03:31 PM

Link

This issue is original of duplicate ~~VWR-716~~ [ ~~VWR-716~~ ]

Yichard Muni made changes - 24/Sep/09 07:34 AM

Attachment

4textures.png [ 29421 ]

Yichard Muni made changes - 01/Oct/09 01:20 AM

Comment

[ Here is an example of 4 superimposed full alpha textures, with no muddling (see the image "4textures" at the top of the page).

The example purposely uses small textures, which show the white edge of each.
The first full alpha texture is the folliage
The second full alpha texture is the brick wall, with a window opening
The third full alpha texture is the white curtain
The fourth full alpha texture is inner green wall, with a second window showing the landscape behind all the four full alpha textures.
Full alpha means that we can have all the degrees of transparency, not just one transparent colour.

This clearly shows that it is possible to avoid the ugly antic bug of texture muddling, without major changes to the browser. The tip is simple, and I knew it even before Linden labs was created. In more, it will speed up the rendering. There is however still a module to add to the browser to generalize the solution.

Now if you want to know how I did, you will have to reopen this issue, and place apologies for one month on the splash screen of the viewer, for speaking to us as if we were all idiots. ]

Moon Fargis made changes - 09/Oct/09 01:35 AM

Resolution	Expected Behavior [ 9 ]
Status	Resolved [ 5 ]	Reopened [ 4 ]

Harleen Gretzky made changes - 09/Oct/09 04:19 AM

Status	Reopened [ 4 ]	Resolved [ 5 ]
Resolution		Expected Behavior [ 9 ]

Harleen Gretzky made changes - 15/Nov/09 09:02 PM

Link

This issue is original of duplicate ~~VWR-16103~~ [ ~~VWR-16103~~ ]