Transparent shader leave traces #42634

New Issue

Sergey Sharybin · 2014-11-18T11:44:49+01:00

gviger commented

2014-11-18 11:44:49 +01:00

(Migrated from localhost:3001)

System Information
Windows 8 and gforce 740m

Blender Version
Broken: 2.72b 9e963ae

Transparent shader is buggy leaving traces set with white color, I can't use it to create animations for fadein/fadeout animations

Open attached blend file
In bottom screen switch to rendered view
In top Node editor view, move last Mix Shader before Material output, to 1 so material will be fully transaprent
There is black lines on objects (bug)

Based on a (as simple as possible) attached .blend file with minimum amount of steps

**System Information** Windows 8 and gforce 740m **Blender Version** Broken: 2.72b 9e963ae Transparent shader is buggy leaving traces set with white color, I can't use it to create animations for fadein/fadeout animations 1. Open attached blend file 2. In bottom screen switch to rendered view 3. In top Node editor view, move last Mix Shader before Material output, to 1 so material will be fully transaprent 4. There is black lines on objects (bug) ``` ``` Based on a (as simple as possible) attached .blend file with minimum amount of steps

gviger commented

2014-11-18 11:44:49 +01:00

(Migrated from localhost:3001)

Changed status to: 'Open'

gviger commented

2014-11-18 11:44:49 +01:00

(Migrated from localhost:3001)

Added subscriber: @gviger

Sergey Sharybin commented

2014-11-18 15:09:59 +01:00

Added subscriber: @Sergey

Sergey Sharybin commented

2014-11-18 15:09:59 +01:00

I don't see attachments in here, mind re-uploading or uploading them somewhere else if they're more than 5meg?

gviger commented

2014-11-19 00:07:23 +01:00

(Migrated from localhost:3001)

sample-test1.blend

This is the file.

[sample-test1.blend](https://archive.blender.org/developer/F124746/sample-test1.blend) This is the file.

Julian Eisel commented

2014-11-27 22:01:41 +01:00

Added subscribers: @ThomasDinges, @JulianEisel

Julian Eisel commented

2014-11-27 22:01:41 +01:00

No reason to leave this as incomplete.

I had a quick look at the .blend file and can confirm the issue. It helped to bump up transparency max bounces, but not sure if black lines are expected symptoms for too few transparency bounces. @ThomasDinges, can you help here?

No reason to leave this as incomplete. I had a quick look at the .blend file and can confirm the issue. It helped to bump up transparency max bounces, but not sure if black lines are expected symptoms for too few transparency bounces. @ThomasDinges, can you help here?

Jesus novo castro commented

2014-11-27 22:38:30 +01:00

Added subscriber: @Jesusnovocastro-2

Jesus novo castro commented

2014-11-27 22:38:30 +01:00

Sorry for my English
Need more transparent Bounces{F127384}

Sorry for my English Need more transparent Bounces{[F127384](https://archive.blender.org/developer/F127384/sample-test1.blend.png)}

Adam Friesen commented

2014-11-28 01:29:57 +01:00

Added subscriber: @Ace_Dragon

Adam Friesen commented

2014-11-28 01:29:57 +01:00

All I see in the image is two dots, nothing that a few more samples are not going to clear away.

Please note that even though it is a simple transparent shader, an evaluation still needs to be done for all samples that hit the surface and likewise will likely start out with some noise. (99 percent of cases simply cannot be converged with just ten samples).

All I see in the image is two dots, nothing that a few more samples are not going to clear away. Please note that even though it is a simple transparent shader, an evaluation still needs to be done for all samples that hit the surface and likewise will likely start out with some noise. (99 percent of cases simply cannot be converged with just ten samples).

Julian Eisel commented

2014-11-28 01:34:41 +01:00

Changed status from 'Open' to: 'Archived'

Julian Eisel closed this issue

2014-11-28 01:34:41 +01:00

Julian Eisel self-assigned this 2014-11-28 01:34:41 +01:00

Julian Eisel commented

2014-11-28 01:34:41 +01:00

Okay, so it seems we can close this. Thanks all :)

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Transparent shader leave traces #42634