Hair with a bitmap texture renders incorrect #62758

New Issue

Yegor · 2019-03-20T00:16:21+01:00

Yegor commented

2019-03-20 00:16:21 +01:00

System Information
Operating system: Mint
Graphics card: GTX1080ti + GTX780

Blender Version
Broken: 2.80 latest, 2.79 latest from buildbot
Worked: 2.79b, 02a7e875d7 (from the 10th of March 2019)

Short description of error
Alarm! Alarm! Can't render hairs with a bitmap texture anymore. Procedural textures work.
I assigned a random texture on Suzanne. It's from a dog model, but nevermind. The texture pattern on the hair must be the same as on the surface, but it's messed up.
The same behavior is with the children particles involved. I guess, there is a broken mapping for the hairs happening.

Exact steps for others to reproduce the error
Hit render in the attached file

hair_texture_bug.blend

**System Information** Operating system: Mint Graphics card: GTX1080ti + GTX780 **Blender Version** Broken: 2.80 latest, 2.79 latest from buildbot Worked: 2.79b, 02a7e875d74b (from the 10th of March 2019) **Short description of error** Alarm! Alarm! Can't render hairs with a bitmap texture anymore. Procedural textures work. I assigned a random texture on Suzanne. It's from a dog model, but nevermind. The texture pattern on the hair must be the same as on the surface, but it's messed up. The same behavior is with the children particles involved. I guess, there is a broken mapping for the hairs happening. ![hair_texture_bug1.png](https://archive.blender.org/developer/F6851993/hair_texture_bug1.png) ![hair_texture_bug2.png](https://archive.blender.org/developer/F6851995/hair_texture_bug2.png) **Exact steps for others to reproduce the error** Hit render in the attached file [hair_texture_bug.blend](https://archive.blender.org/developer/F6851999/hair_texture_bug.blend)

Yegor commented

2019-03-20 00:16:21 +01:00

Added subscriber: @YegorSmirnov

Sebastian Parborg commented

2019-03-20 11:01:55 +01:00

Added subscriber: @ZedDB

Brecht Van Lommel was assigned by Sebastian Parborg

2019-03-20 11:01:55 +01:00

Sebastian Parborg commented

2019-03-20 11:01:55 +01:00

Seems to work fine with eevee however with cycles I get this assert:

blender: blender/intern/cycles/render/attribute.h:75: ccl::float2* ccl::Attribute::data_float2(): Assertion `data_sizeof() == sizeof(float2)' failed.

If I ignore the assert, I get the result posed above (incorrect color mapping of the hairs)

Seems to work fine with eevee however with cycles I get this assert: ``` blender: blender/intern/cycles/render/attribute.h:75: ccl::float2* ccl::Attribute::data_float2(): Assertion `data_sizeof() == sizeof(float2)' failed. ``` If I ignore the assert, I get the result posed above (incorrect color mapping of the hairs)

blender-admin commented

2019-03-20 16:59:49 +01:00

This issue was referenced by blender/cycles@effc6d1ba8

This issue was referenced by blender/cycles@effc6d1ba8397460adcb145f9a89310484dab1af

blender-admin commented

2019-03-20 16:59:49 +01:00

This issue was referenced by c4908c8e8c

This issue was referenced by c4908c8e8c6e29c09acadf5d2eec129fdacab5db

Brecht Van Lommel commented

2019-03-20 17:33:36 +01:00

Changed status from 'Open' to: 'Resolved'

Brecht Van Lommel closed this issue

2019-03-20 17:33:36 +01:00

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Hair with a bitmap texture renders incorrect #62758