Texture Coordinate node, From Instancer option do not work as expected in 2.8 #60646

New Issue

Mihail · 2019-01-19T09:53:10+01:00

Mihail commented

2019-01-19 09:53:10 +01:00

System Information
Operating system: Windows 7 SP1 (x64)
Graphics card: nVidia GeForce GTX 1080 Ti

Blender Version
Broken:
version: 2.80 (sub 41), branch: master, commit date: 2019-01-17 10:44, hash: ad707115d5, type: Release, build date: 17/01/2019, 03:08

Worked:
version: 2.79 (sub 0), branch: master, commit date: 2017-09-11 10:43, hash: 5bd8ac9, type: build, date: Mon 09/11/2017, 07:44 AM

Short description of error
In Shader Editor, Texture Coordinate node, option "From Instancer" ("From Dupli" in case of Blender 2.79) do not work in Blender 2.8 in case when we are trying to get surface color from particle emitter and use it in particle material when render particles/hairs as objects.
Attached overview image shows how same .blend file renders in 2.79 (cycles) and 2.8 (cycles and eevee).

Edit 28.01.2019 : In case of 2.8+Cycles issue only appears in viewport rendering mode. Full render works as expected.

Exact steps for others to reproduce the error
Attached .blend file and texture file with issues.

Steps from default scene:

Add new Cube with "Generate UVs" option
Create new texture image in Image Editor
Create material for cube which is using new texture as color input in diffuse bsdf (UV as texture coordinate)
In Texture Paint mode add some colors to Cube' texture
Create a Plain with "Generate UVs" option
Create material for new plain, add Texture Coordinate and Image Textude nodes, check "From Instancer" ("From Dupli" in 2.79), link UV output with Vector, select same image in Image Texture as in Cube material.
Create Particle system for a Cube, check "Hair" as type of particle system, set Render -> Render As "Object", select Plain as object

report.blend

system-info.txt

**System Information** Operating system: Windows 7 SP1 (x64) Graphics card: nVidia GeForce GTX 1080 Ti **Blender Version** Broken: version: 2.80 (sub 41), branch: master, commit date: 2019-01-17 10:44, hash: ad707115d5bc, type: Release, build date: 17/01/2019, 03:08 Worked: version: 2.79 (sub 0), branch: master, commit date: 2017-09-11 10:43, hash: 5bd8ac9, type: build, date: Mon 09/11/2017, 07:44 AM **Short description of error** In Shader Editor, Texture Coordinate node, option "From Instancer" ("From Dupli" in case of Blender 2.79) do not work in Blender 2.8 in case when we are trying to get surface color from particle emitter and use it in particle material when render particles/hairs as objects. Attached overview image shows how same .blend file renders in 2.79 (cycles) and 2.8 (cycles and eevee). Edit 28.01.2019 : In case of 2.8+Cycles issue only appears in viewport rendering mode. Full render works as expected. **Exact steps for others to reproduce the error** Attached .blend file and texture file with issues. Steps from default scene: 1. Add new Cube with "Generate UVs" option 2. Create new texture image in Image Editor 3. Create material for cube which is using new texture as color input in diffuse bsdf (UV as texture coordinate) 4. In Texture Paint mode add some colors to Cube' texture 5. Create a Plain with "Generate UVs" option 6. Create material for new plain, add Texture Coordinate and Image Textude nodes, check "From Instancer" ("From Dupli" in 2.79), link UV output with Vector, select same image in Image Texture as in Cube material. 7. Create Particle system for a Cube, check "Hair" as type of particle system, set Render -> Render As "Object", select Plain as object ![IssueOverview.png](https://archive.blender.org/developer/F6334369/IssueOverview.png) [report.blend](https://archive.blender.org/developer/F6334243/report.blend) ![EmitterSurface.png](https://archive.blender.org/developer/F6334245/EmitterSurface.png) [system-info.txt](https://archive.blender.org/developer/F6334249/system-info.txt)

Mihail commented

2019-01-19 09:53:10 +01:00

Added subscriber: @Maonyao

Sergey Sharybin was assigned by Sebastian Parborg

2019-01-28 15:11:09 +01:00

Philipp Oeser commented

2019-01-28 15:37:34 +01:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2019-01-28 15:37:34 +01:00

Actual cycles render seems to work fine (it is just viewport rendering that fails...)

Eevee: this is a know limitation for now, listed here https://docs.blender.org/manual/en/dev/render/eevee/materials/nodes_support.html#other-nodes-support
quote:

Texture Coordinate Node: From Dupli and coordinate from custom Object is not supported.

What is left: viewport rendering.
Similar case in #57922 (though not the same)

But I think what sill holds true is:

In #57922#556206, @lichtwerk wrote:
regarding 2.8 and viewport rendering: UVs are only calculated if we are in DAG_EVAL_RENDER mode (see here ), but we are in DAG_EVAL_VIEWPORT (even if set to cycles viewport rendering)

Actual cycles render seems to work fine (it is just viewport rendering that fails...) Eevee: this is a know limitation for now, listed here https://docs.blender.org/manual/en/dev/render/eevee/materials/nodes_support.html#other-nodes-support quote: > Texture Coordinate Node: From Dupli and coordinate from custom Object is not supported. What is left: viewport rendering. Similar case in #57922 (though not the same) But I think what sill holds true is: > In #57922#556206, @lichtwerk wrote: > regarding 2.8 and viewport rendering: UVs are only calculated if we are in `DAG_EVAL_RENDER` mode (see [here ](https://developer.blender.org/diffusion/B/browse/blender2.8/source/blender/blenkernel/intern/object_dupli.c;a29740e2904f12833a1c8d26926979a1cfb293da$800)), but we are in `DAG_EVAL_VIEWPORT` (even if set to cycles viewport rendering)

blender-admin commented

2019-02-21 17:25:34 +01:00

This issue was referenced by fc55861efa

This issue was referenced by fc55861efaa2b85cc7b2e11a9dabc2712cc8b8da

Sergey Sharybin commented

2019-02-21 17:34:40 +01:00

Changed status from 'Open' to: 'Resolved'

Sergey Sharybin closed this issue

2019-02-21 17:34:40 +01:00

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Texture Coordinate node, From Instancer option do not work as expected in 2.8 #60646