blender
/
blender-addons
17
34
Fork 93
Code Issues 527 Pull Requests 32 Projects 1 Releases Wiki Activity

UV Export: add option to export UV tiles #104940

Merged
Damien Picard merged 4 commits from pioverfour/blender-addons:dp_export_uv_udim into main 2023-10-09 22:32:24 +02:00
Conversation 0 Commits 4 Files Changed 4 +91 -29
Damien Picard commented 2023-10-08 23:52:29 +02:00
Member
Copy Link

Tiles can now be exported, with either the UDIM or UVTILE numbering
scheme.

Exporters for PNG, SVG and EPS were updated. The vector formats simply
offset the view, so all UVs can end up being exported multiple times.

Only tiles containing UV points will be exported. In theory, this may
result in some polygons being ignored, if they cross a whole otherwise
empty tile, but this should not happen in practice.

Fixes #74325

Tiles can now be exported, with either the UDIM or UVTILE numbering scheme. Exporters for PNG, SVG and EPS were updated. The vector formats simply offset the view, so all UVs can end up being exported multiple times. Only tiles containing UV points will be exported. In theory, this may result in some polygons being ignored, if they cross a whole otherwise empty tile, but this should not happen in practice. Fixes #74325
Damien Picard added the
Interest
UV Editing
 label 2023-10-08 23:52:29 +02:00
Damien Picard added 1 commit 2023-10-08 23:52:32 +02:00
bcfb804811 UV Export: add option to export UV tiles 
Tiles can now be exported, with either the UDIM or UV numbering
scheme.

Exporters for PNG, SVG and EPS were updated. The vector formats simply
offset the view, so all UVs can end up being exported multiple times.

Only tiles containing UV points will be exported. In theory, this may
result in some polygons being ignored, if they cross a whole otherwise
empty tile, but this should not happen in practice.

Fixes #74325
Jesse Yurkovich reviewed 2023-10-09 03:20:45 +02:00
Jesse Yurkovich left a comment
Member
Copy Link

Ah, thanks for picking this task up! I should have done so when adding the UDIM and UVTILE patterns last year. Left 2 comments to consider but functionally it works well on some simple setups as well as the "Monster - UDIM" demo file.

Ah, thanks for picking this task up! I should have done so when adding the UDIM and UVTILE patterns last year. Left 2 comments to consider but functionally it works well on some simple setups as well as the "Monster - UDIM" demo file.
io_mesh_uv_layout/__init__.py Outdated
@ -57,0 +62,4 @@
('UDIM', "UDIM",
"Export tiles in the UDIM notation: 1001 + u-tile + 10*v-tile"),
('UV', "UV Tiles",
"Export tiles in the UV notation: u(u-tile + 1)_v(v-tile + 1)"),
Jesse Yurkovich commented 2023-10-09 03:08:37 +02:00
Member
Copy Link

I wonder if we should be more descriptive here? Maybe call the items "UDIM format" and "UVTILE format" as these are the 2 formats that both Blender and MaterialX supports and their names are somewhat known in the ecosystem [1]. Also because there's another "uvtile format" (lowercase) which is slightly different [2]

[1] https://materialx.org/assets/MaterialX.v1.38.Spec.pdf (Page 18)
[2] https://openimageio.readthedocs.io/en/v2.5.4.0/texturesys.html#udim-texture-atlases

I wonder if we should be more descriptive here? Maybe call the items "UDIM format" and "UVTILE format" as these are the 2 formats that both Blender and MaterialX supports and their names are somewhat known in the ecosystem [1]. Also because there's another "uvtile format" (lowercase) which is slightly different [2] [1] https://materialx.org/assets/MaterialX.v1.38.Spec.pdf (Page 18) [2] https://openimageio.readthedocs.io/en/v2.5.4.0/texturesys.html#udim-texture-atlases
Damien Picard commented 2023-10-09 11:31:09 +02:00
Author
Member
Copy Link

Thanks, I wasn’t aware of that! I agree that “UVTILE” should be used instead of “UV Tiles”, but I’m not sure about adding “Format”, it seems redundant to me for the label. From your link, OIIO seems to call these “numbering schemes”, which is more descriptive than “notation”.
How about:

            ('UDIM', "UDIM",
             "Export tiles in the UDIM numbering scheme: 1001 + u-tile + 10*v-tile"),
            ('UVTILE', "UVTILE",
             "Export tiles in the UVTILE numbering scheme: u(u-tile + 1)_v(v-tile + 1)"),
Thanks, I wasn’t aware of that! I agree that “UVTILE” should be used instead of “UV Tiles”, but I’m not sure about adding “Format”, it seems redundant to me for the label. From your link, OIIO seems to call these “numbering schemes”, which is more descriptive than “notation”. How about: ``` ('UDIM', "UDIM", "Export tiles in the UDIM numbering scheme: 1001 + u-tile + 10*v-tile"), ('UVTILE', "UVTILE", "Export tiles in the UVTILE numbering scheme: u(u-tile + 1)_v(v-tile + 1)"), ```
deadpin marked this conversation as resolved
io_mesh_uv_layout/__init__.py Outdated
@ -164,0 +210,4 @@
tiles = set()
for poly in polygon_data:
for uv in poly[0]:
tiles.add((floor(uv[0]), floor(uv[1])))
Jesse Yurkovich commented 2023-10-09 03:11:54 +02:00
Member
Copy Link

There's a small gotcha here in that UV coords that "touch" the upper edge or the right edge of a tile might be categorized as existing in the tile above or to the right of its "real" tile. I.e. export the default Cube in UDIM layout and you'll get 2 tiles, 1001 and 1011.

You can mimic what's done in Cycles here to lie about such UV coords: https://projects.blender.org/blender/blender/blame/branch/main/intern/cycles/scene/attribute.cpp#L461

There's a small gotcha here in that UV coords that "touch" the upper edge or the right edge of a tile might be categorized as existing in the tile above or to the right of its "real" tile. I.e. export the default Cube in UDIM layout and you'll get 2 tiles, 1001 and 1011. You can mimic what's done in Cycles here to lie about such UV coords: https://projects.blender.org/blender/blender/blame/branch/main/intern/cycles/scene/attribute.cpp#L461
Damien Picard commented 2023-10-09 12:02:00 +02:00
Author
Member
Copy Link

This works well on the cube!

This works well on the cube!
pioverfour marked this conversation as resolved
Damien Picard added 1 commit 2023-10-09 12:03:10 +02:00
688f388cae Address review 
- Tweak enum items
- Add a check for UVs at the edge of a tile

Also sort tiles before export so they are exported in a predictable
order.
Damien Picard added 1 commit 2023-10-09 14:14:10 +02:00
Damien Picard added 1 commit 2023-10-09 15:26:34 +02:00
Jesse Yurkovich approved these changes 2023-10-09 21:32:55 +02:00
Jesse Yurkovich left a comment
Member
Copy Link

Looks good to me.

Looks good to me.
🎉 1
Damien Picard merged commit 122534edfb into main 2023-10-09 22:32:24 +02:00
Damien Picard deleted branch dp_export_uv_udim 2023-10-09 22:32:25 +02:00
Sign in to join this conversation.
Reviewers
No reviewers
Jesse Yurkovich
Labels
Clear labels   
Interest
Animation & Rigging

  
Interest
Blender Cloud

  
Interest
Collada

  
Interest
Core

  
Interest
Documentation

  
Interest
Eevee & Viewport

  
Interest
Geometry Nodes

  
Interest
Grease Pencil

  
Interest
Import and Export

  
Interest
Modeling

  
Interest
Modifiers

  
Interest
Nodes & Physics

  
Interest
Pipeline, Assets & IO

  
Interest
Platforms, Builds, Tests & Devices

  
Interest
Python API

  
Interest
Rendering & Cycles

  
Interest
Sculpt, Paint & Texture

  
Interest
Translations

  
Interest
User Interface

  
Interest
UV Editing

  
Interest
VFX & Video

  
Meta
Good First Issue

  
Meta
Papercut

  
Module
Add-ons (BF-Blender)

  
Module
Add-ons (Community)

  
Platform
Linux

  
Platform
macOS

  
Platform
Windows

  
Priority
High

  
Priority
Low

  
Priority
Normal

  
Priority
Unbreak Now!

  
Status
Archived

  
Status
Confirmed

  
Status
Duplicate

  
Status
Needs Info from Developers

  
Status
Needs Information from User

  
Status
Needs Triage

  
Status
Resolved

  
Type
Bug

  
Type
Design

  
Type
Known Issue

  
Type
Patch

  
Type
Report

  
Type
To Do

No Label
Interest
Animation & Rigging
Interest
Blender Cloud
Interest
Collada
Interest
Core
Interest
Documentation
Interest
Eevee & Viewport
Interest
Geometry Nodes
Interest
Grease Pencil
Interest
Import and Export
Interest
Modeling
Interest
Modifiers
Interest
Nodes & Physics
Interest
Pipeline, Assets & IO
Interest
Platforms, Builds, Tests & Devices
Interest
Python API
Interest
Rendering & Cycles
Interest
Sculpt, Paint & Texture
Interest
Translations
Interest
User Interface
Interest
UV Editing
Interest
VFX & Video
Meta
Good First Issue
Meta
Papercut
Module
Add-ons (BF-Blender)
Module
Add-ons (Community)
Platform
Linux
Platform
macOS
Platform
Windows
Priority
High
Priority
Low
Priority
Normal
Priority
Unbreak Now!
Status
Archived
Status
Confirmed
Status
Duplicate
Status
Needs Info from Developers
Status
Needs Information from User
Status
Needs Triage
Status
Resolved
Type
Bug
Type
Design
Type
Known Issue
Type
Patch
Type
Report
Type
To Do
Milestone
Clear milestone
No items
No Milestone
Projects
Clear projects
No project
Assignees
Clear assignees
No Assignees
2 Participants
Notifications
Due Date
The due date is invalid or out of range. Please use the format 'yyyy-mm-dd'.

No due date set.

Dependencies

No dependencies set.

Reference: blender/blender-addons#104940
No description provided.
Delete Branch "pioverfour/blender-addons:dp_export_uv_udim"

Deleting a branch is permanent. Although the deleted branch may continue to exist for a short time before it actually gets removed, it CANNOT be undone in most cases. Continue?