Page MenuHome

Warped UV Layout
Closed, ArchivedPublic

Description

System Information
Operating system and graphics card

OS: Windows 7 Home Premium, SP 1
Graphics Card: AMD Radeon HD 6320

Blender Version
Broken: 2.70, Hash: 19e627c
Worked: Haven't tested.

Short description of error
While in Cycles, I used the "Project from view" UV unwrap option. After resizing the UV image, the layout got squished. I tried project fomr view again to fix it, but it stayed warped until I switched to the internal renderer and used the option, it went back to normal.
Exact steps for others to reproduce the error
To reproduce: While in cycles, use project from view on an object, then resize the default UV image horizontally or vertically. The wires should get squished. Try projecting it again in, still in cycles. It won't fix the squishing, but if you re-project it in BI it will fix the problem.
Based on a (as simple as possible) attached .blend file with minimum amount of steps

Details

Type
Bug

Event Timeline

Computer Guy (Terrance8d) set Type to Bug.
Computer Guy (Terrance8d) created this task.
Computer Guy (Terrance8d) raised the priority of this task from to Needs Triage by Developer.

If you have no texture node connected to shader in node editor blender assumes that there is square texture. No matter what is opened in image editor. So if you have image with other than 1:1 proportion rectangle, projection is squashed.

You can fix it by plugging this image as a texture to some input in node editor, but still it is a bug. I would like to projection work in cycles in the same way like in internal with proportion of opened in UV editor texture instead of plugged texture node.

by "proportion" I meant Aspect Ratio of image.Please forgive my English.

another thing is that if you don't have this texture node connected in cycles material UV -> show other object does not work

Brecht Van Lommel (brecht) claimed this task.

This is by design. It's is confusing and may get improved at some point, but currently the image shown in the image editor is decoupled from the one assigned in the material.
http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Texture_Editing