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Maniphest T39516

Having an object with a dense triangle mesh will cause it to not render in the viewport if the viewport mode is wireframe.
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Description

System Information
OS: Linux Mint 16 64 bit
CPU: AMD Phenom(tm) II X6 1090T Processor
GPU: NVIDIA GeForce GTX 480

Blender Version
Broken: 2.70 64 bit, Linux (Hash: 19e627c)

Short description of error
Creating an object with dense triangles will cause it to not render in the viewport if the viewport mode is wireframe, and the object interaction mode is object mode. I have tried this with an icosphere and cone.

Exact steps for others to reproduce the error

  1. Create an object with a dense triangle mesh (I tried with an ico sphere and cone).
  2. For the ico sphere, I used a subdivision settings of 6, and cone with a verticies settings of 178.
  3. Making sure that you're in object mode, switch to wireframe draw.
  4. The dense triangles will not draw.

Event Timeline

Scott Wilson (g_dragon) created this task.Mar 30 2014, 6:19 PM
Scott Wilson (g_dragon) raised the priority of this task from to 90.
Scott Wilson (g_dragon) updated the task description. (Show Details)
Scott Wilson (g_dragon) added a project: BF Blender.
Scott Wilson (g_dragon) edited a custom field.
Scott Wilson (g_dragon) added a subscriber: Scott Wilson (g_dragon).
Bastien Montagne (mont29) lowered the priority of this task from 90 to 30.Mar 30 2014, 6:20 PM
Bastien Montagne (mont29) added a subscriber: Bastien Montagne (mont29).

Please attach a .blend file illustrating the issue.

Scott Wilson (g_dragon) added a comment.Mar 30 2014, 8:20 PM

Sorry about that. I've attached a blend file with the test models.

triangleWireframeBug.blend2 MBDownload

Bastien Montagne (mont29) raised the priority of this task from 30 to 50.Mar 30 2014, 8:33 PM

Thanks for the file, can confirm the issue… :/

Bastien Montagne (mont29) added a comment.Mar 30 2014, 8:34 PM

Note that enabling the object's option "Draw All Edges" fixes the issue.

Sergey Sharybin (sergey) changed the task status from Unknown Status to Unknown Status.Apr 10 2014, 5:55 PM
Sergey Sharybin (sergey) claimed this task.

This is an old know behavior -- if the angle between faces is low enough the edge wouldn't display. This keeps the viewport clear in cases like SS-ed human body and so. But might fail in some other cases. Just be aware and enable Draw All Edges when you encounter the issue.

Thanks for the report, but it's not a bug.