id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	blockedby	blocking	notify_on_close	platform	project
1944	volumecommand.volume transparency argument broken	tic20@…	Tom Goddard	"{{{
The following bug report has been submitted:
Platform:        Linux-4.20.8-200.fc29.x86_64-x86_64-with-fedora-29-Twenty_Nine
ChimeraX Version: 0.9 (2019-05-15)
Description
This was working fine on my work machine yesterday (on a ~1-week old ChimeraX build - after the Volume API changes Tom notified me about). Now, if I open a model and map using the Clipper plugin and start navigating around, those volumes with a transparent representation fade to invisibility within the first few frames (they're still there - it's just that the alpha channel is somehow being multiplied down every time the contours are recalculated). 

Log:
UCSF ChimeraX version: 0.9 (2019-05-15)  
© 2016-2019 Regents of the University of California. All rights reserved.  
How to cite UCSF ChimeraX  

> isolde start

before.pdb title:  
Crystal structure of etub from clostridium kluyveri [more info...]  
  
Chain information for before.pdb #1  
---  
Chain | Description  
A | predicted microcompartment protein  
  
before.pdb title:  
Crystal structure of etub from clostridium kluyveri [more info...]  
  
Chain information for before.pdb  
---  
Chain | Description  
1.3/A | predicted microcompartment protein  
  
Done loading forcefield  

> volume selMaps style surface

> volume selMaps style surface




OpenGL version: 3.3.0 NVIDIA 410.93
OpenGL renderer: GeForce GTX 1070/PCIe/SSE2
OpenGL vendor: NVIDIA Corporation

}}}
"	defect	closed	moderate		Volume Data		fixed		Elaine Meng				all	ChimeraX