Changing Render Aspect Ratio by script doesn't change viewport aspect ratio

[Dave_Wortley]

I'm writing a python script and I'm trying to work out how to make the viewport update as when I set the attribute with Python for "vraySettings.width" it doesn't change the viewport frame. If I change it in the VRay Render Settings UI it changes the viewport aspect ratio.... any ideas?

[Dave_Wortley]

Found out how... you need to set the defaultResolution values too.

cmds.setAttr("defaultResolution.width", newWidth)
cmds.setAttr("defaultResolution.height", newHeight)
cmds.setAttr("defaultResolution.deviceAspectRatio" , (newWidth / newHeight)
cmds.setAttr("defaultResolution.lockDeviceAspectRa tio", 0)
cmds.setAttr("defaultResolution.pixelAspect", 1.0)

[yolov]

We automatically do this when stuff is changed in the UI (we transfer to the defaultResolution node) but it might not work for script accessing those values in the vraySettings.

[Dave_Wortley]

Yeah I ripped apart the template files for VRay and found out what VRay was doing under the hood