How can you automate BlendMode.LINEARDODGE on a 32bits/Channel image?

[propyls]

Hello everyone,

I have a stack of rendered images that came from a cg package that i'd like to create some automation for via layer blending.

The images are currently 32bits/Channel (think of them as several HDR images on layers).

I am trying to combine them using Blend Mode Linear Dodge (Add) through automation to control various lighting sources in a post process fashion.

I can get the automation to work if I am in 8 bit mode, or 16 bit mode, but I cannot automate via 32 bit. I can however manually set the blend mode via point and click in the interface while in 32 bit mode.

I am game for any style of automation that will do it.

[propyls]

I forgot to mention here is a snippet of the javascript involved.

var doc = app.activeDocument;

var lightBack = activeDocument.artLayers.getByName("Light-Back");

  doc.activeLayer = lightBack;

         lightBack.blendMode = BlendMode.LINEARDODGE;

The script fails on the last line while in 32 bit mode. Works fine in 8 or 16 bit.

[Chuck Uebele]

Many blend modes and filters don't work in 32bit mode. You'll need to convert them to at least 16 bit.

[propyls]

Correct, certain modes do not work in 32 bits/ Channel. However Linear Dodge does.

To me it seems as if the underlying BlendMode class either changes its enumerator values or has errors when automating via javascript.

[Chuck Uebele]

You're right about that one blend mode. Let me move your post to the scripting forum.

[propyls]

Here you can see that Linear Dodge (Add) is available in 32bits/Channel and does work just fine if you manually sit and click.

[I have gone]

This won't help but your code works fine with 32bit channel with Photoshop CS6 (perpetual license) on Windows 7

[propyls]

:::runs off to find top shelf where cs3 - cs6 boxes live::::::

[Chuck Uebele]

If you have CC, you can download CS6 from the Creative Cloud App as a previous version.

[propyls · Accepted solution]

Great news,

I updated to CC 2015 and the script runs perfectly. woot woot. Crisis averted. Thanks for the suggestions everyone!

[Chuck Uebele]

Excellent!