change all materials to shadless?

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1

i need to change all materials in my scene to shadless, before i go through all them manually, and there are alot, is there any way a python script could change a material setting for all materials in a file?

any help appriciated.

2

you know, you can set all materials to a single material when doing pre-vis rendering, to check the lighting. Use the Mat: text field in the RenderLayer panel.
And, the Game Engine ignores light, effectively making them shadeless automatically.

3

NOt so sure about that one…

4

The method you are going to need while iterating the materials is http://www.blender.org/documentation/244PythonDoc/Material.Material-class.html#setMode .

5

The following should do the trick:

import Blender
mats = Blender.Material.Get()
for i in mats:
    mode = i.getMode()
    if not mode & Blender.Material.Modes['SHADELESS']:
        mode+=4
        i.setMode(mode)
Blender.Window.RedrawAll()