change shader on all assigned meshes, without using hyperShade()

问题

I get all shapes assigned to baseMaterial, select the shapes and then assign the occlusionShader.

for materialClass in materialClassList:
    select(materialClass.baseMaterial)
    hyperShade(objects="")
    hyperShade(a=materialClass.occlusionShader)

works just fine, but if I use it as a pre render script:

  Error: line 0: hyperShade command not supported in batch mode

What can I change the two last lines of my function to to make this work?

回答1:

Here is an example with cmds.sets() to assign a shader :

all = cmds.ls(type='mesh')
shadingEngine = 'initialShadingGroup'
cmds.sets(all, e=True, forceElement=shadingEngine)

as you can guess, to query meshes with the material :

lamb1_mshs = cmds.sets(shadingEngine, q=True)

回答2:

i got it to work with:

for materialClass in materialClassList:
    sets(materialClass.occlusionShadingGroup, e = True, forceElement = materialClass.meshList)

I collect the meshes when I create the materialClass now, which makes much more sense then selecting them for each renderlayer.

来源：https://stackoverflow.com/questions/49035311/change-shader-on-all-assigned-meshes-without-using-hypershade