Baking textures for PBR object

[krfft]

Is it possible to bake the values of the reflection channel into textures using "Bake object"?

[r_gigante]

Hi krftt thanks for reaching out us.

With regard to your question, if the intent is to bake the final appearance of a PBR material on a texture, I confirm that there are no means to achieve this considering that the baked data will also be camera-dependent.

If, on the contrary, your goal is to sample the shader used in any of the reflection layers used in a PBR material you can consider BaseShader::Sample() and, given a ChannelData, retrieve the color at a specific point - see this thread.

To browse through the different channel you can use something like:

    # check for an active material
    mat = doc.GetActiveMaterial()
    if mat is None:
        return
    
    # retrieve the reflection layers count
    layersCount = mat.GetReflectionLayerCount()
    
    # loop through the layers
    for i in xrange(layersCount):
        # get the ReflectionLayer instance and the related data ID
        reflLayer = mat.GetReflectionLayerIndex(i)
        reflLayerData = reflLayer.GetDataID()
        # check for the instance to be the one currently active in the Attribute Manager
        if reflLayer.GetFlags() & (c4d.REFLECTION_FLAG_TAB):
            # retrieve the color
            color = mat[reflLayerData + c4d.REFLECTION_LAYER_COLOR_COLOR]   
            # try to retrieve the shader
            colorShader = mat[reflLayerData + c4d.REFLECTION_LAYER_COLOR_TEXTURE]

            # do something with the data retrieved
            if colorShader is None:
                print "Selected layer is ", reflLayer.GetName(), "and uses color: ", color
            else:
                print "Selected layer is ", reflLayer.GetName(), "and uses shader: ", colorShader.GetName()

Best, Riccardo