LuxCoreRender Forums

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import bpy

mat = bpy.data.materials.new(name="Material")
tree_name = "Nodes_" + mat.name
node_tree = bpy.data.node_groups.new(name=tree_name, type="luxcore_material_nodes")
mat.luxcore.node_tree = node_tree
# User counting does not work reliably with Python PointerProperty.
# Sometimes, the material this tree is linked to is not counted as user.
node_tree.use_fake_user = True

###############################################################
# Add nodes to the node tree
nodes = node_tree.nodes

output = nodes.new("LuxCoreNodeMatOutput")
output.location = 300, 200
output.select = False

glossy2 = nodes.new("LuxCoreNodeMatGlossy2")
glossy2.location = 50, 200

node_tree.links.new(glossy2.outputs[0], output.inputs[0])

# Load image, for docs on this see https://docs.blender.org/api/current/bpy_extras.image_utils.html#module-bpy_extras.image_utils
import bpy_extras
diffuse_img = bpy_extras.image_utils.load_image("/home/simon/Downloads/diamond_CPU.jpg")

# Create imagemap node
diffuse_img_node = nodes.new("LuxCoreNodeTexImagemap")
diffuse_img_node.location = -200, 200
diffuse_img_node.image = diffuse_img
node_tree.links.new(diffuse_img_node.outputs[0], glossy2.inputs["Diffuse Color"])

###############################################################

# Assign to object (if you want)
obj = bpy.context.active_object
if obj.material_slots:
    obj.material_slots[obj.active_material_index].material = mat
else:
    obj.data.materials.append(mat)

# For viewport render, we have to update the luxcore object
# because the newly created material is not yet assigned there
obj.update_tag()