Added back texture Atlas
- Now working with Alpha 2. - Did some changed but it should still work, did some basic testing. - Do want to make further changes and make the system better where possible.
This commit is contained in:
Yusarina
@@ -0,0 +1,290 @@
|
||||
from pathlib import Path
|
||||
import numpy
|
||||
import bpy
|
||||
import os
|
||||
from typing import List, Optional
|
||||
from bpy.types import Material, Operator, Context, Object, Image, Mesh, MeshUVLoopLayer, Float2AttributeValue, ShaderNodeTexImage, ShaderNodeBsdfPrincipled, ShaderNodeNormalMap
|
||||
from ..core.common import SceneMatClass, MaterialListBool, ProgressTracker
|
||||
from ..core.packer.rectangle_packer import MaterialImageList, BinPacker
|
||||
from ..core.translations import t
|
||||
from ..core.logging_setup import logger
|
||||
|
||||
class MaterialImageList:
|
||||
def __init__(self):
|
||||
self.albedo: Image = None
|
||||
self.normal: Image = None
|
||||
self.emission: Image = None
|
||||
self.ambient_occlusion: Image = None
|
||||
self.height: Image = None
|
||||
self.roughness: Image = None
|
||||
self.material: Material = None
|
||||
self.parent_mesh: Object = None
|
||||
self.w: int = 0
|
||||
self.h: int = 0
|
||||
self.fit = None
|
||||
|
||||
def scale_images_to_largest(images: List[Image]) -> tuple[int, int]:
|
||||
x: int = 0
|
||||
y: int = 0
|
||||
|
||||
valid_images = [img for img in images if img and img.has_data]
|
||||
|
||||
if not valid_images:
|
||||
return 0, 0
|
||||
|
||||
for image in valid_images:
|
||||
x = max(x, image.size[0])
|
||||
y = max(y, image.size[1])
|
||||
|
||||
for image in valid_images:
|
||||
image.scale(width=int(x), height=int(y))
|
||||
|
||||
return x, y
|
||||
|
||||
def MaterialImageList_to_Image_list(classitem: MaterialImageList) -> List[Image]:
|
||||
return [
|
||||
classitem.albedo,
|
||||
classitem.normal,
|
||||
classitem.emission,
|
||||
classitem.ambient_occlusion,
|
||||
classitem.height,
|
||||
classitem.roughness
|
||||
]
|
||||
|
||||
def get_material_images_from_scene(context: Context) -> list[MaterialImageList]:
|
||||
material_image_list: list[MaterialImageList] = []
|
||||
|
||||
with ProgressTracker(context, len(context.scene.objects), "Processing Materials") as progress:
|
||||
for obj in context.scene.objects:
|
||||
if obj.type == 'MESH':
|
||||
for mat_slot in obj.material_slots:
|
||||
# Only process materials that are selected for atlas
|
||||
if mat_slot.material and mat_slot.material.include_in_atlas is True:
|
||||
new_mat_image_item = MaterialImageList()
|
||||
try:
|
||||
new_mat_image_item.albedo = bpy.data.images[mat_slot.material.texture_atlas_albedo]
|
||||
except Exception:
|
||||
name = mat_slot.material.name + "_albedo_replacement"
|
||||
if name in bpy.data.images:
|
||||
bpy.data.images.remove(image=bpy.data.images[name], do_unlink=True)
|
||||
new_mat_image_item.albedo = bpy.data.images.new(name=name, width=32, height=32, alpha=True)
|
||||
new_mat_image_item.albedo.pixels[:] = numpy.tile(numpy.array([0.0,0.0,0.0,1.0]), 32*32)
|
||||
try:
|
||||
new_mat_image_item.normal = bpy.data.images[mat_slot.material.texture_atlas_normal]
|
||||
except Exception:
|
||||
name = mat_slot.material.name + "_normal_replacement"
|
||||
if name in bpy.data.images:
|
||||
bpy.data.images.remove(image=bpy.data.images[name], do_unlink=True)
|
||||
new_mat_image_item.normal = bpy.data.images.new(name=name, width=32, height=32, alpha=True)
|
||||
new_mat_image_item.normal.pixels[:] = numpy.tile(numpy.array([0.5,0.5,1.0,1.0]), 32*32)
|
||||
try:
|
||||
new_mat_image_item.emission = bpy.data.images[mat_slot.material.texture_atlas_emission]
|
||||
except Exception:
|
||||
name = mat_slot.material.name + "_emission_replacement"
|
||||
if name in bpy.data.images:
|
||||
bpy.data.images.remove(image=bpy.data.images[name], do_unlink=True)
|
||||
new_mat_image_item.emission = bpy.data.images.new(name=name, width=32, height=32, alpha=True)
|
||||
new_mat_image_item.emission.pixels[:] = numpy.tile(numpy.array([0.0,0.0,0.0,1.0]), 32*32)
|
||||
try:
|
||||
new_mat_image_item.ambient_occlusion = bpy.data.images[mat_slot.material.texture_atlas_ambient_occlusion]
|
||||
except Exception:
|
||||
name = mat_slot.material.name + "_ambient_occlusion_replacement"
|
||||
if name in bpy.data.images:
|
||||
bpy.data.images.remove(image=bpy.data.images[name], do_unlink=True)
|
||||
new_mat_image_item.ambient_occlusion = bpy.data.images.new(name=name, width=32, height=32, alpha=True)
|
||||
new_mat_image_item.ambient_occlusion.pixels[:] = numpy.tile(numpy.array([1.0,1.0,1.0,1.0]), 32*32)
|
||||
try:
|
||||
new_mat_image_item.height = bpy.data.images[mat_slot.material.texture_atlas_height]
|
||||
except Exception:
|
||||
name = mat_slot.material.name + "_height_replacement"
|
||||
if name in bpy.data.images:
|
||||
bpy.data.images.remove(image=bpy.data.images[name], do_unlink=True)
|
||||
new_mat_image_item.height = bpy.data.images.new(name=name, width=32, height=32, alpha=True)
|
||||
new_mat_image_item.height.pixels[:] = numpy.tile(numpy.array([0.5,0.5,0.5,1.0]), 32*32)
|
||||
try:
|
||||
new_mat_image_item.roughness = bpy.data.images[mat_slot.material.texture_atlas_roughness]
|
||||
except Exception:
|
||||
name = mat_slot.material.name + "_roughness_replacement"
|
||||
if name in bpy.data.images:
|
||||
bpy.data.images.remove(image=bpy.data.images[name], do_unlink=True)
|
||||
new_mat_image_item.roughness = bpy.data.images.new(name=name, width=32, height=32, alpha=True)
|
||||
new_mat_image_item.roughness.pixels[:] = numpy.tile(numpy.array([1.0,1.0,1.0,0.0]), 32*32)
|
||||
|
||||
new_mat_image_item.material = mat_slot.material
|
||||
new_mat_image_item.parent_mesh = obj
|
||||
material_image_list.append(new_mat_image_item)
|
||||
|
||||
progress.step(f"Processed {obj.name}")
|
||||
|
||||
return material_image_list
|
||||
|
||||
def prep_images_in_scene(context: Context) -> List[MaterialImageList]:
|
||||
preped_images = get_material_images_from_scene(context)
|
||||
|
||||
with ProgressTracker(context, len(preped_images), "Preparing Images") as progress:
|
||||
for MaterialImageClass in preped_images:
|
||||
ImageList = MaterialImageList_to_Image_list(MaterialImageClass)
|
||||
MaterialImageClass.w, MaterialImageClass.h = scale_images_to_largest(ImageList)
|
||||
progress.step(f"Scaled images for {MaterialImageClass.material.name}")
|
||||
|
||||
return preped_images
|
||||
|
||||
class AvatarToolKit_OT_AtlasMaterials(Operator):
|
||||
bl_idname = "avatar_toolkit.atlas_materials"
|
||||
bl_label = t("TextureAtlas.atlas_materials")
|
||||
bl_description = t("TextureAtlas.atlas_materials_desc")
|
||||
bl_options = {'REGISTER', 'UNDO'}
|
||||
|
||||
@classmethod
|
||||
def poll(cls, context: Context) -> bool:
|
||||
return context.scene.avatar_toolkit.texture_atlas_Has_Mat_List_Shown
|
||||
|
||||
def execute(self, context: Context) -> set:
|
||||
try:
|
||||
selected_materials = [m for m in prep_images_in_scene(context)
|
||||
if m.material and m.material.include_in_atlas]
|
||||
|
||||
if not selected_materials:
|
||||
self.report({'WARNING'}, t("TextureAtlas.no_materials_selected"))
|
||||
return {'CANCELLED'}
|
||||
|
||||
logger.info("Starting material atlas creation")
|
||||
|
||||
packer = BinPacker(selected_materials)
|
||||
mat_images = packer.fit()
|
||||
|
||||
size = [
|
||||
max([matimg.fit.w + matimg.albedo.size[0] for matimg in mat_images]),
|
||||
max([matimg.fit.h + matimg.albedo.size[1] for matimg in mat_images])
|
||||
]
|
||||
|
||||
atlased_mat = MaterialImageList()
|
||||
|
||||
# UV Remapping
|
||||
with ProgressTracker(context, len(bpy.data.objects), "Remapping UVs") as progress:
|
||||
for mat in mat_images:
|
||||
x, y = int(mat.fit.x), int(mat.fit.y)
|
||||
w, h = int(mat.albedo.size[0]), int(mat.albedo.size[1])
|
||||
|
||||
for obj in bpy.data.objects:
|
||||
if obj.type == 'MESH':
|
||||
mesh = obj.data
|
||||
for layer in mesh.polygons:
|
||||
if (obj.material_slots[layer.material_index].material and
|
||||
obj.material_slots[layer.material_index].material == mat.material):
|
||||
for loop_idx in layer.loop_indices:
|
||||
for layer_loops in mesh.uv_layers:
|
||||
uv_item = layer_loops.uv[loop_idx]
|
||||
uv_item.vector.x = (uv_item.vector.x*(w/size[0]))+(x/size[0])
|
||||
uv_item.vector.y = (uv_item.vector.y*(h/size[1]))+(y/size[1])
|
||||
progress.step(f"Processed UVs for {obj.name}")
|
||||
|
||||
# Create atlas textures
|
||||
texture_types = ["albedo", "normal", "emission", "ambient_occlusion", "height", "roughness"]
|
||||
|
||||
with ProgressTracker(context, len(texture_types), "Creating Atlas Textures") as progress:
|
||||
for type_name in texture_types:
|
||||
new_image_name = f"Atlas_{type_name}_{context.scene.name}_{Path(bpy.data.filepath).stem}"
|
||||
logger.debug(f"Processing {type_name} atlas image")
|
||||
|
||||
if new_image_name in bpy.data.images:
|
||||
bpy.data.images.remove(bpy.data.images[new_image_name])
|
||||
|
||||
canvas = bpy.data.images.new(name=new_image_name, width=int(size[0]),
|
||||
height=int(size[1]), alpha=True)
|
||||
c_w = canvas.size[0]
|
||||
canvas_pixels = list(canvas.pixels[:])
|
||||
|
||||
for mat in mat_images:
|
||||
x, y = int(mat.fit.x), int(mat.fit.y)
|
||||
w, h = int(mat.albedo.size[0]), int(mat.albedo.size[1])
|
||||
image_var = getattr(mat, type_name)
|
||||
image_pixels = list(image_var.pixels[:])
|
||||
|
||||
for k in range(h):
|
||||
for i in range(w):
|
||||
for channel in range(4):
|
||||
canvas_pixels[int((((k+y)*c_w)+(i+x))*4)+channel] = \
|
||||
image_pixels[int(((k*w)+i)*4)+channel]
|
||||
|
||||
canvas.pixels[:] = canvas_pixels[:]
|
||||
canvas.save(filepath=os.path.join(os.path.dirname(bpy.data.filepath),
|
||||
new_image_name+".png"))
|
||||
setattr(atlased_mat, type_name, canvas)
|
||||
progress.step(f"Created {type_name} atlas")
|
||||
|
||||
# Create material nodes
|
||||
atlased_mat.material = bpy.data.materials.new(
|
||||
name=f"Atlas_Final_{context.scene.name}_{Path(bpy.data.filepath).stem}")
|
||||
atlased_mat.material.use_nodes = True
|
||||
atlased_mat.material.node_tree.nodes.clear()
|
||||
|
||||
principled_node = atlased_mat.material.node_tree.nodes.new(type="ShaderNodeBsdfPrincipled")
|
||||
principled_node.location.x = 7.29706335067749
|
||||
principled_node.location.y = 298.918212890625
|
||||
|
||||
output_node = atlased_mat.material.node_tree.nodes.new(type="ShaderNodeOutputMaterial")
|
||||
output_node.location.x = 297.29705810546875
|
||||
output_node.location.y = 298.918212890625
|
||||
|
||||
albedo_node = atlased_mat.material.node_tree.nodes.new(type="ShaderNodeTexImage")
|
||||
albedo_node.location.x = -588.6177978515625
|
||||
albedo_node.location.y = 414.1948547363281
|
||||
albedo_node.image = atlased_mat.albedo
|
||||
|
||||
emission_node = atlased_mat.material.node_tree.nodes.new(type="ShaderNodeTexImage")
|
||||
emission_node.location.x = -588.6177978515625
|
||||
emission_node.location.y = -173.9259033203125
|
||||
emission_node.image = atlased_mat.emission
|
||||
|
||||
normal_node = atlased_mat.material.node_tree.nodes.new(type="ShaderNodeTexImage")
|
||||
normal_node.location.x = -941.4189453125
|
||||
normal_node.location.y = -20.8391780853271
|
||||
normal_node.image = atlased_mat.normal
|
||||
|
||||
normal_map_node = atlased_mat.material.node_tree.nodes.new(type="ShaderNodeNormalMap")
|
||||
normal_map_node.location.x = -545.550537109375
|
||||
normal_map_node.location.y = -0.7543716430664062
|
||||
|
||||
roughness_node = atlased_mat.material.node_tree.nodes.new(type="ShaderNodeTexImage")
|
||||
roughness_node.location.x = -592.1703491210938
|
||||
roughness_node.location.y = 206.74075317382812
|
||||
roughness_node.image = atlased_mat.roughness
|
||||
|
||||
ambient_occlusion_node = atlased_mat.material.node_tree.nodes.new(type="ShaderNodeTexImage")
|
||||
ambient_occlusion_node.location.x = -906.4371337890625
|
||||
ambient_occlusion_node.location.y = -389.9602355957031
|
||||
ambient_occlusion_node.image = atlased_mat.ambient_occlusion
|
||||
|
||||
height_node = atlased_mat.material.node_tree.nodes.new(type="ShaderNodeTexImage")
|
||||
height_node.location.x = -1222.383056640625
|
||||
height_node.location.y = -375.48406982421875
|
||||
height_node.image = atlased_mat.height
|
||||
|
||||
atlased_mat.material.node_tree.links.new(principled_node.inputs["Base Color"], albedo_node.outputs["Color"])
|
||||
atlased_mat.material.node_tree.links.new(principled_node.inputs["Metallic"], roughness_node.outputs["Alpha"])
|
||||
atlased_mat.material.node_tree.links.new(principled_node.inputs["Roughness"], roughness_node.outputs["Color"])
|
||||
atlased_mat.material.node_tree.links.new(principled_node.inputs["Alpha"], albedo_node.outputs["Alpha"])
|
||||
atlased_mat.material.node_tree.links.new(principled_node.inputs["Normal"], normal_map_node.outputs["Normal"])
|
||||
atlased_mat.material.node_tree.links.new(principled_node.inputs["Emission Color"], emission_node.outputs["Color"])
|
||||
atlased_mat.material.node_tree.links.new(output_node.inputs["Surface"], principled_node.outputs["BSDF"])
|
||||
atlased_mat.material.node_tree.links.new(normal_map_node.inputs["Color"], normal_node.outputs["Color"])
|
||||
|
||||
# Update materials
|
||||
with ProgressTracker(context, len(context.scene.objects), "Updating Materials") as progress:
|
||||
for obj in context.scene.objects:
|
||||
if obj.type == 'MESH':
|
||||
mesh = obj.data
|
||||
for i, mat_slot in enumerate(obj.material_slots):
|
||||
if mat_slot.material and mat_slot.material.include_in_atlas:
|
||||
mesh.materials[i] = atlased_mat.material
|
||||
progress.step(f"Updated materials for {obj.name}")
|
||||
|
||||
logger.info("Material atlas creation completed successfully")
|
||||
self.report({'INFO'}, t("TextureAtlas.atlas_completed"))
|
||||
return {"FINISHED"}
|
||||
|
||||
except Exception as e:
|
||||
logger.error(f"Error creating material atlas: {str(e)}", exc_info=True)
|
||||
self.report({'ERROR'}, t("TextureAtlas.atlas_error"))
|
||||
raise e
|
||||
Reference in New Issue
Block a user