import os
-def get_linked_node_and_socket(node_tree, socket):
- for l in node_tree.links:
- if socket==l.to_socket:
- return (l.from_node, l.from_socket)
- elif socket==l.from_socket:
- return (l.to_node, l.to_socket)
+def compute_render_method_hash(material):
+ descr = ""
+ for m in material.render_methods:
+ if descr:
+ descr += ","
+ descr += "{}={}".format(m.tag, m.shader)
+ return hash(descr)
+
+def check_group(node_tree, group, func):
+ from .util import get_linked_node_and_socket
+
+ output = group.node_tree.nodes["Group Output"]
+ from_node, _ = get_linked_node_and_socket(group.node_tree, output.inputs[0])
+ if from_node:
+ from_node, _ = func(group.node_tree, from_node)
+ if from_node and from_node.type=='GROUP_INPUT':
+ return get_linked_node_and_socket(node_tree, group.inputs[0])
+ return (None, None)
+
+def check_invert_green(node_tree, node):
+ if node.type=='GROUP':
+ return check_group(node_tree, node, check_invert_green)
+ elif node.type!='COMBRGB':
+ return (None, None)
+
+ from .util import get_linked_node_and_socket
+
+ green, _ = get_linked_node_and_socket(node_tree, node.inputs["G"])
+ if not green or green.type!='MATH' or green.operation!='SUBTRACT':
+ return (None, None)
+ green, _ = get_linked_node_and_socket(node_tree, green.inputs[1])
+
+ red, _ = get_linked_node_and_socket(node_tree, node.inputs["R"])
+ blue, _ = get_linked_node_and_socket(node_tree, node.inputs["B"])
+ if not red or red.type!='SEPRGB' or blue!=red or green!=red:
+ return (None, None)
+
+ return get_linked_node_and_socket(node_tree, red.inputs["Image"])
+
+def check_additive_blend(node_tree, node):
+ if node.type=='GROUP':
+ return check_group(node_tree, node, check_additive_blend)
+ elif node.type=='ADD_SHADER':
+ from .util import get_linked_node_and_socket
+
+ shader1, _ = get_linked_node_and_socket(node_tree, node.inputs[0])
+ shader2, _ = get_linked_node_and_socket(node_tree, node.inputs[1])
+ if shader1.type=='BSDF_TRANSPARENT':
+ return get_linked_node_and_socket(node_tree, node.inputs[1])
+ elif shader2.type=='BSDF_TRANSPARENT':
+ return get_linked_node_and_socket(node_tree, node.inputs[0])
+
+ return (None, None)
+
+def get_unlit_inputs(node_tree, node, additive):
+ from .util import get_linked_node_and_socket
+
+ if node.type=='GROUP':
+ return check_group(node_tree, node, get_unlit_inputs)
+ elif node.type=='MIX_SHADER' and not additive:
+ shader1, _ = get_linked_node_and_socket(node_tree, node.inputs[1])
+ shader2, _ = get_linked_node_and_socket(node_tree, node.inputs[2])
+ if shader1.type=='BSDF_TRANSPARENT' and shader2.type=='EMISSION':
+ factor_input = node.inputs["Fac"]
+ factor_from, _ = get_linked_node_and_socket(node_tree, factor_input)
+ color_input = shader2.inputs["Color"]
+ color_from, _ = get_linked_node_and_socket(node_tree, color_input)
+ if factor_from==color_from:
+ return (color_input, factor_input)
+ elif node.type=='EMISSION':
+ color_input = node.inputs["Color"]
+ if additive:
+ color_from, _ = get_linked_node_and_socket(node_tree, color_input)
+ if color_from.type=='MIX_RGB' and color_from.blend_type=='MIX':
+ mix_factor_input = color_from.inputs["Fac"]
+ mix_factor_from, _ = get_linked_node_and_socket(node_tree, mix_factor_input)
+ mix_color_input = color_from.inputs["Color2"]
+ mix_color_from, _ = get_linked_node_and_socket(node_tree, mix_color_input)
+ if mix_factor_from==mix_color_from:
+ return (mix_color_input, mix_factor_input)
+ return (color_input, None)
return (None, None)
class MaterialProperty:
- def __init__(self, value):
+ def __init__(self, keyword, tex_keyword, value):
+ self.keyword = keyword
+ self.tex_keyword = tex_keyword
self.value = value
self.texture = None
- self.tex_usage = None
+ self.tex_channels = None
def set_from_input(self, node_tree, input_socket, alpha_socket=None):
- if type(self.value)==tuple:
- if alpha_socket:
- self.value = input_socket.default_value[:len(self.value)-1]+(alpha_socket.default_value,)
- else:
- self.value = input_socket.default_value[:len(self.value)]
- elif self.value is not None:
- self.value = input_socket.default_value
-
- from_node, _ = get_linked_node_and_socket(node_tree, input_socket)
- alpha_from = None
- if from_node:
- if from_node.type=='NORMAL_MAP':
- from_node, _ = get_linked_node_and_socket(node_tree, from_node.inputs["Color"])
-
- if alpha_socket:
- alpha_from, _ = get_linked_node_and_socket(node_tree, alpha_socket)
- if alpha_from and alpha_from!=from_node:
- raise Exception("Separate textures for color and alpha are not supported")
-
- if from_node.type=='TEX_IMAGE':
- self.texture = from_node
- if alpha_from:
- self.tex_usage = 'RGBA'
- elif type(self.value)==tuple:
- self.tex_usage = 'RGB'
+ if self.keyword:
+ if type(self.value)==tuple:
+ if alpha_socket:
+ self.value = input_socket.default_value[:len(self.value)-1]+(alpha_socket.default_value,)
else:
- self.tex_usage = 'GRAY'
+ self.value = input_socket.default_value[:len(self.value)]
else:
- raise Exception("Unsupported property input node type "+from_node.type)
+ self.value = input_socket.default_value
+
+ if self.tex_keyword:
+ from .util import get_linked_node_and_socket
+
+ from_node, _ = get_linked_node_and_socket(node_tree, input_socket)
+ alpha_from = None
+ if from_node:
+ channels = None
+ if from_node.type=='NORMAL_MAP':
+ from_node, _ = get_linked_node_and_socket(node_tree, from_node.inputs["Color"])
+ invert, _ = check_invert_green(node_tree, from_node)
+ channels = ['R', 'G', 'B']
+ if invert:
+ from_node = invert
+ channels[1] = '~G';
+ elif from_node.type=='RGBTOBW':
+ from_node, _ = get_linked_node_and_socket(node_tree, from_node.inputs["Color"])
+ channels = ['Y']
+
+ if alpha_socket:
+ alpha_from, _ = get_linked_node_and_socket(node_tree, alpha_socket)
+ if alpha_from and alpha_from!=from_node:
+ raise Exception("Separate textures for color and alpha are not supported")
+
+ if from_node.type=='TEX_IMAGE':
+ self.texture = from_node
+ if channels:
+ self.tex_channels = channels
+ elif alpha_from:
+ self.tex_channels = ['R', 'G', 'B', 'A']
+ elif type(self.value)==tuple:
+ self.tex_channels = ['R', 'G', 'B']
+ else:
+ self.tex_channels = ['Y']
+ else:
+ raise Exception("Unsupported property input node type "+from_node.type)
class Material:
def __init__(self, material):
self.name = material.name
- self.properties = {}
+ self.type = None
+ self.properties = []
self.render_mode = material.render_mode
self.technique = material.technique
- self.shader = material.shader
+ self.render_methods = material.render_methods[:]
+ self.uniforms = material.uniforms[:]
+ self.receive_shadows = material.receive_shadows
+ self.cast_shadows = (material.shadow_method!='NONE')
+ self.blend_type = 'ALPHA' if material.blend_method=='BLEND' else 'NONE'
+ self.image_based_lighting = material.image_based_lighting
if self.render_mode=='EXTERNAL' and not self.technique:
- raise Exception("Missing technique with external rendering mode")
- elif self.render_mode=='CUSTOM' and not self.shader:
- raise Exception("Missing shader with custom rendering mode")
-
- out_node = None
- for n in material.node_tree.nodes:
- if n.type=='OUTPUT_MATERIAL':
- out_node = n
- break
+ raise Exception("Invalid configuration on material {}: No technique for external rendering".format(self.name))
+ elif self.render_mode=='CUSTOM' and not self.render_methods:
+ raise Exception("Invalid configuration on material {}: No render methods for custom rendering".format(self.name))
+ out_node = next((n for n in material.node_tree.nodes if n.type=='OUTPUT_MATERIAL'), None)
if not out_node:
- raise Exception("No material output node found")
+ raise Exception("No output node found on material {}".format(self.name))
+
+ from .util import get_linked_node_and_socket
surface_node, _ = get_linked_node_and_socket(material.node_tree, out_node.inputs["Surface"])
if not surface_node:
- raise Exception("Material has no surface node")
- elif surface_node.type!='BSDF_PRINCIPLED':
- raise Exception("Unsupported surface node type "+surface_node.type)
-
- base_color = self.properties["base_color"] = MaterialProperty((0.8, 0.8, 0.8, 1.0))
- metalness = self.properties["metalness"] = MaterialProperty(0.0)
- roughness = self.properties["roughness"] = MaterialProperty(0.5)
- normal = self.properties["normal"] = MaterialProperty(None)
- emission = self.properties["emission"] = MaterialProperty((0.0, 0.0, 0.0))
-
- base_color.set_from_input(material.node_tree, surface_node.inputs["Base Color"], surface_node.inputs["Alpha"])
- metalness.set_from_input(material.node_tree, surface_node.inputs["Metallic"])
- roughness.set_from_input(material.node_tree, surface_node.inputs["Roughness"])
- normal.set_from_input(material.node_tree, surface_node.inputs["Normal"])
- emission.set_from_input(material.node_tree, surface_node.inputs["Emission"])
+ if self.render_mode=='BUILTIN':
+ raise Exception("Invalid configuration on material {}: Empty material with builtin rendering".format(self.name))
+ return
+
+ additive_node, _ = check_additive_blend(material.node_tree, surface_node)
+ if additive_node:
+ self.blend_type = 'ADDITIVE'
+ surface_node = additive_node
+
+ if surface_node.type=='BSDF_PRINCIPLED':
+ self.type = "pbr"
+
+ base_color = self.create_property("base_color", (0.8, 0.8, 0.8, 1.0))
+ metalness = self.create_property("metalness", 0.0)
+ roughness = self.create_property("roughness", 0.5)
+ normal = self.create_property("normal_map")
+ emission = self.create_property("emission", (0.0, 0.0, 0.0))
+
+ base_color.set_from_input(material.node_tree, surface_node.inputs["Base Color"], surface_node.inputs["Alpha"])
+ metalness.set_from_input(material.node_tree, surface_node.inputs["Metallic"])
+ roughness.set_from_input(material.node_tree, surface_node.inputs["Roughness"])
+ normal.set_from_input(material.node_tree, surface_node.inputs["Normal"])
+ emission.set_from_input(material.node_tree, surface_node.inputs["Emission"])
+ elif surface_node.type=='EMISSION' or surface_node.type=='MIX_SHADER':
+ color_input, alpha_input = get_unlit_inputs(material.node_tree, surface_node, self.blend_type=='ADDITIVE')
+ if not color_input:
+ raise Exception("Unsupported configuration for unlit material {}".format(self.name))
+
+ self.type = "unlit"
+
+ color = self.create_property("color", "texture", (1.0, 1.0, 1.0, 1.0))
+
+ color.set_from_input(material.node_tree, color_input, alpha_input)
+ if self.blend_type=='ADDITIVE' and alpha_input:
+ self.blend_type = 'ADDITIVE_ALPHA'
+ else:
+ raise Exception("Unsupported surface node type {} on material {}".format(surface_node.type, self.name))
sampler_settings = None
- for p in self.properties.values():
+ for p in self.properties:
if p.texture:
- settings = (p.texture.default_filter, p.texture.interpolation, p.texture.use_mipmap, p.texture.max_anisotropy)
+ settings = (p.texture.interpolation, p.texture.use_mipmap, p.texture.max_anisotropy)
if sampler_settings is None:
sampler_settings = settings
elif settings!=sampler_settings:
- raise Exception("Conflicting sampler settings in material textures")
+ raise Exception("Material {} has conflicting texture sampler settings".format(self.name))
+
+ def create_property(self, *args):
+ prop = None
+ if len(args)==1:
+ prop = MaterialProperty(None, args[0], None)
+ elif len(args)==2:
+ prop = MaterialProperty(args[0], args[0]+"_map", args[1])
+ else:
+ prop = MaterialProperty(*args)
+ self.properties.append(prop)
+ return prop
-class MaterialMap:
+class MaterialAtlas:
def __init__(self, materials):
self.render_mode = materials[0].render_mode
if self.render_mode=='EXTERNAL':
- raise Exception("Material map with external render mode does not make sense")
+ raise Exception("Material atlas with external render mode does not make sense")
- self.shader = materials[0].shader
- if self.shader:
- self.name = "material_map_"+os.path.splitext(self.shader)[0]
+ if self.render_mode=='CUSTOM':
+ self.render_methods = materials[0].render_methods
else:
- self.name = "material_map"
+ self.render_methods = None
+ if self.render_methods:
+ self.name = "material_atlas_"+os.path.splitext(self.render_methods[0].shader)[0]
+ else:
+ self.name = "material_atlas"
+ self.receive_shadows = materials[0].receive_shadows
+ self.cast_shadows = (materials[0].shadow_method!='NONE')
self.materials = materials
self.material_names = [m.name for m in self.materials]
+ self.uniforms = None
+ method_hash = compute_render_method_hash(self)
for m in self.materials:
if m.render_mode!=self.render_mode:
- raise Exception("Conflicting render modes in MaterialMap constructor")
- if self.render_mode=='CUSTOM' and m.shader!=self.shader:
- raise Exception("Conflicting shaders in MaterialMap constructor")
+ raise Exception("Conflicting render modes in MaterialAtlas constructor")
+ if self.render_mode=='CUSTOM' and compute_render_method_hash(m)!=method_hash:
+ raise Exception("Conflicting shaders in MaterialAtlas constructor")
+ if m.receive_shadows!=self.receive_shadows or m.shadow_method!=materials[0].shadow_method:
+ raise Exception("Conflicting shadow settings in MaterialAtlas constructor")
count = len(self.materials)
size = 1
self.base_color_data = ""
for m in map(Material, self.materials):
if any(p.texture for p in m.properties):
- raise Exception("Texturing is incompatible with material map")
+ raise Exception("Texturing is incompatible with material atlas")
base_color = [int(cm(c)*255) for c in m.base_color.value]
self.base_color_data += "\\x{:02X}\\x{:02X}\\x{:02X}\\xFF".format(*base_color)
self.base_color_data += "\\x00\\x00\\x00\\x00"*(self.size[0]*self.size[1]-count)
y = index//self.size[0]
return ((x+0.5)/self.size[0], (y+0.5)/self.size[1])
-def create_material_map(context, material):
- if not material.material_map:
- raise Exception("Material is not part of a material map")
+def create_material_atlas(context, material):
+ if not material.material_atlas:
+ raise Exception("Material is not part of a material atlas")
- shader = material.shader
+ method_hash = compute_render_method_hash(material)
materials = []
for m in context.blend_data.materials:
- if m.material_map and m.shader==shader:
+ if m.material_atlas and compute_render_method_hash(m)==method_hash:
materials.append(m)
- mat_map = MaterialMap(materials)
-
- return mat_map
+ return MaterialAtlas(materials)
projects / libs / gl.git / blobdiff