X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=blender%2Fio_mspgl%2Fmaterial.py;h=a45e881571aea4c0da4b5678f3662eb189863d13;hp=470ffc5784e1d4fd0b28d006dfe720863a172257;hb=HEAD;hpb=736a076cf12aca02492eae6c77eff846bde0cdda diff --git a/blender/io_mspgl/material.py b/blender/io_mspgl/material.py index 470ffc57..b1d2756e 100644 --- a/blender/io_mspgl/material.py +++ b/blender/io_mspgl/material.py @@ -1,55 +1,379 @@ import os -class MaterialMap: - def __init__(self, materials): - self.technique = materials[0].technique - if self.technique: - self.name = "material_map_"+os.path.splitext(self.technique)[0] - else: - self.name = "material_map" - self.materials = materials - self.material_names = [m.name for m in self.materials] - self.srgb_colors = materials[0].srgb_colors - for m in self.materials: - if m.technique!=self.technique: - raise Exception("Conflicting techniques in MaterialMap constructor") - if m.srgb_colors!=self.srgb_colors: - raise Exception("Conflicting colorspace settings in MaterialMap constructor") - - count = len(self.materials) - size = 1 - while size*size*2=count: - self.size = (size, size) +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) + +class PropertyNode: + def __init__(self, node_tree, node, socket): + self.node_tree = node_tree + self.node = node + self.socket = socket + self.type = None + self.data = None + self.input = None + + checks = [self.check_group, + self.check_scale, + self.check_tint, + self.check_gray, + self.check_extract, + self.check_normal, + self.check_invert_channels, + self.check_additive_blend, + self.check_texture] + for c in checks: + if c(): + break + + def set_input_from_linked(self, input_sock): + from .util import get_linked_node_and_socket + + from_node, from_sock = get_linked_node_and_socket(self.node_tree, input_sock) + self.input = PropertyNode(self.node_tree, from_node, from_sock) + return self.input + + def check_group(self): + if self.node.type!='GROUP': + return + + from .util import get_linked_node_and_socket + + output = self.node.node_tree.nodes["Group Output"] + from_node, from_sock = get_linked_node_and_socket(self.node.node_tree, output.inputs[0]) + inner = PropertyNode(self.node.node_tree, from_node, from_sock) + if inner.input: + # TODO This currently only supports a single operation inside the group + if inner.input.node.type=='GROUP_INPUT': + self.type = inner.type + self.data = inner.data + return self.set_input_from_linked(self.node.inputs[0]) + + def check_scale(self): + if self.node.type!='MATH': + return + + if self.node.operation=='MULTIPLY': + for i in range(2): + if not self.node.inputs[i].is_linked: + self.type = 'SCALE' + self.data = self.node.inputs[i].default_value + return self.set_input_from_linked(self.node.inputs[1-i]) + + def check_tint(self): + if self.node.type!='MIX_RGB': + return + + if self.node.blend_type=='MULTIPLY': + for i in range(2): + if not self.node.inputs[1+i].is_linked: + self.type = 'TINT' + self.data = self.node.inputs[1+i].default_value[:] + return self.set_input_from_linked(self.node.inputs[2-i]) + + def check_gray(self): + if self.node.type=='RGBTOBW': + self.type = 'GRAY' + self.set_input_from_linked(self.node.inputs["Color"]) + + def check_extract(self): + if self.node.type=='SEPRGB': + self.type = 'EXTRACT' + self.data = self.socket.name[0] + return self.set_input_from_linked(self.node.inputs["Image"]) + + def check_normal(self): + if self.node.type=='NORMAL_MAP': + self.type = 'NORMAL' + return self.set_input_from_linked(self.node.inputs["Color"]) + + def check_invert_channels(self): + if self.node.type!='COMBRGB': + return + + from .util import get_linked_node_and_socket + + separate = None + invert_channels = "" + for c in ("R", "G", "B"): + from_node, _ = get_linked_node_and_socket(self.node_tree, self.node.inputs[c]) + if from_node.type=='MATH' and from_node.operation=='SUBTRACT' and not from_node.inputs[0].is_linked and from_node.inputs[0].default_value==1.0: + invert_channels += c + from_node, _ = get_linked_node_and_socket(self.node_tree, from_node.inputs[1]) + + if from_node.type=='SEPRGB' and (separate is None or from_node==separate): + separate = from_node + else: + return + + self.type = 'INVERT' + self.data = invert_channels + + return self.set_input_from_linked(separate.inputs["Image"]) + + def check_additive_blend(self): + if self.node.type=='ADD_SHADER': + from .util import get_linked_node_and_socket + + for i in range(2): + shader, _ = get_linked_node_and_socket(self.node_tree, self.node.inputs[i]) + if shader.type=='BSDF_TRANSPARENT': + self.type = 'ADDITIVE' + return self.set_input_from_linked(self.node.inputs[1-i]) + + def check_texture(self): + if self.node.type=='TEX_IMAGE': + self.type = 'TEXTURE' + +def get_unlit_inputs(node_tree, node, additive): + from .util import get_linked_node_and_socket + + if 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) + +def get_splat_layers(node_tree, node): + from .util import get_linked_node_and_socket + + if node.type!='MIX_SHADER': + return + + layers = [] + while True: + factor_from, factor_sock = get_linked_node_and_socket(node_tree, node.inputs["Fac"]) + if factor_from.type!='SEPRGB': + return + + factor_from, _ = get_linked_node_and_socket(node_tree, factor_from.inputs["Image"]) + if factor_from.type!='VERTEX_COLOR': + return + + shader1, _ = get_linked_node_and_socket(node_tree, node.inputs[1]) + shader2, _ = get_linked_node_and_socket(node_tree, node.inputs[2]) + layers.append((shader2, factor_from.layer_name, factor_sock.name[0])) + if shader1.type=='MIX_SHADER': + node = shader1 else: - self.size = (size*2, size) + layers.append((shader1, None, None)) + break + + return layers + +class MaterialProperty: + def __init__(self, keyword, tex_keyword, value): + self.keyword = keyword + self.tex_keyword = tex_keyword + self.value = value + self.texture = None + self.tex_channels = None + self.scale = 1.0 + self.tint = None + + def set_from_input(self, node_tree, input_socket, alpha_socket=None): + 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.value = input_socket.default_value[:len(self.value)] + else: + self.value = input_socket.default_value + + if self.tex_keyword: + from .util import get_linked_node_and_socket + + from_node, from_sock = get_linked_node_and_socket(node_tree, input_socket) + alpha_from = None + if from_node: + channels = None + top_node = PropertyNode(node_tree, from_node, from_sock) + n = top_node + while n: + if n.type=='NORMAL': + channels = ['R', 'G', 'B'] + elif n.type=='GRAY': + channels = ['Y'] + elif n.type=='EXTRACT': + channels = [n.data] + elif n.type=='INVERT': + channels = ['~'+c if c in n.data else c for c in channels] + elif n.type=='SCALE': + self.scale = n.data + elif n.type=='TINT': + self.tint = n.data + elif n.type=='TEXTURE': + self.texture = n.node + n = n.input + + if alpha_socket: + alpha_from, _ = get_linked_node_and_socket(node_tree, alpha_socket) + if alpha_from and alpha_from!=self.texture: + raise Exception("Separate textures for color and alpha are not supported") + + if self.scale==0.0 and self.keyword and type(self.value)!=tuple: + self.texture = None + self.value = self.scale + elif self.scale!=1.0: + raise Exception("Unsupported material property scale {}".format(self.scale)) + elif self.texture: + 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 SubMaterial: + def __init__(self): + self.properties = [] + self.weight_source = (None, None) - from .util import get_colormap +class Material: + def __init__(self, material): + self.name = material.name + self.type = None + self.properties = [] + self.sub_materials = [] + self.array_storage = {} - cm = get_colormap(self.srgb_colors) - self.diffuse_data = "" - for m in self.materials: - diff = [int(cm(c)*255) for c in m.diffuse_color] - self.diffuse_data += "\\x{:02X}\\x{:02X}\\x{:02X}\\xFF".format(*diff) - self.diffuse_data += "\\x00\\x00\\x00\\x00"*(self.size[0]*self.size[1]-count) + self.render_mode = material.render_mode + self.technique = material.technique + self.render_methods = material.render_methods[:] + self.uniforms = material.uniforms[:] + self.face_cull = 'BACK' if material.use_backface_culling else 'NONE' + 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.alpha_cutoff = material.alpha_threshold if material.blend_method=='CLIP' else 0.0 + self.image_based_lighting = material.image_based_lighting + self.instancing = material.instancing - def get_material_uv(self, material): - index = self.material_names.index(material.name) - x = index%self.size[0] - y = index//self.size[0] - return ((x+0.5)/self.size[0], (y+0.5)/self.size[1]) + if self.render_mode=='EXTERNAL' and not self.technique: + 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)) -def create_material_map(context, material): - if not material.material_map: - raise Exception("Material is not part of a material map") + out_node = next((n for n in material.node_tree.nodes if n.type=='OUTPUT_MATERIAL'), None) + if not out_node: + raise Exception("No output node found on material {}".format(self.name)) - tech = material.technique - materials = [] - for m in context.blend_data.materials: - if m.material_map and m.technique==tech: - materials.append(m) + from .util import get_linked_node_and_socket + + from_node, from_sock = get_linked_node_and_socket(material.node_tree, out_node.inputs["Surface"]) + if not from_node: + if self.render_mode=='BUILTIN': + raise Exception("Invalid configuration on material {}: Empty material with builtin rendering".format(self.name)) + return + + surface_node = PropertyNode(material.node_tree, from_node, from_sock) + if surface_node.type=='ADDITIVE': + self.blend_type = 'ADDITIVE' + from_node = surface_node.input.node + + if from_node.type=='BSDF_PRINCIPLED': + self.type = "pbr" + self.init_pbr_properties(material.node_tree, from_node) + elif from_node.type=='EMISSION' or from_node.type=='MIX_SHADER': + splat_layers = get_splat_layers(material.node_tree, from_node) + if splat_layers: + for s in splat_layers: + if s[0].type!='BSDF_PRINCIPLED': + raise Exception("Unsupported splat layer type {} on splat material {}".format(s[0].type, self.name)) + + from .texture import Texture + + self.type = "splat" + self.sub_materials = [] + for l in splat_layers: + self.init_pbr_properties(material.node_tree, l[0]) + sub = SubMaterial() + sub.properties = self.properties + sub.weight_source = l[1:] + self.sub_materials.append(sub) + self.properties = [] + + for p in sub.properties: + if p.texture: + texture = Texture(p.texture, p.tex_channels) + storage = (texture.pixelformat, texture.width, texture.height) + existing = self.array_storage.setdefault(p.tex_keyword, storage) + if storage!=existing: + raise Exception("Inconsistent storage for {} on splat material {}".format(p.tex_keyword, self.name)) + else: + color_input, alpha_input = get_unlit_inputs(material.node_tree, from_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(from_node.type, self.name)) + + sampler_settings = None + for p in self.properties: + if p.texture: + 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("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 - mat_map = MaterialMap(materials) + def init_pbr_properties(self, node_tree, from_node): + base_color = self.create_property("base_color", (0.8, 0.8, 0.8, 1.0)) + tint = self.create_property("tint", (1.0, 1.0, 1.0, 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)) - return mat_map + base_color.set_from_input(node_tree, from_node.inputs["Base Color"], from_node.inputs["Alpha"]) + if base_color.tint: + tint.value = base_color.tint + metalness.set_from_input(node_tree, from_node.inputs["Metallic"]) + roughness.set_from_input(node_tree, from_node.inputs["Roughness"]) + normal.set_from_input(node_tree, from_node.inputs["Normal"]) + emission.set_from_input(node_tree, from_node.inputs["Emission"])