X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=blender%2Fio_mspgl%2Fmaterial.py;h=e92aee2f3e55303c0ddc25461316221e865c7df1;hp=3b79036181d0d45ab6af0da226ef39cecb59e2d6;hb=74a5bc6159d2c753786a5ef6bf785263cd0538f1;hpb=63f2a2ab4e13392b3add0cefcb65c193451ee4d3 diff --git a/blender/io_mspgl/material.py b/blender/io_mspgl/material.py index 3b790361..e92aee2f 100644 --- a/blender/io_mspgl/material.py +++ b/blender/io_mspgl/material.py @@ -1,124 +1,330 @@ 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) + +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_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_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) 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 + self.scale = 1.0 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, 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=='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 Material: def __init__(self, material): self.name = material.name self.type = None - self.properties = {} + 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.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 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: + 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("Empty material can't use builtin rendering mode") + raise Exception("Invalid configuration on material {}: Empty material with builtin rendering".format(self.name)) return - elif surface_node.type!='BSDF_PRINCIPLED': - raise Exception("Unsupported surface node type "+surface_node.type) - self.type = "pbr" + 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" - 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 = 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"]) + base_color.set_from_input(material.node_tree, from_node.inputs["Base Color"], from_node.inputs["Alpha"]) + metalness.set_from_input(material.node_tree, from_node.inputs["Metallic"]) + roughness.set_from_input(material.node_tree, from_node.inputs["Roughness"]) + normal.set_from_input(material.node_tree, from_node.inputs["Normal"]) + emission.set_from_input(material.node_tree, from_node.inputs["Emission"]) + elif from_node.type=='EMISSION' or from_node.type=='MIX_SHADER': + 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.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 @@ -135,7 +341,7 @@ class MaterialMap: 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) @@ -146,16 +352,14 @@ class MaterialMap: 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)