X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=blender%2Fio_mspgl%2Fmaterial.py;h=b30a2ef5d90fef6e7ec1aa1337d6fa5002661136;hp=b275caa37f54a92a2a459df8ca9d66d7d12d90d0;hb=1ebae998eb54c3f33900dc76de3b34c2d5252e58;hpb=180b20bee11425a776c5ead05afcf6a63945d3b2 diff --git a/blender/io_mspgl/material.py b/blender/io_mspgl/material.py index b275caa3..b30a2ef5 100644 --- a/blender/io_mspgl/material.py +++ b/blender/io_mspgl/material.py @@ -1,111 +1,256 @@ 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)] - else: - 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.base_color = MaterialProperty((0.8, 0.8, 0.8, 1.0)) - self.metalness = MaterialProperty(0.0) - self.roughness = MaterialProperty(0.5) - self.normal = MaterialProperty((0.0, 0.0, 0.1)) - self.emission = MaterialProperty((0.0, 0.0, 0.0)) + 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) + 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)) - self.base_color.set_from_input(material.node_tree, surface_node.inputs["Base Color"], surface_node.inputs["Alpha"]) - self.metalness.set_from_input(material.node_tree, surface_node.inputs["Metallic"]) - self.roughness.set_from_input(material.node_tree, surface_node.inputs["Roughness"]) - self.normal.set_from_input(material.node_tree, surface_node.inputs["Normal"]) - self.emission.set_from_input(material.node_tree, surface_node.inputs["Emission"]) + 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.properties = (self.base_color, self.metalness, self.roughness, self.normal, self.emission) + self.type = "unlit" + color = self.create_property("color", "texture", (1.0, 1.0, 1.0, 1.0)) -class MaterialMap: + 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: + 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 + + +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 @@ -122,7 +267,7 @@ 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) @@ -133,16 +278,14 @@ 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") - tech = material.technique + method_hash = compute_render_method_hash(material) materials = [] for m in context.blend_data.materials: - if m.material_map and m.technique==tech: + 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)