X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=blender%2Fio_mspgl%2Fmaterial.py;h=ff145515db5febe6cdf1a518237e5a7d186d1e77;hp=7299e636ea7a6e2682dd52dd4051e64df72b505b;hb=f2d504006ec97c7d84e8059c48f5a37e005ece5f;hpb=6b9338845dfee441cd18ad6c633e4feef8ad14e1 diff --git a/blender/io_mspgl/material.py b/blender/io_mspgl/material.py index 7299e636..ff145515 100644 --- a/blender/io_mspgl/material.py +++ b/blender/io_mspgl/material.py @@ -1,35 +1,148 @@ import os -def check_group(node_tree, group, func): - from .util import get_linked_node_and_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 - 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) + 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_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) + def check_group(self): + if self.node.type!='GROUP': + return - from .util import get_linked_node_and_socket + 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]) - green, g_sock = 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, g_sock = get_linked_node_and_socket(node_tree, green.inputs[1]) + if from_node.type=='SEPRGB' and (separate is None or from_node==separate): + separate = from_node + else: + return - red, r_sock = get_linked_node_and_socket(node_tree, node.inputs["R"]) - blue, b_sock = 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) + self.type = 'INVERT' + self.data = invert_channels - return get_linked_node_and_socket(node_tree, red.inputs["Image"]) + 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, keyword, tex_keyword, value): @@ -37,8 +150,8 @@ class MaterialProperty: self.tex_keyword = tex_keyword self.value = value self.texture = None - self.tex_usage = None - self.invert_green = False + self.tex_channels = None + self.scale = 1.0 def set_from_input(self, node_tree, input_socket, alpha_socket=None): if self.keyword: @@ -53,35 +166,46 @@ class MaterialProperty: if self.tex_keyword: from .util import get_linked_node_and_socket - from_node, _ = get_linked_node_and_socket(node_tree, input_socket) + from_node, from_sock = get_linked_node_and_socket(node_tree, input_socket) alpha_from = None if from_node: - usage = 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) - if invert: - from_node = invert - self.invert_green = True - usage = 'RGB' - elif from_node.type=='RGBTOBW': - from_node, _ = get_linked_node_and_socket(node_tree, from_node.inputs["Color"]) + 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!=from_node: + if alpha_from and alpha_from!=self.texture: raise Exception("Separate textures for color and alpha are not supported") - if from_node.type=='TEX_IMAGE': - self.texture = from_node - if usage: - self.tex_usage = usage + 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_usage = 'RGBA' + self.tex_channels = ['R', 'G', 'B', 'A'] elif type(self.value)==tuple: - self.tex_usage = 'RGB' + self.tex_channels = ['R', 'G', 'B'] else: - self.tex_usage = 'GRAY' + self.tex_channels = ['Y'] else: raise Exception("Unsupported property input node type "+from_node.type) @@ -93,15 +217,19 @@ class Material: 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("Invalid configuration on material {}: No technique for external rendering".format(self.name)) - elif self.render_mode=='CUSTOM' and not self.shader: - raise Exception("Invalid configuration on material {}: No shader for custom 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: @@ -109,12 +237,18 @@ class Material: 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("Invalid configuration on material {}: Empty material with builtin rendering".format(self.name)) return - elif surface_node.type=='BSDF_PRINCIPLED': + + 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.create_property("base_color", (0.8, 0.8, 0.8, 1.0)) @@ -123,24 +257,30 @@ class Material: 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': + 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, surface_node.inputs["Color"]) + 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)) + 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.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: @@ -156,65 +296,3 @@ class Material: 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 atlas with external render mode does not make sense") - - self.shader = materials[0].shader - if self.shader: - self.name = "material_atlas_"+os.path.splitext(self.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] - for m in self.materials: - if m.render_mode!=self.render_mode: - raise Exception("Conflicting render modes in MaterialAtlas constructor") - if self.render_mode=='CUSTOM' and m.shader!=self.shader: - 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 - while size*size*2=count: - self.size = (size, size) - else: - self.size = (size*2, size) - - from .util import get_colormap - - cm = get_colormap(True) - 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 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) - - 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]) - -def create_material_atlas(context, material): - if not material.material_atlas: - raise Exception("Material is not part of a material atlas") - - shader = material.shader - materials = [] - for m in context.blend_data.materials: - if m.material_atlas and m.shader==shader: - materials.append(m) - - return MaterialAtlas(materials)