X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=blender%2Fio_mspgl%2Fmaterial.py;h=93f177908b4b6ede25de2a24b2e1f7d8fc1d5246;hp=a45e881571aea4c0da4b5678f3662eb189863d13;hb=c3ebbcb56c1ca9bb3022a7f49aab1da5e09150ba;hpb=d5a302ff5a27018c2cda8ecc60840d5f72ee4e33 diff --git a/blender/io_mspgl/material.py b/blender/io_mspgl/material.py index a45e8815..93f17790 100644 --- a/blender/io_mspgl/material.py +++ b/blender/io_mspgl/material.py @@ -1,19 +1,147 @@ import os -class MaterialMap: +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) + return (None, None) + +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_usage = 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_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"]) + elif from_node.type=='RGBTOBW': + 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' + else: + self.tex_usage = 'GRAY' + 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.render_mode = material.render_mode + self.technique = material.technique + self.shader = material.shader + + 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 + + if not out_node: + raise Exception("No material output node found") + + surface_node, _ = get_linked_node_and_socket(material.node_tree, out_node.inputs["Surface"]) + if not surface_node: + if self.render_mode=='BUILTIN': + raise Exception("Empty material can't use builtin rendering mode") + return + elif 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': + 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"]) + else: + raise Exception("Unsupported surface node type "+surface_node.type) + + 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) + if sampler_settings is None: + sampler_settings = settings + elif settings!=sampler_settings: + raise Exception("Conflicting sampler settings in material textures") + + 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.technique = materials[0].technique - if self.technique: - self.name = "material_map_"+os.path.splitext(self.technique)[0] + 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_map" + self.name = "material_atlas" self.materials = materials - self.srgb_colors = materials[0].srgb_colors + self.material_names = [m.name for m in self.materials] 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") + 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") count = len(self.materials) size = 1 @@ -26,29 +154,31 @@ class MaterialMap: from .util import get_colormap - 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*m.diffuse_intensity] - self.diffuse_data += "\\x{:02X}\\x{:02X}\\x{:02X}\\x{:02X}".format(*diff, int(m.ambient*255)) - self.diffuse_data += "\\x00\\x00\\x00\\x00"*(self.size[0]*self.size[1]-count) + 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.materials.index(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_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 + shader = material.shader materials = [] for m in context.blend_data.materials: - if m.material_map and m.technique==tech: + if m.material_atlas and m.shader==shader: materials.append(m) - mat_map = MaterialMap(materials) + mat_map = MaterialAtlas(materials) return mat_map