X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=blender%2Fio_mspgl%2Fmaterial.py;h=842261303ddb01c0ea412fc5e5bde2a6f3b6973f;hb=02748ad414e4d209189a1fbf99ddc370cc39b418;hp=73f33d5c29a669eccdb235e0823dea95a1086209;hpb=2680cc0bf251db566753dbe9bf947ba6a4b083d2;p=libs%2Fgl.git diff --git a/blender/io_mspgl/material.py b/blender/io_mspgl/material.py index 73f33d5c..84226130 100644 --- a/blender/io_mspgl/material.py +++ b/blender/io_mspgl/material.py @@ -8,43 +8,100 @@ def compute_render_method_hash(material): descr += "{}={}".format(m.tag, m.shader) return hash(descr) -def check_group(node_tree, group, func): - from .util import get_linked_node_and_socket +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_gray, + 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 - 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]) + 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_gray(self): + if self.node.type=='RGBTOBW': + self.type = 'GRAY' + self.set_input_from_linked(self.node.inputs["Color"]) + + 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 - 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) + from .util import get_linked_node_and_socket - return get_linked_node_and_socket(node_tree, red.inputs["Image"]) + 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]) -def get_unlit_inputs(node_tree, node): - if node.type=='GROUP': - return check_group(node_tree, node, get_unlit_inputs) - elif node.type=='MIX_SHADER': - from .util import get_linked_node_and_socket + 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': @@ -55,7 +112,17 @@ def get_unlit_inputs(node_tree, node): if factor_from==color_from: return (color_input, factor_input) elif node.type=='EMISSION': - return (node.inputs["Color"], None) + 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: @@ -64,8 +131,7 @@ 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 def set_from_input(self, node_tree, input_socket, alpha_socket=None): if self.keyword: @@ -80,35 +146,37 @@ 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=='INVERT': + channels = ['~'+c if c in n.data else c for c in channels] + 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.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) @@ -124,6 +192,7 @@ class Material: 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: @@ -142,7 +211,13 @@ class Material: 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': + + 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)) @@ -157,7 +232,7 @@ class Material: 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) + 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)) @@ -166,6 +241,8 @@ class Material: 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(surface_node.type, self.name))