├── .gitignore ├── LICENSE ├── README.md ├── __init__.py ├── blender_manifest.toml ├── config.py ├── custom_node_eval.py ├── node_eval.py ├── operator.py ├── panel.py └── util.py /.gitignore: -------------------------------------------------------------------------------- 1 | .idea/ 2 | venv/ 3 | 4 | __pycache__/ -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Material Viewport Color from Nodes 2 | 3 | ## Where do I find it? 4 | 5 | Once you have enabled the add-on in your preferences, 6 | you can find its UI and operators in your object's material properties tab. 7 | 8 | ## Operators 9 | 10 | There are multiple operators that you can use to set materials. You can limit its scope to: 11 | - the active material 12 | - the active object 13 | - all selected objects 14 | - all materials in the blend file 15 | 16 | For the active material, you can also tell the add-on to evaluate your currently selected node 17 | instead of from the output node. 18 | 19 | ## How does it work? 20 | For a given material, the add-on starts at the output node 21 | (or the currently selected node, if you choose the "selected node" operator). 22 | From that node, it uses the node type, available node sockets, and a configuration 23 | to determine which sockets to use to evaluate color, metallic, and roughness. 24 | If there is a default value set for that socket, it uses that. 25 | However, if that socket is connected to another node, the add-on traverses the path to the previous node. 26 | 27 | Then the process repeats: check the node type and configuration, and evaluate its sockets. 28 | Once it finds a set value, it ends the traversal and sets it. 29 | 30 | ## Supported Nodes 31 | 32 | The "+" next to it can also retrieve a metallic value from the node. 33 | The "*" next to it means the add-on can also retrieve a roughness value from the node. 34 | 35 | Shader nodes: 36 | - principled +* 37 | - emission 38 | - toon * 39 | - anisotropic * 40 | - diffuse * 41 | - glass * 42 | - glossy * 43 | - hair 44 | - principled hair * 45 | - refraction * 46 | - subsurface scattering 47 | - translucent 48 | - velvet * 49 | 50 | The following are miscellaneous nodes, supported across all three value types. 51 | Note that most of these do not actually evaluate the node itself, 52 | but just check specific node sockets for a set value. 53 | For example, the mix node does not apply the actual blend type to the values - 54 | it simply mixes the two values. 55 | 56 | - RGB 57 | - Value 58 | - Map Range 59 | - Separate color 60 | - Group node 61 | - Brightness/Contrast 62 | - Gamma 63 | - Hue/Saturation/Value 64 | - Invert 65 | - RGB Curve 66 | - Clamp 67 | - Image and environment textures 68 | - Shader to RGB 69 | - Mix 70 | 71 | Don't see the node you want in here? If you feel this node would benefit other users as well, make your case in the GitHub issues tab! 72 | -------------------------------------------------------------------------------- /__init__.py: -------------------------------------------------------------------------------- 1 | # Copyright (C) 2024 Spencer Magnusson 2 | # semagnum@gmail.com 3 | # Created by Spencer Magnusson 4 | # This program is free software: you can redistribute it and/or modify 5 | # it under the terms of the GNU General Public License as published by 6 | # the Free Software Foundation, either version 3 of the License, or 7 | # (at your option) any later version. 8 | # This program is distributed in the hope that it will be useful, 9 | # but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | # GNU General Public License for more details. 12 | # You should have received a copy of the GNU General Public License 13 | # along with this program. If not, see . 14 | 15 | if 'bpy' in locals(): 16 | import importlib 17 | reloadable_modules = [ 18 | 'util', 19 | 'node_eval', 20 | 'custom_node_eval', 21 | 'config', 22 | 'operator', 23 | 'panel' 24 | ] 25 | for module_name in reloadable_modules: 26 | if module_name in locals(): 27 | importlib.reload(locals()[module_name]) 28 | 29 | import bpy 30 | 31 | from . import config, node_eval, custom_node_eval, operator, panel, util 32 | 33 | 34 | 35 | bl_info = { 36 | "name": 'Material Viewport Color from Nodes', 37 | "author": 'Spencer Magnusson', 38 | "version": (0, 1, 4), 39 | "blender": (3, 5, 0), 40 | "description": 'Sets material viewport display attributes based on the node tree', 41 | "location": 'Object Material Properties', 42 | "support": 'COMMUNITY', 43 | "category": 'Material' 44 | } 45 | 46 | addon_classes = [ 47 | operator.AllMaterialsOperator, 48 | operator.ActiveObjectOperator, 49 | operator.SelectedObjectsOperator, 50 | operator.ActiveMaterialOperator, 51 | operator.ActiveMaterialNodeOperator, 52 | panel.CM_PT_ObjectColorFromMaterial, 53 | ] 54 | 55 | 56 | def register(): 57 | """Registers operators and properties.""" 58 | 59 | bpy.types.WindowManager.cfm_analyze_metallic = bpy.props.BoolProperty( 60 | name='Detect Metallic', 61 | description='Detects potential values for viewport material\'s metallic property', 62 | default=True, 63 | ) 64 | bpy.types.WindowManager.cfm_analyze_roughness = bpy.props.BoolProperty( 65 | name='Detect Roughness', 66 | description='Detects potential values for viewport material\'s roughness property', 67 | default=True, 68 | ) 69 | 70 | for cls in addon_classes: 71 | bpy.utils.register_class(cls) 72 | 73 | 74 | def unregister(): 75 | """Unregisters operators and properties.""" 76 | 77 | for cls in addon_classes[::-1]: 78 | bpy.utils.unregister_class(cls) 79 | 80 | del bpy.types.WindowManager.cfm_analyze_metallic 81 | del bpy.types.WindowManager.cfm_analyze_roughness 82 | 83 | 84 | if __name__ == '__main__': 85 | register() 86 | -------------------------------------------------------------------------------- /blender_manifest.toml: -------------------------------------------------------------------------------- 1 | schema_version = "1.0.0" 2 | 3 | # Example of manifest file for a Blender extension 4 | # Change the values according to your extension 5 | id = "ColorFromMaterial" 6 | version = "0.1.4" 7 | name = "Material Viewport Color from Nodes" 8 | tagline = "Convert shader color to viewport color" 9 | maintainer = "Spencer Magnusson " 10 | # Supported types: "add-on", "theme" 11 | type = "add-on" 12 | 13 | # Optional: add-ons can list which resources they will require: 14 | # * "files" (for access of any filesystem operations) 15 | # * "network" (for internet access) 16 | # * "clipboard" (to read and/or write the system clipboard) 17 | # * "camera" (to capture photos and videos) 18 | # * "microphone" (to capture audio) 19 | # permissions = ["files", "network"] 20 | 21 | # Optional link to documentation, support, source files, etc 22 | # website = "http://extensions.blender.org/add-ons/my-example-package/" 23 | 24 | # Optional list defined by Blender and server, see: 25 | # https://docs.blender.org/manual/en/dev/extensions/tags.html 26 | tags = ["Material"] 27 | 28 | blender_version_min = "4.2.0" 29 | # Optional: maximum supported Blender version 30 | # blender_version_max = "5.1.0" 31 | 32 | # License conforming to https://spdx.org/licenses/ (use "SPDX: prefix) 33 | # https://docs.blender.org/manual/en/dev/extensions/licenses.html 34 | license = [ 35 | "SPDX:GPL-3.0-or-later", 36 | ] 37 | # Optional: required by some licenses. 38 | # copyright = [ 39 | # "2002-2024 Developer Name", 40 | # "1998 Company Name", 41 | # ] 42 | 43 | # Optional list of supported platforms. If omitted, the extension will be available in all operating systems. 44 | # platforms = ["windows-amd64", "macos-arm64", "linux-x86_64"] 45 | # Other supported platforms: "windows-arm64", "macos-x86_64" 46 | 47 | # Optional: bundle 3rd party Python modules. 48 | # https://docs.blender.org/manual/en/dev/extensions/python_wheels.html 49 | # wheels = [ 50 | # "./wheels/hexdump-3.3-py3-none-any.whl", 51 | # "./wheels/jsmin-3.0.1-py3-none-any.whl" 52 | # ] 53 | 54 | # Optional: build setting. 55 | # https://docs.blender.org/manual/en/dev/extensions/command_line_arguments.html#command-line-args-extension-build 56 | [build] 57 | paths_exclude_pattern = [ 58 | "/.idea/", 59 | "/.git/", 60 | "/.venv/", 61 | "/venv/", 62 | "__pycache__/" 63 | ] -------------------------------------------------------------------------------- /config.py: -------------------------------------------------------------------------------- 1 | # Copyright (C) 2023 Spencer Magnusson 2 | # semagnum@gmail.com 3 | # Created by Spencer Magnusson 4 | # This program is free software: you can redistribute it and/or modify 5 | # it under the terms of the GNU General Public License as published by 6 | # the Free Software Foundation, either version 3 of the License, or 7 | # (at your option) any later version. 8 | # This program is distributed in the hope that it will be useful, 9 | # but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | # GNU General Public License for more details. 12 | # You should have received a copy of the GNU General Public License 13 | # along with this program. If not, see . 14 | 15 | from . import custom_node_eval as custom 16 | 17 | import bpy 18 | IS_BPY_V3 = bpy.app.version < (4, 0, 0) 19 | 20 | ALPHA_THRESHOLD = 0.7 21 | 22 | FIRST_INPUT = ('inputs', 0) 23 | 24 | UNIVERSAL_MAP = { 25 | 'ShaderNodeRGB': ('outputs', 0), 26 | 'ShaderNodeValue': ('outputs', 0), 27 | 'ShaderNodeMapRange': FIRST_INPUT, 28 | 'ShaderNodeSeparateColor': FIRST_INPUT, 29 | 'NodeGroupOutput': FIRST_INPUT, 30 | 'ShaderNodeOutputMaterial': FIRST_INPUT, 31 | 'ShaderNodeBrightContrast': FIRST_INPUT, 32 | 'ShaderNodeGamma': FIRST_INPUT, 33 | 'ShaderNodeHueSaturation': ('inputs', 4), 34 | 'ShaderNodeInvert': ('inputs', 1), 35 | 'ShaderNodeRGBCurve': ('inputs', 1), 36 | 'ShaderNodeClamp': custom.clamp_node, 37 | 'ShaderNodeTexImage': custom.image_node, 38 | 'ShaderNodeTexEnvironment': custom.image_node, 39 | 'ShaderNodeValToRGB': custom.color_ramp, 40 | 'ShaderNodeMix': custom.mix_node, 41 | } 42 | 43 | ALBEDO_MAP = { 44 | 'ShaderNodeBsdfPrincipled': FIRST_INPUT, 45 | 'ShaderNodeEmission': FIRST_INPUT, 46 | 'ShaderNodeBsdfToon': FIRST_INPUT, 47 | 'ShaderNodeBsdfAnisotropic': FIRST_INPUT, 48 | 'ShaderNodeBsdfDiffuse': FIRST_INPUT, 49 | 'ShaderNodeBsdfGlass': FIRST_INPUT, 50 | 'ShaderNodeBsdfGlossy': FIRST_INPUT, 51 | 'ShaderNodeBsdfHair': FIRST_INPUT, 52 | 'ShaderNodeBsdfHairPrincipled': FIRST_INPUT, 53 | 'ShaderNodeBsdfRefraction': FIRST_INPUT, 54 | 'ShaderNodeSubsurfaceScattering': FIRST_INPUT, 55 | 'ShaderNodeBsdfTranslucent': FIRST_INPUT, 56 | 'ShaderNodeBsdfVelvet': FIRST_INPUT, 57 | 'ShaderNodeBsdfMetallic': FIRST_INPUT, 58 | 'ShaderNodeBsdfRayPortal': FIRST_INPUT, 59 | } 60 | 61 | METALLIC_MAP = { 62 | 'ShaderNodeBsdfPrincipled': ('inputs', 6) if IS_BPY_V3 else ('inputs', 1), 63 | 'ShaderNodeBsdfMetallic': 1.0, 64 | } 65 | 66 | ROUGHNESS_MAP = { 67 | 'ShaderNodeBsdfPrincipled': ('inputs', 9) if IS_BPY_V3 else ('inputs', 2), 68 | 'ShaderNodeBsdfToon': ('inputs', 1), 69 | 'ShaderNodeBsdfAnisotropic': ('inputs', 1), 70 | 'ShaderNodeBsdfDiffuse': ('inputs', 1), 71 | 'ShaderNodeBsdfGlass': ('inputs', 1), 72 | 'ShaderNodeBsdfGlossy': ('inputs', 1), 73 | 'ShaderNodeBsdfHairPrincipled': ('inputs', 5), 74 | 'ShaderNodeBsdfRefraction': ('inputs', 1), 75 | 'ShaderNodeBsdfVelvet': ('inputs', 1), 76 | 'ShaderNodeBsdfMetallic': ('inputs', 4), 77 | } 78 | 79 | ALBEDO_MAP.update(UNIVERSAL_MAP) 80 | METALLIC_MAP.update(UNIVERSAL_MAP) 81 | ROUGHNESS_MAP.update(UNIVERSAL_MAP) 82 | -------------------------------------------------------------------------------- /custom_node_eval.py: -------------------------------------------------------------------------------- 1 | from . import node_eval 2 | 3 | from mathutils import Vector 4 | import numpy as np 5 | 6 | 7 | def color_ramp(*args): 8 | """Calculates the mean RGB in the image, excluding pixels below an alpha threshold. 9 | 10 | :param curr_node: Image-like node 11 | """ 12 | 13 | node, node_key, default_val = args 14 | factor_val = node_eval.assert_float(node_eval.get_from_socket(node.inputs[0], node_key, 0.5)) 15 | return node_eval.assert_color(node.color_ramp.evaluate(factor_val)) 16 | 17 | 18 | def image_node(*args) -> Vector: 19 | """Calculates the mean RGB in the image, excluding pixels below an alpha threshold. 20 | 21 | :param curr_node: Image-like node 22 | """ 23 | curr_node, _, default_val = args 24 | if not hasattr(curr_node, 'image') or curr_node.image is None: 25 | return Vector((1.0, 0.0, 1.0, 1.0)) # typical "cannot find the texture" color 26 | 27 | pixels = np.array(curr_node.image.pixels).reshape(-1, 4) 28 | 29 | # slice the pixels into the RGB channels, filter out transparent pixels, get mean 30 | ch_a = pixels[:, 3] 31 | pixels = pixels[(ch_a >= 0.7)] 32 | pixels = np.delete(pixels, 3, axis=1) 33 | 34 | color_mean = pixels.mean(axis=0) 35 | 36 | if not np.all(np.isfinite(color_mean)): 37 | return default_val 38 | 39 | return Vector(tuple(list(color_mean) + [1.0])) 40 | 41 | 42 | def clamp_node(*args): 43 | node, node_key, default_val = args 44 | 45 | value_socket = node.inputs[0] 46 | min_socket = node.inputs[1] 47 | max_socket = node.inputs[2] 48 | 49 | value_socket_val = node_eval.assert_float(node_eval.get_from_socket(value_socket, node_key, default_val)) 50 | min_socket_val = node_eval.assert_float(node_eval.get_from_socket(min_socket, node_key, 0.0)) 51 | max_socket_val = node_eval.assert_float(node_eval.get_from_socket(max_socket, node_key, 1.0)) 52 | 53 | if node.clamp_type == 'RANGE': 54 | new_min_socket_val = min(min_socket_val, max_socket_val) 55 | new_max_socket_val = max(min_socket_val, max_socket_val) 56 | min_socket_val, max_socket_val = new_min_socket_val, new_max_socket_val 57 | 58 | return min(max(value_socket_val, min_socket_val), max_socket_val) 59 | 60 | 61 | def mix_node(*args) -> Vector: 62 | # We're just going to mix the two socket values based on factor. 63 | node, node_key, default_val = args 64 | 65 | data_type = node.data_type 66 | factor_value = node_eval.assert_float(node_eval.get_from_socket(node.inputs[0], node_key, 0.0)) 67 | 68 | if data_type == 'RGBA': 69 | a_socket = node.inputs[6] 70 | b_socket = node.inputs[7] 71 | elif data_type == 'VECTOR': 72 | a_socket = node.inputs[4] 73 | b_socket = node.inputs[5] 74 | else: 75 | a_socket = node.inputs[2] 76 | b_socket = node.inputs[3] 77 | 78 | a_factor = 1 - factor_value 79 | if data_type == 'FLOAT': 80 | a_val = node_eval.assert_float(node_eval.get_from_socket(node.inputs[2], node_key, default_val)) 81 | b_val = node_eval.assert_float(node_eval.get_from_socket(node.inputs[3], node_key, default_val)) 82 | val = (b_val * factor_value) + (a_val * a_factor) 83 | else: 84 | a_factor = 1 - factor_value 85 | a_val = [v * a_factor 86 | for v in node_eval.assert_color(node_eval.get_from_socket(a_socket, node_key, default_val))] 87 | b_val = [v * factor_value 88 | for v in node_eval.assert_color(node_eval.get_from_socket(b_socket, node_key, default_val))] 89 | val = Vector([a + b for a,b in zip(a_val, b_val)]) 90 | 91 | return val 92 | -------------------------------------------------------------------------------- /node_eval.py: -------------------------------------------------------------------------------- 1 | # Copyright (C) 2023 Spencer Magnusson 2 | # semagnum@gmail.com 3 | # Created by Spencer Magnusson 4 | # This program is free software: you can redistribute it and/or modify 5 | # it under the terms of the GNU General Public License as published by 6 | # the Free Software Foundation, either version 3 of the License, or 7 | # (at your option) any later version. 8 | # This program is distributed in the hope that it will be useful, 9 | # but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | # GNU General Public License for more details. 12 | # You should have received a copy of the GNU General Public License 13 | # along with this program. If not, see . 14 | 15 | import bpy 16 | from mathutils import Vector 17 | 18 | from . import util 19 | 20 | 21 | def assert_float(val) -> float: 22 | try: 23 | _iter_test = iter(val) 24 | except TypeError: 25 | return val 26 | else: # is a color, exclude alpha channel 27 | return max(val[:-1]) 28 | 29 | 30 | def assert_color(val) -> Vector: 31 | try: 32 | _iter_test = iter(val) 33 | except TypeError: 34 | return Vector((val, val, val, 1.0)) 35 | else: 36 | return val 37 | 38 | 39 | def get_from_socket(curr_socket, node_key: dict, default_val): 40 | """Get value from node socket - either evaluating the default value or following the link. 41 | 42 | :param curr_socket: node socket object. 43 | :param node_key: config key of node ids and which sockets to retrieve the float value. 44 | :param default_val: default float value if no nodes match. 45 | :return: value from socket 46 | """ 47 | if curr_socket.is_linked and not curr_socket.is_output: 48 | next_node = curr_socket.links[0].from_node 49 | 50 | if next_node.bl_idname == 'NodeGroupInput': 51 | socket_index = util.get_socket_index(curr_socket.links[0].from_socket) 52 | raise util.GroupInputException(input_socket_index=socket_index) 53 | 54 | # if a group node, use the right socket index 55 | if hasattr(next_node, 'node_tree'): 56 | output = next(util.find_outputs(next_node.node_tree), None) 57 | socket_index = util.get_socket_index(curr_socket.links[0].from_socket) 58 | 59 | try: 60 | return get_from_socket(output.inputs[socket_index], node_key, default_val) 61 | except util.GroupInputException as gie: 62 | input_node_socket_index = gie.input_socket_index 63 | return get_from_socket(next_node.inputs[input_node_socket_index], node_key, default_val) 64 | 65 | return get_from_node(curr_socket.links[0].from_node, node_key, default_val) 66 | elif hasattr(curr_socket, 'default_value'): 67 | return curr_socket.default_value 68 | 69 | return default_val 70 | 71 | 72 | def get_from_node(curr_node: bpy.types.Node, node_key: dict, default_val) -> float: 73 | """Find first float value found within node tree. 74 | 75 | :param curr_node: current node in recursive traversal. 76 | :param node_key: config key of node ids and which sockets to retrieve the float value. 77 | :param default_val: default float value if no nodes match. 78 | """ 79 | 80 | # enter group nodes 81 | if hasattr(curr_node, 'node_tree'): 82 | output = next(util.find_outputs(curr_node.node_tree), None) 83 | group_val = get_from_node(output, node_key, default_val) 84 | 85 | # if the default value, try the first group inputs 86 | if group_val == default_val: 87 | socket = curr_node.inputs[0] 88 | return get_from_socket(socket, node_key, default_val) 89 | 90 | result = next((p for p in node_key.keys() if p == curr_node.bl_idname), None) 91 | if result is not None: 92 | if callable(node_key[result]): 93 | return node_key[result](curr_node, node_key, default_val) 94 | elif isinstance(node_key[result], float): 95 | return node_key[result] 96 | else: 97 | direction, albedo_idx = node_key[result] 98 | curr_socket = getattr(curr_node, direction)[albedo_idx] 99 | 100 | return get_from_socket(curr_socket, node_key, default_val) 101 | 102 | if len(curr_node.inputs) == 1: 103 | curr_socket = curr_node.inputs[0] 104 | return get_from_socket(curr_socket, node_key, default_val) 105 | 106 | return default_val 107 | -------------------------------------------------------------------------------- /operator.py: -------------------------------------------------------------------------------- 1 | # Copyright (C) 2024 Spencer Magnusson 2 | # semagnum@gmail.com 3 | # Created by Spencer Magnusson 4 | # This program is free software: you can redistribute it and/or modify 5 | # it under the terms of the GNU General Public License as published by 6 | # the Free Software Foundation, either version 3 of the License, or 7 | # (at your option) any later version. 8 | # This program is distributed in the hope that it will be useful, 9 | # but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | # GNU General Public License for more details. 12 | # You should have received a copy of the GNU General Public License 13 | # along with this program. If not, see . 14 | 15 | import bpy 16 | from mathutils import Vector 17 | 18 | from . import config, node_eval as node, util 19 | 20 | 21 | def set_material(material, metallic: bool, roughness: bool): 22 | if material.use_nodes: 23 | node_tree = material.node_tree 24 | output = next(util.find_outputs(node_tree), None) 25 | 26 | if output is not None: 27 | material.diffuse_color = node.assert_color(node.get_from_node(output, config.ALBEDO_MAP, 28 | Vector((0.8, 0.8, 0.8, 1.0)) 29 | )) 30 | if roughness: 31 | material.roughness = node.assert_float(node.get_from_node(output, config.ROUGHNESS_MAP, 0.5)) 32 | 33 | if metallic: 34 | material.metallic = node.assert_float(node.get_from_node(output, config.METALLIC_MAP, 0.0)) 35 | 36 | 37 | class CFMOperator(bpy.types.Operator): 38 | bl_options = {'REGISTER', 'UNDO'} 39 | 40 | analyze_metallic: bpy.props.BoolProperty( 41 | name='Detect Metallic', 42 | description='Detects potential values for viewport material\'s metallic property', 43 | default=True, 44 | ) 45 | 46 | analyze_roughness: bpy.props.BoolProperty( 47 | name='Detect Roughness', 48 | description='Detects potential values for viewport material\'s roughness property', 49 | default=True, 50 | ) 51 | 52 | 53 | class SelectedObjectsOperator(CFMOperator): 54 | """Sets all selected object's viewport display properties.""" 55 | bl_idname = 'object.selected_objects_nodes_to_viewport' 56 | bl_label = 'Set Selected Objects\' Nodes To Viewport Display' 57 | 58 | def execute(self, context): 59 | materials = {slot.material 60 | for obj in context.selected_objects 61 | for slot in obj.material_slots 62 | if slot.material is not None} 63 | 64 | for material in materials: 65 | set_material(material, self.analyze_metallic, self.analyze_roughness) 66 | 67 | return {'FINISHED'} 68 | 69 | 70 | class ActiveMaterialOperator(CFMOperator): 71 | """Sets current object's active material's viewport display properties.""" 72 | bl_idname = 'object.active_material_nodes_to_viewport' 73 | bl_label = 'Active Material Nodes To Viewport Display' 74 | 75 | @classmethod 76 | def poll(cls, context): 77 | return context.active_object.active_material is not None and context.active_object.active_material.use_nodes 78 | 79 | def execute(self, context): 80 | set_material(context.active_object.active_material, self.analyze_metallic, self.analyze_roughness) 81 | 82 | return {'FINISHED'} 83 | 84 | 85 | class ActiveObjectOperator(CFMOperator): 86 | """Sets current object's material's viewport display properties.""" 87 | bl_idname = 'object.active_object_nodes_to_viewport' 88 | bl_label = 'Active Objects\' Material Nodes To Viewport Display' 89 | 90 | def execute(self, context): 91 | materials = {slot.material 92 | for slot in context.active_object.material_slots 93 | if slot.material is not None} 94 | 95 | for material in materials: 96 | set_material(material, self.analyze_metallic, self.analyze_roughness) 97 | 98 | return {'FINISHED'} 99 | 100 | 101 | class AllMaterialsOperator(CFMOperator): 102 | """Sets all materials' viewport display properties.""" 103 | bl_idname = 'object.all_material_nodes_to_viewport' 104 | bl_label = 'All Material Nodes To Viewport Display' 105 | 106 | def execute(self, _context): 107 | for material in bpy.data.materials: 108 | set_material(material, self.analyze_metallic, self.analyze_roughness) 109 | 110 | return {'FINISHED'} 111 | 112 | 113 | class ActiveMaterialNodeOperator(CFMOperator): 114 | """Sets all materials' viewport display properties.""" 115 | bl_idname = 'object.active_material_from_active_node_to_viewport' 116 | bl_label = 'Active Material Node To Viewport Display' 117 | bl_description = ('Set active material\'s viewport display attributes ' 118 | 'based on currently selected node (only select one!)') 119 | 120 | @classmethod 121 | def poll(cls, context): 122 | material = context.active_object.active_material 123 | return material is not None and material.use_nodes and len([node 124 | for node in material.node_tree.nodes 125 | if node.select]) == 1 126 | 127 | def execute(self, context): 128 | material = context.active_object.active_material 129 | active_node = [n for n in material.node_tree.nodes if n.select][0] 130 | material.diffuse_color = node.assert_color(node.get_from_node(active_node, config.ALBEDO_MAP, 131 | Vector((0.8, 0.8, 0.8, 1.0)) 132 | )) 133 | if self.analyze_roughness: 134 | material.roughness = node.assert_float(node.get_from_node(active_node, config.ROUGHNESS_MAP, 0.5)) 135 | 136 | if self.analyze_metallic: 137 | material.metallic = node.assert_float(node.get_from_node(active_node, config.METALLIC_MAP, 0.0)) 138 | 139 | return {'FINISHED'} 140 | -------------------------------------------------------------------------------- /panel.py: -------------------------------------------------------------------------------- 1 | # Copyright (C) 2024 Spencer Magnusson 2 | # semagnum@gmail.com 3 | # Created by Spencer Magnusson 4 | # This program is free software: you can redistribute it and/or modify 5 | # it under the terms of the GNU General Public License as published by 6 | # the Free Software Foundation, either version 3 of the License, or 7 | # (at your option) any later version. 8 | # This program is distributed in the hope that it will be useful, 9 | # but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | # GNU General Public License for more details. 12 | # You should have received a copy of the GNU General Public License 13 | # along with this program. If not, see . 14 | 15 | import bpy 16 | 17 | from . import operator 18 | 19 | 20 | class CM_PT_ObjectColorFromMaterial(bpy.types.Panel): 21 | bl_label = 'Viewport Display from Nodes' 22 | bl_idname = 'CM_PT_ObjectColorFromMaterial' 23 | bl_space_type = 'PROPERTIES' 24 | bl_region_type = 'WINDOW' 25 | bl_context = 'material' 26 | 27 | def draw(self, context): 28 | layout = self.layout 29 | window_manager = context.window_manager 30 | 31 | layout.use_property_split = True 32 | layout.use_property_decorate = False # No animation 33 | 34 | col = layout.column(heading='Detect') 35 | col.prop(window_manager, 'cfm_analyze_metallic', text='Metallic') 36 | col.prop(window_manager, 'cfm_analyze_roughness', text='Roughness') 37 | 38 | def draw_op(layout, bl_idname, **kwargs): 39 | op = layout.operator(bl_idname, **kwargs) 40 | op.analyze_metallic = window_manager.cfm_analyze_metallic 41 | op.analyze_roughness = window_manager.cfm_analyze_roughness 42 | 43 | row = layout.row() 44 | draw_op(row, operator.ActiveMaterialOperator.bl_idname, 45 | text='Active Material', icon='MATERIAL') 46 | draw_op(row, operator.ActiveMaterialNodeOperator.bl_idname, 47 | text='Active Node', icon='NODETREE') 48 | 49 | draw_op(layout, operator.ActiveObjectOperator.bl_idname, 50 | text='Active Object', icon='OBJECT_DATA') 51 | draw_op(layout, operator.SelectedObjectsOperator.bl_idname, 52 | text='Selected Objects', icon='SCENE_DATA') 53 | draw_op(layout, operator.AllMaterialsOperator.bl_idname, 54 | text='All Materials', icon='FILE_BLEND') 55 | -------------------------------------------------------------------------------- /util.py: -------------------------------------------------------------------------------- 1 | # Copyright (C) 2023 Spencer Magnusson 2 | # semagnum@gmail.com 3 | # Created by Spencer Magnusson 4 | # This program is free software: you can redistribute it and/or modify 5 | # it under the terms of the GNU General Public License as published by 6 | # the Free Software Foundation, either version 3 of the License, or 7 | # (at your option) any later version. 8 | # This program is distributed in the hope that it will be useful, 9 | # but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | # GNU General Public License for more details. 12 | # You should have received a copy of the GNU General Public License 13 | # along with this program. If not, see . 14 | 15 | import bpy 16 | from typing import Iterator 17 | 18 | 19 | class GroupInputException(Exception): 20 | """Exception to allow to get the socket index when recursion runs inside a group input node. 21 | Enables higher-up code to get the group input socket of the higher node tree. 22 | """ 23 | 24 | def __init__(self, input_socket_index): 25 | super().__init__('Ran into group input node') 26 | self.input_socket_index = input_socket_index 27 | 28 | 29 | def get_socket_index(socket): 30 | return int(socket.path_from_id().split('[')[-1][:-1]) # extracts index from str 31 | 32 | 33 | def find_outputs(node_tree: bpy.types.NodeTree) -> Iterator[bpy.types.Node]: 34 | """Returns all output nodes in a node tree.""" 35 | return (node for node in node_tree.nodes if 'Output' in node.bl_idname) 36 | --------------------------------------------------------------------------------