├── java ├── examples │ ├── HelloMixbox.bat │ └── HelloMixbox.java ├── mixbox.jar ├── src │ └── main │ │ └── resources │ │ └── com │ │ └── scrtwpns │ │ └── mixbox_lut.dat ├── build.bat ├── pom.xml └── README.md ├── rust ├── src │ ├── lut.dat │ └── lib.rs ├── Cargo.toml └── README.md ├── shaders ├── mixbox_lut.png ├── mixbox.hlsl ├── mixbox.glsl ├── mixbox.metal └── README.md ├── unity ├── Textures │ ├── MixboxLUT.png │ └── MixboxLUT.png.meta ├── Runtime │ ├── Scrtwpns.Mixbox.asmdef │ ├── Scrtwpns.Mixbox.asmdef.meta │ └── Mixbox.cs.meta ├── LICENSE.md.meta ├── README.md.meta ├── package.json.meta ├── Runtime.meta ├── Textures.meta ├── ShaderGraph.meta ├── ShaderLibrary.meta ├── ShaderLibrary │ ├── Mixbox.cginc.meta │ ├── Mixbox.hlsl.meta │ ├── Mixbox.cginc │ └── Mixbox.hlsl ├── Samples~ │ ├── SamplesHDRP │ │ ├── Scenes │ │ │ └── Scene.unity.meta │ │ ├── Scenes.meta │ │ ├── Shaders.meta │ │ ├── Materials.meta │ │ ├── Materials │ │ │ ├── MixboxSampleHDRPShaderGraphMaterial.mat.meta │ │ │ └── MixboxSampleHDRPShaderGraphMaterial.mat │ │ └── Shaders │ │ │ └── MixboxSampleHDRPShaderGraph.shadergraph.meta │ ├── SamplesURP │ │ ├── Scenes │ │ │ └── Scene.unity.meta │ │ ├── Scenes.meta │ │ ├── Shaders.meta │ │ ├── Materials.meta │ │ ├── Materials │ │ │ ├── MixboxSampleShaderGraphMaterial.mat.meta │ │ │ ├── MixboxSampleURPShaderMaterial.mat.meta │ │ │ ├── MixboxSampleURPShaderMaterial.mat │ │ │ └── MixboxSampleShaderGraphMaterial.mat │ │ └── Shaders │ │ │ ├── MixboxSampleURPShader.shader.meta │ │ │ ├── MixboxSampleShaderGraph.shadergraph.meta │ │ │ └── MixboxSampleURPShader.shader │ └── SamplesBuiltin │ │ ├── Scenes │ │ ├── Scene.unity.meta │ │ └── Scene.unity │ │ ├── Materials.meta │ │ ├── Scenes.meta │ │ ├── Shaders.meta │ │ ├── Materials │ │ ├── MixboxSampleMaterial.mat.meta │ │ └── MixboxSampleMaterial.mat │ │ └── Shaders │ │ ├── MixboxSampleShader.shader.meta │ │ └── MixboxSampleShader.shader ├── ShaderGraph │ ├── CustomFunctions.meta │ ├── CustomFunctions │ │ ├── MixboxFunctions.hlsl.meta │ │ └── MixboxFunctions.hlsl │ └── MixboxLerp.shadersubgraph.meta ├── package.json ├── Documentation~ │ └── README.md └── README.md ├── godot ├── addons │ └── mixbox │ │ ├── mixbox.res │ │ ├── mixbox_lut.png │ │ ├── mixbox_lut.png.import │ │ ├── mixbox.gdshaderinc │ │ ├── mixbox.gdshader │ │ ├── mixbox_lerp_node.gd │ │ └── mixbox.gd └── README.md ├── python ├── examples │ ├── hello.py │ ├── pillow.py │ ├── blender.py │ ├── npcv.py │ └── opengl.py └── README.md ├── csharp ├── examples │ ├── HelloMixbox.csproj │ └── HelloMixbox.cs ├── Mixbox.csproj └── README.md ├── javascript ├── examples │ ├── palette.html │ ├── mixer.html │ ├── mountains.html │ ├── svg.html │ ├── p5js.html │ ├── canvas.html │ ├── hello.html │ ├── gradients.html │ ├── threejs.html │ ├── webgl.html │ ├── mountains.js │ ├── palette.js │ ├── mixer.js │ ├── gradients.js │ └── splash.html └── README.md ├── webgl ├── example.html └── README.md └── cpp ├── README.md └── mixbox.h /java/examples/HelloMixbox.bat: -------------------------------------------------------------------------------- 1 | java -cp ../mixbox.jar HelloMixbox.java 2 | -------------------------------------------------------------------------------- /java/mixbox.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/scrtwpns/mixbox/HEAD/java/mixbox.jar -------------------------------------------------------------------------------- /rust/src/lut.dat: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/scrtwpns/mixbox/HEAD/rust/src/lut.dat -------------------------------------------------------------------------------- /shaders/mixbox_lut.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/scrtwpns/mixbox/HEAD/shaders/mixbox_lut.png -------------------------------------------------------------------------------- /unity/Textures/MixboxLUT.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/scrtwpns/mixbox/HEAD/unity/Textures/MixboxLUT.png -------------------------------------------------------------------------------- /godot/addons/mixbox/mixbox.res: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/scrtwpns/mixbox/HEAD/godot/addons/mixbox/mixbox.res -------------------------------------------------------------------------------- /godot/addons/mixbox/mixbox_lut.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/scrtwpns/mixbox/HEAD/godot/addons/mixbox/mixbox_lut.png -------------------------------------------------------------------------------- /java/src/main/resources/com/scrtwpns/mixbox_lut.dat: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/scrtwpns/mixbox/HEAD/java/src/main/resources/com/scrtwpns/mixbox_lut.dat -------------------------------------------------------------------------------- /unity/Runtime/Scrtwpns.Mixbox.asmdef: -------------------------------------------------------------------------------- 1 | { 2 | "name": "Scrtwpns.Mixbox", 3 | "references": [], 4 | "includePlatforms": [], 5 | "excludePlatforms": [] 6 | } -------------------------------------------------------------------------------- /java/build.bat: -------------------------------------------------------------------------------- 1 | javac -source 1.7 -target 1.7 src\main\java\com\scrtwpns\Mixbox.java -d build && copy src\main\resources\com\scrtwpns\mixbox_lut.dat build\com\scrtwpns && jar -cvf mixbox.jar -C build . 2 | -------------------------------------------------------------------------------- /unity/LICENSE.md.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: 4cdbb20e49a3f5f48ac2bbf852d78e9c 3 | TextScriptImporter: 4 | externalObjects: {} 5 | userData: 6 | assetBundleName: 7 | assetBundleVariant: 8 | -------------------------------------------------------------------------------- /unity/README.md.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: 8cd3a0808b52e7f4ab62eaee07dd6f1a 3 | TextScriptImporter: 4 | externalObjects: {} 5 | userData: 6 | assetBundleName: 7 | assetBundleVariant: 8 | -------------------------------------------------------------------------------- /unity/package.json.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: 561481a9fef54ef46a9685b2db21c5d0 3 | PackageManifestImporter: 4 | externalObjects: {} 5 | userData: 6 | assetBundleName: 7 | assetBundleVariant: 8 | -------------------------------------------------------------------------------- /unity/Runtime.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: d7271a729fd4b944fbe2954475dfc065 3 | folderAsset: yes 4 | DefaultImporter: 5 | externalObjects: {} 6 | userData: 7 | assetBundleName: 8 | assetBundleVariant: 9 | -------------------------------------------------------------------------------- /unity/Textures.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: c50cb8edb0194174ea9bcf461b6c5dc0 3 | folderAsset: yes 4 | DefaultImporter: 5 | externalObjects: {} 6 | userData: 7 | assetBundleName: 8 | assetBundleVariant: 9 | -------------------------------------------------------------------------------- /unity/ShaderGraph.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: 2ff6266ad4cadeb4191c07532420ca02 3 | folderAsset: yes 4 | DefaultImporter: 5 | externalObjects: {} 6 | userData: 7 | assetBundleName: 8 | assetBundleVariant: 9 | -------------------------------------------------------------------------------- /unity/ShaderLibrary.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: cd4c6311a8e214c4182bf19784f39f8f 3 | folderAsset: yes 4 | DefaultImporter: 5 | externalObjects: {} 6 | userData: 7 | assetBundleName: 8 | assetBundleVariant: 9 | -------------------------------------------------------------------------------- /unity/ShaderLibrary/Mixbox.cginc.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: 0dd349175be5d4e40aa8e73df152ac60 3 | ShaderIncludeImporter: 4 | externalObjects: {} 5 | userData: 6 | assetBundleName: 7 | assetBundleVariant: 8 | -------------------------------------------------------------------------------- /unity/ShaderLibrary/Mixbox.hlsl.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: 99e868ffcd385494fb8d6670aba3b648 3 | ShaderIncludeImporter: 4 | externalObjects: {} 5 | userData: 6 | assetBundleName: 7 | assetBundleVariant: 8 | -------------------------------------------------------------------------------- /python/examples/hello.py: -------------------------------------------------------------------------------- 1 | import mixbox 2 | 3 | rgb1 = (0, 33, 133) # blue 4 | rgb2 = (252, 211, 0) # yellow 5 | t = 0.5 # mixing ratio 6 | 7 | rgb_mix = mixbox.lerp(rgb1, rgb2, t) 8 | 9 | print(rgb_mix) 10 | -------------------------------------------------------------------------------- /unity/Samples~/SamplesHDRP/Scenes/Scene.unity.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: d8d378e5c22378842b3571445bf2d526 3 | DefaultImporter: 4 | externalObjects: {} 5 | userData: 6 | assetBundleName: 7 | assetBundleVariant: 8 | -------------------------------------------------------------------------------- /unity/Samples~/SamplesURP/Scenes/Scene.unity.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: d8d378e5c22378842b3571445bf2d526 3 | DefaultImporter: 4 | externalObjects: {} 5 | userData: 6 | assetBundleName: 7 | assetBundleVariant: 8 | -------------------------------------------------------------------------------- /unity/Runtime/Scrtwpns.Mixbox.asmdef.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: 0dc470e3a5755fe46bfc9aa687c0cff7 3 | AssemblyDefinitionImporter: 4 | externalObjects: {} 5 | userData: 6 | assetBundleName: 7 | assetBundleVariant: 8 | -------------------------------------------------------------------------------- /unity/Samples~/SamplesBuiltin/Scenes/Scene.unity.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: 80973dec35f0fe844ac839fa0ec89a06 3 | DefaultImporter: 4 | externalObjects: {} 5 | userData: 6 | assetBundleName: 7 | assetBundleVariant: 8 | -------------------------------------------------------------------------------- /unity/Samples~/SamplesHDRP/Scenes.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: 8a01fcc32dcf85d46813ee6861fbf932 3 | folderAsset: yes 4 | DefaultImporter: 5 | externalObjects: {} 6 | userData: 7 | assetBundleName: 8 | assetBundleVariant: 9 | -------------------------------------------------------------------------------- /unity/Samples~/SamplesHDRP/Shaders.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: edc5a5718e48b2946b4993ac276dac26 3 | folderAsset: yes 4 | DefaultImporter: 5 | externalObjects: {} 6 | userData: 7 | assetBundleName: 8 | assetBundleVariant: 9 | -------------------------------------------------------------------------------- /unity/Samples~/SamplesURP/Scenes.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: 8a01fcc32dcf85d46813ee6861fbf932 3 | folderAsset: yes 4 | DefaultImporter: 5 | externalObjects: {} 6 | userData: 7 | assetBundleName: 8 | assetBundleVariant: 9 | -------------------------------------------------------------------------------- /unity/Samples~/SamplesURP/Shaders.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: edc5a5718e48b2946b4993ac276dac26 3 | folderAsset: yes 4 | DefaultImporter: 5 | externalObjects: {} 6 | userData: 7 | assetBundleName: 8 | assetBundleVariant: 9 | -------------------------------------------------------------------------------- /unity/ShaderGraph/CustomFunctions.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: 94751c8e8a8eee8418810170ed6644ac 3 | folderAsset: yes 4 | DefaultImporter: 5 | externalObjects: {} 6 | userData: 7 | assetBundleName: 8 | assetBundleVariant: 9 | -------------------------------------------------------------------------------- /unity/Samples~/SamplesBuiltin/Materials.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: fc126e37ec6a7e44a82670bbd8939a07 3 | folderAsset: yes 4 | DefaultImporter: 5 | externalObjects: {} 6 | userData: 7 | assetBundleName: 8 | assetBundleVariant: 9 | -------------------------------------------------------------------------------- /unity/Samples~/SamplesBuiltin/Scenes.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: a26204cd28a06d843b2ac6e8b9ea28d9 3 | folderAsset: yes 4 | DefaultImporter: 5 | externalObjects: {} 6 | userData: 7 | assetBundleName: 8 | assetBundleVariant: 9 | -------------------------------------------------------------------------------- /unity/Samples~/SamplesBuiltin/Shaders.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: 1cb9032d8063c954cbce2b919e5dc135 3 | folderAsset: yes 4 | DefaultImporter: 5 | externalObjects: {} 6 | userData: 7 | assetBundleName: 8 | assetBundleVariant: 9 | -------------------------------------------------------------------------------- /unity/Samples~/SamplesHDRP/Materials.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: 892b07ffc6cd8954a8c7eb778299a7c8 3 | folderAsset: yes 4 | DefaultImporter: 5 | externalObjects: {} 6 | userData: 7 | assetBundleName: 8 | assetBundleVariant: 9 | -------------------------------------------------------------------------------- /unity/Samples~/SamplesURP/Materials.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: 892b07ffc6cd8954a8c7eb778299a7c8 3 | folderAsset: yes 4 | DefaultImporter: 5 | externalObjects: {} 6 | userData: 7 | assetBundleName: 8 | assetBundleVariant: 9 | -------------------------------------------------------------------------------- /unity/ShaderGraph/CustomFunctions/MixboxFunctions.hlsl.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: cb159fec42c279547ac0aeb6aa800e61 3 | ShaderIncludeImporter: 4 | externalObjects: {} 5 | userData: 6 | assetBundleName: 7 | assetBundleVariant: 8 | -------------------------------------------------------------------------------- /unity/Samples~/SamplesBuiltin/Materials/MixboxSampleMaterial.mat.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: 22f4a840af474fe47b98f7c563b06bd6 3 | NativeFormatImporter: 4 | externalObjects: {} 5 | mainObjectFileID: 0 6 | userData: 7 | assetBundleName: 8 | assetBundleVariant: 9 | -------------------------------------------------------------------------------- /unity/Samples~/SamplesURP/Materials/MixboxSampleShaderGraphMaterial.mat.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: 2cac3e2b2c0440f4ab9b4f7c213094a8 3 | NativeFormatImporter: 4 | externalObjects: {} 5 | mainObjectFileID: 2100000 6 | userData: 7 | assetBundleName: 8 | assetBundleVariant: 9 | -------------------------------------------------------------------------------- /unity/Samples~/SamplesURP/Materials/MixboxSampleURPShaderMaterial.mat.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: d29eec281162ba64c92e1534c872aee0 3 | NativeFormatImporter: 4 | externalObjects: {} 5 | mainObjectFileID: 2100000 6 | userData: 7 | assetBundleName: 8 | assetBundleVariant: 9 | -------------------------------------------------------------------------------- /unity/Samples~/SamplesHDRP/Materials/MixboxSampleHDRPShaderGraphMaterial.mat.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: e1c84425eb63f8840898cfae7d5104c1 3 | NativeFormatImporter: 4 | externalObjects: {} 5 | mainObjectFileID: 2100000 6 | userData: 7 | assetBundleName: 8 | assetBundleVariant: 9 | -------------------------------------------------------------------------------- /unity/Runtime/Mixbox.cs.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: a83e1aa56c038094292cda8c7eb1a14d 3 | MonoImporter: 4 | externalObjects: {} 5 | serializedVersion: 2 6 | defaultReferences: [] 7 | executionOrder: 0 8 | icon: {instanceID: 0} 9 | userData: 10 | assetBundleName: 11 | assetBundleVariant: 12 | -------------------------------------------------------------------------------- /unity/Samples~/SamplesURP/Shaders/MixboxSampleURPShader.shader.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: 2a107236c36652b42928a70f71fe9d06 3 | ShaderImporter: 4 | externalObjects: {} 5 | defaultTextures: [] 6 | nonModifiableTextures: [] 7 | preprocessorOverride: 0 8 | userData: 9 | assetBundleName: 10 | assetBundleVariant: 11 | -------------------------------------------------------------------------------- /unity/Samples~/SamplesBuiltin/Shaders/MixboxSampleShader.shader.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: bb6490bc8e0170a40a722ad60ca9e82d 3 | ShaderImporter: 4 | externalObjects: {} 5 | defaultTextures: [] 6 | nonModifiableTextures: [] 7 | preprocessorOverride: 0 8 | userData: 9 | assetBundleName: 10 | assetBundleVariant: 11 | -------------------------------------------------------------------------------- /csharp/examples/HelloMixbox.csproj: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | Exe 5 | net5.0 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | -------------------------------------------------------------------------------- /unity/ShaderGraph/MixboxLerp.shadersubgraph.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: cea2d6a55fe1f64458be5f69a8bff761 3 | ScriptedImporter: 4 | internalIDToNameTable: [] 5 | externalObjects: {} 6 | serializedVersion: 2 7 | userData: 8 | assetBundleName: 9 | assetBundleVariant: 10 | script: {fileID: 11500000, guid: 60072b568d64c40a485e0fc55012dc9f, type: 3} 11 | -------------------------------------------------------------------------------- /python/examples/pillow.py: -------------------------------------------------------------------------------- 1 | from PIL import Image 2 | import mixbox 3 | 4 | rgb1 = (0, 33, 133) # blue 5 | rgb2 = (252, 211, 0) # yellow 6 | 7 | img = Image.new('RGB', (256, 256)) 8 | 9 | pixels = img.load() 10 | 11 | width,height = img.size 12 | for x in range(width): 13 | for y in range(height): 14 | pixels[x, y] = mixbox.lerp(rgb1, rgb2, x / 256.0) 15 | 16 | img.show() 17 | -------------------------------------------------------------------------------- /unity/Samples~/SamplesURP/Shaders/MixboxSampleShaderGraph.shadergraph.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: 878861faca4e2fa4ea3130c47204b113 3 | ScriptedImporter: 4 | internalIDToNameTable: [] 5 | externalObjects: {} 6 | serializedVersion: 2 7 | userData: 8 | assetBundleName: 9 | assetBundleVariant: 10 | script: {fileID: 11500000, guid: 625f186215c104763be7675aa2d941aa, type: 3} 11 | -------------------------------------------------------------------------------- /unity/Samples~/SamplesHDRP/Shaders/MixboxSampleHDRPShaderGraph.shadergraph.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: 5078a8abaf2327c44bdceef809b956b1 3 | ScriptedImporter: 4 | internalIDToNameTable: [] 5 | externalObjects: {} 6 | serializedVersion: 2 7 | userData: 8 | assetBundleName: 9 | assetBundleVariant: 10 | script: {fileID: 11500000, guid: 625f186215c104763be7675aa2d941aa, type: 3} 11 | -------------------------------------------------------------------------------- /rust/Cargo.toml: -------------------------------------------------------------------------------- 1 | [package] 2 | name = "mixbox" 3 | version = "2.0.0" 4 | edition = "2021" 5 | description = "Pigment-Based Color Mixing" 6 | readme = "README.md" 7 | homepage = "https://scrtwpns.com/mixbox" 8 | repository = "https://github.com/scrtwpns/mixbox" 9 | license = "CC-BY-NC-4.0" 10 | keywords = ["color-mixing", "pigments", "rgb", "kubelka-munk", "paints"] 11 | 12 | [dependencies] 13 | libm = "0.2.5" 14 | -------------------------------------------------------------------------------- /csharp/Mixbox.csproj: -------------------------------------------------------------------------------- 1 | 2 | 3 | netstandard2.0 4 | Mixbox 5 | 2.0.0 6 | Pigment-Based Color Mixing 7 | Secret Weapons 8 | Copyright (c) Secret Weapons 2022 9 | 10 | 11 | -------------------------------------------------------------------------------- /python/examples/blender.py: -------------------------------------------------------------------------------- 1 | import bpy 2 | import mixbox 3 | 4 | rgb1 = (0.0, 0.015, 0.235) # blue 5 | rgb2 = (0.973, 0.651, 0.0) # yellow 6 | 7 | n = 5 8 | for i in range(0, n): 9 | bpy.ops.mesh.primitive_cube_add(location = ((i - n/2 + 0.5) * 3, 0, 0)) 10 | mat = bpy.data.materials.new("material") 11 | mat.diffuse_color = mixbox.lerp_linear_float(rgb1, rgb2, i / (n - 1)) 12 | bpy.context.object.active_material = mat 13 | -------------------------------------------------------------------------------- /python/examples/npcv.py: -------------------------------------------------------------------------------- 1 | import cv2 2 | import numpy as np 3 | import mixbox 4 | 5 | height = 256 6 | width = 256 7 | img = np.zeros((height, width, 3), np.uint8) 8 | 9 | rgb1 = (0, 33, 133) # blue 10 | rgb2 = (252, 211, 0) # yellow 11 | 12 | for x in range(0, 256): 13 | for y in range(0, 256): 14 | img[x, y] = mixbox.lerp(rgb1, rgb2, x / 255.0) 15 | 16 | cv2.imshow("image", cv2.cvtColor(img, cv2.COLOR_RGB2BGR)) 17 | cv2.waitKey(0) 18 | -------------------------------------------------------------------------------- /javascript/examples/palette.html: 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16 | 17 | -------------------------------------------------------------------------------- /java/examples/HelloMixbox.java: -------------------------------------------------------------------------------- 1 | import java.awt.Color; 2 | import com.scrtwpns.Mixbox; 3 | 4 | class HelloMixbox { 5 | public static void main(String[] args) { 6 | Color color1 = new Color(0, 33, 133); // blue 7 | Color color2 = new Color(252, 211, 0); // yellow 8 | float t = 0.5f; // mixing ratio 9 | 10 | Color colorMix = new Color(Mixbox.lerp(color1.getRGB(), color2.getRGB(), t)); 11 | 12 | System.out.print(colorMix); 13 | } 14 | } 15 | -------------------------------------------------------------------------------- /javascript/examples/mountains.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
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16 | 17 | -------------------------------------------------------------------------------- /csharp/examples/HelloMixbox.cs: -------------------------------------------------------------------------------- 1 | using System.Drawing; 2 | using Scrtwpns.Mixbox; 3 | 4 | public class HelloMixbox 5 | { 6 | public static void Main(string[] args) 7 | { 8 | Color color1 = Color.FromArgb(0, 33, 133); // blue 9 | Color color2 = Color.FromArgb(252, 211, 0); // yellow 10 | float t = 0.5f; // mixing ratio 11 | 12 | Color colorMix = Color.FromArgb(Mixbox.Lerp(color1.ToArgb(), color2.ToArgb(), t)); 13 | 14 | System.Console.WriteLine(colorMix); 15 | } 16 | } 17 | -------------------------------------------------------------------------------- /javascript/examples/svg.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 15 | 16 | 17 | -------------------------------------------------------------------------------- /javascript/examples/p5js.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 20 | 21 | 22 | 23 | 24 | -------------------------------------------------------------------------------- /python/examples/opengl.py: -------------------------------------------------------------------------------- 1 | import pygame as pg 2 | from pygame.locals import * 3 | 4 | from OpenGL.GL import * 5 | from OpenGL.GLU import * 6 | 7 | import mixbox 8 | 9 | pg.init() 10 | pg.display.set_mode((640, 480), DOUBLEBUF | OPENGL) 11 | 12 | while True: 13 | rgb1 = (0.0, 0.129, 0.522) # blue 14 | rgb2 = (0.988, 0.827, 0.0) # yellow 15 | 16 | n = 640 17 | glBegin(GL_LINES) 18 | for i in range(0, n+1): 19 | glColor(mixbox.lerp_float(rgb1, rgb2, i / n)) 20 | glVertex((i / n)*2 - 1, -1) 21 | glVertex((i / n)*2 - 1, +1) 22 | glEnd() 23 | 24 | pg.display.flip() 25 | 26 | for event in pg.event.get(): 27 | if event.type == pg.QUIT: 28 | pg.quit() 29 | quit() 30 | -------------------------------------------------------------------------------- /javascript/examples/canvas.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 19 | 20 | 21 | -------------------------------------------------------------------------------- /godot/addons/mixbox/mixbox_lut.png.import: -------------------------------------------------------------------------------- 1 | [remap] 2 | 3 | importer="texture" 4 | type="StreamTexture" 5 | path="res://.import/mixbox_lut.png-d8cb77d0d5322618f1648925da003780.stex" 6 | metadata={ 7 | "vram_texture": false 8 | } 9 | 10 | [deps] 11 | 12 | source_file="res://addons/mixbox/mixbox_lut.png" 13 | dest_files=[ "res://.import/mixbox_lut.png-d8cb77d0d5322618f1648925da003780.stex" ] 14 | 15 | [params] 16 | 17 | compress/mode=3 18 | compress/lossy_quality=0.7 19 | compress/hdr_mode=0 20 | compress/bptc_ldr=0 21 | compress/normal_map=0 22 | flags/repeat=0 23 | flags/filter=true 24 | flags/mipmaps=false 25 | flags/anisotropic=false 26 | flags/srgb=2 27 | process/fix_alpha_border=false 28 | process/premult_alpha=false 29 | process/HDR_as_SRGB=false 30 | process/invert_color=false 31 | process/normal_map_invert_y=false 32 | stream=false 33 | size_limit=0 34 | detect_3d=false 35 | svg/scale=1.0 36 | -------------------------------------------------------------------------------- /unity/package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "com.scrtwpns.mixbox", 3 | "version": "2.0.0", 4 | "displayName": "Mixbox", 5 | "description": "Pigment-Based Color Mixing", 6 | "unity": "2019.3", 7 | "author": { 8 | "name": "Secret Weapons", 9 | "email": "mixbox@scrtwpns.com", 10 | "url": "https://scrtwpns.com" 11 | }, 12 | "samples": [ 13 | { 14 | "displayName": "Built-in Samples", 15 | "description": "Contains sample shaders for the Built-in Render Pipelne", 16 | "path": "Samples~/SamplesBuiltin" 17 | }, 18 | { 19 | "displayName": "URP Samples", 20 | "description": "Contains sample shaders for the Universal Render Pipelne", 21 | "path": "Samples~/SamplesURP" 22 | }, 23 | { 24 | "displayName": "HDRP Samples", 25 | "description": "Contains sample shaders for the High Definition Render Pipelne", 26 | "path": "Samples~/SamplesHDRP" 27 | } 28 | ] 29 | } 30 | -------------------------------------------------------------------------------- /javascript/examples/hello.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 |
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29 | 30 | 31 | -------------------------------------------------------------------------------- /unity/Samples~/SamplesBuiltin/Shaders/MixboxSampleShader.shader: -------------------------------------------------------------------------------- 1 | Shader "Mixbox/Mixbox Sample Shader" 2 | { 3 | Properties 4 | { 5 | [NoScaleOffset] _MixboxLUT ("Mixbox LUT", 2D) = "white" {} // assign "Packages/Mixbox/Textures/MixboxLUT.png" 6 | 7 | _Color1 ("Color 1", Color) = (0, 0.129, 0.522, 1) // blue 8 | _Color2 ("Color 2", Color) = (0.988, 0.827, 0, 1) // yellow 9 | } 10 | SubShader 11 | { 12 | Pass 13 | { 14 | CGPROGRAM 15 | #pragma vertex vert 16 | #pragma fragment frag 17 | 18 | #include "UnityCG.cginc" 19 | 20 | sampler2D _MixboxLUT; 21 | #include "Packages/com.scrtwpns.mixbox/ShaderLibrary/Mixbox.cginc" 22 | 23 | fixed4 _Color1; 24 | fixed4 _Color2; 25 | 26 | struct appdata { float4 vertex : POSITION; float2 uv : TEXCOORD0; }; 27 | struct v2f { float2 uv : TEXCOORD0; float4 vertex : SV_POSITION; }; 28 | 29 | v2f vert (appdata v) 30 | { 31 | v2f o; 32 | o.vertex = UnityObjectToClipPos(v.vertex); 33 | o.uv = v.uv; 34 | return o; 35 | } 36 | 37 | fixed4 frag (v2f i) : SV_Target 38 | { 39 | fixed4 mixedColor = MixboxLerp(_Color1, _Color2, i.uv.x); 40 | return mixedColor; 41 | } 42 | ENDCG 43 | } 44 | } 45 | } 46 | -------------------------------------------------------------------------------- /javascript/examples/threejs.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 43 | 44 | 45 | -------------------------------------------------------------------------------- /unity/Samples~/SamplesURP/Shaders/MixboxSampleURPShader.shader: -------------------------------------------------------------------------------- 1 | Shader "Mixbox/Mixbox URP Sample Shader" 2 | { 3 | Properties 4 | { 5 | [NoScaleOffset] _MixboxLUT ("Mixbox LUT", 2D) = "white" {} // assign "Packages/Mixbox/Textures/MixboxLUT.png" 6 | 7 | _Color1 ("Color 1", Color) = (0, 0.129, 0.522, 1) // blue 8 | _Color2 ("Color 2", Color) = (0.988, 0.827, 0, 1) // yellow 9 | } 10 | 11 | SubShader 12 | { 13 | Tags { "RenderType" = "Opaque" "RenderPipeline" = "UniversalRenderPipeline" } 14 | 15 | Pass 16 | { 17 | HLSLPROGRAM 18 | #pragma vertex vert 19 | #pragma fragment frag 20 | 21 | #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl" 22 | 23 | TEXTURE2D(_MixboxLUT); 24 | SAMPLER(sampler_MixboxLUT); 25 | 26 | #include "Packages/com.scrtwpns.mixbox/ShaderLibrary/Mixbox.hlsl" 27 | 28 | struct Attributes { float4 positionOS : POSITION; float2 uv : TEXCOORD0; }; 29 | struct Varyings { float4 positionHCS : SV_POSITION; float2 uv : TEXCOORD0; }; 30 | 31 | CBUFFER_START(UnityPerMaterial) 32 | half4 _Color1; 33 | half4 _Color2; 34 | CBUFFER_END 35 | 36 | Varyings vert(Attributes IN) 37 | { 38 | Varyings OUT; 39 | OUT.positionHCS = TransformObjectToHClip(IN.positionOS.xyz); 40 | OUT.uv = IN.uv; 41 | return OUT; 42 | } 43 | 44 | half4 frag(Varyings IN) : SV_Target 45 | { 46 | return MixboxLerp(_Color1, _Color2, IN.uv.x); 47 | } 48 | ENDHLSL 49 | } 50 | } 51 | } 52 | -------------------------------------------------------------------------------- /unity/ShaderLibrary/Mixbox.cginc: -------------------------------------------------------------------------------- 1 | // ========================================================== 2 | // MIXBOX 2.0 (c) 2022 Secret Weapons. All rights reserved. 3 | // License: Creative Commons Attribution-NonCommercial 4.0 4 | // Authors: Sarka Sochorova and Ondrej Jamriska 5 | // ========================================================== 6 | // 7 | // BASIC USAGE 8 | // 9 | // float3 rgb = MixboxLerp(rgb1, rgb2, t); 10 | // 11 | // MULTI-COLOR MIXING 12 | // 13 | // MixboxLatent z1 = MixboxRGBToLatent(rgb1); 14 | // MixboxLatent z2 = MixboxRGBToLatent(rgb2); 15 | // MixboxLatent z3 = MixboxRGBToLatent(rgb3); 16 | // 17 | // // mix 30% of rgb1, 60% of rgb2, and 10% of rgb3 18 | // MixboxLatent z_mix = 0.3*z1 + 0.6*z2 + 0.1*z3; 19 | // 20 | // float3 rgb_mix = MixboxLatentToRGB(z_mix); 21 | // 22 | // PIGMENT COLORS 23 | // 24 | // Cadmium Yellow 0.996, 0.925, 0.000 25 | // Hansa Yellow 0.988, 0.827, 0.000 26 | // Cadmium Orange 1.000, 0.412, 0.000 27 | // Cadmium Red 1.000, 0.153, 0.008 28 | // Quinacridone Magenta 0.502, 0.008, 0.180 29 | // Cobalt Violet 0.306, 0.000, 0.259 30 | // Ultramarine Blue 0.098, 0.000, 0.349 31 | // Cobalt Blue 0.000, 0.129, 0.522 32 | // Phthalo Blue 0.051, 0.106, 0.267 33 | // Phthalo Green 0.000, 0.235, 0.196 34 | // Permanent Green 0.027, 0.427, 0.086 35 | // Sap Green 0.420, 0.580, 0.016 36 | // Burnt Sienna 0.482, 0.282, 0.000 37 | // 38 | // LICENSING 39 | // 40 | // If you want to obtain commercial license, please 41 | // contact us at: mixbox@scrtwpns.com 42 | // 43 | 44 | #include "Packages/com.scrtwpns.mixbox/ShaderLibrary/Mixbox.hlsl" 45 | -------------------------------------------------------------------------------- /unity/Samples~/SamplesURP/Materials/MixboxSampleURPShaderMaterial.mat: -------------------------------------------------------------------------------- 1 | %YAML 1.1 2 | %TAG !u! 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All rights reserved.
54 | Mixbox is provided under the CC BY-NC 4.0 license for non-commercial use only.
55 | If you want to obtain commercial license, please contact: mixbox@scrtwpns.com 56 | -------------------------------------------------------------------------------- /rust/README.md: -------------------------------------------------------------------------------- 1 | # Mixbox for Rust 2 | ```ini 3 | mixbox = "2.0.0" # add this line to your Cargo.toml 4 | ``` 5 | 6 | ## Usage 7 | ```rust 8 | fn main() { 9 | let rgb1 = [0, 33, 133]; // blue 10 | let rgb2 = [252, 211, 0]; // yellow 11 | let t = 0.5; // mixing ratio 12 | 13 | let [r, g, b] = mixbox::lerp(&rgb1, &rgb2, t); 14 | 15 | println!("{} {} {}", r, g, b); 16 | } 17 | ``` 18 | 19 | ## Mixing Multiple Colors 20 | ```rust 21 | let z1 = mixbox::rgb_to_latent(&rgb1); 22 | let z2 = mixbox::rgb_to_latent(&rgb2); 23 | let z3 = mixbox::rgb_to_latent(&rgb3); 24 | 25 | let mut z_mix = [0.0; mixbox::LATENT_SIZE]; 26 | 27 | for i in 0..z_mix.len() { // mix together: 28 | z_mix[i] = 0.3*z1[i] + // 30% of rgb1 29 | 0.6*z2[i] + // 60% of rgb2 30 | 0.1*z3[i]; // 10% of rgb3 31 | } 32 | 33 | let rgb_mix = mixbox::latent_to_rgb(&z_mix); 34 | ``` 35 | 36 | ## Pigment Colors 37 | | Pigment | | RGB | Float RGB | Linear RGB | 38 | | --- | --- |:----:|:----:|:----:| 39 | | Cadmium Yellow | | 254, 236, 0 | 0.996, 0.925, 0.0 | 0.991, 0.839, 0.0 | 40 | | Hansa Yellow | | 252, 211, 0 | 0.988, 0.827, 0.0 | 0.973, 0.651, 0.0 | 41 | | Cadmium Orange | | 255, 105, 0 | 1.0, 0.412, 0.0 | 1.0, 0.141, 0.0 | 42 | | Cadmium Red | | 255, 39, 2 | 1.0, 0.153, 0.008 | 1.0, 0.02, 0.001 | 43 | | Quinacridone Magenta | | 128, 2, 46 | 0.502, 0.008, 0.18 | 0.216, 0.001, 0.027 | 44 | | Cobalt Violet | | 78, 0, 66 | 0.306, 0.0, 0.259 | 0.076, 0.0, 0.054 | 45 | | Ultramarine Blue | | 25, 0, 89 | 0.098, 0.0, 0.349 | 0.01, 0.0, 0.1 | 46 | | Cobalt Blue | | 0, 33, 133 | 0.0, 0.129, 0.522 | 0.0, 0.015, 0.235 | 47 | | Phthalo Blue | | 13, 27, 68 | 0.051, 0.106, 0.267 | 0.004, 0.011, 0.058 | 48 | | Phthalo Green | | 0, 60, 50 | 0.0, 0.235, 0.196 | 0.0, 0.045, 0.032 | 49 | | Permanent Green | | 7, 109, 22 | 0.027, 0.427, 0.086 | 0.002, 0.153, 0.008 | 50 | | Sap Green | | 107, 148, 4 | 0.42, 0.58, 0.016 | 0.147, 0.296, 0.001 | 51 | | Burnt Sienna | | 123, 72, 0 | 0.482, 0.282, 0.0 | 0.198, 0.065, 0.0 | 52 | 53 | ## License 54 | Copyright (c) 2022, Secret Weapons. All rights reserved.
55 | Mixbox is provided under the CC BY-NC 4.0 license for non-commercial use only.
56 | If you want to obtain commercial license, please contact: mixbox@scrtwpns.com 57 | -------------------------------------------------------------------------------- /cpp/README.md: -------------------------------------------------------------------------------- 1 | ## Usage 2 | ```c++ 3 | #include 4 | #include "mixbox.h" 5 | 6 | int main() { 7 | unsigned char r1 = 0, g1 = 33, b1 = 133; // blue 8 | unsigned char r2 = 252, g2 = 211, b2 = 0; // yellow 9 | float t = 0.5; 10 | unsigned char r, g, b; 11 | 12 | mixbox_lerp(r1, g1, b1, // first color 13 | r2, g2, b2, // second color 14 | t, // mixing ratio 15 | &r, &g, &b); // result 16 | 17 | printf("%d %d %d\n", r, g, b); 18 | } 19 | ``` 20 | ## Mixing Multiple Colors 21 | ```c++ 22 | mixbox_latent z1, z2, z3, z_mix; 23 | 24 | mixbox_rgb_to_latent(r1, g1, b1, z1); 25 | mixbox_rgb_to_latent(r2, g2, b2, z2); 26 | mixbox_rgb_to_latent(r3, g3, b3, z3); 27 | 28 | for (int i = 0; i < MIXBOX_LATENT_SIZE; i++) { 29 | // mix 30% of rgb1, 60% of rgb2, and 10% of rgb3 30 | z_mix[i] = 0.3f*z1[i] + 0.6f*z2[i] + 0.1f*z3[i]; 31 | } 32 | 33 | mixbox_latent_to_rgb(z_mix, &r, &g, &b); 34 | ``` 35 | 36 | ## Pigment Colors 37 | | Pigment | | RGB | Float RGB | Linear RGB | 38 | | --- | --- |:----:|:----:|:----:| 39 | | Cadmium Yellow | | 254, 236, 0 | 0.996, 0.925, 0.0 | 0.991, 0.839, 0.0 | 40 | | Hansa Yellow | | 252, 211, 0 | 0.988, 0.827, 0.0 | 0.973, 0.651, 0.0 | 41 | | Cadmium Orange | | 255, 105, 0 | 1.0, 0.412, 0.0 | 1.0, 0.141, 0.0 | 42 | | Cadmium Red | | 255, 39, 2 | 1.0, 0.153, 0.008 | 1.0, 0.02, 0.001 | 43 | | Quinacridone Magenta | | 128, 2, 46 | 0.502, 0.008, 0.18 | 0.216, 0.001, 0.027 | 44 | | Cobalt Violet | | 78, 0, 66 | 0.306, 0.0, 0.259 | 0.076, 0.0, 0.054 | 45 | | Ultramarine Blue | | 25, 0, 89 | 0.098, 0.0, 0.349 | 0.01, 0.0, 0.1 | 46 | | Cobalt Blue | | 0, 33, 133 | 0.0, 0.129, 0.522 | 0.0, 0.015, 0.235 | 47 | | Phthalo Blue | | 13, 27, 68 | 0.051, 0.106, 0.267 | 0.004, 0.011, 0.058 | 48 | | Phthalo Green | | 0, 60, 50 | 0.0, 0.235, 0.196 | 0.0, 0.045, 0.032 | 49 | | Permanent Green | | 7, 109, 22 | 0.027, 0.427, 0.086 | 0.002, 0.153, 0.008 | 50 | | Sap Green | | 107, 148, 4 | 0.42, 0.58, 0.016 | 0.147, 0.296, 0.001 | 51 | | Burnt Sienna | | 123, 72, 0 | 0.482, 0.282, 0.0 | 0.198, 0.065, 0.0 | 52 | 53 | ## License 54 | Copyright (c) 2022, Secret Weapons. All rights reserved.
55 | Mixbox is provided under the CC BY-NC 4.0 license for non-commercial use only.
56 | If you want to obtain commercial license, please contact: mixbox@scrtwpns.com 57 | -------------------------------------------------------------------------------- /webgl/README.md: -------------------------------------------------------------------------------- 1 | ## Mixbox in WebGL 2 | 3 | ```html 4 | 5 | ``` 6 | ```javascript 7 | import mixbox from 'https://scrtwpns.com/mixbox.esm.js'; // for ES6 module use this instead 8 | ``` 9 | 10 | ```javascript 11 | var shader = ` 12 | precision highp float; 13 | 14 | // uncomment the following line if you work in linear space 15 | // #define MIXBOX_COLORSPACE_LINEAR 16 | 17 | uniform sampler2D mixbox_lut; // bind mixbox.lutTexture(gl) here 18 | 19 | #include "mixbox.glsl" 20 | 21 | void main(void) { 22 | vec3 rgb1 = vec3(0, 0.129, 0.522); // blue 23 | vec3 rgb2 = vec3(0.988, 0.827, 0); // yellow 24 | float t = 0.5; // mixing ratio 25 | 26 | vec3 rgb = mixbox_lerp(rgb1, rgb2, t); 27 | 28 | gl_FragColor = vec4(rgb, 1.0); 29 | } 30 | `; 31 | 32 | shader = shader.replace('#include "mixbox.glsl"', mixbox.glsl()); 33 | ``` 34 | 35 | ```javascript 36 | gl.useProgram(shaderProgram); 37 | gl.activeTexture(gl.TEXTURE0); 38 | gl.bindTexture(gl.TEXTURE_2D, mixbox.lutTexture(gl)); 39 | gl.uniform1i(gl.getUniformLocation(shaderProgram, "mixbox_lut"), 0); 40 | ``` 41 | 42 | ## Pigment Colors 43 | | Pigment | | RGB | Float RGB | Linear RGB | 44 | | --- | --- |:----:|:----:|:----:| 45 | | Cadmium Yellow | | 254, 236, 0 | 0.996, 0.925, 0.0 | 0.991, 0.839, 0.0 | 46 | | Hansa Yellow | | 252, 211, 0 | 0.988, 0.827, 0.0 | 0.973, 0.651, 0.0 | 47 | | Cadmium Orange | | 255, 105, 0 | 1.0, 0.412, 0.0 | 1.0, 0.141, 0.0 | 48 | | Cadmium Red | | 255, 39, 2 | 1.0, 0.153, 0.008 | 1.0, 0.02, 0.001 | 49 | | Quinacridone Magenta | | 128, 2, 46 | 0.502, 0.008, 0.18 | 0.216, 0.001, 0.027 | 50 | | Cobalt Violet | | 78, 0, 66 | 0.306, 0.0, 0.259 | 0.076, 0.0, 0.054 | 51 | | Ultramarine Blue | | 25, 0, 89 | 0.098, 0.0, 0.349 | 0.01, 0.0, 0.1 | 52 | | Cobalt Blue | | 0, 33, 133 | 0.0, 0.129, 0.522 | 0.0, 0.015, 0.235 | 53 | | Phthalo Blue | | 13, 27, 68 | 0.051, 0.106, 0.267 | 0.004, 0.011, 0.058 | 54 | | Phthalo Green | | 0, 60, 50 | 0.0, 0.235, 0.196 | 0.0, 0.045, 0.032 | 55 | | Permanent Green | | 7, 109, 22 | 0.027, 0.427, 0.086 | 0.002, 0.153, 0.008 | 56 | | Sap Green | | 107, 148, 4 | 0.42, 0.58, 0.016 | 0.147, 0.296, 0.001 | 57 | | Burnt Sienna | | 123, 72, 0 | 0.482, 0.282, 0.0 | 0.198, 0.065, 0.0 | 58 | 59 | ## License 60 | Copyright (c) 2022, Secret Weapons. All rights reserved.
61 | Mixbox is provided under the CC BY-NC 4.0 license for non-commercial use only.
62 | If you want to obtain commercial license, please contact: mixbox@scrtwpns.com 63 | -------------------------------------------------------------------------------- /unity/Textures/MixboxLUT.png.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: 9bb177930f1b0624ebcd9bdad8029652 3 | TextureImporter: 4 | internalIDToNameTable: [] 5 | externalObjects: {} 6 | serializedVersion: 11 7 | mipmaps: 8 | mipMapMode: 0 9 | enableMipMap: 0 10 | sRGBTexture: 0 11 | linearTexture: 0 12 | fadeOut: 0 13 | borderMipMap: 0 14 | mipMapsPreserveCoverage: 0 15 | alphaTestReferenceValue: 0.5 16 | mipMapFadeDistanceStart: 1 17 | mipMapFadeDistanceEnd: 3 18 | bumpmap: 19 | convertToNormalMap: 0 20 | externalNormalMap: 0 21 | heightScale: 0.25 22 | normalMapFilter: 0 23 | isReadable: 0 24 | streamingMipmaps: 0 25 | streamingMipmapsPriority: 0 26 | vTOnly: 0 27 | grayScaleToAlpha: 0 28 | generateCubemap: 6 29 | cubemapConvolution: 0 30 | seamlessCubemap: 0 31 | textureFormat: 1 32 | maxTextureSize: 2048 33 | textureSettings: 34 | serializedVersion: 2 35 | filterMode: 1 36 | aniso: 0 37 | mipBias: 0 38 | wrapU: 1 39 | wrapV: 1 40 | wrapW: 1 41 | nPOTScale: 1 42 | lightmap: 0 43 | compressionQuality: 50 44 | spriteMode: 0 45 | spriteExtrude: 1 46 | spriteMeshType: 1 47 | alignment: 0 48 | spritePivot: {x: 0.5, y: 0.5} 49 | spritePixelsToUnits: 100 50 | spriteBorder: {x: 0, y: 0, z: 0, w: 0} 51 | spriteGenerateFallbackPhysicsShape: 1 52 | alphaUsage: 0 53 | alphaIsTransparency: 0 54 | spriteTessellationDetail: -1 55 | textureType: 0 56 | textureShape: 1 57 | singleChannelComponent: 0 58 | flipbookRows: 1 59 | flipbookColumns: 1 60 | maxTextureSizeSet: 0 61 | compressionQualitySet: 0 62 | textureFormatSet: 0 63 | ignorePngGamma: 0 64 | applyGammaDecoding: 0 65 | platformSettings: 66 | - serializedVersion: 3 67 | buildTarget: DefaultTexturePlatform 68 | maxTextureSize: 4096 69 | resizeAlgorithm: 0 70 | textureFormat: 3 71 | textureCompression: 0 72 | compressionQuality: 50 73 | crunchedCompression: 0 74 | allowsAlphaSplitting: 0 75 | overridden: 0 76 | androidETC2FallbackOverride: 0 77 | forceMaximumCompressionQuality_BC6H_BC7: 0 78 | - serializedVersion: 3 79 | buildTarget: Standalone 80 | maxTextureSize: 4096 81 | resizeAlgorithm: 0 82 | textureFormat: 3 83 | textureCompression: 0 84 | compressionQuality: 50 85 | crunchedCompression: 0 86 | allowsAlphaSplitting: 0 87 | overridden: 0 88 | androidETC2FallbackOverride: 0 89 | forceMaximumCompressionQuality_BC6H_BC7: 0 90 | - serializedVersion: 3 91 | buildTarget: WebGL 92 | maxTextureSize: 4096 93 | resizeAlgorithm: 0 94 | textureFormat: 3 95 | textureCompression: 0 96 | compressionQuality: 50 97 | crunchedCompression: 0 98 | allowsAlphaSplitting: 0 99 | overridden: 0 100 | androidETC2FallbackOverride: 0 101 | forceMaximumCompressionQuality_BC6H_BC7: 0 102 | spriteSheet: 103 | serializedVersion: 2 104 | sprites: [] 105 | outline: [] 106 | physicsShape: [] 107 | bones: [] 108 | spriteID: 109 | internalID: 0 110 | vertices: [] 111 | indices: 112 | edges: [] 113 | weights: [] 114 | secondaryTextures: [] 115 | spritePackingTag: 116 | pSDRemoveMatte: 0 117 | pSDShowRemoveMatteOption: 0 118 | userData: 119 | assetBundleName: 120 | assetBundleVariant: 121 | -------------------------------------------------------------------------------- /csharp/README.md: -------------------------------------------------------------------------------- 1 | # Mixbox for C# 2 | 3 | Install Mixbox from the NuGet package: [`https://www.nuget.org/packages/Mixbox/2.0.0`](https://www.nuget.org/packages/Mixbox/2.0.0) 4 | 5 | ## Usage 6 | 7 | ```csharp 8 | using System.Drawing; 9 | using Scrtwpns.Mixbox; 10 | 11 | public class HelloMixbox 12 | { 13 | public static void Main(string[] args) 14 | { 15 | Color color1 = Color.FromArgb(0, 33, 133); // blue 16 | Color color2 = Color.FromArgb(252, 211, 0); // yellow 17 | float t = 0.5f; // mixing ratio 18 | 19 | Color colorMix = Color.FromArgb(Mixbox.Lerp(color1.ToArgb(), color2.ToArgb(), t)); 20 | 21 | System.Console.WriteLine(colorMix); 22 | } 23 | } 24 | ``` 25 | 26 | ## Mixing Multiple Colors 27 | 28 | ```csharp 29 | Color MixThree(Color color1, Color color2, Color color3) 30 | { 31 | MixboxLatent z1 = Mixbox.RGBToLatent(color1.ToArgb()); 32 | MixboxLatent z2 = Mixbox.RGBToLatent(color2.ToArgb()); 33 | MixboxLatent z3 = Mixbox.RGBToLatent(color3.ToArgb()); 34 | 35 | // mix 30% of color1, 60% of color2, and 10% of color3 36 | MixboxLatent zMix = 0.3f*z1 + 0.6f*z2 + 0.1f*z3; 37 | 38 | return Color.FromArgb(Mixbox.LatentToRGB(zMix)); 39 | } 40 | ``` 41 | 42 | ## Pigment Colors 43 | | Pigment | | RGB | Float RGB | Linear RGB | 44 | | --- | --- |:----:|:----:|:----:| 45 | | Cadmium Yellow | | 254, 236, 0 | 0.996, 0.925, 0.0 | 0.991, 0.839, 0.0 | 46 | | Hansa Yellow | | 252, 211, 0 | 0.988, 0.827, 0.0 | 0.973, 0.651, 0.0 | 47 | | Cadmium Orange | | 255, 105, 0 | 1.0, 0.412, 0.0 | 1.0, 0.141, 0.0 | 48 | | Cadmium Red | | 255, 39, 2 | 1.0, 0.153, 0.008 | 1.0, 0.02, 0.001 | 49 | | Quinacridone Magenta | | 128, 2, 46 | 0.502, 0.008, 0.18 | 0.216, 0.001, 0.027 | 50 | | Cobalt Violet | | 78, 0, 66 | 0.306, 0.0, 0.259 | 0.076, 0.0, 0.054 | 51 | | Ultramarine Blue | | 25, 0, 89 | 0.098, 0.0, 0.349 | 0.01, 0.0, 0.1 | 52 | | Cobalt Blue | | 0, 33, 133 | 0.0, 0.129, 0.522 | 0.0, 0.015, 0.235 | 53 | | Phthalo Blue | | 13, 27, 68 | 0.051, 0.106, 0.267 | 0.004, 0.011, 0.058 | 54 | | Phthalo Green | | 0, 60, 50 | 0.0, 0.235, 0.196 | 0.0, 0.045, 0.032 | 55 | | Permanent Green | | 7, 109, 22 | 0.027, 0.427, 0.086 | 0.002, 0.153, 0.008 | 56 | | Sap Green | | 107, 148, 4 | 0.42, 0.58, 0.016 | 0.147, 0.296, 0.001 | 57 | | Burnt Sienna | | 123, 72, 0 | 0.482, 0.282, 0.0 | 0.198, 0.065, 0.0 | 58 | 59 | ## License 60 | Copyright (c) 2022, Secret Weapons. All rights reserved.
61 | Mixbox is provided under the CC BY-NC 4.0 license for non-commercial use only.
62 | If you want to obtain commercial license, please contact: mixbox@scrtwpns.com 63 | -------------------------------------------------------------------------------- /cpp/mixbox.h: -------------------------------------------------------------------------------- 1 | // ========================================================== 2 | // MIXBOX 2.0 (c) 2022 Secret Weapons. All rights reserved. 3 | // License: Creative Commons Attribution-NonCommercial 4.0 4 | // Authors: Sarka Sochorova and Ondrej Jamriska 5 | // ========================================================== 6 | // 7 | // BASIC USAGE 8 | // 9 | // mixbox_lerp(r1, g1, b1, // 1st color 10 | // r2, g2, b2, // 2nd color 11 | // t, // mixing ratio 12 | // &r, &g, &b); // result 13 | // 14 | // MULTI-COLOR MIXING 15 | // 16 | // mixbox_latent z1, z2, z3, z_mix; 17 | // mixbox_rgb_to_latent(r1, g1, b1, z1); 18 | // mixbox_rgb_to_latent(r2, g2, b2, z2); 19 | // mixbox_rgb_to_latent(r3, g3, b3, z3); 20 | // 21 | // for (int i = 0; i < MIXBOX_LATENT_SIZE; i++) { 22 | // // mix 30% of rgb1, 60% of rgb2, and 10% of rgb3 23 | // z_mix[i] = 0.3f*z1[i] + 0.6f*z2[i] + 0.1f*z3[i]; 24 | // } 25 | // 26 | // mixbox_latent_to_rgb(z_mix, &r, &g, &b); 27 | // 28 | // PIGMENT COLORS 29 | // 30 | // Cadmium Yellow 254, 236, 0 31 | // Hansa Yellow 252, 211, 0 32 | // Cadmium Orange 255, 105, 0 33 | // Cadmium Red 255, 39, 2 34 | // Quinacridone Magenta 128, 2, 46 35 | // Cobalt Violet 78, 0, 66 36 | // Ultramarine Blue 25, 0, 89 37 | // Cobalt Blue 0, 33, 133 38 | // Phthalo Blue 13, 27, 68 39 | // Phthalo Green 0, 60, 50 40 | // Permanent Green 7, 109, 22 41 | // Sap Green 107, 148, 4 42 | // Burnt Sienna 123, 72, 0 43 | // 44 | // LICENSING 45 | // 46 | // If you want to obtain commercial license, please 47 | // contact us at: mixbox@scrtwpns.com 48 | // 49 | 50 | #ifndef MIXBOX_H_ 51 | #define MIXBOX_H_ 52 | 53 | #ifdef __cplusplus 54 | extern "C" { 55 | #endif 56 | 57 | #define MIXBOX_LATENT_SIZE 7 58 | 59 | typedef float mixbox_latent[MIXBOX_LATENT_SIZE]; 60 | 61 | void mixbox_lerp(unsigned char r1, unsigned char g1, unsigned char b1, 62 | unsigned char r2, unsigned char g2, unsigned char b2, 63 | float t, 64 | unsigned char* out_r, unsigned char* out_g, unsigned char* out_b); 65 | 66 | void mixbox_lerp_float(float r1, float g1, float b1, 67 | float r2, float g2, float b2, 68 | float t, 69 | float* out_r, float* out_g, float* out_b); 70 | 71 | void mixbox_lerp_linear_float(float r1, float g1, float b1, 72 | float r2, float g2, float b2, 73 | float t, 74 | float* out_r, float* out_g, float* out_b); 75 | 76 | void mixbox_rgb_to_latent(unsigned char r, unsigned char g, unsigned char b, mixbox_latent out_latent); 77 | void mixbox_latent_to_rgb(mixbox_latent latent, unsigned char* out_r, unsigned char* out_g, unsigned char* out_b); 78 | 79 | void mixbox_float_rgb_to_latent(float r, float g, float b, mixbox_latent out_latent); 80 | void mixbox_latent_to_float_rgb(mixbox_latent latent, float* out_r, float* out_g, float* out_b); 81 | 82 | void mixbox_linear_float_rgb_to_latent(float r, float g, float b, mixbox_latent out_latent); 83 | void mixbox_latent_to_linear_float_rgb(mixbox_latent latent, float* out_r, float* out_g, float* out_b); 84 | 85 | #ifdef __cplusplus 86 | } 87 | #endif 88 | 89 | #endif 90 | -------------------------------------------------------------------------------- /javascript/examples/palette.js: -------------------------------------------------------------------------------- 1 | var visited = []; // coordinates of the boxes the mouse has visited while pressed once 2 | var boxes = []; // all boxes that should be displayed and colored, item is an array [x, y, R, G, B] 3 | let boxSize = 40; 4 | let color1; 5 | let color2; 6 | let valid_start = false; 7 | let valid_end = false; 8 | 9 | function setup() { 10 | 11 | createCanvas(800, 680); 12 | background(80); 13 | colorMode(RGB); 14 | rectMode(CENTER); 15 | 16 | boxes.push([ 60, 60,[ 13, 27, 68]]); // phthalo blue 17 | boxes.push([580, 180,[255, 236, 4]]); // bis yellow 18 | boxes.push([420, 60,[255, 236, 4]]); // bis yellow 19 | boxes.push([220, 300,[255, 208, 0]]); // hansa yellow 20 | boxes.push([420, 380,[ 25, 0, 89]]); // ultramarine blue 21 | boxes.push([500, 260,[ 25, 0, 89]]); // ultramarine blue 22 | boxes.push([700, 380,[225, 35, 1]]); // cadmium red 23 | boxes.push([580, 580,[128, 2, 46]]); // magenta 24 | boxes.push([100, 580,[249, 250, 249]]); // white 25 | boxes.push([260, 580,[249, 250, 249]]); // white 26 | drawBoxes(); 27 | } 28 | 29 | function draw() 30 | { 31 | // record visited boxes 32 | if(mouseIsPressed === true) 33 | { 34 | let x = snapToGrid(mouseX); 35 | let y = snapToGrid(mouseY); 36 | 37 | let alreadyIn = false; 38 | for(let v=0; v 0) 47 | { 48 | stroke(230); 49 | noFill(); 50 | setLineDash([5, 5]); 51 | for(let v=0; v1 ? v * 1.0/(numVisited-1) : 1; 78 | let mixedColor = mixbox.lerp(color1, color2, t); 79 | boxes.push([visited[v][0], visited[v][1], mixedColor]); 80 | } 81 | } 82 | else{alert("You must start and end inside colored squares.");} 83 | } 84 | 85 | 86 | // clear visited array 87 | visited = []; 88 | 89 | // redraw screen to erase the overlay, clear background, draw boxes 90 | background(80); 91 | drawBoxes(); 92 | 93 | } 94 | 95 | function drawBoxes() 96 | { 97 | noStroke(); 98 | for(let b=0; b 0 && mouseX < width && mouseY > 0 && mouseY < height) {return true;} 128 | else {return false}; 129 | } 130 | -------------------------------------------------------------------------------- /unity/ShaderGraph/CustomFunctions/MixboxFunctions.hlsl: -------------------------------------------------------------------------------- 1 | #ifndef MIXBOX_FUNCTIONS_INCLUDED 2 | #define MIXBOX_FUNCTIONS_INCLUDED 3 | 4 | #ifndef UNITY_COLORSPACE_GAMMA 5 | #define MIXBOX_COLORSPACE_LINEAR 6 | #endif 7 | 8 | #define MIXBOX_LUT(UV) SAMPLE_TEXTURE2D_LOD(MixboxLUT.tex, MixboxLUT.samplerstate, UV, 0) 9 | 10 | typedef float3x3 MixboxLatent; 11 | 12 | float3 MixboxEvalPolynomial(float3 c) 13 | { 14 | float c0 = c[0]; 15 | float c1 = c[1]; 16 | float c2 = c[2]; 17 | float c3 = 1.0 - (c0 + c1 + c2); 18 | 19 | float c00 = c0 * c0; 20 | float c11 = c1 * c1; 21 | float c22 = c2 * c2; 22 | float c01 = c0 * c1; 23 | float c02 = c0 * c2; 24 | float c12 = c1 * c2; 25 | float c33 = c3 * c3; 26 | 27 | return (c0*c00) * float3(+0.07717053, +0.02826978, +0.24832992) + 28 | (c1*c11) * float3(+0.95912302, +0.80256528, +0.03561839) + 29 | (c2*c22) * float3(+0.74683774, +0.04868586, +0.00000000) + 30 | (c3*c33) * float3(+0.99518138, +0.99978149, +0.99704802) + 31 | (c00*c1) * float3(+0.04819146, +0.83363781, +0.32515377) + 32 | (c01*c1) * float3(-0.68146950, +1.46107803, +1.06980936) + 33 | (c00*c2) * float3(+0.27058419, -0.15324870, +1.98735057) + 34 | (c02*c2) * float3(+0.80478189, +0.67093710, +0.18424500) + 35 | (c00*c3) * float3(-0.35031003, +1.37855826, +3.68865000) + 36 | (c0*c33) * float3(+1.05128046, +1.97815239, +2.82989073) + 37 | (c11*c2) * float3(+3.21607125, +0.81270228, +1.03384539) + 38 | (c1*c22) * float3(+2.78893374, +0.41565549, -0.04487295) + 39 | (c11*c3) * float3(+3.02162577, +2.55374103, +0.32766114) + 40 | (c1*c33) * float3(+2.95124691, +2.81201112, +1.17578442) + 41 | (c22*c3) * float3(+2.82677043, +0.79933038, +1.81715262) + 42 | (c2*c33) * float3(+2.99691099, +1.22593053, +1.80653661) + 43 | (c01*c2) * float3(+1.87394106, +2.05027182, -0.29835996) + 44 | (c01*c3) * float3(+2.56609566, +7.03428198, +0.62575374) + 45 | (c02*c3) * float3(+4.08329484, -1.40408358, +2.14995522) + 46 | (c12*c3) * float3(+6.00078678, +2.55552042, +1.90739502); 47 | } 48 | 49 | float3 MixboxSRGBToLinear(float3 rgb) 50 | { 51 | return (rgb >= 0.04045) ? pow((abs(rgb) + 0.055) / 1.055, 2.4) : rgb/12.92; 52 | } 53 | 54 | float3 MixboxLinearToSRGB(float3 rgb) 55 | { 56 | return (rgb >= 0.0031308) ? 1.055*pow(abs(rgb), 1.0/2.4) - 0.055 : 12.92*rgb; 57 | } 58 | 59 | MixboxLatent MixboxRGBToLatent(UnityTexture2D MixboxLUT,float3 rgb) 60 | { 61 | #ifdef MIXBOX_COLORSPACE_LINEAR 62 | rgb = MixboxLinearToSRGB(saturate(rgb)); 63 | #else 64 | rgb = saturate(rgb); 65 | #endif 66 | 67 | float x = rgb.r * 63.0; 68 | float y = rgb.g * 63.0; 69 | float z = rgb.b * 63.0; 70 | 71 | float iz = floor(z); 72 | 73 | float x0 = fmod(iz, 8.0) * 64.0; 74 | float y0 = floor(iz / 8.0) * 64.0; 75 | 76 | float x1 = fmod(iz + 1.0, 8.0) * 64.0; 77 | float y1 = floor((iz + 1.0) / 8.0) * 64.0; 78 | 79 | float2 uv0 = float2(x0 + x + 0.5, 512.0 - (y0 + y + 0.5)) / 512.0; 80 | float2 uv1 = float2(x1 + x + 0.5, 512.0 - (y1 + y + 0.5)) / 512.0; 81 | 82 | float3 c = lerp(MIXBOX_LUT(uv0).rgb, MIXBOX_LUT(uv1).rgb, z - iz); 83 | 84 | return MixboxLatent(c, rgb - MixboxEvalPolynomial(c), 0.0, 0.0, 0.0); 85 | } 86 | 87 | float3 MixboxLatentToRGB(MixboxLatent latent) 88 | { 89 | float3 rgb = saturate(MixboxEvalPolynomial(latent[0]) + latent[1]); 90 | 91 | #ifdef MIXBOX_COLORSPACE_LINEAR 92 | return MixboxSRGBToLinear(rgb); 93 | #else 94 | return rgb; 95 | #endif 96 | } 97 | 98 | void MixboxLerp_float(float4 A, float4 B, float T, UnityTexture2D MixboxLUT, out float4 Out) 99 | { 100 | Out = float4(MixboxLatentToRGB((1.0-T)*MixboxRGBToLatent(MixboxLUT, A.rgb) + T*MixboxRGBToLatent(MixboxLUT, B.rgb)), lerp(A.a, B.a, T)); 101 | } 102 | 103 | #endif 104 | -------------------------------------------------------------------------------- /godot/README.md: -------------------------------------------------------------------------------- 1 | # Mixbox for Godot 2 | ```gdscript 3 | var Mixbox = preload("res://addons/mixbox/mixbox.gd") 4 | 5 | var color1 = Color(0.0, 0.129, 0.522) # blue 6 | var color2 = Color(0.988, 0.827, 0.0) # yellow 7 | var t = 0.5 # mixing ratio 8 | 9 | var color_mix = Mixbox.lerp(color1, color2, t) 10 | 11 | print(color_mix) 12 | ``` 13 | 14 | ## Mixing Multiple Colors 15 | ```gdscript 16 | var z1 = Mixbox.rgb_to_latent(color1) 17 | var z2 = Mixbox.rgb_to_latent(color2) 18 | var z3 = Mixbox.rgb_to_latent(color3) 19 | 20 | var z_mix = [] 21 | z_mix.resize(Mixbox.LATENT_SIZE) 22 | 23 | for i in z_mix.size(): # mix together: 24 | z_mix[i] = (0.3*z1[i] + # 30% of color1 25 | 0.6*z2[i] + # 60% of color2 26 | 0.1*z3[i]) # 10% of color3 27 | 28 | var color_mix = Mixbox.latent_to_rgb(z_mix) 29 | ``` 30 | 31 | # Shader 32 | ```c++ 33 | shader_type canvas_item; 34 | 35 | uniform sampler2D mixbox_lut; // attach "addons/mixbox/mixbox_lut.png" here 36 | 37 | uniform vec4 color1 : hint_color = vec4(0.0, 0.129, 0.522, 1.0); // blue 38 | uniform vec4 color2 : hint_color = vec4(0.988, 0.827, 0.0, 1.0); // yellow 39 | 40 | // #include only works in Godot 4, if you are on Godot 3.X 41 | // you will need to paste the Mixbox code here manually. 42 | #include "addons/mixbox/mixbox.gdshaderinc" 43 | 44 | void fragment() { 45 | COLOR = mixbox_lerp(color1, color2, UV.x); 46 | } 47 | ``` 48 |

49 | 50 |

51 | 52 | ## Mixing Multiple Colors 53 | 54 | ```glsl 55 | mat3 z1 = mixbox_rgb_to_latent(color1.rgb); 56 | mat3 z2 = mixbox_rgb_to_latent(color2.rgb); 57 | mat3 z3 = mixbox_rgb_to_latent(color3.rgb); 58 | 59 | // mix together 30% of color1, 60% of color2, and 10% of color3 60 | mat3 z_mix = 0.3*z1 + 0.6*z2 + 0.1*z3; 61 | 62 | vec3 rgb_mix = mixbox_latent_to_rgb(z_mix); 63 | ``` 64 | 65 | # VisualShader 66 |

67 | 68 |

69 | 70 | ## Pigment Colors 71 | | Pigment | | RGB | Float RGB | Linear RGB | 72 | | --- | --- |:----:|:----:|:----:| 73 | | Cadmium Yellow | | 254, 236, 0 | 0.996, 0.925, 0.0 | 0.991, 0.839, 0.0 | 74 | | Hansa Yellow | | 252, 211, 0 | 0.988, 0.827, 0.0 | 0.973, 0.651, 0.0 | 75 | | Cadmium Orange | | 255, 105, 0 | 1.0, 0.412, 0.0 | 1.0, 0.141, 0.0 | 76 | | Cadmium Red | | 255, 39, 2 | 1.0, 0.153, 0.008 | 1.0, 0.02, 0.001 | 77 | | Quinacridone Magenta | | 128, 2, 46 | 0.502, 0.008, 0.18 | 0.216, 0.001, 0.027 | 78 | | Cobalt Violet | | 78, 0, 66 | 0.306, 0.0, 0.259 | 0.076, 0.0, 0.054 | 79 | | Ultramarine Blue | | 25, 0, 89 | 0.098, 0.0, 0.349 | 0.01, 0.0, 0.1 | 80 | | Cobalt Blue | | 0, 33, 133 | 0.0, 0.129, 0.522 | 0.0, 0.015, 0.235 | 81 | | Phthalo Blue | | 13, 27, 68 | 0.051, 0.106, 0.267 | 0.004, 0.011, 0.058 | 82 | | Phthalo Green | | 0, 60, 50 | 0.0, 0.235, 0.196 | 0.0, 0.045, 0.032 | 83 | | Permanent Green | | 7, 109, 22 | 0.027, 0.427, 0.086 | 0.002, 0.153, 0.008 | 84 | | Sap Green | | 107, 148, 4 | 0.42, 0.58, 0.016 | 0.147, 0.296, 0.001 | 85 | | Burnt Sienna | | 123, 72, 0 | 0.482, 0.282, 0.0 | 0.198, 0.065, 0.0 | 86 | 87 | ## License 88 | Copyright (c) 2022, Secret Weapons. All rights reserved.
89 | Mixbox is provided under the CC BY-NC 4.0 license for non-commercial use only.
90 | If you want to obtain commercial license, please contact: mixbox@scrtwpns.com 91 | -------------------------------------------------------------------------------- /javascript/examples/mixer.js: -------------------------------------------------------------------------------- 1 | let width = 650; 2 | let height = 650; 3 | let center_x = width/2; 4 | let center_y = height/2; 5 | let outer_radius = 300; 6 | let inner_radius = 100; 7 | let circle_radius = 45; 8 | var colors = []; 9 | var centers_outside = []; 10 | var centers_inside = []; 11 | var sliders_pos = []; 12 | var mix_t = []; 13 | let numPigments = 0; 14 | let step = 0; 15 | let dragged = -1; 16 | 17 | function setup() { 18 | createCanvas(650, 650); 19 | background(255); 20 | colorMode(RGB); 21 | stroke(125); 22 | strokeWeight(3); 23 | 24 | colors = [color( 255,236,4), color( 252,211,0), color( 255,105,0), color( 225,35,1), color( 191,0,18), color( 128,2,46), color( 78,1,66), color( 74,0,101), color( 16,31,61), color( 13, 27, 68), color( 25, 0, 89), color( 8,34,138), color( 12, 69,118), color( 6, 54, 51), color( 0,74,41), color( 84,50,36), color( 58,39,0), color( 13,9,1), color(249,250,249)]; 25 | 26 | numPigments = colors.length; 27 | step = TWO_PI / numPigments; 28 | 29 | for(let i=0; i -1) 53 | { 54 | mix_t[dragged] = get_t(centers_outside[dragged].x, centers_outside[dragged].y, centers_inside[dragged].x, centers_inside[dragged].y, mouseX, mouseY); 55 | sliders_pos[dragged] = createVector(centers_outside[dragged].x - sin(dragged * step) * mix_t[dragged] * (outer_radius-inner_radius), 56 | centers_outside[dragged].y - cos(dragged * step) * mix_t[dragged] * (outer_radius-inner_radius)); 57 | 58 | background(255); 59 | let weights = 0; 60 | 61 | for(let i=0; i 0.000001) 71 | { 72 | let latent_mix = [0,0,0,0,0,0,0]; 73 | for(let j=0; j0.000001) 76 | { 77 | let latent = mixbox.rgbToLatent(colors[j]); 78 | let t = mix_t[j]/weights; 79 | for(let k=0; k sliders_pos[i].x - circle_radius/2 && 104 | mouseX < sliders_pos[i].x + circle_radius/2 && 105 | mouseY > sliders_pos[i].y - circle_radius/2 && 106 | mouseY < sliders_pos[i].y + circle_radius/2) 107 | { 108 | dragged = i; 109 | } 110 | } 111 | } 112 | 113 | function mouseReleased() 114 | { 115 | dragged = -1; 116 | } 117 | 118 | function get_t (ax, ay, bx, by, qx, qy) 119 | { 120 | let u = createVector(bx-ax, by-ay); 121 | let v = createVector(qx-ax, qy-ay); 122 | 123 | let d = (u.x*v.x + u.y*v.y) / u.mag(); 124 | let t = d/u.mag(); 125 | 126 | return clamp(t, 0.0, 1.0); 127 | } 128 | 129 | function clamp(x, lowerlimit, upperlimit) { 130 | if (xupperlimit){return upperlimit;} 132 | else {return x;} 133 | } 134 | -------------------------------------------------------------------------------- /java/README.md: -------------------------------------------------------------------------------- 1 | # Mixbox for Java 2 | 3 | ```java 4 | import java.awt.Color; 5 | import com.scrtwpns.Mixbox; 6 | 7 | class HelloMixbox { 8 | public static void main(String[] args) { 9 | Color color1 = new Color(0, 33, 133); // blue 10 | Color color2 = new Color(252, 211, 0); // yellow 11 | float t = 0.5f; // mixing ratio 12 | 13 | Color colorMix = new Color(Mixbox.lerp(color1.getRGB(), color2.getRGB(), t)); 14 | 15 | System.out.print(colorMix); 16 | } 17 | } 18 | ``` 19 | 20 | ## Android 21 | ```java 22 | package com.example.mixboxhelloworld; 23 | 24 | import android.app.Activity; 25 | import android.os.Bundle; 26 | import android.view.View; 27 | import android.graphics.Color; 28 | 29 | import com.scrtwpns.Mixbox; 30 | 31 | public class MainActivity extends Activity { 32 | @Override 33 | protected void onCreate(Bundle savedInstanceState) { 34 | super.onCreate(savedInstanceState); 35 | 36 | int color1 = Color.rgb(0, 33, 133); // blue 37 | int color2 = Color.rgb(252, 211, 0); // yellow 38 | float t = 0.5f; // mixing ratio 39 | 40 | int colorMix = Mixbox.lerp(color1, color2, t); 41 | 42 | View view = new View(this); 43 | view.setBackgroundColor(colorMix); 44 | setContentView(view); 45 | } 46 | } 47 | ``` 48 | 49 | ## Mixing Multiple Colors 50 | ```java 51 | int mixThree(int color1, int color2, int color3) { 52 | float[] z1 = Mixbox.rgbToLatent(color1); 53 | float[] z2 = Mixbox.rgbToLatent(color2); 54 | float[] z3 = Mixbox.rgbToLatent(color3); 55 | 56 | float[] zMix = new float[Mixbox.LATENT_SIZE]; 57 | 58 | for(int i = 0; i < zMix.length; i++) { 59 | // mix 30% of color1, 60% of color2, and 10% of color3 60 | zMix[i] = 0.3f*z1[i] + 0.6f*z2[i] + 0.1f*z3[i]; 61 | } 62 | 63 | return Mixbox.latentToRgb(zMix); 64 | } 65 | ``` 66 | 67 | ## Maven 68 | ```xml 69 | 70 | com.scrtwpns 71 | mixbox 72 | 2.0.0 73 | jar 74 | 75 | ``` 76 | 77 | ## Gradle 78 | ```groovy 79 | implementation 'com.scrtwpns:mixbox:2.0.0' // Groovy 80 | ``` 81 | ```kotlin 82 | implementation("com.scrtwpns:mixbox:2.0.0") // Kotlin 83 | ``` 84 | 85 | ## Pigment Colors 86 | | Pigment | | RGB | Float RGB | Linear RGB | 87 | | --- | --- |:----:|:----:|:----:| 88 | | Cadmium Yellow | | 254, 236, 0 | 0.996, 0.925, 0.0 | 0.991, 0.839, 0.0 | 89 | | Hansa Yellow | | 252, 211, 0 | 0.988, 0.827, 0.0 | 0.973, 0.651, 0.0 | 90 | | Cadmium Orange | | 255, 105, 0 | 1.0, 0.412, 0.0 | 1.0, 0.141, 0.0 | 91 | | Cadmium Red | | 255, 39, 2 | 1.0, 0.153, 0.008 | 1.0, 0.02, 0.001 | 92 | | Quinacridone Magenta | | 128, 2, 46 | 0.502, 0.008, 0.18 | 0.216, 0.001, 0.027 | 93 | | Cobalt Violet | | 78, 0, 66 | 0.306, 0.0, 0.259 | 0.076, 0.0, 0.054 | 94 | | Ultramarine Blue | | 25, 0, 89 | 0.098, 0.0, 0.349 | 0.01, 0.0, 0.1 | 95 | | Cobalt Blue | | 0, 33, 133 | 0.0, 0.129, 0.522 | 0.0, 0.015, 0.235 | 96 | | Phthalo Blue | | 13, 27, 68 | 0.051, 0.106, 0.267 | 0.004, 0.011, 0.058 | 97 | | Phthalo Green | | 0, 60, 50 | 0.0, 0.235, 0.196 | 0.0, 0.045, 0.032 | 98 | | Permanent Green | | 7, 109, 22 | 0.027, 0.427, 0.086 | 0.002, 0.153, 0.008 | 99 | | Sap Green | | 107, 148, 4 | 0.42, 0.58, 0.016 | 0.147, 0.296, 0.001 | 100 | | Burnt Sienna | | 123, 72, 0 | 0.482, 0.282, 0.0 | 0.198, 0.065, 0.0 | 101 | 102 | ## License 103 | Copyright (c) 2022, Secret Weapons. All rights reserved.
104 | Mixbox is provided under the CC BY-NC 4.0 license for non-commercial use only.
105 | If you want to obtain commercial license, please contact: mixbox@scrtwpns.com 106 | -------------------------------------------------------------------------------- /javascript/examples/gradients.js: -------------------------------------------------------------------------------- 1 | let colorPicker_A; 2 | let colorPicker_B; 3 | let color_A; 4 | let color_B; 5 | 6 | function setup() { 7 | createCanvas(650, 465); 8 | background(255); 9 | colorMode(RGB); 10 | 11 | colorPicker_A = createColorPicker('#002185'); 12 | colorPicker_A.parent('picker-A'); 13 | color_A = colorPicker_A.color(); 14 | 15 | colorPicker_B = createColorPicker('#fcd200'); 16 | colorPicker_B.parent('picker-B'); 17 | color_B = colorPicker_B.color(); 18 | 19 | drawGradient("Mixbox", color_A, color_B, 50, 200, 65, 465); 20 | drawGradient("RGB", color_A, color_B, 250, 400, 65, 465); 21 | drawGradient("OkLab", color_A, color_B, 450, 600, 65, 465); 22 | 23 | } 24 | 25 | function draw() { 26 | 27 | if(color_A.toString() != colorPicker_A.color().toString() || color_B.toString() != colorPicker_B.color().toString()) 28 | { 29 | background(255); 30 | 31 | color_A = colorPicker_A.color(); 32 | color_B = colorPicker_B.color(); 33 | 34 | drawGradient("Mixbox", color_A, color_B, 50, 200, 65, 465); 35 | drawGradient("RGB", color_A, color_B, 250, 400, 65, 465); 36 | drawGradient("OkLab", color_A, color_B, 450, 600, 65, 465); 37 | } 38 | 39 | } 40 | 41 | function drawGradient(method, color1, color2, x1, x2, y1, y2) 42 | { 43 | textSize(28); 44 | textStyle(BOLD); 45 | fill(79, 118, 123); 46 | text(method, x1 + (x2-x1)/2 - textWidth(method)/2, y1-30); 47 | let mixedColor; 48 | 49 | for (let y = y1; y <= y2; y++) 50 | { 51 | let t = (y-y1)/(y2-y1); 52 | if(match(method, 'Mixbox')) 53 | { 54 | mixedColor = mixbox.lerp(color1, color2, t); 55 | } 56 | else if(match(method, 'RGB')) 57 | { 58 | mixedColor = lerpColor(color1, color2, t); 59 | } 60 | else if(match(method, 'OkLab')) 61 | { 62 | let c1 = [red(color1), green(color1), blue(color1)]; 63 | let c2 = [red(color2), green(color2), blue(color2)]; 64 | let tmp = linear_to_rgb (oklab_to_linear_srgb(linearMix(linear_srgb_to_oklab(rgb_to_linear(c1)),linear_srgb_to_oklab(rgb_to_linear(c2)),t))); 65 | mixedColor = color(tmp[0], tmp[1], tmp[2]); 66 | } 67 | strokeWeight(2); 68 | stroke(mixedColor); 69 | line(x1, y, x2, y); 70 | noStroke(); 71 | } 72 | } 73 | 74 | /* THE FOLLOWING CODE IS HANDLING THE CONVERSION TO OkLAB SPACE */ 75 | /* https://bottosson.github.io/posts/oklab/ */ 76 | 77 | function linear_srgb_to_oklab(c) 78 | { 79 | let l = 0.4122214708 * c[0] + 0.5363325363 * c[1] + 0.0514459929 * c[2]; 80 | let m = 0.2119034982 * c[0] + 0.6806995451 * c[1] + 0.1073969566 * c[2]; 81 | let s = 0.0883024619 * c[0] + 0.2817188376 * c[1] + 0.6299787005 * c[2]; 82 | 83 | let l_ = Math.cbrt(l); 84 | let m_ = Math.cbrt(m); 85 | let s_ = Math.cbrt(s); 86 | 87 | var lab = [ 0.2104542553*l_ + 0.7936177850*m_ - 0.0040720468*s_, 88 | 1.9779984951*l_ - 2.4285922050*m_ + 0.4505937099*s_, 89 | 0.0259040371*l_ + 0.7827717662*m_ - 0.8086757660*s_ ]; 90 | 91 | return lab; 92 | } 93 | 94 | function oklab_to_linear_srgb(c) 95 | { 96 | let l_ = c[0] + 0.3963377774 * c[1] + 0.2158037573 * c[2]; 97 | let m_ = c[0] - 0.1055613458 * c[1] - 0.0638541728 * c[2]; 98 | let s_ = c[0] - 0.0894841775 * c[1] - 1.2914855480 * c[2]; 99 | 100 | let l = l_*l_*l_; 101 | let m = m_*m_*m_; 102 | let s = s_*s_*s_; 103 | 104 | var lrgb = [ 4.0767416621 * l - 3.3077115913 * m + 0.2309699292 * s, 105 | -1.2684380046 * l + 2.6097574011 * m - 0.3413193965 * s, 106 | -0.0041960863 * l - 0.7034186147 * m + 1.7076147010 * s]; 107 | return lrgb; 108 | } 109 | 110 | function rgb_to_linear(rgb) // receiving Color object, returning array of 3 linear RGB values in range 0-1 111 | { 112 | var res = [0,0,0]; 113 | var float_rgb = [rgb[0]/255, rgb[1]/255, rgb[2]/255]; 114 | for (let i = 0; i < 3; ++i) 115 | { 116 | let c = float_rgb[i]; 117 | if (c >= 0.04045) 118 | res[i] = pow((c + 0.055)/(1 + 0.055), 2.4); 119 | else 120 | res[i] = c / 12.92; 121 | } 122 | return res; 123 | } 124 | 125 | function linear_to_rgb(lrgb) // receiving array of 3 linear RGB values, returning an array of gamma encoded RGB values in range 0-255 126 | { 127 | var res = [0,0,0]; 128 | for (let i = 0; i < 3; ++i) 129 | { 130 | let c = lrgb[i]; 131 | if (c >= 0.0031308) 132 | res[i] = 1.055 * pow(c, 1.0/2.4) - 0.055; 133 | else 134 | res[i] = 12.92 * c; 135 | } 136 | return [round(res[0]*255), round(res[1]*255), round(res[2]*255)]; 137 | } 138 | 139 | function linearMix (a, b, t) 140 | { 141 | var res = [0,0,0]; 142 | for(let i=0; i<3; i++) 143 | { 144 | res[i] = a[i] * (1-t) + b[i]*t; 145 | } 146 | return res; 147 | } 148 | -------------------------------------------------------------------------------- /unity/Documentation~/README.md: -------------------------------------------------------------------------------- 1 | # Mixbox for Unity 2 | 3 | Open `Window` > `Package Manager` and choose ` + ` > `Add packge from git URL...`: 4 | ``` 5 | https://github.com/scrtwpns/mixbox.git#upm 6 | ``` 7 | 8 | ## Script 9 | ```csharp 10 | using UnityEngine; 11 | using Scrtwpns.Mixbox; 12 | 13 | public class NewBehaviourScript : MonoBehaviour 14 | { 15 | void Start() 16 | { 17 | Color color1 = new Color(0.0f, 0.129f, 0.522f); // blue 18 | Color color2 = new Color(0.988f, 0.827f, 0.0f); // yellow 19 | float t = 0.5f; // mixing ratio 20 | 21 | Color colorMix = Mixbox.Lerp(color1, color2, t); 22 | 23 | Debug.Log(colorMix); 24 | } 25 | } 26 | ``` 27 | ```csharp 28 | Color MixThree(Color color1, Color color2, Color color3) 29 | { 30 | MixboxLatent z1 = Mixbox.RGBToLatent(color1); 31 | MixboxLatent z2 = Mixbox.RGBToLatent(color2); 32 | MixboxLatent z3 = Mixbox.RGBToLatent(color3); 33 | 34 | // mix 30% of color1, 60% of color2, and 10% of color3 35 | MixboxLatent zMix = 0.3f*z1 + 0.6f*z2 + 0.1f*z3; 36 | 37 | Color colorMix = Mixbox.LatentToRGB(zMix); 38 | 39 | return colorMix; 40 | } 41 | ``` 42 | 43 | ## Shader 44 | ```ShaderLab 45 | Shader "MixboxHelloShader" 46 | { 47 | Properties 48 | { 49 | [NoScaleOffset] _MixboxLUT ("Mixbox LUT", 2D) = "white" {} // assign "Packages/Mixbox/Textures/MixboxLUT.png" 50 | 51 | _Color1 ("Color 1", Color) = (0, 0.129, 0.522, 1) // blue 52 | _Color2 ("Color 2", Color) = (0.988, 0.827, 0, 1) // yellow 53 | } 54 | SubShader 55 | { 56 | Pass 57 | { 58 | CGPROGRAM 59 | #pragma vertex vert 60 | #pragma fragment frag 61 | 62 | #include "UnityCG.cginc" 63 | 64 | sampler2D _MixboxLUT; 65 | #include "Packages/com.scrtwpns.mixbox/ShaderLibrary/Mixbox.cginc" 66 | 67 | fixed4 _Color1; 68 | fixed4 _Color2; 69 | 70 | struct appdata { float4 vertex : POSITION; float2 uv : TEXCOORD0; }; 71 | struct v2f { float2 uv : TEXCOORD0; float4 vertex : SV_POSITION; }; 72 | 73 | v2f vert (appdata v) 74 | { 75 | v2f o; 76 | o.vertex = UnityObjectToClipPos(v.vertex); 77 | o.uv = v.uv; 78 | return o; 79 | } 80 | 81 | fixed4 frag (v2f i) : SV_Target 82 | { 83 | return MixboxLerp(_Color1, _Color2, i.uv.x); 84 | } 85 | ENDCG 86 | } 87 | } 88 | } 89 | ``` 90 | ```hlsl 91 | float3 MixThree(float3 rgb1, float3 rgb2, float3 rgb3) 92 | { 93 | MixboxLatent z1 = MixboxRGBToLatent(rgb1); 94 | MixboxLatent z2 = MixboxRGBToLatent(rgb2); 95 | MixboxLatent z3 = MixboxRGBToLatent(rgb3); 96 | 97 | // mix together 30% of rgb1, 60% of rgb2, and 10% of rgb3 98 | MixboxLatent zMix = 0.3*z1 + 0.6*z2 + 0.1*z3; 99 | 100 | float3 rgbMix = MixboxLatentToRGB(zMix); 101 | 102 | return rgbMix; 103 | } 104 | ``` 105 |

106 | 107 |

108 | 109 | ## URP Shader 110 | ```ShaderLab 111 | Shader "Mixbox/Mixbox URP Sample Shader" 112 | { 113 | Properties 114 | { 115 | [NoScaleOffset] _MixboxLUT ("Mixbox LUT", 2D) = "white" {} // assign "Packages/Mixbox/Textures/MixboxLUT.png" 116 | 117 | _Color1 ("Color 1", Color) = (0, 0.129, 0.522, 1) // blue 118 | _Color2 ("Color 2", Color) = (0.988, 0.827, 0, 1) // yellow 119 | } 120 | 121 | SubShader 122 | { 123 | Tags { "RenderType" = "Opaque" "RenderPipeline" = "UniversalRenderPipeline" } 124 | 125 | Pass 126 | { 127 | HLSLPROGRAM 128 | #pragma vertex vert 129 | #pragma fragment frag 130 | 131 | #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl" 132 | 133 | TEXTURE2D(_MixboxLUT); 134 | SAMPLER(sampler_MixboxLUT); 135 | 136 | #include "Packages/com.scrtwpns.mixbox/ShaderLibrary/Mixbox.hlsl" 137 | 138 | struct Attributes { float4 positionOS : POSITION; float2 uv : TEXCOORD0; }; 139 | struct Varyings { float4 positionHCS : SV_POSITION; float2 uv : TEXCOORD0; }; 140 | 141 | CBUFFER_START(UnityPerMaterial) 142 | half4 _Color1; 143 | half4 _Color2; 144 | CBUFFER_END 145 | 146 | Varyings vert(Attributes IN) 147 | { 148 | Varyings OUT; 149 | OUT.positionHCS = TransformObjectToHClip(IN.positionOS.xyz); 150 | OUT.uv = IN.uv; 151 | return OUT; 152 | } 153 | 154 | half4 frag(Varyings IN) : SV_Target 155 | { 156 | return MixboxLerp(_Color1, _Color2, IN.uv.x); 157 | } 158 | ENDHLSL 159 | } 160 | } 161 | } 162 | ``` 163 | 164 | ## Shader Graph 165 |

166 | 167 |

168 | -------------------------------------------------------------------------------- /godot/addons/mixbox/mixbox.gdshaderinc: -------------------------------------------------------------------------------- 1 | // ========================================================== 2 | // MIXBOX 2.0 (c) 2022 Secret Weapons. All rights reserved. 3 | // License: Creative Commons Attribution-NonCommercial 4.0 4 | // Authors: Sarka Sochorova and Ondrej Jamriska 5 | // ========================================================== 6 | // 7 | // BASIC USAGE 8 | // 9 | // vec3 rgb = mixbox_lerp(rgb1, rgb2, t); 10 | // 11 | // MULTI-COLOR MIXING 12 | // 13 | // mat3 z1 = mixbox_rgb_to_latent(rgb1); 14 | // mat3 z2 = mixbox_rgb_to_latent(rgb2); 15 | // mat3 z3 = mixbox_rgb_to_latent(rgb3); 16 | // 17 | // // mix 30% of rgb1, 60% of rgb2, and 10% of rgb3 18 | // mat3 z_mix = 0.3*z1 + 0.6*z2 + 0.1*z3; 19 | // 20 | // vec3 rgb_mix = mixbox_latent_to_rgb(z_mix); 21 | // 22 | // PIGMENT COLORS 23 | // 24 | // Cadmium Yellow 0.996, 0.925, 0.000 25 | // Hansa Yellow 0.988, 0.827, 0.000 26 | // Cadmium Orange 1.000, 0.412, 0.000 27 | // Cadmium Red 1.000, 0.153, 0.008 28 | // Quinacridone Magenta 0.502, 0.008, 0.180 29 | // Cobalt Violet 0.306, 0.000, 0.259 30 | // Ultramarine Blue 0.098, 0.000, 0.349 31 | // Cobalt Blue 0.000, 0.129, 0.522 32 | // Phthalo Blue 0.051, 0.106, 0.267 33 | // Phthalo Green 0.000, 0.235, 0.196 34 | // Permanent Green 0.027, 0.427, 0.086 35 | // Sap Green 0.420, 0.580, 0.016 36 | // Burnt Sienna 0.482, 0.282, 0.000 37 | // 38 | // LICENSING 39 | // 40 | // If you want to obtain commercial license, please 41 | // contact us at: mixbox@scrtwpns.com 42 | // 43 | 44 | vec3 _mixbox_eval_polynomial(vec3 _mixbox_c) { 45 | float _mixbox_c0 = _mixbox_c[0]; 46 | float _mixbox_c1 = _mixbox_c[1]; 47 | float _mixbox_c2 = _mixbox_c[2]; 48 | float _mixbox_c3 = 1.0 - (_mixbox_c0 + _mixbox_c1 + _mixbox_c2); 49 | 50 | float _mixbox_c00 = _mixbox_c0 * _mixbox_c0; 51 | float _mixbox_c11 = _mixbox_c1 * _mixbox_c1; 52 | float _mixbox_c22 = _mixbox_c2 * _mixbox_c2; 53 | float _mixbox_c01 = _mixbox_c0 * _mixbox_c1; 54 | float _mixbox_c02 = _mixbox_c0 * _mixbox_c2; 55 | float _mixbox_c12 = _mixbox_c1 * _mixbox_c2; 56 | float _mixbox_c33 = _mixbox_c3 * _mixbox_c3; 57 | 58 | return ( 59 | (_mixbox_c0 * _mixbox_c00) * vec3(+0.07717053, +0.02826978, +0.24832992) + 60 | (_mixbox_c1 * _mixbox_c11) * vec3(+0.95912302, +0.80256528, +0.03561839) + 61 | (_mixbox_c2 * _mixbox_c22) * vec3(+0.74683774, +0.04868586, +0.00000000) + 62 | (_mixbox_c3 * _mixbox_c33) * vec3(+0.99518138, +0.99978149, +0.99704802) + 63 | (_mixbox_c00 * _mixbox_c1) * vec3(+0.04819146, +0.83363781, +0.32515377) + 64 | (_mixbox_c01 * _mixbox_c1) * vec3(-0.68146950, +1.46107803, +1.06980936) + 65 | (_mixbox_c00 * _mixbox_c2) * vec3(+0.27058419, -0.15324870, +1.98735057) + 66 | (_mixbox_c02 * _mixbox_c2) * vec3(+0.80478189, +0.67093710, +0.18424500) + 67 | (_mixbox_c00 * _mixbox_c3) * vec3(-0.35031003, +1.37855826, +3.68865000) + 68 | (_mixbox_c0 * _mixbox_c33) * vec3(+1.05128046, +1.97815239, +2.82989073) + 69 | (_mixbox_c11 * _mixbox_c2) * vec3(+3.21607125, +0.81270228, +1.03384539) + 70 | (_mixbox_c1 * _mixbox_c22) * vec3(+2.78893374, +0.41565549, -0.04487295) + 71 | (_mixbox_c11 * _mixbox_c3) * vec3(+3.02162577, +2.55374103, +0.32766114) + 72 | (_mixbox_c1 * _mixbox_c33) * vec3(+2.95124691, +2.81201112, +1.17578442) + 73 | (_mixbox_c22 * _mixbox_c3) * vec3(+2.82677043, +0.79933038, +1.81715262) + 74 | (_mixbox_c2 * _mixbox_c33) * vec3(+2.99691099, +1.22593053, +1.80653661) + 75 | (_mixbox_c01 * _mixbox_c2) * vec3(+1.87394106, +2.05027182, -0.29835996) + 76 | (_mixbox_c01 * _mixbox_c3) * vec3(+2.56609566, +7.03428198, +0.62575374) + 77 | (_mixbox_c02 * _mixbox_c3) * vec3(+4.08329484, -1.40408358, +2.14995522) + 78 | (_mixbox_c12 * _mixbox_c3) * vec3(+6.00078678, +2.55552042, +1.90739502)); 79 | } 80 | 81 | mat3 mixbox_rgb_to_latent(vec3 _mixbox_rgb) { 82 | _mixbox_rgb = clamp(_mixbox_rgb, 0.0, 1.0); 83 | 84 | float _mixbox_x = _mixbox_rgb.r * 63.0; 85 | float _mixbox_y = _mixbox_rgb.g * 63.0; 86 | float _mixbox_z = _mixbox_rgb.b * 63.0; 87 | 88 | float _mixbox_iz = floor(_mixbox_z); 89 | 90 | float _mixbox_x0 = mod(_mixbox_iz, 8.0) * 64.0; 91 | float _mixbox_y0 = floor(_mixbox_iz / 8.0) * 64.0; 92 | 93 | float _mixbox_x1 = mod(_mixbox_iz + 1.0, 8.0) * 64.0; 94 | float _mixbox_y1 = floor((_mixbox_iz + 1.0) / 8.0) * 64.0; 95 | 96 | vec2 _mixbox_uv0 = vec2(_mixbox_x0 + _mixbox_x + 0.5, _mixbox_y0 + _mixbox_y + 0.5) / 512.0; 97 | vec2 _mixbox_uv1 = vec2(_mixbox_x1 + _mixbox_x + 0.5, _mixbox_y1 + _mixbox_y + 0.5) / 512.0; 98 | 99 | vec3 _mixbox_c = mix(textureLod(mixbox_lut, _mixbox_uv0, 0.0).rgb, textureLod(mixbox_lut, _mixbox_uv1, 0.0).rgb, _mixbox_z - _mixbox_iz); 100 | 101 | return mat3(_mixbox_c, _mixbox_rgb - _mixbox_eval_polynomial(_mixbox_c), vec3(0.0)); 102 | } 103 | 104 | vec3 mixbox_latent_to_rgb(mat3 _mixbox_latent) { 105 | return clamp(_mixbox_eval_polynomial(_mixbox_latent[0]) + _mixbox_latent[1], 0.0, 1.0); 106 | } 107 | 108 | vec4 mixbox_lerp(vec4 _mixbox_color1, vec4 _mixbox_color2, float _mixbox_t) { 109 | return vec4(mixbox_latent_to_rgb((1.0-_mixbox_t)*mixbox_rgb_to_latent(_mixbox_color1.rgb) + _mixbox_t*mixbox_rgb_to_latent(_mixbox_color2.rgb)), mix(_mixbox_color1.a, _mixbox_color2.a, _mixbox_t)); 110 | } 111 | -------------------------------------------------------------------------------- /javascript/README.md: -------------------------------------------------------------------------------- 1 | # Mixbox for Javascript 2 | 3 | ```html 4 | 5 | ``` 6 | ```javascript 7 | import mixbox from 'https://scrtwpns.com/mixbox.esm.js'; // for ES6 module use this instead 8 | ``` 9 | 10 | ### Node 11 | ``` 12 | npm install mixbox 13 | ``` 14 | ```javascript 15 | import mixbox from 'mixbox'; 16 | ``` 17 | 18 | ## Usage 19 | ```javascript 20 | var rgb1 = "rgb(0, 33, 133)"; // blue 21 | var rgb2 = "rgb(252, 211, 0)"; // yellow 22 | var t = 0.5; // mixing ratio 23 | 24 | var mixed = mixbox.lerp(rgb1, rgb2, t); 25 | 26 | console.log(mixed); 27 | ``` 28 | 29 | ## Mixing Multiple Colors 30 | ```javascript 31 | var z1 = mixbox.rgbToLatent(rgb1); 32 | var z2 = mixbox.rgbToLatent(rgb2); 33 | var z3 = mixbox.rgbToLatent(rgb3); 34 | 35 | var zMix = new Array(mixbox.LATENT_SIZE); 36 | 37 | for (var i = 0; i < zMix.length; i++) { // mix: 38 | zMix[i] = (0.3*z1[i] + // 30% of rgb1 39 | 0.6*z2[i] + // 60% of rgb2 40 | 0.1*z3[i]); // 10% of rgb3 41 | } 42 | 43 | var rgbMix = mixbox.latentToRgb(zMix); 44 | ``` 45 | 46 | ## Pigment Colors 47 | | Pigment | | RGB | Float RGB | Linear RGB | 48 | | --- | --- |:----:|:----:|:----:| 49 | | Cadmium Yellow | | 254, 236, 0 | 0.996, 0.925, 0.0 | 0.991, 0.839, 0.0 | 50 | | Hansa Yellow | | 252, 211, 0 | 0.988, 0.827, 0.0 | 0.973, 0.651, 0.0 | 51 | | Cadmium Orange | | 255, 105, 0 | 1.0, 0.412, 0.0 | 1.0, 0.141, 0.0 | 52 | | Cadmium Red | | 255, 39, 2 | 1.0, 0.153, 0.008 | 1.0, 0.02, 0.001 | 53 | | Quinacridone Magenta | | 128, 2, 46 | 0.502, 0.008, 0.18 | 0.216, 0.001, 0.027 | 54 | | Cobalt Violet | | 78, 0, 66 | 0.306, 0.0, 0.259 | 0.076, 0.0, 0.054 | 55 | | Ultramarine Blue | | 25, 0, 89 | 0.098, 0.0, 0.349 | 0.01, 0.0, 0.1 | 56 | | Cobalt Blue | | 0, 33, 133 | 0.0, 0.129, 0.522 | 0.0, 0.015, 0.235 | 57 | | Phthalo Blue | | 13, 27, 68 | 0.051, 0.106, 0.267 | 0.004, 0.011, 0.058 | 58 | | Phthalo Green | | 0, 60, 50 | 0.0, 0.235, 0.196 | 0.0, 0.045, 0.032 | 59 | | Permanent Green | | 7, 109, 22 | 0.027, 0.427, 0.086 | 0.002, 0.153, 0.008 | 60 | | Sap Green | | 107, 148, 4 | 0.42, 0.58, 0.016 | 0.147, 0.296, 0.001 | 61 | | Burnt Sienna | | 123, 72, 0 | 0.482, 0.282, 0.0 | 0.198, 0.065, 0.0 | 62 | 63 | ## Mixbox in WebGL 64 | ```javascript 65 | var shader = ` 66 | precision highp float; 67 | 68 | // uncomment the following line if you work in linear space 69 | // #define MIXBOX_COLORSPACE_LINEAR 70 | 71 | uniform sampler2D mixbox_lut; // bind mixbox.lutTexture(gl) here 72 | 73 | #include "mixbox.glsl" 74 | 75 | void main(void) { 76 | vec3 rgb1 = vec3(0, 0.129, 0.522); // blue 77 | vec3 rgb2 = vec3(0.988, 0.827, 0); // yellow 78 | float t = 0.5; // mixing ratio 79 | 80 | vec3 rgb = mixbox_lerp(rgb1, rgb2, t); 81 | 82 | gl_FragColor = vec4(rgb, 1.0); 83 | } 84 | `; 85 | 86 | shader = shader.replace('#include "mixbox.glsl"', mixbox.glsl()); 87 | ``` 88 | 89 | ```javascript 90 | gl.useProgram(shaderProgram); 91 | gl.activeTexture(gl.TEXTURE0); 92 | gl.bindTexture(gl.TEXTURE_2D, mixbox.lutTexture(gl)); 93 | gl.uniform1i(gl.getUniformLocation(shaderProgram, "mixbox_lut"), 0); 94 | ``` 95 | 96 | ## Examples 97 | 98 | | Gradients | Mountains | Palette Snakes | 99 | |:---:|:---:|:---:| 100 | | | | | 101 | | [source code](examples/gradients.js) | [source code](examples/mountains.js) | [source code](examples/palette.js) | 102 | 103 | | Splash Art | Paint Mixer | Pigment Fluids | 104 | |:---:|:---:|:---:| 105 | | | | | 106 | | [source code](examples/splash.html) | [source code](examples/mixer.js) | [source code](https://scrtwpns.com/mixbox/fluids/script.js) | 107 | 108 | 109 | ## License 110 | Copyright (c) 2022, Secret Weapons. All rights reserved.
111 | Mixbox is provided under the CC BY-NC 4.0 license for non-commercial use only.
112 | If you want to obtain commercial license, please contact: mixbox@scrtwpns.com 113 | -------------------------------------------------------------------------------- /godot/addons/mixbox/mixbox.gdshader: -------------------------------------------------------------------------------- 1 | // ========================================================== 2 | // MIXBOX 2.0 (c) 2022 Secret Weapons. All rights reserved. 3 | // License: Creative Commons Attribution-NonCommercial 4.0 4 | // Authors: Sarka Sochorova and Ondrej Jamriska 5 | // ========================================================== 6 | // 7 | // BASIC USAGE 8 | // 9 | // vec3 rgb = mixbox_lerp(rgb1, rgb2, t); 10 | // 11 | // MULTI-COLOR MIXING 12 | // 13 | // mat3 z1 = mixbox_rgb_to_latent(rgb1); 14 | // mat3 z2 = mixbox_rgb_to_latent(rgb2); 15 | // mat3 z3 = mixbox_rgb_to_latent(rgb3); 16 | // 17 | // // mix 30% of rgb1, 60% of rgb2, and 10% of rgb3 18 | // mat3 z_mix = 0.3*z1 + 0.6*z2 + 0.1*z3; 19 | // 20 | // vec3 rgb_mix = mixbox_latent_to_rgb(z_mix); 21 | // 22 | // PIGMENT COLORS 23 | // 24 | // Cadmium Yellow 0.996, 0.925, 0.000 25 | // Hansa Yellow 0.988, 0.827, 0.000 26 | // Cadmium Orange 1.000, 0.412, 0.000 27 | // Cadmium Red 1.000, 0.153, 0.008 28 | // Quinacridone Magenta 0.502, 0.008, 0.180 29 | // Cobalt Violet 0.306, 0.000, 0.259 30 | // Ultramarine Blue 0.098, 0.000, 0.349 31 | // Cobalt Blue 0.000, 0.129, 0.522 32 | // Phthalo Blue 0.051, 0.106, 0.267 33 | // Phthalo Green 0.000, 0.235, 0.196 34 | // Permanent Green 0.027, 0.427, 0.086 35 | // Sap Green 0.420, 0.580, 0.016 36 | // Burnt Sienna 0.482, 0.282, 0.000 37 | // 38 | // LICENSING 39 | // 40 | // If you want to obtain commercial license, please 41 | // contact us at: mixbox@scrtwpns.com 42 | // 43 | 44 | shader_type canvas_item; 45 | 46 | uniform sampler2D mixbox_lut; // attach "addons/mixbox/mixbox_lut.png" here 47 | 48 | uniform vec4 color1 : hint_color = vec4(0.0, 0.129, 0.522, 1.0); // blue 49 | uniform vec4 color2 : hint_color = vec4(0.988, 0.827, 0.0, 1.0); // yellow 50 | 51 | vec3 _mixbox_eval_polynomial(vec3 _mixbox_c) { 52 | float _mixbox_c0 = _mixbox_c[0]; 53 | float _mixbox_c1 = _mixbox_c[1]; 54 | float _mixbox_c2 = _mixbox_c[2]; 55 | float _mixbox_c3 = 1.0 - (_mixbox_c0 + _mixbox_c1 + _mixbox_c2); 56 | 57 | float _mixbox_c00 = _mixbox_c0 * _mixbox_c0; 58 | float _mixbox_c11 = _mixbox_c1 * _mixbox_c1; 59 | float _mixbox_c22 = _mixbox_c2 * _mixbox_c2; 60 | float _mixbox_c01 = _mixbox_c0 * _mixbox_c1; 61 | float _mixbox_c02 = _mixbox_c0 * _mixbox_c2; 62 | float _mixbox_c12 = _mixbox_c1 * _mixbox_c2; 63 | float _mixbox_c33 = _mixbox_c3 * _mixbox_c3; 64 | 65 | return ( 66 | (_mixbox_c0 * _mixbox_c00) * vec3(+0.07717053, +0.02826978, +0.24832992) + 67 | (_mixbox_c1 * _mixbox_c11) * vec3(+0.95912302, +0.80256528, +0.03561839) + 68 | (_mixbox_c2 * _mixbox_c22) * vec3(+0.74683774, +0.04868586, +0.00000000) + 69 | (_mixbox_c3 * _mixbox_c33) * vec3(+0.99518138, +0.99978149, +0.99704802) + 70 | (_mixbox_c00 * _mixbox_c1) * vec3(+0.04819146, +0.83363781, +0.32515377) + 71 | (_mixbox_c01 * _mixbox_c1) * vec3(-0.68146950, +1.46107803, +1.06980936) + 72 | (_mixbox_c00 * _mixbox_c2) * vec3(+0.27058419, -0.15324870, +1.98735057) + 73 | (_mixbox_c02 * _mixbox_c2) * vec3(+0.80478189, +0.67093710, +0.18424500) + 74 | (_mixbox_c00 * _mixbox_c3) * vec3(-0.35031003, +1.37855826, +3.68865000) + 75 | (_mixbox_c0 * _mixbox_c33) * vec3(+1.05128046, +1.97815239, +2.82989073) + 76 | (_mixbox_c11 * _mixbox_c2) * vec3(+3.21607125, +0.81270228, +1.03384539) + 77 | (_mixbox_c1 * _mixbox_c22) * vec3(+2.78893374, +0.41565549, -0.04487295) + 78 | (_mixbox_c11 * _mixbox_c3) * vec3(+3.02162577, +2.55374103, +0.32766114) + 79 | (_mixbox_c1 * _mixbox_c33) * vec3(+2.95124691, +2.81201112, +1.17578442) + 80 | (_mixbox_c22 * _mixbox_c3) * vec3(+2.82677043, +0.79933038, +1.81715262) + 81 | (_mixbox_c2 * _mixbox_c33) * vec3(+2.99691099, +1.22593053, +1.80653661) + 82 | (_mixbox_c01 * _mixbox_c2) * vec3(+1.87394106, +2.05027182, -0.29835996) + 83 | (_mixbox_c01 * _mixbox_c3) * vec3(+2.56609566, +7.03428198, +0.62575374) + 84 | (_mixbox_c02 * _mixbox_c3) * vec3(+4.08329484, -1.40408358, +2.14995522) + 85 | (_mixbox_c12 * _mixbox_c3) * vec3(+6.00078678, +2.55552042, +1.90739502)); 86 | } 87 | 88 | mat3 mixbox_rgb_to_latent(vec3 _mixbox_rgb) { 89 | _mixbox_rgb = clamp(_mixbox_rgb, 0.0, 1.0); 90 | 91 | float _mixbox_x = _mixbox_rgb.r * 63.0; 92 | float _mixbox_y = _mixbox_rgb.g * 63.0; 93 | float _mixbox_z = _mixbox_rgb.b * 63.0; 94 | 95 | float _mixbox_iz = floor(_mixbox_z); 96 | 97 | float _mixbox_x0 = mod(_mixbox_iz, 8.0) * 64.0; 98 | float _mixbox_y0 = floor(_mixbox_iz / 8.0) * 64.0; 99 | 100 | float _mixbox_x1 = mod(_mixbox_iz + 1.0, 8.0) * 64.0; 101 | float _mixbox_y1 = floor((_mixbox_iz + 1.0) / 8.0) * 64.0; 102 | 103 | vec2 _mixbox_uv0 = vec2(_mixbox_x0 + _mixbox_x + 0.5, _mixbox_y0 + _mixbox_y + 0.5) / 512.0; 104 | vec2 _mixbox_uv1 = vec2(_mixbox_x1 + _mixbox_x + 0.5, _mixbox_y1 + _mixbox_y + 0.5) / 512.0; 105 | 106 | vec3 _mixbox_c = mix(textureLod(mixbox_lut, _mixbox_uv0, 0.0).rgb, textureLod(mixbox_lut, _mixbox_uv1, 0.0).rgb, _mixbox_z - _mixbox_iz); 107 | 108 | return mat3(_mixbox_c, _mixbox_rgb - _mixbox_eval_polynomial(_mixbox_c), vec3(0.0)); 109 | } 110 | 111 | vec3 mixbox_latent_to_rgb(mat3 _mixbox_latent) { 112 | return clamp(_mixbox_eval_polynomial(_mixbox_latent[0]) + _mixbox_latent[1], 0.0, 1.0); 113 | } 114 | 115 | vec4 mixbox_lerp(vec4 _mixbox_color1, vec4 _mixbox_color2, float _mixbox_t) { 116 | return vec4(mixbox_latent_to_rgb((1.0-_mixbox_t)*mixbox_rgb_to_latent(_mixbox_color1.rgb) + _mixbox_t*mixbox_rgb_to_latent(_mixbox_color2.rgb)), mix(_mixbox_color1.a, _mixbox_color2.a, _mixbox_t)); 117 | } 118 | 119 | void fragment() { 120 | COLOR = mixbox_lerp(color1, color2, UV.x); 121 | } 122 | -------------------------------------------------------------------------------- /shaders/mixbox.hlsl: -------------------------------------------------------------------------------- 1 | // ========================================================== 2 | // MIXBOX 2.0 (c) 2022 Secret Weapons. All rights reserved. 3 | // License: Creative Commons Attribution-NonCommercial 4.0 4 | // Authors: Sarka Sochorova and Ondrej Jamriska 5 | // ========================================================== 6 | // 7 | // BASIC USAGE 8 | // 9 | // float3 rgb = MixboxLerp(rgb1, rgb2, t); 10 | // 11 | // MULTI-COLOR MIXING 12 | // 13 | // MixboxLatent z1 = MixboxRGBToLatent(rgb1); 14 | // MixboxLatent z2 = MixboxRGBToLatent(rgb2); 15 | // MixboxLatent z3 = MixboxRGBToLatent(rgb3); 16 | // 17 | // // mix 30% of rgb1, 60% of rgb2, and 10% of rgb3 18 | // MixboxLatent z_mix = 0.3*z1 + 0.6*z2 + 0.1*z3; 19 | // 20 | // float3 rgb_mix = MixboxLatentToRGB(z_mix); 21 | // 22 | // PIGMENT COLORS 23 | // 24 | // Cadmium Yellow 0.996, 0.925, 0.000 25 | // Hansa Yellow 0.988, 0.827, 0.000 26 | // Cadmium Orange 1.000, 0.412, 0.000 27 | // Cadmium Red 1.000, 0.153, 0.008 28 | // Quinacridone Magenta 0.502, 0.008, 0.180 29 | // Cobalt Violet 0.306, 0.000, 0.259 30 | // Ultramarine Blue 0.098, 0.000, 0.349 31 | // Cobalt Blue 0.000, 0.129, 0.522 32 | // Phthalo Blue 0.051, 0.106, 0.267 33 | // Phthalo Green 0.000, 0.235, 0.196 34 | // Permanent Green 0.027, 0.427, 0.086 35 | // Sap Green 0.420, 0.580, 0.016 36 | // Burnt Sienna 0.482, 0.282, 0.000 37 | // 38 | // LICENSING 39 | // 40 | // If you want to obtain commercial license, please 41 | // contact us at: mixbox@scrtwpns.com 42 | // 43 | 44 | #ifndef MIXBOX_INCLUDED 45 | #define MIXBOX_INCLUDED 46 | 47 | #ifndef MIXBOX_LUT 48 | #define MIXBOX_LUT(UV) MixboxLUT.SampleLevel(MixboxSampler, UV, 0) 49 | #endif 50 | 51 | typedef float3x3 MixboxLatent; 52 | 53 | float3 MixboxEvalPolynomial(float3 c) 54 | { 55 | float c0 = c[0]; 56 | float c1 = c[1]; 57 | float c2 = c[2]; 58 | float c3 = 1.0 - (c0 + c1 + c2); 59 | 60 | float c00 = c0 * c0; 61 | float c11 = c1 * c1; 62 | float c22 = c2 * c2; 63 | float c01 = c0 * c1; 64 | float c02 = c0 * c2; 65 | float c12 = c1 * c2; 66 | float c33 = c3 * c3; 67 | 68 | return (c0*c00) * float3(+0.07717053, +0.02826978, +0.24832992) + 69 | (c1*c11) * float3(+0.95912302, +0.80256528, +0.03561839) + 70 | (c2*c22) * float3(+0.74683774, +0.04868586, +0.00000000) + 71 | (c3*c33) * float3(+0.99518138, +0.99978149, +0.99704802) + 72 | (c00*c1) * float3(+0.04819146, +0.83363781, +0.32515377) + 73 | (c01*c1) * float3(-0.68146950, +1.46107803, +1.06980936) + 74 | (c00*c2) * float3(+0.27058419, -0.15324870, +1.98735057) + 75 | (c02*c2) * float3(+0.80478189, +0.67093710, +0.18424500) + 76 | (c00*c3) * float3(-0.35031003, +1.37855826, +3.68865000) + 77 | (c0*c33) * float3(+1.05128046, +1.97815239, +2.82989073) + 78 | (c11*c2) * float3(+3.21607125, +0.81270228, +1.03384539) + 79 | (c1*c22) * float3(+2.78893374, +0.41565549, -0.04487295) + 80 | (c11*c3) * float3(+3.02162577, +2.55374103, +0.32766114) + 81 | (c1*c33) * float3(+2.95124691, +2.81201112, +1.17578442) + 82 | (c22*c3) * float3(+2.82677043, +0.79933038, +1.81715262) + 83 | (c2*c33) * float3(+2.99691099, +1.22593053, +1.80653661) + 84 | (c01*c2) * float3(+1.87394106, +2.05027182, -0.29835996) + 85 | (c01*c3) * float3(+2.56609566, +7.03428198, +0.62575374) + 86 | (c02*c3) * float3(+4.08329484, -1.40408358, +2.14995522) + 87 | (c12*c3) * float3(+6.00078678, +2.55552042, +1.90739502); 88 | } 89 | 90 | float3 MixboxSRGBToLinear(float3 rgb) 91 | { 92 | return (rgb >= 0.04045) ? pow((abs(rgb) + 0.055) / 1.055, 2.4) : rgb/12.92; 93 | } 94 | 95 | float3 MixboxLinearToSRGB(float3 rgb) 96 | { 97 | return (rgb >= 0.0031308) ? 1.055*pow(abs(rgb), 1.0/2.4) - 0.055 : 12.92*rgb; 98 | } 99 | 100 | MixboxLatent MixboxRGBToLatent(float3 rgb) 101 | { 102 | #ifdef MIXBOX_COLORSPACE_LINEAR 103 | rgb = MixboxLinearToSRGB(saturate(rgb)); 104 | #else 105 | rgb = saturate(rgb); 106 | #endif 107 | 108 | float x = rgb.r * 63.0; 109 | float y = rgb.g * 63.0; 110 | float z = rgb.b * 63.0; 111 | 112 | float iz = floor(z); 113 | 114 | float x0 = fmod(iz, 8.0) * 64.0; 115 | float y0 = floor(iz / 8.0) * 64.0; 116 | 117 | float x1 = fmod(iz + 1.0, 8.0) * 64.0; 118 | float y1 = floor((iz + 1.0) / 8.0) * 64.0; 119 | 120 | float2 uv0 = float2(x0 + x + 0.5, 512.0 - (y0 + y + 0.5)) / 512.0; 121 | float2 uv1 = float2(x1 + x + 0.5, 512.0 - (y1 + y + 0.5)) / 512.0; 122 | 123 | if (MIXBOX_LUT(float2(0.5, 0.5) / 512.0).b > 0.1) 124 | { 125 | uv0.y = 1.0 - uv0.y; 126 | uv1.y = 1.0 - uv1.y; 127 | } 128 | 129 | float3 c = lerp(MIXBOX_LUT(uv0).rgb, MIXBOX_LUT(uv1).rgb, z - iz); 130 | 131 | return MixboxLatent(c, rgb - MixboxEvalPolynomial(c), 0.0, 0.0, 0.0); 132 | } 133 | 134 | float3 MixboxLatentToRGB(MixboxLatent latent) 135 | { 136 | float3 rgb = saturate(MixboxEvalPolynomial(latent[0]) + latent[1]); 137 | 138 | #ifdef MIXBOX_COLORSPACE_LINEAR 139 | return MixboxSRGBToLinear(rgb); 140 | #else 141 | return rgb; 142 | #endif 143 | } 144 | 145 | float3 MixboxLerp(float3 color1, float3 color2, float t) 146 | { 147 | return MixboxLatentToRGB((1.0-t)*MixboxRGBToLatent(color1) + t*MixboxRGBToLatent(color2)); 148 | } 149 | 150 | float4 MixboxLerp(float4 color1, float4 color2, float t) 151 | { 152 | return float4(MixboxLerp(color1.rgb, color2.rgb, t), lerp(color1.a, color2.a, t)); 153 | } 154 | 155 | #endif 156 | -------------------------------------------------------------------------------- /unity/ShaderLibrary/Mixbox.hlsl: -------------------------------------------------------------------------------- 1 | // ========================================================== 2 | // MIXBOX 2.0 (c) 2022 Secret Weapons. All rights reserved. 3 | // License: Creative Commons Attribution-NonCommercial 4.0 4 | // Authors: Sarka Sochorova and Ondrej Jamriska 5 | // ========================================================== 6 | // 7 | // BASIC USAGE 8 | // 9 | // float3 rgb = MixboxLerp(rgb1, rgb2, t); 10 | // 11 | // MULTI-COLOR MIXING 12 | // 13 | // MixboxLatent z1 = MixboxRGBToLatent(rgb1); 14 | // MixboxLatent z2 = MixboxRGBToLatent(rgb2); 15 | // MixboxLatent z3 = MixboxRGBToLatent(rgb3); 16 | // 17 | // // mix 30% of rgb1, 60% of rgb2, and 10% of rgb3 18 | // MixboxLatent z_mix = 0.3*z1 + 0.6*z2 + 0.1*z3; 19 | // 20 | // float3 rgb_mix = MixboxLatentToRGB(z_mix); 21 | // 22 | // PIGMENT COLORS 23 | // 24 | // Cadmium Yellow 0.996, 0.925, 0.000 25 | // Hansa Yellow 0.988, 0.827, 0.000 26 | // Cadmium Orange 1.000, 0.412, 0.000 27 | // Cadmium Red 1.000, 0.153, 0.008 28 | // Quinacridone Magenta 0.502, 0.008, 0.180 29 | // Cobalt Violet 0.306, 0.000, 0.259 30 | // Ultramarine Blue 0.098, 0.000, 0.349 31 | // Cobalt Blue 0.000, 0.129, 0.522 32 | // Phthalo Blue 0.051, 0.106, 0.267 33 | // Phthalo Green 0.000, 0.235, 0.196 34 | // Permanent Green 0.027, 0.427, 0.086 35 | // Sap Green 0.420, 0.580, 0.016 36 | // Burnt Sienna 0.482, 0.282, 0.000 37 | // 38 | // LICENSING 39 | // 40 | // If you want to obtain commercial license, please 41 | // contact us at: mixbox@scrtwpns.com 42 | // 43 | 44 | #ifndef MIXBOX_INCLUDED 45 | #define MIXBOX_INCLUDED 46 | 47 | #ifndef UNITY_COLORSPACE_GAMMA 48 | #define MIXBOX_COLORSPACE_LINEAR 49 | #endif 50 | 51 | #ifndef MIXBOX_LUT 52 | #ifdef SAMPLE_TEXTURE2D_LOD 53 | #define MIXBOX_LUT(UV) SAMPLE_TEXTURE2D_LOD(_MixboxLUT, sampler_MixboxLUT, UV, 0) 54 | #else 55 | #define MIXBOX_LUT(UV) tex2D(_MixboxLUT, UV) 56 | #endif 57 | #endif 58 | 59 | typedef float3x3 MixboxLatent; 60 | 61 | float3 MixboxEvalPolynomial(float3 c) 62 | { 63 | float c0 = c[0]; 64 | float c1 = c[1]; 65 | float c2 = c[2]; 66 | float c3 = 1.0 - (c0 + c1 + c2); 67 | 68 | float c00 = c0 * c0; 69 | float c11 = c1 * c1; 70 | float c22 = c2 * c2; 71 | float c01 = c0 * c1; 72 | float c02 = c0 * c2; 73 | float c12 = c1 * c2; 74 | float c33 = c3 * c3; 75 | 76 | return (c0*c00) * float3(+0.07717053, +0.02826978, +0.24832992) + 77 | (c1*c11) * float3(+0.95912302, +0.80256528, +0.03561839) + 78 | (c2*c22) * float3(+0.74683774, +0.04868586, +0.00000000) + 79 | (c3*c33) * float3(+0.99518138, +0.99978149, +0.99704802) + 80 | (c00*c1) * float3(+0.04819146, +0.83363781, +0.32515377) + 81 | (c01*c1) * float3(-0.68146950, +1.46107803, +1.06980936) + 82 | (c00*c2) * float3(+0.27058419, -0.15324870, +1.98735057) + 83 | (c02*c2) * float3(+0.80478189, +0.67093710, +0.18424500) + 84 | (c00*c3) * float3(-0.35031003, +1.37855826, +3.68865000) + 85 | (c0*c33) * float3(+1.05128046, +1.97815239, +2.82989073) + 86 | (c11*c2) * float3(+3.21607125, +0.81270228, +1.03384539) + 87 | (c1*c22) * float3(+2.78893374, +0.41565549, -0.04487295) + 88 | (c11*c3) * float3(+3.02162577, +2.55374103, +0.32766114) + 89 | (c1*c33) * float3(+2.95124691, +2.81201112, +1.17578442) + 90 | (c22*c3) * float3(+2.82677043, +0.79933038, +1.81715262) + 91 | (c2*c33) * float3(+2.99691099, +1.22593053, +1.80653661) + 92 | (c01*c2) * float3(+1.87394106, +2.05027182, -0.29835996) + 93 | (c01*c3) * float3(+2.56609566, +7.03428198, +0.62575374) + 94 | (c02*c3) * float3(+4.08329484, -1.40408358, +2.14995522) + 95 | (c12*c3) * float3(+6.00078678, +2.55552042, +1.90739502); 96 | } 97 | 98 | float3 MixboxSRGBToLinear(float3 rgb) 99 | { 100 | return (rgb >= 0.04045) ? pow((abs(rgb) + 0.055) / 1.055, 2.4) : rgb/12.92; 101 | } 102 | 103 | float3 MixboxLinearToSRGB(float3 rgb) 104 | { 105 | return (rgb >= 0.0031308) ? 1.055*pow(abs(rgb), 1.0/2.4) - 0.055 : 12.92*rgb; 106 | } 107 | 108 | MixboxLatent MixboxRGBToLatent(float3 rgb) 109 | { 110 | #ifdef MIXBOX_COLORSPACE_LINEAR 111 | rgb = MixboxLinearToSRGB(saturate(rgb)); 112 | #else 113 | rgb = saturate(rgb); 114 | #endif 115 | 116 | float x = rgb.r * 63.0; 117 | float y = rgb.g * 63.0; 118 | float z = rgb.b * 63.0; 119 | 120 | float iz = floor(z); 121 | 122 | float x0 = fmod(iz, 8.0) * 64.0; 123 | float y0 = floor(iz / 8.0) * 64.0; 124 | 125 | float x1 = fmod(iz + 1.0, 8.0) * 64.0; 126 | float y1 = floor((iz + 1.0) / 8.0) * 64.0; 127 | 128 | float2 uv0 = float2(x0 + x + 0.5, 512.0 - (y0 + y + 0.5)) / 512.0; 129 | float2 uv1 = float2(x1 + x + 0.5, 512.0 - (y1 + y + 0.5)) / 512.0; 130 | 131 | float3 c = lerp(MIXBOX_LUT(uv0).rgb, MIXBOX_LUT(uv1).rgb, z - iz); 132 | 133 | return MixboxLatent(c, rgb - MixboxEvalPolynomial(c), 0.0, 0.0, 0.0); 134 | } 135 | 136 | float3 MixboxLatentToRGB(MixboxLatent latent) 137 | { 138 | float3 rgb = saturate(MixboxEvalPolynomial(latent[0]) + latent[1]); 139 | 140 | #ifdef MIXBOX_COLORSPACE_LINEAR 141 | return MixboxSRGBToLinear(rgb); 142 | #else 143 | return rgb; 144 | #endif 145 | } 146 | 147 | float3 MixboxLerp(float3 color1, float3 color2, float t) 148 | { 149 | return MixboxLatentToRGB((1.0-t)*MixboxRGBToLatent(color1) + t*MixboxRGBToLatent(color2)); 150 | } 151 | 152 | float4 MixboxLerp(float4 color1, float4 color2, float t) 153 | { 154 | return float4(MixboxLerp(color1.rgb, color2.rgb, t), lerp(color1.a, color2.a, t)); 155 | } 156 | 157 | #endif 158 | -------------------------------------------------------------------------------- /shaders/mixbox.glsl: -------------------------------------------------------------------------------- 1 | // ========================================================== 2 | // MIXBOX 2.0 (c) 2022 Secret Weapons. All rights reserved. 3 | // License: Creative Commons Attribution-NonCommercial 4.0 4 | // Authors: Sarka Sochorova and Ondrej Jamriska 5 | // ========================================================== 6 | // 7 | // BASIC USAGE 8 | // 9 | // vec3 rgb = mixbox_lerp(rgb1, rgb2, t); 10 | // 11 | // MULTI-COLOR MIXING 12 | // 13 | // mixbox_latent z1 = mixbox_rgb_to_latent(rgb1); 14 | // mixbox_latent z2 = mixbox_rgb_to_latent(rgb2); 15 | // mixbox_latent z3 = mixbox_rgb_to_latent(rgb3); 16 | // 17 | // // mix 30% of rgb1, 60% of rgb2, and 10% of rgb3 18 | // mixbox_latent z_mix = 0.3*z1 + 0.6*z2 + 0.1*z3; 19 | // 20 | // vec3 rgb_mix = mixbox_latent_to_rgb(z_mix); 21 | // 22 | // PIGMENT COLORS 23 | // 24 | // Cadmium Yellow 0.996, 0.925, 0.000 25 | // Hansa Yellow 0.988, 0.827, 0.000 26 | // Cadmium Orange 1.000, 0.412, 0.000 27 | // Cadmium Red 1.000, 0.153, 0.008 28 | // Quinacridone Magenta 0.502, 0.008, 0.180 29 | // Cobalt Violet 0.306, 0.000, 0.259 30 | // Ultramarine Blue 0.098, 0.000, 0.349 31 | // Cobalt Blue 0.000, 0.129, 0.522 32 | // Phthalo Blue 0.051, 0.106, 0.267 33 | // Phthalo Green 0.000, 0.235, 0.196 34 | // Permanent Green 0.027, 0.427, 0.086 35 | // Sap Green 0.420, 0.580, 0.016 36 | // Burnt Sienna 0.482, 0.282, 0.000 37 | // 38 | // LICENSING 39 | // 40 | // If you want to obtain commercial license, please 41 | // contact us at: mixbox@scrtwpns.com 42 | // 43 | 44 | #ifndef MIXBOX_INCLUDED 45 | #define MIXBOX_INCLUDED 46 | 47 | #ifndef MIXBOX_LUT 48 | #if __VERSION__ <= 120 49 | #define MIXBOX_LUT(UV) texture2D(mixbox_lut, UV) 50 | #else 51 | #define MIXBOX_LUT(UV) textureLod(mixbox_lut, UV, 0.0) 52 | #endif 53 | #endif 54 | 55 | #define mixbox_latent mat3 56 | 57 | vec3 mixbox_eval_polynomial(vec3 c) 58 | { 59 | float c0 = c[0]; 60 | float c1 = c[1]; 61 | float c2 = c[2]; 62 | float c3 = 1.0 - (c0 + c1 + c2); 63 | 64 | float c00 = c0 * c0; 65 | float c11 = c1 * c1; 66 | float c22 = c2 * c2; 67 | float c01 = c0 * c1; 68 | float c02 = c0 * c2; 69 | float c12 = c1 * c2; 70 | float c33 = c3 * c3; 71 | 72 | return (c0*c00) * vec3(+0.07717053, +0.02826978, +0.24832992) + 73 | (c1*c11) * vec3(+0.95912302, +0.80256528, +0.03561839) + 74 | (c2*c22) * vec3(+0.74683774, +0.04868586, +0.00000000) + 75 | (c3*c33) * vec3(+0.99518138, +0.99978149, +0.99704802) + 76 | (c00*c1) * vec3(+0.04819146, +0.83363781, +0.32515377) + 77 | (c01*c1) * vec3(-0.68146950, +1.46107803, +1.06980936) + 78 | (c00*c2) * vec3(+0.27058419, -0.15324870, +1.98735057) + 79 | (c02*c2) * vec3(+0.80478189, +0.67093710, +0.18424500) + 80 | (c00*c3) * vec3(-0.35031003, +1.37855826, +3.68865000) + 81 | (c0*c33) * vec3(+1.05128046, +1.97815239, +2.82989073) + 82 | (c11*c2) * vec3(+3.21607125, +0.81270228, +1.03384539) + 83 | (c1*c22) * vec3(+2.78893374, +0.41565549, -0.04487295) + 84 | (c11*c3) * vec3(+3.02162577, +2.55374103, +0.32766114) + 85 | (c1*c33) * vec3(+2.95124691, +2.81201112, +1.17578442) + 86 | (c22*c3) * vec3(+2.82677043, +0.79933038, +1.81715262) + 87 | (c2*c33) * vec3(+2.99691099, +1.22593053, +1.80653661) + 88 | (c01*c2) * vec3(+1.87394106, +2.05027182, -0.29835996) + 89 | (c01*c3) * vec3(+2.56609566, +7.03428198, +0.62575374) + 90 | (c02*c3) * vec3(+4.08329484, -1.40408358, +2.14995522) + 91 | (c12*c3) * vec3(+6.00078678, +2.55552042, +1.90739502); 92 | } 93 | 94 | float mixbox_srgb_to_linear(float x) 95 | { 96 | return (x >= 0.04045) ? pow((x + 0.055) / 1.055, 2.4) : x/12.92; 97 | } 98 | 99 | float mixbox_linear_to_srgb(float x) 100 | { 101 | return (x >= 0.0031308) ? 1.055*pow(x, 1.0/2.4) - 0.055 : 12.92*x; 102 | } 103 | 104 | vec3 mixbox_srgb_to_linear(vec3 rgb) 105 | { 106 | return vec3(mixbox_srgb_to_linear(rgb.r), 107 | mixbox_srgb_to_linear(rgb.g), 108 | mixbox_srgb_to_linear(rgb.b)); 109 | } 110 | 111 | vec3 mixbox_linear_to_srgb(vec3 rgb) 112 | { 113 | return vec3(mixbox_linear_to_srgb(rgb.r), 114 | mixbox_linear_to_srgb(rgb.g), 115 | mixbox_linear_to_srgb(rgb.b)); 116 | } 117 | 118 | mixbox_latent mixbox_rgb_to_latent(vec3 rgb) 119 | { 120 | #ifdef MIXBOX_COLORSPACE_LINEAR 121 | rgb = mixbox_linear_to_srgb(clamp(rgb, 0.0, 1.0)); 122 | #else 123 | rgb = clamp(rgb, 0.0, 1.0); 124 | #endif 125 | 126 | float x = rgb.r * 63.0; 127 | float y = rgb.g * 63.0; 128 | float z = rgb.b * 63.0; 129 | 130 | float iz = floor(z); 131 | 132 | float x0 = mod(iz, 8.0) * 64.0; 133 | float y0 = floor(iz / 8.0) * 64.0; 134 | 135 | float x1 = mod(iz + 1.0, 8.0) * 64.0; 136 | float y1 = floor((iz + 1.0) / 8.0) * 64.0; 137 | 138 | vec2 uv0 = vec2(x0 + x + 0.5, y0 + y + 0.5) / 512.0; 139 | vec2 uv1 = vec2(x1 + x + 0.5, y1 + y + 0.5) / 512.0; 140 | 141 | if (MIXBOX_LUT(vec2(0.5, 0.5) / 512.0).b < 0.1) 142 | { 143 | uv0.y = 1.0 - uv0.y; 144 | uv1.y = 1.0 - uv1.y; 145 | } 146 | 147 | vec3 c = mix(MIXBOX_LUT(uv0).rgb, MIXBOX_LUT(uv1).rgb, z - iz); 148 | 149 | return mixbox_latent(c, rgb - mixbox_eval_polynomial(c), vec3(0.0)); 150 | } 151 | 152 | vec3 mixbox_latent_to_rgb(mixbox_latent latent) 153 | { 154 | vec3 rgb = clamp(mixbox_eval_polynomial(latent[0]) + latent[1], 0.0, 1.0); 155 | 156 | #ifdef MIXBOX_COLORSPACE_LINEAR 157 | return mixbox_srgb_to_linear(rgb); 158 | #else 159 | return rgb; 160 | #endif 161 | } 162 | 163 | vec3 mixbox_lerp(vec3 color1, vec3 color2, float t) 164 | { 165 | return mixbox_latent_to_rgb((1.0-t)*mixbox_rgb_to_latent(color1) + t*mixbox_rgb_to_latent(color2)); 166 | } 167 | 168 | vec4 mixbox_lerp(vec4 color1, vec4 color2, float t) 169 | { 170 | return vec4(mixbox_lerp(color1.rgb, color2.rgb, t), mix(color1.a, color2.a, t)); 171 | } 172 | 173 | #endif 174 | -------------------------------------------------------------------------------- /shaders/mixbox.metal: -------------------------------------------------------------------------------- 1 | // ========================================================== 2 | // MIXBOX 2.0 (c) 2022 Secret Weapons. All rights reserved. 3 | // License: Creative Commons Attribution-NonCommercial 4.0 4 | // Authors: Sarka Sochorova and Ondrej Jamriska 5 | // ========================================================== 6 | // 7 | // BASIC USAGE 8 | // 9 | // float3 rgb = mixbox_lerp(lut, rgb1, rgb2, t); 10 | // 11 | // MULTI-COLOR MIXING 12 | // 13 | // mixbox_latent z1 = mixbox_rgb_to_latent(lut, rgb1); 14 | // mixbox_latent z2 = mixbox_rgb_to_latent(lut, rgb2); 15 | // mixbox_latent z3 = mixbox_rgb_to_latent(lut, rgb3); 16 | // 17 | // // mix 30% of rgb1, 60% of rgb2, and 10% of rgb3 18 | // mixbox_latent z_mix = 0.3*z1 + 0.6*z2 + 0.1*z3; 19 | // 20 | // float3 rgb_mix = mixbox_latent_to_rgb(z_mix); 21 | // 22 | // PIGMENT COLORS 23 | // 24 | // Cadmium Yellow 0.996, 0.925, 0.000 25 | // Hansa Yellow 0.988, 0.827, 0.000 26 | // Cadmium Orange 1.000, 0.412, 0.000 27 | // Cadmium Red 1.000, 0.153, 0.008 28 | // Quinacridone Magenta 0.502, 0.008, 0.180 29 | // Cobalt Violet 0.306, 0.000, 0.259 30 | // Ultramarine Blue 0.098, 0.000, 0.349 31 | // Cobalt Blue 0.000, 0.129, 0.522 32 | // Phthalo Blue 0.051, 0.106, 0.267 33 | // Phthalo Green 0.000, 0.235, 0.196 34 | // Permanent Green 0.027, 0.427, 0.086 35 | // Sap Green 0.420, 0.580, 0.016 36 | // Burnt Sienna 0.482, 0.282, 0.000 37 | // 38 | // LICENSING 39 | // 40 | // If you want to obtain commercial license, please 41 | // contact us at: mixbox@scrtwpns.com 42 | // 43 | 44 | #ifndef MIXBOX_INCLUDED 45 | #define MIXBOX_INCLUDED 46 | 47 | #include 48 | 49 | typedef metal::float3x3 mixbox_latent; 50 | 51 | inline float3 mixbox_eval_polynomial(float3 c) 52 | { 53 | float c0 = c[0]; 54 | float c1 = c[1]; 55 | float c2 = c[2]; 56 | float c3 = 1.0 - (c0 + c1 + c2); 57 | 58 | float c00 = c0 * c0; 59 | float c11 = c1 * c1; 60 | float c22 = c2 * c2; 61 | float c01 = c0 * c1; 62 | float c02 = c0 * c2; 63 | float c12 = c1 * c2; 64 | float c33 = c3 * c3; 65 | 66 | return (c0*c00) * float3(+0.07717053, +0.02826978, +0.24832992) + 67 | (c1*c11) * float3(+0.95912302, +0.80256528, +0.03561839) + 68 | (c2*c22) * float3(+0.74683774, +0.04868586, +0.00000000) + 69 | (c3*c33) * float3(+0.99518138, +0.99978149, +0.99704802) + 70 | (c00*c1) * float3(+0.04819146, +0.83363781, +0.32515377) + 71 | (c01*c1) * float3(-0.68146950, +1.46107803, +1.06980936) + 72 | (c00*c2) * float3(+0.27058419, -0.15324870, +1.98735057) + 73 | (c02*c2) * float3(+0.80478189, +0.67093710, +0.18424500) + 74 | (c00*c3) * float3(-0.35031003, +1.37855826, +3.68865000) + 75 | (c0*c33) * float3(+1.05128046, +1.97815239, +2.82989073) + 76 | (c11*c2) * float3(+3.21607125, +0.81270228, +1.03384539) + 77 | (c1*c22) * float3(+2.78893374, +0.41565549, -0.04487295) + 78 | (c11*c3) * float3(+3.02162577, +2.55374103, +0.32766114) + 79 | (c1*c33) * float3(+2.95124691, +2.81201112, +1.17578442) + 80 | (c22*c3) * float3(+2.82677043, +0.79933038, +1.81715262) + 81 | (c2*c33) * float3(+2.99691099, +1.22593053, +1.80653661) + 82 | (c01*c2) * float3(+1.87394106, +2.05027182, -0.29835996) + 83 | (c01*c3) * float3(+2.56609566, +7.03428198, +0.62575374) + 84 | (c02*c3) * float3(+4.08329484, -1.40408358, +2.14995522) + 85 | (c12*c3) * float3(+6.00078678, +2.55552042, +1.90739502); 86 | } 87 | 88 | inline float mixbox_srgb_to_linear(float x) 89 | { 90 | return (x >= 0.04045) ? metal::pow((x + 0.055) / 1.055, 2.4) : x/12.92; 91 | } 92 | 93 | inline float mixbox_linear_to_srgb(float x) 94 | { 95 | return (x >= 0.0031308) ? 1.055*metal::pow(x, 1.0/2.4) - 0.055 : 12.92*x; 96 | } 97 | 98 | inline float3 mixbox_srgb_to_linear(float3 rgb) 99 | { 100 | return float3(mixbox_srgb_to_linear(rgb.r), 101 | mixbox_srgb_to_linear(rgb.g), 102 | mixbox_srgb_to_linear(rgb.b)); 103 | } 104 | 105 | inline float3 mixbox_linear_to_srgb(float3 rgb) 106 | { 107 | return float3(mixbox_linear_to_srgb(rgb.r), 108 | mixbox_linear_to_srgb(rgb.g), 109 | mixbox_linear_to_srgb(rgb.b)); 110 | } 111 | 112 | inline mixbox_latent mixbox_rgb_to_latent(metal::texture2d mixbox_lut, float3 rgb) 113 | { 114 | #ifdef MIXBOX_COLORSPACE_LINEAR 115 | rgb = mixbox_linear_to_srgb(metal::saturate(rgb)); 116 | #else 117 | rgb = metal::saturate(rgb); 118 | #endif 119 | 120 | float x = rgb.r * 63.0; 121 | float y = rgb.g * 63.0; 122 | float z = rgb.b * 63.0; 123 | 124 | float iz = metal::floor(z); 125 | 126 | float x0 = metal::fmod(iz, 8.0) * 64.0; 127 | float y0 = metal::floor(iz / 8.0) * 64.0; 128 | 129 | float x1 = metal::fmod(iz + 1.0, 8.0) * 64.0; 130 | float y1 = metal::floor((iz + 1.0) / 8.0) * 64.0; 131 | 132 | float2 uv0 = float2(x0 + x + 0.5, y0 + y + 0.5) / 512.0; 133 | float2 uv1 = float2(x1 + x + 0.5, y1 + y + 0.5) / 512.0; 134 | 135 | constexpr metal::sampler lut_sampler(metal::mag_filter::linear, metal::min_filter::linear, metal::mip_filter::none); 136 | 137 | if (mixbox_lut.sample(lut_sampler, float2(0.5, 0.5) / 512.0).b < 0.1) 138 | { 139 | uv0.y = 1.0 - uv0.y; 140 | uv1.y = 1.0 - uv1.y; 141 | } 142 | 143 | float3 c = metal::mix(mixbox_lut.sample(lut_sampler, uv0).rgb, mixbox_lut.sample(lut_sampler, uv1).rgb, z - iz); 144 | 145 | return mixbox_latent(c, rgb - mixbox_eval_polynomial(c), float3(0.0, 0.0, 0.0)); 146 | } 147 | 148 | inline float3 mixbox_latent_to_rgb(mixbox_latent latent) 149 | { 150 | float3 rgb = metal::saturate(mixbox_eval_polynomial(latent[0]) + latent[1]); 151 | 152 | #ifdef MIXBOX_COLORSPACE_LINEAR 153 | return mixbox_srgb_to_linear(rgb); 154 | #else 155 | return rgb; 156 | #endif 157 | } 158 | 159 | inline float3 mixbox_lerp(metal::texture2d mixbox_lut, float3 color1, float3 color2, float t) 160 | { 161 | return mixbox_latent_to_rgb((1.0-t)*mixbox_rgb_to_latent(mixbox_lut, color1) + t*mixbox_rgb_to_latent(mixbox_lut, color2)); 162 | } 163 | 164 | inline float4 mixbox_lerp(metal::texture2d mixbox_lut, float4 color1, float4 color2, float t) 165 | { 166 | return float4(mixbox_lerp(mixbox_lut, color1.rgb, color2.rgb, t), metal::mix(color1.a, color2.a, t)); 167 | } 168 | 169 | #endif 170 | -------------------------------------------------------------------------------- /godot/addons/mixbox/mixbox_lerp_node.gd: -------------------------------------------------------------------------------- 1 | # ========================================================== 2 | # MIXBOX 2.0 (c) 2022 Secret Weapons. All rights reserved. 3 | # License: Creative Commons Attribution-NonCommercial 4.0 4 | # Authors: Sarka Sochorova and Ondrej Jamriska 5 | # ========================================================== 6 | # 7 | # USAGE 8 | # 9 | # VisualShader: Add Node... > Mixbox > MixboxLerp 10 | # 11 | # Inspector: 12 | # Drag file "res://addons/mixbox/mixbox_lut.png" 13 | # to "Material > Shader Param > Mixbox Lut" slot. 14 | # 15 | # PIGMENT COLORS 16 | # 17 | # Cadmium Yellow 0.996, 0.925, 0.000 18 | # Hansa Yellow 0.988, 0.827, 0.000 19 | # Cadmium Orange 1.000, 0.412, 0.000 20 | # Cadmium Red 1.000, 0.153, 0.008 21 | # Quinacridone Magenta 0.502, 0.008, 0.180 22 | # Cobalt Violet 0.306, 0.000, 0.259 23 | # Ultramarine Blue 0.098, 0.000, 0.349 24 | # Cobalt Blue 0.000, 0.129, 0.522 25 | # Phthalo Blue 0.051, 0.106, 0.267 26 | # Phthalo Green 0.000, 0.235, 0.196 27 | # Permanent Green 0.027, 0.427, 0.086 28 | # Sap Green 0.420, 0.580, 0.016 29 | # Burnt Sienna 0.482, 0.282, 0.000 30 | # 31 | # LICENSING 32 | # 33 | # If you want to obtain commercial license, please 34 | # contact us at: mixbox@scrtwpns.com 35 | # 36 | 37 | tool 38 | extends VisualShaderNodeCustom 39 | class_name VisualShaderNodeMixboxLerp 40 | 41 | func _init(): 42 | set_input_port_default_value(0, Vector3(0.0, 0.129, 0.522)) 43 | set_input_port_default_value(1, Vector3(0.988, 0.827, 0.0)) 44 | set_input_port_default_value(2, 0.5) 45 | 46 | func _get_name(): 47 | return "MixboxLerp" 48 | 49 | func _get_category(): 50 | return "Mixbox" 51 | 52 | func _get_description(): 53 | return "Mixbox" 54 | 55 | func _get_return_icon_type(): 56 | return VisualShaderNode.PORT_TYPE_VECTOR 57 | 58 | func _get_input_port_count(): 59 | return 3 60 | 61 | func _get_input_port_name(port): 62 | match port: 63 | 0: 64 | return "a" 65 | 1: 66 | return "b" 67 | 2: 68 | return "t" 69 | 70 | func _get_input_port_type(port): 71 | match port: 72 | 0: 73 | return VisualShaderNode.PORT_TYPE_VECTOR 74 | 1: 75 | return VisualShaderNode.PORT_TYPE_VECTOR 76 | 2: 77 | return VisualShaderNode.PORT_TYPE_SCALAR 78 | 79 | func _get_output_port_count(): 80 | return 1 81 | 82 | 83 | func _get_output_port_name(port): 84 | return "result" 85 | 86 | func _get_output_port_type(port): 87 | return VisualShaderNode.PORT_TYPE_VECTOR 88 | 89 | func _get_global_code(mode): 90 | return """ 91 | uniform sampler2D mixbox_lut; 92 | 93 | vec3 _mixbox_eval_polynomial(vec3 _mixbox_c) { 94 | float _mixbox_c0 = _mixbox_c[0]; 95 | float _mixbox_c1 = _mixbox_c[1]; 96 | float _mixbox_c2 = _mixbox_c[2]; 97 | float _mixbox_c3 = 1.0 - (_mixbox_c0 + _mixbox_c1 + _mixbox_c2); 98 | 99 | float _mixbox_c00 = _mixbox_c0 * _mixbox_c0; 100 | float _mixbox_c11 = _mixbox_c1 * _mixbox_c1; 101 | float _mixbox_c22 = _mixbox_c2 * _mixbox_c2; 102 | float _mixbox_c01 = _mixbox_c0 * _mixbox_c1; 103 | float _mixbox_c02 = _mixbox_c0 * _mixbox_c2; 104 | float _mixbox_c12 = _mixbox_c1 * _mixbox_c2; 105 | float _mixbox_c33 = _mixbox_c3 * _mixbox_c3; 106 | 107 | return ( 108 | (_mixbox_c0 * _mixbox_c00) * vec3(+0.07717053, +0.02826978, +0.24832992) + 109 | (_mixbox_c1 * _mixbox_c11) * vec3(+0.95912302, +0.80256528, +0.03561839) + 110 | (_mixbox_c2 * _mixbox_c22) * vec3(+0.74683774, +0.04868586, +0.00000000) + 111 | (_mixbox_c3 * _mixbox_c33) * vec3(+0.99518138, +0.99978149, +0.99704802) + 112 | (_mixbox_c00 * _mixbox_c1) * vec3(+0.04819146, +0.83363781, +0.32515377) + 113 | (_mixbox_c01 * _mixbox_c1) * vec3(-0.68146950, +1.46107803, +1.06980936) + 114 | (_mixbox_c00 * _mixbox_c2) * vec3(+0.27058419, -0.15324870, +1.98735057) + 115 | (_mixbox_c02 * _mixbox_c2) * vec3(+0.80478189, +0.67093710, +0.18424500) + 116 | (_mixbox_c00 * _mixbox_c3) * vec3(-0.35031003, +1.37855826, +3.68865000) + 117 | (_mixbox_c0 * _mixbox_c33) * vec3(+1.05128046, +1.97815239, +2.82989073) + 118 | (_mixbox_c11 * _mixbox_c2) * vec3(+3.21607125, +0.81270228, +1.03384539) + 119 | (_mixbox_c1 * _mixbox_c22) * vec3(+2.78893374, +0.41565549, -0.04487295) + 120 | (_mixbox_c11 * _mixbox_c3) * vec3(+3.02162577, +2.55374103, +0.32766114) + 121 | (_mixbox_c1 * _mixbox_c33) * vec3(+2.95124691, +2.81201112, +1.17578442) + 122 | (_mixbox_c22 * _mixbox_c3) * vec3(+2.82677043, +0.79933038, +1.81715262) + 123 | (_mixbox_c2 * _mixbox_c33) * vec3(+2.99691099, +1.22593053, +1.80653661) + 124 | (_mixbox_c01 * _mixbox_c2) * vec3(+1.87394106, +2.05027182, -0.29835996) + 125 | (_mixbox_c01 * _mixbox_c3) * vec3(+2.56609566, +7.03428198, +0.62575374) + 126 | (_mixbox_c02 * _mixbox_c3) * vec3(+4.08329484, -1.40408358, +2.14995522) + 127 | (_mixbox_c12 * _mixbox_c3) * vec3(+6.00078678, +2.55552042, +1.90739502)); 128 | } 129 | 130 | mat3 _mixbox_rgb_to_latent(vec3 _mixbox_rgb) { 131 | _mixbox_rgb = clamp(_mixbox_rgb, 0.0, 1.0); 132 | 133 | float _mixbox_x = _mixbox_rgb.r * 63.0; 134 | float _mixbox_y = _mixbox_rgb.g * 63.0; 135 | float _mixbox_z = _mixbox_rgb.b * 63.0; 136 | 137 | float _mixbox_iz = floor(_mixbox_z); 138 | 139 | float _mixbox_x0 = mod(_mixbox_iz, 8.0) * 64.0; 140 | float _mixbox_y0 = floor(_mixbox_iz / 8.0) * 64.0; 141 | 142 | float _mixbox_x1 = mod(_mixbox_iz + 1.0, 8.0) * 64.0; 143 | float _mixbox_y1 = floor((_mixbox_iz + 1.0) / 8.0) * 64.0; 144 | 145 | vec2 _mixbox_uv0 = vec2(_mixbox_x0 + _mixbox_x + 0.5, _mixbox_y0 + _mixbox_y + 0.5) / 512.0; 146 | vec2 _mixbox_uv1 = vec2(_mixbox_x1 + _mixbox_x + 0.5, _mixbox_y1 + _mixbox_y + 0.5) / 512.0; 147 | 148 | vec3 _mixbox_c = mix(textureLod(mixbox_lut, _mixbox_uv0, 0.0).rgb, textureLod(mixbox_lut, _mixbox_uv1, 0.0).rgb, _mixbox_z - _mixbox_iz); 149 | 150 | return mat3(_mixbox_c, _mixbox_rgb - _mixbox_eval_polynomial(_mixbox_c), vec3(0.0)); 151 | } 152 | 153 | vec3 _mixbox_latent_to_rgb(mat3 _mixbox_latent) { 154 | return clamp(_mixbox_eval_polynomial(_mixbox_latent[0]) + _mixbox_latent[1], 0.0, 1.0); 155 | } 156 | 157 | vec3 _mixbox_lerp(vec3 _mixbox_color1, vec3 _mixbox_color2, float _mixbox_t) { 158 | return _mixbox_latent_to_rgb((1.0-_mixbox_t)*_mixbox_rgb_to_latent(_mixbox_color1.rgb) + _mixbox_t*_mixbox_rgb_to_latent(_mixbox_color2.rgb)); 159 | } 160 | """ 161 | 162 | func _get_code(input_vars, output_vars, mode, type): 163 | return output_vars[0] + " = _mixbox_lerp(%s, %s, %s);" % [input_vars[0], input_vars[1], input_vars[2]] 164 | -------------------------------------------------------------------------------- /javascript/examples/splash.html: -------------------------------------------------------------------------------- 1 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
15 | 16 | 17 | 161 | 162 | 163 | -------------------------------------------------------------------------------- /shaders/README.md: -------------------------------------------------------------------------------- 1 | ## GLSL Shader 2 | ```glsl 3 | #ifdef GL_ES 4 | precision highp float; 5 | #endif 6 | 7 | // uncomment the following line if you work in linear space 8 | // #define MIXBOX_COLORSPACE_LINEAR 9 | 10 | uniform sampler2D mixbox_lut; // bind the "mixbox_lut.png" texture here 11 | 12 | #include "mixbox.glsl" // paste the contents of mixbox.glsl here 13 | 14 | void main(void) 15 | { 16 | vec3 rgb1 = vec3(0, 0.129, 0.522); // blue 17 | vec3 rgb2 = vec3(0.988, 0.827, 0); // yellow 18 | float t = 0.5; // mixing ratio 19 | 20 | vec3 rgb = mixbox_lerp(rgb1, rgb2, t); 21 | 22 | gl_FragColor = vec4(rgb, 1.0); 23 | } 24 | ``` 25 | ```glsl 26 | vec3 mix_three(vec3 rgb1, vec3 rgb2, vec3 rgb3) 27 | { 28 | mixbox_latent z1 = mixbox_rgb_to_latent(rgb1); 29 | mixbox_latent z2 = mixbox_rgb_to_latent(rgb2); 30 | mixbox_latent z3 = mixbox_rgb_to_latent(rgb3); 31 | 32 | // mix together 30% of rgb1, 60% of rgb2, and 10% of rgb3 33 | mixbox_latent z_mix = 0.3*z1 + 0.6*z2 + 0.1*z3; 34 | 35 | vec3 rgb_mix = mixbox_latent_to_rgb(z_mix); 36 | 37 | return rgb_mix; 38 | } 39 | ``` 40 | 41 | ## HLSL Shader 42 | ```hlsl 43 | // uncomment the following line if you work in linear space 44 | // #define MIXBOX_COLORSPACE_LINEAR 45 | 46 | Texture2D MixboxLUT; // bind the "mixbox_lut.png" texture here 47 | SamplerState MixboxSampler; // FILTER_MIN_MAG_LINEAR_MIP_POINT 48 | 49 | #define MIXBOX_LUT(UV) MixboxLUT.SampleLevel(MixboxSampler, UV, 0) 50 | 51 | #include "mixbox.hlsl" 52 | 53 | float4 PSMain() : SV_Target 54 | { 55 | float3 rgb1 = float3(0, 0.129, 0.522); // blue 56 | float3 rgb2 = float3(0.988, 0.827, 0); // yellow 57 | float t = 0.5; // mixing ratio 58 | 59 | float3 rgb_mix = MixboxLerp(rgb1, rgb2, t); 60 | 61 | return float4(rgb_mix, 1.0); 62 | } 63 | ``` 64 | ```hlsl 65 | float3 MixThree(float3 rgb1, float3 rgb2, float3 rgb3) 66 | { 67 | MixboxLatent z1 = MixboxRGBToLatent(rgb1); 68 | MixboxLatent z2 = MixboxRGBToLatent(rgb2); 69 | MixboxLatent z3 = MixboxRGBToLatent(rgb3); 70 | 71 | // mix together 30% of rgb1, 60% of rgb2, and 10% of rgb3 72 | MixboxLatent zMix = 0.3*z1 + 0.6*z2 + 0.1*z3; 73 | 74 | float3 rgbMix = MixboxLatentToRGB(zMix); 75 | 76 | return rgbMix; 77 | } 78 | ``` 79 | 80 | ## Metal Shader 81 | ```metal 82 | #include 83 | using namespace metal; 84 | 85 | // uncomment the following line if you work in linear space 86 | // #define MIXBOX_COLORSPACE_LINEAR 87 | 88 | #include "mixbox.metal" 89 | 90 | fragment float4 // load "mixbox_lut.png" into texture 0 91 | fragment_main(texture2d mixbox_lut [[texture(0)]]) 92 | { 93 | float3 rgb1 = float3(0, 0.129, 0.522); // blue 94 | float3 rgb2 = float3(0.988, 0.827, 0); // yellow 95 | 96 | float t = 0.5; // mixing ratio 97 | 98 | float3 rgb_mix = mixbox_lerp(mixbox_lut, rgb1, rgb2, t); 99 | 100 | return float4(rgb_mix, 1.0); 101 | } 102 | ``` 103 | ```metal 104 | float3 mix_three(texture2d mixbox_lut, 105 | float3 rgb1, float3 rgb2, float3 rgb3) 106 | { 107 | mixbox_latent z1 = mixbox_rgb_to_latent(mixbox_lut, rgb1); 108 | mixbox_latent z2 = mixbox_rgb_to_latent(mixbox_lut, rgb2); 109 | mixbox_latent z3 = mixbox_rgb_to_latent(mixbox_lut, rgb3); 110 | 111 | // mix together 30% of rgb1, 60% of rgb2, and 10% of rgb3 112 | mixbox_latent z_mix = 0.3*z1 + 0.6*z2 + 0.1*z3; 113 | 114 | float3 rgb_mix = mixbox_latent_to_rgb(z_mix); 115 | 116 | return rgb_mix; 117 | } 118 | ``` 119 | 120 | ## OSL Shader 121 | ```c 122 | #include "mixbox.osl" 123 | 124 | shader mix( 125 | color rgb1 = color(0.0, 0.015, 0.235), // blue 126 | color rgb2 = color(0.973, 0.651, 0.0), // yellow 127 | float t = 0.5, // mixing ratio 128 | output color rgb_mix = 0 129 | ) 130 | { 131 | rgb_mix = mixbox_lerp(rgb1, rgb2, t); 132 | } 133 | ``` 134 | ```c 135 | color mix_three(color rgb1, color rgb2, color rgb3) 136 | { 137 | mixbox_latent z1 = mixbox_rgb_to_latent(rgb1); 138 | mixbox_latent z2 = mixbox_rgb_to_latent(rgb2); 139 | mixbox_latent z3 = mixbox_rgb_to_latent(rgb3); 140 | 141 | // mix together 30% of rgb1, 60% of rgb2, and 10% of rgb3 142 | mixbox_latent z_mix = 0.3*z1 + 0.6*z2 + 0.1*z3; 143 | 144 | color rgb_mix = mixbox_latent_to_rgb(z_mix); 145 | 146 | return rgb_mix; 147 | } 148 | ``` 149 | 150 | ## Pigment Colors 151 | | Pigment | | RGB | Float RGB | Linear RGB | 152 | | --- | --- |:----:|:----:|:----:| 153 | | Cadmium Yellow | | 254, 236, 0 | 0.996, 0.925, 0.0 | 0.991, 0.839, 0.0 | 154 | | Hansa Yellow | | 252, 211, 0 | 0.988, 0.827, 0.0 | 0.973, 0.651, 0.0 | 155 | | Cadmium Orange | | 255, 105, 0 | 1.0, 0.412, 0.0 | 1.0, 0.141, 0.0 | 156 | | Cadmium Red | | 255, 39, 2 | 1.0, 0.153, 0.008 | 1.0, 0.02, 0.001 | 157 | | Quinacridone Magenta | | 128, 2, 46 | 0.502, 0.008, 0.18 | 0.216, 0.001, 0.027 | 158 | | Cobalt Violet | | 78, 0, 66 | 0.306, 0.0, 0.259 | 0.076, 0.0, 0.054 | 159 | | Ultramarine Blue | | 25, 0, 89 | 0.098, 0.0, 0.349 | 0.01, 0.0, 0.1 | 160 | | Cobalt Blue | | 0, 33, 133 | 0.0, 0.129, 0.522 | 0.0, 0.015, 0.235 | 161 | | Phthalo Blue | | 13, 27, 68 | 0.051, 0.106, 0.267 | 0.004, 0.011, 0.058 | 162 | | Phthalo Green | | 0, 60, 50 | 0.0, 0.235, 0.196 | 0.0, 0.045, 0.032 | 163 | | Permanent Green | | 7, 109, 22 | 0.027, 0.427, 0.086 | 0.002, 0.153, 0.008 | 164 | | Sap Green | | 107, 148, 4 | 0.42, 0.58, 0.016 | 0.147, 0.296, 0.001 | 165 | | Burnt Sienna | | 123, 72, 0 | 0.482, 0.282, 0.0 | 0.198, 0.065, 0.0 | 166 | 167 | ## License 168 | Copyright (c) 2022, Secret Weapons. All rights reserved.
169 | Mixbox is provided under the CC BY-NC 4.0 license for non-commercial use only.
170 | If you want to obtain commercial license, please contact: mixbox@scrtwpns.com 171 | -------------------------------------------------------------------------------- /unity/README.md: -------------------------------------------------------------------------------- 1 | # Mixbox for Unity 2 | 3 | Open `Window` > `Package Manager` and choose ` + ` > `Add packge from git URL...`: 4 | ``` 5 | https://github.com/scrtwpns/mixbox.git#upm 6 | ``` 7 | 8 | ## Script 9 | ```csharp 10 | using UnityEngine; 11 | using Scrtwpns.Mixbox; 12 | 13 | public class NewBehaviourScript : MonoBehaviour 14 | { 15 | void Start() 16 | { 17 | Color color1 = new Color(0.0f, 0.129f, 0.522f); // blue 18 | Color color2 = new Color(0.988f, 0.827f, 0.0f); // yellow 19 | float t = 0.5f; // mixing ratio 20 | 21 | Color colorMix = Mixbox.Lerp(color1, color2, t); 22 | 23 | Debug.Log(colorMix); 24 | } 25 | } 26 | ``` 27 | ```csharp 28 | Color MixThree(Color color1, Color color2, Color color3) 29 | { 30 | MixboxLatent z1 = Mixbox.RGBToLatent(color1); 31 | MixboxLatent z2 = Mixbox.RGBToLatent(color2); 32 | MixboxLatent z3 = Mixbox.RGBToLatent(color3); 33 | 34 | // mix 30% of color1, 60% of color2, and 10% of color3 35 | MixboxLatent zMix = 0.3f*z1 + 0.6f*z2 + 0.1f*z3; 36 | 37 | Color colorMix = Mixbox.LatentToRGB(zMix); 38 | 39 | return colorMix; 40 | } 41 | ``` 42 | 43 | ## Shader 44 | ```ShaderLab 45 | Shader "MixboxHelloShader" 46 | { 47 | Properties 48 | { 49 | [NoScaleOffset] _MixboxLUT ("Mixbox LUT", 2D) = "white" {} // assign "Packages/Mixbox/Textures/MixboxLUT.png" 50 | 51 | _Color1 ("Color 1", Color) = (0, 0.129, 0.522, 1) // blue 52 | _Color2 ("Color 2", Color) = (0.988, 0.827, 0, 1) // yellow 53 | } 54 | SubShader 55 | { 56 | Pass 57 | { 58 | CGPROGRAM 59 | #pragma vertex vert 60 | #pragma fragment frag 61 | 62 | #include "UnityCG.cginc" 63 | 64 | sampler2D _MixboxLUT; 65 | #include "Packages/com.scrtwpns.mixbox/ShaderLibrary/Mixbox.cginc" 66 | 67 | fixed4 _Color1; 68 | fixed4 _Color2; 69 | 70 | struct appdata { float4 vertex : POSITION; float2 uv : TEXCOORD0; }; 71 | struct v2f { float2 uv : TEXCOORD0; float4 vertex : SV_POSITION; }; 72 | 73 | v2f vert (appdata v) 74 | { 75 | v2f o; 76 | o.vertex = UnityObjectToClipPos(v.vertex); 77 | o.uv = v.uv; 78 | return o; 79 | } 80 | 81 | fixed4 frag (v2f i) : SV_Target 82 | { 83 | return MixboxLerp(_Color1, _Color2, i.uv.x); 84 | } 85 | ENDCG 86 | } 87 | } 88 | } 89 | ``` 90 | ```hlsl 91 | float3 MixThree(float3 rgb1, float3 rgb2, float3 rgb3) 92 | { 93 | MixboxLatent z1 = MixboxRGBToLatent(rgb1); 94 | MixboxLatent z2 = MixboxRGBToLatent(rgb2); 95 | MixboxLatent z3 = MixboxRGBToLatent(rgb3); 96 | 97 | // mix together 30% of rgb1, 60% of rgb2, and 10% of rgb3 98 | MixboxLatent zMix = 0.3*z1 + 0.6*z2 + 0.1*z3; 99 | 100 | float3 rgbMix = MixboxLatentToRGB(zMix); 101 | 102 | return rgbMix; 103 | } 104 | ``` 105 |

106 | 107 |

108 | 109 | ## URP Shader 110 | ```ShaderLab 111 | Shader "Mixbox/Mixbox URP Sample Shader" 112 | { 113 | Properties 114 | { 115 | [NoScaleOffset] _MixboxLUT ("Mixbox LUT", 2D) = "white" {} // assign "Packages/Mixbox/Textures/MixboxLUT.png" 116 | 117 | _Color1 ("Color 1", Color) = (0, 0.129, 0.522, 1) // blue 118 | _Color2 ("Color 2", Color) = (0.988, 0.827, 0, 1) // yellow 119 | } 120 | 121 | SubShader 122 | { 123 | Tags { "RenderType" = "Opaque" "RenderPipeline" = "UniversalRenderPipeline" } 124 | 125 | Pass 126 | { 127 | HLSLPROGRAM 128 | #pragma vertex vert 129 | #pragma fragment frag 130 | 131 | #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl" 132 | 133 | TEXTURE2D(_MixboxLUT); 134 | SAMPLER(sampler_MixboxLUT); 135 | 136 | #include "Packages/com.scrtwpns.mixbox/ShaderLibrary/Mixbox.hlsl" 137 | 138 | struct Attributes { float4 positionOS : POSITION; float2 uv : TEXCOORD0; }; 139 | struct Varyings { float4 positionHCS : SV_POSITION; float2 uv : TEXCOORD0; }; 140 | 141 | CBUFFER_START(UnityPerMaterial) 142 | half4 _Color1; 143 | half4 _Color2; 144 | CBUFFER_END 145 | 146 | Varyings vert(Attributes IN) 147 | { 148 | Varyings OUT; 149 | OUT.positionHCS = TransformObjectToHClip(IN.positionOS.xyz); 150 | OUT.uv = IN.uv; 151 | return OUT; 152 | } 153 | 154 | half4 frag(Varyings IN) : SV_Target 155 | { 156 | return MixboxLerp(_Color1, _Color2, IN.uv.x); 157 | } 158 | ENDHLSL 159 | } 160 | } 161 | } 162 | ``` 163 | 164 | ## Shader Graph 165 |

166 | 167 |

168 | 169 | ## Pigment Colors 170 | | Pigment | | RGB | Float RGB | Linear RGB | 171 | | --- | --- |:----:|:----:|:----:| 172 | | Cadmium Yellow | | 254, 236, 0 | 0.996, 0.925, 0.0 | 0.991, 0.839, 0.0 | 173 | | Hansa Yellow | | 252, 211, 0 | 0.988, 0.827, 0.0 | 0.973, 0.651, 0.0 | 174 | | Cadmium Orange | | 255, 105, 0 | 1.0, 0.412, 0.0 | 1.0, 0.141, 0.0 | 175 | | Cadmium Red | | 255, 39, 2 | 1.0, 0.153, 0.008 | 1.0, 0.02, 0.001 | 176 | | Quinacridone Magenta | | 128, 2, 46 | 0.502, 0.008, 0.18 | 0.216, 0.001, 0.027 | 177 | | Cobalt Violet | | 78, 0, 66 | 0.306, 0.0, 0.259 | 0.076, 0.0, 0.054 | 178 | | Ultramarine Blue | | 25, 0, 89 | 0.098, 0.0, 0.349 | 0.01, 0.0, 0.1 | 179 | | Cobalt Blue | | 0, 33, 133 | 0.0, 0.129, 0.522 | 0.0, 0.015, 0.235 | 180 | | Phthalo Blue | | 13, 27, 68 | 0.051, 0.106, 0.267 | 0.004, 0.011, 0.058 | 181 | | Phthalo Green | | 0, 60, 50 | 0.0, 0.235, 0.196 | 0.0, 0.045, 0.032 | 182 | | Permanent Green | | 7, 109, 22 | 0.027, 0.427, 0.086 | 0.002, 0.153, 0.008 | 183 | | Sap Green | | 107, 148, 4 | 0.42, 0.58, 0.016 | 0.147, 0.296, 0.001 | 184 | | Burnt Sienna | | 123, 72, 0 | 0.482, 0.282, 0.0 | 0.198, 0.065, 0.0 | 185 | 186 | ## License 187 | Copyright (c) 2022, Secret Weapons. All rights reserved.
188 | Mixbox is provided under the CC BY-NC 4.0 license for non-commercial use only.
189 | If you want to obtain commercial license, please contact: mixbox@scrtwpns.com 190 | -------------------------------------------------------------------------------- /godot/addons/mixbox/mixbox.gd: -------------------------------------------------------------------------------- 1 | # ========================================================== 2 | # MIXBOX 2.0 (c) 2022 Secret Weapons. All rights reserved. 3 | # License: Creative Commons Attribution-NonCommercial 4.0 4 | # Authors: Sarka Sochorova and Ondrej Jamriska 5 | # ========================================================== 6 | # 7 | # BASIC USAGE 8 | # 9 | # var color_mix = Mixbox.lerp(color1, color2, t) 10 | # 11 | # MULTI-COLOR MIXING 12 | # 13 | # var z1 = Mixbox.rgb_to_latent(color1) 14 | # var z2 = Mixbox.rgb_to_latent(color2) 15 | # var z3 = Mixbox.rgb_to_latent(color3) 16 | # 17 | # var z_mix = [] 18 | # z_mix.resize(Mixbox.LATENT_SIZE) 19 | # 20 | # for i in z_mix.size(): # mix together: 21 | # z_mix[i] = (0.3*z1[i] + # 30% of color1 22 | # 0.6*z2[i] + # 60% of color2 23 | # 0.1*z3[i]) # 10% of color3 24 | # 25 | # var color_mix = Mixbox.latent_to_rgb(z_mix) 26 | # 27 | # PIGMENT COLORS 28 | # 29 | # Cadmium Yellow 0.996, 0.925, 0.000 30 | # Hansa Yellow 0.988, 0.827, 0.000 31 | # Cadmium Orange 1.000, 0.412, 0.000 32 | # Cadmium Red 1.000, 0.153, 0.008 33 | # Quinacridone Magenta 0.502, 0.008, 0.180 34 | # Cobalt Violet 0.306, 0.000, 0.259 35 | # Ultramarine Blue 0.098, 0.000, 0.349 36 | # Cobalt Blue 0.000, 0.129, 0.522 37 | # Phthalo Blue 0.051, 0.106, 0.267 38 | # Phthalo Green 0.000, 0.235, 0.196 39 | # Permanent Green 0.027, 0.427, 0.086 40 | # Sap Green 0.420, 0.580, 0.016 41 | # Burnt Sienna 0.482, 0.282, 0.000 42 | # 43 | # LICENSING 44 | # 45 | # If you want to obtain commercial license, please 46 | # contact us at: mixbox@scrtwpns.com 47 | # 48 | 49 | const lut = preload("mixbox.res").__data__ 50 | 51 | const LATENT_SIZE = 7 52 | 53 | static func clamp01(value : float) -> float: 54 | return clamp(value, 0.0, 1.0) 55 | 56 | static func eval_polynomial(c0 : float, c1 : float, c2 : float, c3 : float) -> Color: 57 | var r = 0.0 58 | var g = 0.0 59 | var b = 0.0 60 | 61 | var c00 = c0 * c0 62 | var c11 = c1 * c1 63 | var c22 = c2 * c2 64 | var c33 = c3 * c3 65 | var c01 = c0 * c1 66 | var c02 = c0 * c2 67 | var c12 = c1 * c2 68 | 69 | var w = 0.0 70 | w = c0*c00; r += +0.07717053*w; g += +0.02826978*w; b += +0.24832992*w; 71 | w = c1*c11; r += +0.95912302*w; g += +0.80256528*w; b += +0.03561839*w; 72 | w = c2*c22; r += +0.74683774*w; g += +0.04868586*w; b += +0.00000000*w; 73 | w = c3*c33; r += +0.99518138*w; g += +0.99978149*w; b += +0.99704802*w; 74 | w = c00*c1; r += +0.04819146*w; g += +0.83363781*w; b += +0.32515377*w; 75 | w = c01*c1; r += -0.68146950*w; g += +1.46107803*w; b += +1.06980936*w; 76 | w = c00*c2; r += +0.27058419*w; g += -0.15324870*w; b += +1.98735057*w; 77 | w = c02*c2; r += +0.80478189*w; g += +0.67093710*w; b += +0.18424500*w; 78 | w = c00*c3; r += -0.35031003*w; g += +1.37855826*w; b += +3.68865000*w; 79 | w = c0*c33; r += +1.05128046*w; g += +1.97815239*w; b += +2.82989073*w; 80 | w = c11*c2; r += +3.21607125*w; g += +0.81270228*w; b += +1.03384539*w; 81 | w = c1*c22; r += +2.78893374*w; g += +0.41565549*w; b += -0.04487295*w; 82 | w = c11*c3; r += +3.02162577*w; g += +2.55374103*w; b += +0.32766114*w; 83 | w = c1*c33; r += +2.95124691*w; g += +2.81201112*w; b += +1.17578442*w; 84 | w = c22*c3; r += +2.82677043*w; g += +0.79933038*w; b += +1.81715262*w; 85 | w = c2*c33; r += +2.99691099*w; g += +1.22593053*w; b += +1.80653661*w; 86 | w = c01*c2; r += +1.87394106*w; g += +2.05027182*w; b += -0.29835996*w; 87 | w = c01*c3; r += +2.56609566*w; g += +7.03428198*w; b += +0.62575374*w; 88 | w = c02*c3; r += +4.08329484*w; g += -1.40408358*w; b += +2.14995522*w; 89 | w = c12*c3; r += +6.00078678*w; g += +2.55552042*w; b += +1.90739502*w; 90 | 91 | return Color(r, g, b) 92 | 93 | static func rgb_to_latent(color : Color) -> Array: 94 | var r = clamp01(color.r) 95 | var g = clamp01(color.g) 96 | var b = clamp01(color.b) 97 | 98 | var x = r * 63.0 99 | var y = g * 63.0 100 | var z = b * 63.0 101 | 102 | var ix = int(x) 103 | var iy = int(y) 104 | var iz = int(z) 105 | 106 | var tx = x - ix 107 | var ty = y - iy 108 | var tz = z - iz 109 | 110 | var xyz = ix + iy*64 + iz*64*64 111 | 112 | var c0 = 0.0 113 | var c1 = 0.0 114 | var c2 = 0.0 115 | 116 | var w = 0.0 117 | w = (1.0-tx)*(1.0-ty)*(1.0-tz); c0 += w*lut[xyz+ 192]; c1 += w*lut[xyz+262336]; c2 += w*lut[xyz+524480]; 118 | w = ( tx)*(1.0-ty)*(1.0-tz); c0 += w*lut[xyz+ 193]; c1 += w*lut[xyz+262337]; c2 += w*lut[xyz+524481]; 119 | w = (1.0-tx)*( ty)*(1.0-tz); c0 += w*lut[xyz+ 256]; c1 += w*lut[xyz+262400]; c2 += w*lut[xyz+524544]; 120 | w = ( tx)*( ty)*(1.0-tz); c0 += w*lut[xyz+ 257]; c1 += w*lut[xyz+262401]; c2 += w*lut[xyz+524545]; 121 | w = (1.0-tx)*(1.0-ty)*( tz); c0 += w*lut[xyz+4288]; c1 += w*lut[xyz+266432]; c2 += w*lut[xyz+528576]; 122 | w = ( tx)*(1.0-ty)*( tz); c0 += w*lut[xyz+4289]; c1 += w*lut[xyz+266433]; c2 += w*lut[xyz+528577]; 123 | w = (1.0-tx)*( ty)*( tz); c0 += w*lut[xyz+4352]; c1 += w*lut[xyz+266496]; c2 += w*lut[xyz+528640]; 124 | w = ( tx)*( ty)*( tz); c0 += w*lut[xyz+4353]; c1 += w*lut[xyz+266497]; c2 += w*lut[xyz+528641]; 125 | 126 | c0 /= 255.0 127 | c1 /= 255.0 128 | c2 /= 255.0 129 | 130 | var c3 = 1.0 - (c0 + c1 + c2) 131 | 132 | var c00 = c0 * c0 133 | var c11 = c1 * c1 134 | var c22 = c2 * c2 135 | var c33 = c3 * c3 136 | var c01 = c0 * c1 137 | var c02 = c0 * c2 138 | var c12 = c1 * c2 139 | 140 | var rmix = 0.0 141 | var gmix = 0.0 142 | var bmix = 0.0 143 | 144 | w = c0*c00; rmix += +0.07717053*w; gmix += +0.02826978*w; bmix += +0.24832992*w; 145 | w = c1*c11; rmix += +0.95912302*w; gmix += +0.80256528*w; bmix += +0.03561839*w; 146 | w = c2*c22; rmix += +0.74683774*w; gmix += +0.04868586*w; bmix += +0.00000000*w; 147 | w = c3*c33; rmix += +0.99518138*w; gmix += +0.99978149*w; bmix += +0.99704802*w; 148 | w = c00*c1; rmix += +0.04819146*w; gmix += +0.83363781*w; bmix += +0.32515377*w; 149 | w = c01*c1; rmix += -0.68146950*w; gmix += +1.46107803*w; bmix += +1.06980936*w; 150 | w = c00*c2; rmix += +0.27058419*w; gmix += -0.15324870*w; bmix += +1.98735057*w; 151 | w = c02*c2; rmix += +0.80478189*w; gmix += +0.67093710*w; bmix += +0.18424500*w; 152 | w = c00*c3; rmix += -0.35031003*w; gmix += +1.37855826*w; bmix += +3.68865000*w; 153 | w = c0*c33; rmix += +1.05128046*w; gmix += +1.97815239*w; bmix += +2.82989073*w; 154 | w = c11*c2; rmix += +3.21607125*w; gmix += +0.81270228*w; bmix += +1.03384539*w; 155 | w = c1*c22; rmix += +2.78893374*w; gmix += +0.41565549*w; bmix += -0.04487295*w; 156 | w = c11*c3; rmix += +3.02162577*w; gmix += +2.55374103*w; bmix += +0.32766114*w; 157 | w = c1*c33; rmix += +2.95124691*w; gmix += +2.81201112*w; bmix += +1.17578442*w; 158 | w = c22*c3; rmix += +2.82677043*w; gmix += +0.79933038*w; bmix += +1.81715262*w; 159 | w = c2*c33; rmix += +2.99691099*w; gmix += +1.22593053*w; bmix += +1.80653661*w; 160 | w = c01*c2; rmix += +1.87394106*w; gmix += +2.05027182*w; bmix += -0.29835996*w; 161 | w = c01*c3; rmix += +2.56609566*w; gmix += +7.03428198*w; bmix += +0.62575374*w; 162 | w = c02*c3; rmix += +4.08329484*w; gmix += -1.40408358*w; bmix += +2.14995522*w; 163 | w = c12*c3; rmix += +6.00078678*w; gmix += +2.55552042*w; bmix += +1.90739502*w; 164 | 165 | return [ 166 | c0, 167 | c1, 168 | c2, 169 | c3, 170 | r - rmix, 171 | g - gmix, 172 | b - bmix, 173 | ] 174 | 175 | static func latent_to_rgb(latent) -> Color: 176 | var rgb = eval_polynomial(latent[0], latent[1], latent[2], latent[3]) 177 | return Color( 178 | clamp01(rgb.r + latent[4]), 179 | clamp01(rgb.g + latent[5]), 180 | clamp01(rgb.b + latent[6]) 181 | ); 182 | 183 | static func lerp(color1 : Color, color2 : Color, t : float) -> Color: 184 | var latent1 = rgb_to_latent(color1) 185 | var latent2 = rgb_to_latent(color2) 186 | 187 | var latent_mix = [] 188 | 189 | latent_mix.resize(LATENT_SIZE) 190 | 191 | for i in latent_mix.size(): 192 | latent_mix[i] = (1.0-t)*latent1[i] + t*latent2[i] 193 | 194 | var color_mix = latent_to_rgb(latent_mix) 195 | 196 | color_mix.a = (1.0-t)*color1.a + t*color2.a 197 | 198 | return color_mix 199 | -------------------------------------------------------------------------------- /unity/Samples~/SamplesHDRP/Materials/MixboxSampleHDRPShaderGraphMaterial.mat: -------------------------------------------------------------------------------- 1 | %YAML 1.1 2 | %TAG !u! tag:unity3d.com,2011: 3 | --- !u!114 &-6293881395593774545 4 | MonoBehaviour: 5 | m_ObjectHideFlags: 11 6 | m_CorrespondingSourceObject: {fileID: 0} 7 | m_PrefabInstance: {fileID: 0} 8 | m_PrefabAsset: {fileID: 0} 9 | m_GameObject: {fileID: 0} 10 | m_Enabled: 1 11 | m_EditorHideFlags: 0 12 | m_Script: {fileID: 11500000, guid: da692e001514ec24dbc4cca1949ff7e8, type: 3} 13 | m_Name: 14 | m_EditorClassIdentifier: 15 | version: 12 16 | hdPluginSubTargetMaterialVersions: 17 | m_Keys: [] 18 | m_Values: 19 | --- !u!21 &2100000 20 | Material: 21 | serializedVersion: 8 22 | m_ObjectHideFlags: 0 23 | m_CorrespondingSourceObject: {fileID: 0} 24 | m_PrefabInstance: {fileID: 0} 25 | m_PrefabAsset: {fileID: 0} 26 | m_Name: MixboxSampleHDRPShaderGraphMaterial 27 | m_Shader: {fileID: -6465566751694194690, guid: 5078a8abaf2327c44bdceef809b956b1, 28 | type: 3} 29 | m_ValidKeywords: [] 30 | m_InvalidKeywords: 31 | - 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All rights reserved. 3 | // License: Creative Commons Attribution-NonCommercial 4.0 4 | // Authors: Sarka Sochorova and Ondrej Jamriska 5 | // ========================================================== 6 | // 7 | // BASIC USAGE 8 | // 9 | // let rgb_mix = mixbox::lerp(&rgb1, &rgb2, t); 10 | // 11 | // MULTI-COLOR MIXING 12 | // 13 | // let z1 = mixbox::rgb_to_latent(&rgb1); 14 | // let z2 = mixbox::rgb_to_latent(&rgb2); 15 | // let z3 = mixbox::rgb_to_latent(&rgb3); 16 | // 17 | // let mut z_mix = [0.0; mixbox::LATENT_SIZE]; 18 | // 19 | // for i in 0..z_mix.len() { // mix together: 20 | // z_mix[i] = 0.3*z1[i] + // 30% of rgb1 21 | // 0.6*z2[i] + // 60% of rgb2 22 | // 0.1*z3[i]; // 10% of rgb3 23 | // } 24 | // 25 | // let rgb_mix = mixbox::latent_to_rgb(&z_mix); 26 | // 27 | // PIGMENT COLORS 28 | // 29 | // Cadmium Yellow 254, 236, 0 30 | // Hansa Yellow 252, 211, 0 31 | // Cadmium Orange 255, 105, 0 32 | // Cadmium Red 255, 39, 2 33 | // Quinacridone Magenta 128, 2, 46 34 | // Cobalt Violet 78, 0, 66 35 | // Ultramarine Blue 25, 0, 89 36 | // Cobalt Blue 0, 33, 133 37 | // Phthalo Blue 13, 27, 68 38 | // Phthalo Green 0, 60, 50 39 | // Permanent Green 7, 109, 22 40 | // Sap Green 107, 148, 4 41 | // Burnt Sienna 123, 72, 0 42 | // 43 | // LICENSING 44 | // 45 | // If you want to obtain commercial license, please 46 | // contact us at: mixbox@scrtwpns.com 47 | // 48 | 49 | #![no_std] 50 | 51 | use libm::powf; 52 | 53 | pub const LATENT_SIZE: usize = 7; 54 | 55 | const MIXBOX_LUT : &[u8] = include_bytes!("lut.dat"); 56 | 57 | #[inline(always)] 58 | fn clamp01(x: f32) -> f32 { 59 | if x < 0.0 { 60 | 0.0 61 | } else if x > 1.0 { 62 | 1.0 63 | } else { 64 | x 65 | } 66 | } 67 | 68 | #[inline(always)] 69 | fn srgb_to_linear(x: f32) -> f32 { 70 | if x >= 0.04045 { 71 | powf((x + 0.055) / 1.055, 2.4) 72 | } else { 73 | x / 12.92 74 | } 75 | } 76 | 77 | #[inline(always)] 78 | fn linear_to_srgb(x: f32) -> f32 { 79 | if x >= 0.0031308 { 80 | 1.055 * powf(x, 1.0 / 2.4) - 0.055 81 | } else { 82 | 12.92 * x 83 | } 84 | } 85 | 86 | #[inline(always)] 87 | fn eval_polynomial(c0: f32, c1: f32, c2: f32, c3: f32) -> [f32; 3] { 88 | let c00 = c0 * c0; 89 | let c11 = c1 * c1; 90 | let c22 = c2 * c2; 91 | let c33 = c3 * c3; 92 | let c01 = c0 * c1; 93 | let c02 = c0 * c2; 94 | let c12 = c1 * c2; 95 | 96 | let mut r = 0.0; 97 | let mut g = 0.0; 98 | let mut b = 0.0; 99 | 100 | let w00 = c0 * c00; r += 0.07717053*w00; g += 0.02826978*w00; b += 0.24832992*w00; 101 | let w01 = c1 * c11; r += 0.95912302*w01; g += 0.80256528*w01; b += 0.03561839*w01; 102 | let w02 = c2 * c22; r += 0.74683774*w02; g += 0.04868586*w02; b += 0.00000000*w02; 103 | let w03 = c3 * c33; r += 0.99518138*w03; g += 0.99978149*w03; b += 0.99704802*w03; 104 | let w04 = c00 * c1; r += 0.04819146*w04; g += 0.83363781*w04; b += 0.32515377*w04; 105 | let w05 = c01 * c1; r += -0.68146950*w05; g += 1.46107803*w05; b += 1.06980936*w05; 106 | let w06 = c00 * c2; r += 0.27058419*w06; g += -0.15324870*w06; b += 1.98735057*w06; 107 | let w07 = c02 * c2; r += 0.80478189*w07; g += 0.67093710*w07; b += 0.18424500*w07; 108 | let w08 = c00 * c3; r += -0.35031003*w08; g += 1.37855826*w08; b += 3.68865000*w08; 109 | let w09 = c0 * c33; r += 1.05128046*w09; g += 1.97815239*w09; b += 2.82989073*w09; 110 | let w10 = c11 * c2; r += 3.21607125*w10; g += 0.81270228*w10; b += 1.03384539*w10; 111 | let w11 = c1 * c22; r += 2.78893374*w11; g += 0.41565549*w11; b += -0.04487295*w11; 112 | let w12 = c11 * c3; r += 3.02162577*w12; g += 2.55374103*w12; b += 0.32766114*w12; 113 | let w13 = c1 * c33; r += 2.95124691*w13; g += 2.81201112*w13; b += 1.17578442*w13; 114 | let w14 = c22 * c3; r += 2.82677043*w14; g += 0.79933038*w14; b += 1.81715262*w14; 115 | let w15 = c2 * c33; r += 2.99691099*w15; g += 1.22593053*w15; b += 1.80653661*w15; 116 | let w16 = c01 * c2; r += 1.87394106*w16; g += 2.05027182*w16; b += -0.29835996*w16; 117 | let w17 = c01 * c3; r += 2.56609566*w17; g += 7.03428198*w17; b += 0.62575374*w17; 118 | let w18 = c02 * c3; r += 4.08329484*w18; g += -1.40408358*w18; b += 2.14995522*w18; 119 | let w19 = c12 * c3; r += 6.00078678*w19; g += 2.55552042*w19; b += 1.90739502*w19; 120 | 121 | [r, g, b] 122 | } 123 | 124 | pub fn float_rgb_to_latent(rgb: &[f32; 3]) -> [f32; LATENT_SIZE] { 125 | let r01 = clamp01(rgb[0]); 126 | let g01 = clamp01(rgb[1]); 127 | let b01 = clamp01(rgb[2]); 128 | 129 | let x = r01 * 63.0; 130 | let y = g01 * 63.0; 131 | let z = b01 * 63.0; 132 | 133 | let ix = x as i32; 134 | let iy = y as i32; 135 | let iz = z as i32; 136 | 137 | let tx = x - (ix as f32); 138 | let ty = y - (iy as f32); 139 | let tz = z - (iz as f32); 140 | 141 | let lut = &MIXBOX_LUT[(((ix + iy*64 + iz*64*64) & 0x3FFFF) * 3) as usize ..]; 142 | 143 | let mut c0 = 0.0; 144 | let mut c1 = 0.0; 145 | let mut c2 = 0.0; 146 | 147 | let w0 = (1.0-tx)*(1.0-ty)*(1.0-tz); c0 += w0*(lut[ 192] as f32); c1 += w0*(lut[ 193] as f32); c2 += w0*(lut[ 194] as f32); 148 | let w1 = ( tx)*(1.0-ty)*(1.0-tz); c0 += w1*(lut[ 195] as f32); c1 += w1*(lut[ 196] as f32); c2 += w1*(lut[ 197] as f32); 149 | let w2 = (1.0-tx)*( ty)*(1.0-tz); c0 += w2*(lut[ 384] as f32); c1 += w2*(lut[ 385] as f32); c2 += w2*(lut[ 386] as f32); 150 | let w3 = ( tx)*( ty)*(1.0-tz); c0 += w3*(lut[ 387] as f32); c1 += w3*(lut[ 388] as f32); c2 += w3*(lut[ 389] as f32); 151 | let w4 = (1.0-tx)*(1.0-ty)*( tz); c0 += w4*(lut[12480] as f32); c1 += w4*(lut[12481] as f32); c2 += w4*(lut[12482] as f32); 152 | let w5 = ( tx)*(1.0-ty)*( tz); c0 += w5*(lut[12483] as f32); c1 += w5*(lut[12484] as f32); c2 += w5*(lut[12485] as f32); 153 | let w6 = (1.0-tx)*( ty)*( tz); c0 += w6*(lut[12672] as f32); c1 += w6*(lut[12673] as f32); c2 += w6*(lut[12674] as f32); 154 | let w7 = ( tx)*( ty)*( tz); c0 += w7*(lut[12675] as f32); c1 += w7*(lut[12676] as f32); c2 += w7*(lut[12677] as f32); 155 | 156 | c0 *= 1.0 / 255.0; 157 | c1 *= 1.0 / 255.0; 158 | c2 *= 1.0 / 255.0; 159 | 160 | let c3 = 1.0 - (c0 + c1 + c2); 161 | 162 | let mixrgb = eval_polynomial(c0, c1, c2, c3); 163 | 164 | [ 165 | c0, 166 | c1, 167 | c2, 168 | c3, 169 | r01 - mixrgb[0], 170 | g01 - mixrgb[1], 171 | b01 - mixrgb[2], 172 | ] 173 | } 174 | 175 | pub fn latent_to_float_rgb(latent: &[f32; LATENT_SIZE]) -> [f32; 3] { 176 | let rgb = eval_polynomial(latent[0], latent[1], latent[2], latent[3]); 177 | 178 | [ 179 | clamp01(rgb[0] + latent[4]), 180 | clamp01(rgb[1] + latent[5]), 181 | clamp01(rgb[2] + latent[6]), 182 | ] 183 | } 184 | 185 | pub fn latent_to_rgb(latent: &[f32; LATENT_SIZE]) -> [u8; 3] { 186 | let rgb = latent_to_float_rgb(latent); 187 | 188 | [ 189 | (rgb[0] * 255.0 + 0.5) as u8, 190 | (rgb[1] * 255.0 + 0.5) as u8, 191 | (rgb[2] * 255.0 + 0.5) as u8, 192 | ] 193 | } 194 | 195 | pub fn rgb_to_latent(rgb: &[u8; 3]) -> [f32; LATENT_SIZE] { 196 | float_rgb_to_latent(&[ 197 | (rgb[0] as f32) / 255.0, 198 | (rgb[1] as f32) / 255.0, 199 | (rgb[2] as f32) / 255.0 200 | ]) 201 | } 202 | 203 | pub fn linear_float_rgb_to_latent(rgb: &[f32; 3]) -> [f32; LATENT_SIZE] { 204 | float_rgb_to_latent(&[ 205 | linear_to_srgb(rgb[0]), 206 | linear_to_srgb(rgb[1]), 207 | linear_to_srgb(rgb[2]), 208 | ]) 209 | } 210 | 211 | pub fn latent_to_linear_float_rgb(latent: &[f32; LATENT_SIZE]) -> [f32; 3] { 212 | let rgb = latent_to_float_rgb(latent); 213 | 214 | [ 215 | srgb_to_linear(rgb[0]), 216 | srgb_to_linear(rgb[1]), 217 | srgb_to_linear(rgb[2]), 218 | ] 219 | } 220 | 221 | pub fn lerp(rgb1: &[u8; 3], rgb2: &[u8; 3], t: f32) -> [u8; 3] { 222 | let latent1 = rgb_to_latent(rgb1); 223 | let latent2 = rgb_to_latent(rgb2); 224 | 225 | let mut latent_mix = [0.0; LATENT_SIZE]; 226 | 227 | for i in 0..latent_mix.len() { 228 | latent_mix[i] = (1.0 - t) * latent1[i] + t * latent2[i]; 229 | } 230 | 231 | latent_to_rgb(&latent_mix) 232 | } 233 | 234 | pub fn lerp_float(rgb1: &[f32; 3], rgb2: &[f32; 3], t: f32) -> [f32; 3] { 235 | let latent1 = float_rgb_to_latent(rgb1); 236 | let latent2 = float_rgb_to_latent(rgb2); 237 | 238 | let mut latent_mix = [0.0; LATENT_SIZE]; 239 | 240 | for i in 0..latent_mix.len() { 241 | latent_mix[i] = (1.0 - t) * latent1[i] + t * latent2[i]; 242 | } 243 | 244 | latent_to_float_rgb(&latent_mix) 245 | } 246 | 247 | pub fn lerp_linear_float(rgb1: &[f32; 3], rgb2: &[f32; 3], t: f32) -> [f32; 3] { 248 | let latent1 = linear_float_rgb_to_latent(rgb1); 249 | let latent2 = linear_float_rgb_to_latent(rgb2); 250 | 251 | let mut latent_mix = [0.0; LATENT_SIZE]; 252 | 253 | for i in 0..latent_mix.len() { 254 | latent_mix[i] = (1.0 - t) * latent1[i] + t * latent2[i]; 255 | } 256 | 257 | latent_to_linear_float_rgb(&latent_mix) 258 | } 259 | -------------------------------------------------------------------------------- /unity/Samples~/SamplesBuiltin/Scenes/Scene.unity: -------------------------------------------------------------------------------- 1 | %YAML 1.1 2 | %TAG !u! tag:unity3d.com,2011: 3 | --- !u!29 &1 4 | OcclusionCullingSettings: 5 | 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