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add mixbox for godot
This commit is contained in:
Ondrej Jamriska
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godot/README.md
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godot/README.md
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# Mixbox for Godot
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```gdscript
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var Mixbox = preload("res://addons/mixbox/mixbox.gd")
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var color1 = Color(0.0, 0.129, 0.522) # blue
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var color2 = Color(0.988, 0.827, 0.0) # yellow
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var t = 0.5 # mixing ratio
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var color_mix = Mixbox.lerp(color1, color2, t)
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print(color_mix)
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```
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## Mixing Multiple Colors
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```gdscript
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var z1 = Mixbox.rgb_to_latent(color1)
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var z2 = Mixbox.rgb_to_latent(color2)
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var z3 = Mixbox.rgb_to_latent(color3)
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var z_mix = []
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z_mix.resize(Mixbox.LATENT_SIZE)
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for i in z_mix.size(): # mix together:
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z_mix[i] = (0.3*z1[i] + # 30% of color1
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0.6*z2[i] + # 60% of color2
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0.1*z3[i]) # 10% of color3
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var color_mix = Mixbox.latent_to_rgb(z_mix)
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```
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# Shader
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```c++
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shader_type canvas_item;
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uniform sampler2D mixbox_lut; // attach "addons/mixbox/mixbox_lut.png" here
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uniform vec4 color1 : hint_color = vec4(0.0, 0.129, 0.522, 1.0); // blue
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uniform vec4 color2 : hint_color = vec4(0.988, 0.827, 0.0, 1.0); // yellow
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// #include only works in Godot 4, if you are on Godot 3.X
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// you will need to paste the Mixbox code here manually.
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#include "addons/mixbox/mixbox.gdshaderinc"
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void fragment() {
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COLOR = mixbox_lerp(color1, color2, UV.x);
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}
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```
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<p align="center">
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<img src="https://scrtwpns.com/mixbox/godot/mixboxlut-howto.png"/>
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</p>
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## Mixing Multiple Colors
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```glsl
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mat3 z1 = mixbox_rgb_to_latent(color1.rgb);
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mat3 z2 = mixbox_rgb_to_latent(color2.rgb);
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mat3 z3 = mixbox_rgb_to_latent(color3.rgb);
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// mix together 30% of color1, 60% of color2, and 10% of color3
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mat3 z_mix = 0.3*z1 + 0.6*z2 + 0.1*z3;
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vec3 rgb_mix = mixbox_latent_to_rgb(z_mix);
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```
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# VisualShader
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<p align="center">
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<img src="https://scrtwpns.com/mixbox/godot/visualshader_.png"/>
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</p>
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## Pigment Colors
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| Pigment | | RGB | Float RGB | Linear RGB |
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| --- | --- |:----:|:----:|:----:|
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| Cadmium Yellow | <img src="https://scrtwpns.com/mixbox/pigments/cadmium_yellow.png"/> | 254, 236, 0 | 0.996, 0.925, 0.0 | 0.991, 0.839, 0.0 |
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| Hansa Yellow | <img src="https://scrtwpns.com/mixbox/pigments/hansa_yellow.png"/> | 252, 211, 0 | 0.988, 0.827, 0.0 | 0.973, 0.651, 0.0 |
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| Cadmium Orange | <img src="https://scrtwpns.com/mixbox/pigments/cadmium_orange.png"/> | 255, 105, 0 | 1.0, 0.412, 0.0 | 1.0, 0.141, 0.0 |
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| Cadmium Red | <img src="https://scrtwpns.com/mixbox/pigments/cadmium_red.png"/> | 255, 39, 2 | 1.0, 0.153, 0.008 | 1.0, 0.02, 0.001 |
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| Quinacridone Magenta | <img src="https://scrtwpns.com/mixbox/pigments/quinacridone_magenta.png"/> | 128, 2, 46 | 0.502, 0.008, 0.18 | 0.216, 0.001, 0.027 |
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| Cobalt Violet | <img src="https://scrtwpns.com/mixbox/pigments/cobalt_violet.png"/> | 78, 0, 66 | 0.306, 0.0, 0.259 | 0.076, 0.0, 0.054 |
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| Ultramarine Blue | <img src="https://scrtwpns.com/mixbox/pigments/ultramarine_blue.png"/> | 25, 0, 89 | 0.098, 0.0, 0.349 | 0.01, 0.0, 0.1 |
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| Cobalt Blue | <img src="https://scrtwpns.com/mixbox/pigments/cobalt_blue.png"/> | 0, 33, 133 | 0.0, 0.129, 0.522 | 0.0, 0.015, 0.235 |
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| Phthalo Blue | <img src="https://scrtwpns.com/mixbox/pigments/phthalo_blue.png"/> | 13, 27, 68 | 0.051, 0.106, 0.267 | 0.004, 0.011, 0.058 |
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| Phthalo Green | <img src="https://scrtwpns.com/mixbox/pigments/phthalo_green.png"/> | 0, 60, 50 | 0.0, 0.235, 0.196 | 0.0, 0.045, 0.032 |
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| Permanent Green | <img src="https://scrtwpns.com/mixbox/pigments/permanent_green.png"/> | 7, 109, 22 | 0.027, 0.427, 0.086 | 0.002, 0.153, 0.008 |
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| Sap Green | <img src="https://scrtwpns.com/mixbox/pigments/sap_green.png"/> | 107, 148, 4 | 0.42, 0.58, 0.016 | 0.147, 0.296, 0.001 |
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| Burnt Sienna | <img src="https://scrtwpns.com/mixbox/pigments/burnt_sienna.png"/> | 123, 72, 0 | 0.482, 0.282, 0.0 | 0.198, 0.065, 0.0 |
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## License
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Copyright (c) 2022, Secret Weapons. All rights reserved.<br>
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Mixbox is provided under the CC BY-NC 4.0 license for non-commercial use only.<br>
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If you want to obtain commercial license, please contact: mixbox@scrtwpns.com
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godot/addons/mixbox/mixbox.gd
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godot/addons/mixbox/mixbox.gd
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# ==========================================================
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# MIXBOX 2.0 (c) 2022 Secret Weapons. All rights reserved.
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# License: Creative Commons Attribution-NonCommercial 4.0
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# Authors: Sarka Sochorova and Ondrej Jamriska
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# ==========================================================
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#
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# BASIC USAGE
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#
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# var color_mix = Mixbox.lerp(color1, color2, t)
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#
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# MULTI-COLOR MIXING
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#
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# var z1 = Mixbox.rgb_to_latent(color1)
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# var z2 = Mixbox.rgb_to_latent(color2)
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# var z3 = Mixbox.rgb_to_latent(color3)
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#
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# var z_mix = []
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# z_mix.resize(Mixbox.LATENT_SIZE)
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#
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# for i in z_mix.size(): # mix together:
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# z_mix[i] = (0.3*z1[i] + # 30% of color1
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# 0.6*z2[i] + # 60% of color2
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# 0.1*z3[i]) # 10% of color3
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#
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# var color_mix = Mixbox.latent_to_rgb(z_mix)
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#
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# PIGMENT COLORS
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#
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# Cadmium Yellow 0.996, 0.925, 0.000
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# Hansa Yellow 0.988, 0.827, 0.000
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# Cadmium Orange 1.000, 0.412, 0.000
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# Cadmium Red 1.000, 0.153, 0.008
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# Quinacridone Magenta 0.502, 0.008, 0.180
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# Cobalt Violet 0.306, 0.000, 0.259
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# Ultramarine Blue 0.098, 0.000, 0.349
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# Cobalt Blue 0.000, 0.129, 0.522
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# Phthalo Blue 0.051, 0.106, 0.267
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# Phthalo Green 0.000, 0.235, 0.196
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# Permanent Green 0.027, 0.427, 0.086
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# Sap Green 0.420, 0.580, 0.016
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# Burnt Sienna 0.482, 0.282, 0.000
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#
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# LICENSING
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#
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# If you want to obtain commercial license, please
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# contact us at: mixbox@scrtwpns.com
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#
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const lut = preload("mixbox.res").__data__
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const LATENT_SIZE = 7
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static func clamp01(value : float) -> float:
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return clamp(value, 0.0, 1.0)
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static func eval_polynomial(c0 : float, c1 : float, c2 : float, c3 : float) -> Color:
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var r = 0.0
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var g = 0.0
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var b = 0.0
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var c00 = c0 * c0
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var c11 = c1 * c1
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var c22 = c2 * c2
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var c33 = c3 * c3
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var c01 = c0 * c1
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var c02 = c0 * c2
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var c12 = c1 * c2
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var w = 0.0
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w = c0*c00; r += +0.07717053*w; g += +0.02826978*w; b += +0.24832992*w;
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w = c1*c11; r += +0.95912302*w; g += +0.80256528*w; b += +0.03561839*w;
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w = c2*c22; r += +0.74683774*w; g += +0.04868586*w; b += +0.00000000*w;
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w = c3*c33; r += +0.99518138*w; g += +0.99978149*w; b += +0.99704802*w;
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w = c00*c1; r += +0.04819146*w; g += +0.83363781*w; b += +0.32515377*w;
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w = c01*c1; r += -0.68146950*w; g += +1.46107803*w; b += +1.06980936*w;
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w = c00*c2; r += +0.27058419*w; g += -0.15324870*w; b += +1.98735057*w;
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w = c02*c2; r += +0.80478189*w; g += +0.67093710*w; b += +0.18424500*w;
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w = c00*c3; r += -0.35031003*w; g += +1.37855826*w; b += +3.68865000*w;
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w = c0*c33; r += +1.05128046*w; g += +1.97815239*w; b += +2.82989073*w;
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w = c11*c2; r += +3.21607125*w; g += +0.81270228*w; b += +1.03384539*w;
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w = c1*c22; r += +2.78893374*w; g += +0.41565549*w; b += -0.04487295*w;
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w = c11*c3; r += +3.02162577*w; g += +2.55374103*w; b += +0.32766114*w;
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w = c1*c33; r += +2.95124691*w; g += +2.81201112*w; b += +1.17578442*w;
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w = c22*c3; r += +2.82677043*w; g += +0.79933038*w; b += +1.81715262*w;
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w = c2*c33; r += +2.99691099*w; g += +1.22593053*w; b += +1.80653661*w;
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w = c01*c2; r += +1.87394106*w; g += +2.05027182*w; b += -0.29835996*w;
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w = c01*c3; r += +2.56609566*w; g += +7.03428198*w; b += +0.62575374*w;
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w = c02*c3; r += +4.08329484*w; g += -1.40408358*w; b += +2.14995522*w;
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w = c12*c3; r += +6.00078678*w; g += +2.55552042*w; b += +1.90739502*w;
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return Color(r, g, b)
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static func rgb_to_latent(color : Color) -> Array:
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var r = clamp01(color.r)
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var g = clamp01(color.g)
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var b = clamp01(color.b)
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var x = r * 63.0
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var y = g * 63.0
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var z = b * 63.0
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var ix = int(x)
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var iy = int(y)
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var iz = int(z)
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var tx = x - ix
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var ty = y - iy
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var tz = z - iz
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var xyz = ix + iy*64 + iz*64*64
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var c0 = 0.0
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var c1 = 0.0
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var c2 = 0.0
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var w = 0.0
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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];
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w = ( tx)*(1.0-ty)*(1.0-tz); c0 += w*lut[xyz+ 193]; c1 += w*lut[xyz+262337]; c2 += w*lut[xyz+524481];
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w = (1.0-tx)*( ty)*(1.0-tz); c0 += w*lut[xyz+ 256]; c1 += w*lut[xyz+262400]; c2 += w*lut[xyz+524544];
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w = ( tx)*( ty)*(1.0-tz); c0 += w*lut[xyz+ 257]; c1 += w*lut[xyz+262401]; c2 += w*lut[xyz+524545];
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w = (1.0-tx)*(1.0-ty)*( tz); c0 += w*lut[xyz+4288]; c1 += w*lut[xyz+266432]; c2 += w*lut[xyz+528576];
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w = ( tx)*(1.0-ty)*( tz); c0 += w*lut[xyz+4289]; c1 += w*lut[xyz+266433]; c2 += w*lut[xyz+528577];
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w = (1.0-tx)*( ty)*( tz); c0 += w*lut[xyz+4352]; c1 += w*lut[xyz+266496]; c2 += w*lut[xyz+528640];
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w = ( tx)*( ty)*( tz); c0 += w*lut[xyz+4353]; c1 += w*lut[xyz+266497]; c2 += w*lut[xyz+528641];
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c0 /= 255.0
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c1 /= 255.0
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c2 /= 255.0
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var c3 = 1.0 - (c0 + c1 + c2)
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var c00 = c0 * c0
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var c11 = c1 * c1
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var c22 = c2 * c2
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var c33 = c3 * c3
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var c01 = c0 * c1
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var c02 = c0 * c2
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var c12 = c1 * c2
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var rmix = 0.0
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var gmix = 0.0
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var bmix = 0.0
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w = c0*c00; rmix += +0.07717053*w; gmix += +0.02826978*w; bmix += +0.24832992*w;
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w = c1*c11; rmix += +0.95912302*w; gmix += +0.80256528*w; bmix += +0.03561839*w;
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w = c2*c22; rmix += +0.74683774*w; gmix += +0.04868586*w; bmix += +0.00000000*w;
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w = c3*c33; rmix += +0.99518138*w; gmix += +0.99978149*w; bmix += +0.99704802*w;
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w = c00*c1; rmix += +0.04819146*w; gmix += +0.83363781*w; bmix += +0.32515377*w;
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w = c01*c1; rmix += -0.68146950*w; gmix += +1.46107803*w; bmix += +1.06980936*w;
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w = c00*c2; rmix += +0.27058419*w; gmix += -0.15324870*w; bmix += +1.98735057*w;
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w = c02*c2; rmix += +0.80478189*w; gmix += +0.67093710*w; bmix += +0.18424500*w;
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w = c00*c3; rmix += -0.35031003*w; gmix += +1.37855826*w; bmix += +3.68865000*w;
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w = c0*c33; rmix += +1.05128046*w; gmix += +1.97815239*w; bmix += +2.82989073*w;
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w = c11*c2; rmix += +3.21607125*w; gmix += +0.81270228*w; bmix += +1.03384539*w;
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w = c1*c22; rmix += +2.78893374*w; gmix += +0.41565549*w; bmix += -0.04487295*w;
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w = c11*c3; rmix += +3.02162577*w; gmix += +2.55374103*w; bmix += +0.32766114*w;
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w = c1*c33; rmix += +2.95124691*w; gmix += +2.81201112*w; bmix += +1.17578442*w;
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w = c22*c3; rmix += +2.82677043*w; gmix += +0.79933038*w; bmix += +1.81715262*w;
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w = c2*c33; rmix += +2.99691099*w; gmix += +1.22593053*w; bmix += +1.80653661*w;
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w = c01*c2; rmix += +1.87394106*w; gmix += +2.05027182*w; bmix += -0.29835996*w;
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w = c01*c3; rmix += +2.56609566*w; gmix += +7.03428198*w; bmix += +0.62575374*w;
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w = c02*c3; rmix += +4.08329484*w; gmix += -1.40408358*w; bmix += +2.14995522*w;
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w = c12*c3; rmix += +6.00078678*w; gmix += +2.55552042*w; bmix += +1.90739502*w;
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return [
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c0,
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c1,
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c2,
|
||||||
|
c3,
|
||||||
|
r - rmix,
|
||||||
|
g - gmix,
|
||||||
|
b - bmix,
|
||||||
|
]
|
||||||
|
|
||||||
|
static func latent_to_rgb(latent) -> Color:
|
||||||
|
var rgb = eval_polynomial(latent[0], latent[1], latent[2], latent[3])
|
||||||
|
return Color(
|
||||||
|
clamp01(rgb.r + latent[4]),
|
||||||
|
clamp01(rgb.g + latent[5]),
|
||||||
|
clamp01(rgb.b + latent[6])
|
||||||
|
);
|
||||||
|
|
||||||
|
static func lerp(color1 : Color, color2 : Color, t : float) -> Color:
|
||||||
|
var latent1 = rgb_to_latent(color1)
|
||||||
|
var latent2 = rgb_to_latent(color2)
|
||||||
|
|
||||||
|
var latent_mix = []
|
||||||
|
|
||||||
|
latent_mix.resize(LATENT_SIZE)
|
||||||
|
|
||||||
|
for i in latent_mix.size():
|
||||||
|
latent_mix[i] = (1.0-t)*latent1[i] + t*latent2[i]
|
||||||
|
|
||||||
|
var color_mix = latent_to_rgb(latent_mix)
|
||||||
|
|
||||||
|
color_mix.a = (1.0-t)*color1.a + t*color2.a
|
||||||
|
|
||||||
|
return color_mix
|
||||||
121
godot/addons/mixbox/mixbox.gdshader
Normal file
121
godot/addons/mixbox/mixbox.gdshader
Normal file
@@ -0,0 +1,121 @@
|
|||||||
|
// ==========================================================
|
||||||
|
// MIXBOX 2.0 (c) 2022 Secret Weapons. All rights reserved.
|
||||||
|
// License: Creative Commons Attribution-NonCommercial 4.0
|
||||||
|
// Authors: Sarka Sochorova and Ondrej Jamriska
|
||||||
|
// ==========================================================
|
||||||
|
//
|
||||||
|
// BASIC USAGE
|
||||||
|
//
|
||||||
|
// vec3 rgb = mixbox_lerp(rgb1, rgb2, t);
|
||||||
|
//
|
||||||
|
// MULTI-COLOR MIXING
|
||||||
|
//
|
||||||
|
// mat3 z1 = mixbox_rgb_to_latent(rgb1);
|
||||||
|
// mat3 z2 = mixbox_rgb_to_latent(rgb2);
|
||||||
|
// mat3 z3 = mixbox_rgb_to_latent(rgb3);
|
||||||
|
//
|
||||||
|
// // mix 30% of rgb1, 60% of rgb2, and 10% of rgb3
|
||||||
|
// mat3 z_mix = 0.3*z1 + 0.6*z2 + 0.1*z3;
|
||||||
|
//
|
||||||
|
// vec3 rgb_mix = mixbox_latent_to_rgb(z_mix);
|
||||||
|
//
|
||||||
|
// PIGMENT COLORS
|
||||||
|
//
|
||||||
|
// Cadmium Yellow 0.996, 0.925, 0.000
|
||||||
|
// Hansa Yellow 0.988, 0.827, 0.000
|
||||||
|
// Cadmium Orange 1.000, 0.412, 0.000
|
||||||
|
// Cadmium Red 1.000, 0.153, 0.008
|
||||||
|
// Quinacridone Magenta 0.502, 0.008, 0.180
|
||||||
|
// Cobalt Violet 0.306, 0.000, 0.259
|
||||||
|
// Ultramarine Blue 0.098, 0.000, 0.349
|
||||||
|
// Cobalt Blue 0.000, 0.129, 0.522
|
||||||
|
// Phthalo Blue 0.051, 0.106, 0.267
|
||||||
|
// Phthalo Green 0.000, 0.235, 0.196
|
||||||
|
// Permanent Green 0.027, 0.427, 0.086
|
||||||
|
// Sap Green 0.420, 0.580, 0.016
|
||||||
|
// Burnt Sienna 0.482, 0.282, 0.000
|
||||||
|
//
|
||||||
|
// LICENSING
|
||||||
|
//
|
||||||
|
// If you want to obtain commercial license, please
|
||||||
|
// contact us at: mixbox@scrtwpns.com
|
||||||
|
//
|
||||||
|
|
||||||
|
shader_type canvas_item;
|
||||||
|
|
||||||
|
uniform sampler2D mixbox_lut; // attach "addons/mixbox/mixbox_lut.png" here
|
||||||
|
|
||||||
|
uniform vec4 color1 : hint_color = vec4(0.0, 0.129, 0.522, 1.0); // blue
|
||||||
|
uniform vec4 color2 : hint_color = vec4(0.988, 0.827, 0.0, 1.0); // yellow
|
||||||
|
|
||||||
|
vec3 _mixbox_eval_polynomial(vec3 _mixbox_c) {
|
||||||
|
float _mixbox_c0 = _mixbox_c[0];
|
||||||
|
float _mixbox_c1 = _mixbox_c[1];
|
||||||
|
float _mixbox_c2 = _mixbox_c[2];
|
||||||
|
float _mixbox_c3 = 1.0 - (_mixbox_c0 + _mixbox_c1 + _mixbox_c2);
|
||||||
|
|
||||||
|
float _mixbox_c00 = _mixbox_c0 * _mixbox_c0;
|
||||||
|
float _mixbox_c11 = _mixbox_c1 * _mixbox_c1;
|
||||||
|
float _mixbox_c22 = _mixbox_c2 * _mixbox_c2;
|
||||||
|
float _mixbox_c01 = _mixbox_c0 * _mixbox_c1;
|
||||||
|
float _mixbox_c02 = _mixbox_c0 * _mixbox_c2;
|
||||||
|
float _mixbox_c12 = _mixbox_c1 * _mixbox_c2;
|
||||||
|
float _mixbox_c33 = _mixbox_c3 * _mixbox_c3;
|
||||||
|
|
||||||
|
return (
|
||||||
|
(_mixbox_c0 * _mixbox_c00) * vec3(+0.07717053, +0.02826978, +0.24832992) +
|
||||||
|
(_mixbox_c1 * _mixbox_c11) * vec3(+0.95912302, +0.80256528, +0.03561839) +
|
||||||
|
(_mixbox_c2 * _mixbox_c22) * vec3(+0.74683774, +0.04868586, +0.00000000) +
|
||||||
|
(_mixbox_c3 * _mixbox_c33) * vec3(+0.99518138, +0.99978149, +0.99704802) +
|
||||||
|
(_mixbox_c00 * _mixbox_c1) * vec3(+0.04819146, +0.83363781, +0.32515377) +
|
||||||
|
(_mixbox_c01 * _mixbox_c1) * vec3(-0.68146950, +1.46107803, +1.06980936) +
|
||||||
|
(_mixbox_c00 * _mixbox_c2) * vec3(+0.27058419, -0.15324870, +1.98735057) +
|
||||||
|
(_mixbox_c02 * _mixbox_c2) * vec3(+0.80478189, +0.67093710, +0.18424500) +
|
||||||
|
(_mixbox_c00 * _mixbox_c3) * vec3(-0.35031003, +1.37855826, +3.68865000) +
|
||||||
|
(_mixbox_c0 * _mixbox_c33) * vec3(+1.05128046, +1.97815239, +2.82989073) +
|
||||||
|
(_mixbox_c11 * _mixbox_c2) * vec3(+3.21607125, +0.81270228, +1.03384539) +
|
||||||
|
(_mixbox_c1 * _mixbox_c22) * vec3(+2.78893374, +0.41565549, -0.04487295) +
|
||||||
|
(_mixbox_c11 * _mixbox_c3) * vec3(+3.02162577, +2.55374103, +0.32766114) +
|
||||||
|
(_mixbox_c1 * _mixbox_c33) * vec3(+2.95124691, +2.81201112, +1.17578442) +
|
||||||
|
(_mixbox_c22 * _mixbox_c3) * vec3(+2.82677043, +0.79933038, +1.81715262) +
|
||||||
|
(_mixbox_c2 * _mixbox_c33) * vec3(+2.99691099, +1.22593053, +1.80653661) +
|
||||||
|
(_mixbox_c01 * _mixbox_c2) * vec3(+1.87394106, +2.05027182, -0.29835996) +
|
||||||
|
(_mixbox_c01 * _mixbox_c3) * vec3(+2.56609566, +7.03428198, +0.62575374) +
|
||||||
|
(_mixbox_c02 * _mixbox_c3) * vec3(+4.08329484, -1.40408358, +2.14995522) +
|
||||||
|
(_mixbox_c12 * _mixbox_c3) * vec3(+6.00078678, +2.55552042, +1.90739502));
|
||||||
|
}
|
||||||
|
|
||||||
|
mat3 mixbox_rgb_to_latent(vec3 _mixbox_rgb) {
|
||||||
|
_mixbox_rgb = clamp(_mixbox_rgb, 0.0, 1.0);
|
||||||
|
|
||||||
|
float _mixbox_x = _mixbox_rgb.r * 63.0;
|
||||||
|
float _mixbox_y = _mixbox_rgb.g * 63.0;
|
||||||
|
float _mixbox_z = _mixbox_rgb.b * 63.0;
|
||||||
|
|
||||||
|
float _mixbox_iz = floor(_mixbox_z);
|
||||||
|
|
||||||
|
float _mixbox_x0 = mod(_mixbox_iz, 8.0) * 64.0;
|
||||||
|
float _mixbox_y0 = floor(_mixbox_iz / 8.0) * 64.0;
|
||||||
|
|
||||||
|
float _mixbox_x1 = mod(_mixbox_iz + 1.0, 8.0) * 64.0;
|
||||||
|
float _mixbox_y1 = floor((_mixbox_iz + 1.0) / 8.0) * 64.0;
|
||||||
|
|
||||||
|
vec2 _mixbox_uv0 = vec2(_mixbox_x0 + _mixbox_x + 0.5, _mixbox_y0 + _mixbox_y + 0.5) / 512.0;
|
||||||
|
vec2 _mixbox_uv1 = vec2(_mixbox_x1 + _mixbox_x + 0.5, _mixbox_y1 + _mixbox_y + 0.5) / 512.0;
|
||||||
|
|
||||||
|
vec3 _mixbox_c = mix(textureLod(mixbox_lut, _mixbox_uv0, 0.0).rgb, textureLod(mixbox_lut, _mixbox_uv1, 0.0).rgb, _mixbox_z - _mixbox_iz);
|
||||||
|
|
||||||
|
return mat3(_mixbox_c, _mixbox_rgb - _mixbox_eval_polynomial(_mixbox_c), vec3(0.0));
|
||||||
|
}
|
||||||
|
|
||||||
|
vec3 mixbox_latent_to_rgb(mat3 _mixbox_latent) {
|
||||||
|
return clamp(_mixbox_eval_polynomial(_mixbox_latent[0]) + _mixbox_latent[1], 0.0, 1.0);
|
||||||
|
}
|
||||||
|
|
||||||
|
vec4 mixbox_lerp(vec4 _mixbox_color1, vec4 _mixbox_color2, float _mixbox_t) {
|
||||||
|
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));
|
||||||
|
}
|
||||||
|
|
||||||
|
void fragment() {
|
||||||
|
COLOR = mixbox_lerp(color1, color2, UV.x);
|
||||||
|
}
|
||||||
110
godot/addons/mixbox/mixbox.gdshaderinc
Normal file
110
godot/addons/mixbox/mixbox.gdshaderinc
Normal file
@@ -0,0 +1,110 @@
|
|||||||
|
// ==========================================================
|
||||||
|
// MIXBOX 2.0 (c) 2022 Secret Weapons. All rights reserved.
|
||||||
|
// License: Creative Commons Attribution-NonCommercial 4.0
|
||||||
|
// Authors: Sarka Sochorova and Ondrej Jamriska
|
||||||
|
// ==========================================================
|
||||||
|
//
|
||||||
|
// BASIC USAGE
|
||||||
|
//
|
||||||
|
// vec3 rgb = mixbox_lerp(rgb1, rgb2, t);
|
||||||
|
//
|
||||||
|
// MULTI-COLOR MIXING
|
||||||
|
//
|
||||||
|
// mat3 z1 = mixbox_rgb_to_latent(rgb1);
|
||||||
|
// mat3 z2 = mixbox_rgb_to_latent(rgb2);
|
||||||
|
// mat3 z3 = mixbox_rgb_to_latent(rgb3);
|
||||||
|
//
|
||||||
|
// // mix 30% of rgb1, 60% of rgb2, and 10% of rgb3
|
||||||
|
// mat3 z_mix = 0.3*z1 + 0.6*z2 + 0.1*z3;
|
||||||
|
//
|
||||||
|
// vec3 rgb_mix = mixbox_latent_to_rgb(z_mix);
|
||||||
|
//
|
||||||
|
// PIGMENT COLORS
|
||||||
|
//
|
||||||
|
// Cadmium Yellow 0.996, 0.925, 0.000
|
||||||
|
// Hansa Yellow 0.988, 0.827, 0.000
|
||||||
|
// Cadmium Orange 1.000, 0.412, 0.000
|
||||||
|
// Cadmium Red 1.000, 0.153, 0.008
|
||||||
|
// Quinacridone Magenta 0.502, 0.008, 0.180
|
||||||
|
// Cobalt Violet 0.306, 0.000, 0.259
|
||||||
|
// Ultramarine Blue 0.098, 0.000, 0.349
|
||||||
|
// Cobalt Blue 0.000, 0.129, 0.522
|
||||||
|
// Phthalo Blue 0.051, 0.106, 0.267
|
||||||
|
// Phthalo Green 0.000, 0.235, 0.196
|
||||||
|
// Permanent Green 0.027, 0.427, 0.086
|
||||||
|
// Sap Green 0.420, 0.580, 0.016
|
||||||
|
// Burnt Sienna 0.482, 0.282, 0.000
|
||||||
|
//
|
||||||
|
// LICENSING
|
||||||
|
//
|
||||||
|
// If you want to obtain commercial license, please
|
||||||
|
// contact us at: mixbox@scrtwpns.com
|
||||||
|
//
|
||||||
|
|
||||||
|
vec3 _mixbox_eval_polynomial(vec3 _mixbox_c) {
|
||||||
|
float _mixbox_c0 = _mixbox_c[0];
|
||||||
|
float _mixbox_c1 = _mixbox_c[1];
|
||||||
|
float _mixbox_c2 = _mixbox_c[2];
|
||||||
|
float _mixbox_c3 = 1.0 - (_mixbox_c0 + _mixbox_c1 + _mixbox_c2);
|
||||||
|
|
||||||
|
float _mixbox_c00 = _mixbox_c0 * _mixbox_c0;
|
||||||
|
float _mixbox_c11 = _mixbox_c1 * _mixbox_c1;
|
||||||
|
float _mixbox_c22 = _mixbox_c2 * _mixbox_c2;
|
||||||
|
float _mixbox_c01 = _mixbox_c0 * _mixbox_c1;
|
||||||
|
float _mixbox_c02 = _mixbox_c0 * _mixbox_c2;
|
||||||
|
float _mixbox_c12 = _mixbox_c1 * _mixbox_c2;
|
||||||
|
float _mixbox_c33 = _mixbox_c3 * _mixbox_c3;
|
||||||
|
|
||||||
|
return (
|
||||||
|
(_mixbox_c0 * _mixbox_c00) * vec3(+0.07717053, +0.02826978, +0.24832992) +
|
||||||
|
(_mixbox_c1 * _mixbox_c11) * vec3(+0.95912302, +0.80256528, +0.03561839) +
|
||||||
|
(_mixbox_c2 * _mixbox_c22) * vec3(+0.74683774, +0.04868586, +0.00000000) +
|
||||||
|
(_mixbox_c3 * _mixbox_c33) * vec3(+0.99518138, +0.99978149, +0.99704802) +
|
||||||
|
(_mixbox_c00 * _mixbox_c1) * vec3(+0.04819146, +0.83363781, +0.32515377) +
|
||||||
|
(_mixbox_c01 * _mixbox_c1) * vec3(-0.68146950, +1.46107803, +1.06980936) +
|
||||||
|
(_mixbox_c00 * _mixbox_c2) * vec3(+0.27058419, -0.15324870, +1.98735057) +
|
||||||
|
(_mixbox_c02 * _mixbox_c2) * vec3(+0.80478189, +0.67093710, +0.18424500) +
|
||||||
|
(_mixbox_c00 * _mixbox_c3) * vec3(-0.35031003, +1.37855826, +3.68865000) +
|
||||||
|
(_mixbox_c0 * _mixbox_c33) * vec3(+1.05128046, +1.97815239, +2.82989073) +
|
||||||
|
(_mixbox_c11 * _mixbox_c2) * vec3(+3.21607125, +0.81270228, +1.03384539) +
|
||||||
|
(_mixbox_c1 * _mixbox_c22) * vec3(+2.78893374, +0.41565549, -0.04487295) +
|
||||||
|
(_mixbox_c11 * _mixbox_c3) * vec3(+3.02162577, +2.55374103, +0.32766114) +
|
||||||
|
(_mixbox_c1 * _mixbox_c33) * vec3(+2.95124691, +2.81201112, +1.17578442) +
|
||||||
|
(_mixbox_c22 * _mixbox_c3) * vec3(+2.82677043, +0.79933038, +1.81715262) +
|
||||||
|
(_mixbox_c2 * _mixbox_c33) * vec3(+2.99691099, +1.22593053, +1.80653661) +
|
||||||
|
(_mixbox_c01 * _mixbox_c2) * vec3(+1.87394106, +2.05027182, -0.29835996) +
|
||||||
|
(_mixbox_c01 * _mixbox_c3) * vec3(+2.56609566, +7.03428198, +0.62575374) +
|
||||||
|
(_mixbox_c02 * _mixbox_c3) * vec3(+4.08329484, -1.40408358, +2.14995522) +
|
||||||
|
(_mixbox_c12 * _mixbox_c3) * vec3(+6.00078678, +2.55552042, +1.90739502));
|
||||||
|
}
|
||||||
|
|
||||||
|
mat3 mixbox_rgb_to_latent(vec3 _mixbox_rgb) {
|
||||||
|
_mixbox_rgb = clamp(_mixbox_rgb, 0.0, 1.0);
|
||||||
|
|
||||||
|
float _mixbox_x = _mixbox_rgb.r * 63.0;
|
||||||
|
float _mixbox_y = _mixbox_rgb.g * 63.0;
|
||||||
|
float _mixbox_z = _mixbox_rgb.b * 63.0;
|
||||||
|
|
||||||
|
float _mixbox_iz = floor(_mixbox_z);
|
||||||
|
|
||||||
|
float _mixbox_x0 = mod(_mixbox_iz, 8.0) * 64.0;
|
||||||
|
float _mixbox_y0 = floor(_mixbox_iz / 8.0) * 64.0;
|
||||||
|
|
||||||
|
float _mixbox_x1 = mod(_mixbox_iz + 1.0, 8.0) * 64.0;
|
||||||
|
float _mixbox_y1 = floor((_mixbox_iz + 1.0) / 8.0) * 64.0;
|
||||||
|
|
||||||
|
vec2 _mixbox_uv0 = vec2(_mixbox_x0 + _mixbox_x + 0.5, _mixbox_y0 + _mixbox_y + 0.5) / 512.0;
|
||||||
|
vec2 _mixbox_uv1 = vec2(_mixbox_x1 + _mixbox_x + 0.5, _mixbox_y1 + _mixbox_y + 0.5) / 512.0;
|
||||||
|
|
||||||
|
vec3 _mixbox_c = mix(textureLod(mixbox_lut, _mixbox_uv0, 0.0).rgb, textureLod(mixbox_lut, _mixbox_uv1, 0.0).rgb, _mixbox_z - _mixbox_iz);
|
||||||
|
|
||||||
|
return mat3(_mixbox_c, _mixbox_rgb - _mixbox_eval_polynomial(_mixbox_c), vec3(0.0));
|
||||||
|
}
|
||||||
|
|
||||||
|
vec3 mixbox_latent_to_rgb(mat3 _mixbox_latent) {
|
||||||
|
return clamp(_mixbox_eval_polynomial(_mixbox_latent[0]) + _mixbox_latent[1], 0.0, 1.0);
|
||||||
|
}
|
||||||
|
|
||||||
|
vec4 mixbox_lerp(vec4 _mixbox_color1, vec4 _mixbox_color2, float _mixbox_t) {
|
||||||
|
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));
|
||||||
|
}
|
||||||
BIN
godot/addons/mixbox/mixbox.res
Normal file
BIN
godot/addons/mixbox/mixbox.res
Normal file
Binary file not shown.
163
godot/addons/mixbox/mixbox_lerp_node.gd
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godot/addons/mixbox/mixbox_lerp_node.gd
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# ==========================================================
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# MIXBOX 2.0 (c) 2022 Secret Weapons. All rights reserved.
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# License: Creative Commons Attribution-NonCommercial 4.0
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# Authors: Sarka Sochorova and Ondrej Jamriska
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# ==========================================================
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#
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# USAGE
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#
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# VisualShader: Add Node... > Mixbox > MixboxLerp
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#
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# Inspector:
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# Drag file "res://addons/mixbox/mixbox_lut.png"
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# to "Material > Shader Param > Mixbox Lut" slot.
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#
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# PIGMENT COLORS
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#
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# Cadmium Yellow 0.996, 0.925, 0.000
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# Hansa Yellow 0.988, 0.827, 0.000
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# Cadmium Orange 1.000, 0.412, 0.000
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# Cadmium Red 1.000, 0.153, 0.008
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# Quinacridone Magenta 0.502, 0.008, 0.180
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# Cobalt Violet 0.306, 0.000, 0.259
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# Ultramarine Blue 0.098, 0.000, 0.349
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# Cobalt Blue 0.000, 0.129, 0.522
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# Phthalo Blue 0.051, 0.106, 0.267
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# Phthalo Green 0.000, 0.235, 0.196
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# Permanent Green 0.027, 0.427, 0.086
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# Sap Green 0.420, 0.580, 0.016
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# Burnt Sienna 0.482, 0.282, 0.000
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#
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# LICENSING
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#
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# If you want to obtain commercial license, please
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# contact us at: mixbox@scrtwpns.com
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#
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tool
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extends VisualShaderNodeCustom
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class_name VisualShaderNodeMixboxLerp
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func _init():
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set_input_port_default_value(0, Vector3(0.0, 0.129, 0.522))
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set_input_port_default_value(1, Vector3(0.988, 0.827, 0.0))
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set_input_port_default_value(2, 0.5)
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func _get_name():
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return "MixboxLerp"
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func _get_category():
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return "Mixbox"
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func _get_description():
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return "Mixbox"
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func _get_return_icon_type():
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return VisualShaderNode.PORT_TYPE_VECTOR
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func _get_input_port_count():
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return 3
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func _get_input_port_name(port):
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match port:
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0:
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return "a"
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1:
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return "b"
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2:
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return "t"
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func _get_input_port_type(port):
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match port:
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0:
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return VisualShaderNode.PORT_TYPE_VECTOR
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1:
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return VisualShaderNode.PORT_TYPE_VECTOR
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2:
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return VisualShaderNode.PORT_TYPE_SCALAR
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func _get_output_port_count():
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return 1
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func _get_output_port_name(port):
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return "result"
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func _get_output_port_type(port):
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return VisualShaderNode.PORT_TYPE_VECTOR
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func _get_global_code(mode):
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return """
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uniform sampler2D mixbox_lut;
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vec3 _mixbox_eval_polynomial(vec3 _mixbox_c) {
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float _mixbox_c0 = _mixbox_c[0];
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float _mixbox_c1 = _mixbox_c[1];
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float _mixbox_c2 = _mixbox_c[2];
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float _mixbox_c3 = 1.0 - (_mixbox_c0 + _mixbox_c1 + _mixbox_c2);
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float _mixbox_c00 = _mixbox_c0 * _mixbox_c0;
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float _mixbox_c11 = _mixbox_c1 * _mixbox_c1;
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float _mixbox_c22 = _mixbox_c2 * _mixbox_c2;
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float _mixbox_c01 = _mixbox_c0 * _mixbox_c1;
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float _mixbox_c02 = _mixbox_c0 * _mixbox_c2;
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float _mixbox_c12 = _mixbox_c1 * _mixbox_c2;
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float _mixbox_c33 = _mixbox_c3 * _mixbox_c3;
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return (
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(_mixbox_c0 * _mixbox_c00) * vec3(+0.07717053, +0.02826978, +0.24832992) +
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(_mixbox_c1 * _mixbox_c11) * vec3(+0.95912302, +0.80256528, +0.03561839) +
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(_mixbox_c2 * _mixbox_c22) * vec3(+0.74683774, +0.04868586, +0.00000000) +
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(_mixbox_c3 * _mixbox_c33) * vec3(+0.99518138, +0.99978149, +0.99704802) +
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(_mixbox_c00 * _mixbox_c1) * vec3(+0.04819146, +0.83363781, +0.32515377) +
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(_mixbox_c01 * _mixbox_c1) * vec3(-0.68146950, +1.46107803, +1.06980936) +
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(_mixbox_c00 * _mixbox_c2) * vec3(+0.27058419, -0.15324870, +1.98735057) +
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(_mixbox_c02 * _mixbox_c2) * vec3(+0.80478189, +0.67093710, +0.18424500) +
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(_mixbox_c00 * _mixbox_c3) * vec3(-0.35031003, +1.37855826, +3.68865000) +
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(_mixbox_c0 * _mixbox_c33) * vec3(+1.05128046, +1.97815239, +2.82989073) +
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(_mixbox_c11 * _mixbox_c2) * vec3(+3.21607125, +0.81270228, +1.03384539) +
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(_mixbox_c1 * _mixbox_c22) * vec3(+2.78893374, +0.41565549, -0.04487295) +
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(_mixbox_c11 * _mixbox_c3) * vec3(+3.02162577, +2.55374103, +0.32766114) +
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(_mixbox_c1 * _mixbox_c33) * vec3(+2.95124691, +2.81201112, +1.17578442) +
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(_mixbox_c22 * _mixbox_c3) * vec3(+2.82677043, +0.79933038, +1.81715262) +
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(_mixbox_c2 * _mixbox_c33) * vec3(+2.99691099, +1.22593053, +1.80653661) +
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(_mixbox_c01 * _mixbox_c2) * vec3(+1.87394106, +2.05027182, -0.29835996) +
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(_mixbox_c01 * _mixbox_c3) * vec3(+2.56609566, +7.03428198, +0.62575374) +
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(_mixbox_c02 * _mixbox_c3) * vec3(+4.08329484, -1.40408358, +2.14995522) +
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(_mixbox_c12 * _mixbox_c3) * vec3(+6.00078678, +2.55552042, +1.90739502));
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}
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mat3 _mixbox_rgb_to_latent(vec3 _mixbox_rgb) {
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_mixbox_rgb = clamp(_mixbox_rgb, 0.0, 1.0);
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float _mixbox_x = _mixbox_rgb.r * 63.0;
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float _mixbox_y = _mixbox_rgb.g * 63.0;
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float _mixbox_z = _mixbox_rgb.b * 63.0;
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float _mixbox_iz = floor(_mixbox_z);
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float _mixbox_x0 = mod(_mixbox_iz, 8.0) * 64.0;
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float _mixbox_y0 = floor(_mixbox_iz / 8.0) * 64.0;
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float _mixbox_x1 = mod(_mixbox_iz + 1.0, 8.0) * 64.0;
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float _mixbox_y1 = floor((_mixbox_iz + 1.0) / 8.0) * 64.0;
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vec2 _mixbox_uv0 = vec2(_mixbox_x0 + _mixbox_x + 0.5, _mixbox_y0 + _mixbox_y + 0.5) / 512.0;
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vec2 _mixbox_uv1 = vec2(_mixbox_x1 + _mixbox_x + 0.5, _mixbox_y1 + _mixbox_y + 0.5) / 512.0;
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vec3 _mixbox_c = mix(textureLod(mixbox_lut, _mixbox_uv0, 0.0).rgb, textureLod(mixbox_lut, _mixbox_uv1, 0.0).rgb, _mixbox_z - _mixbox_iz);
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return mat3(_mixbox_c, _mixbox_rgb - _mixbox_eval_polynomial(_mixbox_c), vec3(0.0));
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}
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vec3 _mixbox_latent_to_rgb(mat3 _mixbox_latent) {
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return clamp(_mixbox_eval_polynomial(_mixbox_latent[0]) + _mixbox_latent[1], 0.0, 1.0);
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}
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vec3 _mixbox_lerp(vec3 _mixbox_color1, vec3 _mixbox_color2, float _mixbox_t) {
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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));
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}
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"""
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func _get_code(input_vars, output_vars, mode, type):
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return output_vars[0] + " = _mixbox_lerp(%s, %s, %s);" % [input_vars[0], input_vars[1], input_vars[2]]
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BIN
godot/addons/mixbox/mixbox_lut.png
Normal file
BIN
godot/addons/mixbox/mixbox_lut.png
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Binary file not shown.
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After Width: | Height: | Size: 173 KiB |
35
godot/addons/mixbox/mixbox_lut.png.import
Normal file
35
godot/addons/mixbox/mixbox_lut.png.import
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[remap]
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importer="texture"
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type="StreamTexture"
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path="res://.import/mixbox_lut.png-d8cb77d0d5322618f1648925da003780.stex"
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metadata={
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"vram_texture": false
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}
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[deps]
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source_file="res://addons/mixbox/mixbox_lut.png"
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dest_files=[ "res://.import/mixbox_lut.png-d8cb77d0d5322618f1648925da003780.stex" ]
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[params]
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compress/mode=3
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compress/lossy_quality=0.7
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compress/hdr_mode=0
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compress/bptc_ldr=0
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compress/normal_map=0
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flags/repeat=0
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flags/filter=true
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flags/mipmaps=false
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flags/anisotropic=false
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flags/srgb=2
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process/fix_alpha_border=false
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process/premult_alpha=false
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process/HDR_as_SRGB=false
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process/invert_color=false
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process/normal_map_invert_y=false
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stream=false
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size_limit=0
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detect_3d=false
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svg/scale=1.0
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Reference in New Issue
Block a user