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adamgrahamadamgraham
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Add UIGradient shader
1 parent 71e0ec8 commit 80cceb4

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+375
-0
lines changed

Diff for: ‎Editor.meta

+8
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Diff for: ‎Editor/UIGradientShaderGUI.cs

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using System;
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using System.Linq;
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using UnityEditor;
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using UnityEngine;
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namespace Zigurous.UI.Editor
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{
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public sealed class UIGradientShaderGUI : ShaderGUI
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{
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public override void OnGUI(MaterialEditor materialEditor, MaterialProperty[] properties)
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{
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EditorGUILayout.Space();
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Material material = materialEditor.target as Material;
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if (material == null) {
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throw new ArgumentNullException(nameof(material));
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}
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GradientColorKey[] colorKeys = Enumerable
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.Range(0, material.GetInt("_Colors"))
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.Select((s, t) => new GradientColorKey(material.GetColor($"_Color{t}"), material.GetFloat($"_ColorTime{t}")))
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.ToArray();
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GradientAlphaKey[] alphaKeys = Enumerable
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.Range(0, material.GetInt("_Alphas"))
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.Select((s, t) => new GradientAlphaKey(material.GetFloat($"_Alpha{t}"), material.GetFloat($"_AlphaTime{t}")))
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.ToArray();
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Gradient gradient = new Gradient();
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gradient.SetKeys(colorKeys, alphaKeys);
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EditorGUI.BeginChangeCheck();
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Gradient field = EditorGUILayout.GradientField("Gradient", gradient);
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if (!EditorGUI.EndChangeCheck())
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{
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base.OnGUI(materialEditor, properties);
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return;
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}
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for (int i = 0; i < 8; i++)
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{
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material.SetColor($"_Color{i}", Color.magenta);
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material.SetFloat($"_ColorTime{i}", -1f);
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material.SetFloat($"_Alpha{i}", -1f);
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material.SetFloat($"_AlphaTime{i}", -1f);
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}
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for (int i = 0; i < field.colorKeys.Length; i++)
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{
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material.SetColor($"_Color{i}", field.colorKeys[i].color);
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material.SetFloat($"_ColorTime{i}", field.colorKeys[i].time);
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}
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for (int i = 0; i < field.alphaKeys.Length; i++)
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{
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material.SetFloat($"_Alpha{i}", field.alphaKeys[i].alpha);
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material.SetFloat($"_AlphaTime{i}", field.alphaKeys[i].time);
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}
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material.SetInt("_Colors", field.colorKeys.Length);
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material.SetInt("_Alphas", field.alphaKeys.Length);
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EditorUtility.SetDirty(material);
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base.OnGUI(materialEditor, properties);
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}
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}
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}

Diff for: ‎Editor/UIGradientShaderGUI.cs.meta

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Diff for: ‎Editor/Zigurous.UI.Editor.asmdef

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{
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"name": "Zigurous.UI.Editor",
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"references": [
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"Zigurous.UI"
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],
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"includePlatforms": [
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"Editor"
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],
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"excludePlatforms": [],
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"allowUnsafeCode": false,
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"overrideReferences": false,
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"precompiledReferences": [],
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"autoReferenced": true,
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"defineConstraints": [],
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"versionDefines": [],
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"noEngineReferences": false
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}

Diff for: ‎Editor/Zigurous.UI.Editor.asmdef.meta

+7
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Diff for: ‎Shaders.meta

+8
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Diff for: ‎Shaders/UIGradient.shader

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Shader "Zigurous/UI/Gradient"
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{
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Properties
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{
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[PerRendererData] _MainTex ("Sprite Texture", 2D) = "white" {}
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[HideInInspector] _Color ("Tint", Color) = (1,1,1,1)
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[HideInInspector] _StencilComp ("Stencil Comparison", Float) = 8
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[HideInInspector] _Stencil ("Stencil ID", Float) = 0
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[HideInInspector] _StencilOp ("Stencil Operation", Float) = 0
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[HideInInspector] _StencilWriteMask ("Stencil Write Mask", Float) = 255
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[HideInInspector] _StencilReadMask ("Stencil Read Mask", Float) = 255
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[HideInInspector] _ColorMask ("Color Mask", Float) = 15
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_Rotation ("Rotation", Range(0, 180)) = 0
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[Toggle(UNITY_UI_ALPHACLIP)] _UseUIAlphaClip ("Use Alpha Clip", Float) = 0
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[HideInInspector] _Color0 ("Color 0", Color) = (1, 1, 1, 1)
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[HideInInspector] _Color1 ("Color 1", Color) = (1, 1, 1, 1)
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[HideInInspector] _Color2 ("Color 2", Color) = (1, 1, 1, 1)
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[HideInInspector] _Color3 ("Color 3", Color) = (1, 1, 1, 1)
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[HideInInspector] _Color4 ("Color 4", Color) = (1, 1, 1, 1)
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[HideInInspector] _Color5 ("Color 5", Color) = (1, 1, 1, 1)
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[HideInInspector] _Color6 ("Color 6", Color) = (1, 1, 1, 1)
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[HideInInspector] _Color7 ("Color 7", Color) = (1, 1, 1, 1)
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[HideInInspector] _ColorTime0 ("Color Time 0", Float) = 0
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[HideInInspector] _ColorTime1 ("Color Time 1", Float) = 0
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[HideInInspector] _ColorTime2 ("Color Time 2", Float) = 0
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[HideInInspector] _ColorTime3 ("Color Time 3", Float) = 0
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[HideInInspector] _ColorTime4 ("Color Time 4", Float) = 0
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[HideInInspector] _ColorTime5 ("Color Time 5", Float) = 0
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[HideInInspector] _ColorTime6 ("Color Time 6", Float) = 0
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[HideInInspector] _ColorTime7 ("Color Time 7", Float) = 0
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[HideInInspector] _Colors ("Colors", Int) = 0
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[HideInInspector] _Alpha0 ("Alpha 0", Float) = 0
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[HideInInspector] _Alpha1 ("Alpha 1", Float) = 0
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[HideInInspector] _Alpha2 ("Alpha 2", Float) = 0
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[HideInInspector] _Alpha3 ("Alpha 3", Float) = 0
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[HideInInspector] _Alpha4 ("Alpha 4", Float) = 0
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[HideInInspector] _Alpha5 ("Alpha 5", Float) = 0
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[HideInInspector] _Alpha6 ("Alpha 6", Float) = 0
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[HideInInspector] _Alpha7 ("Alpha 7", Float) = 0
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[HideInInspector] _AlphaTime0 ("Alpha Time 0", Float) = 0
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[HideInInspector] _AlphaTime1 ("Alpha Time 1", Float) = 0
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[HideInInspector] _AlphaTime2 ("Alpha Time 2", Float) = 0
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[HideInInspector] _AlphaTime3 ("Alpha Time 3", Float) = 0
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[HideInInspector] _AlphaTime4 ("Alpha Time 4", Float) = 0
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[HideInInspector] _AlphaTime5 ("Alpha Time 5", Float) = 0
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[HideInInspector] _AlphaTime6 ("Alpha Time 6", Float) = 0
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[HideInInspector] _AlphaTime7 ("Alpha Time 7", Float) = 0
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[HideInInspector] _Alphas ("Alphas", Int) = 0
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}
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SubShader
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{
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Tags
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{
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"Queue"="Transparent"
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"IgnoreProjector"="True"
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"RenderType"="Transparent"
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"PreviewType"="Plane"
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"CanUseSpriteAtlas"="True"
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}
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Stencil
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{
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Ref [_Stencil]
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Comp [_StencilComp]
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Pass [_StencilOp]
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ReadMask [_StencilReadMask]
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WriteMask [_StencilWriteMask]
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}
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Cull Off
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Lighting Off
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ZWrite Off
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ZTest [unity_GUIZTestMode]
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Blend SrcAlpha OneMinusSrcAlpha
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ColorMask [_ColorMask]
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Pass
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{
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Name "Default"
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CGPROGRAM
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#pragma vertex vert
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#pragma fragment frag
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#pragma target 2.0
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#include "UnityCG.cginc"
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#include "UnityUI.cginc"
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#pragma multi_compile_local _ UNITY_UI_CLIP_RECT
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#pragma multi_compile_local _ UNITY_UI_ALPHACLIP
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struct appdata_t
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{
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float4 vertex : POSITION;
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float4 color : COLOR;
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float2 texcoord : TEXCOORD0;
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UNITY_VERTEX_INPUT_INSTANCE_ID
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};
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struct v2f
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{
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float4 vertex : SV_POSITION;
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fixed4 color : COLOR;
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float2 texcoord : TEXCOORD0;
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float4 worldPosition : TEXCOORD1;
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UNITY_VERTEX_OUTPUT_STEREO
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};
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sampler2D _MainTex;
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fixed4 _Color;
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fixed4 _TextureSampleAdd;
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float4 _ClipRect;
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float4 _MainTex_ST;
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float _Rotation;
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float4 _Color0, _Color1, _Color2, _Color3, _Color4, _Color5, _Color6, _Color7;
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float _Alpha0, _Alpha1, _Alpha2, _Alpha3, _Alpha4, _Alpha5, _Alpha6, _Alpha7;
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float _ColorTime0, _ColorTime1, _ColorTime2, _ColorTime3, _ColorTime4, _ColorTime5, _ColorTime6, _ColorTime7;
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float _AlphaTime0, _AlphaTime1, _AlphaTime2, _AlphaTime3, _AlphaTime4, _AlphaTime5, _AlphaTime6, _AlphaTime7;
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int _Colors, _Alphas;
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float4 get_gradient (float2 texcoord)
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{
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float4 cc[8] = { _Color0, _Color1, _Color2, _Color3, _Color4, _Color5, _Color6, _Color7 };
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float aa[8] = { _Alpha0, _Alpha1, _Alpha2, _Alpha3, _Alpha4, _Alpha5, _Alpha6, _Alpha7 };
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float ct[8] = { _ColorTime0, _ColorTime1, _ColorTime2, _ColorTime3, _ColorTime4, _ColorTime5, _ColorTime6, _ColorTime7 };
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float at[8] = { _AlphaTime0, _AlphaTime1, _AlphaTime2, _AlphaTime3, _AlphaTime4, _AlphaTime5, _AlphaTime6, _AlphaTime7 };
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float4 cv1 = cc[0], cv2 = cc[_Colors - 1];
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float ct1 = ct[0], ct2 = ct[_Colors - 1];
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float av1 = aa[0], av2 = aa[_Alphas - 1];
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float at1 = at[0], at2 = at[_Alphas - 1];
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float t = texcoord.x;
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for (int i = 0; i < _Colors; i++)
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{
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if (ct[i] > t)
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break;
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cv1 = cc[i];
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ct1 = ct[i];
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}
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for (int j = 0; j < _Colors; j++)
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{
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if (ct[j] < t)
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continue;
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cv2 = cc[j];
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ct2 = ct[j];
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break;
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}
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for (int k = 0; k < _Alphas; k++)
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{
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if (at[k] > t)
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break;
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av1 = aa[k];
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at1 = at[k];
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}
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for (int l = 0; l < _Alphas; l++)
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{
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if (at[l] < t)
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continue;
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av2 = aa[l];
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at2 = at[l];
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break;
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}
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float lerpA = (t - at1) / (at2 - at1);
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float lerpC = (t - ct1) / (ct2 - ct1);
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float4 finalC = lerp(cv1, cv2, lerpC);
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float4 finalA = lerp(av1, av2, lerpA);
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finalC.a = finalA;
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return finalC;
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}
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v2f vert (appdata_t v)
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{
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v2f OUT;
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UNITY_SETUP_INSTANCE_ID(v);
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UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(OUT);
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OUT.worldPosition = v.vertex;
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OUT.vertex = UnityObjectToClipPos(OUT.worldPosition);
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OUT.texcoord = TRANSFORM_TEX(v.texcoord, _MainTex);
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OUT.color = v.color * _Color;
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const float Deg2Rad = (UNITY_PI * 2.0) / 360.0;
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float rotationRadians = _Rotation * Deg2Rad;
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float s = sin(rotationRadians);
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float c = cos(rotationRadians);
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float2x2 rotationMatrix = float2x2(c, -s, s, c);
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OUT.texcoord.xy = mul(v.texcoord.xy, rotationMatrix);
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return OUT;
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}
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fixed4 frag (v2f IN) : SV_Target
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{
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half4 color = (tex2D(_MainTex, IN.texcoord) + _TextureSampleAdd) * IN.color;
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#ifdef UNITY_UI_CLIP_RECT
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color.a *= UnityGet2DClipping(IN.worldPosition.xy, _ClipRect);
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#endif
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#ifdef UNITY_UI_ALPHACLIP
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clip (color.a - 0.001);
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#endif
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float2 texcoord = (IN.texcoord - _MainTex_ST.zw) / _MainTex_ST.xy;
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float4 gradient = get_gradient(texcoord);
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return color * gradient;
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}
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ENDCG
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}
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}
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CustomEditor "Zigurous.UI.Editor.UIGradientShaderGUI"
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}

Diff for: ‎Shaders/UIGradient.shader.meta

+9
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