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453 行
19 KiB
453 行
19 KiB
using System;
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using Unity.UIWidgets.painting;
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using UnityEngine;
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using UnityEngine.Rendering;
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namespace Unity.UIWidgets.ui {
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static class MaterialProps {
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static readonly int _srcBlend = Shader.PropertyToID("_SrcBlend");
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static readonly int _dstBlend = Shader.PropertyToID("_DstBlend");
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static readonly int _stencilComp = Shader.PropertyToID("_StencilComp");
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public static void set(Material mat, BlendMode op) {
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if (op == BlendMode.srcOver) {
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mat.SetInt(_srcBlend, (int) UnityEngine.Rendering.BlendMode.One);
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mat.SetInt(_dstBlend, (int) UnityEngine.Rendering.BlendMode.OneMinusSrcAlpha);
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} else if (op == BlendMode.srcIn) {
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mat.SetInt(_srcBlend, (int) UnityEngine.Rendering.BlendMode.DstAlpha);
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mat.SetInt(_dstBlend, (int) UnityEngine.Rendering.BlendMode.Zero);
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} else if (op == BlendMode.srcOut) {
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mat.SetInt(_srcBlend, (int) UnityEngine.Rendering.BlendMode.OneMinusDstAlpha);
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mat.SetInt(_dstBlend, (int) UnityEngine.Rendering.BlendMode.Zero);
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} else if (op == BlendMode.srcATop) {
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mat.SetInt(_srcBlend, (int) UnityEngine.Rendering.BlendMode.DstAlpha);
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mat.SetInt(_dstBlend, (int) UnityEngine.Rendering.BlendMode.OneMinusSrcAlpha);
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} else if (op == BlendMode.dstOver) {
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mat.SetInt(_srcBlend, (int) UnityEngine.Rendering.BlendMode.OneMinusDstAlpha);
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mat.SetInt(_dstBlend, (int) UnityEngine.Rendering.BlendMode.One);
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} else if (op == BlendMode.dstIn) {
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mat.SetInt(_srcBlend, (int) UnityEngine.Rendering.BlendMode.Zero);
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mat.SetInt(_dstBlend, (int) UnityEngine.Rendering.BlendMode.SrcAlpha);
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} else if (op == BlendMode.dstOut) {
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mat.SetInt(_srcBlend, (int) UnityEngine.Rendering.BlendMode.Zero);
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mat.SetInt(_dstBlend, (int) UnityEngine.Rendering.BlendMode.OneMinusSrcAlpha);
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} else if (op == BlendMode.dstATop) {
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mat.SetInt(_srcBlend, (int) UnityEngine.Rendering.BlendMode.OneMinusDstAlpha);
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mat.SetInt(_dstBlend, (int) UnityEngine.Rendering.BlendMode.SrcAlpha);
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} else if (op == BlendMode.plus) {
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mat.SetInt(_srcBlend, (int) UnityEngine.Rendering.BlendMode.One);
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mat.SetInt(_dstBlend, (int) UnityEngine.Rendering.BlendMode.One);
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} else if (op == BlendMode.src) {
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mat.SetInt(_srcBlend, (int) UnityEngine.Rendering.BlendMode.One);
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mat.SetInt(_dstBlend, (int) UnityEngine.Rendering.BlendMode.Zero);
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} else if (op == BlendMode.dst) {
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mat.SetInt(_srcBlend, (int) UnityEngine.Rendering.BlendMode.Zero);
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mat.SetInt(_dstBlend, (int) UnityEngine.Rendering.BlendMode.One);
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} else if (op == BlendMode.xor) {
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mat.SetInt(_srcBlend, (int) UnityEngine.Rendering.BlendMode.OneMinusDstAlpha);
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mat.SetInt(_dstBlend, (int) UnityEngine.Rendering.BlendMode.OneMinusSrcAlpha);
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} else if (op == BlendMode.clear) {
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mat.SetInt(_srcBlend, (int) UnityEngine.Rendering.BlendMode.Zero);
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mat.SetInt(_dstBlend, (int) UnityEngine.Rendering.BlendMode.Zero);
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} else {
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Debug.LogWarning("Not supported BlendMode: " + op + ". Defaults to srcOver");
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mat.SetInt(_srcBlend, (int) UnityEngine.Rendering.BlendMode.One);
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mat.SetInt(_dstBlend, (int) UnityEngine.Rendering.BlendMode.OneMinusSrcAlpha);
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}
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}
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public static void set(Material mat, CompareFunction op) {
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mat.SetFloat(_stencilComp, (int) op);
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}
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}
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class MaterialByBlendMode {
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public MaterialByBlendMode(Shader shader) {
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this._shader = shader;
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}
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readonly Shader _shader;
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readonly Material[] _materials = new Material[30];
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public Material getMaterial(BlendMode op) {
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var key = (int) op;
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var mat = this._materials[key];
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if (mat) {
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return mat;
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}
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mat = new Material(this._shader) {hideFlags = HideFlags.HideAndDontSave};
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MaterialProps.set(mat, op);
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this._materials[key] = mat;
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return mat;
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}
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}
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class MaterialByStencilComp {
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public MaterialByStencilComp(Shader shader) {
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this._shader = shader;
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}
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readonly Shader _shader;
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readonly Material[] _materials = new Material[2];
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public Material getMaterial(bool ignoreClip) {
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var key = ignoreClip ? 1 : 0;
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var mat = this._materials[key];
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if (mat) {
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return mat;
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}
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mat = new Material(this._shader) {hideFlags = HideFlags.HideAndDontSave};
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MaterialProps.set(mat, ignoreClip ? CompareFunction.Always : CompareFunction.Equal);
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this._materials[key] = mat;
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return mat;
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}
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}
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class MaterialByBlendModeStencilComp {
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public MaterialByBlendModeStencilComp(Shader shader) {
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this._shader = shader;
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}
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readonly Shader _shader;
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readonly Material[] _materials = new Material[30 * 2];
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public Material getMaterial(BlendMode blend, bool ignoreClip) {
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var key = (int) blend * 2 + (ignoreClip ? 1 : 0);
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var mat = this._materials[key];
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if (mat) {
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return mat;
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}
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mat = new Material(this._shader) {hideFlags = HideFlags.HideAndDontSave};
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MaterialProps.set(mat, blend);
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MaterialProps.set(mat, ignoreClip ? CompareFunction.Always : CompareFunction.Equal);
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this._materials[key] = mat;
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return mat;
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}
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}
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static class CanvasShader {
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static readonly MaterialByBlendModeStencilComp _convexFillMat;
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static readonly MaterialByStencilComp _fill0Mat;
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static readonly MaterialByBlendMode _fill1Mat;
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static readonly MaterialByBlendModeStencilComp _stroke0Mat;
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static readonly Material _stroke1Mat;
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static readonly MaterialByBlendModeStencilComp _texMat;
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static readonly Material _stencilMat;
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static readonly Material _filterMat;
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static CanvasShader() {
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var convexFillShader = Shader.Find("UIWidgets/canvas_convexFill");
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if (convexFillShader == null) {
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throw new Exception("UIWidgets/canvas_convexFill not found");
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}
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var fill0Shader = Shader.Find("UIWidgets/canvas_fill0");
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if (fill0Shader == null) {
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throw new Exception("UIWidgets/canvas_fill0 not found");
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}
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var fill1Shader = Shader.Find("UIWidgets/canvas_fill1");
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if (fill1Shader == null) {
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throw new Exception("UIWidgets/canvas_fill1 not found");
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}
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var stroke0Shader = Shader.Find("UIWidgets/canvas_stroke0");
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if (stroke0Shader == null) {
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throw new Exception("UIWidgets/canvas_stroke0 not found");
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}
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var stroke1Shader = Shader.Find("UIWidgets/canvas_stroke1");
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if (stroke1Shader == null) {
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throw new Exception("UIWidgets/canvas_stroke1 not found");
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}
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var texShader = Shader.Find("UIWidgets/canvas_tex");
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if (texShader == null) {
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throw new Exception("UIWidgets/canvas_tex not found");
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}
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var stencilShader = Shader.Find("UIWidgets/canvas_stencil");
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if (stencilShader == null) {
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throw new Exception("UIWidgets/canvas_stencil not found");
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}
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var filterShader = Shader.Find("UIWidgets/canvas_filter");
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if (filterShader == null) {
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throw new Exception("UIWidgets/canvas_filter not found");
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}
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_convexFillMat = new MaterialByBlendModeStencilComp(convexFillShader);
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_fill0Mat = new MaterialByStencilComp(fill0Shader);
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_fill1Mat = new MaterialByBlendMode(fill1Shader);
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_stroke0Mat = new MaterialByBlendModeStencilComp(stroke0Shader);
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_stroke1Mat = new Material(stroke1Shader) {hideFlags = HideFlags.HideAndDontSave};
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_texMat = new MaterialByBlendModeStencilComp(texShader);
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_stencilMat = new Material(stencilShader) {hideFlags = HideFlags.HideAndDontSave};
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_filterMat = new Material(filterShader) {hideFlags = HideFlags.HideAndDontSave};
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}
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static Vector4 _colorToVector4(Color c) {
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return new Vector4(
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c.red / 255f,
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c.green / 255f,
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c.blue / 255f,
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c.alpha / 255f
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);
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}
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static void _getShaderPassAndProps(Vector4 viewport, Matrix3 ctm, Paint paint, float alpha,
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out int pass, out MaterialPropertyBlock props) {
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props = new MaterialPropertyBlock();
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props.SetVector("_viewport", viewport);
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props.SetFloat("_alpha", alpha);
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switch (paint.shader) {
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case null:
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pass = 0;
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props.SetVector("_color", _colorToVector4(paint.color));
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return;
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case _LinearGradient linear:
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pass = 1;
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props.SetMatrix("_shaderMat", linear.getGradientMat(ctm).toMatrix4x4());
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props.SetTexture("_shaderTex", linear.gradientTex.texture);
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props.SetVector("_leftColor", _colorToVector4(linear.leftColor));
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props.SetVector("_rightColor", _colorToVector4(linear.rightColor));
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props.SetInt("_tileMode", (int) linear.tileMode);
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return;
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case _RadialGradient radial:
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pass = 2;
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props.SetMatrix("_shaderMat", radial.getGradientMat(ctm).toMatrix4x4());
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props.SetTexture("_shaderTex", radial.gradientTex.texture);
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props.SetVector("_leftColor", _colorToVector4(radial.leftColor));
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props.SetVector("_rightColor", _colorToVector4(radial.rightColor));
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props.SetInt("_tileMode", (int) radial.tileMode);
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return;
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case _SweepGradient sweep:
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pass = 3;
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props.SetMatrix("_shaderMat", sweep.getGradientMat(ctm).toMatrix4x4());
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props.SetTexture("_shaderTex", sweep.gradientTex.texture);
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props.SetVector("_leftColor", _colorToVector4(sweep.leftColor));
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props.SetVector("_rightColor", _colorToVector4(sweep.rightColor));
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props.SetInt("_tileMode", (int) sweep.tileMode);
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props.SetFloat("_bias", (float) sweep.bias);
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props.SetFloat("_scale", (float) sweep.scale);
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return;
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case ImageShader image:
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pass = 4;
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props.SetMatrix("_shaderMat", image.getShaderMat(ctm).toMatrix4x4());
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props.SetTexture("_shaderTex", image.image.texture);
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props.SetInt("_tileMode", (int) image.tileMode);
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return;
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default:
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throw new Exception("Unknown paint.shader: " + paint.shader);
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}
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}
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public static CommandBufferCanvas.RenderDraw convexFill(CommandBufferCanvas.RenderLayer layer, Paint paint,
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MeshMesh mesh) {
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Vector4 viewport = layer.viewport;
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Matrix3 ctm = layer.states[layer.states.Count - 1].matrix;
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var mat = _convexFillMat.getMaterial(paint.blendMode, layer.ignoreClip);
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_getShaderPassAndProps(viewport, ctm, paint, 1.0f, out var pass, out var props);
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return new CommandBufferCanvas.RenderDraw {
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mesh = mesh,
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pass = pass,
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material = mat,
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properties = props,
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};
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}
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public static CommandBufferCanvas.RenderDraw fill0(CommandBufferCanvas.RenderLayer layer, MeshMesh mesh) {
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Vector4 viewport = layer.viewport;
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var mat = _fill0Mat.getMaterial(layer.ignoreClip);
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var pass = 0;
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var props = new MaterialPropertyBlock();
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props.SetVector("_viewport", viewport);
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return new CommandBufferCanvas.RenderDraw {
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mesh = mesh,
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pass = pass,
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material = mat,
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properties = props,
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};
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}
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public static CommandBufferCanvas.RenderDraw fill1(CommandBufferCanvas.RenderLayer layer, Paint paint,
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MeshMesh mesh) {
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Vector4 viewport = layer.viewport;
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Matrix3 ctm = layer.states[layer.states.Count - 1].matrix;
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var mat = _fill1Mat.getMaterial(paint.blendMode);
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_getShaderPassAndProps(viewport, ctm, paint, 1.0f, out var pass, out var props);
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return new CommandBufferCanvas.RenderDraw {
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mesh = mesh.boundsMesh,
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pass = pass,
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material = mat,
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properties = props,
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};
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}
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public static CommandBufferCanvas.RenderDraw stroke0(CommandBufferCanvas.RenderLayer layer, Paint paint,
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float alpha, MeshMesh mesh) {
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Vector4 viewport = layer.viewport;
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Matrix3 ctm = layer.states[layer.states.Count - 1].matrix;
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var mat = _stroke0Mat.getMaterial(paint.blendMode, layer.ignoreClip);
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_getShaderPassAndProps(viewport, ctm, paint, alpha, out var pass, out var props);
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return new CommandBufferCanvas.RenderDraw {
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mesh = mesh,
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pass = pass,
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material = mat,
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properties = props,
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};
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}
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public static CommandBufferCanvas.RenderDraw stroke1(CommandBufferCanvas.RenderLayer layer, MeshMesh mesh) {
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Vector4 viewport = layer.viewport;
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var mat = _stroke1Mat;
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var pass = 0;
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var props = new MaterialPropertyBlock();
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props.SetVector("_viewport", viewport);
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return new CommandBufferCanvas.RenderDraw {
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mesh = mesh,
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pass = pass,
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material = mat,
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properties = props,
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};
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}
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public static CommandBufferCanvas.RenderDraw stencilClear(
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CommandBufferCanvas.RenderLayer layer, MeshMesh mesh) {
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Vector4 viewport = layer.viewport;
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var mat = _stencilMat;
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var pass = 0;
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var props = new MaterialPropertyBlock();
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props.SetVector("_viewport", viewport);
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return new CommandBufferCanvas.RenderDraw {
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mesh = mesh,
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pass = pass,
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material = mat,
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properties = props,
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};
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}
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public static CommandBufferCanvas.RenderDraw stencil0(CommandBufferCanvas.RenderLayer layer, MeshMesh mesh) {
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Vector4 viewport = layer.viewport;
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var mat = _stencilMat;
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var pass = 1;
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var props = new MaterialPropertyBlock();
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props.SetVector("_viewport", viewport);
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return new CommandBufferCanvas.RenderDraw {
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mesh = mesh,
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pass = pass,
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material = mat,
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properties = props,
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};
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}
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public static CommandBufferCanvas.RenderDraw stencil1(CommandBufferCanvas.RenderLayer layer, MeshMesh mesh) {
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Vector4 viewport = layer.viewport;
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var mat = _stencilMat;
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var pass = 2;
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var props = new MaterialPropertyBlock();
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props.SetVector("_viewport", viewport);
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return new CommandBufferCanvas.RenderDraw {
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mesh = mesh,
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pass = pass,
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material = mat,
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properties = props,
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};
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}
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public static CommandBufferCanvas.RenderDraw tex(CommandBufferCanvas.RenderLayer layer, Paint paint,
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MeshMesh mesh, Image image) {
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Vector4 viewport = layer.viewport;
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Matrix3 ctm = layer.states[layer.states.Count - 1].matrix;
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var mat = _texMat.getMaterial(paint.blendMode, layer.ignoreClip);
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_getShaderPassAndProps(viewport, ctm, paint, 1.0f, out var pass, out var props);
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props.SetTexture("_tex", image.texture);
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props.SetInt("_texMode", image.texture is RenderTexture ? 1 : 0); // pre alpha if RT else post alpha
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return new CommandBufferCanvas.RenderDraw {
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mesh = mesh,
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pass = pass,
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material = mat,
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properties = props,
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image = image, // keep a reference to avoid GC.
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};
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}
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public static CommandBufferCanvas.RenderDraw texRT(CommandBufferCanvas.RenderLayer layer, Paint paint,
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MeshMesh mesh, CommandBufferCanvas.RenderLayer renderLayer) {
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Vector4 viewport = layer.viewport;
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Matrix3 ctm = layer.states[layer.states.Count - 1].matrix;
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var mat = _texMat.getMaterial(paint.blendMode, layer.ignoreClip);
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_getShaderPassAndProps(viewport, ctm, paint, 1.0f, out var pass, out var props);
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props.SetInt("_texMode", 1); // pre alpha
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return new CommandBufferCanvas.RenderDraw {
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mesh = mesh,
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pass = pass,
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material = mat,
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properties = props,
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layer = renderLayer,
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};
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}
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public static CommandBufferCanvas.RenderDraw texAlpha(CommandBufferCanvas.RenderLayer layer, Paint paint,
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MeshMesh mesh, Texture tex) {
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Vector4 viewport = layer.viewport;
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Matrix3 ctm = layer.states[layer.states.Count - 1].matrix;
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var mat = _texMat.getMaterial(paint.blendMode, layer.ignoreClip);
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_getShaderPassAndProps(viewport, ctm, paint, 1.0f, out var pass, out var props);
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props.SetTexture("_tex", tex);
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props.SetInt("_texMode", 2); // alpha only
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return new CommandBufferCanvas.RenderDraw {
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mesh = mesh,
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pass = pass,
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material = mat,
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properties = props,
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};
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}
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public static CommandBufferCanvas.RenderDraw maskFilter(CommandBufferCanvas.RenderLayer layer, MeshMesh mesh,
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CommandBufferCanvas.RenderLayer renderLayer, float radius, Vector2 imgInc, float[] kernel) {
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Vector4 viewport = layer.viewport;
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var mat = _filterMat;
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var pass = 0;
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var props = new MaterialPropertyBlock();
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props.SetVector("_viewport", viewport);
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props.SetFloat("_mf_radius", radius);
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props.SetVector("_mf_imgInc", imgInc);
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props.SetFloatArray("_mf_kernel", kernel);
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return new CommandBufferCanvas.RenderDraw {
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mesh = mesh,
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pass = pass,
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material = mat,
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properties = props,
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layer = renderLayer,
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};
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}
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}
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}
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