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356 行
16 KiB
356 行
16 KiB
using System;
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using UnityEngine;
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using UnityEngine.Rendering;
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namespace UnityEditor.Experimental.Rendering.HDPipeline
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{
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// A Material can be authored from the shader graph or by hand. When written by hand we need to provide an inspector.
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// Such a Material will share some properties between it various variant (shader graph variant or hand authored variant).
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// This is the purpose of BaseLitGUI. It contain all properties that are common to all Material based on Lit template.
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// For the default hand written Lit material see LitUI.cs that contain specific properties for our default implementation.
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public abstract class BaseUnlitGUI : ShaderGUI
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{
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protected static class StylesBaseUnlit
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{
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public static string optionText = "Surface options";
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public static string surfaceTypeText = "Surface Type";
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public static string blendModeText = "Blend Mode";
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public static readonly string[] surfaceTypeNames = Enum.GetNames(typeof(SurfaceType));
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public static readonly string[] blendModeNames = Enum.GetNames(typeof(BlendMode));
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public static GUIContent alphaCutoffEnableText = new GUIContent("Alpha Cutoff Enable", "Threshold for alpha cutoff");
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public static GUIContent alphaCutoffText = new GUIContent("Alpha Cutoff", "Threshold for alpha cutoff");
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public static GUIContent doubleSidedEnableText = new GUIContent("Double Sided", "This will render the two face of the objects (disable backface culling) and flip/mirror normal");
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public static GUIContent distortionEnableText = new GUIContent("Distortion", "Enable distortion on this shader");
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public static GUIContent distortionOnlyText = new GUIContent("Distortion Only", "This shader will only be use to render distortion");
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public static GUIContent distortionDepthTestText = new GUIContent("Distortion Depth Test", "Enable the depth test for distortion");
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public static string advancedText = "Advanced Options";
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}
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public enum SurfaceType
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{
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Opaque,
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Transparent
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}
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public enum BlendMode
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{
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Lerp,
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Add,
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SoftAdd,
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Multiply,
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Premultiply
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}
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protected MaterialEditor m_MaterialEditor;
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// Properties
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protected MaterialProperty surfaceType = null;
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protected const string kSurfaceType = "_SurfaceType";
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protected MaterialProperty alphaCutoffEnable = null;
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protected const string kAlphaCutoffEnabled = "_AlphaCutoffEnable";
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protected MaterialProperty alphaCutoff = null;
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protected const string kAlphaCutoff = "_AlphaCutoff";
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protected MaterialProperty doubleSidedEnable = null;
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protected const string kDoubleSidedEnable = "_DoubleSidedEnable";
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protected MaterialProperty blendMode = null;
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protected const string kBlendMode = "_BlendMode";
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protected MaterialProperty distortionEnable = null;
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protected const string kDistortionEnable = "_DistortionEnable";
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protected MaterialProperty distortionOnly = null;
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protected const string kDistortionOnly = "_DistortionOnly";
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protected MaterialProperty distortionDepthTest = null;
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protected const string kDistortionDepthTest = "_DistortionDepthTest";
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// See comment in LitProperties.hlsl
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const string kEmissionColor = "_EmissionColor";
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// The following set of functions are call by the ShaderGraph
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// It will allow to display our common parameters + setup keyword correctly for them
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protected abstract void FindMaterialProperties(MaterialProperty[] props);
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protected abstract void SetupMaterialKeywordsAndPassInternal(Material material);
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protected abstract void MaterialPropertiesGUI(Material material);
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protected abstract void VertexAnimationPropertiesGUI();
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// This function will say if emissive is used or not regarding enlighten/PVR
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protected abstract bool ShouldEmissionBeEnabled(Material material);
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protected virtual void FindBaseMaterialProperties(MaterialProperty[] props)
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{
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surfaceType = FindProperty(kSurfaceType, props);
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alphaCutoffEnable = FindProperty(kAlphaCutoffEnabled, props);
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alphaCutoff = FindProperty(kAlphaCutoff, props);
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doubleSidedEnable = FindProperty(kDoubleSidedEnable, props);
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blendMode = FindProperty(kBlendMode, props);
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distortionEnable = FindProperty(kDistortionEnable, props, false);
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distortionOnly = FindProperty(kDistortionOnly, props, false);
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distortionDepthTest = FindProperty(kDistortionDepthTest, props, false);
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}
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void SurfaceTypePopup()
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{
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EditorGUI.showMixedValue = surfaceType.hasMixedValue;
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var mode = (SurfaceType)surfaceType.floatValue;
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EditorGUI.BeginChangeCheck();
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mode = (SurfaceType)EditorGUILayout.Popup(StylesBaseUnlit.surfaceTypeText, (int)mode, StylesBaseUnlit.surfaceTypeNames);
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if (EditorGUI.EndChangeCheck())
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{
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m_MaterialEditor.RegisterPropertyChangeUndo("Surface Type");
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surfaceType.floatValue = (float)mode;
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}
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EditorGUI.showMixedValue = false;
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}
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private void BlendModePopup()
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{
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EditorGUI.showMixedValue = blendMode.hasMixedValue;
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var mode = (BlendMode)blendMode.floatValue;
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EditorGUI.BeginChangeCheck();
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mode = (BlendMode)EditorGUILayout.Popup(StylesBaseUnlit.blendModeText, (int)mode, StylesBaseUnlit.blendModeNames);
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if (EditorGUI.EndChangeCheck())
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{
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m_MaterialEditor.RegisterPropertyChangeUndo("Blend Mode");
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blendMode.floatValue = (float)mode;
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}
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EditorGUI.showMixedValue = false;
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}
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protected virtual void BaseMaterialPropertiesGUI()
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{
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EditorGUILayout.LabelField(StylesBaseUnlit.optionText, EditorStyles.boldLabel);
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EditorGUI.indentLevel++;
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SurfaceTypePopup();
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if ((SurfaceType)surfaceType.floatValue == SurfaceType.Transparent)
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{
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BlendModePopup();
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if (distortionEnable != null)
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{
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m_MaterialEditor.ShaderProperty(distortionEnable, StylesBaseUnlit.distortionEnableText);
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if (distortionEnable.floatValue == 1.0f)
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{
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m_MaterialEditor.ShaderProperty(distortionOnly, StylesBaseUnlit.distortionOnlyText);
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m_MaterialEditor.ShaderProperty(distortionDepthTest, StylesBaseUnlit.distortionDepthTestText);
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}
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}
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}
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m_MaterialEditor.ShaderProperty(alphaCutoffEnable, StylesBaseUnlit.alphaCutoffEnableText);
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if (alphaCutoffEnable.floatValue == 1.0f)
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{
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m_MaterialEditor.ShaderProperty(alphaCutoff, StylesBaseUnlit.alphaCutoffText);
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}
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// This function must finish with double sided option (see LitUI.cs)
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m_MaterialEditor.ShaderProperty(doubleSidedEnable, StylesBaseUnlit.doubleSidedEnableText);
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EditorGUI.indentLevel--;
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}
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static public void SetKeyword(Material m, string keyword, bool state)
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{
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if (state)
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m.EnableKeyword(keyword);
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else
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m.DisableKeyword(keyword);
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}
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// All Setup Keyword functions must be static. It allow to create script to automatically update the shaders with a script if ocde change
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static public void SetupBaseUnlitKeywords(Material material)
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{
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bool alphaTestEnable = material.GetFloat(kAlphaCutoffEnabled) > 0.0f;
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SurfaceType surfaceType = (SurfaceType)material.GetFloat(kSurfaceType);
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BlendMode blendMode = (BlendMode)material.GetFloat(kBlendMode);
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if (surfaceType == SurfaceType.Opaque)
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{
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material.SetOverrideTag("RenderType", alphaTestEnable ? "TransparentCutout" : "");
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material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.One);
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material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.Zero);
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material.SetInt("_ZWrite", 1);
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material.renderQueue = alphaTestEnable ? (int)UnityEngine.Rendering.RenderQueue.AlphaTest : -1;
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}
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else
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{
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material.SetOverrideTag("RenderType", "Transparent");
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material.SetInt("_ZWrite", 0);
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material.renderQueue = (int)UnityEngine.Rendering.RenderQueue.Transparent;
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switch (blendMode)
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{
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case BlendMode.Lerp:
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material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.SrcAlpha);
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material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.OneMinusSrcAlpha);
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break;
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case BlendMode.Add:
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material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.One);
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material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.One);
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break;
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case BlendMode.SoftAdd:
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material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.OneMinusDstColor);
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material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.One);
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break;
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case BlendMode.Multiply:
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material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.DstColor);
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material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.Zero);
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break;
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case BlendMode.Premultiply:
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material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.One);
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material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.OneMinusSrcAlpha);
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break;
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}
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}
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bool doubleSidedEnable = material.GetFloat(kDoubleSidedEnable) > 0.0f;
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if (doubleSidedEnable)
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{
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material.SetInt("_CullMode", (int)UnityEngine.Rendering.CullMode.Off);
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}
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else
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{
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material.SetInt("_CullMode", (int)UnityEngine.Rendering.CullMode.Back);
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}
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SetKeyword(material, "_DOUBLESIDED_ON", doubleSidedEnable);
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SetKeyword(material, "_ALPHATEST_ON", alphaTestEnable);
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if (material.HasProperty(kDistortionEnable))
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{
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bool distortionEnable = material.GetFloat(kDistortionEnable) > 0.0f;
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if (distortionEnable)
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{
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material.SetShaderPassEnabled("DistortionVectors", true);
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}
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else
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{
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material.SetShaderPassEnabled("DistortionVectors", false);
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}
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bool distortionDepthTest = material.GetFloat(kDistortionDepthTest) > 0.0f;
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if (distortionDepthTest)
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{
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material.SetInt("_ZTestMode", (int)UnityEngine.Rendering.CompareFunction.LessEqual);
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}
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else
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{
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material.SetInt("_ZTestMode", (int)UnityEngine.Rendering.CompareFunction.Always);
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}
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SetKeyword(material, "_DISTORTION_ON", distortionEnable);
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}
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// A material's GI flag internally keeps track of whether emission is enabled at all, it's enabled but has no effect
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// or is enabled and may be modified at runtime. This state depends on the values of the current flag and emissive color.
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// The fixup routine makes sure that the material is in the correct state if/when changes are made to the mode or color.
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MaterialEditor.FixupEmissiveFlag(material);
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}
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static public void SetupBaseUnlitMaterialPass(Material material)
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{
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if (material.HasProperty(kDistortionEnable))
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{
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bool distortionEnable = material.GetFloat(kDistortionEnable) > 0.0f;
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bool distortionOnly = material.GetFloat(kDistortionOnly) > 0.0f;
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if (distortionEnable && distortionOnly)
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{
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// Disable all passes except debug material
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material.SetShaderPassEnabled("GBuffer", false);
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material.SetShaderPassEnabled("DebugViewMaterial", true);
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material.SetShaderPassEnabled("Meta", false);
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material.SetShaderPassEnabled("ShadowCaster", false);
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material.SetShaderPassEnabled("DepthOnly", false);
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material.SetShaderPassEnabled("MotionVectors", false);
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material.SetShaderPassEnabled("Forward", false);
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}
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else
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{
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material.SetShaderPassEnabled("GBuffer", true);
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material.SetShaderPassEnabled("DebugViewMaterial", true);
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material.SetShaderPassEnabled("Meta", true);
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material.SetShaderPassEnabled("ShadowCaster", true);
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material.SetShaderPassEnabled("DepthOnly", true);
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material.SetShaderPassEnabled("MotionVectors", true);
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material.SetShaderPassEnabled("Forward", true);
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}
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}
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}
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// Dedicated to emissive - for emissive Enlighten/PVR
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protected void DoEmissionArea(Material material)
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{
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// Emission for GI?
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if (ShouldEmissionBeEnabled(material))
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{
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if (m_MaterialEditor.EmissionEnabledProperty())
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{
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// change the GI flag and fix it up with emissive as black if necessary
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m_MaterialEditor.LightmapEmissionFlagsProperty(MaterialEditor.kMiniTextureFieldLabelIndentLevel, true);
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}
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}
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}
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public void ShaderPropertiesGUI(Material material)
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{
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// Use default labelWidth
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EditorGUIUtility.labelWidth = 0f;
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// Detect any changes to the material
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EditorGUI.BeginChangeCheck();
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{
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//EditorGUI.indentLevel++;
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BaseMaterialPropertiesGUI();
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EditorGUILayout.Space();
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VertexAnimationPropertiesGUI();
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EditorGUILayout.Space();
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MaterialPropertiesGUI(material);
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DoEmissionArea(material);
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EditorGUILayout.Space();
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EditorGUILayout.LabelField(StylesBaseUnlit.advancedText, EditorStyles.boldLabel);
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// NB renderqueue editor is not shown on purpose: we want to override it based on blend mode
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EditorGUI.indentLevel++;
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m_MaterialEditor.EnableInstancingField();
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m_MaterialEditor.DoubleSidedGIField();
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EditorGUI.indentLevel--;
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}
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if (EditorGUI.EndChangeCheck())
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{
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foreach (var obj in m_MaterialEditor.targets)
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SetupMaterialKeywordsAndPassInternal((Material)obj);
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}
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}
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// This is call by the inspector
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public override void OnGUI(MaterialEditor materialEditor, MaterialProperty[] props)
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{
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m_MaterialEditor = materialEditor;
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// We should always do this call at the beginning
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m_MaterialEditor.serializedObject.Update();
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// MaterialProperties can be animated so we do not cache them but fetch them every event to ensure animated values are updated correctly
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FindBaseMaterialProperties(props);
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FindMaterialProperties(props);
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Material material = materialEditor.target as Material;
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ShaderPropertiesGUI(material);
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// We should always do this call at the end
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m_MaterialEditor.serializedObject.ApplyModifiedProperties();
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}
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}
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}
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