171 lines
9.0 KiB
C#
171 lines
9.0 KiB
C#
using System;
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using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.Rendering.HighDefinition;
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using UnityEngine.Rendering;
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using System.Linq;
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// Include material common properties names
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using static UnityEngine.Rendering.HighDefinition.HDMaterialProperties;
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namespace UnityEditor.Rendering.HighDefinition
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{
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/// <summary>
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/// The UI block that represents detail inputs for materials.
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/// </summary>
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public class DetailInputsUIBlock : MaterialUIBlock
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{
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/// <summary>Options for DetailInputsUIBlock features.</summary>
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[Flags]
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public enum Features
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{
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/// <summary>Displays the standard detail inputs UI.</summary>
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None = 0,
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/// <summary>Replaces the header by a sub-header. This is useful for layered material UI</summary>
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SubHeader = 1 << 1,
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/// <summary>Display the standard Detail Inputs UI.</summary>
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All = ~0 ^ SubHeader // By default we don't want to have a sub-header
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}
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internal class Styles
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{
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public const string header = "Detail Inputs";
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public static GUIContent UVDetailMappingText = new GUIContent("Detail UV Mapping", "");
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public static GUIContent detailMapNormalText = new GUIContent("Detail Map", "Specifies the Detail Map albedo (R) Normal map y-axis (G) Smoothness (B) Normal map x-axis (A) - Neutral value is (0.5, 0.5, 0.5, 0.5)");
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public static GUIContent detailAlbedoScaleText = new GUIContent("Detail Albedo Scale", "Controls the scale factor for the Detail Map's Albedo.");
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public static GUIContent detailNormalScaleText = new GUIContent("Detail Normal Scale", "Controls the scale factor for the Detail Map's Normal map.");
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public static GUIContent detailSmoothnessScaleText = new GUIContent("Detail Smoothness Scale", "Controls the scale factor for the Detail Map's Smoothness.");
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public static GUIContent linkDetailsWithBaseText = new GUIContent("Lock to Base Tiling/Offset", "When enabled, HDRP locks the Detail's Tiling/Offset values to the Base Tiling/Offset.");
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public static GUIContent perPixelDisplacementDetailsWarning = new GUIContent("For pixel displacement to work correctly, details and base map must use the same UV mapping.");
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}
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MaterialProperty[] UVDetail = new MaterialProperty[kMaxLayerCount];
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const string kUVDetail = "_UVDetail";
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MaterialProperty[] UVDetailsMappingMask = new MaterialProperty[kMaxLayerCount];
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const string kUVDetailsMappingMask = "_UVDetailsMappingMask";
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MaterialProperty[] detailMap = new MaterialProperty[kMaxLayerCount];
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const string kDetailMap = "_DetailMap";
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MaterialProperty[] linkDetailsWithBase = new MaterialProperty[kMaxLayerCount];
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const string kLinkDetailsWithBase = "_LinkDetailsWithBase";
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MaterialProperty[] detailAlbedoScale = new MaterialProperty[kMaxLayerCount];
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const string kDetailAlbedoScale = "_DetailAlbedoScale";
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MaterialProperty[] detailNormalScale = new MaterialProperty[kMaxLayerCount];
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const string kDetailNormalScale = "_DetailNormalScale";
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MaterialProperty[] detailSmoothnessScale = new MaterialProperty[kMaxLayerCount];
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const string kDetailSmoothnessScale = "_DetailSmoothnessScale";
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MaterialProperty[] UVBase = new MaterialProperty[kMaxLayerCount];
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const string kUVBase = "_UVBase";
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MaterialProperty displacementMode = null;
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const string kDisplacementMode = "_DisplacementMode";
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ExpandableBit m_ExpandableBit;
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Features m_Features;
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int m_LayerIndex;
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int m_LayerCount;
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Color m_DotColor;
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bool isLayeredLit => m_LayerCount > 1;
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/// <summary>
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/// Constructs a DetailInputsUIBlock base on the parameters.
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/// </summary>
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/// <param name="expandableBit">Bit index to store the foldout state.</param>
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/// <param name="layerCount">Number of layers in the shader.</param>
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/// <param name="layerIndex">Current layer index to display. 0 if it's not a layered shader</param>
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/// <param name="features">Features of the block.</param>
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/// <param name="dotColor">Subheader dot color. See Layered Lit UI subheader for more info.</param>
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public DetailInputsUIBlock(ExpandableBit expandableBit, int layerCount = 1, int layerIndex = 0, Features features = Features.All, Color dotColor = default(Color))
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{
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m_ExpandableBit = expandableBit;
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m_Features = features;
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m_LayerIndex = layerIndex;
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m_LayerCount = layerCount;
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m_DotColor = dotColor;
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}
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/// <summary>
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/// Loads the material properties for the block.
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/// </summary>
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public override void LoadMaterialProperties()
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{
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UVDetail = FindPropertyLayered(kUVDetail, m_LayerCount);
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UVDetailsMappingMask = FindPropertyLayered(kUVDetailsMappingMask, m_LayerCount);
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linkDetailsWithBase = FindPropertyLayered(kLinkDetailsWithBase, m_LayerCount);
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detailMap = FindPropertyLayered(kDetailMap, m_LayerCount);
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detailAlbedoScale = FindPropertyLayered(kDetailAlbedoScale, m_LayerCount);
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detailNormalScale = FindPropertyLayered(kDetailNormalScale, m_LayerCount);
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detailSmoothnessScale = FindPropertyLayered(kDetailSmoothnessScale, m_LayerCount);
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UVBase = FindPropertyLayered(kUVBase, m_LayerCount);
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displacementMode = FindProperty(kDisplacementMode);
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}
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/// <summary>
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/// Renders the properties in the block.
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/// </summary>
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public override void OnGUI()
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{
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bool subHeader = (m_Features & Features.SubHeader) != 0;
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using (var header = new MaterialHeaderScope(Styles.header, (uint)m_ExpandableBit, materialEditor, subHeader: subHeader, colorDot: m_DotColor))
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{
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if (header.expanded)
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DrawDetailsGUI();
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}
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}
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/// <summary>
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/// Draw the Details GUI.
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/// </summary>
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protected void DrawDetailsGUI()
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{
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UVBaseMapping uvBaseMapping = (UVBaseMapping)UVBase[m_LayerIndex].floatValue;
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float X, Y, Z, W;
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materialEditor.TexturePropertySingleLine(Styles.detailMapNormalText, detailMap[m_LayerIndex]);
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if (materials.All(m => m.GetTexture(isLayeredLit ? kDetailMap + m_LayerIndex : kDetailMap)))
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{
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EditorGUI.indentLevel++;
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// When Planar or Triplanar is enable the UVDetail use the same mode, so we disable the choice on UVDetail
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if (uvBaseMapping == UVBaseMapping.Planar)
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{
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EditorGUILayout.LabelField(Styles.UVDetailMappingText.text + ": Planar");
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}
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else if (uvBaseMapping == UVBaseMapping.Triplanar)
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{
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EditorGUILayout.LabelField(Styles.UVDetailMappingText.text + ": Triplanar");
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}
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else
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{
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materialEditor.ShaderProperty(UVDetail[m_LayerIndex], Styles.UVDetailMappingText);
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}
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// Setup the UVSet for detail, if planar/triplanar is use for base, it will override the mapping of detail (See shader code)
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X = ((UVDetailMapping)UVDetail[m_LayerIndex].floatValue == UVDetailMapping.UV0) ? 1.0f : 0.0f;
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Y = ((UVDetailMapping)UVDetail[m_LayerIndex].floatValue == UVDetailMapping.UV1) ? 1.0f : 0.0f;
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Z = ((UVDetailMapping)UVDetail[m_LayerIndex].floatValue == UVDetailMapping.UV2) ? 1.0f : 0.0f;
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W = ((UVDetailMapping)UVDetail[m_LayerIndex].floatValue == UVDetailMapping.UV3) ? 1.0f : 0.0f;
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UVDetailsMappingMask[m_LayerIndex].colorValue = new Color(X, Y, Z, W);
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EditorGUI.indentLevel++;
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materialEditor.ShaderProperty(linkDetailsWithBase[m_LayerIndex], Styles.linkDetailsWithBaseText);
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EditorGUI.indentLevel--;
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materialEditor.TextureScaleOffsetProperty(detailMap[m_LayerIndex]);
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if ((DisplacementMode)displacementMode.floatValue == DisplacementMode.Pixel && (UVDetail[m_LayerIndex].floatValue != UVBase[m_LayerIndex].floatValue))
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{
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if (materials.All(m => m.GetTexture(isLayeredLit ? kDetailMap + m_LayerIndex : kDetailMap)))
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EditorGUILayout.HelpBox(Styles.perPixelDisplacementDetailsWarning.text, MessageType.Warning);
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}
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materialEditor.ShaderProperty(detailAlbedoScale[m_LayerIndex], Styles.detailAlbedoScaleText);
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materialEditor.ShaderProperty(detailNormalScale[m_LayerIndex], Styles.detailNormalScaleText);
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materialEditor.ShaderProperty(detailSmoothnessScale[m_LayerIndex], Styles.detailSmoothnessScaleText);
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EditorGUI.indentLevel--;
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}
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}
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}
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}
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