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255 行
12 KiB
255 行
12 KiB
using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.Experimental.Rendering;
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using UnityEngine.Experimental.Rendering.HDPipeline;
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namespace UnityEditor.Experimental.Rendering.HDPipeline
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{
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[CustomEditor(typeof(SubsurfaceScatteringSettings))]
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public sealed partial class SubsurfaceScatteringSettingsEditor : HDBaseEditor<SubsurfaceScatteringSettings>
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{
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sealed class Profile
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{
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internal SerializedProperty self;
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internal SubsurfaceScatteringProfile objReference;
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internal SerializedProperty name;
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internal SerializedProperty scatteringDistance;
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internal SerializedProperty transmissionTint;
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internal SerializedProperty texturingMode;
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internal SerializedProperty transmissionMode;
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internal SerializedProperty thicknessRemap;
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internal SerializedProperty worldScale;
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internal SerializedProperty fresnel0;
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// Old SSS Model >>>
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internal SerializedProperty scatterDistance1;
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internal SerializedProperty scatterDistance2;
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internal SerializedProperty lerpWeight;
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// <<< Old SSS Model
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// Render preview
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internal RenderTexture profileRT;
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internal RenderTexture transmittanceRT;
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internal Profile()
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{
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profileRT = new RenderTexture(256, 256, 0, RenderTextureFormat.DefaultHDR);
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transmittanceRT = new RenderTexture( 16, 256, 0, RenderTextureFormat.DefaultHDR);
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}
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internal void Release()
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{
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CoreUtils.Destroy(profileRT);
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CoreUtils.Destroy(transmittanceRT);
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}
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}
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SerializedProperty m_UseDisneySSS;
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List<Profile> m_Profiles;
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Material m_ProfileMaterial;
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Material m_TransmittanceMaterial;
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protected override void OnEnable()
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{
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base.OnEnable();
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// These shaders don't need to be reference by RenderPipelineResource as they are not use at runtime
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m_ProfileMaterial = CoreUtils.CreateEngineMaterial("Hidden/HDRenderPipeline/DrawSssProfile");
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m_TransmittanceMaterial = CoreUtils.CreateEngineMaterial("Hidden/HDRenderPipeline/DrawTransmittanceGraph");
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int count = SssConstants.SSS_N_PROFILES - 1;
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m_Profiles = new List<Profile>();
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m_UseDisneySSS = properties.Find(x => x.useDisneySSS);
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var serializedProfiles = properties.Find(x => x.profiles);
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for (int i = 0; i < count; i++)
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{
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var serializedProfile = serializedProfiles.GetArrayElementAtIndex(i);
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var rp = new RelativePropertyFetcher<SubsurfaceScatteringProfile>(serializedProfile);
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var profile = new Profile
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{
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self = serializedProfile,
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objReference = m_Target.profiles[i],
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name = rp.Find(x => x.name),
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scatteringDistance = rp.Find(x => x.scatteringDistance),
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transmissionTint = rp.Find(x => x.transmissionTint),
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texturingMode = rp.Find(x => x.texturingMode),
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transmissionMode = rp.Find(x => x.transmissionMode),
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thicknessRemap = rp.Find(x => x.thicknessRemap),
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worldScale = rp.Find(x => x.worldScale),
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fresnel0 = rp.Find(x => x.fresnel0),
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scatterDistance1 = rp.Find(x => x.scatterDistance1),
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scatterDistance2 = rp.Find(x => x.scatterDistance2),
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lerpWeight = rp.Find(x => x.lerpWeight)
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};
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m_Profiles.Add(profile);
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}
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}
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void OnDisable()
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{
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CoreUtils.Destroy(m_ProfileMaterial);
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CoreUtils.Destroy(m_TransmittanceMaterial);
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foreach (var profile in m_Profiles)
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profile.Release();
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m_Profiles = null;
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}
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public override void OnInspectorGUI()
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{
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CheckStyles();
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// Display a warning if this settings asset is not currently in use
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if (m_HDPipeline == null || m_HDPipeline.sssSettings != m_Target)
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EditorGUILayout.HelpBox("These profiles aren't currently in use, assign this asset to the HD render pipeline asset to use them.", MessageType.Warning);
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serializedObject.Update();
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EditorGUILayout.PropertyField(m_UseDisneySSS, s_Styles.useDisneySSS);
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EditorGUILayout.Space();
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if (m_Profiles == null || m_Profiles.Count == 0)
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return;
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bool useDisneySSS = m_UseDisneySSS.boolValue;
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for (int i = 0; i < m_Profiles.Count; i++)
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{
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var profile = m_Profiles[i];
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CoreEditorUtils.DrawSplitter();
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bool state = profile.self.isExpanded;
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state = CoreEditorUtils.DrawHeaderFoldout(profile.name.stringValue, state);
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if (state)
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{
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EditorGUI.indentLevel++;
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EditorGUILayout.PropertyField(profile.name);
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using (var scope = new EditorGUI.ChangeCheckScope())
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{
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if (useDisneySSS)
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{
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EditorGUILayout.PropertyField(profile.scatteringDistance, s_Styles.profileScatteringDistance);
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using (new EditorGUI.DisabledScope(true))
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EditorGUILayout.FloatField(s_Styles.profileMaxRadius, profile.objReference.maxRadius);
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}
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else
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{
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EditorGUILayout.PropertyField(profile.scatterDistance1, s_Styles.profileScatterDistance1);
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EditorGUILayout.PropertyField(profile.scatterDistance2, s_Styles.profileScatterDistance2);
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EditorGUILayout.PropertyField(profile.lerpWeight, s_Styles.profileLerpWeight);
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}
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profile.texturingMode.intValue = EditorGUILayout.Popup(s_Styles.texturingMode, profile.texturingMode.intValue, s_Styles.texturingModeOptions);
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profile.transmissionMode.intValue = EditorGUILayout.Popup(s_Styles.profileTransmissionMode, profile.transmissionMode.intValue, s_Styles.transmissionModeOptions);
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EditorGUILayout.PropertyField(profile.transmissionTint, s_Styles.profileTransmissionTint);
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EditorGUILayout.PropertyField(profile.thicknessRemap, s_Styles.profileMinMaxThickness);
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var thicknessRemap = profile.thicknessRemap.vector2Value;
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EditorGUILayout.MinMaxSlider(s_Styles.profileThicknessRemap, ref thicknessRemap.x, ref thicknessRemap.y, 0f, 50f);
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profile.thicknessRemap.vector2Value = thicknessRemap;
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EditorGUILayout.PropertyField(profile.worldScale, s_Styles.profileWorldScale);
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EditorGUILayout.Slider(profile.fresnel0, 0.0f, 0.1f, s_Styles.profileFresnel0);
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EditorGUILayout.Space();
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EditorGUILayout.LabelField(s_Styles.profilePreview0, s_Styles.centeredMiniBoldLabel);
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EditorGUILayout.LabelField(s_Styles.profilePreview1, EditorStyles.centeredGreyMiniLabel);
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EditorGUILayout.LabelField(s_Styles.profilePreview2, EditorStyles.centeredGreyMiniLabel);
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EditorGUILayout.LabelField(s_Styles.profilePreview3, EditorStyles.centeredGreyMiniLabel);
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EditorGUILayout.Space();
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serializedObject.ApplyModifiedProperties();
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if (scope.changed)
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{
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// Validate and update the cache for this profile only
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profile.objReference.Validate();
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m_Target.UpdateCache(i);
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}
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}
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RenderPreview(profile, useDisneySSS);
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EditorGUILayout.Space();
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EditorGUI.indentLevel--;
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}
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profile.self.isExpanded = state;
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}
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CoreEditorUtils.DrawSplitter();
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serializedObject.ApplyModifiedProperties();
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}
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void RenderPreview(Profile profile, bool useDisneySSS)
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{
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var obj = profile.objReference;
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float r = obj.maxRadius;
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var S = obj.shapeParam;
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var T = (Vector4)profile.transmissionTint.colorValue;
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var R = profile.thicknessRemap.vector2Value;
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bool transmissionEnabled = profile.transmissionMode.intValue != (int)SubsurfaceScatteringProfile.TransmissionMode.None;
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m_ProfileMaterial.SetFloat(HDShaderIDs._MaxRadius, r);
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m_ProfileMaterial.SetVector(HDShaderIDs._ShapeParam, S);
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// Old SSS Model >>>
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CoreUtils.SelectKeyword(m_ProfileMaterial, "SSS_MODEL_DISNEY", "SSS_MODEL_BASIC", useDisneySSS);
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// Apply the three-sigma rule, and rescale.
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float s = (1f / 3f) * SssConstants.SSS_BASIC_DISTANCE_SCALE;
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var scatterDist1 = profile.scatterDistance1.colorValue;
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var scatterDist2 = profile.scatterDistance2.colorValue;
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float rMax = Mathf.Max(scatterDist1.r, scatterDist1.g, scatterDist1.b,
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scatterDist2.r, scatterDist2.g, scatterDist2.b);
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var stdDev1 = s * (Vector4)scatterDist1;
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var stdDev2 = s * (Vector4)scatterDist2;
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m_ProfileMaterial.SetVector(HDShaderIDs._StdDev1, stdDev1);
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m_ProfileMaterial.SetVector(HDShaderIDs._StdDev2, stdDev2);
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m_ProfileMaterial.SetFloat(HDShaderIDs._LerpWeight, profile.lerpWeight.floatValue);
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m_ProfileMaterial.SetFloat(HDShaderIDs._MaxRadius, rMax);
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// <<< Old SSS Model
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// Draw the profile.
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EditorGUI.DrawPreviewTexture(GUILayoutUtility.GetRect(256f, 256f), profile.profileRT, m_ProfileMaterial, ScaleMode.ScaleToFit, 1f);
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EditorGUILayout.Space();
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EditorGUILayout.LabelField(s_Styles.transmittancePreview0, s_Styles.centeredMiniBoldLabel);
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EditorGUILayout.LabelField(s_Styles.transmittancePreview1, EditorStyles.centeredGreyMiniLabel);
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EditorGUILayout.LabelField(s_Styles.transmittancePreview2, EditorStyles.centeredGreyMiniLabel);
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EditorGUILayout.Space();
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// Old SSS Model >>>
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// Multiply by 0.1 to convert from millimeters to centimeters. Apply the distance scale.
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float a = 0.1f * SssConstants.SSS_BASIC_DISTANCE_SCALE;
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var halfRcpVarianceAndWeight1 = new Vector4(a * a * 0.5f / (stdDev1.x * stdDev1.x), a * a * 0.5f / (stdDev1.y * stdDev1.y), a * a * 0.5f / (stdDev1.z * stdDev1.z), 4f * (1f - profile.lerpWeight.floatValue));
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var halfRcpVarianceAndWeight2 = new Vector4(a * a * 0.5f / (stdDev2.x * stdDev2.x), a * a * 0.5f / (stdDev2.y * stdDev2.y), a * a * 0.5f / (stdDev2.z * stdDev2.z), 4f * profile.lerpWeight.floatValue);
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m_TransmittanceMaterial.SetVector(HDShaderIDs._HalfRcpVarianceAndWeight1, halfRcpVarianceAndWeight1);
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m_TransmittanceMaterial.SetVector(HDShaderIDs._HalfRcpVarianceAndWeight2, halfRcpVarianceAndWeight2);
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// <<< Old SSS Model
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m_TransmittanceMaterial.SetVector(HDShaderIDs._ShapeParam, S);
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m_TransmittanceMaterial.SetVector(HDShaderIDs._TransmissionTint, transmissionEnabled ? T : Vector4.zero);
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m_TransmittanceMaterial.SetVector(HDShaderIDs._ThicknessRemap, R);
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// Draw the transmittance graph.
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EditorGUI.DrawPreviewTexture(GUILayoutUtility.GetRect(16f, 16f), profile.transmittanceRT, m_TransmittanceMaterial, ScaleMode.ScaleToFit, 16f);
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}
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}
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}
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