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255 行
12 KiB

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