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124 行
3.9 KiB

using System;
using UnityEditor;
using UnityEngine;
using UnityEngine.Rendering;
namespace UnityEngine.Experimental.Rendering.HDPipeline
{
[ExecuteInEditMode]
public class DecalProjectorComponent : MonoBehaviour
{
public Material m_Material = null;
public float m_DrawDistance = 1000.0f;
public float m_FadeScale = 0.9f;
private Material m_OldMaterial = null;
private DecalSystem.DecalHandle m_Handle = null;
public DecalSystem.DecalHandle Handle
{
get
{
return this.m_Handle;
}
set
{
this.m_Handle = value;
}
}
public Material Mat
{
get { return this.m_Material; }
}
public void OnEnable()
{
if (m_Material == null)
{
var hdrp = GraphicsSettings.renderPipelineAsset as HDRenderPipelineAsset;
m_Material = hdrp != null ? hdrp.GetDefaultDecalMaterial() : null;
}
if(m_Handle != null)
DecalSystem.instance.RemoveDecal(m_Handle);
m_Handle = DecalSystem.instance.AddDecal(transform, m_DrawDistance, m_FadeScale, m_Material);
}
public void OnDisable()
{
DecalSystem.instance.RemoveDecal(m_Handle);
m_Handle = null;
}
// Declare the method signature of the delegate to call.
public delegate void OnMaterialChangeDelegate();
// Declare the event to which editor code will hook itself.
public event OnMaterialChangeDelegate OnMaterialChange;
public void OnValidate()
{
// handle material changes
if (m_OldMaterial != m_Material)
{
if( m_Handle != null)
DecalSystem.instance.RemoveDecal(m_Handle);
m_Handle = DecalSystem.instance.AddDecal(transform, m_DrawDistance, m_FadeScale, m_Material);
m_OldMaterial = m_Material;
// notify the editor that material has changed so it can update the shader foldout
if (OnMaterialChange != null)
{
OnMaterialChange();
}
}
if (m_Material != null)
{
Shader shader = m_Material.shader;
if((shader != null) && (shader.name != "HDRenderPipeline/Decal"))
{
Debug.LogWarning("Decal projector component material is not using HDRenderPipeline/Decal shader.", this);
}
}
}
private void DrawGizmo(bool selected)
{
var col = new Color(0.0f, 0.7f, 1f, 1.0f);
col.a = selected ? 0.3f : 0.1f;
Gizmos.color = col;
Matrix4x4 offset = Matrix4x4.Translate(new Vector3(0.0f, -0.5f, 0.0f));
Gizmos.matrix = transform.localToWorldMatrix * offset;
Gizmos.DrawCube(Vector3.zero, Vector3.one);
col.a = selected ? 0.5f : 0.2f;
Gizmos.color = col;
Gizmos.DrawWireCube(Vector3.zero, Vector3.one);
}
public void OnDrawGizmosSelected()
{
DrawGizmo(true);
// if this object is selected there is a chance the transform was changed so update culling info
DecalSystem.instance.UpdateCachedData(transform, m_DrawDistance, m_FadeScale, m_Handle);
}
public void OnDrawGizmos()
{
DrawGizmo(false);
}
public bool IsValid()
{
// don't draw if no material or if material is the default decal material (empty)
if (m_Material == null)
return false;
var hdrp = GraphicsSettings.renderPipelineAsset as HDRenderPipelineAsset;
if ((hdrp != null) && (m_Material == hdrp.GetDefaultDecalMaterial()))
return false;
return true;
}
}
}