using System; using UnityEditor; using UnityEngine; namespace UnityEngine.Experimental.Rendering.HDPipeline { [ExecuteInEditMode] public class DecalProjectorComponent : MonoBehaviour { private static readonly int m_WorldToDecal = Shader.PropertyToID("_WorldToDecal"); private static readonly int m_DecalToWorldR = Shader.PropertyToID("_DecalToWorldR"); public Material m_Material; private MaterialPropertyBlock m_PropertyBlock; public const int kInvalidIndex = -1; private int m_CullIndex = kInvalidIndex; public int CullIndex { get { return this.m_CullIndex; } set { this.m_CullIndex = value; } } public void OnEnable() { DecalSystem.instance.AddDecal(this); } public void Start() { m_PropertyBlock = new MaterialPropertyBlock(); DecalSystem.instance.AddDecal(this); } public void OnDisable() { DecalSystem.instance.RemoveDecal(this); } public void OnValidate() { BoundingSphere sphere = DecalSystem.instance.GetDecalProjectBoundingSphere(transform.localToWorldMatrix); 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.UpdateBoundingSphere(this); } public void UpdatePropertyBlock(Vector3 cameraPos) { Matrix4x4 CRWStoAWS = new Matrix4x4(); if (ShaderConfig.s_CameraRelativeRendering == 1) { CRWStoAWS = Matrix4x4.Translate(cameraPos); } else { CRWStoAWS = Matrix4x4.identity; } Matrix4x4 final = transform.localToWorldMatrix; Matrix4x4 decalToWorldR = Matrix4x4.Rotate(transform.localRotation); Matrix4x4 worldToDecal = Matrix4x4.Translate(new Vector3(0.5f, 0.0f, 0.5f)) * Matrix4x4.Scale(new Vector3(1.0f, -1.0f, 1.0f)) * final.inverse; if (m_PropertyBlock == null) { m_PropertyBlock = new MaterialPropertyBlock(); } m_PropertyBlock.SetMatrix(m_DecalToWorldR, decalToWorldR); m_PropertyBlock.SetMatrix(m_WorldToDecal, worldToDecal * CRWStoAWS); } public MaterialPropertyBlock GetPropertyBlock() { return m_PropertyBlock; } } }