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386 行
19 KiB
386 行
19 KiB
using System.Collections.Generic;
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using UnityEngine.Rendering;
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namespace UnityEngine.Experimental.Rendering.HDPipeline.Internal
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{
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class ReflectionSystemInternal
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{
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// -FLT_MAX in hlsl
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static readonly Color k_DiscardedColor = new Color(1000, 1000, 1000, 1000);
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static Camera s_RenderCamera = null;
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static HDAdditionalCameraData s_RenderCameraData;
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HashSet<PlanarReflectionProbe> m_PlanarReflectionProbes;
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HashSet<PlanarReflectionProbe> m_PlanarReflectionProbe_DirtyBounds;
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HashSet<PlanarReflectionProbe> m_PlanarReflectionProbe_RequestRealtimeRender;
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HashSet<PlanarReflectionProbe> m_PlanarReflectionProbe_RealtimeUpdate;
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HashSet<PlanarReflectionProbe> m_PlanarReflectionProbe_PerCamera_RealtimeUpdate;
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PlanarReflectionProbe[] m_PlanarReflectionProbe_RealtimeUpdate_WorkArray;
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Dictionary<PlanarReflectionProbe, BoundingSphere> m_PlanarReflectionProbeBounds;
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PlanarReflectionProbe[] m_PlanarReflectionProbesArray;
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BoundingSphere[] m_PlanarReflectionProbeBoundsArray;
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ReflectionSystemParameters m_Parameters;
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public ReflectionSystemInternal(ReflectionSystemParameters parameters, ReflectionSystemInternal previous)
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{
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m_Parameters = parameters;
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// Runtime collections
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m_PlanarReflectionProbeBounds = new Dictionary<PlanarReflectionProbe, BoundingSphere>(parameters.maxPlanarReflectionProbes);
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m_PlanarReflectionProbesArray = new PlanarReflectionProbe[parameters.maxPlanarReflectionProbes];
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m_PlanarReflectionProbeBoundsArray = new BoundingSphere[parameters.maxPlanarReflectionProbes];
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m_PlanarReflectionProbe_RealtimeUpdate_WorkArray = new PlanarReflectionProbe[parameters.maxPlanarReflectionProbes];
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// Persistent collections
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m_PlanarReflectionProbes = new HashSet<PlanarReflectionProbe>();
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m_PlanarReflectionProbe_DirtyBounds = new HashSet<PlanarReflectionProbe>();
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m_PlanarReflectionProbe_RequestRealtimeRender = new HashSet<PlanarReflectionProbe>();
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m_PlanarReflectionProbe_RealtimeUpdate = new HashSet<PlanarReflectionProbe>();
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m_PlanarReflectionProbe_PerCamera_RealtimeUpdate = new HashSet<PlanarReflectionProbe>();
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if (previous != null)
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{
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m_PlanarReflectionProbes.UnionWith(previous.m_PlanarReflectionProbes);
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m_PlanarReflectionProbe_DirtyBounds.UnionWith(m_PlanarReflectionProbes);
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m_PlanarReflectionProbe_RequestRealtimeRender.UnionWith(previous.m_PlanarReflectionProbe_RequestRealtimeRender);
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m_PlanarReflectionProbe_RealtimeUpdate.UnionWith(previous.m_PlanarReflectionProbe_RealtimeUpdate);
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m_PlanarReflectionProbe_PerCamera_RealtimeUpdate.UnionWith(previous.m_PlanarReflectionProbe_PerCamera_RealtimeUpdate);
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}
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}
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public void RegisterProbe(PlanarReflectionProbe planarProbe)
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{
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m_PlanarReflectionProbes.Add(planarProbe);
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SetProbeBoundsDirty(planarProbe);
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if (planarProbe.mode == ReflectionProbeMode.Realtime)
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{
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switch (planarProbe.refreshMode)
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{
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case ReflectionProbeRefreshMode.OnAwake:
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m_PlanarReflectionProbe_RequestRealtimeRender.Add(planarProbe);
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break;
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case ReflectionProbeRefreshMode.EveryFrame:
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{
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switch (planarProbe.capturePositionMode)
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{
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case PlanarReflectionProbe.CapturePositionMode.Static:
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m_PlanarReflectionProbe_RealtimeUpdate.Add(planarProbe);
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break;
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case PlanarReflectionProbe.CapturePositionMode.MirrorCamera:
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m_PlanarReflectionProbe_PerCamera_RealtimeUpdate.Add(planarProbe);
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break;
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}
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break;
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}
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}
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}
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}
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public void UnregisterProbe(PlanarReflectionProbe planarProbe)
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{
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m_PlanarReflectionProbes.Remove(planarProbe);
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m_PlanarReflectionProbeBounds.Remove(planarProbe);
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m_PlanarReflectionProbe_DirtyBounds.Remove(planarProbe);
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m_PlanarReflectionProbe_RequestRealtimeRender.Remove(planarProbe);
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m_PlanarReflectionProbe_RealtimeUpdate.Remove(planarProbe);
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m_PlanarReflectionProbe_PerCamera_RealtimeUpdate.Remove(planarProbe);
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}
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public void PrepareCull(Camera camera, ReflectionProbeCullResults results)
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{
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UpdateAllPlanarReflectionProbeBounds();
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var cullingGroup = new CullingGroup();
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cullingGroup.targetCamera = camera;
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cullingGroup.SetBoundingSpheres(m_PlanarReflectionProbeBoundsArray);
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cullingGroup.SetBoundingSphereCount(m_PlanarReflectionProbeBounds.Count);
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results.PrepareCull(cullingGroup, m_PlanarReflectionProbesArray);
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}
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public void RenderAllRealtimeProbesFor(Camera viewerCamera)
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{
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var length = Mathf.Min(m_PlanarReflectionProbe_PerCamera_RealtimeUpdate.Count, m_PlanarReflectionProbe_RealtimeUpdate_WorkArray.Length);
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m_PlanarReflectionProbe_PerCamera_RealtimeUpdate.CopyTo(m_PlanarReflectionProbe_RealtimeUpdate_WorkArray);
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// 1. Allocate if necessary target texture
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var renderCamera = GetRenderCamera();
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for (var i = 0; i < length; i++)
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{
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var probe = m_PlanarReflectionProbe_RealtimeUpdate_WorkArray[i];
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var hdCamera = HDCamera.Get(renderCamera, null, probe.frameSettings);
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if (!IsRealtimeTextureValid(probe.realtimeTexture, hdCamera))
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{
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if (probe.realtimeTexture != null)
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probe.realtimeTexture.Release();
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probe.realtimeTexture = NewRenderTarget(probe);
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}
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}
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// 2. Render
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for (var i = 0; i < length; i++)
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{
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var probe = m_PlanarReflectionProbe_RealtimeUpdate_WorkArray[i];
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Render(probe, probe.realtimeTexture, viewerCamera);
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}
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}
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public void RenderAllRealtimeProbes()
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{
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// Discard disabled probes in requested render probes
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m_PlanarReflectionProbe_RequestRealtimeRender.IntersectWith(m_PlanarReflectionProbes);
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// Include all realtime probe modes
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m_PlanarReflectionProbe_RequestRealtimeRender.UnionWith(m_PlanarReflectionProbe_RealtimeUpdate);
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var length = Mathf.Min(m_PlanarReflectionProbe_RequestRealtimeRender.Count, m_PlanarReflectionProbe_RealtimeUpdate_WorkArray.Length);
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m_PlanarReflectionProbe_RequestRealtimeRender.CopyTo(m_PlanarReflectionProbe_RealtimeUpdate_WorkArray);
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m_PlanarReflectionProbe_RequestRealtimeRender.Clear();
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// 1. Allocate if necessary target texture
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var camera = GetRenderCamera();
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for (var i = 0; i < length; i++)
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{
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var probe = m_PlanarReflectionProbe_RealtimeUpdate_WorkArray[i];
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var hdCamera = HDCamera.Get(camera, null, probe.frameSettings);
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if (!IsRealtimeTextureValid(probe.realtimeTexture, hdCamera))
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{
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if( probe.realtimeTexture != null)
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probe.realtimeTexture.Release();
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probe.realtimeTexture = NewRenderTarget(probe);
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}
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}
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// 2. Render
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for (var i = 0; i < length; i++)
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{
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var probe = m_PlanarReflectionProbe_RealtimeUpdate_WorkArray[i];
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Render(probe, probe.realtimeTexture);
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}
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}
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public RenderTexture NewRenderTarget(PlanarReflectionProbe probe)
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{
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var desc = GetRenderHDCamera(probe).renderTextureDesc;
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desc.width = m_Parameters.planarReflectionProbeSize;
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desc.height = m_Parameters.planarReflectionProbeSize;
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desc.colorFormat = RenderTextureFormat.ARGBHalf;
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desc.useMipMap = true;
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var rt = new RenderTexture(desc);
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rt.name = "PlanarProbeRT " + probe.name;
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return rt;
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}
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//public float GetCaptureCameraFOVFor(PlanarReflectionProbe probe, Camera viewerCamera)
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//{
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// switch (probe.influenceVolume.shapeType)
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// {
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// case ShapeType.Box:
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// {
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// var captureToWorld = probe.GetCaptureToWorld(viewerCamera);
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// var influenceToWorld = Matrix4x4.TRS(probe.transform.TransformPoint(probe.influenceVolume.boxBaseOffset), probe.transform.rotation, Vector3.one);
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// var influenceToCapture = captureToWorld.inverse * influenceToWorld;
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// var min = influenceToCapture.MultiplyPoint(-probe.influenceVolume.boxBaseSize * 0.5f);
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// var max = influenceToCapture.MultiplyPoint(probe.influenceVolume.boxBaseSize * 0.5f);
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// var minAngle = Mathf.Atan2(Mathf.Sqrt(min.x * min.x + min.y * min.y), min.z) * Mathf.Rad2Deg;
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// var maxAngle = Mathf.Atan2(Mathf.Sqrt(max.x * max.x + max.y * max.y), max.z) * Mathf.Rad2Deg;
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// return Mathf.Max(minAngle, maxAngle) * 2;
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// }
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// default:
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// throw new NotImplementedException();
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// }
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//}
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bool IsRealtimeTextureValid(RenderTexture renderTexture, HDCamera hdCamera)
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{
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return renderTexture != null
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&& renderTexture.width == m_Parameters.planarReflectionProbeSize
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&& renderTexture.height == m_Parameters.planarReflectionProbeSize
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&& renderTexture.format == RenderTextureFormat.ARGBHalf
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&& renderTexture.useMipMap;
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}
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public void RequestRealtimeRender(PlanarReflectionProbe probe)
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{
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m_PlanarReflectionProbe_RequestRealtimeRender.Add(probe);
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}
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public void Render(PlanarReflectionProbe probe, RenderTexture target, Camera viewerCamera = null)
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{
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var renderCamera = GetRenderHDCamera(probe);
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renderCamera.camera.targetTexture = target;
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SetupCameraForRender(renderCamera.camera, probe, viewerCamera);
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GL.invertCulling = IsProbeCaptureMirrored(probe, viewerCamera);
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renderCamera.camera.Render();
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GL.invertCulling = false;
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renderCamera.camera.targetTexture = null;
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target.IncrementUpdateCount();
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}
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void SetProbeBoundsDirty(PlanarReflectionProbe planarProbe)
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{
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m_PlanarReflectionProbe_DirtyBounds.Add(planarProbe);
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}
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void UpdateAllPlanarReflectionProbeBounds()
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{
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if (m_PlanarReflectionProbe_DirtyBounds.Count > 0)
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{
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m_PlanarReflectionProbe_DirtyBounds.IntersectWith(m_PlanarReflectionProbes);
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foreach (var planarReflectionProbe in m_PlanarReflectionProbe_DirtyBounds)
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UpdatePlanarReflectionProbeBounds(planarReflectionProbe);
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m_PlanarReflectionProbeBounds.Values.CopyTo(m_PlanarReflectionProbeBoundsArray, 0);
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m_PlanarReflectionProbeBounds.Keys.CopyTo(m_PlanarReflectionProbesArray, 0);
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}
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}
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void UpdatePlanarReflectionProbeBounds(PlanarReflectionProbe planarReflectionProbe)
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{
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m_PlanarReflectionProbeBounds[planarReflectionProbe] = planarReflectionProbe.boundingSphere;
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}
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static void SetupCameraForRender(Camera camera, PlanarReflectionProbe probe, Camera viewerCamera = null)
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{
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float nearClipPlane, farClipPlane, aspect, fov;
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Color backgroundColor;
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CameraClearFlags clearFlags;
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Vector3 capturePosition;
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Quaternion captureRotation;
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Matrix4x4 worldToCamera, projection;
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CalculateCaptureCameraProperties(probe,
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out nearClipPlane, out farClipPlane,
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out aspect, out fov, out clearFlags, out backgroundColor,
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out worldToCamera, out projection,
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out capturePosition, out captureRotation, viewerCamera);
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camera.farClipPlane = farClipPlane;
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camera.nearClipPlane = nearClipPlane;
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camera.fieldOfView = fov;
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camera.aspect = aspect;
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camera.clearFlags = clearFlags;
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// TODO: Find a cleaner way to discard pixel out of frustrum
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camera.backgroundColor = k_DiscardedColor;
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camera.projectionMatrix = projection;
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camera.worldToCameraMatrix = worldToCamera;
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var ctr = camera.transform;
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ctr.position = capturePosition;
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ctr.rotation = captureRotation;
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}
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public static void CalculateCaptureCameraViewProj(PlanarReflectionProbe probe, out Matrix4x4 worldToCamera, out Matrix4x4 projection, out Vector3 capturePosition, out Quaternion captureRotation, Camera viewerCamera = null)
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{
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float nearClipPlane, farClipPlane, aspect, fov;
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CameraClearFlags clearFlags;
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Color backgroundColor;
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CalculateCaptureCameraProperties(
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probe,
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out nearClipPlane, out farClipPlane,
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out aspect, out fov, out clearFlags, out backgroundColor,
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out worldToCamera, out projection, out capturePosition, out captureRotation,
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viewerCamera);
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}
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public static void CalculateCaptureCameraProperties(PlanarReflectionProbe probe, out float nearClipPlane, out float farClipPlane, out float aspect, out float fov, out CameraClearFlags clearFlags, out Color backgroundColor, out Matrix4x4 worldToCamera, out Matrix4x4 projection, out Vector3 capturePosition, out Quaternion captureRotation, Camera viewerCamera = null)
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{
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if (viewerCamera != null
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&& probe.mode == ReflectionProbeMode.Realtime
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&& probe.refreshMode == ReflectionProbeRefreshMode.EveryFrame
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&& probe.capturePositionMode == PlanarReflectionProbe.CapturePositionMode.MirrorCamera)
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CalculateMirroredCaptureCameraProperties(probe, viewerCamera, out nearClipPlane, out farClipPlane, out aspect, out fov, out clearFlags, out backgroundColor, out worldToCamera, out projection, out capturePosition, out captureRotation);
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else
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CalculateStaticCaptureCameraProperties(probe, out nearClipPlane, out farClipPlane, out aspect, out fov, out clearFlags, out backgroundColor, out worldToCamera, out projection, out capturePosition, out captureRotation);
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}
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static bool IsProbeCaptureMirrored(PlanarReflectionProbe probe, Camera viewerCamera)
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{
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return viewerCamera != null
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&& probe.mode == ReflectionProbeMode.Realtime
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&& probe.refreshMode == ReflectionProbeRefreshMode.EveryFrame
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&& probe.capturePositionMode == PlanarReflectionProbe.CapturePositionMode.MirrorCamera;
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}
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static void CalculateStaticCaptureCameraProperties(PlanarReflectionProbe probe, out float nearClipPlane, out float farClipPlane, out float aspect, out float fov, out CameraClearFlags clearFlags, out Color backgroundColor, out Matrix4x4 worldToCamera, out Matrix4x4 projection, out Vector3 capturePosition, out Quaternion captureRotation)
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{
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nearClipPlane = probe.captureNearPlane;
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farClipPlane = probe.captureFarPlane;
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aspect = 1f;
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fov = probe.overrideFieldOfView
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? probe.fieldOfViewOverride
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: 90f;
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clearFlags = CameraClearFlags.Nothing;
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backgroundColor = Color.white;
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capturePosition = probe.transform.TransformPoint(probe.captureLocalPosition);
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captureRotation = Quaternion.LookRotation((Vector3)probe.influenceToWorld.GetColumn(3) - capturePosition, probe.transform.up);
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worldToCamera = CameraUtils.CalculateWorldToCameraMatrixRHS(capturePosition, captureRotation);
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var clipPlane = CameraUtils.CameraSpacePlane(worldToCamera, probe.captureMirrorPlanePosition, probe.captureMirrorPlaneNormal);
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projection = Matrix4x4.Perspective(fov, aspect, nearClipPlane, farClipPlane);
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projection = CameraUtils.CalculateObliqueMatrix(projection, clipPlane);
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}
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static void CalculateMirroredCaptureCameraProperties(PlanarReflectionProbe probe, Camera viewerCamera, out float nearClipPlane, out float farClipPlane, out float aspect, out float fov, out CameraClearFlags clearFlags, out Color backgroundColor, out Matrix4x4 worldToCamera, out Matrix4x4 projection, out Vector3 capturePosition, out Quaternion captureRotation)
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{
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nearClipPlane = viewerCamera.nearClipPlane;
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farClipPlane = viewerCamera.farClipPlane;
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aspect = 1;
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fov = probe.overrideFieldOfView
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? probe.fieldOfViewOverride
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: Mathf.Max(viewerCamera.fieldOfView, viewerCamera.fieldOfView * viewerCamera.aspect);
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clearFlags = viewerCamera.clearFlags;
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backgroundColor = viewerCamera.backgroundColor;
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var worldToCapture = CameraUtils.CalculateWorldToCameraMatrixRHS(viewerCamera.transform);
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var reflectionMatrix = CameraUtils.CalculateReflectionMatrix(probe.captureMirrorPlanePosition, probe.captureMirrorPlaneNormal);
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worldToCamera = worldToCapture * reflectionMatrix;
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var clipPlane = CameraUtils.CameraSpacePlane(worldToCamera, probe.captureMirrorPlanePosition, probe.captureMirrorPlaneNormal);
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var sourceProj = Matrix4x4.Perspective(fov, aspect, nearClipPlane, farClipPlane);
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projection = CameraUtils.CalculateObliqueMatrix(sourceProj, clipPlane);
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capturePosition = reflectionMatrix.MultiplyPoint(viewerCamera.transform.position);
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var forward = reflectionMatrix.MultiplyVector(viewerCamera.transform.forward);
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var up = reflectionMatrix.MultiplyVector(viewerCamera.transform.up);
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captureRotation = Quaternion.LookRotation(forward, up);
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}
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public static HDCamera GetRenderHDCamera(PlanarReflectionProbe probe)
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{
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var camera = GetRenderCamera();
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probe.frameSettings.CopyTo(s_RenderCameraData.GetFrameSettings());
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return HDCamera.Get(camera, null, probe.frameSettings);
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}
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static Camera GetRenderCamera()
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{
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if (s_RenderCamera == null)
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{
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var go = GameObject.Find("__Probe Render Camera") ?? new GameObject("__Probe Render Camera");
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go.hideFlags = HideFlags.HideAndDontSave;
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s_RenderCamera = go.GetComponent<Camera>();
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if (s_RenderCamera == null || s_RenderCamera.Equals(null))
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s_RenderCamera = go.AddComponent<Camera>();
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s_RenderCameraData = go.GetComponent<HDAdditionalCameraData>();
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if (s_RenderCameraData == null || s_RenderCameraData.Equals(null))
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s_RenderCameraData = go.AddComponent<HDAdditionalCameraData>();
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go.SetActive(false);
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s_RenderCamera.cameraType = CameraType.Reflection;
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}
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return s_RenderCamera;
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}
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}
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}
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