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SEGICascaded.cs
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using UnityEngine;
using UnityEngine.Rendering;
using System.Collections;
using System;
using System.IO;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;
#if UNITY_EDITOR
using UnityEditor;
#endif
//[ExecuteInEditMode]
//#if UNITY_5_4_OR_NEWER
//[ImageEffectAllowedInSceneView]
//#endif
[RequireComponent(typeof(Camera))]
[AddComponentMenu("Image Effects/Sonic Ether/SEGI (Cascaded)")]
public class SEGICascaded : MonoBehaviour
{
#region Parameters
[Serializable]
public enum VoxelResolution
{
low = 64,
high = 128
}
public VoxelResolution voxelResolution = VoxelResolution.high;
public bool visualizeSunDepthTexture = false;
public bool visualizeGI = false;
public Light sun;
public LayerMask giCullingMask = 2147483647;
public LayerMask shadowVolumeMask = 0;
public float shadowSpaceSize = 50.0f;
[Range(0.01f, 1.0f)]
public float temporalBlendWeight = 0.1f;
public bool visualizeVoxels = false;
public bool visualizeShadowmapCopy = false;
public int shadowmapCopySize = 512;
public bool updateGI = true;
public bool useVolumeRayCast = false;
bool useVolumeRayCastPrev = false;
public Color skyColor;
public float voxelSpaceSize = 25.0f;
public bool useBilateralFiltering = false;
[Range(0, 2)]
public int innerOcclusionLayers = 1;
public bool halfResolution = false;
public bool stochasticSampling = true;
public bool infiniteBounces = false;
public bool infiniteBouncesRerenderObjects = false;
public Transform followTransform;
[Range(1, 128)]
public int cones = 4;
[Range(1, 32)]
public int coneTraceSteps = 10;
[Range(0.1f, 2.0f)]
public float coneLength = 1.0f;
[Range(0.5f, 6.0f)]
public float coneWidth = 3.9f;
[Range(0.0f, 2.0f)]
public float occlusionStrength = 0.15f;
[Range(0.0f, 4.0f)]
public float nearOcclusionStrength = 0.5f;
[Range(0.001f, 4.0f)]
public float occlusionPower = 0.65f;
[Range(0.0f, 4.0f)]
public float coneTraceBias = 2.8f;
[Range(0.0f, 4.0f)]
public float nearLightGain = 0.36f;
[Range(0.0f, 4.0f)]
public float giGain = 1.0f;
[Range(0.0f, 4.0f)]
public float secondaryBounceGain = 0.9f;
[Range(0.0f, 16.0f)]
public float softSunlight = 0.0f;
[Range(0.0f, 8.0f)]
public float skyIntensity = 1.0f;
[HideInInspector]
public bool doReflections
{
get
{
return false; //Locked to keep reflections disabled since they're in a broken state with cascades at the moment
}
set
{
value = false;
}
}
[Range(12, 128)]
public int reflectionSteps = 64;
[Range(0.001f, 4.0f)]
public float reflectionOcclusionPower = 1.0f;
[Range(0.0f, 1.0f)]
public float skyReflectionIntensity = 1.0f;
[Range(0.1f, 4.0f)]
public float farOcclusionStrength = 1.0f;
[Range(0.1f, 4.0f)]
public float farthestOcclusionStrength = 1.0f;
[Range(3, 16)]
public int secondaryCones = 6;
[Range(0.1f, 2.0f)]
public float secondaryOcclusionStrength = 0.27f;
public bool sphericalSkylight = false;
public bool useUnityShadowMap = false;
#endregion // Parameters
#region InternalVariables
object initChecker;
Material material;
Material m_CopyShadowParamsMaterial;
Camera attachedCamera;
Transform shadowCamTransform;
public Camera shadowCam;
GameObject shadowCamGameObject;
//public GameObject volumeGroup;
public bool showVolumeObjects = false;
public GameObject volumeCube;
public Camera volumeFrontCam;
public Camera volumeBackCam;
public float SEGIShadowBias = 0.2525f;
public float SEGIShadowScale = 1;
public RenderTexture FrontRT;
public RenderTexture BackRT;
Texture2D[] blueNoise;
public int sunShadowResolution = 128;
int prevSunShadowResolution;
Shader sunDepthShader;
Shader sunVolumeRayCastShader;
Shader frontRayCastShader;
Shader backRayCastShader;
float shadowSpaceDepthRatio = 10.0f;
int frameCounter = 0;
public RenderTexture m_ShadowmapCopy;
RenderTexture[] sunDepthTexture;
public int sunDepthTextureDepth = 32;
RenderTexture previousGIResult;
RenderTexture previousDepth;
///<summary>This is a volume texture that is immediately written to in the voxelization shader. The RInt format enables atomic writes to avoid issues where multiple fragments are trying to write to the same voxel in the volume.</summary>
// RenderTexture integerVolume;
public RenderTexture integerVolumeArray;
///<summary>A 2D texture with the size of [voxel resolution, voxel resolution] that must be used as the active render texture when rendering the scene for voxelization. This texture scales depending on whether Voxel AA is enabled to ensure correct voxelization.</summary>
RenderTexture dummyVoxelTextureAAScaled;
///<summary>A 2D texture with the size of [voxel resolution, voxel resolution] that must be used as the active render texture when rendering the scene for voxelization. This texture is always the same size whether Voxel AA is enabled or not.</summary>
RenderTexture dummyVoxelTextureFixed;
///<summary>The main GI data clipmaps that hold GI data referenced during GI tracing</summary>
public Clipmap[] clipmaps;
///<summary>The secondary clipmaps that hold irradiance data for infinite bounces</summary>
Clipmap[] irradianceClipmaps;
bool notReadyToRender = false;
Shader voxelizationShader;
Shader voxelizationShaderNoShadows;
Shader voxelTracingShader;
Shader m_CopyShadowParamsShader;
//ComputeShader clearCompute;
public ComputeShader transferIntsCompute;
ComputeShader mipFilterCompute;
const int numClipmaps = 6;
int clipmapCounter = 0;
public int currentClipmapIndex = 0;
public Camera voxelCamera;
GameObject voxelCameraGO;
GameObject leftViewPoint;
GameObject topViewPoint;
float voxelScaleFactor
{
get
{
return (float)voxelResolution / 256.0f;
}
}
Quaternion rotationFront = new Quaternion(0.0f, 0.0f, 0.0f, 1.0f);
Quaternion rotationLeft = new Quaternion(0.0f, 0.7f, 0.0f, 0.7f);
Quaternion rotationTop = new Quaternion(0.7f, 0.0f, 0.0f, 0.7f);
int giRenderRes
{
get
{
return halfResolution ? 2 : 1;
}
}
enum RenderState
{
Voxelize,
Bounce
}
RenderState renderState = RenderState.Voxelize;
ComputeBuffer m_ShadowParamsCB;
public Vector4 minPosVoxel;
Matrix4x4[] voxelToGIProjection;
Matrix4x4[] voxelProjectionInverse;
public Vector4 vecGridSize;
#endregion // InternalVariables
#region SupportingObjectsAndProperties
struct Pass
{
public static int DiffuseTrace = 0;
public static int BilateralBlur = 1;
public static int BlendWithScene = 2;
public static int TemporalBlend = 3;
public static int SpecularTrace = 4;
public static int GetCameraDepthTexture = 5;
public static int GetWorldNormals = 6;
public static int VisualizeGI = 7;
public static int WriteBlack = 8;
public static int VisualizeVoxels = 10;
public static int BilateralUpsample = 11;
}
public struct SystemSupported
{
public bool hdrTextures;
public bool rIntTextures;
public bool dx11;
public bool volumeTextures;
public bool postShader;
public bool sunDepthShader;
public bool voxelizationShader;
public bool tracingShader;
public bool fullFunctionality
{
get
{
return hdrTextures && rIntTextures && dx11 && volumeTextures && postShader && sunDepthShader && voxelizationShader && tracingShader;
}
}
}
/// <summary>
/// Contains info on system compatibility of required hardware functionality
/// </summary>
public SystemSupported systemSupported;
/// <summary>
/// Estimates the VRAM usage of all the render textures used to render GI.
/// </summary>
public float vramUsage //TODO: Update vram usage calculation
{
get
{
if (!enabled)
{
return 0.0f;
}
long v = 0;
if (sunDepthTexture != null)
for (int i = 0; i < sunDepthTexture.Length; i++)
{
if (sunDepthTexture[i] != null)
v += sunDepthTexture[i].width * sunDepthTexture[i].height * sunDepthTextureDepth;
}
if (previousGIResult != null)
v += previousGIResult.width * previousGIResult.height * 16 * 4;
if (previousDepth != null)
v += previousDepth.width * previousDepth.height * 32;
if (integerVolumeArray != null)
v += integerVolumeArray.width * integerVolumeArray.height * 32 * integerVolumeArray.volumeDepth;// integerVolume.volumeDepth * 32;
if (dummyVoxelTextureAAScaled != null)
v += dummyVoxelTextureAAScaled.width * dummyVoxelTextureAAScaled.height * 8;
if (dummyVoxelTextureFixed != null)
v += dummyVoxelTextureFixed.width * dummyVoxelTextureFixed.height * 8;
if (clipmaps != null)
{
for (int i = 0; i < numClipmaps; i++)
{
if (clipmaps[i] != null)
{
v += clipmaps[i].volumeTexture0.width * clipmaps[i].volumeTexture0.height * clipmaps[i].volumeTexture0.volumeDepth * 16 * 4;
}
}
}
if (irradianceClipmaps != null)
{
for (int i = 0; i < numClipmaps; i++)
{
if (irradianceClipmaps[i] != null)
{
v += irradianceClipmaps[i].volumeTexture0.width * irradianceClipmaps[i].volumeTexture0.height * irradianceClipmaps[i].volumeTexture0.volumeDepth * 16 * 4;
}
}
}
float vram = (v / 8388608.0f);
return vram;
}
}
public class Clipmap
{
public Vector3 origin;
public Vector3 originDelta;
public Vector3 previousOrigin;
public float localScale;
public int resolution;
public RenderTexture volumeTexture0;
public FilterMode filterMode = FilterMode.Bilinear;
public RenderTextureFormat renderTextureFormat = RenderTextureFormat.ARGBHalf;
public void UpdateTextures()
{
if (volumeTexture0)
{
//volumeTexture0.DiscardContents();
volumeTexture0.Release();
//DestroyImmediate(volumeTexture0);
}
volumeTexture0 = new RenderTexture(resolution, resolution, 0, renderTextureFormat, RenderTextureReadWrite.Linear);
volumeTexture0.wrapMode = TextureWrapMode.Clamp;
#if UNITY_5_4_OR_NEWER
volumeTexture0.dimension = TextureDimension.Tex3D;
#else
volumeTexture0.isVolume = true;
#endif
volumeTexture0.volumeDepth = resolution;
volumeTexture0.enableRandomWrite = true;
volumeTexture0.filterMode = filterMode;
#if UNITY_5_4_OR_NEWER
volumeTexture0.autoGenerateMips = false;
#else
volumeTexture0.generateMips = false;
#endif
volumeTexture0.useMipMap = false;
volumeTexture0.Create();
volumeTexture0.hideFlags = HideFlags.HideAndDontSave;
}
public void CleanupTextures()
{
if (volumeTexture0)
{
//volumeTexture0.DiscardContents();
volumeTexture0.Release();
//DestroyImmediate(volumeTexture0);//TODO needed? unity should handle this
}
}
}
public bool gaussianMipFilter
{
get
{
return false;
}
set
{
value = false;
}
}
int mipFilterKernel
{
get
{
return gaussianMipFilter ? 1 : 0;
}
}
public bool voxelAA = false;
int dummyVoxelResolution
{
get
{
return (int)voxelResolution * (voxelAA ? 4 : 1);
}
}
#endregion // SupportingObjectsAndProperties
public void ApplyPreset(SEGICascadedPreset preset)
{
voxelResolution = preset.voxelResolution;
voxelAA = preset.voxelAA;
innerOcclusionLayers = preset.innerOcclusionLayers;
infiniteBounces = preset.infiniteBounces;
temporalBlendWeight = preset.temporalBlendWeight;
useBilateralFiltering = preset.useBilateralFiltering;
halfResolution = preset.halfResolution;
stochasticSampling = preset.stochasticSampling;
doReflections = preset.doReflections;
cones = preset.cones;
coneTraceSteps = preset.coneTraceSteps;
coneLength = preset.coneLength;
coneWidth = preset.coneWidth;
coneTraceBias = preset.coneTraceBias;
occlusionStrength = preset.occlusionStrength;
nearOcclusionStrength = preset.nearOcclusionStrength;
occlusionPower = preset.occlusionPower;
nearLightGain = preset.nearLightGain;
giGain = preset.giGain;
secondaryBounceGain = preset.secondaryBounceGain;
reflectionSteps = preset.reflectionSteps;
reflectionOcclusionPower = preset.reflectionOcclusionPower;
skyReflectionIntensity = preset.skyReflectionIntensity;
gaussianMipFilter = preset.gaussianMipFilter;
farOcclusionStrength = preset.farOcclusionStrength;
farthestOcclusionStrength = preset.farthestOcclusionStrength;
secondaryCones = preset.secondaryCones;
secondaryOcclusionStrength = preset.secondaryOcclusionStrength;
}
public virtual void Start()
{
InitCheck();
InitShadowmapCopy();
}
void InitCheck()
{
if (initChecker == null)
{
Init();
}
}
public virtual void InitShadowmapCopy()
{
CheckShadowKeyword("SEGI_UNITY_SHADOWMAP_", useUnityShadowMap ? "ON" : "OFF");
if (useUnityShadowMap)
{
//if (ngss.m_ShadowmapCopy != null)
//{
// Debug.Log("SEGI using external m_ShadowmapCopy");
// m_ShadowmapCopy = ngss.m_ShadowmapCopy;
//}
//Debug.Log("m_ShadowmapCopy " + m_ShadowmapCopy);
if (m_ShadowmapCopy == null)
{
RenderTargetIdentifier shadowmap = BuiltinRenderTextureType.CurrentActive;
m_ShadowmapCopy = new RenderTexture(shadowmapCopySize, shadowmapCopySize, 0);//TODO
CommandBuffer cb = new CommandBuffer();
// Change shadow sampling mode for sun's shadowmap.
cb.SetShadowSamplingMode(shadowmap, ShadowSamplingMode.RawDepth);
// The shadowmap values can now be sampled normally - copy it to a different render texture.
cb.Blit(shadowmap, new RenderTargetIdentifier(m_ShadowmapCopy));
// Execute after the shadowmap has been filled.
sun.AddCommandBuffer(LightEvent.AfterShadowMap, cb);
// Sampling mode is restored automatically after this command buffer completes, so shadows will render normally.
}
}
}
void CreateVolumeTextures()
{
var size2D = FindTextureSize((int)voxelResolution);
int chucks2D = Mathf.CeilToInt(size2D[0] / (float)voxelResolution);
vecGridSize = new Vector4((int)voxelResolution, (int)voxelResolution, (int)voxelResolution, chucks2D);
if (integerVolumeArray)
{
//integerVolume.DiscardContents();
integerVolumeArray.Release();
//DestroyImmediate(integerVolume);
}
integerVolumeArray = new RenderTexture((int)size2D[0], (int)size2D[1], 0, RenderTextureFormat.RInt, RenderTextureReadWrite.Linear);
integerVolumeArray.dimension = TextureDimension.Tex2DArray;
integerVolumeArray.volumeDepth = useVolumeRayCast ? 6 : 1;
//integerVolumeArray.useMipMap = true;
integerVolumeArray.autoGenerateMips = false;
integerVolumeArray.enableRandomWrite = true;
integerVolumeArray.filterMode = FilterMode.Point;
integerVolumeArray.hideFlags = HideFlags.HideAndDontSave;
integerVolumeArray.Create();
ResizeDummyTexture();
}
void BuildClipmaps()
{
if (clipmaps != null)
{
for (int i = 0; i < numClipmaps; i++)
{
if (clipmaps[i] != null)
{
clipmaps[i].CleanupTextures();
}
}
}
clipmaps = new Clipmap[numClipmaps];
for (int i = 0; i < numClipmaps; i++)
{
clipmaps[i] = new Clipmap();
clipmaps[i].localScale = Mathf.Pow(2.0f, (float)i);
clipmaps[i].resolution = (int)voxelResolution;
clipmaps[i].filterMode = FilterMode.Bilinear;
clipmaps[i].renderTextureFormat = RenderTextureFormat.ARGBHalf;
clipmaps[i].UpdateTextures();
}
if (irradianceClipmaps != null)
{
for (int i = 0; i < numClipmaps; i++)
{
if (irradianceClipmaps[i] != null)
{
irradianceClipmaps[i].CleanupTextures();
}
}
}
irradianceClipmaps = new Clipmap[numClipmaps];
for (int i = 0; i < numClipmaps; i++)
{
irradianceClipmaps[i] = new Clipmap();
irradianceClipmaps[i].localScale = Mathf.Pow(2.0f, i);
irradianceClipmaps[i].resolution = (int)voxelResolution;
irradianceClipmaps[i].filterMode = FilterMode.Point;
irradianceClipmaps[i].renderTextureFormat = RenderTextureFormat.ARGBHalf;
irradianceClipmaps[i].UpdateTextures();
}
}
void ResizeDummyTexture()
{
if (dummyVoxelTextureAAScaled)
{
//dummyVoxelTextureAAScaled.DiscardContents();
dummyVoxelTextureAAScaled.Release();
//DestroyImmediate(dummyVoxelTextureAAScaled);
}
dummyVoxelTextureAAScaled = new RenderTexture(dummyVoxelResolution, dummyVoxelResolution, 0, RenderTextureFormat.R8);
dummyVoxelTextureAAScaled.Create();
dummyVoxelTextureAAScaled.hideFlags = HideFlags.HideAndDontSave;
if (dummyVoxelTextureFixed)
{
//dummyVoxelTextureFixed.DiscardContents();
dummyVoxelTextureFixed.Release();
//DestroyImmediate(dummyVoxelTextureFixed);
}
dummyVoxelTextureFixed = new RenderTexture((int)voxelResolution, (int)voxelResolution, 0, RenderTextureFormat.R8);
dummyVoxelTextureFixed.Create();
dummyVoxelTextureFixed.hideFlags = HideFlags.HideAndDontSave;
}
void GetBlueNoiseTextures()
{
blueNoise = null;
blueNoise = new Texture2D[64];
for (int i = 0; i < 64; i++)
{
string filename = "LDR_RGBA_" + i.ToString();
Texture2D blueNoiseTexture = Resources.Load("Noise Textures/" + filename) as Texture2D;
if (blueNoiseTexture == null)
{
Debug.LogWarning("Unable to find noise texture \"Assets/SEGI/Resources/Noise Textures/" + filename + "\" for SEGI!");
}
blueNoise[i] = blueNoiseTexture;
}
}
void SetupSunDepthTexture()
{
int length = useVolumeRayCast ? numClipmaps : 1;
//Debug.Log("sunDepthTexture " + sunDepthTexture);
if (sunDepthTexture == null)// || sunDepthTexture[0] == null || length != sunDepthTexture.Length)
{
sunDepthTexture = new RenderTexture[length];
ResizeSunShadowBuffer();
//Debug.Log("sunDepthTexture " + sunDepthTexture + " "+ sunDepthTexture.Length);
}
}
void SetupVolumeRayCasting()
{
useVolumeRayCastPrev = useVolumeRayCast;
SetupSunDepthTexture();
CreateVolumeTextures();
if (useVolumeRayCast)
{
voxelToGIProjection = new Matrix4x4[numClipmaps];
voxelProjectionInverse = new Matrix4x4[numClipmaps];
for (int i = 0; i < numClipmaps; i++)
{
voxelToGIProjection[i] = Matrix4x4.identity;
voxelProjectionInverse[i] = Matrix4x4.identity;
}
volumeCube = GameObject.Find("SEGICubeVolume");
if (!volumeCube)
{
volumeCube = GameObject.CreatePrimitive(PrimitiveType.Cube);
volumeCube.name = "SEGICubeVolume";
DestroyImmediate(volumeCube.GetComponent<Collider>());
}
volumeCube.layer = 19;//TODO use front layer
volumeCube.GetComponent<Renderer>().sharedMaterial = (Material)Resources.Load("SEGIFrontRC", typeof(Material));
volumeCube.GetComponent<Renderer>().shadowCastingMode = ShadowCastingMode.Off;
volumeCube.hideFlags = showVolumeObjects ? HideFlags.None : HideFlags.HideAndDontSave;
shadowVolumeMask = 1 << volumeCube.layer;
if (!FrontRT)
{
FrontRT = new RenderTexture(sunShadowResolution, sunShadowResolution, 0, RenderTextureFormat.ARGBFloat, RenderTextureReadWrite.Linear);
FrontRT.autoGenerateMips = false;
FrontRT.wrapMode = TextureWrapMode.Clamp;
FrontRT.filterMode = FilterMode.Point;
FrontRT.hideFlags = HideFlags.HideAndDontSave;
}
if (!BackRT)
{
BackRT = new RenderTexture(sunShadowResolution, sunShadowResolution, 0, RenderTextureFormat.ARGBFloat, RenderTextureReadWrite.Linear);
BackRT.autoGenerateMips = false;
BackRT.wrapMode = TextureWrapMode.Clamp;
BackRT.filterMode = FilterMode.Point;
BackRT.hideFlags = HideFlags.HideAndDontSave;
}
FixRes(FrontRT);
FixRes(BackRT);
Shader.SetGlobalTexture("SEGIFrontS", FrontRT);
Shader.SetGlobalTexture("SEGIBackS", BackRT);
GameObject frontCam = GameObject.Find("VolumeFrontCam");
if (frontCam != null) volumeFrontCam = frontCam.GetComponent<Camera>();
if (!volumeFrontCam)
{
var goFrontCam = new GameObject("VolumeFrontCam");
goFrontCam.hideFlags = HideFlags.HideAndDontSave;
volumeFrontCam = goFrontCam.AddComponent<Camera>();
}
volumeFrontCam.CopyFrom(shadowCam);
volumeFrontCam.cullingMask = shadowVolumeMask;
volumeFrontCam.depth = -99;
volumeFrontCam.targetTexture = FrontRT;
volumeFrontCam.enabled = false;
GameObject backCam = GameObject.Find("VolumeBackCam");
if (backCam != null) volumeBackCam = backCam.GetComponent<Camera>();
if (!volumeBackCam)
{
var goBackCam = new GameObject("VolumeBackCam");
goBackCam.hideFlags = HideFlags.HideAndDontSave;
volumeBackCam = goBackCam.AddComponent<Camera>();
}
volumeBackCam.CopyFrom(shadowCam);
volumeBackCam.cullingMask = shadowVolumeMask;
volumeBackCam.depth = -99;
volumeBackCam.targetTexture = BackRT;
volumeBackCam.enabled = false;
}
}
void Init()
{
//Setup shaders and materials
sunDepthShader = Shader.Find("Hidden/SEGIRenderSunDepth_C");
sunVolumeRayCastShader = Shader.Find("Custom/VolumeRayCasting");//TODO
frontRayCastShader = Shader.Find("Custom/FrontPos");
backRayCastShader = Shader.Find("Custom/BackPos");
//clearCompute = Resources.Load("SEGIClear_C") as ComputeShader;
transferIntsCompute = Resources.Load("SEGITransferInts_C") as ComputeShader;
mipFilterCompute = Resources.Load("SEGIMipFilter_C") as ComputeShader;
voxelizationShader = Shader.Find("Hidden/SEGIVoxelizeScene_C");
voxelizationShaderNoShadows = Shader.Find("Hidden/SEGIVoxelizeSceneNoShadows_C");
voxelTracingShader = Shader.Find("Hidden/SEGITraceScene_C");
m_CopyShadowParamsShader = Shader.Find("Hidden/SEGICopyShadowParams");
if (!material)
{
material = new Material(Shader.Find("Hidden/SEGI_C"));
material.hideFlags = HideFlags.HideAndDontSave;
}
if (!m_CopyShadowParamsMaterial)
{
m_CopyShadowParamsMaterial = new Material(m_CopyShadowParamsShader);
m_CopyShadowParamsMaterial.hideFlags = HideFlags.HideAndDontSave;
}
//Get the camera attached to this game object
attachedCamera = this.GetComponent<Camera>();
attachedCamera.depthTextureMode |= DepthTextureMode.Depth;
attachedCamera.depthTextureMode |= DepthTextureMode.DepthNormals;
#if UNITY_5_4_OR_NEWER
attachedCamera.depthTextureMode |= DepthTextureMode.MotionVectors;
#endif
//Find the proxy shadow rendering camera if it exists
GameObject scgo = GameObject.Find("SEGI_SHADOWCAM");
//If not, create it
if (!scgo)
{
shadowCamGameObject = new GameObject("SEGI_SHADOWCAM");
shadowCam = shadowCamGameObject.AddComponent<Camera>();
shadowCamGameObject.hideFlags = HideFlags.HideAndDontSave;
shadowCam.enabled = false;
shadowCam.depth = attachedCamera.depth - 1;
shadowCam.orthographic = true;
shadowCam.orthographicSize = shadowSpaceSize;
shadowCam.clearFlags = CameraClearFlags.SolidColor;
shadowCam.backgroundColor = new Color(0.0f, 0.0f, 0.0f, 1.0f);
shadowCam.farClipPlane = shadowSpaceSize * 2.0f * shadowSpaceDepthRatio;
shadowCam.cullingMask = giCullingMask;
shadowCam.useOcclusionCulling = false;
shadowCam.allowMSAA = false;
shadowCam.renderingPath = RenderingPath.Forward;
shadowCamTransform = shadowCamGameObject.transform;
}
else //Otherwise, it already exists, just get it
{
shadowCamGameObject = scgo;
shadowCam = scgo.GetComponent<Camera>();
shadowCamTransform = shadowCamGameObject.transform;
}
SetupVolumeRayCasting();
//Create the proxy camera objects responsible for rendering the scene to voxelize the scene. If they already exist, destroy them
GameObject vcgo = GameObject.Find("SEGI_VOXEL_CAMERA");
if (!vcgo)
{
voxelCameraGO = new GameObject("SEGI_VOXEL_CAMERA");
voxelCameraGO.hideFlags = HideFlags.HideAndDontSave;
voxelCamera = voxelCameraGO.AddComponent<Camera>();
voxelCamera.enabled = false;
voxelCamera.orthographic = true;
voxelCamera.orthographicSize = voxelSpaceSize * 0.5f;
voxelCamera.nearClipPlane = 0.0f;
voxelCamera.farClipPlane = voxelSpaceSize;
voxelCamera.depth = -2;
voxelCamera.renderingPath = RenderingPath.Forward;
voxelCamera.clearFlags = CameraClearFlags.Color;
voxelCamera.backgroundColor = Color.black;
voxelCamera.useOcclusionCulling = false;
}
else
{
voxelCameraGO = vcgo;
voxelCamera = vcgo.GetComponent<Camera>();
}
GameObject lvp = GameObject.Find("SEGI_LEFT_VOXEL_VIEW");
if (!lvp)
{
leftViewPoint = new GameObject("SEGI_LEFT_VOXEL_VIEW");
leftViewPoint.hideFlags = HideFlags.HideAndDontSave;
}
else
{
leftViewPoint = lvp;
}
GameObject tvp = GameObject.Find("SEGI_TOP_VOXEL_VIEW");
if (!tvp)
{
topViewPoint = new GameObject("SEGI_TOP_VOXEL_VIEW");
topViewPoint.hideFlags = HideFlags.HideAndDontSave;
}
else
{
topViewPoint = tvp;
}
//Setup sun depth texture
SetupSunDepthTexture();
CreateVolumeTextures();
BuildClipmaps();
GetBlueNoiseTextures();
initChecker = new object();
}
void CheckSupport()
{
systemSupported.hdrTextures = SystemInfo.SupportsRenderTextureFormat(RenderTextureFormat.ARGBHalf);
systemSupported.rIntTextures = SystemInfo.SupportsRenderTextureFormat(RenderTextureFormat.RInt);
systemSupported.dx11 = SystemInfo.graphicsShaderLevel >= 50 && SystemInfo.supportsComputeShaders;
systemSupported.volumeTextures = SystemInfo.supports3DTextures;
systemSupported.postShader = material.shader.isSupported;
systemSupported.sunDepthShader = sunDepthShader.isSupported;
systemSupported.voxelizationShader = voxelizationShader.isSupported;
systemSupported.tracingShader = voxelTracingShader.isSupported;
if (!systemSupported.fullFunctionality)
{
Debug.LogWarning("SEGI is not supported on the current platform. Check for shader compile errors in SEGI/Resources");
enabled = false;
}
}
void OnDrawGizmosSelected()
{
if (!enabled)
return;
Color prevColor = Gizmos.color;
Gizmos.color = new Color(1.0f, 0.25f, 0.0f, 0.5f);
if (clipmaps != null && clipmaps[numClipmaps - 1] != null)
{
float scale = clipmaps[numClipmaps - 1].localScale;
Gizmos.DrawCube(clipmaps[0].origin, new Vector3(voxelSpaceSize * scale, voxelSpaceSize * scale, voxelSpaceSize * scale));
}
Gizmos.color = new Color(1.0f, 0.0f, 0.0f, 0.1f);
Gizmos.color = prevColor;
}
void CleanupTexture(ref RenderTexture texture)
{
if (texture)
{
//texture.DiscardContents();
texture.Release();
//DestroyImmediate(texture);//TODO needed?
}
}
void CleanupTextures()
{
for (int i = 0; i < sunDepthTexture.Length; i++)
CleanupTexture(ref sunDepthTexture[i]);
CleanupTexture(ref previousGIResult);
CleanupTexture(ref previousDepth);
//CleanupTexture(ref integerVolume);
CleanupTexture(ref integerVolumeArray);
CleanupTexture(ref dummyVoxelTextureAAScaled);
CleanupTexture(ref dummyVoxelTextureFixed);
if (clipmaps != null)
{
for (int i = 0; i < numClipmaps; i++)
{
if (clipmaps[i] != null)
{
clipmaps[i].CleanupTextures();
}
}
}
if (irradianceClipmaps != null)
{
for (int i = 0; i < numClipmaps; i++)
{
if (irradianceClipmaps[i] != null)
{
irradianceClipmaps[i].CleanupTextures();
}
}
}
}
void Cleanup()
{
if (m_ShadowParamsCB != null)
m_ShadowParamsCB.Release();
m_ShadowParamsCB = null;
DestroyImmediate(material);
DestroyImmediate(m_CopyShadowParamsMaterial);
DestroyImmediate(voxelCameraGO);
DestroyImmediate(leftViewPoint);
DestroyImmediate(topViewPoint);
DestroyImmediate(shadowCamGameObject);
DestroyImmediate(volumeCube);
initChecker = null;
CleanupTextures();
}
void OnEnable()
{
InitCheck();
ResizeRenderTextures();
CheckSupport();
}
void OnDisable()
{
Cleanup();
}
void ResizeRenderTextures()
{
if (previousGIResult)
{
//previousGIResult.DiscardContents();
previousGIResult.Release();
//DestroyImmediate(previousGIResult);
}
int width = attachedCamera.pixelWidth == 0 ? 2 : attachedCamera.pixelWidth;
int height = attachedCamera.pixelHeight == 0 ? 2 : attachedCamera.pixelHeight;
previousGIResult = new RenderTexture(width, height, 0, RenderTextureFormat.ARGBHalf);
previousGIResult.wrapMode = TextureWrapMode.Clamp;
previousGIResult.filterMode = FilterMode.Bilinear;
previousGIResult.Create();
previousGIResult.hideFlags = HideFlags.HideAndDontSave;
if (previousDepth)
{
//previousDepth.DiscardContents();
previousDepth.Release();
//DestroyImmediate(previousDepth);
}
previousDepth = new RenderTexture(width, height, 0, RenderTextureFormat.RFloat, RenderTextureReadWrite.Linear);
previousDepth.wrapMode = TextureWrapMode.Clamp;
previousDepth.filterMode = FilterMode.Bilinear;
previousDepth.Create();
previousDepth.hideFlags = HideFlags.HideAndDontSave;
}
void ResizeSunShadowBuffer()
{
//sunDepthTexture = new RenderTexture[numClipmaps];
for (int i = 0; i < sunDepthTexture.Length; i++)
{
if (sunDepthTexture[i])
{
//sunDepthTexture[i].DiscardContents();