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using UnityEngine.Rendering;
using System;
using System.Collections.Generic;
namespace UnityEngine.Experimental.Rendering.Fptl
{
class ShadowSetup : IDisposable
{
// shadow related stuff
const int k_MaxShadowDataSlots = 64;
const int k_MaxPayloadSlotsPerShadowData = 4;
ShadowmapBase[] m_Shadowmaps;
ShadowManager m_ShadowMgr;
static ComputeBuffer s_ShadowDataBuffer;
static ComputeBuffer s_ShadowPayloadBuffer;
public ShadowSetup(ShadowInitParameters shadowInit, ShadowSettings shadowSettings, out IShadowManager shadowManager)
{
s_ShadowDataBuffer = new ComputeBuffer(k_MaxShadowDataSlots, System.Runtime.InteropServices.Marshal.SizeOf(typeof(ShadowData)));
s_ShadowPayloadBuffer = new ComputeBuffer(k_MaxShadowDataSlots * k_MaxPayloadSlotsPerShadowData, System.Runtime.InteropServices.Marshal.SizeOf(typeof(ShadowPayload)));
ShadowAtlas.AtlasInit atlasInit;
atlasInit.baseInit.width = (uint)shadowInit.shadowAtlasWidth;
atlasInit.baseInit.height = (uint)shadowInit.shadowAtlasHeight;
atlasInit.baseInit.slices = 1;
atlasInit.baseInit.shadowmapBits = 32;
atlasInit.baseInit.shadowmapFormat = RenderTextureFormat.Shadowmap;
atlasInit.baseInit.samplerState = SamplerState.Default();
atlasInit.baseInit.comparisonSamplerState = ComparisonSamplerState.Default();
atlasInit.baseInit.clearColor = new Vector4(0.0f, 0.0f, 0.0f, 0.0f);
atlasInit.baseInit.maxPayloadCount = 0;
atlasInit.baseInit.shadowSupport = ShadowmapBase.ShadowSupport.Directional | ShadowmapBase.ShadowSupport.Point | ShadowmapBase.ShadowSupport.Spot;
atlasInit.shaderKeyword = null;
m_Shadowmaps = new ShadowmapBase[] { new ShadowAtlas(ref atlasInit) };
ShadowContext.SyncDel syncer = (ShadowContext sc) =>
{
// update buffers
uint offset, count;
ShadowData[] sds;
sc.GetShadowDatas(out sds, out offset, out count);
Debug.Assert(offset == 0);
s_ShadowDataBuffer.SetData(sds); // unfortunately we can't pass an offset or count to this function
ShadowPayload[] payloads;
sc.GetPayloads(out payloads, out offset, out count);
Debug.Assert(offset == 0);
s_ShadowPayloadBuffer.SetData(payloads);
};
// binding code. This needs to be in sync with ShadowContext.hlsl
ShadowContext.BindDel binder = (ShadowContext sc, CommandBuffer cb, ComputeShader computeShader, int computeKernel) =>
{
// bind buffers
cb.SetGlobalBuffer("_ShadowDatasExp", s_ShadowDataBuffer);
cb.SetGlobalBuffer("_ShadowPayloads", s_ShadowPayloadBuffer);
// bind textures
uint offset, count;
RenderTargetIdentifier[] tex;
sc.GetTex2DArrays(out tex, out offset, out count);
cb.SetGlobalTexture("_ShadowmapExp_PCF", tex[0]);
// TODO: Currently samplers are hard coded in ShadowContext.hlsl, so we can't really set them here
};
ShadowContext.CtxtInit scInit;
scInit.storage.maxShadowDataSlots = k_MaxShadowDataSlots;
scInit.storage.maxPayloadSlots = k_MaxShadowDataSlots * k_MaxPayloadSlotsPerShadowData;
scInit.storage.maxTex2DArraySlots = 1;
scInit.storage.maxTexCubeArraySlots = 0;
scInit.storage.maxComparisonSamplerSlots = 1;
scInit.storage.maxSamplerSlots = 0;
scInit.dataSyncer = syncer;
scInit.resourceBinder = binder;
m_ShadowMgr = new ShadowManager(shadowSettings, ref scInit, m_Shadowmaps);
// set global overrides - these need to match the override specified in ShadowDispatch.hlsl
m_ShadowMgr.SetGlobalShadowOverride( GPUShadowType.Point , ShadowAlgorithm.PCF, ShadowVariant.V1, ShadowPrecision.High, true );
m_ShadowMgr.SetGlobalShadowOverride( GPUShadowType.Spot , ShadowAlgorithm.PCF, ShadowVariant.V1, ShadowPrecision.High, true );
m_ShadowMgr.SetGlobalShadowOverride( GPUShadowType.Directional , ShadowAlgorithm.PCF, ShadowVariant.V1, ShadowPrecision.High, true );
shadowManager = m_ShadowMgr;
}
public void Dispose()
{
if (m_Shadowmaps != null)
{
(m_Shadowmaps[0] as ShadowAtlas).Dispose();
m_Shadowmaps = null;
}
m_ShadowMgr = null;
if( s_ShadowDataBuffer != null )
s_ShadowDataBuffer.Release();
if( s_ShadowPayloadBuffer != null )
s_ShadowPayloadBuffer.Release();
}
}
public class FptlLightingInstance : RenderPipeline
{
private readonly FptlLighting m_Owner;
public FptlLightingInstance(FptlLighting owner)
{
m_Owner = owner;
if (m_Owner != null)
m_Owner.Build();
}
public override void Dispose()
{
base.Dispose();
if (m_Owner != null)
m_Owner.Cleanup();
}
public override void Render(ScriptableRenderContext renderContext, Camera[] cameras)
{
base.Render(renderContext, cameras);
m_Owner.Render(renderContext, cameras);
}
}
[ExecuteInEditMode]
public class FptlLighting : RenderPipelineAsset
{
#if UNITY_EDITOR
[UnityEditor.MenuItem("Assets/Create/Render Pipeline/FPTL/Render Pipeline", priority = CoreUtils.assetCreateMenuPriority1)]
static void CreateRenderLoopFPTL()
{
var instance = ScriptableObject.CreateInstance<FptlLighting>();
UnityEditor.AssetDatabase.CreateAsset(instance, "Assets/ScriptableRenderPipeline/fptl/FPTLRenderPipeline.asset");
//AssetDatabase.CreateAsset(instance, "Assets/ScriptableRenderPipeline/fptl/FPTLRenderPipeline.asset");
}
#endif
protected override IRenderPipeline InternalCreatePipeline()
{
return new FptlLightingInstance(this);
}
[SerializeField]
ShadowSettings m_ShadowSettings = new ShadowSettings();
ShadowSetup m_ShadowSetup;
IShadowManager m_ShadowMgr;
FrameId m_FrameId = new FrameId();
List<int> m_ShadowRequests = new List<int>();
Dictionary<int, int> m_ShadowIndices = new Dictionary<int,int>();
void InitShadowSystem(ShadowSettings shadowSettings)
{
m_ShadowSetup = new ShadowSetup(new ShadowInitParameters(), shadowSettings, out m_ShadowMgr);
}
void DeinitShadowSystem()
{
if (m_ShadowSetup != null)
{
m_ShadowSetup.Dispose();
m_ShadowSetup = null;
m_ShadowMgr = null;
}
}
[SerializeField]
TextureSettings m_TextureSettings = new TextureSettings();
public Shader deferredShader;
public Shader deferredReflectionShader;
public Shader finalPassShader;
public Shader debugLightBoundsShader;
public ComputeShader buildScreenAABBShader;
public ComputeShader buildPerTileLightListShader; // FPTL
public ComputeShader buildPerBigTileLightListShader;
public ComputeShader buildPerVoxelLightListShader; // clustered
private Material m_DeferredMaterial;
private Material m_DeferredReflectionMaterial;
private static int s_GBufferAlbedo;
private static int s_GBufferSpecRough;
private static int s_GBufferNormal;
private static int s_GBufferEmission;
private static int s_GBufferZ;
private static int s_CameraTarget;
private static int s_CameraDepthTexture;
private static int s_GenAABBKernel;
private static int s_GenListPerTileKernel;
private static int s_GenListPerVoxelKernel;
private static int s_ClearVoxelAtomicKernel;
private static ComputeBuffer s_LightDataBuffer;
private static ComputeBuffer s_ConvexBoundsBuffer;
private static ComputeBuffer s_AABBBoundsBuffer;
private static ComputeBuffer s_LightList;
private static ComputeBuffer s_DirLightList;
private static ComputeBuffer s_LightIndices;
private static ComputeBuffer s_BigTileLightList; // used for pre-pass coarse culling on 64x64 tiles
private static int s_GenListPerBigTileKernel;
// clustered light list specific buffers and data begin
public bool enableClustered = false;
public bool disableFptlWhenClustered = false; // still useful on opaques
public bool enableBigTilePrepass = true;
public bool enableDrawLightBoundsDebug = false;
public bool enableDrawTileDebug = false;
public bool enableReflectionProbeDebug = false;
const bool k_UseDepthBuffer = true;// // only has an impact when EnableClustered is true (requires a depth-prepass)
const bool k_UseAsyncCompute = true;// should not use on mobile
const int k_Log2NumClusters = 6; // accepted range is from 0 to 6. NumClusters is 1<<g_iLog2NumClusters
const float k_ClustLogBase = 1.02f; // each slice 2% bigger than the previous
float m_ClustScale;
private static ComputeBuffer s_PerVoxelLightLists;
private static ComputeBuffer s_PerVoxelOffset;
private static ComputeBuffer s_PerTileLogBaseTweak;
private static ComputeBuffer s_GlobalLightListAtomic;
// clustered light list specific buffers and data end
private static int s_WidthOnRecord;
private static int s_HeightOnRecord;
Matrix4x4[] m_MatWorldToShadow = new Matrix4x4[k_MaxLights * k_MaxShadowmapPerLights];
Vector4[] m_DirShadowSplitSpheres = new Vector4[k_MaxDirectionalSplit];
Vector4[] m_Shadow3X3PCFTerms = new Vector4[4];
public const int MaxNumLights = 1024;
public const int MaxNumDirLights = 2;
public const float FltMax = 3.402823466e+38F;
const int k_MaxLights = 10;
const int k_MaxShadowmapPerLights = 6;
const int k_MaxDirectionalSplit = 4;
// Directional lights become spotlights at a far distance. This is the distance we pull back to set the spotlight origin.
const float k_DirectionalLightPullbackDistance = 10000.0f;
[NonSerialized]
private TextureCache2D m_CookieTexArray;
private TextureCacheCubemap m_CubeCookieTexArray;
private TextureCacheCubemap m_CubeReflTexArray;
private SkyboxHelper m_SkyboxHelper;
private Material m_BlitMaterial;
private Material m_DebugLightBoundsMaterial;
public void Cleanup()
{
if (m_DeferredMaterial) DestroyImmediate(m_DeferredMaterial);
if (m_DeferredReflectionMaterial) DestroyImmediate(m_DeferredReflectionMaterial);
if (m_BlitMaterial) DestroyImmediate(m_BlitMaterial);
if (m_DebugLightBoundsMaterial) DestroyImmediate(m_DebugLightBoundsMaterial);
m_CookieTexArray.Release();
m_CubeCookieTexArray.Release();
m_CubeReflTexArray.Release();
s_AABBBoundsBuffer.Release();
s_ConvexBoundsBuffer.Release();
s_LightDataBuffer.Release();
s_LightIndices.Release();
ReleaseResolutionDependentBuffers();
s_DirLightList.Release();
if (enableClustered)
{
if (s_GlobalLightListAtomic != null)
s_GlobalLightListAtomic.Release();
}
ClearComputeBuffers();
DeinitShadowSystem();
}
void ClearComputeBuffers()
{
if (s_AABBBoundsBuffer != null)
s_AABBBoundsBuffer.Release();
if (s_ConvexBoundsBuffer != null)
s_ConvexBoundsBuffer.Release();
if (s_LightDataBuffer != null)
s_LightDataBuffer.Release();
if (s_LightIndices != null)
s_LightIndices.Release();
ReleaseResolutionDependentBuffers();
if (s_DirLightList != null)
s_DirLightList.Release();
if (enableClustered)
{
if (s_GlobalLightListAtomic != null)
s_GlobalLightListAtomic.Release();
}
}
public void Build()
{
s_GBufferAlbedo = Shader.PropertyToID("_CameraGBufferTexture0");
s_GBufferSpecRough = Shader.PropertyToID("_CameraGBufferTexture1");
s_GBufferNormal = Shader.PropertyToID("_CameraGBufferTexture2");
s_GBufferEmission = Shader.PropertyToID("_CameraGBufferTexture3");
s_GBufferZ = Shader.PropertyToID("_CameraGBufferZ"); // used while rendering into G-buffer+
s_CameraDepthTexture = Shader.PropertyToID("_CameraDepthTexture"); // copy of that for later sampling in shaders
s_CameraTarget = Shader.PropertyToID("_CameraTarget");
m_DeferredMaterial = new Material(deferredShader);
m_DeferredReflectionMaterial = new Material(deferredReflectionShader);
m_DeferredMaterial.hideFlags = HideFlags.HideAndDontSave;
m_DeferredReflectionMaterial.hideFlags = HideFlags.HideAndDontSave;
s_GenAABBKernel = buildScreenAABBShader.FindKernel("ScreenBoundsAABB");
s_GenListPerTileKernel = buildPerTileLightListShader.FindKernel(enableBigTilePrepass ? "TileLightListGen_SrcBigTile" : "TileLightListGen");
s_AABBBoundsBuffer = new ComputeBuffer(2 * MaxNumLights, 3 * sizeof(float));
s_ConvexBoundsBuffer = new ComputeBuffer(MaxNumLights, System.Runtime.InteropServices.Marshal.SizeOf(typeof(SFiniteLightBound)));
s_LightDataBuffer = new ComputeBuffer(MaxNumLights, System.Runtime.InteropServices.Marshal.SizeOf(typeof(SFiniteLightData)));
s_DirLightList = new ComputeBuffer(MaxNumDirLights, System.Runtime.InteropServices.Marshal.SizeOf(typeof(DirectionalLight)));
s_LightIndices = null; // only used in traditional forward, will be created on demand
buildScreenAABBShader.SetBuffer(s_GenAABBKernel, "g_data", s_ConvexBoundsBuffer);
//m_BuildScreenAABBShader.SetBuffer(kGenAABBKernel, "g_vBoundsBuffer", m_aabbBoundsBuffer);
m_DeferredMaterial.SetBuffer("g_vLightData", s_LightDataBuffer);
m_DeferredMaterial.SetBuffer("g_dirLightData", s_DirLightList);
m_DeferredReflectionMaterial.SetBuffer("g_vLightData", s_LightDataBuffer);
buildPerTileLightListShader.SetBuffer(s_GenListPerTileKernel, "g_vBoundsBuffer", s_AABBBoundsBuffer);
buildPerTileLightListShader.SetBuffer(s_GenListPerTileKernel, "g_vLightData", s_LightDataBuffer);
buildPerTileLightListShader.SetBuffer(s_GenListPerTileKernel, "g_data", s_ConvexBoundsBuffer);
if (enableClustered)
{
var kernelName = enableBigTilePrepass ? (k_UseDepthBuffer ? "TileLightListGen_DepthRT_SrcBigTile" : "TileLightListGen_NoDepthRT_SrcBigTile") : (k_UseDepthBuffer ? "TileLightListGen_DepthRT" : "TileLightListGen_NoDepthRT");
s_GenListPerVoxelKernel = buildPerVoxelLightListShader.FindKernel(kernelName);
s_ClearVoxelAtomicKernel = buildPerVoxelLightListShader.FindKernel("ClearAtomic");
buildPerVoxelLightListShader.SetBuffer(s_GenListPerVoxelKernel, "g_vBoundsBuffer", s_AABBBoundsBuffer);
buildPerVoxelLightListShader.SetBuffer(s_GenListPerVoxelKernel, "g_vLightData", s_LightDataBuffer);
buildPerVoxelLightListShader.SetBuffer(s_GenListPerVoxelKernel, "g_data", s_ConvexBoundsBuffer);
s_GlobalLightListAtomic = new ComputeBuffer(1, sizeof(uint));
}
if (enableBigTilePrepass)
{
s_GenListPerBigTileKernel = buildPerBigTileLightListShader.FindKernel("BigTileLightListGen");
buildPerBigTileLightListShader.SetBuffer(s_GenListPerBigTileKernel, "g_vBoundsBuffer", s_AABBBoundsBuffer);
buildPerBigTileLightListShader.SetBuffer(s_GenListPerBigTileKernel, "g_vLightData", s_LightDataBuffer);
buildPerBigTileLightListShader.SetBuffer(s_GenListPerBigTileKernel, "g_data", s_ConvexBoundsBuffer);
}
m_CookieTexArray = new TextureCache2D();
m_CubeCookieTexArray = new TextureCacheCubemap();
m_CubeReflTexArray = new TextureCacheCubemap();
m_CookieTexArray.AllocTextureArray(8, m_TextureSettings.spotCookieSize, m_TextureSettings.spotCookieSize, TextureFormat.RGBA32, true);
m_CubeCookieTexArray.AllocTextureArray(4, m_TextureSettings.pointCookieSize, TextureFormat.RGBA32, true);
m_CubeReflTexArray.AllocTextureArray(64, m_TextureSettings.reflectionCubemapSize, TextureCache.GetPreferredHDRCompressedTextureFormat, true);
//m_DeferredMaterial.SetTexture("_spotCookieTextures", m_cookieTexArray.GetTexCache());
//m_DeferredMaterial.SetTexture("_pointCookieTextures", m_cubeCookieTexArray.GetTexCache());
//m_DeferredReflectionMaterial.SetTexture("_reflCubeTextures", m_cubeReflTexArray.GetTexCache());
m_MatWorldToShadow = new Matrix4x4[k_MaxLights * k_MaxShadowmapPerLights];
m_DirShadowSplitSpheres = new Vector4[k_MaxDirectionalSplit];
m_Shadow3X3PCFTerms = new Vector4[4];
InitShadowSystem(m_ShadowSettings);
m_SkyboxHelper = new SkyboxHelper();
m_SkyboxHelper.CreateMesh();
m_BlitMaterial = new Material(finalPassShader) { hideFlags = HideFlags.HideAndDontSave };
m_DebugLightBoundsMaterial = new Material(debugLightBoundsShader) { hideFlags = HideFlags.HideAndDontSave };
s_LightList = null;
s_BigTileLightList = null;
}
static void SetupGBuffer(int width, int height, CommandBuffer cmd)
{
var format10 = RenderTextureFormat.ARGB32;
if (SystemInfo.SupportsRenderTextureFormat(RenderTextureFormat.ARGB2101010))
format10 = RenderTextureFormat.ARGB2101010;
var formatHDR = RenderTextureFormat.DefaultHDR;
//@TODO: cleanup, right now only because we want to use unmodified Standard shader that encodes emission differently based on HDR or not,
// so we make it think we always render in HDR
cmd.EnableShaderKeyword("UNITY_HDR_ON");
//@TODO: GetGraphicsCaps().buggyMRTSRGBWriteFlag
cmd.GetTemporaryRT(s_GBufferAlbedo, width, height, 0, FilterMode.Point, RenderTextureFormat.ARGB32, RenderTextureReadWrite.Default);
cmd.GetTemporaryRT(s_GBufferSpecRough, width, height, 0, FilterMode.Point, RenderTextureFormat.ARGB32, RenderTextureReadWrite.Default);
cmd.GetTemporaryRT(s_GBufferNormal, width, height, 0, FilterMode.Point, format10, RenderTextureReadWrite.Linear);
cmd.GetTemporaryRT(s_GBufferEmission, width, height, 0, FilterMode.Point, formatHDR, RenderTextureReadWrite.Linear);
cmd.GetTemporaryRT(s_GBufferZ, width, height, 24, FilterMode.Point, RenderTextureFormat.Depth);
cmd.GetTemporaryRT(s_CameraDepthTexture, width, height, 24, FilterMode.Point, RenderTextureFormat.Depth);
cmd.GetTemporaryRT(s_CameraTarget, width, height, 0, FilterMode.Point, formatHDR, RenderTextureReadWrite.Default);
var colorMRTs = new RenderTargetIdentifier[4] { s_GBufferAlbedo, s_GBufferSpecRough, s_GBufferNormal, s_GBufferEmission };
cmd.SetRenderTarget(colorMRTs, new RenderTargetIdentifier(s_GBufferZ));
cmd.ClearRenderTarget(true, true, new Color(0, 0, 0, 0));
//@TODO: render VR occlusion mesh
}
static void RenderGBuffer(CullResults cull, Camera camera, ScriptableRenderContext loop)
{
// setup GBuffer for rendering
var cmd = CommandBufferPool.Get ("Create G-Buffer");
SetupGBuffer(camera.pixelWidth, camera.pixelHeight, cmd);
loop.ExecuteCommandBuffer(cmd);
CommandBufferPool.Release(cmd);
// render opaque objects using Deferred pass
var drawSettings = new DrawRendererSettings(camera, new ShaderPassName("Deferred"))
{
sorting = { flags = SortFlags.CommonOpaque },
//@TODO: need to get light probes + LPPV too?
rendererConfiguration = RendererConfiguration.PerObjectLightmaps | RendererConfiguration.PerObjectLightProbe | RendererConfiguration.ProvideLightIndices | RendererConfiguration.ProvideReflectionProbeIndices
};
var filterSettings = new FilterRenderersSettings(true){renderQueueRange = RenderQueueRange.opaque};
loop.DrawRenderers(cull.visibleRenderers, ref drawSettings, filterSettings);
}
void RenderForward(CullResults cull, Camera camera, ScriptableRenderContext loop, bool opaquesOnly)
{
var cmd = CommandBufferPool.Get(opaquesOnly ? "Prep Opaques Only Forward Pass" : "Prep Forward Pass" );
bool useFptl = opaquesOnly && usingFptl; // requires depth pre-pass for forward opaques!
bool haveTiledSolution = opaquesOnly || enableClustered;
cmd.EnableShaderKeyword(haveTiledSolution ? "TILED_FORWARD" : "REGULAR_FORWARD");
cmd.SetViewProjectionMatrices(camera.worldToCameraMatrix, camera.projectionMatrix);
cmd.SetGlobalFloat("g_isOpaquesOnlyEnabled", useFptl ? 1 : 0); // leaving this as a dynamic toggle for now for forward opaques to keep shader variants down.
cmd.SetGlobalBuffer("g_vLightListGlobal", useFptl ? s_LightList : s_PerVoxelLightLists);
cmd.SetGlobalBuffer("g_vLightListMeshInst", s_LightIndices);
loop.ExecuteCommandBuffer(cmd);
CommandBufferPool.Release(cmd);
// render opaque objects using Deferred pass
var drawSettings = new DrawRendererSettings(camera, new ShaderPassName("ForwardSinglePass"))
{
sorting = { flags = opaquesOnly ? SortFlags.CommonOpaque : SortFlags.CommonTransparent },
rendererConfiguration = RendererConfiguration.PerObjectLightmaps | RendererConfiguration.PerObjectLightProbe | RendererConfiguration.ProvideLightIndices | RendererConfiguration.ProvideReflectionProbeIndices
};
var filterSettings = new FilterRenderersSettings(true) { renderQueueRange = opaquesOnly ? RenderQueueRange.opaque : RenderQueueRange.transparent };
loop.DrawRenderers(cull.visibleRenderers, ref drawSettings, filterSettings);
}
static void DepthOnlyForForwardOpaques(CullResults cull, Camera camera, ScriptableRenderContext loop)
{
var cmd = CommandBufferPool.Get("Forward Opaques - Depth Only" );
cmd.SetRenderTarget(new RenderTargetIdentifier(s_GBufferZ));
loop.ExecuteCommandBuffer(cmd);
CommandBufferPool.Release(cmd);
// render opaque objects using Deferred pass
var drawSettings = new DrawRendererSettings(camera, new ShaderPassName("DepthOnly"))
{
sorting = { flags = SortFlags.CommonOpaque }
};
var filterSettings = new FilterRenderersSettings(true) {};
filterSettings.renderQueueRange = RenderQueueRange.opaque;
loop.DrawRenderers(cull.visibleRenderers, ref drawSettings, filterSettings);
}
bool usingFptl
{
get
{
bool isEnabledMSAA = false;
Debug.Assert(!isEnabledMSAA || enableClustered);
bool disableFptl = (disableFptlWhenClustered && enableClustered) || isEnabledMSAA;
return !disableFptl;
}
}
static void CopyDepthAfterGBuffer(ScriptableRenderContext loop)
{
var cmd = CommandBufferPool.Get("Copy depth");
cmd.CopyTexture(new RenderTargetIdentifier(s_GBufferZ), new RenderTargetIdentifier(s_CameraDepthTexture));
loop.ExecuteCommandBuffer(cmd);
CommandBufferPool.Release(cmd);
}
void DoTiledDeferredLighting(Camera camera, ScriptableRenderContext loop, int numLights, int numDirLights)
{
var bUseClusteredForDeferred = !usingFptl;
var cmd = CommandBufferPool.Get();
m_DeferredMaterial.EnableKeyword(bUseClusteredForDeferred ? "USE_CLUSTERED_LIGHTLIST" : "USE_FPTL_LIGHTLIST");
m_DeferredReflectionMaterial.EnableKeyword(bUseClusteredForDeferred ? "USE_CLUSTERED_LIGHTLIST" : "USE_FPTL_LIGHTLIST");
if (enableDrawTileDebug)
{
m_DeferredMaterial.EnableKeyword("ENABLE_DEBUG");
}
else
{
m_DeferredMaterial.DisableKeyword("ENABLE_DEBUG");
}
if (enableReflectionProbeDebug)
{
m_DeferredReflectionMaterial.EnableKeyword("ENABLE_DEBUG");
}
else
{
m_DeferredReflectionMaterial.DisableKeyword("ENABLE_DEBUG");
}
cmd.SetGlobalBuffer("g_vLightListGlobal", bUseClusteredForDeferred ? s_PerVoxelLightLists : s_LightList); // opaques list (unless MSAA possibly)
// In case of bUseClusteredForDeferred disable toggle option since we're using m_perVoxelLightLists as opposed to lightList
if (bUseClusteredForDeferred)
{
cmd.SetGlobalFloat("g_isOpaquesOnlyEnabled", 0);
}
cmd.name = "DoTiledDeferredLighting";
//cmd.SetRenderTarget(new RenderTargetIdentifier(kGBufferEmission), new RenderTargetIdentifier(kGBufferZ));
//cmd.Blit (kGBufferNormal, (RenderTexture)null); // debug: display normals
cmd.Blit(BuiltinRenderTextureType.CameraTarget, s_CameraTarget, m_DeferredMaterial, 0);
cmd.Blit(BuiltinRenderTextureType.CameraTarget, s_CameraTarget, m_DeferredReflectionMaterial, 0);
// Set the intermediate target for compositing (skybox, etc)
cmd.SetRenderTarget(new RenderTargetIdentifier(s_CameraTarget), new RenderTargetIdentifier(s_CameraDepthTexture));
loop.ExecuteCommandBuffer(cmd);
CommandBufferPool.Release(cmd);
}
static Matrix4x4 GetFlipMatrix()
{
Matrix4x4 flip = Matrix4x4.identity;
bool isLeftHand = ((int)LightDefinitions.USE_LEFTHAND_CAMERASPACE) != 0;
if (isLeftHand) flip.SetColumn(2, new Vector4(0.0f, 0.0f, -1.0f, 0.0f));
return flip;
}
static Matrix4x4 WorldToCamera(Camera camera)
{
return GetFlipMatrix() * camera.worldToCameraMatrix;
}
static Matrix4x4 CameraToWorld(Camera camera)
{
return camera.cameraToWorldMatrix * GetFlipMatrix();
}
static Matrix4x4 CameraProjection(Camera camera)
{
return camera.projectionMatrix * GetFlipMatrix();
}
static int UpdateDirectionalLights(Camera camera, IList<VisibleLight> visibleLights, Dictionary<int,int> shadowIndices)
{
var dirLightCount = 0;
var lights = new List<DirectionalLight>();
var worldToView = WorldToCamera(camera);
for (int nLight = 0; nLight < visibleLights.Count; nLight++)
{
var light = visibleLights[nLight];
if (light.lightType == LightType.Directional)
{
Debug.Assert(dirLightCount < MaxNumDirLights, "Too many directional lights.");
var l = new DirectionalLight();
var lightToWorld = light.localToWorld;
Vector3 lightDir = lightToWorld.GetColumn(2); // Z axis in world space
// represents a left hand coordinate system in world space
Vector3 vx = lightToWorld.GetColumn(0); // X axis in world space
Vector3 vy = lightToWorld.GetColumn(1); // Y axis in world space
var vz = lightDir; // Z axis in world space
vx = worldToView.MultiplyVector(vx);
vy = worldToView.MultiplyVector(vy);
vz = worldToView.MultiplyVector(vz);
int shadowIdx;
l.shadowLightIndex = shadowIndices.TryGetValue((int)nLight, out shadowIdx) ? (uint)shadowIdx : 0x80000000;
l.lightAxisX = vx;
l.lightAxisY = vy;
l.lightAxisZ = vz;
l.color.Set(light.finalColor.r, light.finalColor.g, light.finalColor.b);
l.intensity = light.light.intensity;
lights.Add(l);
dirLightCount++;
}
}
s_DirLightList.SetData(lights);
return dirLightCount;
}
int GenerateSourceLightBuffers(CommandBuffer cmd, Camera camera, CullResults inputs)
{
// 0. deal with shadows
{
m_FrameId.frameCount++;
// get the indices for all lights that want to have shadows
m_ShadowRequests.Clear();
m_ShadowRequests.Capacity = inputs.visibleLights.Count;
int lcnt = inputs.visibleLights.Count;
for (int i = 0; i < lcnt; ++i)
{
VisibleLight vl = inputs.visibleLights[i];
AdditionalShadowData asd = vl.light.GetComponent<AdditionalShadowData>();
if (vl.light.shadows != LightShadows.None && asd != null && asd.shadowDimmer > 0.0f)
m_ShadowRequests.Add(i);
}
// pass this list to a routine that assigns shadows based on some heuristic
uint shadowRequestCount = (uint)m_ShadowRequests.Count;
int[] shadowRequests = m_ShadowRequests.ToArray();
int[] shadowDataIndices;
m_ShadowMgr.ProcessShadowRequests(m_FrameId, inputs, camera, false, inputs.visibleLights,
ref shadowRequestCount, shadowRequests, out shadowDataIndices);
// update the visibleLights with the shadow information
m_ShadowIndices.Clear();
for (uint i = 0; i < shadowRequestCount; i++)
{
m_ShadowIndices.Add(shadowRequests[i], shadowDataIndices[i]);
}
}
var probes = inputs.visibleReflectionProbes;
//ReflectionProbe[] probes = Object.FindObjectsOfType<ReflectionProbe>();
var numModels = (int)LightDefinitions.NR_LIGHT_MODELS;
var numVolTypes = (int)LightDefinitions.MAX_TYPES;
var numEntries = new int[numModels, numVolTypes];
var offsets = new int[numModels, numVolTypes];
var numEntries2nd = new int[numModels, numVolTypes];
// first pass. Figure out how much we have of each and establish offsets
foreach (var cl in inputs.visibleLights)
{
var volType = cl.lightType == LightType.Spot ? LightDefinitions.SPOT_LIGHT : (cl.lightType == LightType.Point ? LightDefinitions.SPHERE_LIGHT : -1);
if (volType >= 0) ++numEntries[LightDefinitions.DIRECT_LIGHT, volType];
}
foreach (var rl in probes)
{
var volType = LightDefinitions.BOX_LIGHT; // always a box for now
if (rl.texture != null) ++numEntries[LightDefinitions.REFLECTION_LIGHT, volType];
}
// add decals here too similar to the above
// establish offsets
for (var m = 0; m < numModels; m++)
{
offsets[m, 0] = m == 0 ? 0 : (numEntries[m - 1, numVolTypes - 1] + offsets[m - 1, numVolTypes - 1]);
for (var v = 1; v < numVolTypes; v++) offsets[m, v] = numEntries[m, v - 1] + offsets[m, v - 1];
}
var numLights = inputs.visibleLights.Count;
var numProbes = probes.Count;
var numVolumes = numLights + numProbes;
var lightData = new SFiniteLightData[numVolumes];
var boundData = new SFiniteLightBound[numVolumes];
var worldToView = WorldToCamera(camera);
var lightIndexMap = inputs.GetLightIndexMap();
for (int i = 0; i < lightIndexMap.Length; i++)
{
lightIndexMap[i] = -1;
}
int lightIndexCount = inputs.GetLightIndicesCount();
if (s_LightIndices == null || lightIndexCount > s_LightIndices.count)
{
// The light indices buffer is too small, resize
if (s_LightIndices != null)
s_LightIndices.Release();
s_LightIndices = new ComputeBuffer(lightIndexCount, System.Runtime.InteropServices.Marshal.SizeOf(typeof(int)));
}
uint shadowLightIndex = 0;
uint lightIndex = 0;
foreach (var cl in inputs.visibleLights)
{
var range = cl.range;
var lightToWorld = cl.localToWorld;
Vector3 lightPos = lightToWorld.GetColumn(3);
var bound = new SFiniteLightBound();
var light = new SFiniteLightData();
bound.boxAxisX.Set(1, 0, 0);
bound.boxAxisY.Set(0, 1, 0);
bound.boxAxisZ.Set(0, 0, 1);
bound.scaleXY.Set(1.0f, 1.0f);
bound.radius = range;
light.flags = 0;
light.recipRange = 1.0f / range;
light.color.Set(cl.finalColor.r, cl.finalColor.g, cl.finalColor.b);
light.sliceIndex = 0;
light.lightModel = (uint)LightDefinitions.DIRECT_LIGHT;
int shadowIdx;
light.shadowLightIndex = m_ShadowIndices.TryGetValue( (int) shadowLightIndex, out shadowIdx ) ? (uint) shadowIdx : 0x80000000;
shadowLightIndex++;
var bHasCookie = cl.light.cookie != null;
var bHasShadow = cl.light.shadows != LightShadows.None;
var idxOut = 0;
if (cl.lightType == LightType.Spot)
{
var isCircularSpot = !bHasCookie;
if (!isCircularSpot) // square spots always have cookie
{
light.sliceIndex = m_CookieTexArray.FetchSlice(cmd, cl.light.cookie);
}
Vector3 lightDir = lightToWorld.GetColumn(2); // Z axis in world space
// represents a left hand coordinate system in world space
Vector3 vx = lightToWorld.GetColumn(0); // X axis in world space
Vector3 vy = lightToWorld.GetColumn(1); // Y axis in world space
var vz = lightDir; // Z axis in world space
// transform to camera space (becomes a left hand coordinate frame in Unity since Determinant(worldToView)<0)
vx = worldToView.MultiplyVector(vx);
vy = worldToView.MultiplyVector(vy);
vz = worldToView.MultiplyVector(vz);
const float pi = 3.1415926535897932384626433832795f;
const float degToRad = (float)(pi / 180.0);
var sa = cl.light.spotAngle;
var cs = Mathf.Cos(0.5f * sa * degToRad);
var si = Mathf.Sin(0.5f * sa * degToRad);
var ta = cs > 0.0f ? (si / cs) : FltMax;
var cota = si > 0.0f ? (cs / si) : FltMax;
//const float cotasa = l.GetCotanHalfSpotAngle();
// apply nonuniform scale to OBB of spot light
var squeeze = true;//sa < 0.7f * 90.0f; // arb heuristic
var fS = squeeze ? ta : si;
bound.center = worldToView.MultiplyPoint(lightPos + ((0.5f * range) * lightDir)); // use mid point of the spot as the center of the bounding volume for building screen-space AABB for tiled lighting.
light.lightAxisX = vx;
light.lightAxisY = vy;
light.lightAxisZ = vz;
// scale axis to match box or base of pyramid
bound.boxAxisX = (fS * range) * vx;
bound.boxAxisY = (fS * range) * vy;
bound.boxAxisZ = (0.5f * range) * vz;
// generate bounding sphere radius
var fAltDx = si;
var fAltDy = cs;
fAltDy = fAltDy - 0.5f;
//if(fAltDy<0) fAltDy=-fAltDy;
fAltDx *= range; fAltDy *= range;
var altDist = Mathf.Sqrt(fAltDy * fAltDy + (isCircularSpot ? 1.0f : 2.0f) * fAltDx * fAltDx);
bound.radius = altDist > (0.5f * range) ? altDist : (0.5f * range); // will always pick fAltDist
bound.scaleXY = squeeze ? new Vector2(0.01f, 0.01f) : new Vector2(1.0f, 1.0f);
// fill up ldata
light.lightType = (uint)LightDefinitions.SPOT_LIGHT;
light.lightPos = worldToView.MultiplyPoint(lightPos);
light.radiusSq = range * range;
light.penumbra = cs;
light.cotan = cota;
light.flags |= (isCircularSpot ? LightDefinitions.IS_CIRCULAR_SPOT_SHAPE : 0);
light.flags |= (bHasCookie ? LightDefinitions.HAS_COOKIE_TEXTURE : 0);
light.flags |= (bHasShadow ? LightDefinitions.HAS_SHADOW : 0);
int i = LightDefinitions.DIRECT_LIGHT, j = LightDefinitions.SPOT_LIGHT;
idxOut = numEntries2nd[i, j] + offsets[i, j]; ++numEntries2nd[i, j];
}
else if (cl.lightType == LightType.Point)
{
if (bHasCookie)
{
light.sliceIndex = m_CubeCookieTexArray.FetchSlice(cmd, cl.light.cookie);
}
var lightToView = worldToView * lightToWorld;
Vector3 vx = lightToView.GetColumn(0);
Vector3 vy = lightToView.GetColumn(1);
Vector3 vz = lightToView.GetColumn(2);
bound.center = worldToView.MultiplyPoint(lightPos);
bound.boxAxisX = vx * range;
bound.boxAxisY = vy * range;
bound.boxAxisZ = vz * range;
bound.scaleXY.Set(1.0f, 1.0f);
bound.radius = range;
// fill up ldata
light.lightType = (uint)LightDefinitions.SPHERE_LIGHT;
light.lightPos = bound.center;
light.radiusSq = range * range;
light.lightAxisX = vx;
light.lightAxisY = vy;
light.lightAxisZ = vz;
light.flags |= (bHasCookie ? LightDefinitions.HAS_COOKIE_TEXTURE : 0);
light.flags |= (bHasShadow ? LightDefinitions.HAS_SHADOW : 0);
int i = LightDefinitions.DIRECT_LIGHT, j = LightDefinitions.SPHERE_LIGHT;
idxOut = numEntries2nd[i, j] + offsets[i, j]; ++numEntries2nd[i, j];
}
else
{
//Assert(false);
}
// next light
if (cl.lightType == LightType.Spot || cl.lightType == LightType.Point)
{
boundData[idxOut] = bound;
lightData[idxOut] = light;
lightIndexMap[lightIndex] = idxOut;
}
lightIndex++;
}
int numLightsOut = 0;
for(int v=0; v<numVolTypes; v++) numLightsOut += numEntries[LightDefinitions.DIRECT_LIGHT, v];
// probe.m_BlendDistance
// Vector3f extents = 0.5*Abs(probe.m_BoxSize);
// C center of rendered refl box <-- GetComponent (Transform).GetPosition() + m_BoxOffset;
// cube map capture point: GetComponent (Transform).GetPosition()
// shader parameter min and max are C+/-(extents+blendDistance)
foreach (var rl in probes)
{
var cubemap = rl.texture;
// always a box for now
if (cubemap == null)
continue;
var bndData = new SFiniteLightBound();
var lgtData = new SFiniteLightData();
var idxOut = 0;
lgtData.flags = 0;
var bnds = rl.bounds;
var boxOffset = rl.center; // reflection volume offset relative to cube map capture point
var blendDistance = rl.blendDistance;
var mat = rl.localToWorld;
// implicit in CalculateHDRDecodeValues() --> float ints = rl.intensity;
var boxProj = (rl.boxProjection != 0);
var decodeVals = rl.hdr;
//Vector4 decodeVals = rl.CalculateHDRDecodeValues();
// C is reflection volume center in world space (NOT same as cube map capture point)
var e = bnds.extents; // 0.5f * Vector3.Max(-boxSizes[p], boxSizes[p]);
//Vector3 C = bnds.center; // P + boxOffset;
var C = mat.MultiplyPoint(boxOffset); // same as commented out line above when rot is identity
var combinedExtent = e + new Vector3(blendDistance, blendDistance, blendDistance);
Vector3 vx = mat.GetColumn(0);
Vector3 vy = mat.GetColumn(1);
Vector3 vz = mat.GetColumn(2);
// transform to camera space (becomes a left hand coordinate frame in Unity since Determinant(worldToView)<0)
vx = worldToView.MultiplyVector(vx);
vy = worldToView.MultiplyVector(vy);
vz = worldToView.MultiplyVector(vz);
var Cw = worldToView.MultiplyPoint(C);
if (boxProj) lgtData.flags |= LightDefinitions.IS_BOX_PROJECTED;
lgtData.lightPos = Cw;
lgtData.lightAxisX = vx;
lgtData.lightAxisY = vy;
lgtData.lightAxisZ = vz;
lgtData.localCubeCapturePoint = -boxOffset;
lgtData.probeBlendDistance = blendDistance;
lgtData.lightIntensity = decodeVals.x;
lgtData.decodeExp = decodeVals.y;
lgtData.sliceIndex = m_CubeReflTexArray.FetchSlice(cmd, cubemap);
var delta = combinedExtent - e;
lgtData.boxInnerDist = e;
lgtData.boxInvRange.Set(1.0f / delta.x, 1.0f / delta.y, 1.0f / delta.z);
bndData.center = Cw;
bndData.boxAxisX = combinedExtent.x * vx;
bndData.boxAxisY = combinedExtent.y * vy;
bndData.boxAxisZ = combinedExtent.z * vz;
bndData.scaleXY.Set(1.0f, 1.0f);
bndData.radius = combinedExtent.magnitude;
// fill up ldata
lgtData.lightType = (uint)LightDefinitions.BOX_LIGHT;
lgtData.lightModel = (uint)LightDefinitions.REFLECTION_LIGHT;
int i = LightDefinitions.REFLECTION_LIGHT, j = LightDefinitions.BOX_LIGHT;
idxOut = numEntries2nd[i, j] + offsets[i, j]; ++numEntries2nd[i, j];
boundData[idxOut] = bndData;
lightData[idxOut] = lgtData;
lightIndexMap[lightIndex] = idxOut;
lightIndex++;
}
inputs.SetLightIndexMap(lightIndexMap);
int numProbesOut = 0;
for(int v=0; v<numVolTypes; v++) numProbesOut += numEntries[LightDefinitions.REFLECTION_LIGHT, v];
for (var m = 0; m < numModels; m++)
{
for (var v = 0; v < numVolTypes; v++)
Debug.Assert(numEntries[m, v] == numEntries2nd[m, v], "count mismatch on second pass!");
}
s_ConvexBoundsBuffer.SetData(boundData);
s_LightDataBuffer.SetData(lightData);
inputs.FillLightIndices(s_LightIndices);
return numLightsOut + numProbesOut;
}
CullResults m_CullResults;
public void Render(ScriptableRenderContext renderContext, IEnumerable<Camera> cameras)
{
foreach (var camera in cameras)
{
ScriptableCullingParameters cullingParams;
if (!CullResults.GetCullingParameters(camera, out cullingParams))
continue;
m_ShadowMgr.UpdateCullingParameters( ref cullingParams );
CullResults.Cull(ref cullingParams, renderContext, ref m_CullResults);
ExecuteRenderLoop(camera, m_CullResults, renderContext);
}
renderContext.Submit();
}
void FinalPass(ScriptableRenderContext loop)
{
var cmd = CommandBufferPool.Get("FinalPass");
cmd.Blit(s_CameraTarget, BuiltinRenderTextureType.CameraTarget, m_BlitMaterial, 0);
loop.ExecuteCommandBuffer(cmd);
CommandBufferPool.Release(cmd);
}
void ExecuteRenderLoop(Camera camera, CullResults cullResults, ScriptableRenderContext loop)
{
var w = camera.pixelWidth;
var h = camera.pixelHeight;
ResizeIfNecessary(w, h);
// do anything we need to do upon a new frame.
NewFrame();
// generate g-buffer before shadows to leverage async compute
// forward opaques just write to depth.
loop.SetupCameraProperties(camera);
RenderGBuffer(cullResults, camera, loop);
DepthOnlyForForwardOpaques(cullResults, camera, loop);
CopyDepthAfterGBuffer(loop);
// camera to screen matrix (and it's inverse)
var proj = CameraProjection(camera);
var temp = new Matrix4x4();
temp.SetRow(0, new Vector4(0.5f * w, 0.0f, 0.0f, 0.5f * w));
temp.SetRow(1, new Vector4(0.0f, 0.5f * h, 0.0f, 0.5f * h));
temp.SetRow(2, new Vector4(0.0f, 0.0f, 0.5f, 0.5f));
temp.SetRow(3, new Vector4(0.0f, 0.0f, 0.0f, 1.0f));
var projscr = temp * proj;
var invProjscr = projscr.inverse;
// build per tile light lists
CommandBuffer cmdGenerateLightBuffers = CommandBufferPool.Get();
var numLights = GenerateSourceLightBuffers(cmdGenerateLightBuffers, camera, cullResults);
loop.ExecuteCommandBuffer(cmdGenerateLightBuffers);
CommandBufferPool.Release(cmdGenerateLightBuffers);
GPUFence postLightListFence;
if (k_UseAsyncCompute)
{
CommandBuffer cmdPreShadows = CommandBufferPool.Get();
GPUFence preShadowsFence = cmdPreShadows.CreateGPUFence();
loop.ExecuteCommandBuffer(cmdPreShadows);
CommandBufferPool.Release(cmdPreShadows);
postLightListFence = BuildPerTileLightListsAsync(camera, loop, numLights, projscr, invProjscr, preShadowsFence);
}
else
{
#pragma warning disable 0162
BuildPerTileLightLists(camera, loop, numLights, projscr, invProjscr);
#pragma warning restore 0162
}
CommandBuffer cmdShadow = CommandBufferPool.Get();
m_ShadowMgr.RenderShadows( m_FrameId, loop, cmdShadow, cullResults, cullResults.visibleLights );
m_ShadowMgr.SyncData();
m_ShadowMgr.BindResources( cmdShadow, null, 0 );
loop.ExecuteCommandBuffer(cmdShadow);
CommandBufferPool.Release(cmdShadow);
// Push all global params
var numDirLights = UpdateDirectionalLights(camera, cullResults.visibleLights, m_ShadowIndices);
if (k_UseAsyncCompute)
{
PushGlobalParamsWithFence(camera, loop, CameraToWorld(camera), projscr, invProjscr, numDirLights, postLightListFence);
}
else
{
#pragma warning disable 0162
PushGlobalParams(camera, loop, CameraToWorld(camera), projscr, invProjscr, numDirLights);
#pragma warning restore 0162
}
// do deferred lighting
DoTiledDeferredLighting(camera, loop, numLights, numDirLights);
// render opaques using tiled forward
RenderForward(cullResults, camera, loop, true); // opaques only (requires a depth pre-pass)
// render the backdrop/canvas
m_SkyboxHelper.Draw(loop, camera);
// transparencies atm. requires clustered until we get traditional forward
if (enableClustered) RenderForward(cullResults, camera, loop, false);
// debug views.
if (enableDrawLightBoundsDebug) DrawLightBoundsDebug(loop, cullResults.visibleLights.Count);
// present frame buffer.
FinalPass(loop);
// bind depth surface for editor grid/gizmo/selection rendering
if (camera.cameraType == CameraType.SceneView)
{
var cmd = CommandBufferPool.Get();
cmd.SetRenderTarget(BuiltinRenderTextureType.CameraTarget, new RenderTargetIdentifier(s_CameraDepthTexture));
loop.ExecuteCommandBuffer(cmd);
CommandBufferPool.Release(cmd);
}
loop.Submit();
}
void DrawLightBoundsDebug(ScriptableRenderContext loop, int numLights)
{
var cmd = CommandBufferPool.Get("DrawLightBoundsDebug");
m_DebugLightBoundsMaterial.SetBuffer("g_data", s_ConvexBoundsBuffer);
cmd.DrawProcedural(Matrix4x4.identity, m_DebugLightBoundsMaterial, 0, MeshTopology.Triangles, 12 * 3 * numLights);
loop.ExecuteCommandBuffer(cmd);
CommandBufferPool.Release(cmd);
}
void NewFrame()
{
// update texture caches
m_CookieTexArray.NewFrame();
m_CubeCookieTexArray.NewFrame();
m_CubeReflTexArray.NewFrame();
}
void RenderShadowMaps(CullResults cullResults, ScriptableRenderContext loop)
{
}
void ResizeIfNecessary(int curWidth, int curHeight)
{
if (curWidth != s_WidthOnRecord || curHeight != s_HeightOnRecord || s_LightList == null ||
(s_BigTileLightList == null && enableBigTilePrepass) || (s_PerVoxelLightLists == null && enableClustered))
{
if (s_WidthOnRecord > 0 && s_HeightOnRecord > 0)
ReleaseResolutionDependentBuffers();
AllocResolutionDependentBuffers(curWidth, curHeight);
// update recorded window resolution
s_WidthOnRecord = curWidth;
s_HeightOnRecord = curHeight;
}
}
void ReleaseResolutionDependentBuffers()
{
if (s_LightList != null)
s_LightList.Release();
if (enableClustered)
{
if (s_PerVoxelLightLists != null)
s_PerVoxelLightLists.Release();
if (s_PerVoxelOffset != null)
s_PerVoxelOffset.Release();
if (k_UseDepthBuffer && s_PerTileLogBaseTweak != null)
s_PerTileLogBaseTweak.Release();
}
if (enableBigTilePrepass)
{
if (s_BigTileLightList != null) s_BigTileLightList.Release();
}
}
int NumLightIndicesPerClusteredTile()
{
return 8 * (1 << k_Log2NumClusters); // total footprint for all layers of the tile (measured in light index entries)
}
void AllocResolutionDependentBuffers(int width, int height)
{
var nrTilesX = (width + 15) / 16;
var nrTilesY = (height + 15) / 16;
var nrTiles = nrTilesX * nrTilesY;
const int capacityUShortsPerTile = 32;
const int dwordsPerTile = (capacityUShortsPerTile + 1) >> 1; // room for 31 lights and a nrLights value.
s_LightList = new ComputeBuffer(LightDefinitions.NR_LIGHT_MODELS * dwordsPerTile * nrTiles, sizeof(uint)); // enough list memory for a 4k x 4k display
if (enableClustered)
{
var tileSizeClust = LightDefinitions.TILE_SIZE_CLUSTERED;
var nrTilesClustX = (width + (tileSizeClust - 1)) / tileSizeClust;
var nrTilesClustY = (height + (tileSizeClust - 1)) / tileSizeClust;
var nrTilesClust = nrTilesClustX * nrTilesClustY;
s_PerVoxelOffset = new ComputeBuffer(LightDefinitions.NR_LIGHT_MODELS * (1 << k_Log2NumClusters) * nrTilesClust, sizeof(uint));
s_PerVoxelLightLists = new ComputeBuffer(NumLightIndicesPerClusteredTile() * nrTilesClust, sizeof(uint));
if (k_UseDepthBuffer)
{
s_PerTileLogBaseTweak = new ComputeBuffer(nrTilesClust, sizeof(float));
}
}
if (enableBigTilePrepass)
{
var nrBigTilesX = (width + 63) / 64;
var nrBigTilesY = (height + 63) / 64;
var nrBigTiles = nrBigTilesX * nrBigTilesY;
s_BigTileLightList = new ComputeBuffer(LightDefinitions.MAX_NR_BIGTILE_LIGHTS_PLUSONE * nrBigTiles, sizeof(uint));
}
}
void VoxelLightListGeneration(CommandBuffer cmd, Camera camera, int numLights, Matrix4x4 projscr, Matrix4x4 invProjscr)
{
// clear atomic offset index
cmd.SetComputeBufferParam(buildPerVoxelLightListShader, s_ClearVoxelAtomicKernel, "g_LayeredSingleIdxBuffer", s_GlobalLightListAtomic);
cmd.DispatchCompute(buildPerVoxelLightListShader, s_ClearVoxelAtomicKernel, 1, 1, 1);
bool isOrthographic = camera.orthographic;
cmd.SetComputeIntParam(buildPerVoxelLightListShader, "g_isOrthographic", isOrthographic ? 1 : 0);
cmd.SetComputeIntParam(buildPerVoxelLightListShader, "g_iNrVisibLights", numLights);
cmd.SetComputeMatrixParam(buildPerVoxelLightListShader, "g_mScrProjection", projscr);
cmd.SetComputeMatrixParam(buildPerVoxelLightListShader, "g_mInvScrProjection", invProjscr);
cmd.SetComputeIntParam(buildPerVoxelLightListShader, "g_iLog2NumClusters", k_Log2NumClusters);
//Vector4 v2_near = invProjscr * new Vector4(0.0f, 0.0f, 0.0f, 1.0f);
//Vector4 v2_far = invProjscr * new Vector4(0.0f, 0.0f, 1.0f, 1.0f);
//float nearPlane2 = -(v2_near.z/v2_near.w);
//float farPlane2 = -(v2_far.z/v2_far.w);
var nearPlane = camera.nearClipPlane;
var farPlane = camera.farClipPlane;
cmd.SetComputeFloatParam(buildPerVoxelLightListShader, "g_fNearPlane", nearPlane);
cmd.SetComputeFloatParam(buildPerVoxelLightListShader, "g_fFarPlane", farPlane);
const float C = (float)(1 << k_Log2NumClusters);
var geomSeries = (1.0 - Mathf.Pow(k_ClustLogBase, C)) / (1 - k_ClustLogBase); // geometric series: sum_k=0^{C-1} base^k
m_ClustScale = (float)(geomSeries / (farPlane - nearPlane));
cmd.SetComputeFloatParam(buildPerVoxelLightListShader, "g_fClustScale", m_ClustScale);
cmd.SetComputeFloatParam(buildPerVoxelLightListShader, "g_fClustBase", k_ClustLogBase);
cmd.SetComputeTextureParam(buildPerVoxelLightListShader, s_GenListPerVoxelKernel, "g_depth_tex", new RenderTargetIdentifier(s_CameraDepthTexture));
cmd.SetComputeBufferParam(buildPerVoxelLightListShader, s_GenListPerVoxelKernel, "g_vLayeredLightList", s_PerVoxelLightLists);
cmd.SetComputeBufferParam(buildPerVoxelLightListShader, s_GenListPerVoxelKernel, "g_LayeredOffset", s_PerVoxelOffset);
cmd.SetComputeBufferParam(buildPerVoxelLightListShader, s_GenListPerVoxelKernel, "g_LayeredSingleIdxBuffer", s_GlobalLightListAtomic);
if (enableBigTilePrepass) cmd.SetComputeBufferParam(buildPerVoxelLightListShader, s_GenListPerVoxelKernel, "g_vBigTileLightList", s_BigTileLightList);
if (k_UseDepthBuffer)
{
cmd.SetComputeBufferParam(buildPerVoxelLightListShader, s_GenListPerVoxelKernel, "g_logBaseBuffer", s_PerTileLogBaseTweak);
}
var tileSizeClust = LightDefinitions.TILE_SIZE_CLUSTERED;
var nrTilesClustX = (camera.pixelWidth + (tileSizeClust - 1)) / tileSizeClust;
var nrTilesClustY = (camera.pixelHeight + (tileSizeClust - 1)) / tileSizeClust;
cmd.DispatchCompute(buildPerVoxelLightListShader, s_GenListPerVoxelKernel, nrTilesClustX, nrTilesClustY, 1);
}
void BuildPerTileLightLists(Camera camera, ScriptableRenderContext loop, int numLights, Matrix4x4 projscr, Matrix4x4 invProjscr)
{
var cmd = CommandBufferPool.Get("Build light list");
BuildPerTileLightListsCommon(camera, loop, numLights, projscr, invProjscr, cmd);
loop.ExecuteCommandBuffer(cmd);
CommandBufferPool.Release(cmd);
}
GPUFence BuildPerTileLightListsAsync(Camera camera, ScriptableRenderContext loop, int numLights, Matrix4x4 projscr, Matrix4x4 invProjscr, GPUFence startFence)
{
var cmd = CommandBufferPool.Get("Build light list");
cmd.WaitOnGPUFence(startFence);
BuildPerTileLightListsCommon(camera, loop, numLights, projscr, invProjscr, cmd);
GPUFence completeFence = cmd.CreateGPUFence();
loop.ExecuteCommandBufferAsync(cmd, ComputeQueueType.Default);
CommandBufferPool.Release(cmd);
return completeFence;
}
void BuildPerTileLightListsCommon(Camera camera, ScriptableRenderContext loop, int numLights, Matrix4x4 projscr, Matrix4x4 invProjscr, CommandBuffer cmd)
{
var w = camera.pixelWidth;
var h = camera.pixelHeight;
var numTilesX = (w + 15) / 16;
var numTilesY = (h + 15) / 16;
var numBigTilesX = (w + 63) / 64;
var numBigTilesY = (h + 63) / 64;
bool isOrthographic = camera.orthographic;
// generate screen-space AABBs (used for both fptl and clustered).
if (numLights != 0)
{
var proj = CameraProjection(camera);
var temp = new Matrix4x4();
temp.SetRow(0, new Vector4(1.0f, 0.0f, 0.0f, 0.0f));
temp.SetRow(1, new Vector4(0.0f, 1.0f, 0.0f, 0.0f));
temp.SetRow(2, new Vector4(0.0f, 0.0f, 0.5f, 0.5f));
temp.SetRow(3, new Vector4(0.0f, 0.0f, 0.0f, 1.0f));
var projh = temp * proj;
var invProjh = projh.inverse;
cmd.SetComputeIntParam(buildScreenAABBShader, "g_isOrthographic", isOrthographic ? 1 : 0);
cmd.SetComputeIntParam(buildScreenAABBShader, "g_iNrVisibLights", numLights);
cmd.SetComputeMatrixParam(buildScreenAABBShader, "g_mProjection", projh);
cmd.SetComputeMatrixParam(buildScreenAABBShader, "g_mInvProjection", invProjh);
cmd.SetComputeBufferParam(buildScreenAABBShader, s_GenAABBKernel, "g_vBoundsBuffer", s_AABBBoundsBuffer);
cmd.DispatchCompute(buildScreenAABBShader, s_GenAABBKernel, (numLights + 7) / 8, 1, 1);
}
// enable coarse 2D pass on 64x64 tiles (used for both fptl and clustered).
if (enableBigTilePrepass)
{
cmd.SetComputeIntParam(buildPerBigTileLightListShader, "g_isOrthographic", isOrthographic ? 1 : 0);
cmd.SetComputeIntParams(buildPerBigTileLightListShader, "g_viDimensions", new int[2] { w, h });
cmd.SetComputeIntParam(buildPerBigTileLightListShader, "g_iNrVisibLights", numLights);
cmd.SetComputeMatrixParam(buildPerBigTileLightListShader, "g_mScrProjection", projscr);
cmd.SetComputeMatrixParam(buildPerBigTileLightListShader, "g_mInvScrProjection", invProjscr);
cmd.SetComputeFloatParam(buildPerBigTileLightListShader, "g_fNearPlane", camera.nearClipPlane);
cmd.SetComputeFloatParam(buildPerBigTileLightListShader, "g_fFarPlane", camera.farClipPlane);
cmd.SetComputeBufferParam(buildPerBigTileLightListShader, s_GenListPerBigTileKernel, "g_vLightList", s_BigTileLightList);
cmd.DispatchCompute(buildPerBigTileLightListShader, s_GenListPerBigTileKernel, numBigTilesX, numBigTilesY, 1);
}
if (usingFptl) // optimized for opaques only
{
cmd.SetComputeIntParam(buildPerTileLightListShader, "g_isOrthographic", isOrthographic ? 1 : 0);
cmd.SetComputeIntParams(buildPerTileLightListShader, "g_viDimensions", new int[2] { w, h });
cmd.SetComputeIntParam(buildPerTileLightListShader, "g_iNrVisibLights", numLights);
cmd.SetComputeMatrixParam(buildPerTileLightListShader, "g_mScrProjection", projscr);
cmd.SetComputeMatrixParam(buildPerTileLightListShader, "g_mInvScrProjection", invProjscr);
cmd.SetComputeTextureParam(buildPerTileLightListShader, s_GenListPerTileKernel, "g_depth_tex", new RenderTargetIdentifier(s_CameraDepthTexture));
cmd.SetComputeBufferParam(buildPerTileLightListShader, s_GenListPerTileKernel, "g_vLightList", s_LightList);
if (enableBigTilePrepass) cmd.SetComputeBufferParam(buildPerTileLightListShader, s_GenListPerTileKernel, "g_vBigTileLightList", s_BigTileLightList);
cmd.DispatchCompute(buildPerTileLightListShader, s_GenListPerTileKernel, numTilesX, numTilesY, 1);
}
if (enableClustered) // works for transparencies too.
{
VoxelLightListGeneration(cmd, camera, numLights, projscr, invProjscr);
}
}
void PushGlobalParams(Camera camera, ScriptableRenderContext loop, Matrix4x4 viewToWorld, Matrix4x4 scrProj, Matrix4x4 incScrProj, int numDirLights)
{
var cmd = CommandBufferPool.Get("Push Global Parameters");
PushGlobalParamsCommon(camera, loop, viewToWorld, scrProj, incScrProj, numDirLights, cmd);
CommandBufferPool.Release(cmd);
}
void PushGlobalParamsWithFence(Camera camera, ScriptableRenderContext loop, Matrix4x4 viewToWorld, Matrix4x4 scrProj, Matrix4x4 incScrProj, int numDirLights, GPUFence startFence)
{
var cmd = CommandBufferPool.Get("Push Global Parameters");
cmd.WaitOnGPUFence(startFence);
PushGlobalParamsCommon(camera, loop, viewToWorld, scrProj, incScrProj, numDirLights, cmd);
CommandBufferPool.Release(cmd);
}
void PushGlobalParamsCommon(Camera camera, ScriptableRenderContext loop, Matrix4x4 viewToWorld, Matrix4x4 scrProj, Matrix4x4 incScrProj, int numDirLights, CommandBuffer cmd)
{
bool isOrthographic = camera.orthographic;
cmd.SetGlobalFloat("g_isOrthographic", (float)(isOrthographic ? 1 : 0));
cmd.SetGlobalFloat("g_widthRT", (float)camera.pixelWidth);
cmd.SetGlobalFloat("g_heightRT", (float)camera.pixelHeight);
cmd.SetGlobalMatrix("g_mViewToWorld", viewToWorld);
cmd.SetGlobalMatrix("g_mWorldToView", viewToWorld.inverse);
cmd.SetGlobalMatrix("g_mScrProjection", scrProj);
cmd.SetGlobalMatrix("g_mInvScrProjection", incScrProj);
cmd.SetGlobalBuffer("g_vLightData", s_LightDataBuffer);
cmd.SetGlobalTexture("_spotCookieTextures", m_CookieTexArray.GetTexCache());
cmd.SetGlobalTexture("_pointCookieTextures", m_CubeCookieTexArray.GetTexCache());
cmd.SetGlobalTexture("_reflCubeTextures", m_CubeReflTexArray.GetTexCache());
var topCube = ReflectionProbe.defaultTexture;
var defdecode = ReflectionProbe.defaultTextureHDRDecodeValues;
cmd.SetGlobalTexture("_reflRootCubeTexture", topCube);
cmd.SetGlobalFloat("_reflRootHdrDecodeMult", defdecode.x);
cmd.SetGlobalFloat("_reflRootHdrDecodeExp", defdecode.y);
if (enableBigTilePrepass)
cmd.SetGlobalBuffer("g_vBigTileLightList", s_BigTileLightList);
if (enableClustered)
{
cmd.SetGlobalFloat("g_fClustScale", m_ClustScale);
cmd.SetGlobalFloat("g_fClustBase", k_ClustLogBase);
cmd.SetGlobalFloat("g_fNearPlane", camera.nearClipPlane);
cmd.SetGlobalFloat("g_fFarPlane", camera.farClipPlane);
cmd.SetGlobalFloat("g_iLog2NumClusters", k_Log2NumClusters);
cmd.SetGlobalFloat("g_isLogBaseBufferEnabled", k_UseDepthBuffer ? 1 : 0);
cmd.SetGlobalBuffer("g_vLayeredOffsetsBuffer", s_PerVoxelOffset);
if (k_UseDepthBuffer)
{
cmd.SetGlobalBuffer("g_logBaseBuffer", s_PerTileLogBaseTweak);
}
}
cmd.SetGlobalFloat("g_nNumDirLights", numDirLights);
cmd.SetGlobalBuffer("g_dirLightData", s_DirLightList);
// Shadow constants
cmd.SetGlobalMatrixArray("g_matWorldToShadow", m_MatWorldToShadow);
cmd.SetGlobalVectorArray("g_vDirShadowSplitSpheres", m_DirShadowSplitSpheres);
cmd.SetGlobalVector("g_vShadow3x3PCFTerms0", m_Shadow3X3PCFTerms[0]);
cmd.SetGlobalVector("g_vShadow3x3PCFTerms1", m_Shadow3X3PCFTerms[1]);
cmd.SetGlobalVector("g_vShadow3x3PCFTerms2", m_Shadow3X3PCFTerms[2]);
cmd.SetGlobalVector("g_vShadow3x3PCFTerms3", m_Shadow3X3PCFTerms[3]);
loop.ExecuteCommandBuffer(cmd);
}
}
}