public void TickLogic(CRenderContext RHICtx, CGfxCamera ViewerCamera, Vector3 DirLightDir)
{
ViewerCamera.mShadowDistance = mShadowDistance;
m_refViewerCamera = ViewerCamera;
mDirLightDirection = DirLightDir;
for (UInt32 CsmIdx = 0; CsmIdx < mCsmNum; CsmIdx++)
{
//calculate viewer camera frustum bounding sphere and shadow camera data;
float HalfFoV = ViewerCamera.FoV * 0.5f;
float FrustumNear = 0.0f;
if (CsmIdx == 0)
{
FrustumNear = ViewerCamera.ZNear;
}
else
{
FrustumNear = mSumDistanceFarArray[CsmIdx - 1];
}
float FrustumFar = mSumDistanceFarArray[CsmIdx];
float FrustumLength = FrustumFar - FrustumNear;
float TanHalfFoVHeight = (float)Math.Tan(HalfFoV);
float TanHalfFoVWidth = TanHalfFoVHeight * ViewerCamera.Aspect;
float NearHalfHeight = FrustumNear * TanHalfFoVHeight;
float NearHalfWidth = FrustumNear * TanHalfFoVWidth;
Vector3 NearUpOffset = NearHalfHeight * ViewerCamera.CameraData.Up;
Vector3 NearRightOffset = NearHalfWidth * ViewerCamera.CameraData.Right;
float FarHalfHeight = FrustumFar * TanHalfFoVHeight;
float FarHalfWidth = FrustumFar * TanHalfFoVWidth;
Vector3 FarUpOffset = FarHalfHeight * ViewerCamera.CameraData.Up;
Vector3 FarRightOffset = FarHalfWidth * ViewerCamera.CameraData.Right;
mCSM_FrustumVtx[0] = ViewerCamera.CameraData.Position + ViewerCamera.CameraData.Direction * FrustumNear + NearRightOffset + NearUpOffset; //nrt;
mCSM_FrustumVtx[1] = ViewerCamera.CameraData.Position + ViewerCamera.CameraData.Direction * FrustumNear + NearRightOffset - NearUpOffset; //nrb;
mCSM_FrustumVtx[2] = ViewerCamera.CameraData.Position + ViewerCamera.CameraData.Direction * FrustumNear - NearRightOffset + NearUpOffset; //nlt;
mCSM_FrustumVtx[3] = ViewerCamera.CameraData.Position + ViewerCamera.CameraData.Direction * FrustumNear - NearRightOffset - NearUpOffset; //nlb;
mCSM_FrustumVtx[4] = ViewerCamera.CameraData.Position + ViewerCamera.CameraData.Direction * FrustumFar + FarRightOffset + FarUpOffset; //frt;
mCSM_FrustumVtx[5] = ViewerCamera.CameraData.Position + ViewerCamera.CameraData.Direction * FrustumFar + FarRightOffset - FarUpOffset; //frb;
mCSM_FrustumVtx[6] = ViewerCamera.CameraData.Position + ViewerCamera.CameraData.Direction * FrustumFar - FarRightOffset + FarUpOffset; //flt;
mCSM_FrustumVtx[7] = ViewerCamera.CameraData.Position + ViewerCamera.CameraData.Direction * FrustumFar - FarRightOffset - FarUpOffset; //flb;
//Vector3 FrustumCenter = (mCSM_FrustumVtx[1] + mCSM_FrustumVtx[2] + mCSM_FrustumVtx[7] + mCSM_FrustumVtx[4]) / 4.0f;
//Vector3 ViewerCameraPos = ViewerCamera.CameraData.Position;
//float DistanceFrustum2Camera = Vector3.Distance(ref FrustumCenter, ref ViewerCameraPos);
//Vector3 FrustumSphereCenter = ViewerCamera.CameraData.Position + ViewerCamera.CameraData.Direction * DistanceFrustum2Camera;
float NearHalfDiagonalSqr = NearHalfWidth * NearHalfWidth + NearHalfHeight * NearHalfHeight;
float FarHalfDiagonalSqr = FarHalfWidth * FarHalfWidth + FarHalfHeight * FarHalfHeight;
float OptimalOffset = FrustumLength * 0.5f + (NearHalfDiagonalSqr - FarHalfDiagonalSqr) / (2.0f * FrustumLength);
float ViewerPosOffset = Clamp(FrustumFar - OptimalOffset, FrustumNear, FrustumFar);
Vector3 FrustumSphereCenter = ViewerCamera.CameraData.Position + ViewerCamera.CameraData.Direction * ViewerPosOffset;
float FrustumSphereRadius = 1.0f;
for (UInt32 FSR_Idx = 0; FSR_Idx < 8; FSR_Idx++)
{
FrustumSphereRadius = Math.Max(FrustumSphereRadius, Vector3.DistanceSquared(FrustumSphereCenter, mCSM_FrustumVtx[FSR_Idx]));
}
//FrustumSphereRadius = (float)Math.Ceiling((float)Math.Sqrt(FrustumSphereRadius));
FrustumSphereRadius = (float)Math.Sqrt(FrustumSphereRadius);
Vector3 ShadowCameraPos = FrustumSphereCenter - mDirLightDirection * (FrustumSphereRadius + mShadowCameraOffset);
mShadowCameraArray[CsmIdx].LookAtLH(ShadowCameraPos, FrustumSphereCenter, Vector3.UnitY, true);
float FrustumSphereDiameter = FrustumSphereRadius * 2.0f;
float ShadowCameraZFar = mShadowCameraOffset + FrustumSphereDiameter;
float ShadowCameraZNear = 0.0f;
mShadowCameraArray[CsmIdx].MakeOrtho(FrustumSphereDiameter, FrustumSphereDiameter, ShadowCameraZNear, ShadowCameraZFar);
Vector4 WorldCenterNDC = Vector4.Transform(new Vector4(0.0f, 0.0f, 0.0f, 1.0f), mShadowCameraArray[CsmIdx].CameraData.ViewProjection);
float TexelPosX = (WorldCenterNDC.X * 0.5f + 0.5f) * mInnerResolutionX;
float TexelPosAdjustedNdcX = ((float)Math.Floor(TexelPosX) / mInnerResolutionX - 0.5f) / 0.5f;
float TexelOffsetNdcX = TexelPosAdjustedNdcX - WorldCenterNDC.X;
float TexelPosY = (WorldCenterNDC.Y * (-0.5f) + 0.5f) * mInnerResolutionY;
float TexelPosAdjustedNdcY = ((float)Math.Floor(TexelPosY) / mInnerResolutionY - 0.5f) / (-0.5f);
float TexelOffsetNdcY = TexelPosAdjustedNdcY - WorldCenterNDC.Y;
mShadowCameraArray[CsmIdx].DoOrthoProjectionForShadow(FrustumSphereDiameter, FrustumSphereDiameter, ShadowCameraZNear, ShadowCameraZFar, TexelOffsetNdcX, TexelOffsetNdcY);
//data for other code to use;
{
mViewer2ShadowMtxArray[CsmIdx] = mShadowCameraArray[CsmIdx].CameraData.ViewProjection * mOrtho2UVMtx * mUVAdjustedMtxArray[CsmIdx];
float UniformDepthBias = 2.0f;
float PerObjCustomDepthBias = 1.0f;
float DepthBiasClipSpace = UniformDepthBias / (ShadowCameraZFar - ShadowCameraZNear) * (FrustumSphereDiameter / mInnerResolutionY) * PerObjCustomDepthBias;
//mShadowMapView.mDepthBiasAndZFarRcp = new Vector2(DepthBiasClipSpace, 1.0f / ShadowCameraZFar);
mShadowMapView.mDepthBiasAndZFarRcp = new Vector2(0.0f, 1.0f / ShadowCameraZFar);
mShadowTransitionScaleArray[CsmIdx] = 1.0f / (DepthBiasClipSpace + 0.00001f);
float FadeStartDistance = mShadowDistance - mShadowDistance * mFadeStrength;
mFadeParam.X = 1.0f / (mShadowDistance - FadeStartDistance + 0.0001f);
mFadeParam.Y = -FadeStartDistance * mFadeParam.X;
}
ViewerCamera.PushVisibleMesh2ShadowLayer(mShadowCameraArray[CsmIdx].CullingFrustum);
mShadowMapView.ResizeViewport(mResolutionX * CsmIdx + mBorderSize, mBorderSize, mInnerResolutionY, mInnerResolutionY);
mShadowMapView.CookShadowLayerData2Pass(RHICtx, m_refViewerCamera, mShadowCameraArray[CsmIdx], mSE_CSMMobile);
var CmdList = mCmdListDB_Shadow[CsmIdx, 0];
mShadowMapView.PushSpecRenderLayerDataToRHI(CmdList, ERenderLayer.RL_Shadow);
CmdList.BeginCommand();
CmdList.BeginRenderPass(mRenderPassDesc_CSM[CsmIdx], mShadowMapView.FrameBuffer);
CmdList.BuildRenderPass(DPLimitter);
CmdList.EndRenderPass();
CmdList.EndCommand();
ViewerCamera.ClearSpecRenderLayerData(ERenderLayer.RL_Shadow);
DrawCall = CmdList.DrawCall;
DrawTriangle = CmdList.DrawTriangle;
}
mShadowTransitionScaleVec.X = mShadowTransitionScaleArray[0];
mShadowTransitionScaleVec.Y = mShadowTransitionScaleArray[1];
mShadowTransitionScaleVec.Z = mShadowTransitionScaleArray[2];
mShadowTransitionScaleVec.W = mShadowTransitionScaleArray[3];
}
public async System.Threading.Tasks.Task <bool> Init(CRenderContext RHICtx)
{
await Thread.AsyncDummyClass.DummyFunc();
if (mSE_CSMMobile == null)
{
mSE_CSMMobile = CEngine.Instance.ShadingEnvManager.GetGfxShadingEnv <CGfxSE_SSM>();
}
if (mSE_CSMMobile == null)
{
return(false);
}
mWholeReslutionX = mResolutionX * mCsmNum;
mWholeReslutionY = mResolutionY;
CGfxSceneViewInfo ShadowMapViewInfo = new CGfxSceneViewInfo();
ShadowMapViewInfo.mUseDSV = true;
ShadowMapViewInfo.Width = mWholeReslutionX;
ShadowMapViewInfo.Height = mWholeReslutionY;
ShadowMapViewInfo.mDSVDesc.Init();
ShadowMapViewInfo.mDSVDesc.Format = EngineNS.EPixelFormat.PXF_D16_UNORM;
ShadowMapViewInfo.mDSVDesc.Width = mWholeReslutionX;
ShadowMapViewInfo.mDSVDesc.Height = mWholeReslutionY;
mShadowMapView = new CGfxSceneView();
if (false == mShadowMapView.Init(RHICtx, null, ShadowMapViewInfo))
{
return(false);
}
mRenderPassDesc_CSM = new CRenderPassDesc[4];
FrameBufferClearColor TempClearColor = new FrameBufferClearColor();
TempClearColor.r = 1.0f;
TempClearColor.g = 1.0f;
TempClearColor.b = 1.0f;
TempClearColor.a = 1.0f;
mRenderPassDesc_CSM[0].mFBLoadAction_Color = FrameBufferLoadAction.LoadActionClear;
mRenderPassDesc_CSM[0].mFBStoreAction_Color = FrameBufferStoreAction.StoreActionStore;
mRenderPassDesc_CSM[0].mFBClearColorRT0 = TempClearColor;
mRenderPassDesc_CSM[0].mFBLoadAction_Depth = FrameBufferLoadAction.LoadActionClear;
mRenderPassDesc_CSM[0].mFBStoreAction_Depth = FrameBufferStoreAction.StoreActionStore;
mRenderPassDesc_CSM[0].mDepthClearValue = 1.0f;
mRenderPassDesc_CSM[0].mFBLoadAction_Stencil = FrameBufferLoadAction.LoadActionClear;
mRenderPassDesc_CSM[0].mFBStoreAction_Stencil = FrameBufferStoreAction.StoreActionStore;
mRenderPassDesc_CSM[0].mStencilClearValue = 0u;
for (UInt32 RPDIdx = 1; RPDIdx < 4; RPDIdx++)
{
mRenderPassDesc_CSM[RPDIdx].mFBLoadAction_Color = FrameBufferLoadAction.LoadActionLoad;
mRenderPassDesc_CSM[RPDIdx].mFBStoreAction_Color = FrameBufferStoreAction.StoreActionStore;
mRenderPassDesc_CSM[RPDIdx].mFBClearColorRT0 = TempClearColor;
mRenderPassDesc_CSM[RPDIdx].mFBLoadAction_Depth = FrameBufferLoadAction.LoadActionLoad;
mRenderPassDesc_CSM[RPDIdx].mFBStoreAction_Depth = FrameBufferStoreAction.StoreActionStore;
mRenderPassDesc_CSM[RPDIdx].mDepthClearValue = 1.0f;
mRenderPassDesc_CSM[RPDIdx].mFBLoadAction_Stencil = FrameBufferLoadAction.LoadActionLoad;
mRenderPassDesc_CSM[RPDIdx].mFBStoreAction_Stencil = FrameBufferStoreAction.StoreActionStore;
mRenderPassDesc_CSM[RPDIdx].mStencilClearValue = 0u;
}
mShadowCameraArray = new CGfxCamera[4];
for (UInt32 CamIdx = 0; CamIdx < 4; CamIdx++)
{
mShadowCameraArray[CamIdx] = new CGfxCamera();
if (mShadowCameraArray[CamIdx].Init(RHICtx, false) == false)
{
return(false);
}
}
mShadowMapView.ResizeViewport(mBorderSize, mBorderSize, mInnerResolutionY, mInnerResolutionY);
mShadowMapSizeAndRcp.X = mWholeReslutionX;
mShadowMapSizeAndRcp.Y = mWholeReslutionY;
mShadowMapSizeAndRcp.Z = 1.0f / mWholeReslutionX;
mShadowMapSizeAndRcp.W = 1.0f / mWholeReslutionY;
if (CEngine.Instance.RenderSystem.RHIType == ERHIType.RHT_OGL)
{
//gles;
mOrtho2UVMtx.M11 = 0.5f;
mOrtho2UVMtx.M22 = 0.5f;
mOrtho2UVMtx.M33 = 0.5f;
mOrtho2UVMtx.M44 = 1.0f;
mOrtho2UVMtx.M41 = 0.5f;
mOrtho2UVMtx.M42 = 0.5f;
mOrtho2UVMtx.M43 = 0.5f;
}
else
{
// D3D
mOrtho2UVMtx.M11 = 0.5f;
mOrtho2UVMtx.M22 = -0.5f;
mOrtho2UVMtx.M33 = 1.0f;
mOrtho2UVMtx.M44 = 1.0f;
mOrtho2UVMtx.M41 = 0.5f;
mOrtho2UVMtx.M42 = 0.5f;
}
for (UInt32 UVAdjustIdx = 0; UVAdjustIdx < mCsmNum; UVAdjustIdx++)
{
mUVAdjustedMtxArray[UVAdjustIdx].M11 = (float)mInnerResolutionX / (float)mWholeReslutionX;
mUVAdjustedMtxArray[UVAdjustIdx].M22 = (float)mInnerResolutionY / (float)mWholeReslutionY;
mUVAdjustedMtxArray[UVAdjustIdx].M33 = 1.0f;
mUVAdjustedMtxArray[UVAdjustIdx].M44 = 1.0f;
mUVAdjustedMtxArray[UVAdjustIdx].M41 = (float)(mResolutionX * UVAdjustIdx + mBorderSize) / (float)mWholeReslutionX;
mUVAdjustedMtxArray[UVAdjustIdx].M42 = (float)mBorderSize / (float)mWholeReslutionY;
}
mCsmDistanceArray[0] = mShadowDistance * 0.08f;
mCsmDistanceArray[1] = mShadowDistance * 0.15f;
mCsmDistanceArray[2] = mShadowDistance * 0.30f;
mCsmDistanceArray[3] = mShadowDistance * 0.47f;
mSumDistanceFarArray[0] = mCsmDistanceArray[0];
mSumDistanceFarArray[1] = mCsmDistanceArray[0] + mCsmDistanceArray[1];
mSumDistanceFarArray[2] = mCsmDistanceArray[0] + mCsmDistanceArray[1] + mCsmDistanceArray[2];
mSumDistanceFarArray[3] = mCsmDistanceArray[0] + mCsmDistanceArray[1] + mCsmDistanceArray[2] + mCsmDistanceArray[3];
mSumDistanceFarVec.X = mSumDistanceFarArray[0];
mSumDistanceFarVec.Y = mSumDistanceFarArray[1];
mSumDistanceFarVec.Z = mSumDistanceFarArray[2];
mSumDistanceFarVec.W = mSumDistanceFarArray[3];
return(true);
}
public async System.Threading.Tasks.Task <bool> Init(CRenderContext RHICtx)
{
await Thread.AsyncDummyClass.DummyFunc();
if (mSE_SSM == null)
{
mSE_SSM = CEngine.Instance.ShadingEnvManager.GetGfxShadingEnv <CGfxSE_SSM>();
}
if (mSE_SSM == null)
{
return(false);
}
CGfxSceneViewInfo ShadowMapViewInfo = new CGfxSceneViewInfo();
ShadowMapViewInfo.mUseDSV = true;
ShadowMapViewInfo.Width = mResolutionX;
ShadowMapViewInfo.Height = mResolutionY;
// TODO��OpenGL ES���ʹ�� D24S8��ʽ�� ����depth texture�Ľ����Զ��0�� D16��D32��ʽ����ȷ�ġ�
ShadowMapViewInfo.mDSVDesc.Init();
ShadowMapViewInfo.mDSVDesc.Format = EngineNS.EPixelFormat.PXF_D16_UNORM;
//ShadowMapViewInfo.mDSVDesc.Format = EngineNS.EPixelFormat.PXF_D32_FLOAT;
//ShadowMapViewInfo.mDSVDesc.Format = EngineNS.EPixelFormat.PXF_D24_UNORM_S8_UINT;
ShadowMapViewInfo.mDSVDesc.Width = mResolutionX;
ShadowMapViewInfo.mDSVDesc.Height = mResolutionY;
//CRenderTargetViewDesc rtDesc0 = new CRenderTargetViewDesc();
//rtDesc0.Init();
//rtDesc0.Format = EPixelFormat.PXF_R8G8B8A8_UNORM;
//rtDesc0.Width = mResolutionX;
//rtDesc0.Height = mResolutionY;
//ShadowMapViewInfo.mRTVDescArray.Add(rtDesc0);
mShadowMapView = new CGfxSceneView();
if (false == mShadowMapView.Init(RHICtx, null, ShadowMapViewInfo))
{
return(false);
}
mRenderPassDesc_SSM = new CRenderPassDesc();
FrameBufferClearColor TempClearColor = new FrameBufferClearColor();
TempClearColor.r = 1.0f;
TempClearColor.g = 1.0f;
TempClearColor.b = 1.0f;
TempClearColor.a = 1.0f;
mRenderPassDesc_SSM.mFBLoadAction_Color = FrameBufferLoadAction.LoadActionClear;
mRenderPassDesc_SSM.mFBStoreAction_Color = FrameBufferStoreAction.StoreActionStore;
mRenderPassDesc_SSM.mFBClearColorRT0 = TempClearColor;
mRenderPassDesc_SSM.mFBLoadAction_Depth = FrameBufferLoadAction.LoadActionClear;
mRenderPassDesc_SSM.mFBStoreAction_Depth = FrameBufferStoreAction.StoreActionStore;
mRenderPassDesc_SSM.mDepthClearValue = 1.0f;
mRenderPassDesc_SSM.mFBLoadAction_Stencil = FrameBufferLoadAction.LoadActionClear;
mRenderPassDesc_SSM.mFBStoreAction_Stencil = FrameBufferStoreAction.StoreActionStore;
mRenderPassDesc_SSM.mStencilClearValue = 0u;
mShadowCamera = new CGfxCamera();
if (mShadowCamera.Init(RHICtx, false) == false)
{
return(false);
}
//mShadowCamera.SetSceneView(RHICtx, mShadowMapView);
mShadowMapView.ResizeViewport(mBorderSize, mBorderSize, mInnerResolutionY, mInnerResolutionY);
mShadowMapSizeAndRcp.X = mResolutionX;
mShadowMapSizeAndRcp.Y = mResolutionY;
mShadowMapSizeAndRcp.Z = 1.0f / mResolutionX;
mShadowMapSizeAndRcp.W = 1.0f / mResolutionY;
//// OpenGL
//mOrtho2UVMtx.M11 = 0.5f;
//mOrtho2UVMtx.M22 = 0.5f;
//mOrtho2UVMtx.M33 = 0.5f;
//mOrtho2UVMtx.M41 = 0.5f;
//mOrtho2UVMtx.M42 = 0.5f;
//mOrtho2UVMtx.M43 = 0.5f;
//mOrtho2UVMtx.M44 = 1.0f;
if (CEngine.Instance.RenderSystem.RHIType == ERHIType.RHT_OGL)
{
//gles;
mOrtho2UVMtx.M11 = 0.5f;
mOrtho2UVMtx.M22 = 0.5f;
mOrtho2UVMtx.M33 = 0.5f;
mOrtho2UVMtx.M44 = 1.0f;
mOrtho2UVMtx.M41 = 0.5f;
mOrtho2UVMtx.M42 = 0.5f;
mOrtho2UVMtx.M43 = 0.5f;
}
else
{
// D3D
mOrtho2UVMtx.M11 = 0.5f;
mOrtho2UVMtx.M22 = -0.5f;
mOrtho2UVMtx.M33 = 1.0f;
mOrtho2UVMtx.M44 = 1.0f;
mOrtho2UVMtx.M41 = 0.5f;
mOrtho2UVMtx.M42 = 0.5f;
}
return(true);
}