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1478 lines (1275 loc) · 77.1 KB
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////////////////////////////////////////////////////////////////////////////////
// Copyright 2017 Intel Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy
// of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
////////////////////////////////////////////////////////////////////////////////
#include "LightSctrPostProcess.h"
#include <atlcomcli.h>
#include <cassert>
#include <stdio.h>
#include "ShaderMacroHelper.h"
#define _USE_MATH_DEFINES
#include <math.h>
#ifndef V
#define V(x) { hr = (x); assert( SUCCEEDED(hr) ); }
#endif
#ifndef V_RETURN
#define V_RETURN(x) { hr = (x); assert( SUCCEEDED(hr) ); if( FAILED(hr) ) { return hr; } }
#endif
CLightSctrPostProcess :: CLightSctrPostProcess() :
m_uiSampleRefinementCSThreadGroupSize(0),
// Using small group size is inefficient because a lot of SIMD lanes become idle
m_uiSampleRefinementCSMinimumThreadGroupSize(128),// Must be greater than 32
m_fTurbidity(1.02f),
m_strEffectPath( L"LightScattering.fx" )
{
ComputeScatteringCoefficients();
}
CLightSctrPostProcess :: ~CLightSctrPostProcess()
{
}
HRESULT CLightSctrPostProcess :: OnCreateDevice(ID3D11Device* in_pd3dDevice,
ID3D11DeviceContext *in_pd3dDeviceContext)
{
HRESULT hr;
// Create depth stencil states
// Disable depth testing
D3D11_DEPTH_STENCIL_DESC DisableDepthTestDSDesc;
ZeroMemory(&DisableDepthTestDSDesc, sizeof(DisableDepthTestDSDesc));
DisableDepthTestDSDesc.DepthEnable = FALSE;
DisableDepthTestDSDesc.DepthWriteMask = D3D11_DEPTH_WRITE_MASK_ZERO;
V_RETURN( in_pd3dDevice->CreateDepthStencilState( &DisableDepthTestDSDesc, &m_pDisableDepthTestDS) );
// Disable depth testing and always increment stencil value
// This depth stencil state is used to mark samples which will undergo further processing
// Pixel shader discards pixels which should not be further processed, thus keeping the
// stencil value untouched
// For instance, pixel shader performing epipolar coordinates generation discards all
// sampes, whoose coordinates are outside the screen [-1,1]x[-1,1] area
D3D11_DEPTH_STENCIL_DESC DisbaleDepthIncrStencilDSSDesc = DisableDepthTestDSDesc;
DisbaleDepthIncrStencilDSSDesc.StencilEnable = TRUE;
DisbaleDepthIncrStencilDSSDesc.FrontFace.StencilFunc = D3D11_COMPARISON_ALWAYS;
DisbaleDepthIncrStencilDSSDesc.FrontFace.StencilPassOp = D3D11_STENCIL_OP_INCR;
DisbaleDepthIncrStencilDSSDesc.FrontFace.StencilFailOp = D3D11_STENCIL_OP_KEEP;
DisbaleDepthIncrStencilDSSDesc.FrontFace.StencilDepthFailOp = D3D11_STENCIL_OP_KEEP;
DisbaleDepthIncrStencilDSSDesc.BackFace.StencilFunc = D3D11_COMPARISON_ALWAYS;
DisbaleDepthIncrStencilDSSDesc.BackFace.StencilPassOp = D3D11_STENCIL_OP_INCR;
DisbaleDepthIncrStencilDSSDesc.BackFace.StencilFailOp = D3D11_STENCIL_OP_KEEP;
DisbaleDepthIncrStencilDSSDesc.BackFace.StencilDepthFailOp = D3D11_STENCIL_OP_KEEP;
DisbaleDepthIncrStencilDSSDesc.StencilReadMask = D3D11_DEFAULT_STENCIL_READ_MASK;
DisbaleDepthIncrStencilDSSDesc.StencilWriteMask = D3D11_DEFAULT_STENCIL_WRITE_MASK;
V_RETURN( in_pd3dDevice->CreateDepthStencilState( &DisbaleDepthIncrStencilDSSDesc, &m_pDisableDepthTestIncrStencilDS) );
// Disable depth testing, stencil testing function equal, increment stencil
// This state is used to process only these pixels that were marked at the previous pass
// All pixels whith different stencil value are discarded from further processing as well
// as some pixels can also be discarded during the draw call
// For instance, pixel shader marking ray marching samples processes only these pixels which are inside
// the screen. It also discards all but these samples which are interpolated from themselves
D3D11_DEPTH_STENCIL_DESC DisbaleDepthStencilEqualIncrStencilDSSDesc = DisbaleDepthIncrStencilDSSDesc;
DisbaleDepthStencilEqualIncrStencilDSSDesc.FrontFace.StencilFunc = D3D11_COMPARISON_EQUAL;
DisbaleDepthStencilEqualIncrStencilDSSDesc.BackFace.StencilFunc = D3D11_COMPARISON_EQUAL;
V_RETURN( in_pd3dDevice->CreateDepthStencilState( &DisbaleDepthStencilEqualIncrStencilDSSDesc, &m_pNoDepth_StEqual_IncrStencilDS) );
// Create rasterizer state
D3D11_RASTERIZER_DESC SolidFillNoCullRSDesc;
ZeroMemory(&SolidFillNoCullRSDesc, sizeof(SolidFillNoCullRSDesc));
SolidFillNoCullRSDesc.FillMode = D3D11_FILL_SOLID;
SolidFillNoCullRSDesc.CullMode = D3D11_CULL_NONE;
V_RETURN( in_pd3dDevice->CreateRasterizerState( &SolidFillNoCullRSDesc, &m_pSolidFillNoCullRS) );
// Create default blend state
D3D11_BLEND_DESC DefaultBlendStateDesc;
ZeroMemory(&DefaultBlendStateDesc, sizeof(DefaultBlendStateDesc));
DefaultBlendStateDesc.IndependentBlendEnable = FALSE;
for(int i=0; i< _countof(DefaultBlendStateDesc.RenderTarget); i++)
DefaultBlendStateDesc.RenderTarget[i].RenderTargetWriteMask = D3D11_COLOR_WRITE_ENABLE_ALL;
V_RETURN( in_pd3dDevice->CreateBlendState( &DefaultBlendStateDesc, &m_pDefaultBS) );
// Create samplers
D3D11_SAMPLER_DESC SamLinearBorder0Desc =
{
D3D11_FILTER_MIN_MAG_MIP_LINEAR,
D3D11_TEXTURE_ADDRESS_BORDER,
D3D11_TEXTURE_ADDRESS_BORDER,
D3D11_TEXTURE_ADDRESS_BORDER,
0, //FLOAT MipLODBias;
0, //UINT MaxAnisotropy;
D3D11_COMPARISON_NEVER, // D3D11_COMPARISON_FUNC ComparisonFunc;
{0.f, 0.f, 0.f, 0.f}, //FLOAT BorderColor[ 4 ];
-FLT_MAX, //FLOAT MinLOD;
+FLT_MAX //FLOAT MaxLOD;
};
V_RETURN( in_pd3dDevice->CreateSamplerState( &SamLinearBorder0Desc, &m_psamLinearBorder0) );
D3D11_SAMPLER_DESC SamLinearClampDesc =
{
D3D11_FILTER_MIN_MAG_MIP_LINEAR,
D3D11_TEXTURE_ADDRESS_CLAMP,
D3D11_TEXTURE_ADDRESS_CLAMP,
D3D11_TEXTURE_ADDRESS_CLAMP,
0, //FLOAT MipLODBias;
0, //UINT MaxAnisotropy;
D3D11_COMPARISON_NEVER, // D3D11_COMPARISON_FUNC ComparisonFunc;
{0.f, 0.f, 0.f, 0.f}, //FLOAT BorderColor[ 4 ];
-FLT_MAX, //FLOAT MinLOD;
+FLT_MAX //FLOAT MaxLOD;
};
V_RETURN( in_pd3dDevice->CreateSamplerState( &SamLinearClampDesc, &m_psamLinearClamp) );
D3D11_SAMPLER_DESC SamLinearUClampVWrapDesc =
{
D3D11_FILTER_MIN_MAG_MIP_LINEAR,
D3D11_TEXTURE_ADDRESS_CLAMP,
D3D11_TEXTURE_ADDRESS_WRAP,
D3D11_TEXTURE_ADDRESS_CLAMP,
0, //FLOAT MipLODBias;
0, //UINT MaxAnisotropy;
D3D11_COMPARISON_NEVER, // D3D11_COMPARISON_FUNC ComparisonFunc;
{0.f, 0.f, 0.f, 0.f}, //FLOAT BorderColor[ 4 ];
-FLT_MAX, //FLOAT MinLOD;
+FLT_MAX //FLOAT MaxLOD;
};
V_RETURN( in_pd3dDevice->CreateSamplerState( &SamLinearUClampVWrapDesc, &m_psamLinearUClampVWrap) );
D3D11_SAMPLER_DESC SamComparisonDesc =
{
D3D11_FILTER_COMPARISON_MIN_MAG_LINEAR_MIP_POINT,
D3D11_TEXTURE_ADDRESS_BORDER,
D3D11_TEXTURE_ADDRESS_BORDER,
D3D11_TEXTURE_ADDRESS_BORDER,
0, //FLOAT MipLODBias;
0, //UINT MaxAnisotropy;
D3D11_COMPARISON_GREATER, // D3D11_COMPARISON_FUNC ComparisonFunc;
{0.f, 0.f, 0.f, 0.f}, //FLOAT BorderColor[ 4 ];
-FLT_MAX, //FLOAT MinLOD;
+FLT_MAX //FLOAT MaxLOD;
};
V_RETURN( in_pd3dDevice->CreateSamplerState( &SamComparisonDesc, &m_psamComparison) );
// Create constant buffers
D3D11_BUFFER_DESC CBDesc =
{
sizeof(SCameraAttribs),
D3D11_USAGE_DYNAMIC,
D3D11_BIND_CONSTANT_BUFFER,
D3D11_CPU_ACCESS_WRITE, //UINT CPUAccessFlags
0, //UINT MiscFlags;
0, //UINT StructureByteStride;
};
V_RETURN( in_pd3dDevice->CreateBuffer( &CBDesc, NULL, &m_pcbCameraAttribs) );
CBDesc.ByteWidth = sizeof(SLightAttribs);
V_RETURN( in_pd3dDevice->CreateBuffer( &CBDesc, NULL, &m_pcbLightAttribs) );
CBDesc.ByteWidth = sizeof(SPostProcessingAttribs);
V_RETURN( in_pd3dDevice->CreateBuffer( &CBDesc, NULL, &m_pcbPostProcessingAttribs) );
CBDesc.ByteWidth = sizeof(SMiscDynamicParams);
V_RETURN( in_pd3dDevice->CreateBuffer( &CBDesc, NULL, &m_pcbMiscParams) );
CBDesc.ByteWidth = sizeof(SParticipatingMediaScatteringParams);
CBDesc.Usage = D3D11_USAGE_DEFAULT;
CBDesc.CPUAccessFlags = 0;
D3D11_SUBRESOURCE_DATA InitData =
{
&m_MediaParams,
0, // UINT SysMemPitch
0 // UINT SysMemSlicePitch
};
V_RETURN( in_pd3dDevice->CreateBuffer( &CBDesc, &InitData, &m_pcbMediaAttribs) );
CRenderTechnique GenerateScreenSizeQuadTech;
GenerateScreenSizeQuadTech.SetDeviceAndContext( in_pd3dDevice, in_pd3dDeviceContext );
V( GenerateScreenSizeQuadTech.CreateVertexShaderFromFile(m_strEffectPath, "GenerateScreenSizeQuadVS", NULL ) );
m_pGenerateScreenSizeQuadVS = GenerateScreenSizeQuadTech.GetVS();
return S_OK;
}
void CLightSctrPostProcess :: OnDestroyDevice()
{
m_ptex2DSliceEndpointsSRV.Release();
m_ptex2DSliceEndpointsRTV.Release();
m_ptex2DCoordianteTextureSRV.Release();
m_ptex2DCoordianteTextureRTV.Release();
m_ptex2DEpipolarImageDSV.Release();
m_ptex2DInterpolationSourcesSRV.Release();
m_ptex2DInterpolationSourcesUAV.Release();
m_ptex2DEpipolarCamSpaceZSRV.Release();
m_ptex2DEpipolarCamSpaceZRTV.Release();
m_ptex2DScatteredLightSRV.Release();
m_ptex2DScatteredLightRTV.Release();
m_ptex2DInitialScatteredLightSRV.Release();
m_ptex2DInitialScatteredLightRTV.Release();
m_ptex2DDownscaledScatteredLightSRV.Release();
m_ptex2DDownscaledScatteredLightRTV.Release();
m_ptex2DScreenSizeDSV.Release();
m_ptex2DDownscaledDSV.Release();
m_ptex2DCameraSpaceZRTV.Release();
m_ptex2DCameraSpaceZSRV.Release();
for(int i=0; i < _countof(m_ptex2DMinMaxShadowMapSRV); ++i)
m_ptex2DMinMaxShadowMapSRV[i].Release();
for(int i=0; i < _countof(m_ptex2DMinMaxShadowMapRTV); ++i)
m_ptex2DMinMaxShadowMapRTV[i].Release();
m_ptex2DSliceUVDirAndOriginSRV.Release();
m_ptex2DSliceUVDirAndOriginRTV.Release();
m_ptex2DPrecomputedPointLightInsctrSRV.Release();
m_psamLinearClamp.Release();
m_psamLinearBorder0.Release();
m_psamLinearUClampVWrap.Release();
m_psamComparison.Release();
m_ReconstrCamSpaceZTech.Release();
m_RendedSliceEndpointsTech.Release();
m_RendedCoordTexTech.Release();
m_RefineSampleLocationsTech.Release();
m_MarkRayMarchingSamplesInStencilTech.Release();
m_RenderSliceUVDirInSMTech.Release();
m_InitializeMinMaxShadowMapTech.Release();
m_ComputeMinMaxSMLevelTech.Release();
m_DoRayMarchTech[0].Release();
m_DoRayMarchTech[1].Release();
m_InterpolateIrradianceTech.Release();
m_UnwarpEpipolarSctrImgTech[0].Release();
m_UnwarpEpipolarSctrImgTech[1].Release();
m_FixInsctrAtDepthBreaksTech[0].Release();
m_FixInsctrAtDepthBreaksTech[1].Release();
m_UpscaleInsctrdRadianceTech.Release();
m_RenderSampleLocationsTech.Release();
m_pGenerateScreenSizeQuadVS.Release();
m_pDisableDepthTestDS.Release();
m_pDisableDepthTestIncrStencilDS.Release();
m_pNoDepth_StEqual_IncrStencilDS.Release();
m_pSolidFillNoCullRS.Release();
m_pDefaultBS.Release();
m_pcbCameraAttribs.Release();
m_pcbLightAttribs.Release();
m_pcbPostProcessingAttribs.Release();
m_pcbMediaAttribs.Release();
m_pcbMiscParams.Release();
}
HRESULT CLightSctrPostProcess :: OnResizedSwapChain(ID3D11Device* pd3dDevice, UINT uiBackBufferWidth, UINT uiBackBufferHeight)
{
m_uiBackBufferWidth = uiBackBufferWidth;
m_uiBackBufferHeight = uiBackBufferHeight;
D3D11_TEXTURE2D_DESC ScreenSizeDepthStencilTexDesc =
{
uiBackBufferWidth, //UINT Width;
uiBackBufferHeight, //UINT Height;
1, //UINT MipLevels;
1, //UINT ArraySize;
DXGI_FORMAT_D24_UNORM_S8_UINT, //DXGI_FORMAT Format;
{1,0}, //DXGI_SAMPLE_DESC SampleDesc;
D3D11_USAGE_DEFAULT, //D3D11_USAGE Usage;
D3D11_BIND_DEPTH_STENCIL, //UINT BindFlags;
0, //UINT CPUAccessFlags;
0, //UINT MiscFlags;
};
m_ptex2DScreenSizeDSV.Release();
CComPtr<ID3D11Texture2D> ptex2DScreenSizeDepthStencil;
// Create 2-D texture, shader resource and target view buffers on the device
HRESULT hr;
V_RETURN( pd3dDevice->CreateTexture2D( &ScreenSizeDepthStencilTexDesc, NULL, &ptex2DScreenSizeDepthStencil) );
V_RETURN( pd3dDevice->CreateDepthStencilView( ptex2DScreenSizeDepthStencil, NULL, &m_ptex2DScreenSizeDSV) );
m_ptex2DDownscaledDSV.Release();
m_ptex2DDownscaledScatteredLightSRV.Release();
m_ptex2DDownscaledScatteredLightRTV.Release();
m_ptex2DCameraSpaceZRTV.Release();
m_ptex2DCameraSpaceZSRV.Release();
D3D11_TEXTURE2D_DESC CamSpaceZTexDesc = ScreenSizeDepthStencilTexDesc;
CamSpaceZTexDesc.Format = DXGI_FORMAT_R32_FLOAT;
CamSpaceZTexDesc.BindFlags = D3D11_BIND_RENDER_TARGET | D3D11_BIND_SHADER_RESOURCE;
CComPtr<ID3D11Texture2D> ptex2DCamSpaceZ;
V_RETURN( pd3dDevice->CreateTexture2D( &CamSpaceZTexDesc, NULL, &ptex2DCamSpaceZ) );
V_RETURN( pd3dDevice->CreateShaderResourceView( ptex2DCamSpaceZ, NULL, &m_ptex2DCameraSpaceZSRV) );
V_RETURN( pd3dDevice->CreateRenderTargetView( ptex2DCamSpaceZ, NULL, &m_ptex2DCameraSpaceZRTV) );
m_RendedSliceEndpointsTech.Release();
m_RenderSampleLocationsTech.Release();
for(int i=0; i < _countof(m_UnwarpEpipolarSctrImgTech); ++i)
m_UnwarpEpipolarSctrImgTech[i].Release();
return S_OK;
}
static void UnbindResources(ID3D11DeviceContext *pDeviceCtx)
{
ID3D11ShaderResourceView *pDummySRVs[8]={NULL};
ID3D11UnorderedAccessView *pDummyUAVs[8]={NULL};
pDeviceCtx->PSSetShaderResources(0, _countof(pDummySRVs), pDummySRVs);
pDeviceCtx->VSSetShaderResources(0, _countof(pDummySRVs), pDummySRVs);
pDeviceCtx->GSSetShaderResources(0, _countof(pDummySRVs), pDummySRVs);
pDeviceCtx->CSSetShaderResources(0, _countof(pDummySRVs), pDummySRVs);
pDeviceCtx->CSSetUnorderedAccessViews(0, _countof(pDummyUAVs), pDummyUAVs, NULL);
}
static void RenderQuad(ID3D11DeviceContext *pd3dDeviceCtx,
CRenderTechnique &State,
int iWidth = 0, int iHeight = 0,
int iTopLeftX = 0, int iTopLeftY = 0)
{
// Initialize the viewport
if( !iWidth && !iHeight )
{
assert( iTopLeftX == 0 && iTopLeftY == 0 );
CComPtr<ID3D11RenderTargetView> pRTV;
pd3dDeviceCtx->OMGetRenderTargets(1, &pRTV, NULL);
CComPtr<ID3D11Resource> pDstTex;
pRTV->GetResource( &pDstTex );
D3D11_TEXTURE2D_DESC DstTexDesc;
CComQIPtr<ID3D11Texture2D>(pDstTex)->GetDesc( &DstTexDesc );
iWidth = DstTexDesc.Width;
iHeight = DstTexDesc.Height;
}
D3D11_VIEWPORT NewViewPort;
NewViewPort.TopLeftX = static_cast<float>( iTopLeftX );
NewViewPort.TopLeftY = static_cast<float>( iTopLeftY );
NewViewPort.Width = static_cast<float>( iWidth );
NewViewPort.Height = static_cast<float>( iHeight );
NewViewPort.MinDepth = 0;
NewViewPort.MaxDepth = 1;
// Set the viewport
pd3dDeviceCtx->RSSetViewports(1, &NewViewPort);
UINT offset[1] = {0};
UINT stride[1] = {0};
ID3D11Buffer *ppBuffers[1] = {0};
pd3dDeviceCtx->IASetVertexBuffers(0, 1, ppBuffers, stride, offset);
// There is no input-layout object and the primitive topology is triangle strip
pd3dDeviceCtx->IASetInputLayout(NULL);
pd3dDeviceCtx->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP);
State.Apply();
// Draw 4 vertices (two triangles )
pd3dDeviceCtx->Draw(4, 0);
// Unbind resources
UnbindResources( pd3dDeviceCtx );
}
void UpdateConstantBuffer(ID3D11DeviceContext *pDeviceCtx, ID3D11Buffer *pCB, const void *pData, size_t DataSize)
{
D3D11_MAPPED_SUBRESOURCE MappedData;
pDeviceCtx->Map(pCB, 0, D3D11_MAP_WRITE_DISCARD, 0, &MappedData);
memcpy(MappedData.pData, pData, DataSize);
pDeviceCtx->Unmap(pCB, 0);
}
void CLightSctrPostProcess :: DefineMacros(class CD3DShaderMacroHelper &Macros)
{
Macros.AddShaderMacro("NUM_EPIPOLAR_SLICES", m_PostProcessingAttribs.m_uiNumEpipolarSlices);
Macros.AddShaderMacro("MAX_SAMPLES_IN_SLICE", m_PostProcessingAttribs.m_uiMaxSamplesInSlice);
Macros.AddShaderMacro("OPTIMIZE_SAMPLE_LOCATIONS", m_PostProcessingAttribs.m_bOptimizeSampleLocations);
Macros.AddShaderMacro("LIGHT_TYPE", m_PostProcessingAttribs.m_uiLightType);
Macros.AddShaderMacro("STAINED_GLASS", m_PostProcessingAttribs.m_bStainedGlass);
Macros.AddShaderMacro("ACCEL_STRUCT", m_PostProcessingAttribs.m_uiAccelStruct);
Macros.AddShaderMacro("INSCTR_INTGL_EVAL_METHOD", m_PostProcessingAttribs.m_uiInsctrIntglEvalMethod);
Macros.AddShaderMacro("ANISOTROPIC_PHASE_FUNCTION", m_PostProcessingAttribs.m_bAnisotropicPhaseFunction);
{
std::stringstream ss;
ss<<"float2("<<m_uiBackBufferWidth<<","<<m_uiBackBufferHeight<<")";
Macros.AddShaderMacro("SCREEN_RESLOUTION", ss.str());
}
}
void CLightSctrPostProcess :: ReconstructCameraSpaceZ(SFrameAttribs &FrameAttribs)
{
if( !m_ReconstrCamSpaceZTech.IsValid() )
{
CD3DShaderMacroHelper Macros;
DefineMacros(Macros);
Macros.Finalize();
m_ReconstrCamSpaceZTech.SetDeviceAndContext(FrameAttribs.pd3dDevice, FrameAttribs.pd3dDeviceContext);
m_ReconstrCamSpaceZTech.CreatePixelShaderFromFile( m_strEffectPath, "ReconstructCameraSpaceZPS", Macros );
m_ReconstrCamSpaceZTech.SetVS( m_pGenerateScreenSizeQuadVS );
m_ReconstrCamSpaceZTech.SetDS( m_pDisableDepthTestDS );
m_ReconstrCamSpaceZTech.SetRS( m_pSolidFillNoCullRS );
m_ReconstrCamSpaceZTech.SetBS( m_pDefaultBS );
}
// Depth buffer is non-linear and cannot be interpolated directly
// We have to reconstruct camera space z to be able to use bilinear filtering
// Set render target first, because depth buffer is still bound on output and it must be unbound
FrameAttribs.pd3dDeviceContext->OMSetRenderTargets(1, &m_ptex2DCameraSpaceZRTV.p, NULL);
// Texture2D<float> g_tex2DCamSpaceZ : register( t0 );
FrameAttribs.pd3dDeviceContext->PSSetShaderResources(0, 1, &FrameAttribs.ptex2DDepthBufferSRV);
RenderQuad( FrameAttribs.pd3dDeviceContext,
m_ReconstrCamSpaceZTech,
m_uiBackBufferWidth, m_uiBackBufferHeight );
FrameAttribs.pd3dDeviceContext->OMSetRenderTargets(0, NULL, NULL);
}
void CLightSctrPostProcess :: RenderSliceEndpoints(SFrameAttribs &FrameAttribs)
{
if( !m_RendedSliceEndpointsTech.IsValid() )
{
m_RendedSliceEndpointsTech.SetDeviceAndContext(FrameAttribs.pd3dDevice, FrameAttribs.pd3dDeviceContext);
CD3DShaderMacroHelper Macros;
DefineMacros(Macros);
Macros.Finalize();
m_RendedSliceEndpointsTech.CreatePixelShaderFromFile( m_strEffectPath, "GenerateSliceEndpointsPS", Macros );
m_RendedSliceEndpointsTech.SetVS( m_pGenerateScreenSizeQuadVS );
m_RendedSliceEndpointsTech.SetDS( m_pDisableDepthTestDS );
m_RendedSliceEndpointsTech.SetRS( m_pSolidFillNoCullRS );
m_RendedSliceEndpointsTech.SetBS( m_pDefaultBS );
}
ID3D11RenderTargetView *ppRTVs[] = {m_ptex2DSliceEndpointsRTV};
FrameAttribs.pd3dDeviceContext->OMSetRenderTargets(_countof(ppRTVs), ppRTVs, NULL);
RenderQuad( FrameAttribs.pd3dDeviceContext, m_RendedSliceEndpointsTech,
m_PostProcessingAttribs.m_uiNumEpipolarSlices, 1 );
FrameAttribs.pd3dDeviceContext->OMSetRenderTargets(0, NULL, NULL);
}
void CLightSctrPostProcess :: RenderCoordinateTexture(SFrameAttribs &FrameAttribs)
{
if( !m_RendedCoordTexTech.IsValid() )
{
m_RendedCoordTexTech.SetDeviceAndContext(FrameAttribs.pd3dDevice, FrameAttribs.pd3dDeviceContext);
CD3DShaderMacroHelper Macros;
DefineMacros(Macros);
Macros.Finalize();
m_RendedCoordTexTech.CreatePixelShaderFromFile( m_strEffectPath, "GenerateCoordinateTexturePS", Macros );
m_RendedCoordTexTech.SetVS( m_pGenerateScreenSizeQuadVS );
m_RendedCoordTexTech.SetDS( m_pDisableDepthTestIncrStencilDS );
m_RendedCoordTexTech.SetRS( m_pSolidFillNoCullRS );
m_RendedCoordTexTech.SetBS( m_pDefaultBS );
}
// Coordinate texture is a texture with dimensions [Total Samples X Num Slices]
// Texel t[i,j] contains projection-space screen cooridantes of the i-th sample in j-th epipolar slice
ID3D11RenderTargetView *ppRTVs[] = {m_ptex2DCoordianteTextureRTV, m_ptex2DEpipolarCamSpaceZRTV};
FrameAttribs.pd3dDeviceContext->OMSetRenderTargets(_countof(ppRTVs), ppRTVs, m_ptex2DEpipolarImageDSV);
static const float fInvalidCoordinate = -1e+10;
float InvalidCoords[] = {fInvalidCoordinate, fInvalidCoordinate, fInvalidCoordinate, fInvalidCoordinate};
// Clear both render targets with values that can't be correct projection space coordinates and camera space Z:
FrameAttribs.pd3dDeviceContext->ClearRenderTargetView(m_ptex2DCoordianteTextureRTV, InvalidCoords);
FrameAttribs.pd3dDeviceContext->ClearRenderTargetView(m_ptex2DEpipolarCamSpaceZRTV, InvalidCoords);
// Clear depth stencil view. Since we use stencil part only, there is no need to clear depth
// Set stencil value to 0
FrameAttribs.pd3dDeviceContext->ClearDepthStencilView(m_ptex2DEpipolarImageDSV, D3D11_CLEAR_STENCIL, 1.0f, 0);
ID3D11ShaderResourceView *pSRVs[] =
{
m_ptex2DCameraSpaceZSRV, // Texture2D<float> g_tex2DCamSpaceZ : register( t0 );
NULL, // Unused : register( t1 )
NULL, // Unused : register( t2 )
NULL, // Unused : register( t3 )
m_ptex2DSliceEndpointsSRV, // Texture2D<float4> g_tex2DSliceEndPoints : register( t4 );
};
FrameAttribs.pd3dDeviceContext->PSSetShaderResources(0, _countof(pSRVs), pSRVs);
// Depth stencil state is configured to always increment stencil value. If coordinates are outside the screen,
// the pixel shader discards the pixel and stencil value is left untouched. All such pixels will be skipped from
// further processing
RenderQuad( FrameAttribs.pd3dDeviceContext, m_RendedCoordTexTech,
m_PostProcessingAttribs.m_uiMaxSamplesInSlice, m_PostProcessingAttribs.m_uiNumEpipolarSlices );
FrameAttribs.pd3dDeviceContext->OMSetRenderTargets(0, NULL, NULL);
}
void CLightSctrPostProcess :: RefineSampleLocations(SFrameAttribs &FrameAttribs)
{
if( !m_RefineSampleLocationsTech.IsValid() )
{
m_RefineSampleLocationsTech.SetDeviceAndContext(FrameAttribs.pd3dDevice, FrameAttribs.pd3dDeviceContext);
// Thread group size must be at least as large as initial sample step
m_uiSampleRefinementCSThreadGroupSize = max( m_uiSampleRefinementCSMinimumThreadGroupSize, m_PostProcessingAttribs.m_uiInitialSampleStepInSlice );
// Thread group size cannot be larger than the total number of samples in slice
m_uiSampleRefinementCSThreadGroupSize = min( m_uiSampleRefinementCSThreadGroupSize, m_PostProcessingAttribs.m_uiMaxSamplesInSlice );
CD3DShaderMacroHelper Macros;
DefineMacros(Macros);
Macros.AddShaderMacro("INITIAL_SAMPLE_STEP", m_PostProcessingAttribs.m_uiInitialSampleStepInSlice);
Macros.AddShaderMacro("THREAD_GROUP_SIZE" , m_uiSampleRefinementCSThreadGroupSize );
Macros.Finalize();
m_RefineSampleLocationsTech.CreateComputeShaderFromFile( L"RefineSampleLocations.fx", "RefineSampleLocationsCS", Macros );
}
//Texture2D<float2> g_tex2DCoordinates : register( t1 );
//Texture2D<float> g_tex2DEpipolarCamSpaceZ : register( t2 );
ID3D11ShaderResourceView *pSRVs[] = {m_ptex2DCoordianteTextureSRV, m_ptex2DEpipolarCamSpaceZSRV};
FrameAttribs.pd3dDeviceContext->CSSetShaderResources(1, 2, pSRVs);
FrameAttribs.pd3dDeviceContext->CSSetUnorderedAccessViews(0, 1, &m_ptex2DInterpolationSourcesUAV.p, NULL);
// Using small group size is inefficient since a lot of SIMD lanes become idle
m_RefineSampleLocationsTech.Apply();
FrameAttribs.pd3dDeviceContext->Dispatch( m_PostProcessingAttribs.m_uiMaxSamplesInSlice/m_uiSampleRefinementCSThreadGroupSize,
m_PostProcessingAttribs.m_uiNumEpipolarSlices,
1);
UnbindResources( FrameAttribs.pd3dDeviceContext );
}
void CLightSctrPostProcess :: MarkRayMarchingSamples(SFrameAttribs &FrameAttribs)
{
if( !m_MarkRayMarchingSamplesInStencilTech.IsValid() )
{
CD3DShaderMacroHelper Macros;
DefineMacros(Macros);
Macros.Finalize();
m_MarkRayMarchingSamplesInStencilTech.SetDeviceAndContext(FrameAttribs.pd3dDevice, FrameAttribs.pd3dDeviceContext);
m_MarkRayMarchingSamplesInStencilTech.CreatePixelShaderFromFile( m_strEffectPath, "MarkRayMarchingSamplesInStencilPS", Macros );
m_MarkRayMarchingSamplesInStencilTech.SetVS( m_pGenerateScreenSizeQuadVS );
m_MarkRayMarchingSamplesInStencilTech.SetDS( m_pNoDepth_StEqual_IncrStencilDS, 1 );
m_MarkRayMarchingSamplesInStencilTech.SetRS( m_pSolidFillNoCullRS );
m_MarkRayMarchingSamplesInStencilTech.SetBS( m_pDefaultBS );
}
// Mark ray marching samples in the stencil
// The depth stencil state is configured to pass only pixels, whose stencil value equals 1. Thus all epipolar samples with
// coordinates outsied the screen (generated on the previous pass) are automatically discarded. The pixel shader only
// passes samples which are interpolated from themselves, the rest are discarded. Thus after this pass all ray
// marching samples will be marked with 2 in stencil
ID3D11RenderTargetView *pDummyRTV = NULL;
FrameAttribs.pd3dDeviceContext->OMSetRenderTargets(1, &pDummyRTV, m_ptex2DEpipolarImageDSV);
FrameAttribs.pd3dDeviceContext->PSSetShaderResources(7, 1, &m_ptex2DInterpolationSourcesSRV.p); // Texture2D<uint2> g_tex2DInterpolationSource : register( t7 );
RenderQuad( FrameAttribs.pd3dDeviceContext,
m_MarkRayMarchingSamplesInStencilTech,
m_PostProcessingAttribs.m_uiMaxSamplesInSlice, m_PostProcessingAttribs.m_uiNumEpipolarSlices );
FrameAttribs.pd3dDeviceContext->OMSetRenderTargets(0, NULL, NULL);
}
void CLightSctrPostProcess :: Build1DMinMaxMipMap(SFrameAttribs &FrameAttribs)
{
{
if( !m_RenderSliceUVDirInSMTech.IsValid() )
{
CD3DShaderMacroHelper Macros;
DefineMacros(Macros);
Macros.Finalize();
m_RenderSliceUVDirInSMTech.SetDeviceAndContext(FrameAttribs.pd3dDevice, FrameAttribs.pd3dDeviceContext);
m_RenderSliceUVDirInSMTech.CreatePixelShaderFromFile( m_strEffectPath, "RenderSliceUVDirInShadowMapTexturePS", Macros );
m_RenderSliceUVDirInSMTech.SetVS( m_pGenerateScreenSizeQuadVS );
m_RenderSliceUVDirInSMTech.SetDS( m_pDisableDepthTestDS );
m_RenderSliceUVDirInSMTech.SetRS( m_pSolidFillNoCullRS );
m_RenderSliceUVDirInSMTech.SetBS( m_pDefaultBS );
}
// Render [Num Slices x 1] texture containing slice direction in shadow map UV space
FrameAttribs.pd3dDeviceContext->OMSetRenderTargets( 1, &m_ptex2DSliceUVDirAndOriginRTV.p, NULL);
ID3D11ShaderResourceView *pSRVs[] =
{
m_ptex2DCameraSpaceZSRV, // Texture2D<float> g_tex2DCamSpaceZ : register( t0 );
NULL, // Unused : register( t1 )
NULL, // Unused : register( t2 )
NULL, // Unused : register( t3 )
m_ptex2DSliceEndpointsSRV, // Texture2D<float4> g_tex2DSliceEndPoints : register( t4 );
};
FrameAttribs.pd3dDeviceContext->PSSetShaderResources(0, _countof(pSRVs), pSRVs);
RenderQuad( FrameAttribs.pd3dDeviceContext,
m_RenderSliceUVDirInSMTech,
m_PostProcessingAttribs.m_uiNumEpipolarSlices, 1 );
FrameAttribs.pd3dDeviceContext->OMSetRenderTargets(0, NULL, NULL);
}
{
if( !m_InitializeMinMaxShadowMapTech.IsValid() )
{
CD3DShaderMacroHelper Macros;
DefineMacros(Macros);
Macros.Finalize();
m_InitializeMinMaxShadowMapTech.SetDeviceAndContext(FrameAttribs.pd3dDevice, FrameAttribs.pd3dDeviceContext);
m_InitializeMinMaxShadowMapTech.CreatePixelShaderFromFile( m_strEffectPath, "InitializeMinMaxShadowMapPS", Macros );
m_InitializeMinMaxShadowMapTech.SetVS( m_pGenerateScreenSizeQuadVS );
m_InitializeMinMaxShadowMapTech.SetDS( m_pDisableDepthTestDS );
m_InitializeMinMaxShadowMapTech.SetRS( m_pSolidFillNoCullRS );
m_InitializeMinMaxShadowMapTech.SetBS( m_pDefaultBS );
}
if( !m_ComputeMinMaxSMLevelTech.IsValid() )
{
CD3DShaderMacroHelper Macros;
DefineMacros(Macros);
Macros.Finalize();
m_ComputeMinMaxSMLevelTech.SetDeviceAndContext(FrameAttribs.pd3dDevice, FrameAttribs.pd3dDeviceContext);
m_ComputeMinMaxSMLevelTech.CreatePixelShaderFromFile( m_strEffectPath, "ComputeMinMaxShadowMapLevelPS", Macros );
m_ComputeMinMaxSMLevelTech.SetVS( m_pGenerateScreenSizeQuadVS );
m_ComputeMinMaxSMLevelTech.SetDS( m_pDisableDepthTestDS );
m_ComputeMinMaxSMLevelTech.SetRS( m_pSolidFillNoCullRS );
m_ComputeMinMaxSMLevelTech.SetBS( m_pDefaultBS );
}
// Computing min/max mip map using compute shader is much slower because a lot of threads are idle
UINT uiXOffset = 0;
UINT uiPrevXOffset = 0;
UINT uiParity = 0;
CComPtr<ID3D11Resource> presMinMaxShadowMap0, presMinMaxShadowMap1;
m_ptex2DMinMaxShadowMapRTV[0]->GetResource(&presMinMaxShadowMap0);
m_ptex2DMinMaxShadowMapRTV[1]->GetResource(&presMinMaxShadowMap1);
// Note that we start rendering min/max shadow map from step == 2
for(UINT iStep = 2; iStep <= m_PostProcessingAttribs.m_uiMaxShadowMapStep; iStep *=2, uiParity = (uiParity+1)%2 )
{
// Use two buffers which are in turn used as the source and destination
FrameAttribs.pd3dDeviceContext->OMSetRenderTargets( 1, &m_ptex2DMinMaxShadowMapRTV[uiParity].p, NULL);
if( iStep == 2 )
{
// At the initial pass, the shader gathers 8 depths which will be used for
// PCF filtering at the sample location and its next neighbor along the slice
// and outputs min/max depths
// Texture2D<float4> g_tex2DSliceUVDirAndOrigin : register( t2 );
// Texture2D<float2> g_tex2DLightSpaceDepthMap : register( t3 );
ID3D11ShaderResourceView *pSRVs[] = {m_ptex2DSliceUVDirAndOriginSRV, FrameAttribs.ptex2DShadowMapSRV,};
FrameAttribs.pd3dDeviceContext->PSSetShaderResources( 2, _countof(pSRVs), pSRVs );
}
else
{
// At the subsequent passes, the shader loads two min/max values from the next finer level
// to compute next level of the binary tree
// Set source and destination min/max data offsets:
SMiscDynamicParams MiscDynamicParams = {NULL};
MiscDynamicParams.ui4SrcMinMaxLevelXOffset = uiPrevXOffset;
MiscDynamicParams.ui4DstMinMaxLevelXOffset = uiXOffset;
UpdateConstantBuffer(FrameAttribs.pd3dDeviceContext, m_pcbMiscParams, &MiscDynamicParams, sizeof(MiscDynamicParams));
//cbuffer cbMiscDynamicParams : register( b4 )
FrameAttribs.pd3dDeviceContext->PSSetConstantBuffers(4, 1, &m_pcbMiscParams.p);
// Texture2D<float2> g_tex2DMinMaxLightSpaceDepth : register( t4 );
FrameAttribs.pd3dDeviceContext->PSSetShaderResources( 4, 1, &m_ptex2DMinMaxShadowMapSRV[ (uiParity+1)%2 ].p );
}
RenderQuad( FrameAttribs.pd3dDeviceContext,
(iStep>2) ? m_ComputeMinMaxSMLevelTech : m_InitializeMinMaxShadowMapTech,
m_PostProcessingAttribs.m_uiMinMaxShadowMapResolution / iStep, m_PostProcessingAttribs.m_uiNumEpipolarSlices,
uiXOffset, 0 );
// All the data must reside in 0-th texture, so copy current level, if necessary, from 1-st texture
if( uiParity == 1 )
{
D3D11_BOX SrcBox;
SrcBox.left = uiXOffset;
SrcBox.right = uiXOffset + m_PostProcessingAttribs.m_uiMinMaxShadowMapResolution / iStep;
SrcBox.top = 0;
SrcBox.bottom = m_PostProcessingAttribs.m_uiNumEpipolarSlices;
SrcBox.front = 0;
SrcBox.back = 1;
FrameAttribs.pd3dDeviceContext->CopySubresourceRegion(presMinMaxShadowMap0, 0, uiXOffset, 0, 0,
presMinMaxShadowMap1, 0, &SrcBox);
}
uiPrevXOffset = uiXOffset;
uiXOffset += m_PostProcessingAttribs.m_uiMinMaxShadowMapResolution / iStep;
}
}
FrameAttribs.pd3dDeviceContext->OMSetRenderTargets(0, NULL, NULL);
}
void CLightSctrPostProcess :: DoRayMarching(SFrameAttribs &FrameAttribs, UINT uiMaxStepsAlongRay)
{
CRenderTechnique &DoRayMarchTech = m_DoRayMarchTech[m_PostProcessingAttribs.m_uiAccelStruct > ACCEL_STRUCT_NONE ? 1 : 0];
if( !DoRayMarchTech.IsValid() )
{
CD3DShaderMacroHelper Macros;
DefineMacros(Macros);
Macros.Finalize();
DoRayMarchTech.SetDeviceAndContext(FrameAttribs.pd3dDevice, FrameAttribs.pd3dDeviceContext);
DoRayMarchTech.CreatePixelShaderFromFile( m_strEffectPath, m_PostProcessingAttribs.m_uiAccelStruct > ACCEL_STRUCT_NONE ? "RayMarchMinMaxOptPS" : "RayMarchPS", Macros );
DoRayMarchTech.SetVS( m_pGenerateScreenSizeQuadVS );
// Sample locations for which ray marching should be performed will be marked in stencil with 2
DoRayMarchTech.SetDS( m_pNoDepth_StEqual_IncrStencilDS, 2 );
DoRayMarchTech.SetRS( m_pSolidFillNoCullRS );
DoRayMarchTech.SetBS( m_pDefaultBS );
}
//float BlackColor[] = {0,0,0,0};
// NOTE: this is for debug purposes only:
//FrameAttribs.pd3dDeviceContext->ClearRenderTargetView(m_ptex2DInitialScatteredLightRTV, BlackColor);
FrameAttribs.pd3dDeviceContext->OMSetRenderTargets(1, &m_ptex2DInitialScatteredLightRTV.p, m_ptex2DEpipolarImageDSV);
SMiscDynamicParams MiscDynamicParams = {NULL};
MiscDynamicParams.fMaxStepsAlongRay = static_cast<float>( uiMaxStepsAlongRay );
UpdateConstantBuffer(FrameAttribs.pd3dDeviceContext, m_pcbMiscParams, &MiscDynamicParams, sizeof(MiscDynamicParams));
//cbuffer cbMiscDynamicParams : register( b4 )
FrameAttribs.pd3dDeviceContext->PSSetConstantBuffers(4, 1, &m_pcbMiscParams.p);
ID3D11ShaderResourceView *pSRVs[] =
{
m_ptex2DCameraSpaceZSRV, // Texture2D<float> g_tex2DCamSpaceZ : register( t0 );
m_ptex2DCoordianteTextureSRV, // Texture2D<float2> g_tex2DCoordinates : register( t1 );
m_ptex2DSliceUVDirAndOriginSRV, // Texture2D<float4> g_tex2DSliceUVDirAndOrigin : register( t2 );
FrameAttribs.ptex2DShadowMapSRV, // Texture2D<float> g_tex2DLightSpaceDepthMap : register( t3 );
m_ptex2DMinMaxShadowMapSRV[0], // Texture2D<float2> g_tex2DMinMaxLightSpaceDepth : register( t4 );
FrameAttribs.ptex2DStainedGlassSRV, // Texture2D<float4> g_tex2DStainedGlassColorDepth : register( t5 );
m_ptex2DPrecomputedPointLightInsctrSRV//Texture2D<float3> g_tex2DPrecomputedPointLightInsctr: register( t6 );
};
FrameAttribs.pd3dDeviceContext->PSSetShaderResources(0, _countof(pSRVs), pSRVs);
// Depth stencil view now contains 2 for these pixels, for which ray marchings is to be performed
// Depth stencil state is configured to pass only these pixels and discard the rest
RenderQuad( FrameAttribs.pd3dDeviceContext,
DoRayMarchTech,
m_PostProcessingAttribs.m_uiMaxSamplesInSlice, m_PostProcessingAttribs.m_uiNumEpipolarSlices );
FrameAttribs.pd3dDeviceContext->OMSetRenderTargets(0, NULL, NULL);
}
void CLightSctrPostProcess :: InterpolateInsctrIrradiance(SFrameAttribs &FrameAttribs)
{
if( !m_InterpolateIrradianceTech.IsValid() )
{
CD3DShaderMacroHelper Macros;
DefineMacros(Macros);
Macros.Finalize();
m_InterpolateIrradianceTech.SetDeviceAndContext(FrameAttribs.pd3dDevice, FrameAttribs.pd3dDeviceContext);
m_InterpolateIrradianceTech.CreatePixelShaderFromFile( m_strEffectPath, "InterpolateIrradiancePS", Macros );
m_InterpolateIrradianceTech.SetVS( m_pGenerateScreenSizeQuadVS );
m_InterpolateIrradianceTech.SetDS( m_pDisableDepthTestDS );
m_InterpolateIrradianceTech.SetRS( m_pSolidFillNoCullRS );
m_InterpolateIrradianceTech.SetBS( m_pDefaultBS );
}
FrameAttribs.pd3dDeviceContext->OMSetRenderTargets(1, &m_ptex2DScatteredLightRTV.p, m_ptex2DEpipolarImageDSV);
ID3D11ShaderResourceView *pSRVs[] =
{
NULL, // Unused : register( t0 );
NULL, // Unused : register( t1 );
NULL, // Unused : register( t2 );
NULL, // Unused : register( t3 );
NULL, // Unused : register( t4 );
NULL, // Unused : register( t5 );
m_ptex2DInitialScatteredLightSRV, // Texture2D<uint2> g_tex2DInitialInsctrIrradiance: register( t6 );
m_ptex2DInterpolationSourcesSRV // Texture2D<float3> g_tex2DInterpolationSource : register( t7 );
};
FrameAttribs.pd3dDeviceContext->PSSetShaderResources(0, _countof(pSRVs), pSRVs);
RenderQuad( FrameAttribs.pd3dDeviceContext,
m_InterpolateIrradianceTech,
m_PostProcessingAttribs.m_uiMaxSamplesInSlice, m_PostProcessingAttribs.m_uiNumEpipolarSlices );
FrameAttribs.pd3dDeviceContext->OMSetRenderTargets(0, NULL, NULL);
}
void CLightSctrPostProcess :: UnwarpEpipolarScattering(SFrameAttribs &FrameAttribs)
{
int iApplyBackground = (m_PostProcessingAttribs.m_fDownscaleFactor == 1.f) ? 1 : 0;
CRenderTechnique &UnwarpEpipolarSctrImgTech = m_UnwarpEpipolarSctrImgTech[iApplyBackground];
if( !UnwarpEpipolarSctrImgTech.IsValid() )
{
CD3DShaderMacroHelper Macros;
DefineMacros(Macros);
Macros.Finalize();
UnwarpEpipolarSctrImgTech.SetDeviceAndContext(FrameAttribs.pd3dDevice, FrameAttribs.pd3dDeviceContext);
UnwarpEpipolarSctrImgTech.CreatePixelShaderFromFile( m_strEffectPath, iApplyBackground ? "ApplyInscatteredRadiancePS" : "UnwarpEpipolarInsctrImagePS", Macros );
UnwarpEpipolarSctrImgTech.SetVS( m_pGenerateScreenSizeQuadVS );
UnwarpEpipolarSctrImgTech.SetDS( m_pDisableDepthTestIncrStencilDS );
UnwarpEpipolarSctrImgTech.SetRS( m_pSolidFillNoCullRS );
UnwarpEpipolarSctrImgTech.SetBS( m_pDefaultBS );
}
ID3D11ShaderResourceView *pSRVs[] =
{
m_ptex2DCameraSpaceZSRV, // Texture2D<float> g_tex2DCamSpaceZ : register( t0 );
FrameAttribs.ptex2DSrcColorBufferSRV, // Texture2D<float4> g_tex2DColorBuffer : register( t1 );
m_ptex2DEpipolarCamSpaceZSRV, // Texture2D<float> g_tex2DEpipolarCamSpaceZ : register( t2 );
m_ptex2DScatteredLightSRV, // Texture2D<float3> g_tex2DScatteredColor : register( t3 );
m_ptex2DSliceEndpointsSRV // Texture2D<float4> g_tex2DSliceEndPoints : register( t4 );
};
FrameAttribs.pd3dDeviceContext->PSSetShaderResources(0, _countof(pSRVs), pSRVs);
// If downscale factor is 1, then we will unwarp inscattering image and apply it to attenuated backgorund
// If downscale factor is > 1, then we will unwarp inscattering image only, then upscale it and only after that apply to attenuated backgorund
// Depth stenci state is configured to always increase stencil values. Thus these samples that are sucessully interpolated
// will have 1 in stencil. The remaining will be discarded and as a result keep 0 value. These samples will be lately correct
// through additional ray marching pass
RenderQuad( FrameAttribs.pd3dDeviceContext, UnwarpEpipolarSctrImgTech );
}
void CLightSctrPostProcess :: FixInscatteringAtDepthBreaks(SFrameAttribs &FrameAttribs, bool bAttenuateBackground, UINT uiMaxStepsAlongRay)
{
CRenderTechnique &FixInsctrAtDepthBreaksTech = m_FixInsctrAtDepthBreaksTech[bAttenuateBackground ? 1 : 0];
if( !FixInsctrAtDepthBreaksTech .IsValid() )
{
CD3DShaderMacroHelper Macros;
DefineMacros(Macros);
Macros.Finalize();
FixInsctrAtDepthBreaksTech.SetDeviceAndContext(FrameAttribs.pd3dDevice, FrameAttribs.pd3dDeviceContext);
FixInsctrAtDepthBreaksTech.CreatePixelShaderFromFile( m_strEffectPath, bAttenuateBackground ? "FixAndApplyInscatteredRadiancePS" : "FixInscatteredRadiancePS", Macros );
FixInsctrAtDepthBreaksTech.SetVS( m_pGenerateScreenSizeQuadVS );
FixInsctrAtDepthBreaksTech.SetDS( m_pNoDepth_StEqual_IncrStencilDS, 0 );
FixInsctrAtDepthBreaksTech.SetRS( m_pSolidFillNoCullRS );
FixInsctrAtDepthBreaksTech.SetBS( m_pDefaultBS );
}
ID3D11ShaderResourceView *pSRVs[] =
{
m_ptex2DCameraSpaceZSRV, // Texture2D<float> g_tex2DCamSpaceZ : register( t0 );
FrameAttribs.ptex2DSrcColorBufferSRV, // Texture2D<float4> g_tex2DColorBuffer : register( t1 );
m_ptex2DSliceUVDirAndOriginSRV, // Texture2D<float4> g_tex2DSliceUVDirAndOrigin : register( t2 );
FrameAttribs.ptex2DShadowMapSRV, // Texture2D<float> g_tex2DLightSpaceDepthMap : register( t3 );
m_ptex2DMinMaxShadowMapSRV[0], // Texture2D<float2> g_tex2DMinMaxLightSpaceDepth : register( t4 );
FrameAttribs.ptex2DStainedGlassSRV, // Texture2D<float4> g_tex2DStainedGlassColorDepth : register( t5 );
m_ptex2DPrecomputedPointLightInsctrSRV//Texture2D<float3> g_tex2DPrecomputedPointLightInsctr: register( t6 );
};
FrameAttribs.pd3dDeviceContext->PSSetShaderResources(0, _countof(pSRVs), pSRVs);
SMiscDynamicParams MiscDynamicParams = {NULL};
MiscDynamicParams.fMaxStepsAlongRay = static_cast<float>( uiMaxStepsAlongRay );
UpdateConstantBuffer(FrameAttribs.pd3dDeviceContext, m_pcbMiscParams, &MiscDynamicParams, sizeof(MiscDynamicParams));
//cbuffer cbMiscDynamicParams : register( b4 )
FrameAttribs.pd3dDeviceContext->PSSetConstantBuffers(4, 1, &m_pcbMiscParams.p);
RenderQuad( FrameAttribs.pd3dDeviceContext, FixInsctrAtDepthBreaksTech );
}
void CLightSctrPostProcess :: UpscaleInscatteringRadiance(SFrameAttribs &FrameAttribs)
{
if( !m_UpscaleInsctrdRadianceTech.IsValid() )
{
CD3DShaderMacroHelper Macros;
DefineMacros(Macros);
Macros.Finalize();
m_UpscaleInsctrdRadianceTech.SetDeviceAndContext(FrameAttribs.pd3dDevice, FrameAttribs.pd3dDeviceContext);
m_UpscaleInsctrdRadianceTech.CreatePixelShaderFromFile( m_strEffectPath, "UpscaleInscatteredRadiancePS", Macros );
m_UpscaleInsctrdRadianceTech.SetVS( m_pGenerateScreenSizeQuadVS );
m_UpscaleInsctrdRadianceTech.SetDS( m_pDisableDepthTestIncrStencilDS );
m_UpscaleInsctrdRadianceTech.SetRS( m_pSolidFillNoCullRS );
m_UpscaleInsctrdRadianceTech.SetBS( m_pDefaultBS );
}
ID3D11ShaderResourceView *pSRVs[] =
{
m_ptex2DCameraSpaceZSRV, // Texture2D<float> g_tex2DCamSpaceZ : register( t0 );
FrameAttribs.ptex2DSrcColorBufferSRV, // Texture2D<float4> g_tex2DColorBuffer : register( t1 );
m_ptex2DDownscaledScatteredLightSRV // Texture2D<float3> g_tex2DDownscaledInsctrRadiance: register( t2 );
};
FrameAttribs.pd3dDeviceContext->PSSetShaderResources(0, _countof(pSRVs), pSRVs);
RenderQuad( FrameAttribs.pd3dDeviceContext, m_UpscaleInsctrdRadianceTech );
}
void CLightSctrPostProcess :: RenderSampleLocations(SFrameAttribs &FrameAttribs)
{
if( !m_RenderSampleLocationsTech.IsValid() )
{
CD3DShaderMacroHelper Macros;
DefineMacros(Macros);
Macros.Finalize();
m_RenderSampleLocationsTech.SetDeviceAndContext(FrameAttribs.pd3dDevice, FrameAttribs.pd3dDeviceContext);
m_RenderSampleLocationsTech.CreateVGPShadersFromFile( m_strEffectPath, "PassThroughVS", "RenderSamplePositionsGS", "RenderSampleLocationsPS", Macros );
m_RenderSampleLocationsTech.SetDS( m_pDisableDepthTestDS );
m_RenderSampleLocationsTech.SetRS( m_pSolidFillNoCullRS );
D3D11_BLEND_DESC OverBlendStateDesc;
ZeroMemory(&OverBlendStateDesc, sizeof(OverBlendStateDesc));
OverBlendStateDesc.IndependentBlendEnable = FALSE;
OverBlendStateDesc.RenderTarget[0].RenderTargetWriteMask = D3D11_COLOR_WRITE_ENABLE_ALL;
OverBlendStateDesc.RenderTarget[0].BlendEnable = TRUE;
OverBlendStateDesc.RenderTarget[0].BlendOp = D3D11_BLEND_OP_ADD;
OverBlendStateDesc.RenderTarget[0].BlendOpAlpha = D3D11_BLEND_OP_ADD;
OverBlendStateDesc.RenderTarget[0].DestBlend = D3D11_BLEND_INV_SRC_ALPHA;
OverBlendStateDesc.RenderTarget[0].DestBlendAlpha = D3D11_BLEND_ZERO;
OverBlendStateDesc.RenderTarget[0].SrcBlend = D3D11_BLEND_SRC_ALPHA;
OverBlendStateDesc.RenderTarget[0].SrcBlendAlpha = D3D11_BLEND_ONE;
CComPtr<ID3D11BlendState> pOverBS;
HRESULT hr;
V( FrameAttribs.pd3dDevice->CreateBlendState( &OverBlendStateDesc, &pOverBS) );
m_RenderSampleLocationsTech.SetBS( pOverBS );
}
ID3D11ShaderResourceView *pSRVs[] =
{
NULL,
m_ptex2DCoordianteTextureSRV, // Texture2D<float2> g_tex2DCoordinates : register( t1 );
NULL,
NULL,
NULL,
NULL,
NULL,
m_ptex2DInterpolationSourcesSRV, // Texture2D<uint2> g_tex2DInterpolationSource : register( t7 );
};
FrameAttribs.pd3dDeviceContext->GSSetShaderResources(0, _countof(pSRVs), pSRVs);
FrameAttribs.pd3dDeviceContext->OMSetRenderTargets(1, &FrameAttribs.pDstRTV, NULL);
FrameAttribs.pd3dDeviceContext->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_POINTLIST);
UINT offset[1] = {0};
UINT stride[1] = {0};
ID3D11Buffer *ppBuffers[1] = {0};
// Set the device's first and only vertex buffer with zero stride and offset
FrameAttribs.pd3dDeviceContext->IASetVertexBuffers(0,1,ppBuffers,stride,offset);
// There is no input-layout object and the primitive topology is triangle strip
FrameAttribs.pd3dDeviceContext->IASetInputLayout(NULL);
m_RenderSampleLocationsTech.Apply();
FrameAttribs.pd3dDeviceContext->Draw(m_PostProcessingAttribs.m_uiMaxSamplesInSlice * m_PostProcessingAttribs.m_uiNumEpipolarSlices,0);
UnbindResources( FrameAttribs.pd3dDeviceContext );
}
void CLightSctrPostProcess :: PerformPostProcessing(SFrameAttribs &FrameAttribs,
SPostProcessingAttribs &PPAttribs)
{
HRESULT hr;
if( PPAttribs.m_uiNumEpipolarSlices != m_PostProcessingAttribs.m_uiNumEpipolarSlices ||
PPAttribs.m_uiMaxSamplesInSlice != m_PostProcessingAttribs.m_uiMaxSamplesInSlice ||
PPAttribs.m_bOptimizeSampleLocations != m_PostProcessingAttribs.m_bOptimizeSampleLocations )
m_RendedSliceEndpointsTech.Release();
if( PPAttribs.m_uiMaxSamplesInSlice != m_PostProcessingAttribs.m_uiMaxSamplesInSlice )
m_RendedCoordTexTech.Release();
if( PPAttribs.m_uiMaxSamplesInSlice != m_PostProcessingAttribs.m_uiMaxSamplesInSlice ||
PPAttribs.m_uiInitialSampleStepInSlice != m_PostProcessingAttribs.m_uiInitialSampleStepInSlice )
m_RefineSampleLocationsTech.Release();
if( PPAttribs.m_uiAccelStruct != m_PostProcessingAttribs.m_uiAccelStruct )
{
m_InitializeMinMaxShadowMapTech.Release();
m_ComputeMinMaxSMLevelTech.Release();
}
if( PPAttribs.m_uiLightType != m_PostProcessingAttribs.m_uiLightType )
m_RenderSliceUVDirInSMTech.Release();
if( PPAttribs.m_bStainedGlass != m_PostProcessingAttribs.m_bStainedGlass ||
PPAttribs.m_uiLightType != m_PostProcessingAttribs.m_uiLightType ||
PPAttribs.m_uiAccelStruct != m_PostProcessingAttribs.m_uiAccelStruct ||
PPAttribs.m_uiInsctrIntglEvalMethod != m_PostProcessingAttribs.m_uiInsctrIntglEvalMethod||
PPAttribs.m_bAnisotropicPhaseFunction != m_PostProcessingAttribs.m_bAnisotropicPhaseFunction)
{
for(int i=0; i<_countof(m_DoRayMarchTech); ++i)
m_DoRayMarchTech[i].Release();
}
if( PPAttribs.m_uiNumEpipolarSlices != m_PostProcessingAttribs.m_uiNumEpipolarSlices ||
PPAttribs.m_uiMaxSamplesInSlice != m_PostProcessingAttribs.m_uiMaxSamplesInSlice ||
PPAttribs.m_uiLightType != m_PostProcessingAttribs.m_uiLightType )
{
for(int i=0; i<_countof(m_UnwarpEpipolarSctrImgTech); ++i)
m_UnwarpEpipolarSctrImgTech[i].Release();
}
if( PPAttribs.m_bStainedGlass != m_PostProcessingAttribs.m_bStainedGlass ||
PPAttribs.m_uiLightType != m_PostProcessingAttribs.m_uiLightType ||
PPAttribs.m_uiInsctrIntglEvalMethod != m_PostProcessingAttribs.m_uiInsctrIntglEvalMethod ||
PPAttribs.m_bAnisotropicPhaseFunction != m_PostProcessingAttribs.m_bAnisotropicPhaseFunction )
{
for(int i=0; i<_countof(m_FixInsctrAtDepthBreaksTech); ++i)
m_FixInsctrAtDepthBreaksTech[i].Release();
}
if( PPAttribs.m_uiLightType != m_PostProcessingAttribs.m_uiLightType )
m_UpscaleInsctrdRadianceTech.Release();
if( PPAttribs.m_uiMaxSamplesInSlice != m_PostProcessingAttribs.m_uiMaxSamplesInSlice ||