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// This code contains NVIDIA Confidential Information and is disclosed
// under the Mutual Non-Disclosure Agreement.
//
// Notice
// ALL NVIDIA DESIGN SPECIFICATIONS AND CODE ("MATERIALS") ARE PROVIDED "AS IS" NVIDIA MAKES
// NO REPRESENTATIONS, WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO
// THE MATERIALS, AND EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTIES OF NONINFRINGEMENT,
// MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.
//
// NVIDIA Corporation assumes no responsibility for the consequences of use of such
// information or for any infringement of patents or other rights of third parties that may
// result from its use. No license is granted by implication or otherwise under any patent
// or patent rights of NVIDIA Corporation. No third party distribution is allowed unless
// expressly authorized by NVIDIA. Details are subject to change without notice.
// This code supersedes and replaces all information previously supplied.
// NVIDIA Corporation products are not authorized for use as critical
// components in life support devices or systems without express written approval of
// NVIDIA Corporation.
//
// Copyright � 2008- 2013 NVIDIA Corporation. All rights reserved.
//
// NVIDIA Corporation and its licensors retain all intellectual property and proprietary
// rights in and to this software and related documentation and any modifications thereto.
// Any use, reproduction, disclosure or distribution of this software and related
// documentation without an express license agreement from NVIDIA Corporation is
// strictly prohibited.
//
#include "DXUT.h"
#include "ocean_psm.h"
#include "ocean_shader_common.h"
extern HRESULT LoadFile(LPCTSTR FileName, ID3DXBuffer** ppBuffer);
namespace {
enum { kPSMLayersPerSlice = 2 };
}
OceanPSM::OceanPSM()
{
m_pFX = NULL;
m_pPropagatePSMTechnique = NULL;
m_pRenderPSMToUITechnique = NULL;
m_pPSMPropagationMapUAVVariable = NULL;
m_pPSMMapVariable = NULL;
m_pd3dDevice = DXUTGetD3D11Device();
m_pPSMSRV = NULL;
m_pPSMUAV = NULL;
m_pPSMRTV = NULL;
m_PSM_w = 0;
m_PSM_h = 0;
m_PSM_d = 0;
m_PSM_num_slices = 0;
m_PsmBoundsMax = D3DXVECTOR3(1.f,1.f,1.f);
m_PsmBoundsMin = D3DXVECTOR3(-1.f,-1.f,-1.f);
D3DXMatrixIdentity(&m_matPSMView);
D3DXMatrixIdentity(&m_matPSMProj);
D3DXMatrixIdentity(&m_matWorldToPSMUV);
}
OceanPSM::~OceanPSM()
{
SAFE_RELEASE(m_pFX);
SAFE_RELEASE(m_pPSMSRV);
SAFE_RELEASE(m_pPSMUAV);
SAFE_RELEASE(m_pPSMRTV);
}
HRESULT OceanPSM::init( const D3DXVECTOR3& psm_bounds_min,
const D3DXVECTOR3& psm_bounds_max,
int nominal_res
)
{
HRESULT hr;
m_PsmBoundsMin = psm_bounds_min;
m_PsmBoundsMax = psm_bounds_max;
const D3DXVECTOR3 psm_bounds_extents = psm_bounds_max - psm_bounds_min;
const float world_volume_of_psm_bounds = psm_bounds_extents.x * psm_bounds_extents.y * psm_bounds_extents.z;
const float voxel_volume = world_volume_of_psm_bounds / float(nominal_res*nominal_res*nominal_res);
const float voxel_length = powf(voxel_volume,1/3.f);
m_PSM_w = (int)ceilf(psm_bounds_extents.x/voxel_length);
m_PSM_h = (int)ceilf(psm_bounds_extents.y/voxel_length);
m_PSM_d = (int)ceilf(psm_bounds_extents.z/voxel_length);
m_PSM_num_slices = (m_PSM_d/kPSMLayersPerSlice)-1;
SAFE_RELEASE(m_pFX);
ID3DXBuffer* pEffectBuffer = NULL;
V_RETURN(LoadFile(TEXT(".\\Media\\ocean_psm_d3d11.fxo"), &pEffectBuffer));
V_RETURN(D3DX11CreateEffectFromMemory(pEffectBuffer->GetBufferPointer(), pEffectBuffer->GetBufferSize(), 0, m_pd3dDevice, &m_pFX));
pEffectBuffer->Release();
m_pPropagatePSMTechnique = m_pFX->GetTechniqueByName("PropagatePSMTech");
m_pRenderPSMToUITechnique = m_pFX->GetTechniqueByName("RenderPSMToUITech");
m_pPSMPropagationMapUAVVariable = m_pFX->GetVariableByName("g_PSMPropagationMapUAV")->AsUnorderedAccessView();
m_pPSMMapVariable = m_pFX->GetVariableByName("g_PSMMap")->AsShaderResource();
// Create PSM texture
{
D3D11_TEXTURE3D_DESC texDesc;
texDesc.Format = DXGI_FORMAT_R16G16_TYPELESS;
texDesc.Width = m_PSM_w;
texDesc.Height = m_PSM_h;
texDesc.MipLevels = 1;
texDesc.Depth = m_PSM_d/kPSMLayersPerSlice;
// texDesc.SampleDesc.Count = 1;
// texDesc.SampleDesc.Quality = 0;
texDesc.Usage = D3D11_USAGE_DEFAULT;
texDesc.BindFlags = D3D11_BIND_SHADER_RESOURCE | D3D11_BIND_RENDER_TARGET | D3D11_BIND_UNORDERED_ACCESS;
texDesc.CPUAccessFlags = 0;
texDesc.MiscFlags = 0;
ID3D11Texture3D* pTex = NULL;
V_RETURN(m_pd3dDevice->CreateTexture3D(&texDesc, NULL, &pTex));
D3D11_SHADER_RESOURCE_VIEW_DESC srvDesc;
srvDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE3D;
srvDesc.Texture3D.MostDetailedMip = 0;
srvDesc.Texture3D.MipLevels = texDesc.MipLevels;
srvDesc.Format = DXGI_FORMAT_R16G16_UNORM;
V_RETURN(m_pd3dDevice->CreateShaderResourceView(pTex, &srvDesc, &m_pPSMSRV) );
D3D11_RENDER_TARGET_VIEW_DESC rtvDesc;
rtvDesc.ViewDimension = D3D11_RTV_DIMENSION_TEXTURE3D;
rtvDesc.Texture3D.MipSlice = 0;
rtvDesc.Texture3D.FirstWSlice = 0;
rtvDesc.Texture3D.WSize = texDesc.Depth;
rtvDesc.Format = DXGI_FORMAT_R16G16_UNORM;
V_RETURN(m_pd3dDevice->CreateRenderTargetView(pTex, &rtvDesc, &m_pPSMRTV) );
D3D11_UNORDERED_ACCESS_VIEW_DESC uavDesc;
uavDesc.ViewDimension = D3D11_UAV_DIMENSION_TEXTURE3D;
uavDesc.Texture3D.MipSlice = 0;
uavDesc.Texture3D.FirstWSlice = 0;
uavDesc.Texture3D.WSize = texDesc.Depth;
uavDesc.Format = DXGI_FORMAT_R32_UINT;
V_RETURN(m_pd3dDevice->CreateUnorderedAccessView(pTex, &uavDesc, &m_pPSMUAV) );
SAFE_RELEASE(pTex);
}
return S_OK;
}
void OceanPSM::beginRenderToPSM(const D3DXMATRIX& matPSM, ID3D11DeviceContext* pDC)
{
D3DXMatrixInverse(&m_matPSMView,NULL,&matPSM);
// We use proj to scale and translate to PSM from local space
const D3DXVECTOR4 PSM_centre_local = 0.5f * (m_PsmBoundsMax + m_PsmBoundsMin);
const D3DXVECTOR4 PSM_extents_local = m_PsmBoundsMax - m_PsmBoundsMin;
D3DXMATRIX TranslationComponent, ScalingComponent;
D3DXMatrixTranslation(&TranslationComponent, -PSM_centre_local.x, -PSM_centre_local.y, m_PsmBoundsMax.z); // Using z-max because effective light-dir is pointing down
D3DXMatrixScaling(&ScalingComponent, 2.f/PSM_extents_local.x, 2.f/PSM_extents_local.y, 1.f/PSM_extents_local.z);
m_matPSMProj = TranslationComponent * ScalingComponent;
D3DXMATRIX matProjToUV;
D3DXMatrixTranslation(&matProjToUV,0.5f,0.5f,0.f);
matProjToUV._11 = 0.5f;
matProjToUV._22 = -0.5f;
m_matWorldToPSMUV = m_matPSMView * m_matPSMProj * matProjToUV;
// Save rt setup to restore shortly...
m_num_saved_viewports = sizeof(m_saved_viewports)/sizeof(m_saved_viewports[0]);
pDC->RSGetViewports( &m_num_saved_viewports, m_saved_viewports);
pDC->OMSetRenderTargets(1, &m_pPSMRTV, NULL);
const D3D11_VIEWPORT opacityViewport = {0.f, 0.f, FLOAT(m_PSM_w), FLOAT(m_PSM_h), 0.f, 1.f };
pDC->RSSetViewports(1, &opacityViewport);
const D3DXVECTOR4 PSMClearColor(1.f,1.f,1.f,1.f);
pDC->ClearRenderTargetView(m_pPSMRTV, (FLOAT*)&PSMClearColor);
}
void OceanPSM::endRenderToPSM(ID3D11DeviceContext* pDC)
{
// Restore original viewports
pDC->RSSetViewports(m_num_saved_viewports, m_saved_viewports);
// Release RTV
ID3D11RenderTargetView* pNullRTV = NULL;
pDC->OMSetRenderTargets(1, &pNullRTV, NULL);
// Propagate opacity
m_pPSMPropagationMapUAVVariable->SetUnorderedAccessView(m_pPSMUAV);
m_pPropagatePSMTechnique->GetPassByIndex(0)->Apply(0, pDC);
const int num_groups_w = 1 + (m_PSM_w-1)/PSMPropagationCSBlockSize;
const int num_groups_h = 1 + (m_PSM_h-1)/PSMPropagationCSBlockSize;
pDC->Dispatch(num_groups_w,num_groups_h,1);
// Release inputs
m_pPSMPropagationMapUAVVariable->SetUnorderedAccessView(NULL);
m_pPropagatePSMTechnique->GetPassByIndex(0)->Apply(0, pDC);
}
void OceanPSM::renderToUI(ID3D11DeviceContext* pDC)
{
m_pPSMMapVariable->SetResource(m_pPSMSRV);
m_pRenderPSMToUITechnique->GetPassByIndex(0)->Apply(0, pDC);
pDC->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP);
pDC->IASetInputLayout(NULL);
pDC->Draw(4,0);
m_pPSMMapVariable->SetResource(NULL);
m_pRenderPSMToUITechnique->GetPassByIndex(0)->Apply(0, pDC);
}
void OceanPSM::setWriteParams(const OceanPSMParams& params)
{
params.m_pPSMSlicesVariable->SetFloat(float(m_PSM_num_slices));
}
void OceanPSM::setReadParams(const OceanPSMParams& params, const D3DXVECTOR3& tint_color)
{
params.m_pPSMTintVariable->SetFloatVector((FLOAT*)&tint_color);
params.m_pPSMSlicesVariable->SetFloat(float(m_PSM_num_slices));
params.m_pPSMMapVariable->SetResource(m_pPSMSRV);
}
OceanPSMParams::OceanPSMParams(ID3DX11Effect* pFX)
{
m_pPSMMapVariable = pFX->GetVariableByName("g_PSMMap")->AsShaderResource();
m_pPSMSlicesVariable = pFX->GetVariableByName("g_PSMSlices")->AsScalar();
m_pPSMTintVariable = pFX->GetVariableByName("g_PSMTint")->AsVector();
}
void OceanPSM::clearReadParams(const OceanPSMParams& params)
{
params.m_pPSMMapVariable->SetResource(NULL);
}
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