void RevRenderEnviromentHelper::ComputeSHAndSaveToVector( std::vector< unsigned int >* aData, const int& aIndex )
{
float cubeMapColors[3][9];
D3DX11SHProjectCubeMap( RevEngineMain::GetContext(), 3, myCubeMapTexture, &cubeMapColors[0][0], &cubeMapColors[1][0],&cubeMapColors[2][0] );
ComputeSHIrradEnvMapConstantsAndSaveToVector(&cubeMapColors[0][0], &cubeMapColors[1][0],&cubeMapColors[2][0], aData, aIndex );
}
void RevRenderEnviromentHelper::ComputeSHAndSaveToEffect( RevEffect* aEffect )
{
float cubeMapColors[3][9];
D3DX11SHProjectCubeMap( RevEngineMain::GetContext(), 3, myCubeMapTexture, &cubeMapColors[0][0], &cubeMapColors[1][0],&cubeMapColors[2][0] );
ComputeSHIrradEnvMapConstants(&cubeMapColors[0][0], &cubeMapColors[1][0],&cubeMapColors[2][0], aEffect );
}
SH9Color ProjectCubemapToSH9Color(ID3D11DeviceContext* context, ID3D11ShaderResourceView* cubeMap)
{
ID3D11Texture2DPtr srcTexture;
cubeMap->GetResource(reinterpret_cast<ID3D11Resource**>(&srcTexture));
D3D11_TEXTURE2D_DESC srcDesc;
srcTexture->GetDesc(&srcDesc);
ID3D11DevicePtr device;
context->GetDevice(&device);
ID3D11Texture2DPtr tempTexture;
D3D11_TEXTURE2D_DESC tempDesc = srcDesc;
tempDesc.Format = DXGI_FORMAT_R32G32B32A32_FLOAT;
tempDesc.MipLevels = 1;
tempDesc.BindFlags = D3D11_BIND_UNORDERED_ACCESS;
tempDesc.Usage = D3D11_USAGE_DEFAULT;
DXCall(device->CreateTexture2D(&tempDesc, NULL, &tempTexture));
ID3D11UnorderedAccessViewPtr tempUAV;
DXCall(device->CreateUnorderedAccessView(tempTexture, NULL, &tempUAV));
ID3D11ShaderResourceViewPtr tempSRV;
D3D11_SHADER_RESOURCE_VIEW_DESC srvDesc;
srvDesc.Format = srcDesc.Format;
srvDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2DARRAY;
srvDesc.Texture2DArray.MostDetailedMip = 0;
srvDesc.Texture2DArray.MipLevels = srcDesc.MipLevels;
srvDesc.Texture2DArray.FirstArraySlice = 0;
srvDesc.Texture2DArray.ArraySize = 6;
DXCall(device->CreateShaderResourceView(srcTexture, &srvDesc, &tempSRV));
static const UINT32 TGSize = 1024;
static ID3D11ComputeShaderPtr decodeShader;
if(decodeShader.GetInterfacePtr() == NULL)
{
CompileOptions opts;
opts.Add("TGSize_", TGSize);
decodeShader.Attach(CompileCSFromFile(device, L"SampleFramework11\\Shaders\\DecodeTextureCS.hlsl",
"DecodeTextureCS", "cs_5_0", opts.Defines()));
}
ID3D11ShaderResourceView* srvs[1] = { tempSRV };
context->CSSetShaderResources(0, 1, srvs);
ID3D11UnorderedAccessView* uavs[1] = { tempUAV };
context->CSSetUnorderedAccessViews(0, 1, uavs, NULL);
context->CSSetShader(decodeShader, NULL, 0);
context->Dispatch(DispatchSize(TGSize, srcDesc.Width), srcDesc.Height, 6);
float red[9];
float green[9];
float blue[9];
DXCall(D3DX11SHProjectCubeMap(context, 3, tempTexture, red, green, blue));
SH9Color sh;
for(UINT_PTR i = 0; i < 9; ++i)
sh.c[i] = XMVectorSet(red[i], green[i], blue[i], 0.0f);
return sh;
}