void ColorBuffer::CreateDerivedViews( ID3D12Device* Device, DXGI_FORMAT Format, uint32_t ArraySize, uint32_t NumMips /* = 1 */ )
{
ASSERT( ArraySize == 1 || NumMips == 1 );
m_NumMipMaps = NumMips - 1;
D3D12_RENDER_TARGET_VIEW_DESC RTVDesc = {};
D3D12_UNORDERED_ACCESS_VIEW_DESC UAVDesc = {};
D3D12_SHADER_RESOURCE_VIEW_DESC SRVDesc = {};
RTVDesc.Format = Format;
UAVDesc.Format = GetUAVFormat( Format );
SRVDesc.Format = Format;
SRVDesc.Shader4ComponentMapping = D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING;
if (ArraySize > 1)
{
RTVDesc.ViewDimension = D3D12_RTV_DIMENSION_TEXTURE2DARRAY;
RTVDesc.Texture2DArray.MipSlice = 0;
RTVDesc.Texture2DArray.FirstArraySlice = 0;
RTVDesc.Texture2DArray.ArraySize = (UINT)ArraySize;
UAVDesc.ViewDimension = D3D12_UAV_DIMENSION_TEXTURE2DARRAY;
UAVDesc.Texture2DArray.MipSlice = 0;
UAVDesc.Texture2DArray.FirstArraySlice = 0;
UAVDesc.Texture2DArray.ArraySize = (UINT)ArraySize;
SRVDesc.ViewDimension = D3D12_SRV_DIMENSION_TEXTURE2DARRAY;
SRVDesc.Texture2DArray.MipLevels = NumMips;
SRVDesc.Texture2DArray.MostDetailedMip = 0;
SRVDesc.Texture2DArray.FirstArraySlice = 0;
SRVDesc.Texture2DArray.ArraySize = (UINT)ArraySize;
}
else
{
RTVDesc.ViewDimension = D3D12_RTV_DIMENSION_TEXTURE2D;
RTVDesc.Texture2D.MipSlice = 0;
UAVDesc.ViewDimension = D3D12_UAV_DIMENSION_TEXTURE2D;
UAVDesc.Texture2D.MipSlice = 0;
SRVDesc.ViewDimension = D3D12_SRV_DIMENSION_TEXTURE2D;
SRVDesc.Texture2D.MipLevels = NumMips;
SRVDesc.Texture2D.MostDetailedMip = 0;
}
if (m_SRVHandle.ptr == ~0ull)
{
m_RTVHandle = Graphics::g_pRTVDescriptorHeap->Append().GetCPUHandle();
m_SRVHandle = Graphics::g_pCSUDescriptorHeap->Append().GetCPUHandle();
}
ID3D12Resource* Resource = m_pResource.Get();
Device->CreateRenderTargetView( Resource, &RTVDesc, m_RTVHandle );
Device->CreateShaderResourceView( Resource, &SRVDesc, m_SRVHandle );
for (uint32_t i = 0; i < NumMips; ++i)
{
if (m_UAVHandle[i].ptr == ~0ull)
m_UAVHandle[i] = Graphics::g_pCSUDescriptorHeap->Append().GetCPUHandle();
Device->CreateUnorderedAccessView( Resource, nullptr, &UAVDesc, m_UAVHandle[i] );
UAVDesc.Texture2D.MipSlice++;
}
}
void ColorBuffer::CreateDerivedViews(ID3D12Device* Device, DXGI_FORMAT Format, uint32_t ArraySize, uint32_t NumMips)
{
ASSERT(ArraySize == 1 || NumMips == 1, "We don't support auto-mips on texture arrays");
m_NumMipMaps = NumMips - 1;
D3D12_RENDER_TARGET_VIEW_DESC RTVDesc = {};
D3D12_UNORDERED_ACCESS_VIEW_DESC UAVDesc = {};
D3D12_SHADER_RESOURCE_VIEW_DESC SRVDesc = {};
RTVDesc.Format = Format;
UAVDesc.Format = GetUAVFormat(Format);
SRVDesc.Format = Format;
SRVDesc.Shader4ComponentMapping = D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING;
if (ArraySize > 1)
{
RTVDesc.ViewDimension = D3D12_RTV_DIMENSION_TEXTURE2DARRAY;
RTVDesc.Texture2DArray.MipSlice = 0;
RTVDesc.Texture2DArray.FirstArraySlice = 0;
RTVDesc.Texture2DArray.ArraySize = (UINT)ArraySize;
UAVDesc.ViewDimension = D3D12_UAV_DIMENSION_TEXTURE2DARRAY;
UAVDesc.Texture2DArray.MipSlice = 0;
UAVDesc.Texture2DArray.FirstArraySlice = 0;
UAVDesc.Texture2DArray.ArraySize = (UINT)ArraySize;
SRVDesc.ViewDimension = D3D12_SRV_DIMENSION_TEXTURE2DARRAY;
SRVDesc.Texture2DArray.MipLevels = NumMips;
SRVDesc.Texture2DArray.MostDetailedMip = 0;
SRVDesc.Texture2DArray.FirstArraySlice = 0;
SRVDesc.Texture2DArray.ArraySize = (UINT)ArraySize;
}
else
{
RTVDesc.ViewDimension = D3D12_RTV_DIMENSION_TEXTURE2D;
RTVDesc.Texture2D.MipSlice = 0;
UAVDesc.ViewDimension = D3D12_UAV_DIMENSION_TEXTURE2D;
UAVDesc.Texture2D.MipSlice = 0;
SRVDesc.ViewDimension = D3D12_SRV_DIMENSION_TEXTURE2D;
SRVDesc.Texture2D.MipLevels = NumMips;
SRVDesc.Texture2D.MostDetailedMip = 0;
}
if (m_SRVHandle.ptr == ~0ull)
{
m_RTVHandle = Graphics::AllocateDescriptor(D3D12_DESCRIPTOR_HEAP_TYPE_RTV);
m_SRVHandle = Graphics::AllocateDescriptor(D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
}
ID3D12Resource* Resource = m_pResource.Get();
// Create the render target view
Device->CreateRenderTargetView(Resource, &RTVDesc, m_RTVHandle);
// Create the shader resource view
Device->CreateShaderResourceView(Resource, &SRVDesc, m_SRVHandle);
// Create the UAVs for each mip level (RWTexture2D)
for (uint32_t i = 0; i < NumMips; ++i)
{
if (m_UAVHandle[i].ptr == ~0ull)
m_UAVHandle[i] = Graphics::AllocateDescriptor(D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
Device->CreateUnorderedAccessView(Resource, nullptr, &UAVDesc, m_UAVHandle[i]);
UAVDesc.Texture2D.MipSlice++;
}
}
