Método ID3D12GraphicsCommandList::ClearDepthStencilView (d3d12.h)
Limpa o recurso de estêncil de profundidade.
Sintaxe
void ClearDepthStencilView(
[in] D3D12_CPU_DESCRIPTOR_HANDLE DepthStencilView,
[in] D3D12_CLEAR_FLAGS ClearFlags,
[in] FLOAT Depth,
[in] UINT8 Stencil,
[in] UINT NumRects,
[in] const D3D12_RECT *pRects
);
Parâmetros
[in] DepthStencilView
Tipo: D3D12_CPU_DESCRIPTOR_HANDLE
Descreve o identificador do descritor de CPU que representa o início do heap para que o estêncil de profundidade seja limpo.
[in] ClearFlags
Tipo: D3D12_CLEAR_FLAGS
Uma combinação de valores D3D12_CLEAR_FLAGS combinados usando uma operação OR bit a bit. O valor resultante identifica o tipo de dados a serem limpos (buffer de profundidade, buffer de estêncil ou ambos).
[in] Depth
Tipo: FLOAT
Um valor com o qual limpar o buffer de profundidade. Esse valor será fixado entre 0 e 1.
[in] Stencil
Tipo: UINT8
Um valor com o qual limpar o buffer de estêncil.
[in] NumRects
Tipo: UINT
O número de retângulos na matriz especificada pelo parâmetro pRects .
[in] pRects
Tipo: const D3D12_RECT*
Uma matriz de estruturas de D3D12_RECT para os retângulos na exibição de recurso a serem limpas. Se NULL, ClearDepthStencilView limpará toda a exibição de recurso.
Retornar valor
Nenhum
Comentários
Somente listas de comandos diretas e de pacote dão suporte a essa operação.
ClearDepthStencilView pode ser usado para inicializar recursos que alias a mesma memória de heap. Consulte CreatePlacedResource para obter mais detalhes.
Validação de runtime
Para entradas de ponto flutuante, o runtime definirá valores desnormalizados como 0 (preservando NANs).A falha de validação resultará na chamada para FecharE_INVALIDARG de retorno.
Camada de depuração
A camada de depuração emitirá erros se as cores de entrada forem desnormalizadas.A camada de depuração emitirá um erro se os sub-recursos referenciados pela exibição não estiverem no estado apropriado. Para ClearDepthStencilView, o estado deve estar no estado D3D12_RESOURCE_STATE_DEPTH_WRITE.
Exemplos
O exemplo D3D12Bundles usa ID3D12GraphicsCommandList::ClearDepthStencilView da seguinte maneira:
// Pipeline objects.
D3D12_VIEWPORT m_viewport;
ComPtr<IDXGISwapChain3> m_swapChain;
ComPtr<ID3D12Device> m_device;
ComPtr<ID3D12Resource> m_renderTargets[FrameCount];
ComPtr<ID3D12Resource> m_depthStencil;
ComPtr<ID3D12CommandAllocator> m_commandAllocator;
ComPtr<ID3D12GraphicsCommandList> m_commandList;
ComPtr<ID3D12CommandQueue> m_commandQueue;
ComPtr<ID3D12RootSignature >m_rootSignature;
ComPtr<ID3D12DescriptorHeap> m_rtvHeap;
ComPtr<ID3D12DescriptorHeap> m_cbvSrvHeap;
ComPtr<ID3D12DescriptorHeap> m_dsvHeap;
ComPtr<ID3D12DescriptorHeap> m_samplerHeap;
ComPtr<ID3D12PipelineState> m_pipelineState1;
ComPtr<ID3D12PipelineState> m_pipelineState2;
D3D12_RECT m_scissorRect;
void D3D12Bundles::PopulateCommandList(FrameResource* pFrameResource)
{
// Command list allocators can only be reset when the associated
// command lists have finished execution on the GPU; apps should use
// fences to determine GPU execution progress.
ThrowIfFailed(m_pCurrentFrameResource->m_commandAllocator->Reset());
// However, when ExecuteCommandList() is called on a particular command
// list, that command list can then be reset at any time and must be before
// re-recording.
ThrowIfFailed(m_commandList->Reset(m_pCurrentFrameResource->m_commandAllocator.Get(), m_pipelineState1.Get()));
// Set necessary state.
m_commandList->SetGraphicsRootSignature(m_rootSignature.Get());
ID3D12DescriptorHeap* ppHeaps[] = { m_cbvSrvHeap.Get(), m_samplerHeap.Get() };
m_commandList->SetDescriptorHeaps(_countof(ppHeaps), ppHeaps);
m_commandList->RSSetViewports(1, &m_viewport);
m_commandList->RSSetScissorRects(1, &m_scissorRect);
// Indicate that the back buffer will be used as a render target.
m_commandList->ResourceBarrier(1, &CD3DX12_RESOURCE_BARRIER::Transition(m_renderTargets[m_frameIndex].Get(), D3D12_RESOURCE_STATE_PRESENT, D3D12_RESOURCE_STATE_RENDER_TARGET));
CD3DX12_CPU_DESCRIPTOR_HANDLE rtvHandle(m_rtvHeap->GetCPUDescriptorHandleForHeapStart(), m_frameIndex, m_rtvDescriptorSize);
CD3DX12_CPU_DESCRIPTOR_HANDLE dsvHandle(m_dsvHeap->GetCPUDescriptorHandleForHeapStart());
m_commandList->OMSetRenderTargets(1, &rtvHandle, FALSE, &dsvHandle);
// Record commands.
const float clearColor[] = { 0.0f, 0.2f, 0.4f, 1.0f };
m_commandList->ClearRenderTargetView(rtvHandle, clearColor, 0, nullptr);
m_commandList->ClearDepthStencilView(m_dsvHeap->GetCPUDescriptorHandleForHeapStart(), D3D12_CLEAR_FLAG_DEPTH, 1.0f, 0, 0, nullptr);
if (UseBundles)
{
// Execute the prebuilt bundle.
m_commandList->ExecuteBundle(pFrameResource->m_bundle.Get());
}
else
{
// Populate a new command list.
pFrameResource->PopulateCommandList(m_commandList.Get(), m_pipelineState1.Get(), m_pipelineState2.Get(), m_currentFrameResourceIndex, m_numIndices, &m_indexBufferView,
&m_vertexBufferView, m_cbvSrvHeap.Get(), m_cbvSrvDescriptorSize, m_samplerHeap.Get(), m_rootSignature.Get());
}
// Indicate that the back buffer will now be used to present.
m_commandList->ResourceBarrier(1, &CD3DX12_RESOURCE_BARRIER::Transition(m_renderTargets[m_frameIndex].Get(), D3D12_RESOURCE_STATE_RENDER_TARGET, D3D12_RESOURCE_STATE_PRESENT));
ThrowIfFailed(m_commandList->Close());
}
O exemplo D3D12Multithreading usa ID3D12GraphicsCommandList::ClearDepthStencilView da seguinte maneira:
void FrameResource::Init()
{
// Reset the command allocators and lists for the main thread.
for (int i = 0; i < CommandListCount; i++)
{
ThrowIfFailed(m_commandAllocators[i]->Reset());
ThrowIfFailed(m_commandLists[i]->Reset(m_commandAllocators[i].Get(), m_pipelineState.Get()));
}
// Clear the depth stencil buffer in preparation for rendering the shadow map.
m_commandLists[CommandListPre]->ClearDepthStencilView(m_shadowDepthView, D3D12_CLEAR_FLAG_DEPTH, 1.0f, 0, 0, nullptr);
// Reset the worker command allocators and lists.
for (int i = 0; i < NumContexts; i++)
{
ThrowIfFailed(m_shadowCommandAllocators[i]->Reset());
ThrowIfFailed(m_shadowCommandLists[i]->Reset(m_shadowCommandAllocators[i].Get(), m_pipelineStateShadowMap.Get()));
ThrowIfFailed(m_sceneCommandAllocators[i]->Reset());
ThrowIfFailed(m_sceneCommandLists[i]->Reset(m_sceneCommandAllocators[i].Get(), m_pipelineState.Get()));
}
}
// Assemble the CommandListPre command list.
void D3D12Multithreading::BeginFrame()
{
m_pCurrentFrameResource->Init();
// Indicate that the back buffer will be used as a render target.
m_pCurrentFrameResource->m_commandLists[CommandListPre]->ResourceBarrier(1, &CD3DX12_RESOURCE_BARRIER::Transition(m_renderTargets[m_frameIndex].Get(), D3D12_RESOURCE_STATE_PRESENT, D3D12_RESOURCE_STATE_RENDER_TARGET));
// Clear the render target and depth stencil.
const float clearColor[] = { 0.0f, 0.0f, 0.0f, 1.0f };
CD3DX12_CPU_DESCRIPTOR_HANDLE rtvHandle(m_rtvHeap->GetCPUDescriptorHandleForHeapStart(), m_frameIndex, m_rtvDescriptorSize);
m_pCurrentFrameResource->m_commandLists[CommandListPre]->ClearRenderTargetView(rtvHandle, clearColor, 0, nullptr);
m_pCurrentFrameResource->m_commandLists[CommandListPre]->ClearDepthStencilView(m_dsvHeap->GetCPUDescriptorHandleForHeapStart(), D3D12_CLEAR_FLAG_DEPTH, 1.0f, 0, 0, nullptr);
ThrowIfFailed(m_pCurrentFrameResource->m_commandLists[CommandListPre]->Close());
}
// Assemble the CommandListMid command list.
void D3D12Multithreading::MidFrame()
{
// Transition our shadow map from the shadow pass to readable in the scene pass.
m_pCurrentFrameResource->SwapBarriers();
ThrowIfFailed(m_pCurrentFrameResource->m_commandLists[CommandListMid]->Close());
}
Consulte Código de exemplo na referência do Direct3D 12.
Requisitos
| Requisito | Valor |
|---|---|
| Plataforma de Destino | Windows |
| Cabeçalho | d3d12.h |
| Biblioteca | D3d12.lib |
| DLL | D3d12.dll |