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Optimize CaptureTexture

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This commit is contained in:
Chuck Walbourn 2016-09-14 15:37:44 -07:00
parent 9290fcdf04
commit 1ee61fdcab
1 changed files with 41 additions and 20 deletions
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61
DirectXTex/DirectXTexD3D11.cpp
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@ -742,19 +742,27 @@ HRESULT DirectX::CaptureTexture(
D3D11_TEXTURE1D_DESC desc;
pTexture->GetDesc(&desc);
desc.BindFlags = 0;
desc.MiscFlags = 0;
desc.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
desc.Usage = D3D11_USAGE_STAGING;
ComPtr<ID3D11Texture1D> pStaging;
hr = pDevice->CreateTexture1D(&desc, 0, pStaging.GetAddressOf());
if (FAILED(hr))
break;
if ((desc.Usage == D3D11_USAGE_STAGING) && (desc.CPUAccessFlags & D3D11_CPU_ACCESS_READ))
{
// Handle case where the source is already a staging texture we can use directly
pStaging = pTexture;
}
else
{
desc.BindFlags = 0;
desc.MiscFlags = 0;
desc.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
desc.Usage = D3D11_USAGE_STAGING;
assert(pStaging);
hr = pDevice->CreateTexture1D(&desc, 0, pStaging.GetAddressOf());
if (FAILED(hr))
break;
pContext->CopyResource(pStaging.Get(), pSource);
assert(pStaging);
pContext->CopyResource(pStaging.Get(), pSource);
}
TexMetadata mdata;
mdata.width = desc.Width;
@ -840,6 +848,11 @@ HRESULT DirectX::CaptureTexture(
pContext->CopyResource(pStaging.Get(), pTemp.Get());
}
else if ((desc.Usage == D3D11_USAGE_STAGING) && (desc.CPUAccessFlags & D3D11_CPU_ACCESS_READ))
{
// Handle case where the source is already a staging texture we can use directly
pStaging = pTexture;
}
else
{
desc.BindFlags = 0;
@ -887,19 +900,27 @@ HRESULT DirectX::CaptureTexture(
D3D11_TEXTURE3D_DESC desc;
pTexture->GetDesc(&desc);
desc.BindFlags = 0;
desc.MiscFlags = 0;
desc.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
desc.Usage = D3D11_USAGE_STAGING;
ComPtr<ID3D11Texture3D> pStaging;
hr = pDevice->CreateTexture3D(&desc, 0, pStaging.GetAddressOf());
if (FAILED(hr))
break;
if ((desc.Usage == D3D11_USAGE_STAGING) && (desc.CPUAccessFlags & D3D11_CPU_ACCESS_READ))
{
// Handle case where the source is already a staging texture we can use directly
pStaging = pTexture;
}
else
{
desc.BindFlags = 0;
desc.MiscFlags = 0;
desc.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
desc.Usage = D3D11_USAGE_STAGING;
assert(pStaging);
hr = pDevice->CreateTexture3D(&desc, 0, pStaging.GetAddressOf());
if (FAILED(hr))
break;
pContext->CopyResource(pStaging.Get(), pSource);
assert(pStaging);
pContext->CopyResource(pStaging.Get(), pSource);
}
TexMetadata mdata;
mdata.width = desc.Width;