下降的答案是有幫助的。我發現我之所以無法讀取緩衝區是因爲我之前沒有將CPU_ACCESS_FLAG設置爲D3D11_CPU_ACCESS_READ。這裏
D3D11_BUFFER_DESC bufferDesc;
ZeroMemory(&bufferDesc, sizeof(bufferDesc));
bufferDesc.ByteWidth = iNumElements * sizeof(T);
bufferDesc.Usage = D3D11_USAGE_DEFAULT;
bufferDesc.CPUAccessFlags = D3D11_CPU_ACCESS_READ | D3D11_CPU_ACCESS_WRITE;
bufferDesc.BindFlags = D3D11_BIND_UNORDERED_ACCESS | D3D11_BIND_SHADER_RESOURCE ;
bufferDesc.MiscFlags = D3D11_RESOURCE_MISC_BUFFER_STRUCTURED;
bufferDesc.StructureByteStride = sizeof(T);
然後讀取數據我沒有
const ID3D11Device& device = *DXUTGetD3D11Device();
ID3D11DeviceContext& deviceContext = *DXUTGetD3D11DeviceContext();
D3D11_MAPPED_SUBRESOURCE ms;
HRESULT hr = deviceContext.Map(g_pParticles, 0, D3D11_MAP_READ, 0, &ms);
Particle* p = (Particle*)malloc(sizeof(Particle*) * g_iNumParticles);
ZeroMemory(p, sizeof(Particle*) * g_iNumParticles);
memccpy(p, ms.pData, 0, sizeof(ms.pData));
deviceContext.Unmap(g_pParticles, 0);
delete[] p;
我認爲這是一隻業績下滑,我想這樣做,只是爲了能夠調試值!
還是要謝謝你! =)
感謝您的解釋! –