#DIRECTX 11 UPDATE UPDATE#

What I am doing now is deleting the old buffer and creating a new one. In my case UpdateSubresource() seems the wrong approach. Should I use map/unmap even if I'm not updating every frame? How do I cope with that? Could not find anything on the web or in the Microsoft help. The second set will be filled into the buffer but only shows 650000 vertices. That code works (most of the time) but the problem is that the size of the buffer does not expand automatically.įor example first I have a data set with 650000 vertices and then I have one with 700000 vertices. My code looks like this right now: deviceContext->UpdateSubresource(mVertexBuffer, 0, NULL, vertices, 0, 0) Īnd for the index buffer deviceContext->UpdateSubresource(mIndexBuffer, 0, NULL, indices, 0, 0) That point gives rise to the actual question. The old vertices and indices are discarded while the new ones are supposed to be written to the buffers. So I wanna kinda swap the whole vertex and index buffer.

#DIRECTX 11 UPDATE UPDATE#

Then after 1 sec I wanna update the entire data set. I'm using similar calls to create an index buffer. HRESULT hr = device->CreateBuffer(&VertexBufferDesc, &InitialSubData, &mVertexBuffer) ZeroMemory(&InitialSubData, sizeof(InitialSubData)) VertexBufferDesc.BindFlags = D3D11_BIND_VERTEX_BUFFER //use as a vertex buffer VertexBufferDesc.ByteWidth = sizeof(VertexType) * numOfVertices VertexBufferDesc.Usage = D3D11_USAGE_DEFAULT My Dxdiag tells that I am running DirectX 11. ZeroMemory(&VertexBufferDesc, sizeof(VertexBufferDesc)) I searched AMD's and got a list of possible causes, one of which suggests trying to update DirectX. In my sientific simulation I have got huge data sets (around 600000 vertices) to update in regular time intervals (around 1sec).įor the first data set I create a buffer like follows: mVertexStride = sizeof(VertexType)

Directx 11 update