Microsoft::WRL::ComPtr<ID3D12Resource> Renderer::UploadIndexData(void *data, long dataSize)
{
WaitForGpu();
// 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(_commandAllocators[_frameIndex]->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(_commandList->Reset(_commandAllocators[_frameIndex].Get(), NULL));
Microsoft::WRL::ComPtr<ID3D12Resource> indexBuffer;
Microsoft::WRL::ComPtr<ID3D12Resource> indexBufferUpload;
ThrowIfFailed(_device->CreateCommittedResource(
&CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_DEFAULT),
D3D12_HEAP_FLAG_NONE,
&CD3DX12_RESOURCE_DESC::Buffer(dataSize),
D3D12_RESOURCE_STATE_COPY_DEST,
nullptr,
IID_PPV_ARGS(&indexBuffer)));
ThrowIfFailed(_device->CreateCommittedResource(
&CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_UPLOAD),
D3D12_HEAP_FLAG_NONE,
&CD3DX12_RESOURCE_DESC::Buffer(dataSize),
D3D12_RESOURCE_STATE_GENERIC_READ,
nullptr,
IID_PPV_ARGS(&indexBufferUpload)));
// Copy data to the intermediate upload heap and then schedule a copy
// from the upload heap to the vertex buffer.
UINT8* pIndexDataBegin;
ThrowIfFailed(indexBufferUpload->Map(0, &CD3DX12_RANGE(0, dataSize), reinterpret_cast<void**>(&pIndexDataBegin)));
memcpy(pIndexDataBegin, data, dataSize);
indexBufferUpload->Unmap(0, nullptr);
_commandList->CopyBufferRegion(indexBuffer.Get(), 0, indexBufferUpload.Get(), 0, dataSize);
_commandList->ResourceBarrier(1, &CD3DX12_RESOURCE_BARRIER::Transition(indexBuffer.Get(), D3D12_RESOURCE_STATE_COPY_DEST, D3D12_RESOURCE_STATE_INDEX_BUFFER));
// Close the command list and execute it to begin the vertex buffer copy into
// the default heap.
ThrowIfFailed(_commandList->Close());
ID3D12CommandList* ppCommandLists[] = { _commandList.Get() };
_commandQueue->ExecuteCommandLists(_countof(ppCommandLists), ppCommandLists);
WaitForGpu();
return indexBuffer;
}
void glBufferSubData(GLenum target, GLintptr offset, GLsizeiptr size, const GLvoid* data)
{
if( g_pD3DDevice == 0 )
{
LOGInfo( LOGTag, "Trying to buffer data before d3d is initialized!\n" );
return;
}
int buffer = -1;
if( target == GL_ARRAY_BUFFER )
buffer = g_ActiveBufferObject_Array;
else if( target == GL_ELEMENT_ARRAY_BUFFER )
buffer = g_ActiveBufferObject_ElementArray;
if( buffer == -1 )
{
LOGInfo( LOGTag, "glBufferSubData() buffer not found!\n" );
return;
}
assert( g_D3DBufferObjects[buffer].m_InUse == true );
if( g_D3DBufferObjects[buffer].m_Buffer == 0 )
{
LOGInfo( LOGTag, "glBufferSubData() buffer not allocated!\n" );
return;
}
// set the buffer data:
if( data != 0 )
{
D3D11_MAPPED_SUBRESOURCE mappedResource;
// Lock the vertex buffer so it can be written to.
HRESULT result = g_pD3DContext->Map( g_D3DBufferObjects[buffer].m_Buffer.Get(), 0,
D3D11_MAP_WRITE_DISCARD, 0, &mappedResource );
if( FAILED(result) )
return;
// Get a pointer to the data in the vertex buffer.
void* verticesPtr = (void*)((int*)mappedResource.pData + offset);
// Copy the data into the vertex buffer.
memcpy( verticesPtr, (void*)data, size );
// Unlock the vertex buffer.
g_pD3DContext->Unmap( g_D3DBufferObjects[buffer].m_Buffer.Get(), 0 );
}
}
void glBufferData(GLenum target, GLsizeiptr size, const GLvoid* data, GLenum usage)
{
if( g_pD3DDevice == 0 )
{
LOGInfo( LOGTag, "Trying to initialize a buffer before d3d is initialized!\n" );
return;
}
int buffer = -1;
if( target == GL_ARRAY_BUFFER )
buffer = g_ActiveBufferObject_Array;
else if( target == GL_ELEMENT_ARRAY_BUFFER )
buffer = g_ActiveBufferObject_ElementArray;
if( buffer == -1 )
return;
assert( g_D3DBufferObjects[buffer].m_InUse == true );
if( g_D3DBufferObjects[buffer].m_Buffer == 0 )
{
D3D11_BUFFER_DESC BufferDesc;
// TODO: handle usage
BufferDesc.Usage = D3D11_USAGE_DYNAMIC;
BufferDesc.ByteWidth = size;
if( target == GL_ARRAY_BUFFER )
BufferDesc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
else if( target == GL_ELEMENT_ARRAY_BUFFER )
BufferDesc.BindFlags = D3D11_BIND_INDEX_BUFFER;
BufferDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
BufferDesc.MiscFlags = 0;
BufferDesc.StructureByteStride = 0;
// Now create the vertex buffer.
HRESULT result = g_pD3DDevice->CreateBuffer( &BufferDesc, 0, &g_D3DBufferObjects[buffer].m_Buffer );
if( FAILED(result) )
return;
}
// set the buffer data:
if( data != 0 )
{
D3D11_MAPPED_SUBRESOURCE mappedResource;
// Lock the vertex buffer so it can be written to.
HRESULT result = g_pD3DContext->Map( g_D3DBufferObjects[buffer].m_Buffer.Get(), 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource );
if( FAILED(result) )
return;
// Get a pointer to the data in the vertex buffer.
void* verticesPtr = (void*)mappedResource.pData;
// Copy the data into the vertex buffer.
memcpy( verticesPtr, (void*)data, size );
// Unlock the vertex buffer.
g_pD3DContext->Unmap( g_D3DBufferObjects[buffer].m_Buffer.Get(), 0 );
}
}
