/// <inheritdoc cref="Draw(GraphicsPrimitive)" />
public void Draw(D3D12GraphicsPrimitive graphicsPrimitive)
{
ThrowIfNull(graphicsPrimitive, nameof(graphicsPrimitive));
var graphicsCommandList = D3D12GraphicsCommandList;
var graphicsPipeline = graphicsPrimitive.D3D12GraphicsPipeline;
var vertexBuffer = graphicsPrimitive.D3D12VertexBuffer;
graphicsCommandList->SetGraphicsRootSignature(graphicsPipeline.D3D12Signature.D3D12RootSignature);
graphicsCommandList->SetPipelineState(graphicsPipeline.D3D12PipelineState);
var vertexBufferView = new D3D12_VERTEX_BUFFER_VIEW {
BufferLocation = vertexBuffer.D3D12Resource->GetGPUVirtualAddress(),
StrideInBytes = (uint)vertexBuffer.Stride,
SizeInBytes = (uint)vertexBuffer.Size,
};
graphicsCommandList->IASetVertexBuffers(StartSlot: 0, NumViews: 1, &vertexBufferView);
var constantBuffers = graphicsPrimitive.ConstantBuffers;
var constantBuffersLength = constantBuffers.Length;
for (var index = 0; index < constantBuffersLength; index++)
{
var constantBuffer = (D3D12GraphicsBuffer)constantBuffers[index];
graphicsCommandList->SetGraphicsRootConstantBufferView(unchecked ((uint)index), constantBuffer.D3D12Resource->GetGPUVirtualAddress());
}
var indexBuffer = graphicsPrimitive.D3D12IndexBuffer;
if (indexBuffer != null)
{
var indexBufferStride = indexBuffer.Stride;
var indexFormat = DXGI_FORMAT_R16_UINT;
if (indexBufferStride != 2)
{
Assert(indexBufferStride == 4, "Index Buffer has an unsupported stride.");
indexFormat = DXGI_FORMAT_R32_UINT;
}
var indexBufferView = new D3D12_INDEX_BUFFER_VIEW {
BufferLocation = indexBuffer.D3D12Resource->GetGPUVirtualAddress(),
SizeInBytes = (uint)indexBuffer.Size,
Format = indexFormat,
};
graphicsCommandList->IASetIndexBuffer(&indexBufferView);
graphicsCommandList->DrawIndexedInstanced(IndexCountPerInstance: (uint)(indexBuffer.Size / indexBufferStride), InstanceCount: 1, StartIndexLocation: 0, BaseVertexLocation: 0, StartInstanceLocation: 0);
}
else
{
graphicsCommandList->DrawInstanced(VertexCountPerInstance: (uint)(vertexBuffer.Size / vertexBuffer.Stride), InstanceCount: 1, StartVertexLocation: 0, StartInstanceLocation: 0);
}
}
/// <summary>Binds an index buffer view to the context.</summary>
/// <param name="indexBufferView">The index buffer view to set.</param>
/// <exception cref="ArgumentNullException"><paramref name="indexBufferView" /> is <c>null</c>.</exception>
public void BindIndexBufferView(GraphicsBufferView indexBufferView)
{
ThrowIfNull(indexBufferView);
var d3d12IndexBufferView = new D3D12_INDEX_BUFFER_VIEW {
BufferLocation = indexBufferView.D3D12GpuVirtualAddress,
SizeInBytes = checked ((uint)indexBufferView.ByteLength),
Format = indexBufferView.BytesPerElement == 2 ? DXGI_FORMAT_R16_UINT : DXGI_FORMAT_R32_UINT,
};
D3D12GraphicsCommandList->IASetIndexBuffer(&d3d12IndexBufferView);
}
public virtual void IASetIndexBuffer(
ref D3D12_INDEX_BUFFER_VIEW pView
)
{
var fp = GetFunctionPointer(43);
if (m_IASetIndexBufferFunc == null)
{
m_IASetIndexBufferFunc = (IASetIndexBufferFunc)Marshal.GetDelegateForFunctionPointer(fp, typeof(IASetIndexBufferFunc));
}
m_IASetIndexBufferFunc(m_ptr, ref pView);
}
public unsafe bool Render()
{
if (!_loadingComplete)
{
return(false);
}
ThrowIfFailed(_deviceResources.CommandAllocator->Reset());
ThrowIfFailed(_commandList.Ptr->Reset(_deviceResources.CommandAllocator, _pipelineState.Ptr));
{
_commandList.Ptr->SetGraphicsRootSignature(_rootSignature.Ptr);
const uint ppHeapsCount = 1;
ID3D12DescriptorHeap **ppHeaps = stackalloc ID3D12DescriptorHeap *[(int)ppHeapsCount] {
_cbvHeap.Ptr
};
_commandList.Ptr->SetDescriptorHeaps(ppHeapsCount, ppHeaps);
D3D12_GPU_DESCRIPTOR_HANDLE gpuHandle;
_cbvHeap.Ptr->GetGPUDescriptorHandleForHeapStart(&gpuHandle);
gpuHandle.ptr += _deviceResources.CurrentFrameIndex * _cbvDescriptorSize;
_commandList.Ptr->SetGraphicsRootDescriptorTable(0, gpuHandle);
D3D12_VIEWPORT viewport = _deviceResources.ScreenViewport;
_commandList.Ptr->RSSetViewports(1, &viewport);
D3D12_RECT rect = _scissorRect;
_commandList.Ptr->RSSetScissorRects(1, &rect);
D3D12_RESOURCE_BARRIER renderTargetResourceBarrier =
CD3DX12_RESOURCE_BARRIER.Transition(
_deviceResources.RenderTarget,
D3D12_RESOURCE_STATE_PRESENT,
D3D12_RESOURCE_STATE_RENDER_TARGET
);
_commandList.Ptr->ResourceBarrier(1, &renderTargetResourceBarrier);
D3D12_CPU_DESCRIPTOR_HANDLE renderTargetView = _deviceResources.RenderTargetView;
D3D12_CPU_DESCRIPTOR_HANDLE depthStencilView = _deviceResources.DepthStencilView;
_commandList.Ptr->ClearRenderTargetView(renderTargetView, CornflowerBlue, 0, null);
_commandList.Ptr->ClearDepthStencilView(depthStencilView, D3D12_CLEAR_FLAG_DEPTH,
1, 0, 0, null);
_commandList.Ptr->OMSetRenderTargets(1, &renderTargetView, FALSE, &depthStencilView);
_commandList.Ptr->IASetPrimitiveTopology(D3D10_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
D3D12_VERTEX_BUFFER_VIEW vertexBufferView = _vertexBufferView;
D3D12_INDEX_BUFFER_VIEW indexBufferView = _indexBufferView;
_commandList.Ptr->IASetVertexBuffers(0, 1, &vertexBufferView);
_commandList.Ptr->IASetIndexBuffer(&indexBufferView);
_commandList.Ptr->DrawIndexedInstanced(36, 1, 0, 0, 0);
D3D12_RESOURCE_BARRIER presentResourceBarrier =
CD3DX12_RESOURCE_BARRIER.Transition(
_deviceResources.RenderTarget,
D3D12_RESOURCE_STATE_RENDER_TARGET,
D3D12_RESOURCE_STATE_PRESENT);
_commandList.Ptr->ResourceBarrier(1, &presentResourceBarrier);
}
ThrowIfFailed(_commandList.Ptr->Close());
const uint ppCommandListsCount = 1;
ID3D12CommandList **ppCommandLists = stackalloc ID3D12CommandList *[(int)ppCommandListsCount]
{
(ID3D12CommandList *)_commandList.Ptr
};
_deviceResources.CommandQueue->ExecuteCommandLists(ppCommandListsCount, ppCommandLists);
return(true);
}
