public void CreateWindowSizeDependentResources()
{
Size outputSize = _deviceResources.OutputSize;
var aspectRatio = (float)outputSize.Width / (float)outputSize.Height;
var fovAngleY = 70.0F * (float)Math.PI / 180.0F;
D3D12_VIEWPORT viewport = _deviceResources.ScreenViewport;
_scissorRect = new D3D12_RECT
{
left = 0,
top = 0,
right = (int)viewport.Width,
bottom = (int)viewport.Height
};
if (aspectRatio < 1)
{
fovAngleY *= 2;
}
Matrix4x4 perspectiveMatrix = Matrix4x4.CreatePerspectiveFieldOfView(
fovAngleY,
aspectRatio,
0.01F,
100.0F
);
Matrix4x4 orientation = _deviceResources.OrientationTransform3D;
_constantBufferData.projection = Matrix4x4.Transpose(perspectiveMatrix * orientation);
_constantBufferData.view = Matrix4x4.Transpose(Matrix4x4.CreateLookAt(Eye, At, Up));
}
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);
}
