internal void Resize()
{
// 等到以前的所有 GPU 工作完成。
device.WaitForGpu();
// 清除特定于先前窗口大小的内容。
for (int n = 0; n < c_frameCount; n++)
{
m_renderTargets[n]?.Dispose();
m_renderTargets[n] = null;
renderTargetResourceStates[n] = ResourceStates.Common;
}
if (m_swapChain != null)
{
// 如果交换链已存在，请调整其大小。
Result hr = m_swapChain.ResizeBuffers(c_frameCount, this.width, this.height, format, SwapChainFlags.AllowTearing);
ThrowIfFailed(hr);
}
else
{
// 否则，使用与现有 Direct3D 设备相同的适配器新建一个。
SwapChainDescription1 swapChainDescription1 = new SwapChainDescription1();
swapChainDescription1.Width = this.width; // 匹配窗口的大小。
swapChainDescription1.Height = this.height;
swapChainDescription1.Format = format;
swapChainDescription1.Stereo = false;
swapChainDescription1.SampleDescription.Count = 1; // 请不要使用多采样。
swapChainDescription1.SampleDescription.Quality = 0;
swapChainDescription1.BufferUsage = Usage.RenderTargetOutput;
swapChainDescription1.BufferCount = c_frameCount; // 使用三重缓冲最大程度地减小延迟。
swapChainDescription1.SwapEffect = SwapEffect.FlipSequential;
swapChainDescription1.Flags = SwapChainFlags.AllowTearing;
swapChainDescription1.Scaling = Scaling.Stretch;
swapChainDescription1.AlphaMode = AlphaMode.Ignore;
var swapChain = device.m_dxgiFactory.CreateSwapChainForHwnd(device.commandQueue, hwnd, swapChainDescription1);
m_swapChain?.Dispose();
m_swapChain = swapChain.QueryInterface <IDXGISwapChain3>();
swapChain.Dispose();
}
for (int n = 0; n < c_frameCount; n++)
{
ThrowIfFailed(m_swapChain.GetBuffer(n, out m_renderTargets[n]));
}
}
public void Dispose()
{
WaitForGpu();
while (delayDestroy.Count > 0)
{
var p = delayDestroy.Dequeue();
p.pipelineState?.Dispose();
p.resource?.Dispose();
}
foreach (var commandAllocator in commandAllocators)
{
commandAllocator.Dispose();
}
if (screenResources != null)
{
foreach (var screenResource in screenResources)
{
screenResource.Dispose();
}
}
dxgiFactory?.Dispose();
commandQueue?.Dispose();
cbvsrvuavHeap?.Dispose();
dsvHeap?.Dispose();
rtvHeap?.Dispose();
swapChain?.Dispose();
fence?.Dispose();
device?.Dispose();
adapter?.Dispose();
}