void D3D12Fullscreen::OnSizeChanged(UINT width, UINT height, bool minimized)
{
// Determine if the swap buffers and other resources need to be resized or not.
if ((width != m_width || height != m_height) && !minimized)
{
// Flush all current GPU commands.
WaitForGpu();
// Release the resources holding references to the swap chain (requirement of
// IDXGISwapChain::ResizeBuffers) and reset the frame fence values to the
// current fence value.
for (UINT n = 0; n < FrameCount; n++)
{
m_renderTargets[n].Reset();
m_fenceValues[n] = m_fenceValues[m_frameIndex];
}
// Resize the swap chain to the desired dimensions.
DXGI_SWAP_CHAIN_DESC desc = {};
m_swapChain->GetDesc(&desc);
ThrowIfFailed(m_swapChain->ResizeBuffers(FrameCount, width, height, desc.BufferDesc.Format, desc.Flags));
// Reset the frame index to the current back buffer index.
m_frameIndex = m_swapChain->GetCurrentBackBufferIndex();
// Update the width, height, and aspect ratio member variables.
UpdateForSizeChange(width, height);
LoadSizeDependentResources();
}
m_windowVisible = !minimized;
}
void D3D12HDR::OnSizeChanged(UINT width, UINT height, bool minimized)
{
// Update the width, height, and aspect ratio member variables.
UpdateForSizeChange(width, height);
// Update the size of swapchain buffers.
UpdateSwapChainBuffer(width, height, GetBackBufferFormat());
m_windowVisible = !minimized;
}
void D3D12HDR::UpdateSwapChainBuffer(UINT width, UINT height, DXGI_FORMAT format)
{
if (!m_swapChain)
{
return;
}
// Flush all current GPU commands.
WaitForGpu();
// Release the resources holding references to the swap chain (requirement of
// IDXGISwapChain::ResizeBuffers) and reset the frame fence values to the
// current fence value.
for (UINT n = 0; n < FrameCount; n++)
{
m_renderTargets[n].Reset();
m_fenceValues[n] = m_fenceValues[m_frameIndex];
}
if (m_enableUI)
{
m_uiLayer->ReleaseResources();
}
// Resize the swap chain to the desired dimensions.
DXGI_SWAP_CHAIN_DESC1 desc = {};
m_swapChain->GetDesc1(&desc);
ThrowIfFailed(m_swapChain->ResizeBuffers(FrameCount, width, height, format, desc.Flags));
EnsureSwapChainColorSpace(m_currentSwapChainBitDepth, m_enableST2084);
// Reset the frame index to the current back buffer index.
m_frameIndex = m_swapChain->GetCurrentBackBufferIndex();
// Update the width, height, and aspect ratio member variables.
UpdateForSizeChange(width, height);
LoadSizeDependentResources();
}
