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Examples: Win32+DX9,DX10,DX11,DX12: rework main loop to handle minimization and screen locking. (#2496, #3907, #6308, #7615)

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ocornut
2024-05-23 15:15:42 +02:00
parent 6d1a6f1c74
commit ec1d2be96f
5 changed files with 62 additions and 10 deletions
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17
examples/example_win32_directx12/main.cpp
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@@ -26,6 +26,8 @@
#pragma comment(lib, "dxguid.lib")
#endif
#include "imgui_internal.h"
struct FrameContext
{
ID3D12CommandAllocator* CommandAllocator;
@@ -47,6 +49,7 @@ static ID3D12Fence* g_fence = nullptr;
static HANDLE g_fenceEvent = nullptr;
static UINT64 g_fenceLastSignaledValue = 0;
static IDXGISwapChain3* g_pSwapChain = nullptr;
static bool g_SwapChainOccluded = false;
static HANDLE g_hSwapChainWaitableObject = nullptr;
static ID3D12Resource* g_mainRenderTargetResource[NUM_BACK_BUFFERS] = {};
static D3D12_CPU_DESCRIPTOR_HANDLE g_mainRenderTargetDescriptor[NUM_BACK_BUFFERS] = {};
@@ -137,6 +140,14 @@ int main(int, char**)
if (done)
break;
// Handle window screen locked
if (g_SwapChainOccluded && g_pSwapChain->Present(0, DXGI_PRESENT_TEST) == DXGI_STATUS_OCCLUDED)
{
::Sleep(10);
continue;
}
g_SwapChainOccluded = false;
// Start the Dear ImGui frame
ImGui_ImplDX12_NewFrame();
ImGui_ImplWin32_NewFrame();
@@ -209,8 +220,10 @@ int main(int, char**)
g_pd3dCommandQueue->ExecuteCommandLists(1, (ID3D12CommandList* const*)&g_pd3dCommandList);
g_pSwapChain->Present(1, 0); // Present with vsync
//g_pSwapChain->Present(0, 0); // Present without vsync
// Present
HRESULT hr = g_pSwapChain->Present(1, 0); // Present with vsync
//HRESULT hr = g_pSwapChain->Present(0, 0); // Present without vsync
g_SwapChainOccluded = (hr == DXGI_STATUS_OCCLUDED);
UINT64 fenceValue = g_fenceLastSignaledValue + 1;
g_pd3dCommandQueue->Signal(g_fence, fenceValue);