Examples: Win32+DX9,DX10,DX11,DX12: rework main loop to handle minimization and screen locking. (#2496, #3907, #6308, #7615)
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@ -66,6 +66,8 @@ Other changes:
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- Nav: fixed holding Ctrl or gamepad L1 from not slowing down keyboard/gamepad tweak speed.
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Broken during a refactor refactor for 1.89. Holding Shift/R1 to speed up wasn't broken.
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- Tables: fixed cell background of fully clipped row overlapping with header. (#7575, #7041) [@prabuinet]
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- Examples: Win32+DX9,DX10,DX11,DX12: rework main loop to handle minimization and screen
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locking without burning resources by running unthrottled code. (#2496, #3907, #6308, #7615)
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- Backends: all backends + demo now call IMGUI_CHECKVERSION() to verify ABI compatibility between caller
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code and compiled version of Dear ImGui. If you get an assert it most likely mean you have a build issue,
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read comments near the assert. (#7568)
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@ -16,6 +16,7 @@
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// Data
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static ID3D10Device* g_pd3dDevice = nullptr;
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static IDXGISwapChain* g_pSwapChain = nullptr;
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static bool g_SwapChainOccluded = false;
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static UINT g_ResizeWidth = 0, g_ResizeHeight = 0;
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static ID3D10RenderTargetView* g_mainRenderTargetView = nullptr;
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@ -100,6 +101,14 @@ int main(int, char**)
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if (done)
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break;
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// Handle window being minimized or screen locked
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if (g_SwapChainOccluded && g_pSwapChain->Present(0, DXGI_PRESENT_TEST) == DXGI_STATUS_OCCLUDED)
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{
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::Sleep(10);
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continue;
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}
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g_SwapChainOccluded = false;
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// Handle window resize (we don't resize directly in the WM_SIZE handler)
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if (g_ResizeWidth != 0 && g_ResizeHeight != 0)
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{
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@ -158,10 +167,13 @@ int main(int, char**)
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g_pd3dDevice->ClearRenderTargetView(g_mainRenderTargetView, clear_color_with_alpha);
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ImGui_ImplDX10_RenderDrawData(ImGui::GetDrawData());
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g_pSwapChain->Present(1, 0); // Present with vsync
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//g_pSwapChain->Present(0, 0); // Present without vsync
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// Present
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HRESULT hr = g_pSwapChain->Present(1, 0); // Present with vsync
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//HRESULT hr = g_pSwapChain->Present(0, 0); // Present without vsync
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g_SwapChainOccluded = (hr == DXGI_STATUS_OCCLUDED);
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}
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// Cleanup
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ImGui_ImplDX10_Shutdown();
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ImGui_ImplWin32_Shutdown();
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ImGui::DestroyContext();
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@ -16,6 +16,7 @@
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static ID3D11Device* g_pd3dDevice = nullptr;
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static ID3D11DeviceContext* g_pd3dDeviceContext = nullptr;
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static IDXGISwapChain* g_pSwapChain = nullptr;
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static bool g_SwapChainOccluded = false;
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static UINT g_ResizeWidth = 0, g_ResizeHeight = 0;
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static ID3D11RenderTargetView* g_mainRenderTargetView = nullptr;
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@ -100,6 +101,14 @@ int main(int, char**)
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if (done)
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break;
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// Handle window being minimized or screen locked
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if (g_SwapChainOccluded && g_pSwapChain->Present(0, DXGI_PRESENT_TEST) == DXGI_STATUS_OCCLUDED)
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{
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::Sleep(10);
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continue;
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}
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g_SwapChainOccluded = false;
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// Handle window resize (we don't resize directly in the WM_SIZE handler)
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if (g_ResizeWidth != 0 && g_ResizeHeight != 0)
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{
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@ -158,8 +167,10 @@ int main(int, char**)
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g_pd3dDeviceContext->ClearRenderTargetView(g_mainRenderTargetView, clear_color_with_alpha);
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ImGui_ImplDX11_RenderDrawData(ImGui::GetDrawData());
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g_pSwapChain->Present(1, 0); // Present with vsync
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//g_pSwapChain->Present(0, 0); // Present without vsync
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// Present
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HRESULT hr = g_pSwapChain->Present(1, 0); // Present with vsync
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//HRESULT hr = g_pSwapChain->Present(0, 0); // Present without vsync
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g_SwapChainOccluded = (hr == DXGI_STATUS_OCCLUDED);
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}
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// Cleanup
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@ -26,6 +26,8 @@
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#pragma comment(lib, "dxguid.lib")
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#endif
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#include "imgui_internal.h"
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struct FrameContext
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{
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ID3D12CommandAllocator* CommandAllocator;
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@ -47,6 +49,7 @@ static ID3D12Fence* g_fence = nullptr;
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static HANDLE g_fenceEvent = nullptr;
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static UINT64 g_fenceLastSignaledValue = 0;
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static IDXGISwapChain3* g_pSwapChain = nullptr;
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static bool g_SwapChainOccluded = false;
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static HANDLE g_hSwapChainWaitableObject = nullptr;
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static ID3D12Resource* g_mainRenderTargetResource[NUM_BACK_BUFFERS] = {};
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static D3D12_CPU_DESCRIPTOR_HANDLE g_mainRenderTargetDescriptor[NUM_BACK_BUFFERS] = {};
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@ -137,6 +140,14 @@ int main(int, char**)
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if (done)
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break;
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// Handle window screen locked
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if (g_SwapChainOccluded && g_pSwapChain->Present(0, DXGI_PRESENT_TEST) == DXGI_STATUS_OCCLUDED)
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{
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::Sleep(10);
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continue;
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}
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g_SwapChainOccluded = false;
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// Start the Dear ImGui frame
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ImGui_ImplDX12_NewFrame();
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ImGui_ImplWin32_NewFrame();
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@ -209,8 +220,10 @@ int main(int, char**)
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g_pd3dCommandQueue->ExecuteCommandLists(1, (ID3D12CommandList* const*)&g_pd3dCommandList);
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g_pSwapChain->Present(1, 0); // Present with vsync
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//g_pSwapChain->Present(0, 0); // Present without vsync
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// Present
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HRESULT hr = g_pSwapChain->Present(1, 0); // Present with vsync
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//HRESULT hr = g_pSwapChain->Present(0, 0); // Present without vsync
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g_SwapChainOccluded = (hr == DXGI_STATUS_OCCLUDED);
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UINT64 fenceValue = g_fenceLastSignaledValue + 1;
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g_pd3dCommandQueue->Signal(g_fence, fenceValue);
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@ -15,6 +15,7 @@
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// Data
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static LPDIRECT3D9 g_pD3D = nullptr;
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static LPDIRECT3DDEVICE9 g_pd3dDevice = nullptr;
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static bool g_DeviceLost = false;
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static UINT g_ResizeWidth = 0, g_ResizeHeight = 0;
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static D3DPRESENT_PARAMETERS g_d3dpp = {};
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@ -98,6 +99,20 @@ int main(int, char**)
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if (done)
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break;
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// Handle lost D3D9 device
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if (g_DeviceLost)
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{
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HRESULT hr = g_pd3dDevice->TestCooperativeLevel();
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if (hr == D3DERR_DEVICELOST)
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{
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::Sleep(10);
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continue;
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}
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if (hr == D3DERR_DEVICENOTRESET)
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ResetDevice();
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g_DeviceLost = false;
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}
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// Handle window resize (we don't resize directly in the WM_SIZE handler)
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if (g_ResizeWidth != 0 && g_ResizeHeight != 0)
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{
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@ -163,12 +178,11 @@ int main(int, char**)
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g_pd3dDevice->EndScene();
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}
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HRESULT result = g_pd3dDevice->Present(nullptr, nullptr, nullptr, nullptr);
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// Handle loss of D3D9 device
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if (result == D3DERR_DEVICELOST && g_pd3dDevice->TestCooperativeLevel() == D3DERR_DEVICENOTRESET)
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ResetDevice();
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if (result == D3DERR_DEVICELOST)
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g_DeviceLost = true;
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}
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// Cleanup
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ImGui_ImplDX9_Shutdown();
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ImGui_ImplWin32_Shutdown();
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ImGui::DestroyContext();
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