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Examples: Win32: Let the CPU and GPU chill when minimized #3907

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Examples: Win32: Let the CPU and GPU chill when minimized #3907

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c5a132c
Let the CPU and GPU chill
CovERUshKA Mar 13, 2021
0c29a9b
Merge branch 'master' into patch-1
CovERUshKA Mar 23, 2021
8dc6a15
Add it for directx10 win32 example
CovERUshKA Mar 24, 2021
c7e4ef0
Change the check whether the window is minimized
CovERUshKA Mar 26, 2021
ea3d801
Add for directx12 and directx9
CovERUshKA Mar 27, 2021
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9 changes: 9 additions & 0 deletions examples/example_win32_directx10/main.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@
static ID3D10Device* g_pd3dDevice = NULL;
static IDXGISwapChain* g_pSwapChain = NULL;
static ID3D10RenderTargetView* g_mainRenderTargetView = NULL;
static bool g_wndMinimized = false;

// Forward declarations of helper functions
bool CreateDeviceD3D(HWND hWnd);
Expand Down Expand Up @@ -97,6 +98,13 @@ int main(int, char**)
if (done)
break;

// Don't render if the window is minimized
if (g_wndMinimized)
{
Sleep(1); // Let the processor sleep a bit
continue;
}

// Start the Dear ImGui frame
ImGui_ImplDX10_NewFrame();
ImGui_ImplWin32_NewFrame();
Expand Down Expand Up @@ -229,6 +237,7 @@ LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
g_pSwapChain->ResizeBuffers(0, (UINT)LOWORD(lParam), (UINT)HIWORD(lParam), DXGI_FORMAT_UNKNOWN, 0);
CreateRenderTarget();
}
g_wndMinimized = (wParam == SIZE_MINIMIZED);
return 0;
case WM_SYSCOMMAND:
if ((wParam & 0xfff0) == SC_KEYMENU) // Disable ALT application menu
Expand Down
9 changes: 9 additions & 0 deletions examples/example_win32_directx11/main.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@ static ID3D11Device* g_pd3dDevice = NULL;
static ID3D11DeviceContext* g_pd3dDeviceContext = NULL;
static IDXGISwapChain* g_pSwapChain = NULL;
static ID3D11RenderTargetView* g_mainRenderTargetView = NULL;
static bool g_wndMinimized = false;

// Forward declarations of helper functions
bool CreateDeviceD3D(HWND hWnd);
Expand Down Expand Up @@ -97,6 +98,13 @@ int main(int, char**)
if (done)
break;

// Don't render if the window is minimized
if (g_wndMinimized)
{
Sleep(1); // Let the processor sleep a bit
continue;
}

// Start the Dear ImGui frame
ImGui_ImplDX11_NewFrame();
ImGui_ImplWin32_NewFrame();
Expand Down Expand Up @@ -233,6 +241,7 @@ LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
g_pSwapChain->ResizeBuffers(0, (UINT)LOWORD(lParam), (UINT)HIWORD(lParam), DXGI_FORMAT_UNKNOWN, 0);
CreateRenderTarget();
}
g_wndMinimized = (wParam == SIZE_MINIMIZED);
return 0;
case WM_SYSCOMMAND:
if ((wParam & 0xfff0) == SC_KEYMENU) // Disable ALT application menu
Expand Down
9 changes: 9 additions & 0 deletions examples/example_win32_directx12/main.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -46,6 +46,7 @@ static IDXGISwapChain3* g_pSwapChain = NULL;
static HANDLE g_hSwapChainWaitableObject = NULL;
static ID3D12Resource* g_mainRenderTargetResource[NUM_BACK_BUFFERS] = {};
static D3D12_CPU_DESCRIPTOR_HANDLE g_mainRenderTargetDescriptor[NUM_BACK_BUFFERS] = {};
static bool g_wndMinimized = false;

// Forward declarations of helper functions
bool CreateDeviceD3D(HWND hWnd);
Expand Down Expand Up @@ -136,6 +137,13 @@ int main(int, char**)
if (done)
break;

// Don't render if the window is minimized
if (g_wndMinimized)
{
Sleep(1); // Let the processor sleep a bit
continue;
}

// Start the Dear ImGui frame
ImGui_ImplDX12_NewFrame();
ImGui_ImplWin32_NewFrame();
Expand Down Expand Up @@ -478,6 +486,7 @@ LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
CreateRenderTarget();
ImGui_ImplDX12_CreateDeviceObjects();
}
g_wndMinimized = (wParam == SIZE_MINIMIZED);
return 0;
case WM_SYSCOMMAND:
if ((wParam & 0xfff0) == SC_KEYMENU) // Disable ALT application menu
Expand Down
9 changes: 9 additions & 0 deletions examples/example_win32_directx9/main.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@
static LPDIRECT3D9 g_pD3D = NULL;
static LPDIRECT3DDEVICE9 g_pd3dDevice = NULL;
static D3DPRESENT_PARAMETERS g_d3dpp = {};
static bool g_wndMinimized = false;

// Forward declarations of helper functions
bool CreateDeviceD3D(HWND hWnd);
Expand Down Expand Up @@ -95,6 +96,13 @@ int main(int, char**)
if (done)
break;

// Don't render if the window is minimized
if (g_wndMinimized)
{
Sleep(1); // Let the processor sleep a bit
continue;
}

// Start the Dear ImGui frame
ImGui_ImplDX9_NewFrame();
ImGui_ImplWin32_NewFrame();
Expand Down Expand Up @@ -223,6 +231,7 @@ LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
g_d3dpp.BackBufferHeight = HIWORD(lParam);
ResetDevice();
}
g_wndMinimized = (wParam == SIZE_MINIMIZED);
return 0;
case WM_SYSCOMMAND:
if ((wParam & 0xfff0) == SC_KEYMENU) // Disable ALT application menu
Expand Down