Examples: DirectX10, DirectX11, DirectX12: comments about fullscreen mode and swapchain setup. (#8979)

examples/example_sdl2_directx11/main.cpp

@@ -210,6 +210,7 @@ int main(int, char**)
 bool CreateDeviceD3D(HWND hWnd)
 {
     // Setup swap chain
+    // This is a basic setup. Optimally could use e.g. DXGI_SWAP_EFFECT_FLIP_DISCARD and handle fullscreen mode differently. See #8979 for suggestions.
     DXGI_SWAP_CHAIN_DESC sd;
     ZeroMemory(&sd, sizeof(sd));
     sd.BufferCount = 2;

examples/example_sdl3_directx11/main.cpp

@@ -205,6 +205,7 @@ int main(int, char**)
 bool CreateDeviceD3D(HWND hWnd)
 {
     // Setup swap chain
+    // This is a basic setup. Optimally could use e.g. DXGI_SWAP_EFFECT_FLIP_DISCARD and handle fullscreen mode differently. See #8979 for suggestions.
     DXGI_SWAP_CHAIN_DESC sd;
     ZeroMemory(&sd, sizeof(sd));
     sd.BufferCount = 2;

examples/example_win32_directx10/main.cpp

@@ -198,6 +198,7 @@ int main(int, char**)
 bool CreateDeviceD3D(HWND hWnd)
 {
     // Setup swap chain
+    // This is a basic setup. Optimally could use e.g. DXGI_SWAP_EFFECT_FLIP_DISCARD and handle fullscreen mode differently. See #8979 for suggestions.
     DXGI_SWAP_CHAIN_DESC sd;
     ZeroMemory(&sd, sizeof(sd));
     sd.BufferCount = 2;

examples/example_win32_directx11/main.cpp

@@ -198,6 +198,7 @@ int main(int, char**)
 bool CreateDeviceD3D(HWND hWnd)
 {
     // Setup swap chain
+    // This is a basic setup. Optimally could use e.g. DXGI_SWAP_EFFECT_FLIP_DISCARD and handle fullscreen mode differently. See #8979 for suggestions.
     DXGI_SWAP_CHAIN_DESC sd;
     ZeroMemory(&sd, sizeof(sd));
     sd.BufferCount = 2;

examples/example_win32_directx12/main.cpp

@@ -312,6 +312,7 @@ int main(int, char**)
 bool CreateDeviceD3D(HWND hWnd)
 {
     // Setup swap chain
+    // This is a basic setup. Optimally could handle fullscreen mode differently. See #8979 for suggestions.
     DXGI_SWAP_CHAIN_DESC1 sd;
     {
         ZeroMemory(&sd, sizeof(sd));
@@ -525,7 +526,7 @@ LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
             DXGI_SWAP_CHAIN_DESC1 desc = {};
             g_pSwapChain->GetDesc1(&desc);
             HRESULT result = g_pSwapChain->ResizeBuffers(0, (UINT)LOWORD(lParam), (UINT)HIWORD(lParam), desc.Format, desc.Flags);
-            assert(SUCCEEDED(result) && "Failed to resize swapchain.");
+            IM_ASSERT(SUCCEEDED(result) && "Failed to resize swapchain.");
             CreateRenderTarget();
         }
         return 0;