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Examples: DirectX9: Fixes for multi-viewports, destroying all swap chains. (#2520, #2502)

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This commit is contained in:
omar
2019-05-06 12:07:29 +02:00
parent 76e61958fd
commit 9ddb8493d5
2 changed files with 30 additions and 5 deletions
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33
examples/imgui_impl_dx9.cpp
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@@ -11,7 +11,7 @@
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
// 2018-XX-XX: Platform: Added support for multiple windows via the ImGuiPlatformIO interface.
// 2019-XX-XX: Platform: Added support for multiple windows via the ImGuiPlatformIO interface.
// 2019-04-30: DirectX9: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
// 2019-03-29: Misc: Fixed erroneous assert in ImGui_ImplDX9_InvalidateDeviceObjects().
// 2019-01-16: Misc: Disabled fog before drawing UI's. Fixes issue #2288.
@@ -48,6 +48,8 @@ struct CUSTOMVERTEX
// Forward Declarations
static void ImGui_ImplDX9_InitPlatformInterface();
static void ImGui_ImplDX9_ShutdownPlatformInterface();
static void ImGui_ImplDX9_CreateDeviceObjectsForPlatformWindows();
static void ImGui_ImplDX9_InvalidateDeviceObjectsForPlatformWindows();
static void ImGui_ImplDX9_SetupRenderState(ImDrawData* draw_data)
{
@@ -272,6 +274,7 @@ bool ImGui_ImplDX9_CreateDeviceObjects()
return false;
if (!ImGui_ImplDX9_CreateFontsTexture())
return false;
ImGui_ImplDX9_CreateDeviceObjectsForPlatformWindows();
return true;
}
@@ -282,6 +285,7 @@ void ImGui_ImplDX9_InvalidateDeviceObjects()
if (g_pVB) { g_pVB->Release(); g_pVB = NULL; }
if (g_pIB) { g_pIB->Release(); g_pIB = NULL; }
if (g_FontTexture) { g_FontTexture->Release(); g_FontTexture = NULL; ImGui::GetIO().Fonts->TexID = NULL; } // We copied g_pFontTextureView to io.Fonts->TexID so let's clear that as well.
ImGui_ImplDX9_InvalidateDeviceObjectsForPlatformWindows();
}
void ImGui_ImplDX9_NewFrame()
@@ -316,13 +320,16 @@ static void ImGui_ImplDX9_CreateWindow(ImGuiViewport* viewport)
ZeroMemory(&data->d3dpp, sizeof(D3DPRESENT_PARAMETERS));
data->d3dpp.Windowed = TRUE;
data->d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
data->d3dpp.BackBufferWidth = (UINT)viewport->Size.x;
data->d3dpp.BackBufferHeight = (UINT)viewport->Size.y;
data->d3dpp.BackBufferFormat = D3DFMT_UNKNOWN;
data->d3dpp.hDeviceWindow = hWnd;
data->d3dpp.EnableAutoDepthStencil = TRUE;
data->d3dpp.AutoDepthStencilFormat = D3DFMT_D16;
data->d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE; // Present without vsync
g_pd3dDevice->CreateAdditionalSwapChain(&data->d3dpp, &data->SwapChain);
HRESULT hr = g_pd3dDevice->CreateAdditionalSwapChain(&data->d3dpp, &data->SwapChain); IM_UNUSED(hr);
IM_ASSERT(hr == D3D_OK);
IM_ASSERT(data->SwapChain != NULL);
}
@@ -349,7 +356,8 @@ static void ImGui_ImplDX9_SetWindowSize(ImGuiViewport* viewport, ImVec2 size)
data->SwapChain = NULL;
data->d3dpp.BackBufferWidth = (UINT)size.x;
data->d3dpp.BackBufferHeight = (UINT)size.y;
g_pd3dDevice->CreateAdditionalSwapChain(&data->d3dpp, &data->SwapChain);
HRESULT hr = g_pd3dDevice->CreateAdditionalSwapChain(&data->d3dpp, &data->SwapChain); IM_UNUSED(hr);
IM_ASSERT(hr == D3D_OK);
}
}
@@ -381,7 +389,8 @@ static void ImGui_ImplDX9_RenderWindow(ImGuiViewport* viewport, void*)
static void ImGui_ImplDX9_SwapBuffers(ImGuiViewport* viewport, void*)
{
ImGuiViewportDataDx9* data = (ImGuiViewportDataDx9*)viewport->RendererUserData;
data->SwapChain->Present(NULL, NULL, data->d3dpp.hDeviceWindow, NULL, NULL);
HRESULT hr = data->SwapChain->Present(NULL, NULL, data->d3dpp.hDeviceWindow, NULL, NULL);
IM_ASSERT(hr == D3D_OK);
}
static void ImGui_ImplDX9_InitPlatformInterface()
@@ -398,3 +407,19 @@ static void ImGui_ImplDX9_ShutdownPlatformInterface()
{
ImGui::DestroyPlatformWindows();
}
static void ImGui_ImplDX9_CreateDeviceObjectsForPlatformWindows()
{
ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
for (int i = 1; i < platform_io.Viewports.Size; i++)
if (!platform_io.Viewports[i]->RendererUserData)
ImGui_ImplDX9_CreateWindow(platform_io.Viewports[i]);
}
static void ImGui_ImplDX9_InvalidateDeviceObjectsForPlatformWindows()
{
ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
for (int i = 1; i < platform_io.Viewports.Size; i++)
if (platform_io.Viewports[i]->RendererUserData)
ImGui_ImplDX9_DestroyWindow(platform_io.Viewports[i]);
}

2
examples/imgui_impl_dx9.h
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@@ -19,5 +19,5 @@ IMGUI_IMPL_API void ImGui_ImplDX9_NewFrame();
IMGUI_IMPL_API void ImGui_ImplDX9_RenderDrawData(ImDrawData* draw_data);
// Use if you want to reset your rendering device without losing ImGui state.
IMGUI_IMPL_API void ImGui_ImplDX9_InvalidateDeviceObjects();
IMGUI_IMPL_API bool ImGui_ImplDX9_CreateDeviceObjects();
IMGUI_IMPL_API void ImGui_ImplDX9_InvalidateDeviceObjects();