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Fix ImGui rendering in-Editor

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-Ensure ViewportContext rendertick notifications always fire
-Use viewport size to determine ImGui resolution, ensure OnViewportSizeChanged is always up-to-date for the default viewport context
This commit is contained in:
nvsickle
2021-04-20 14:36:11 -07:00
parent 5ea2240787
commit ba5e0170a2
5 changed files with 34 additions and 4 deletions
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Gems/AtomLyIntegration/ImguiAtom/Code/Source/ImguiAtomSystemComponent.cpp
+16
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@@ -58,6 +58,15 @@ namespace AZ
auto atomViewportRequests = AZ::Interface<AZ::RPI::ViewportContextRequestsInterface>::Get();
const AZ::Name contextName = atomViewportRequests->GetDefaultViewportContextName();
AZ::RPI::ViewportContextNotificationBus::Handler::BusConnect(contextName);
#if defined(IMGUI_ENABLED)
ImGui::ImGuiManagerListenerBus::Broadcast(&ImGui::IImGuiManagerListener::SetResolutionMode, ImGui::ImGuiResolutionMode::LockToResolution);
auto defaultViewportContext = atomViewportRequests->GetDefaultViewportContext();
if (defaultViewportContext)
{
OnViewportSizeChanged(defaultViewportContext->GetViewportSize());
}
#endif
}
void ImguiAtomSystemComponent::Deactivate()
@@ -75,6 +84,13 @@ namespace AZ
{
#if defined(IMGUI_ENABLED)
ImGui::ImGuiManagerListenerBus::Broadcast(&ImGui::IImGuiManagerListener::Render);
#endif
}
void ImguiAtomSystemComponent::OnViewportSizeChanged(AzFramework::WindowSize size)
{
#if defined(IMGUI_ENABLED)
ImGui::ImGuiManagerListenerBus::Broadcast(&ImGui::IImGuiManagerListener::SetImGuiRenderResolution, ImVec2{aznumeric_cast<float>(size.m_width), aznumeric_cast<float>(size.m_height)});
#endif
}
}