WIP: CPU and GPU Time include everything

Author: sheazywi

Core/Source/Lux/ImGui/ImGuiRenderer.cpp

@@ -36,7 +36,7 @@ namespace Lux {
 
 		auto device = Application::GetGraphicsDevice();
 
-		m_RenderCommandBuffer = RenderCommandBuffer::Create(0, "ImGuiRenderer");
+		m_RenderCommandBuffer = RenderCommandBuffer::Create(0, "ImGuiRenderer", true);
 
 		Ref<Shader> imguiShader = Renderer::GetShaderLibrary()->Get("ImGui");
 		m_VertexShader = imguiShader->GetHandle(nvrhi::ShaderType::Vertex);
@@ -523,6 +523,11 @@ namespace Lux {
 			swapchain->GetAcquiredImageSemaphore());
 	}
 
+	float ImGuiRenderer::GetGPUTime(uint32_t frameIndex) const
+	{
+		return m_RenderCommandBuffer ? m_RenderCommandBuffer->GetExecutionGPUTime(frameIndex) : 0.0f;
+	}
+
 	void ImGuiRenderer::BackbufferResizing()
 	{
 		m_PipelineCache.clear();

Core/Source/Lux/ImGui/ImGuiRenderer.h

@@ -161,6 +161,7 @@ namespace Lux
 		bool Render(ImGuiViewport* viewport, nvrhi::GraphicsPipelineHandle pipeline, nvrhi::FramebufferHandle framebuffer, VkSemaphore waitSemaphore = nullptr);
 		bool RenderToSwapchain(ImGuiViewport* viewport, VulkanSwapChain* swapchain);
 		void BackbufferResizing();
+		float GetGPUTime(uint32_t frameIndex) const;
 
 		// Register a persistent texture (indices 0-63) - survives across frames.
 		ImTextureID RegisterPersistentTexture(nvrhi::ITexture* texture,

Editor/Source/EditorLayer.cpp

@@ -959,6 +959,14 @@ namespace Lux {
 		const float fps = io.Framerate;
 		const float frameTimeMs = fps > 0.0f ? 1000.0f / fps : 0.0f;
 		const float renderScale = m_SceneRenderer->GetRenderResolutionScale() * 100.0f;
+		const auto& appTimers = Application::Get().GetPerformanceTimers();
+		const float wholeCPUTime = appTimers.MainThreadWorkTime + appTimers.RenderThreadWorkTime;
+		float wholeGPUTime = stats.TotalGPUTime;
+		if (ImGuiLayer* imguiLayer = Application::Get().GetImGuiLayer())
+		{
+			if (ImGuiRenderer* imguiRenderer = imguiLayer->GetImGuiRenderer())
+				wholeGPUTime += imguiRenderer->GetGPUTime(Renderer::GetCurrentFrameIndex());
+		}
 
 		const ImGuiWindowFlags flags = ImGuiWindowFlags_NoDecoration | ImGuiWindowFlags_NoDocking |
 			ImGuiWindowFlags_NoSavedSettings | ImGuiWindowFlags_AlwaysAutoResize |
@@ -969,7 +977,7 @@ namespace Lux {
 		ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(8.0f, 6.0f));
 		ImGui::Begin("##viewport_performance_hud", nullptr, flags);
 		ImGui::Text("FPS %.0f  %.2f ms", fps, frameTimeMs);
-		ImGui::Text("CPU %.2f ms  GPU %.2f ms", stats.TotalCPUTime, stats.TotalGPUTime);
+		ImGui::Text("CPU %.2f ms  GPU %.2f ms", wholeCPUTime, wholeGPUTime);
 		ImGui::Text("Draws %u  Visible %u", stats.DrawCalls, stats.VisibleInstances);
 		ImGui::Text("GPU Visible %u", stats.GPUVisibleInstances);
 		if (memory.BudgetBytes > 0)