Graphics: Add DebugDrawer support

src/Nazara/Graphics/DebugDrawPipelinePass.cpp

@@ -0,0 +1,47 @@
+// Copyright (C) 2022 Jérôme "Lynix" Leclercq (lynix680@gmail.com)
+// This file is part of the "Nazara Engine - Graphics module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/Graphics/DebugDrawPipelinePass.hpp>
+#include <Nazara/Graphics/AbstractViewer.hpp>
+#include <Nazara/Renderer/RenderFrame.hpp>
+#include <Nazara/Graphics/Debug.hpp>
+
+namespace Nz
+{
+	DebugDrawPipelinePass::DebugDrawPipelinePass(FramePipeline& owner, AbstractViewer* viewer) :
+	m_viewer(viewer),
+	m_pipeline(owner)
+	{
+	}
+
+	void DebugDrawPipelinePass::Prepare(RenderFrame& renderFrame)
+	{
+		DebugDrawer& debugDrawer = m_pipeline.GetDebugDrawer();
+		debugDrawer.SetViewerData(m_viewer->GetViewerInstance().GetViewProjMatrix());
+		debugDrawer.Prepare(renderFrame);
+	}
+
+	void DebugDrawPipelinePass::RegisterToFrameGraph(FrameGraph& frameGraph, std::size_t inputColorBufferIndex, std::size_t outputColorBufferIndex)
+	{
+		FramePass& debugDrawPass = frameGraph.AddPass("Debug draw pass");
+		debugDrawPass.AddInput(inputColorBufferIndex);
+		debugDrawPass.AddOutput(outputColorBufferIndex);
+
+		debugDrawPass.SetExecutionCallback([&]()
+		{
+			return FramePassExecution::UpdateAndExecute;
+		});
+
+		debugDrawPass.SetCommandCallback([this](CommandBufferBuilder& builder, const FramePassEnvironment& /*env*/)
+		{
+			Recti viewport = m_viewer->GetViewport();
+
+			builder.SetScissor(viewport);
+			builder.SetViewport(viewport);
+
+			DebugDrawer& debugDrawer = m_pipeline.GetDebugDrawer();
+			debugDrawer.Draw(builder);
+		});
+	}
+}