Graphics: Add RenderTextureBlit

include/Nazara/Graphics.hpp

@@ -82,6 +82,7 @@
 #include <Nazara/Graphics/RenderSubmesh.hpp>
 #include <Nazara/Graphics/RenderTarget.hpp>
 #include <Nazara/Graphics/RenderTexture.hpp>
+#include <Nazara/Graphics/RenderTextureBlit.hpp>
 #include <Nazara/Graphics/RenderWindow.hpp>
 #include <Nazara/Graphics/ShaderReflection.hpp>
 #include <Nazara/Graphics/ShadowViewer.hpp>

include/Nazara/Graphics/RenderTextureBlit.hpp

@@ -0,0 +1,48 @@
+// Copyright (C) 2023 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
+
+#pragma once
+
+#ifndef NAZARA_GRAPHICS_RENDERTEXTUREBLIT_HPP
+#define NAZARA_GRAPHICS_RENDERTEXTUREBLIT_HPP
+
+#include <NazaraUtils/Prerequisites.hpp>
+#include <Nazara/Graphics/Config.hpp>
+#include <Nazara/Graphics/RenderTarget.hpp>
+#include <Nazara/Renderer/Enums.hpp>
+
+namespace Nz
+{
+	class Texture;
+
+	class NAZARA_GRAPHICS_API RenderTextureBlit : public RenderTarget
+	{
+		public:
+			inline RenderTextureBlit(const Vector2ui& textureSize, std::shared_ptr<Texture> targetTexture, SamplerFilter filter = SamplerFilter::Linear);
+			inline RenderTextureBlit(const Vector2ui& textureSize, std::shared_ptr<Texture> targetTexture, SamplerFilter filter, PipelineStage targetPipelineStage, MemoryAccessFlags targetMemoryFlags, TextureLayout targetLayout);
+			RenderTextureBlit(const RenderTextureBlit&) = delete;
+			RenderTextureBlit(RenderTextureBlit&&) = delete;
+			~RenderTextureBlit() = default;
+
+			void OnBuildGraph(FrameGraph& graph, std::size_t attachmentIndex) const override;
+			void OnRenderEnd(RenderFrame& renderFrame, const BakedFrameGraph& frameGraph, std::size_t finalAttachment) const override;
+
+			const Vector2ui& GetSize() const override;
+
+			RenderTextureBlit& operator=(const RenderTextureBlit&) = delete;
+			RenderTextureBlit& operator=(RenderTextureBlit&&) = delete;
+
+		private:
+			std::shared_ptr<Texture> m_targetTexture;
+			MemoryAccessFlags m_targetMemoryFlags;
+			PipelineStage m_targetPipelineStage;
+			SamplerFilter m_samplerFilter;
+			TextureLayout m_targetLayout;
+			Vector2ui m_textureSize;
+	};
+}
+
+#include <Nazara/Graphics/RenderTextureBlit.inl>
+
+#endif // NAZARA_GRAPHICS_RENDERTEXTUREBLIT_HPP

include/Nazara/Graphics/RenderTextureBlit.inl

@@ -0,0 +1,25 @@
+// Copyright (C) 2023 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/Debug.hpp>
+
+namespace Nz
+{
+	inline RenderTextureBlit::RenderTextureBlit(const Vector2ui& textureSize, std::shared_ptr<Texture> targetTexture, SamplerFilter filter) :
+	RenderTextureBlit(textureSize, std::move(targetTexture), filter, PipelineStage::FragmentShader, MemoryAccess::ColorRead, TextureLayout::ColorInput)
+	{
+	}
+	
+	RenderTextureBlit::RenderTextureBlit(const Vector2ui& textureSize, std::shared_ptr<Texture> texture, SamplerFilter filter, PipelineStage targetPipelineStage, MemoryAccessFlags targetMemoryFlags, TextureLayout targetLayout) :
+	m_targetTexture(std::move(texture)),
+	m_targetMemoryFlags(targetMemoryFlags),
+	m_targetPipelineStage(targetPipelineStage),
+	m_samplerFilter(filter),
+	m_targetLayout(targetLayout),
+	m_textureSize(textureSize)
+	{
+	}
+}
+
+#include <Nazara/Graphics/DebugOff.hpp>

src/Nazara/Graphics/RenderTextureBlit.cpp

@@ -0,0 +1,47 @@
+// Copyright (C) 2023 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/RenderTextureBlit.hpp>
+#include <Nazara/Graphics/BakedFrameGraph.hpp>
+#include <Nazara/Graphics/FrameGraph.hpp>
+#include <Nazara/Renderer/CommandBufferBuilder.hpp>
+#include <Nazara/Renderer/Texture.hpp>
+#include <Nazara/Graphics/Debug.hpp>
+
+namespace Nz
+{
+	void RenderTextureBlit::OnBuildGraph(FrameGraph& graph, std::size_t attachmentIndex) const
+	{
+		graph.AddOutput(attachmentIndex);
+	}
+
+	void RenderTextureBlit::OnRenderEnd(RenderFrame& renderFrame, const BakedFrameGraph& frameGraph, std::size_t finalAttachment) const
+	{
+		const std::shared_ptr<Texture>& sourceTexture = frameGraph.GetAttachmentTexture(finalAttachment);
+
+		Vector2ui sourceTextureSize = Vector2ui(sourceTexture->GetSize());
+		Vector2ui targetTextureSize = Vector2ui(m_targetTexture->GetSize());
+
+		renderFrame.Execute([&](CommandBufferBuilder& builder)
+		{
+			builder.BeginDebugRegion("Blit to texture", Color::Blue());
+			{
+				builder.TextureBarrier(PipelineStage::ColorOutput, PipelineStage::Transfer, MemoryAccess::ColorWrite, MemoryAccess::TransferRead, TextureLayout::ColorOutput, TextureLayout::TransferSource, *sourceTexture);
+				builder.TextureBarrier(PipelineStage::TopOfPipe, PipelineStage::Transfer, {}, MemoryAccess::TransferWrite, TextureLayout::Undefined, TextureLayout::TransferDestination, *m_targetTexture);
+
+				Boxui fromBox(0, 0, 0, sourceTextureSize.x, sourceTextureSize.y, 1);
+				Boxui toBox(0, 0, 0, targetTextureSize.x, targetTextureSize.y, 1);
+
+				builder.BlitTexture(*sourceTexture, fromBox, TextureLayout::TransferSource, *m_targetTexture, toBox, TextureLayout::TransferDestination, m_samplerFilter);
+				builder.TextureBarrier(PipelineStage::Transfer, m_targetPipelineStage, MemoryAccess::TransferWrite, m_targetMemoryFlags, TextureLayout::TransferDestination, m_targetLayout, *m_targetTexture);
+			}
+			builder.EndDebugRegion();
+		}, QueueType::Graphics);
+	}
+
+	const Vector2ui& RenderTextureBlit::GetSize() const
+	{
+		return m_textureSize;
+	}
+}