Implement back text rendering (WIP)

src/Nazara/Graphics/GuillotineTextureAtlas.cpp

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+// Copyright (C) 2017 Jérôme Leclercq
+// 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/GuillotineTextureAtlas.hpp>
+#include <Nazara/Renderer/RenderDevice.hpp>
+#include <Nazara/Renderer/Texture.hpp>
+#include <Nazara/Graphics/Debug.hpp>
+
+namespace Nz
+{
+	/*!
+	* \ingroup graphics
+	* \class Nz::GuillotineTextureAtlas
+	* \brief Graphics class that represents an atlas texture for guillotine
+	*/
+
+	/*!
+	* \brief Gets the underlying data storage
+	* \return Value of the enumeration of the underlying data storage
+	*/
+	DataStoreFlags GuillotineTextureAtlas::GetStorage() const
+	{
+		return DataStorage::Hardware;
+	}
+
+	/*!
+	* \brief Resizes the image
+	* \return Updated texture
+	*
+	* \param oldImage Old image to resize
+	* \param size New image size
+	*
+	* \remark Produces a NazaraError if resize failed
+	*/
+
+	std::shared_ptr<AbstractImage> GuillotineTextureAtlas::ResizeImage(const std::shared_ptr<AbstractImage>& oldImage, const Vector2ui& size) const
+	{
+		TextureInfo textureInfo;
+		textureInfo.width = size.x;
+		textureInfo.height = size.y;
+		textureInfo.pixelFormat = PixelFormat::A8;
+		textureInfo.type = ImageType::E2D;
+		
+		std::shared_ptr<Texture> newTexture = m_renderDevice.InstantiateTexture(textureInfo);
+		if (!newTexture)
+			return nullptr;
+
+		if (oldImage)
+		{
+			return nullptr;
+			/*const Texture& oldTexture = static_cast<const Texture&>(*oldImage);
+
+			// Copy of old data
+			///TODO: Copy from texture to texture
+			Image image;
+			if (!oldTexture->Download(&image))
+			{
+				NazaraError("Failed to download old texture");
+				return nullptr;
+			}
+
+			if (!newTexture->Update(&image, Rectui(0, 0, image.GetWidth(), image.GetHeight())))
+			{
+				NazaraError("Failed to update texture");
+				return nullptr;
+			}*/
+		}
+
+		return newTexture;
+	}
+}