73 lines
2.0 KiB
C++
73 lines
2.0 KiB
C++
// Copyright (C) 2023 Jérôme "Lynix" Leclercq (lynix680@gmail.com)
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// This file is part of the "Nazara Engine - Graphics module"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#include <Nazara/Graphics/GuillotineTextureAtlas.hpp>
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#include <Nazara/Renderer/RenderDevice.hpp>
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#include <Nazara/Renderer/Texture.hpp>
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#include <Nazara/Graphics/Debug.hpp>
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namespace Nz
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{
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/*!
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* \ingroup graphics
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* \class Nz::GuillotineTextureAtlas
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* \brief Graphics class that represents an atlas texture for guillotine
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*/
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/*!
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* \brief Gets the underlying data storage
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* \return Value of the enumeration of the underlying data storage
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*/
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DataStoreFlags GuillotineTextureAtlas::GetStorage() const
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{
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return DataStorage::Hardware;
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}
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/*!
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* \brief Resizes the image
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* \return Updated texture
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*
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* \param oldImage Old image to resize
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* \param size New image size
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*
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* \remark Produces a NazaraError if resize failed
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*/
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std::shared_ptr<AbstractImage> GuillotineTextureAtlas::ResizeImage(const std::shared_ptr<AbstractImage>& oldImage, const Vector2ui& size) const
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{
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TextureInfo textureInfo;
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textureInfo.width = size.x;
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textureInfo.height = size.y;
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textureInfo.pixelFormat = PixelFormat::R8;
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textureInfo.type = ImageType::E2D;
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textureInfo.usageFlags = TextureUsage::ShaderSampling | TextureUsage::TransferSource | TextureUsage::TransferDestination;
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textureInfo.levelCount = 1; //< FIXME: Disable mipmaps for now
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std::shared_ptr<Texture> newTexture;
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try
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{
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newTexture = m_renderDevice.InstantiateTexture(textureInfo);
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}
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catch (const std::exception& e)
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{
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NazaraError(std::string("Failed to instantiate texture: ") + e.what());
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return nullptr;
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}
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if (oldImage)
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{
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const Texture& oldTexture = static_cast<const Texture&>(*oldImage);
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Vector3ui oldSize = oldTexture.GetSize();
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if (!newTexture->Copy(oldTexture, Boxui(0, 0, 0, oldSize.x, oldSize.y, oldSize.z)))
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{
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NazaraError("Failed to update texture");
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return nullptr;
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}
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}
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return newTexture;
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}
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}
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