71 lines
1.7 KiB
C++
71 lines
1.7 KiB
C++
// Copyright (C) 2017 Jérôme Leclercq
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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/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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UInt32 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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AbstractImage* GuillotineTextureAtlas::ResizeImage(AbstractImage* oldImage, const Vector2ui& size) const
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{
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std::unique_ptr<Texture> newTexture(new Texture);
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if (newTexture->Create(ImageType_2D, PixelFormatType_A8, size.x, size.y, 1))
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{
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if (oldImage)
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{
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Texture* oldTexture = static_cast<Texture*>(oldImage);
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// Copy of old data
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///TODO: Copy from texture to texture
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Image image;
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if (!oldTexture->Download(&image))
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{
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NazaraError("Failed to download old texture");
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return nullptr;
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}
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if (!newTexture->Update(image, Rectui(0, 0, image.GetWidth(), image.GetHeight())))
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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.release();
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}
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else
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{
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// If we are here, it is that the size is too big for the graphic card or we don't have enough
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return nullptr;
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}
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}
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}
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