NazaraEngine/src/Nazara/Graphics/GuillotineTextureAtlas.cpp

49 lines
1.3 KiB
C++

// Copyright (C) 2015 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/Renderer.hpp>
#include <Nazara/Renderer/Texture.hpp>
#include <Nazara/Graphics/Debug.hpp>
nzUInt32 NzGuillotineTextureAtlas::GetStorage() const
{
return nzDataStorage_Hardware;
}
NzAbstractImage* NzGuillotineTextureAtlas::ResizeImage(NzAbstractImage* oldImage, const NzVector2ui& size) const
{
std::unique_ptr<NzTexture> newTexture(new NzTexture);
if (newTexture->Create(nzImageType_2D, nzPixelFormat_A8, size.x, size.y, 1))
{
if (oldImage)
{
NzTexture* oldTexture = static_cast<NzTexture*>(oldImage);
// Copie des anciennes données
///TODO: Copie de texture à texture
NzImage image;
if (!oldTexture->Download(&image))
{
NazaraError("Failed to download old texture");
return nullptr;
}
if (!newTexture->Update(image, NzRectui(0, 0, image.GetWidth(), image.GetHeight())))
{
NazaraError("Failed to update texture");
return nullptr;
}
}
return newTexture.release();
}
else
{
// Si on arrive ici c'est que la taille demandée est trop grande pour la carte graphique
// ou que nous manquons de mémoire
return nullptr;
}
}