Method GetAtlasTextureForSbit

trinity/Font/Tr2FontManager.cpp:430–558

}

bool Tr2FontManager::GetAtlasTextureForSbit( FTC_SBit sbit, Tr2AtlasTexture** at )
{
	auto foundItInUse = m_sbitToTextureMap.find( sbit );
	if( foundItInUse != m_sbitToTextureMap.end() )
	{
		// CCP_LOG( __FUNCTION__ " found sbit (%d in map)", m_sbitToTextureMap.size() );

		IWeakObject* weakObj = foundItInUse->second;
		weakObj->QueryInterface( BlueInterfaceIID<Tr2AtlasTexture>(), (void**)at );
		return true;
	}

	auto foundItInCache = m_sbitToCachedTextureMap.find( sbit );
	if( foundItInCache != m_sbitToCachedTextureMap.end() )
	{
		// CCP_LOG( __FUNCTION__ " found sbit in cache (%d in cache)", m_sbitToCachedTextureMap.size() );

		FTC_SBit sbit = foundItInCache->first;
		GlyphCacheEntry& entry = foundItInCache->second;
		IWeakObject* weakObj = entry.glyphObject;
		m_totalGlyphsCachedSize -= entry.memoryUsage;

		// Move it from the cache to the main map
		m_sbitToCachedTextureMap.erase( foundItInCache );

		// entry is no longer valid - do not reference it below

		m_sbitToTextureMap[sbit] = weakObj;
		m_textureToSbitMap[weakObj] = sbit;

		// Register it for future about-to-die notifications.
		weakObj->WeakRefRegister( this );
		weakObj->QueryInterface( BlueInterfaceIID<Tr2AtlasTexture>(), (void**)at );

		// Drop the strong reference the cached map used to hold.
		weakObj->Unlock();
		return true;
	}

	// First time we see this sbit - create an atlas texture and copy the pixels over
	*at = nullptr;

	Tr2TextureAtlas* atlas = g_textureAtlasMan->FindAtlas( PIXEL_FORMAT_B8G8R8A8_UNORM );
	if( !atlas )
	{
		return false;
	}

	// We add one pixel to allow for potential drop-shadow

	Tr2AtlasTexturePtr tex;
	ALResult al = atlas->CreateTexture( sbit->width, sbit->height + 1, Tr2TextureAtlas::ATT_DEFAULT, &tex );
	if( !tex )
	{
		return false;
	}

	void* pDest;