Method GetOrCreateCachedTexture

Source/HLEGraphics/TextureCache.cpp:169–226

If already in table, return cached copy Otherwise, create surfaces, and load texture into memory

// If already in table, return cached copy
// Otherwise, create surfaces, and load texture into memory
CachedTexture * CTextureCache::GetOrCreateCachedTexture(const TextureInfo & ti)
{
	#ifdef DAEDALUS_ENABLE_PROFILING
		DAEDALUS_PROFILE( "CTextureCache::GetOrCreateCachedTexture" );
	#endif
	// NB: this is a no-op in normal builds.
	MutexLock lock(GetDebugMutex());

	//
	// Retrieve the texture from the cache (if it already exists)
	//
	u32	ixa {MakeHashIdxA( ti )};
	if( mpCacheHashTable[ixa] && mpCacheHashTable[ixa]->GetTextureInfo() == ti )
	{
		RECORD_CACHE_HIT( 1, 0 );
		mpCacheHashTable[ixa]->UpdateIfNecessary();

		return mpCacheHashTable[ixa];
	}

	u32 ixb {MakeHashIdxB( ti )};
	if( mpCacheHashTable[ixb] && mpCacheHashTable[ixb]->GetTextureInfo() == ti )
	{
		RECORD_CACHE_HIT( 1, 0 );
		mpCacheHashTable[ixb]->UpdateIfNecessary();

		return mpCacheHashTable[ixb];
	}

	CachedTexture *	texture = nullptr;
	TextureVec::iterator	it = std::lower_bound( mTextures.begin(), mTextures.end(), ti, SSortTextureEntries() );
	if( it != mTextures.end() && (*it)->GetTextureInfo() == ti )
	{
		texture = *it;
		RECORD_CACHE_HIT( 0, 1 );
	}
	else
	{
		texture = CachedTexture::Create( ti );
		if (texture != nullptr)
		{
			mTextures.insert( it, texture );
		}

		RECORD_CACHE_HIT( 0, 0 );
	}

	// Update the hashtable
	if( texture )
	{
		texture->UpdateIfNecessary();

		mpCacheHashTable[ixa] = texture;
		mpCacheHashTable[ixb] = texture;
	}

	return texture;
}