Method Expand

trinity/Tr2SuballocatedBuffer.cpp:123–163

}

ALResult Tr2SuballocatedBuffer::Expand()
{
	USE_MAIN_THREAD_RENDER_CONTEXT();

	//We have reached the allocator's max size. This probably means we're leaking a lot of memory.
	if( m_allocator.GetCurrentSize() == m_allocator.GetMaxSize() )
	{
		CCP_LOGERR( "Max size reached for buffer '%s'. This probably means we're leaking a lot of memory.", m_name.c_str() );
		return E_OUTOFMEMORY;
	}

	uint32_t oldBufferSize = static_cast<uint32_t>( m_allocator.GetCurrentSize() );
	uint32_t newBufferSize = oldBufferSize + static_cast<uint32_t>( m_allocator.GetBlockSize() );

	Tr2BufferAL newBuffer;
	Tr2BufferDescriptionAL desc( 1, newBufferSize, m_gpuUsage, Tr2CpuUsage::READ | Tr2CpuUsage::WRITE );
	ALResult result = newBuffer.Create( desc, nullptr, renderContext );
	if( FAILED( result ) )
	{
		CCP_LOGERR( "Failed to allocate %zu MBs for buffer '%s'.", newBufferSize / size_t( 1024 * 1024 ), m_name.c_str() );
		return result;
	}
	newBuffer.SetName( m_name.c_str() );

	//If the previous buffer had valid data, we copy it over to the new buffer.
	if( m_buffer.IsValid() )
	{
		renderContext.CopySubBuffer( newBuffer, 0, m_buffer, 0, oldBufferSize );
	}

	m_buffer = newBuffer;

	m_allocator.Expand(); //Cannot fail, as we checked this first.

	CCP_ASSERT( m_allocator.GetCurrentSize() == newBufferSize );

	CCP_LOG( "Allocating more buffer memory for buffer '%s'. Total memory allocated: %zu MBs", m_name.c_str(), newBufferSize / size_t( 1024 * 1024 ) );
	CCP_STATS_SET( suballocatedBufferCapacity, m_allocator.GetMaxSize() );

	return S_OK;
}

ALResult Tr2SuballocatedBuffer::ReadBuffer( std::unique_ptr<uint8_t[]>& dest, uint32_t offset, uint32_t size, Tr2RenderContextAL& renderContext )
{