384         GrVkTransferBuffer* transferBuffer =  in uploadTexData()  local
387         void* mapPtr = transferBuffer->map();  in uploadTexData()
407         transferBuffer->unmap();  in uploadTexData()
410         transferBuffer->addMemoryBarrier(this,  in uploadTexData()
450                                              transferBuffer,  in uploadTexData()
459         transferBuffer->unref();  in uploadTexData()
1130     GrVkTransferBuffer* transferBuffer =   in onReadPixels()  local
1154                                          transferBuffer,  in onReadPixels()
1159     transferBuffer->addMemoryBarrier(this,  in onReadPixels()
1170     void* mappedMemory = transferBuffer->map();  in onReadPixels()
1174     transferBuffer->unmap();  in onReadPixels()
1175     transferBuffer->unref();  in onReadPixels()