// Allocates all buffers to serve the given updates and comes up with a spot
// for the state block of each device. Returns the new state blocks for the
// devices (it will *NOT* install them on the devices).
public uint[] AllocateAll(InputDevice[] devices, int deviceCount)
{
uint[] newDeviceOffsets = null;
sizePerBuffer = ComputeSizeOfSingleBufferAndOffsetForEachDevice(devices, deviceCount, ref newDeviceOffsets);
if (sizePerBuffer == 0)
{
return(null);
}
sizePerBuffer = sizePerBuffer.AlignToMultipleOf(4);
// Determine how much memory we need.
var mappingTableSizePerBuffer = (uint)(deviceCount * sizeof(void *) * 2);
totalSize = 0;
totalSize += sizePerBuffer * 2;
totalSize += mappingTableSizePerBuffer;
#if UNITY_EDITOR
totalSize += sizePerBuffer * 2;
totalSize += mappingTableSizePerBuffer;
#endif
// Plus 2 more buffers (1 for default states, and one for noise masks).
totalSize += sizePerBuffer * 2;
// Allocate.
m_AllBuffers = UnsafeUtility.Malloc(totalSize, 4, Allocator.Persistent);
UnsafeUtility.MemClear(m_AllBuffers, totalSize);
// Set up device to buffer mappings.
var ptr = (byte *)m_AllBuffers;
m_PlayerStateBuffers =
SetUpDeviceToBufferMappings(devices, deviceCount, ref ptr, sizePerBuffer,
mappingTableSizePerBuffer);
#if UNITY_EDITOR
m_EditorStateBuffers =
SetUpDeviceToBufferMappings(devices, deviceCount, ref ptr, sizePerBuffer, mappingTableSizePerBuffer);
#endif
// Default state and noise filter buffers go last.
defaultStateBuffer = ptr;
noiseMaskBuffer = ptr + sizePerBuffer;
return(newDeviceOffsets);
}