private int GetVertexCountFromIndexBuffer(
AMemory Memory,
long IndexPosition,
int IndexCount,
int IndexSize)
{
int MaxIndex = -1;
if (IndexSize == 2)
{
while (IndexCount-- > 0)
{
ushort Value = Memory.ReadUInt16(IndexPosition);
IndexPosition += 2;
if (MaxIndex < Value)
{
MaxIndex = Value;
}
}
}
else if (IndexSize == 1)
{
while (IndexCount-- > 0)
{
byte Value = Memory.ReadByte(IndexPosition++);
if (MaxIndex < Value)
{
MaxIndex = Value;
}
}
}
else if (IndexSize == 4)
{
while (IndexCount-- > 0)
{
uint Value = Memory.ReadUInt32(IndexPosition);
IndexPosition += 2;
if (MaxIndex < Value)
{
MaxIndex = (int)Value;
}
}
}
else
{
throw new ArgumentOutOfRangeException(nameof(IndexSize));
}
return(MaxIndex + 1);
}
