aras-p

// THIS IS ONLY A PORTION OF THE FILE
// WILL NOT COMPILE OUT OF THE BOX!



void OrthogonalizeTangent (TangentInfo& tangentInfo, Vector3f normalf, Vector4f& outputTangent)
{
	TangentInfo::Vector3d normal   = { normalf.x, normalf.y, normalf.z };
	TangentInfo::Vector3d tangent  = tangentInfo.tangent;
	TangentInfo::Vector3d binormal = tangentInfo.binormal;

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

rygorous

// half->float variants.
// by Fabian "ryg" Giesen.
//
// I hereby place this code in the public domain.
// 
// half_to_float_fast: table based
// tables could be done in a more compact fashion (in particular, can store tab2 in low word of tab1!)
// but something of a dead end since not very SIMD-friendly. pretty much abandoned at this point.
//
// half_to_float_fast2: use FP adder hardware to deal with denormals.