HLSL: Computing Tangent/Binormal from Normal

float3 normal = mul(normalize(input.Normal), World);

// [0] Tangent / [1] Binormal / [2] Normal
output.WorldToTangentSpace[0] = cross(normal, float3(-1.0, 0.0, 0.0));
output.WorldToTangentSpace[1] = cross(output.WorldToTangentSpace[0], normal);
output.WorldToTangentSpace[2] = normal;