mat3 BuildTangentSpace(const vec3 normal, const vec4 signedTangent)
{
	vec3 tangent = signedTangent.xyz;
	vec3 bitangent = cross(normal, tangent) * signedTangent.w;
	return mat3(tangent, bitangent, normal);
}

mat3 BuildTangentSpace(const mat3 modelTransform, const vec3 normal, const vec4 signedTangent)
{
	vec3 tangent = signedTangent.xyz;
	vec3 bitangent = cross(normal, tangent) * signedTangent.w;
	return mat3(mul(tangent, modelTransform),
		mul(bitangent, modelTransform),
		mul(normal, modelTransform));
}

void BuildTangentSpace(const mat3 modelTransform, const vec3 normal, const vec4 signedTangent, out vec3 worldTangent, out vec3 worldBitangent)
{
	vec3 tangent = signedTangent.xyz;
	vec3 bitangent = cross(normal, tangent) * signedTangent.w;
	worldTangent = mul(tangent, modelTransform);
	worldBitangent = mul(bitangent, modelTransform);
}