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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));
}