how to get tangent in HLSL?

comicsteam · Post by **comicsteam** » Fri Mar 20, 2009 9:08 am

i want to make my own tangent space normal mapping shader.
in HLSL, i can get the position, normal, texture coordinate through POSITION, NORMAL, TEXCOORD0 respectively.
however, i cannot get the tangent through TANGENT.
how can i get the tangent in HLSL?

comicsteam · Post by **comicsteam** » Fri Mar 20, 2009 6:48 pm

does anyone know how to solve this problem?

BlindSide · Post by **BlindSide** » Fri Mar 20, 2009 8:57 pm

Once you generate a tangent mesh using SceneManager->getMeshManipulator(), you can access the tangents and binormals using the TEXCOORD1 and TEXCOORD2 semantics respectively.

comicsteam · Post by **comicsteam** » Sat Mar 21, 2009 7:05 am

BlindSide wrote:Once you generate a tangent mesh using SceneManager->getMeshManipulator(), you can access the tangents and binormals using the TEXCOORD1 and TEXCOORD2 semantics respectively.

Thanks for your help~