Normal mapping...
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Hello fellow coders,
I've been trying to find a good tangent/texture-space normal mapping tutorial for a long time now.
I've found a few, but they were usually not too good.
What I really don't understand is how I create the matrix which transforms a vector from an arbitrary space, to the actual tangent/texture-space.
So, I would be very thankful if anyone could point me in the right direction, such as recommend any books or online tutorials, or generally just give me some advice...
I can recommend following two pages: theory and implementation. If you're using Direct3D there exists D3DXComputeTangentFrame(Ex) function which can do all the work for you.
Nvidia's MeshMender library will also generate tangents and binormals for a mesh, and should work for either D3D or GL.
I second NVIDIA Meshmender. ShaderX4 has the source of Cryteks tangent space generation system ... pretty cool.
ShaderX5 shows you how you can generate tangent space in a pixel shader .. if you are really memory limited this might be an option.
ShaderX5 shows you how you can generate tangent space in a pixel shader .. if you are really memory limited this might be an option.
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