hello,
when iy ==0,
I wanna get the result of tex2D(tex,x,y-1), but beyond the boundary,
I know that cudaAddressModeClamp and cudaAddressModeWrap work,
But how to do if I want to make the tex2D(tex,x,y-1) to be zero.
pad your texture with zeros on all sides and use cudaAdressModeClamp?
cudaAdressModeClamp can’t get what I want;
and how to pad with zeros?
Just add a zero doundary to your texture, or simply, just set the boundary zero.
Thank you,but could you give away more details,
Some code example would be best, :)
old texture (3x6):
1 2 3 4
5 6 7 8
9 8 7 6
new texture (5x6)
0 0 0 0 0 0
0 1 2 3 4 0
0 5 6 7 8 0
0 9 8 7 6 0
0 0 0 0 0 0
And then use adressmodeclamp. (and add 1 to all your indices accessing the texture)