i am looking to understand the code in displace(ex9)

i see that the pixels get pushed

- at angle given by a normalmap (red,green)
- at a distance given by Amount

can someone put the formula into words ?

c=tex2D(s0,lerp(x,tex2D(s1,x2).xy,Amount))

i am looking to understand the code in displace(ex9)

i see that the pixels get pushed

- at angle given by a normalmap (red,green)
- at a distance given by Amount

can someone put the formula into words ?

c=tex2D(s0,lerp(x,tex2D(s1,x2).xy,Amount))

tex2D is texture

s0 is sampler

normally it’s gonna look like tex2d(s0,uv coordinates)

uv gives a point in witch we gonna get float4 color from texture

so we will have uv coordinate “lerp(x,tex2D(s1,x2).xy,Amount” in your case

this says i got original uv coordinate “x” i want to blend it with values from “tex2D(s1,x2).xy” by the Amount.

basically this should distort texture by the red and green color of texture itself, i’m not sure there are something about normal’s here.

look where x2 is coming from… might give you more clue