Dependencies:

• lygia/sample/2DCube.glsl
• lygia/space/scale.glsl
• lygia/sdf/boxSDF.glsl
• lygia/sdf/opIntersection.glsl

Use:

<vecSAMPLE3DSDF_TYPE4> sample3DSdf(in <SAMPLER_TYPE> lut, in <vec3> xyz)

Check it on Github