The exact same workflow applies for the Float attributes but with one extra step – you need to pay attention to the component of the Channel that the float attribute is assigned to, and specify that same component in the Sub Channel drop-down. In the picture to the left, you can see that the opacity attribute we created in Houdini is mapped to Channel 4 under the Red (named r_opacity where r_ means the Red component, g_ means the Green component and b_ means the Blue component) component. To pull ONLY the opacity attribute, we have set the Sub Channel drop-down to Red. If we want to map the opacity based on the life attribute, we would have to pick Channel 3 and Sub Channel Green. |