Joseph Silverman

Hi, I'm not sure which subforum to post this in, hopefully this is ok!

I recently ran into some issues using a slightly outdated version of the SideFX Labs Maps Baker node in Houdini 18, where there was a significant (half pixel) offset on my baked result. The solution is to add half half a pixel to the X and Y globals before using them with a uvsample call. I noticed when making this post that this fix had been updated in the most recent build of the sideFX Labs tools.

The cop2 vex context documentation [www.sidefx.com] describes X and Y as:

location of the center of the current pixel being shaded in the range 0 to 1. Zero being the bottom of the image, and 1 being the top.

The behavior described above would lead me to believe that the X and Y globals actually return the top left corner of the current pixel. Are the docs wrong, or is something else going on here?

Hi, I'm having an issue with this node. Perhaps a bug, or a lack of houdini understanding on my part. I'm trying to bake vertex colors from a frame sequence mypath/myname.$F6.png, but after baking a given frame all subsequent bakes seem to cache and output that original frame, whether output by playing on the timeline with manual mode disabled, selecting a frame and manually clicking bake, or using this script:

import hou

node = hou.node('/obj/file1/sop_maps_baker1')

for i in range(int(hou.hscriptExpression(“$FSTART”)),int(hou.hscriptExpression(“$FEND”))):
hou.setFrame(i)
hou.ui.triggerUpdate()
node.parm('newparameter').pressButton()

Is this the intended functionality? If so, where should I look to modify this node to suit my needs?