Light shader, how to generate shadowmaps

[haggi]

For learning reasons I try to create my own lights. Writing a light shader worked fine and so did the shadow shader which produces raytraced shadows. But how can I create shadowmaps automatically? If I use a houdini light which uses shadowmaps, these are automatically created. How can I do it for my own shader to be able to use shadowmaps?

For testing I used a v_rayshadow with the z-Depth option for depth map shadows. Here it is the same, the shadowmap is not automatically generated. "Auto generate Shadow Maps" is turned on in mantra render node.

[symek]

For learning reasons I try to create my own lights. Writing a light shader worked fine and so did the shadow shader which produces raytraced shadows. But how can I create shadowmaps automatically? If I use a houdini light which uses shadowmaps, these are automatically created. How can I do it for my own shader to be able to use shadowmaps?

For testing I used a v_rayshadow with the z-Depth option for depth map shadows. Here it is the same, the shadowmap is not automatically generated. "Auto generate Shadow Maps" is turned on in mantra render node.

This is a soho thing. Basically once soho encounters a "hlight" object with generate shadow maps parameter turned on, it triggers appropriate snippet in the ifd file. I usually overwrite Houdini's own OTL to add new functionality, so I don't have this problem. Anyway, take a look on the end of ifd.py and wranglers/HoudiniLightIFD.py in $HH/soho directory.

hth,

skk.

[haggi]

This is a soho thing. Basically once soho encounters a "hlight" object with generate shadow maps parameter turned on, it triggers appropriate snippet in the ifd file. I usually overwrite Houdini's own OTL to add new functionality, so I don't have this problem. Anyway, take a look on the end of ifd.py and wranglers/HoudiniLightIFD.py in $HH/soho directory.

Thanks, great info.