Forums Technical Discussion 2.5D Matte Painting (AKA Camera Projection Mapping)

2.5D Matte Painting (AKA Camera Projection Mapping)

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jsmack
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I made a working camera projection setup that works for karma in solaris with mtlx shaders.
Edited by jsmack - 2021年11月4日 12:13:09

Attachments:
Screenshot 2021-11-04 090807.png (547.3 KB)
karma_mtlx_camera_projection.hip (750.0 KB)

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tekkonkinkreet
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jsmack
I made a working camera projection setup that works for karma in solaris with mtlx shaders.

Thanks so much for the schooling!

This is a very good starting point for the type of solution I was seeking, and I am truly relieved to see that it's possible here in Houdini -- however long it might take me to catch up to where I am able to set it up myself. Indeed, the ease with which I'd have done this in Softimage (R.I.P.) led me to imagine that a similarly user-friendly feature might be available to Houdinies (is that even a word here?). Well, even lacking that, I really appreciate your taking the time to explain.

Warning to others not to try loading jsmack's example into versions earlier than 19.0 :o
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sekow
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tekkonkinkreet
... to Houdinies (is that even a word here?).

I like Houdnicks
http://www.sekowfx.com [www.sekowfx.com]
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mrcbersani
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jsmack
I made a working camera projection setup that works for karma in solaris with mtlx shaders.
Wow jsmack, thankyou...I hope this is automated asap
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mrcbersani
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Hi,
do you think it's possible with arnold in solaris?
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NicTanghe
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Doesn`t seem to work with a moving camera.
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jsmack
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NicTanghe
Doesn`t seem to work with a moving camera.

this method is obsolete now. The state of the art method uses coordsys for proper projection support. It even motion blurs correctly.

Attachments:
projection_animation.mp4 (649.0 KB)
karma_mtlx_camera_projection_coordsys.hip (1.0 MB)

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mrcbersani
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Great @jsmack thankyou,
there's a way to do it with arnold in solaris?
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jsmack
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mrcbersani
Great @jsmack thankyou,
there's a way to do it with arnold in solaris?

I wouldn't know anything about arnold, but the mechanism isn't Karma specific, it's part of the USD spec.
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mrcbersani
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thank you
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