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Dark GDK / Projective Texture Mapping

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tparkin
17
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Joined: 28th Mar 2007
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Posted: 11th Dec 2007 07:29
Does anyone have an example of projective texture mapping in DarkGDK?

Thanks in advance.
aersixb9
16
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Joined: 29th Nov 2007
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Posted: 11th Dec 2007 08:17
What is projective texture mapping?
Jeff032
17
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Joined: 13th Aug 2007
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Posted: 11th Dec 2007 13:21
jason p sage
17
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Joined: 10th Jun 2007
Location: Ellington, CT USA
Posted: 11th Dec 2007 17:58
Wow - (I saw this earlier and didn't know what it was either).

All I can say - is that it seems like it would involve a shader draped in front of/On the object(s) getting rendered on and someway to modulate the shader based on the projected light - (stomach pain) - way to much effort ....

Another way I thought would be some sort of ray casting - like sparky's - and either figuring out the position in the texture that is on the object and doing color math somehow - (blah - uv info(texture position etc - scale - yuck + object coords - stomach pain)

I'd make a work around. Like a ghosted object textured with the image or some such non-sense.

Rendering shadows is hard enough - a projector? OUCH!

I understand WHAT projection texturing is - and now that I do - I'll avoid it like the plauge!

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