I have a floor that reflects using the code from Lesson 27. Is there a way to make the reflection "dirty" ? It just looks too perfect. Is there a way to make it blurry or something ? Nitzan ------------------------- www.geocities.com/nitzanw www.scorchedearth3d.net -------------------------

just a random idea (i haven''t tried this myself)... you could try looking into "gloss maps", which are like an image that you pair with a texture that specifies how shiny the texture is at each texel...

although these are generally being used for per-pixel lighting, you could apply them differently to have "imperfect" reflections.

Reflection mapping. Will modulate the amount of reflection of a surface based on a map. Create a noise reflection map, and your reflections will look dirty.

- AH

Just render the reflective surface with an alpha channel, instead of a single alpha value.

If you''ve played Super Smash Melee for Nintendo GameCube, the arena "Fountain of Dreams" has some very nice blurred reflections, and I was wondering about how it was done. It looked like they had rendered the objects to be reflected on an off-screen buffer, resized it to be say, 16 times smaller, and made a linear-filtered texture, so that the lower-resolution texture made it blurred. (And all in real-time, too!) I don''t know if that''s even possible in OpenGL, or at least extremely slow. Anyways, just some food for thought.

in Super Monkey ball in the party game Monkey Target they have awesome blurred reflection in the water. I know the GameCube uses an API similiar to OpenGL, so its probably possible.

Nitzan

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www.geocities.com/nitzanw
www.scorchedearth3d.net
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Of course it''s possible, in fact, it''s very simple. Just render your reflected scene to a texture, choose a texture resolution that suits your needs (1024*1024 for almost pixel perfect reflections, 32*32 for *very* blurred ones). Now render the normal scene with the reflection texture applied to your surface. That''s it.

- AH

if you realy want to go cheap and "dirty" (pardon the pun) just use multitextureing and put a not so blended texture over the reflection (insta dirt if you put brown in the texture)

A man walks into a bar.....ouch!?! Ya get it, do ya huh huh well....awww I give up.