[GEN/ZH] Silverbirds or how to do reflective surfaces

[Flyby]

After reading a request on how to make reflective surfaces, I decided to share some of the alchemy to turn bitmaps into quicksilver ;)

A test sample of what you can achieve:
http://www.deezire.net/tutorials/images/silverbird.jpg

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Now the way to do it :
a reflective surface is in fact a composite of 2 bitmaps. One with what you could call a "normal" texture and one that will serve as reflection.
You need to adjust the texture settings on 3 levels:
-Vertex Material
-Shader
-Textures

You start in the textures tab, by assigning your regular texture bitmap to the "stage 0 texture". For stage 1 you need a nice looking sky or environment bitmap. While still on stage1 set the pass hint to "environment map".

Then jump to Vertex Material and choose "WS environment" for stage 1 Mapping. It is by far the best looking.

Get to the Shader tab now and set the advanced option like in the picture.


STEP 1
http://www.deezire.net/tutorials/images/Textures.jpg

STEP2
http://www.deezire.net/tutorials/images/Vertexmaterials.jpg

STEP3
http://www.deezire.net/tutorials/images/Shaders.jpg