Bitmap shader question

[wadeheaton]

I just try the demo version of corona, and I got some question with bitmap shader. when I chose no tiling in the bitmap UV.the texture seems still tiles.when use material flat projection and layered material  to mask a logo on my object. the bitmap shader cant define the color of no UV area. I just wonder if this is a bug or its designed to be like this.

[TomG]

For adding a logo, I would first suggest using the new Decal (depending on the shape of your object, it can be the better choice, getting rid of any worry about UV mapping at all of any sort :) ). Not to negate your question, just to give you what could be an easier and better way to do logos on things anyway!

[Stefan-L]

set tiling and offset  etc in the material tag not in the shader

add decal material to the object, on top of base material,
activate "add",
set to flatmapping,
turn off tile in the material tag,
use scale and offset the place the decal (or c4d textures tools)

the parts outside the decal will be automatic transparent in corona(use a bitmap in the opacity slot, if you want with corona bitmap

works pretty easy