How to use Alpha or Opacity maps in 3ds max(1).pdf

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How to use Alpha or Opacity maps in 3ds max

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How to use Opacity Maps in 3ds max?

TUTORIALS

In this tutorial, I am going to show how to use Alpha or Opacity maps within 3ds max.

Alpha or opacity maps are frequently used in games. Game engines can’t handle too

much polygons so let’s say if we have to create a tree for some real time stuff then

instead of creating each and every leaf, we will use a leaf diffuse with it’s alpha map.

Working of Alpha or Opacity maps

Here is a simple image showing the effects of two types of Alpha images and their results

http://makeitcg.com/using-opacity-maps-in-3ds-max/476/[2014-12-13 16:13:08]

How to use Alpha or Opacity maps in 3ds max

So, the above case clears that we should use those images in which Black should be

100% black and White should be 100% White, we can’t use gray shaded images (the “in-

betweens” colors of Black and White) as our Alpha or Opacity maps.

To demonstrate how the Alpha maps work, I am using a seamless chain link fence texture

(Learn more about tileable / seamless textures :

Method 1, Method 2).

In order to use this

texture in 3ds max we should have it’s alpha image so let’s start with creating the alpha

or opacity map of our chain link fence texture.

Step1

http://makeitcg.com/using-opacity-maps-in-3ds-max/476/[2014-12-13 16:13:08]

How to use Alpha or Opacity maps in 3ds max

We have to select our chain link first so,

Ctrl + click

on the chain link layer’s thumbnail to

select the image. Our image has no background so it will select the image pixels only

while the transparent pixels remain unselected.

Step2

http://makeitcg.com/using-opacity-maps-in-3ds-max/476/[2014-12-13 16:13:08]

How to use Alpha or Opacity maps in 3ds max

Now, create a new layer and name it as

Alpha

Opacity map.

Now with the Alpha layer

selected, fill your selection with White color.

Step 3

http://makeitcg.com/using-opacity-maps-in-3ds-max/476/[2014-12-13 16:13:08]

How to use Alpha or Opacity maps in 3ds max

Now, inverse the selection by pressing

Ctrl + Shift + I

on your keyboard and fill it with

Black color. Save your texture as

chain_link_diffuse

and the alpha as

chain_link_alpha.

I am using

PSD

file format for my files but you can also use other

image file formats like

JPEG

TGA.

Step 4

http://makeitcg.com/using-opacity-maps-in-3ds-max/476/[2014-12-13 16:13:08]

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