Creating Cube Maps

Cube maps are created under Adobe Photoshop as shown below by arranging images for each view direction in a horizontal cross pattern without gaps between images.

 +Y  
-X-Z+X+Z
 -Y  

(The blank parts in each of the four corners are not used.)

Images for each view direction must be equally sized squares with dimensions that are a power of two equal to or greater than 8 and equal to or less than 1024.
The coordinate axes of each view direction image under Photoshop are defined as follows.

View DirectionUpRight
+X+Y+Z
-X+Y-Z
+Y+Z+X
-Y-Z+X
+Z+Y-X
-Z+Y+X

Under CTR the -Y direction is upward, so 180-degree rotated data is output as additional information in TGA and CTEX files for images representing the +X, -X, +Z, and -Z directions.

For images arranged in a horizontal cross, execute the mipmap creation plug-in to create a mipmap image for the cube map.




CONFIDENTIAL