DecalData
A datablock describing an individual decal.
Decal
float
Width and height of the decal in meters before scale is applied.
int
Time (in milliseconds) before this decal will be automatically deleted.
int
Time (in milliseconds) over which to fade out the decal before deleting it at the end of its lifetime.
Rendering
float
LOD value - size in pixels at which decals of this type begin to fade out.
float
LOD value - size in pixels at which decals of this type are fully faded out.
char
Default renderPriority for decals of this type (determines draw order when decals overlap).
float
The angle in degrees used to clip geometry that faces away from the decal projection direction.
Texturing
int
Index of the texture rectangle within the imagemap to use for this decal.
bool
If true, a random frame from the imagemap is selected for each instance of the decal.
int
Number of individual frames in the imagemap (maximum 16).
int
Number of rows in the supplied imagemap.
int
Number of columns in the supplied imagemap.
RectF
textureCoords [16]
An array of RectFs (topleft.x topleft.y extent.x extent.y) representing the UV coordinates for each frame in the imagemap.
Detailed Description
A datablock describing an individual decal.
The textures defined by the decal Material can be divided into multiple rectangular sub-textures as shown below, with a different sub-texture selected by all decals using the same DecalData (via frame) or each decal instance (via randomize). 
datablock DecalData(BulletHoleDecal) { material = "DECAL_BulletHole"; size = "5.0"; lifeSpan = "50000"; randomize = "1"; texRows = "2"; texCols = "2"; clippingAngle = "60"; };
Decal
float size
Width and height of the decal in meters before scale is applied.
string Material
Material to use for this decal.
int lifeSpan
Time (in milliseconds) before this decal will be automatically deleted.
int fadeTime
Time (in milliseconds) over which to fade out the decal before deleting it at the end of its lifetime.
Rendering
float fadeStartPixelSize
LOD value - size in pixels at which decals of this type begin to fade out.
This should be a larger value than fadeEndPixelSize. However, you may also set this to a negative value to disable lod-based fading.
float fadeEndPixelSize
LOD value - size in pixels at which decals of this type are fully faded out.
This should be a smaller value than fadeStartPixelSize.
char renderPriority
Default renderPriority for decals of this type (determines draw order when decals overlap).
float clippingAngle
The angle in degrees used to clip geometry that faces away from the decal projection direction.
Texturing
int frame
Index of the texture rectangle within the imagemap to use for this decal.
bool randomize
If true, a random frame from the imagemap is selected for each instance of the decal.
int textureCoordCount
Number of individual frames in the imagemap (maximum 16).
int texRows
Number of rows in the supplied imagemap.
Use texRows and texCols if the imagemap frames are arranged in a grid; use textureCoords to manually specify UV coordinates for irregular sized frames.
int texCols
Number of columns in the supplied imagemap.
Use texRows and texCols if the imagemap frames are arranged in a grid; use textureCoords to manually specify UV coordinates for irregular sized frames.
RectF textureCoords [16]
An array of RectFs (topleft.x topleft.y extent.x extent.y) representing the UV coordinates for each frame in the imagemap.
note:This field should only be set if the imagemap frames are irregular in size. Otherwise use the texRows and texCols fields and the UV coordinates will be calculated automatically.