add : Factor -> Factor -> WebGL.Settings.Setting
Add the color of the current Renderable
(the source color)
with whatever is behind it (the destination color). For example,
here is the “default” blender:
add one zero
The resulting color will be (src * 1) + (dest * 0)
, which means
we do not use the destination color at all!
You can get a feel for all the different blending factors
here.
subtract : Factor -> Factor -> WebGL.Settings.Setting
Similar to add
, but it does (src * factor1) - (dest * factor2)
.
For example:
subtract one one
This would do (src * 1) - (dest * 1)
so you would take away colors
based on the background.
reverseSubtract : Factor -> Factor -> WebGL.Settings.Setting
Similar to add
, but it does (dest * factor2) - (src * factor1)
.
This one is weird.
zero : Factor
one : Factor
srcColor : Factor
oneMinusSrcColor : Factor
dstColor : Factor
oneMinusDstColor : Factor
srcAlpha : Factor
oneMinusSrcAlpha : Factor
dstAlpha : Factor
oneMinusDstAlpha : Factor
srcAlphaSaturate : Factor
custom : { r : Basics.Float, g : Basics.Float, b : Basics.Float, a : Basics.Float, color : Blender, alpha : Blender } -> WebGL.Settings.Setting
It is possible to do some very fancy blending with
custom
. For example, you can blend the color value and
the alpha values separately:
myBlender : Float -> Setting
myBlender alpha =
custom
{ r = 0
, g = 0
, b = 0
, a = alpha
, color = customAdd one zero
, alpha = customAdd one constantAlpha
}
A Blender
mixes the color of the current Entity
(the source color)
with whatever is behind it (the destination color).
You can get a feel for all the options here.
customAdd : Factor -> Factor -> Blender
customSubtract : Factor -> Factor -> Blender
customReverseSubtract : Factor -> Factor -> Blender
constantColor : Factor
This uses the constant r
, g
, b
, and a
values
given to custom
. If you use this Factor
with
add
, the constant color will default to black.
Because of
restriction in WebGL,
you cannot create a Blender
, that has one factor set to
constantColor
or oneMinusConstantColor
and another set to
constantAlpha
or oneMinusConstantAlpha
.
oneMinusConstantColor : Factor
constantAlpha : Factor
oneMinusConstantAlpha : Factor