Category: Shaders
Syntax:
b2dSetShaderFloat4:Void(shader:Int, name:String, x:Double, y:Double, z:Double, w:Double)
Void
Sets four floating-point parameters at once - an RGBA colour or a rectangle, say.
Takes shader, name (the slot number of the FIRST value, as a string) and x, y, z, w.
Returns nothing.
The values fill CONSECUTIVE slots - naming slot "4" writes slots 4 through 7. name is a parameter SLOT NUMBER given as a string - "0" through "63". It is read with the equivalent of atoi(), so a descriptive name such as "intensity" is not looked up: it parses as 0 and lands in slot 0. In the shader the slots are params[0..63], also available as param0 through param63.
View detailed documentation online
b2dSetShaderFloat4(crt, "12", 1.0, 1.0, 1.0, 0.8) ; params[12..15]
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