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@@ -0,0 +1,60 @@
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+package hrt.shgraph.nodes;
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+
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+import hxsl.Types.Vec;
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+import hxsl.*;
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+
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+using hxsl.Ast;
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+
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+@name("Combine Alpha")
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+@description("Create a vector of size 4 from a RGB and an Alpha float")
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+@group("Channel")
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+class CombineAlpha extends ShaderNode {
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+
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+ @input("RGB") var rgb = SType.Vec3;
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+ @input("A", true) var a = SType.Float;
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+
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+ @output("RGBA") var output = SType.Vec4;
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+
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+ override public function computeOutputs() {
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+
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+ addOutput("output", TVec(4, VFloat));
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+ }
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+
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+ override public function build(key : String) : TExpr {
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+
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+ var args = [];
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+ var valueArgs = [];
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+ var opTGlobal : TGlobal = Vec4;
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+ args.push({ name: "rgb", type : TVec(3, VFloat) });
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+ valueArgs.push(rgb.getVar());
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+ args.push({ name: "a", type : TFloat });
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+ valueArgs.push(a.getVar());
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+ opTGlobal = Vec4;
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+
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+ return {
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+ p : null,
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+ t : output.type,
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+ e : TBinop(OpAssign, {
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+ e: TVar(output),
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+ p: null,
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+ t : output.type
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+ },
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+ {
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+ e: TCall({
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+ e: TGlobal(opTGlobal),
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+ p: null,
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+ t: TFun([
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+ {
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+ ret: output.type,
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+ args: args
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+ }
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+ ])
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+ }, valueArgs
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+ ),
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+ p: null,
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+ t: output.type
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+ })
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+ };
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+ }
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+
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+}
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Jed