private static SpvInstruction ApplyScaling2DArray(CodeGenContext context, SpvInstruction vector, int index)
{
// The array index is not scaled, just x and y.
var vectorXY = context.VectorShuffle(context.TypeVector(context.TypeS32(), 2), vector, vector, 0, 1);
var vectorZ = context.CompositeExtract(context.TypeS32(), vector, 2);
var vectorXYScaled = ApplyScaling2D(context, vectorXY, index);
var vectorScaled = context.CompositeConstruct(context.TypeVector(context.TypeS32(), 3), vectorXYScaled, vectorZ);
return(vectorScaled);
}