Pixel-Composer/scripts/node_feedback/node_feedback.gml

function Node_Feedback(_x, _y, _group = noone) : Node_Collection(_x, _y, _group) constructor {
	name  = "Feedback";
	color = COLORS.node_blend_feedback;
	icon  = THEME.feedback;
	
	if(!LOADING && !APPENDING && !CLONING) {
		var input  = nodeBuild("Node_Feedback_Input", -256, -32, self);
		var output = nodeBuild("Node_Feedback_Output", 256, -32, self);
		
		input.inputs[| 2].setValue(4);
		output.inputs[| 0].setFrom(input.outputs[| 0]);
		output.inputs[| 2].setFrom(input.outputs[| 1]);
	}
	
	static doStepBegin = function() {
		if(!ANIMATOR.frame_progress) return;
		setRenderStatus(false);
		UPDATE |= RENDER_TYPE.full; //force full render
	}
	
	static getNextNodes = function() {
		var allReady = true;
		for(var i = custom_input_index; i < ds_list_size(inputs); i++) {
			var _in = inputs[| i].from;
			if(!_in.renderActive) continue;
			
			allReady &= _in.isRenderable()
		}
			
		if(!allReady) return;
		
		__nodeLeafList(getNodeList(), RENDER_QUEUE);
	}
	
	PATCH_STATIC
}