Pixel-Composer/scripts/node_flip/node_flip.gml

function Node_Flip(_x, _y, _group = noone) : Node_Processor(_x, _y, _group) constructor {
	name = "Flip";
	
	inputs[| 0] = nodeValue("Surface in", self, JUNCTION_CONNECT.input, VALUE_TYPE.surface, noone);
	
	inputs[| 1] = nodeValue("Axis", self, JUNCTION_CONNECT.input, VALUE_TYPE.integer, 0)
		.setDisplay(VALUE_DISPLAY.enum_button, [ "x", "y" ]);
	
	inputs[| 2] = nodeValue("Active", self, JUNCTION_CONNECT.input, VALUE_TYPE.boolean, true);
		active_index = 2;
		
	input_display_list = [ 2, 
		["Surfaces", true],	0, 
		["Flip",	false],	1,
	]
	
	outputs[| 0] = nodeValue("Surface out", self, JUNCTION_CONNECT.output, VALUE_TYPE.surface, noone);
	
	attribute_surface_depth();
	
	static processData = function(_outSurf, _data, _output_index, _array_index) {
		var _axis = _data[1];
		
		surface_set_shader(_outSurf, sh_flip);
			shader_set_i("axis", _axis);
			
			draw_surface_safe(_data[0]);
		surface_reset_shader();
		
		return _outSurf;
	}
}