Pixel-Composer/scripts/node_threshold/node_threshold.gml

function Node_Threshold(_x, _y, _group = -1) : Node_Processor(_x, _y, _group) constructor {
	name = "Threshold";
	
	shader = sh_threshold;
	uniform_mde = shader_get_uniform(shader, "mode");
	uniform_thr = shader_get_uniform(shader, "thr");
	uniform_smt = shader_get_uniform(shader, "smooth");
	
	inputs[| 0] = nodeValue("Surface in", self, JUNCTION_CONNECT.input, VALUE_TYPE.surface, 0);
	
	inputs[| 1] = nodeValue("Mode",   self, JUNCTION_CONNECT.input, VALUE_TYPE.integer, 0)
		.setDisplay(VALUE_DISPLAY.enum_button, [ "Brightness", "Alpha" ]);
		
	inputs[| 2] = nodeValue("Threshold",   self, JUNCTION_CONNECT.input, VALUE_TYPE.float, 0.5)
		.setDisplay(VALUE_DISPLAY.slider, [ 0, 1, 0.01]);
		
	inputs[| 3] = nodeValue("Smoothness",   self, JUNCTION_CONNECT.input, VALUE_TYPE.float, 0)
		.setDisplay(VALUE_DISPLAY.slider, [ 0, 1, 0.01]);
	
	inputs[| 4] = nodeValue("Mask", self, JUNCTION_CONNECT.input, VALUE_TYPE.surface, 0);
	
	inputs[| 5] = nodeValue("Mix", self, JUNCTION_CONNECT.input, VALUE_TYPE.float, 1)
		.setDisplay(VALUE_DISPLAY.slider, [0, 1, 0.01]);
	
	inputs[| 6] = nodeValue("Active", self, JUNCTION_CONNECT.input, VALUE_TYPE.boolean, true);
		active_index = 6;
	
	outputs[| 0] = nodeValue("Surface out", self, JUNCTION_CONNECT.output, VALUE_TYPE.surface, noone);
	
	input_display_list = [ 6, 
		["Surface",		 true], 0, 4, 5, 
		["Threshold",	false], 1, 2, 3, 
	];
	
	static process_data = function(_outSurf, _data, _output_index, _array_index) {		
		var _mode = _data[1];
		var _thr  = _data[2];
		var _smt  = _data[3];
		
		surface_set_target(_outSurf);
		draw_clear_alpha(0, 0);
		BLEND_OVERRIDE;
		
		shader_set(shader);
			shader_set_uniform_i(uniform_mde,  _mode);
			shader_set_uniform_f(uniform_thr, _thr);
			shader_set_uniform_f(uniform_smt, _smt);
			
			draw_surface_safe(_data[0], 0, 0);
		shader_reset();
		
		BLEND_NORMAL;
		surface_reset_target();
		
		_outSurf = mask_apply(_data[0], _outSurf, _data[4], _data[5]);
		
		return _outSurf;
	}
}