Pixel-Composer/scripts/node_texture_remap/node_texture_remap.gml

function Node_Texture_Remap(_x, _y, _group = -1) : Node_Processor(_x, _y, _group) constructor {
	name = "Texture remap";
	
	shader = sh_texture_remap;
	uniform_map = shader_get_sampler_index(shader, "map");
	
	inputs[| 0] = nodeValue(0, "Surface in", self, JUNCTION_CONNECT.input, VALUE_TYPE.surface, 0);
	inputs[| 1] = nodeValue(1, "RG Map", self, JUNCTION_CONNECT.input, VALUE_TYPE.surface, 0);
	
	outputs[| 0] = nodeValue(0, "Surface out", self, JUNCTION_CONNECT.output, VALUE_TYPE.surface, PIXEL_SURFACE);
	
	static process_data = function(_outSurf, _data, _output_index) {
		if(!is_surface(_data[1])) return _outSurf;
		
		surface_set_target(_outSurf);
		draw_clear_alpha(0, 0);
		BLEND_OVER
		
		shader_set(shader);
			texture_set_stage(uniform_map, surface_get_texture(_data[1]));
			draw_surface_safe(_data[0], 0, 0);
		shader_reset();
		
		BLEND_NORMAL
		surface_reset_target();
		
		return _outSurf;
	}
}