global proc gen_unfilteredTextures(){
	
	// list all shaders
	string $materialList[] = `ls -type "shadingEngine"`;

	// this variable will be assigned the value of the shader's
	// material info node
	string $matInfo;
	
	// start cycling through the list
	for ($shader in $materialList){
		
		// start searching for material info node
		string $connections[] = `listConnections $shader`;		
		for ($item in $connections){
			
			if (`objectType $item` == "materialInfo")
				$matInfo = $item;
			
		}
		
		// to avoid any script stopping errors, check if matInfo node exists
		// before acting on it
		if(`objExists $matInfo`)
			setAttr ($matInfo + ".textureFilter") 2;
		
	}
	
	// panel needs to be redrawn to update textures
	refresh;
	
}

// node that attaches script to scene, and will run whenever file loads
scriptNode -st 2 -bs gen_unfilteredTextures;