Fixed texture alpha handling and light position bug in diffuse shader
Fixed texture alpha handling and light position bug in diffuse shader

xml3d/xml3d.js,CCLDESTY/xml3d.js,Fiware/webui.Xml3d.js,Fiware/webui.Xml3d.js,ariyapour/xml3d.js,CCLDESTY/xml3d.js,xml3d/xml3d.js,ariyapour/xml3d.js