move precision qualifier into rest of shader source construction
move precision qualifier into rest of shader source construction

taylorhxu/tangram,ceseale/tangram,ceseale/tangram,ceseale/tangram,xvilan/tangram,zerebubuth/tangram,xvilan/tangram,rosamcgee/tangram,TitoAgudelo/tangram,taylorhxu/tangram,taylorhxu/tangram,zerebubuth/tangram,TitoAgudelo/tangram,tangrams/tangram,tangrams/tangram,TitoAgudelo/tangram,rosamcgee/tangram,rosamcgee/tangram,zerebubuth/tangram,xvilan/tangram