Scale parcoords line width with plotGlPixelRatio

Author: jonmmease

src/traces/parcoords/lines.js

@@ -241,6 +241,7 @@ module.exports = function(canvasGL, d) {
     var isPick = d.pick;
 
     var regl = d.regl;
+    var plotGlPixelRatio = d.viewModel.plotGlPixelRatio;
 
     var renderState = {
         currentRafs: {},
@@ -317,7 +318,7 @@ module.exports = function(canvasGL, d) {
         frag: fragmentShaderSource,
 
         primitive: 'lines',
-        lineWidth: 1,
+        lineWidth: plotGlPixelRatio,
         attributes: attributes,
         uniforms: {
             resolution: regl.prop('resolution'),

src/traces/parcoords/parcoords.js

@@ -453,6 +453,7 @@ module.exports = function parcoords(gd, cdModule, layout, callbacks) {
         .each(function(d) {
             // FIXME: figure out how to handle multiple instances
             d.viewModel = vm[0];
+            d.viewModel.plotGlPixelRatio = plotGlPixelRatio;
             d.model = d.viewModel ? d.viewModel.model : null;
         });