gtk/testsuite/reftests/gradient-hard-stop.ui

<?xml version="1.0" encoding="UTF-8"?>
<interface>
  <object class="GtkWindow" id="window1">
    <property name="decorated">0</property>
    <property name="default_width">200</property>
    <property name="default_height">200</property>
    <property name="name">reference</property>
  </object>
</interface>
Add a reftest for gradients with hard stops This is testing the issue described in #1293. No fix though, this is still broken in Vulkan. It works correctly in GL and with cairo. 2020-08-05 12:09:42 +00:00			`<?xml version="1.0" encoding="UTF-8"?>`
			`<interface>`
			`<object class="GtkWindow" id="window1">`
			`<property name="decorated">0</property>`
			`<property name="default_width">200</property>`
			`<property name="default_height">200</property>`
			`<property name="name">reference</property>`
			`</object>`
			`</interface>`