From ea316b56a0ef1e84c29cd31b45b083bbe0120f83 Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Wed, 25 Jan 2023 15:31:29 -0700
Subject: [PATCH] [cairo] Flip offsets when reversing

Fixes many of the var_colrv1 first row tests.

https://roettsch.es/var_colrv1.html
---
 src/hb-cairo-utils.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/hb-cairo-utils.cc b/src/hb-cairo-utils.cc
index 5e5dadbd4..3466cba79 100644
--- a/src/hb-cairo-utils.cc
+++ b/src/hb-cairo-utils.cc
@@ -598,6 +598,8 @@ _hb_cairo_add_sweep_gradient_patches (hb_color_stop_t *stops,
 
     for (unsigned i = 0; i < n_stops - 1 - i; i++)
       hb_swap (stops[i], stops[n_stops - 1 - i]);
+    for (unsigned i = 0; i < n_stops; i++)
+      stops[i].offset = 1 - stops[i].offset;
   }
 
   if (n_stops > PREALLOCATED_COLOR_STOPS)