testsuite: Add a test for stripes

The GL renderer was creating sripes for nodes that were scaled in
particular ways, probably due to rounding errors.

This testsuite focuses on one of those stripes to make sure they are
gone.

3 files changed, 9 insertions, 0 deletions

diff --git a/testsuite/gsk/compare/texture-scale-stripes.node b/testsuite/gsk/compare/texture-scale-stripes.node
new file mode 100644
index 0000000000..acd72b2e44
--- /dev/null
+++ b/testsuite/gsk/compare/texture-scale-stripes.node
@@ -0,0 +1,8 @@
+clip {
+  clip: 3950 3950 100 100;
+  child: texture-scale {
+    bounds: 0 0 19991 19991;
+    filter: nearest;
+    texture: url('data:,<svg><rect width="10" height="10" style="fill:red" /></svg>');
+  }
+}
\ No newline at end of file
diff --git a/testsuite/gsk/compare/texture-scale-stripes.png b/testsuite/gsk/compare/texture-scale-stripes.png
new file mode 100644
index 0000000000..e46858c416
--- /dev/null
+++ b/testsuite/gsk/compare/texture-scale-stripes.png
diff --git a/testsuite/gsk/meson.build b/testsuite/gsk/meson.build
index ce007e667b..f52a77025e 100644
--- a/testsuite/gsk/meson.build
+++ b/testsuite/gsk/meson.build
@@ -77,6 +77,7 @@ compare_render_tests = [
   'scaled-texture',
   'shadow-in-opacity',
   'texture-scale-magnify-10000x',
+  'texture-scale-stripes',
   'texture-url',
   'transform-in-transform',
   'transform-in-transform-in-transform',