From: Benjamin Otte <otte@redhat.com>
Date: Mon, 3 Jul 2023 18:51:51 +0000 (+0200)
Subject: testsuite: Add a test for mask out of bounds effects
X-Git-Tag: archive/raspbian/4.12.3+ds-1+rpi1~1^2^2^2~22^2~1^2~77^2
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=c179013790ff0b62533547272e2881246e5df8e4;p=gtk4.git

testsuite: Add a test for mask out of bounds effects

Inverted alpha masks have an effect on the source, even if the mask
doesn't cover the source at all - or worse, is completely clipped out.

The GL renderer handles this fine, but Cairo and Vulkan had
optimizations that got this wrong.
---

diff --git a/testsuite/gsk/compare/mask-clipped-inverted-alpha.node b/testsuite/gsk/compare/mask-clipped-inverted-alpha.node
new file mode 100644
index 0000000000..c72328abe7
--- /dev/null
+++ b/testsuite/gsk/compare/mask-clipped-inverted-alpha.node
@@ -0,0 +1,14 @@
+clip {
+  clip: 0 0 40 40;
+  child: mask {
+    mode: inverted-alpha;
+    source: color {
+      bounds: 0 0 100 100;
+      color: rebeccapurple;
+    }
+    mask: color {
+      bounds: 40 40 60 60;
+      color: black;
+    }
+  }
+}
diff --git a/testsuite/gsk/compare/mask-clipped-inverted-alpha.png b/testsuite/gsk/compare/mask-clipped-inverted-alpha.png
new file mode 100644
index 0000000000..2987324675
Binary files /dev/null and b/testsuite/gsk/compare/mask-clipped-inverted-alpha.png differ
diff --git a/testsuite/gsk/meson.build b/testsuite/gsk/meson.build
index 9317e3a3e1..e48e9a3a45 100644
--- a/testsuite/gsk/meson.build
+++ b/testsuite/gsk/meson.build
@@ -65,6 +65,7 @@ compare_render_tests = [
   'invalid-transform',
   'issue-3615',
   'mask',
+  'mask-clipped-inverted-alpha',
   'mask-modes',
   'mask-modes-with-alpha',
   'nested-rounded-clips',