1 files changed, 22 insertions, 0 deletions
diff --git a/tests/spec/arb_fragment_shader_interlock/compiler/endInvocationInterlock-before-beginInvocationInterlock.frag b/tests/spec/arb_fragment_shader_interlock/compiler/endInvocationInterlock-before-beginInvocationInterlock.frag
new file mode 100644
index 000000000..9860050d0
--- /dev/null
+++ b/tests/spec/arb_fragment_shader_interlock/compiler/endInvocationInterlock-before-beginInvocationInterlock.frag
@@ -0,0 +1,22 @@
+// [config]
+// expect_result: fail
+// glsl_version: 4.20
+// require_extensions: GL_ARB_fragment_shader_interlock
+// check_link: true
+// [end config]
+
+/* The GL_ARB_fragment_shader_interlock spec says:
+ *
+ *    A compile- or link-time error will be generated if main() calls either
+ *    function more than once, contains a call to one function without a
+ *    matching call to the other, or calls endInvocationInterlockARB() before
+ *    calling beginInvocationInterlockARB().
+ */
+#version 420
+#extension GL_ARB_fragment_shader_interlock: require
+
+void main()
+{
+	endInvocationInterlockARB();
+	beginInvocationInterlockARB();
+}