[Piglit] [PATCH] arb_fcc: Add another test for a gl_FragCoord redeclaration edge case

[Chris Forbes]

Signed-off-by: Chris Forbes <chrisf at ijw.co.nz>
---
 .../compiler/redeclaration-around-use.frag         | 31 ++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 tests/spec/arb_fragment_coord_conventions/compiler/redeclaration-around-use.frag

diff --git a/tests/spec/arb_fragment_coord_conventions/compiler/redeclaration-around-use.frag b/tests/spec/arb_fragment_coord_conventions/compiler/redeclaration-around-use.frag
new file mode 100644
index 0000000..50dc20f
--- /dev/null
+++ b/tests/spec/arb_fragment_coord_conventions/compiler/redeclaration-around-use.frag
@@ -0,0 +1,31 @@
+/* [config]
+ * expect_result: pass
+ * glsl_version: 1.10
+ * require_extensions: GL_ARB_fragment_coord_conventions
+ * check_link: false
+ * [end config]
+ */
+
+/*
+ * Section 4.3.x.1 (Input Layout Qualifiers) of the
+ * ARB_fragment_coord_conventions spec says:
+ *
+ *     "Within any shader, the first redeclarations of gl_FragCoord must appear
+ *     before any use of gl_FragCoord."
+ */
+
+#version 110
+
+#extension GL_ARB_fragment_coord_conventions : require
+
+in vec4 gl_FragCoord; //first redeclaration: before use.
+
+vec2 a = gl_FragCoord.xy;
+
+in vec4 gl_FragCoord; //this redeclaration is ok, because it does not
+                      //conflict, and the first redeclaration is before use.
+
+void main()
+{
+	gl_FragColor = gl_FragCoord.xyzz;
+}
-- 
1.9.2