glsl-1.10: Verify that gl_TexCoord cannot be redeclared to change qualifier or type

glslangValidator rejects all of the shaders that try to change the
qualifier with errors like:

    ERROR: 0:8: 'redeclaration' : cannot change qualification of gl_TexCoord

Mesa currently allows all of them to compile.  Closed-source drivers
have not been tested.

glslangValidator rejects the shaders that try to change the type with:

    ERROR: 0:8: 'gl_TexCoord' : redeclaration of array with a different element type

Mesa currently rejects these with a somewhat less helpful error message.
Closed-source drivers have not been tested.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Cc: Andrii Simiklit <andrii.simiklit@globallogic.com>

8 files changed, 104 insertions, 0 deletions

diff --git a/tests/spec/glsl-1.10/compiler/redeclarations/gl_TexCoord-as-global.frag b/tests/spec/glsl-1.10/compiler/redeclarations/gl_TexCoord-as-global.frag
new file mode 100644
index 000000000..e2480444e
--- /dev/null
+++ b/tests/spec/glsl-1.10/compiler/redeclarations/gl_TexCoord-as-global.frag
@@ -0,0 +1,13 @@
+/* [config]
+ * expect_result: fail
+ * glsl_version: 1.10
+ * [end config]
+ */
+#version 110
+
+vec4 gl_TexCoord[2];
+
+void main()
+{
+    gl_FragColor = vec4(0);
+}
diff --git a/tests/spec/glsl-1.10/compiler/redeclarations/gl_TexCoord-as-global.vert b/tests/spec/glsl-1.10/compiler/redeclarations/gl_TexCoord-as-global.vert
new file mode 100644
index 000000000..510073343
--- /dev/null
+++ b/tests/spec/glsl-1.10/compiler/redeclarations/gl_TexCoord-as-global.vert
@@ -0,0 +1,13 @@
+/* [config]
+ * expect_result: fail
+ * glsl_version: 1.10
+ * [end config]
+ */
+#version 110
+
+vec4 gl_TexCoord[2];
+
+void main()
+{
+    gl_Position = gl_Vertex;
+}
diff --git a/tests/spec/glsl-1.10/compiler/redeclarations/gl_TexCoord-as-uniform.frag b/tests/spec/glsl-1.10/compiler/redeclarations/gl_TexCoord-as-uniform.frag
new file mode 100644
index 000000000..21e33bb06
--- /dev/null
+++ b/tests/spec/glsl-1.10/compiler/redeclarations/gl_TexCoord-as-uniform.frag
@@ -0,0 +1,13 @@
+/* [config]
+ * expect_result: fail
+ * glsl_version: 1.10
+ * [end config]
+ */
+#version 110
+
+uniform vec4 gl_TexCoord[2];
+
+void main()
+{
+    gl_FragColor = vec4(0);
+}
diff --git a/tests/spec/glsl-1.10/compiler/redeclarations/gl_TexCoord-as-uniform.vert b/tests/spec/glsl-1.10/compiler/redeclarations/gl_TexCoord-as-uniform.vert
new file mode 100644
index 000000000..db734efed
--- /dev/null
+++ b/tests/spec/glsl-1.10/compiler/redeclarations/gl_TexCoord-as-uniform.vert
@@ -0,0 +1,13 @@
+/* [config]
+ * expect_result: fail
+ * glsl_version: 1.10
+ * [end config]
+ */
+#version 110
+
+uniform vec4 gl_TexCoord[2];
+
+void main()
+{
+    gl_Position = gl_Vertex;
+}
diff --git a/tests/spec/glsl-1.10/compiler/redeclarations/gl_TexCoord-as-varying-vec3.frag b/tests/spec/glsl-1.10/compiler/redeclarations/gl_TexCoord-as-varying-vec3.frag
new file mode 100644
index 000000000..4c8d603db
--- /dev/null
+++ b/tests/spec/glsl-1.10/compiler/redeclarations/gl_TexCoord-as-varying-vec3.frag
@@ -0,0 +1,13 @@
+/* [config]
+ * expect_result: fail
+ * glsl_version: 1.10
+ * [end config]
+ */
+#version 110
+
+varying vec3 gl_TexCoord[2];
+
+void main()
+{
+    gl_FragColor = vec4(0);
+}
diff --git a/tests/spec/glsl-1.10/compiler/redeclarations/gl_TexCoord-as-varying-vec3.vert b/tests/spec/glsl-1.10/compiler/redeclarations/gl_TexCoord-as-varying-vec3.vert
new file mode 100644
index 000000000..537a0be93
--- /dev/null
+++ b/tests/spec/glsl-1.10/compiler/redeclarations/gl_TexCoord-as-varying-vec3.vert
@@ -0,0 +1,13 @@
+/* [config]
+ * expect_result: fail
+ * glsl_version: 1.10
+ * [end config]
+ */
+#version 110
+
+varying vec3 gl_TexCoord[2];
+
+void main()
+{
+    gl_Position = gl_Vertex;
+}
diff --git a/tests/spec/glsl-1.10/compiler/redeclarations/gl_TexCoord-as-varying.frag b/tests/spec/glsl-1.10/compiler/redeclarations/gl_TexCoord-as-varying.frag
new file mode 100644
index 000000000..c40aad933
--- /dev/null
+++ b/tests/spec/glsl-1.10/compiler/redeclarations/gl_TexCoord-as-varying.frag
@@ -0,0 +1,13 @@
+/* [config]
+ * expect_result: pass
+ * glsl_version: 1.10
+ * [end config]
+ */
+#version 110
+
+varying vec4 gl_TexCoord[2];
+
+void main()
+{
+    gl_FragColor = vec4(0);
+}
diff --git a/tests/spec/glsl-1.10/compiler/redeclarations/gl_TexCoord-as-varying.vert b/tests/spec/glsl-1.10/compiler/redeclarations/gl_TexCoord-as-varying.vert
new file mode 100644
index 000000000..25950b3be
--- /dev/null
+++ b/tests/spec/glsl-1.10/compiler/redeclarations/gl_TexCoord-as-varying.vert
@@ -0,0 +1,13 @@
+/* [config]
+ * expect_result: pass
+ * glsl_version: 1.10
+ * [end config]
+ */
+#version 110
+
+varying vec4 gl_TexCoord[2];
+
+void main()
+{
+    gl_Position = gl_Vertex;
+}