[Piglit] [PATCH] arb_gpu_shader5: Test some more `sample` qualifier cases.

[Chris Forbes]

Mesa has been allowing `sample` (and `centroid`) in a bunch of places
where they are not valid. These tests exercise a few more interesting
cases.

Signed-off-by: Chris Forbes <chrisf at ijw.co.nz>
---
 .../fs-sample-centroid-disallowed.frag             | 25 ++++++++++++++++++++++
 .../fs-sample-in-interface-block.frag              | 19 ++++++++++++++++
 .../fs-sample-in-struct-disallowed.frag            | 20 +++++++++++++++++
 .../fs-sample-in-uniform-block-disallowed.frag     | 20 +++++++++++++++++
 .../fs-sample-temp-disallowed.frag                 | 20 +++++++++++++++++
 .../fs-sample-uniform-disallowed.frag              | 17 +++++++++++++++
 6 files changed, 121 insertions(+)
 create mode 100644 tests/spec/arb_gpu_shader5/compiler/sample-qualifier/fs-sample-centroid-disallowed.frag
 create mode 100644 tests/spec/arb_gpu_shader5/compiler/sample-qualifier/fs-sample-in-interface-block.frag
 create mode 100644 tests/spec/arb_gpu_shader5/compiler/sample-qualifier/fs-sample-in-struct-disallowed.frag
 create mode 100644 tests/spec/arb_gpu_shader5/compiler/sample-qualifier/fs-sample-in-uniform-block-disallowed.frag
 create mode 100644 tests/spec/arb_gpu_shader5/compiler/sample-qualifier/fs-sample-temp-disallowed.frag
 create mode 100644 tests/spec/arb_gpu_shader5/compiler/sample-qualifier/fs-sample-uniform-disallowed.frag

diff --git a/tests/spec/arb_gpu_shader5/compiler/sample-qualifier/fs-sample-centroid-disallowed.frag b/tests/spec/arb_gpu_shader5/compiler/sample-qualifier/fs-sample-centroid-disallowed.frag
new file mode 100644
index 0000000..b1439a6
--- /dev/null
+++ b/tests/spec/arb_gpu_shader5/compiler/sample-qualifier/fs-sample-centroid-disallowed.frag
@@ -0,0 +1,25 @@
+// [config]
+// expect_result: fail
+// glsl_version: 1.50
+// require_extensions: GL_ARB_gpu_shader5
+// [end config]
+
+#version 150
+#extension GL_ARB_gpu_shader5: require
+
+/* At most one aux. storage qualifier is allowed.
+ * Note that strictly speaking, under gpu_shader5 / GLSL 4.00,
+ * the storage qualifier is the entire 'centroid in' or 'sample in',
+ * but we use the wording from shading_language_420pack / GLSL 4.20.
+ *
+ * A strict gpu_shader5 / GLSL 4.00 implementation should reject this
+ * too.
+ */
+sample centroid in vec4 x;
+out vec4 out_color;
+
+void main()
+{
+	out_color = x;
+}
+
diff --git a/tests/spec/arb_gpu_shader5/compiler/sample-qualifier/fs-sample-in-interface-block.frag b/tests/spec/arb_gpu_shader5/compiler/sample-qualifier/fs-sample-in-interface-block.frag
new file mode 100644
index 0000000..8c1d2de
--- /dev/null
+++ b/tests/spec/arb_gpu_shader5/compiler/sample-qualifier/fs-sample-in-interface-block.frag
@@ -0,0 +1,19 @@
+// [config]
+// expect_result: pass
+// glsl_version: 1.50
+// require_extensions: GL_ARB_gpu_shader5
+// [end config]
+
+#version 150
+#extension GL_ARB_gpu_shader5: require
+
+in fragment_inputs {
+	sample vec4 x;
+};
+out vec4 out_color;
+
+void main()
+{
+	out_color = x;
+}
+
diff --git a/tests/spec/arb_gpu_shader5/compiler/sample-qualifier/fs-sample-in-struct-disallowed.frag b/tests/spec/arb_gpu_shader5/compiler/sample-qualifier/fs-sample-in-struct-disallowed.frag
new file mode 100644
index 0000000..0409664
--- /dev/null
+++ b/tests/spec/arb_gpu_shader5/compiler/sample-qualifier/fs-sample-in-struct-disallowed.frag
@@ -0,0 +1,20 @@
+// [config]
+// expect_result: fail
+// glsl_version: 1.50
+// require_extensions: GL_ARB_gpu_shader5
+// [end config]
+
+#version 150
+#extension GL_ARB_gpu_shader5: require
+
+struct things {
+	/* not allowed in struct declarations */
+	sample vec4 x;
+};
+out vec4 out_color;
+
+void main()
+{
+	out_color = vec4(1);
+}
+
diff --git a/tests/spec/arb_gpu_shader5/compiler/sample-qualifier/fs-sample-in-uniform-block-disallowed.frag b/tests/spec/arb_gpu_shader5/compiler/sample-qualifier/fs-sample-in-uniform-block-disallowed.frag
new file mode 100644
index 0000000..b4d9097
--- /dev/null
+++ b/tests/spec/arb_gpu_shader5/compiler/sample-qualifier/fs-sample-in-uniform-block-disallowed.frag
@@ -0,0 +1,20 @@
+// [config]
+// expect_result: fail
+// glsl_version: 1.50
+// require_extensions: GL_ARB_gpu_shader5
+// [end config]
+
+#version 150
+#extension GL_ARB_gpu_shader5: require
+
+uniform things {
+	/* not allowed in uniform block */
+	sample vec4 x;
+};
+out vec4 out_color;
+
+void main()
+{
+	out_color = vec4(1);
+}
+
diff --git a/tests/spec/arb_gpu_shader5/compiler/sample-qualifier/fs-sample-temp-disallowed.frag b/tests/spec/arb_gpu_shader5/compiler/sample-qualifier/fs-sample-temp-disallowed.frag
new file mode 100644
index 0000000..405820c
--- /dev/null
+++ b/tests/spec/arb_gpu_shader5/compiler/sample-qualifier/fs-sample-temp-disallowed.frag
@@ -0,0 +1,20 @@
+// [config]
+// expect_result: fail
+// glsl_version: 1.50
+// require_extensions: GL_ARB_gpu_shader5
+// [end config]
+
+#version 150
+#extension GL_ARB_gpu_shader5: require
+
+out vec4 out_color;
+
+void main()
+{
+	/* x is neither an input nor output, so 'sample' is not
+	 * legal here.
+	 */
+	sample vec4 x = vec4(1);
+	out_color = x;
+}
+
diff --git a/tests/spec/arb_gpu_shader5/compiler/sample-qualifier/fs-sample-uniform-disallowed.frag b/tests/spec/arb_gpu_shader5/compiler/sample-qualifier/fs-sample-uniform-disallowed.frag
new file mode 100644
index 0000000..f168aab
--- /dev/null
+++ b/tests/spec/arb_gpu_shader5/compiler/sample-qualifier/fs-sample-uniform-disallowed.frag
@@ -0,0 +1,17 @@
+// [config]
+// expect_result: fail
+// glsl_version: 1.50
+// require_extensions: GL_ARB_gpu_shader5
+// [end config]
+
+#version 150
+#extension GL_ARB_gpu_shader5: require
+
+sample uniform vec4 x;
+out vec4 out_color;
+
+void main()
+{
+	out_color = x;
+}
+
-- 
1.9.2