Test that TCS per-vertex outputs which are used only in
TCS stage are not converted to local variables and indeed
share data within the patch.
v2: Add GL_ARB_shader_atomic_counters to [require] section.
Format shaders.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104297
Signed-off-by: Danylo Piliaiev <danylo.pilia...@globallogic.com>
---
.../tcs-output-unmatched.shader_test | 67 +++++++++++++++++++
1 file changed, 67 insertions(+)
create mode 100644
tests/spec/arb_tessellation_shader/execution/tcs-output-unmatched.shader_test
diff --git
a/tests/spec/arb_tessellation_shader/execution/tcs-output-unmatched.shader_test
b/tests/spec/arb_tessellation_shader/execution/tcs-output-unmatched.shader_test
new file mode 100644
index 000000000..dd3b5ce09
--- /dev/null
+++
b/tests/spec/arb_tessellation_shader/execution/tcs-output-unmatched.shader_test
@@ -0,0 +1,67 @@
+# Test that TCS per-vertex outputs which are used only in
+# TCS stage are not converted to local variables
+# and indeed share data within the patch.
+
+[require]
+GLSL >= 1.50
+GL_ARB_tessellation_shader
+GL_ARB_separate_shader_objects
+GL_ARB_shader_atomic_counters
+
+[vertex shader passthrough]
+
+
+[tessellation control shader]
+#extension GL_ARB_tessellation_shader: require
+#extension GL_ARB_separate_shader_objects: require
+#extension GL_ARB_shader_atomic_counters: require
+layout(vertices = 3) out;
+
+layout(location = 0) out vec4 out_unused_in_tes[];
+
+layout(binding = 0) uniform atomic_uint mismatches;
+
+void main()
+{
+ out_unused_in_tes[gl_InvocationID] = gl_in[gl_InvocationID].gl_Position;
+
+ barrier();
+
+ if (out_unused_in_tes[0] != gl_in[0].gl_Position ||
+ out_unused_in_tes[1] != gl_in[1].gl_Position ||
+ out_unused_in_tes[2] != gl_in[2].gl_Position) {
+ atomicCounterIncrement(mismatches);
+ }
+}
+
+
+[tessellation evaluation shader]
+#extension GL_ARB_tessellation_shader: require
+layout(triangles) in;
+
+void main()
+{
+ gl_Position = vec4(0);
+}
+
+
+[fragment shader]
+
+void main()
+{
+ gl_FragColor = vec4(1.0);
+}
+
+[vertex data]
+piglit_vertex/float/4
+1 1 1 1
+2 2 2 2
+3 3 3 3
+
+[test]
+atomic counters 1
+
+patch parameter vertices 3
+draw arrays GL_PATCHES 0 3
+
+probe atomic counter 0 == 0
--
2.20.1
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