[Piglit] [PATCH] arb_compute_variable_group_size: ensure local size works with fixed

[Ilia Mirkin]

The new gl_LocalGroupSizeARB variable is meant to work with fixed sizes
as well. Test it.

Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
---
 .../execution/fixed-local-size.shader_test         | 32 ++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 tests/spec/arb_compute_variable_group_size/execution/fixed-local-size.shader_test

diff --git a/tests/spec/arb_compute_variable_group_size/execution/fixed-local-size.shader_test b/tests/spec/arb_compute_variable_group_size/execution/fixed-local-size.shader_test
new file mode 100644
index 000000000..6d92aeaad
--- /dev/null
+++ b/tests/spec/arb_compute_variable_group_size/execution/fixed-local-size.shader_test
@@ -0,0 +1,32 @@
+# Simple test that verifies gl_LocalGroupSizeARB values are
+# functioning. Atomic counters are used as outputs.
+
+[require]
+GL >= 3.3
+GLSL >= 3.30
+GL_ARB_compute_variable_group_size
+GL_ARB_shader_atomic_counters
+
+[compute shader]
+#version 330
+#extension GL_ARB_compute_shader: enable
+#extension GL_ARB_compute_variable_group_size: enable
+#extension GL_ARB_shader_atomic_counters: require
+
+layout(binding = 0) uniform atomic_uint a;
+
+layout(local_size_x = 8, local_size_y = 4, local_size_z = 2) in;
+
+void main()
+{
+	if (gl_LocalGroupSizeARB.x == 8u &&
+	    gl_LocalGroupSizeARB.y == 4u &&
+	    gl_LocalGroupSizeARB.z == 2u)
+	atomicCounterIncrement(a);
+}
+
+[test]
+atomic counters 1
+
+compute 1 1 1
+probe atomic counter 0 == 64
-- 
2.13.6