[Piglit] [PATCH 1/2] arb_compute_shader: Support ID tests with work group sizes of 0

[Jordan Justen]

The ARB_compute_shader spec says:

  "If the work group count in any dimension is zero, no work groups
   are dispatched."

Signed-off-by: Jordan Justen <jordan.l.justen at intel.com>
---
 tests/spec/arb_compute_shader/cs-ids-common.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tests/spec/arb_compute_shader/cs-ids-common.c b/tests/spec/arb_compute_shader/cs-ids-common.c
index 9676c82..e5987d3 100644
--- a/tests/spec/arb_compute_shader/cs-ids-common.c
+++ b/tests/spec/arb_compute_shader/cs-ids-common.c
@@ -135,7 +135,8 @@ confirm_size()
 
 	memset(&values, 0, sizeof values);
 
-	for (z = 0; z < zs; z++) {
+	const bool no_work = global_x == 0 || global_y == 0 || global_z == 0;
+	for (z = 0; z < zs && !no_work; z++) {
 		for (y = 0; y < ys; y++) {
 			for (x = 0; x < xs; x++) {
 				if (((x & y) & z) == 0u)
@@ -280,8 +281,7 @@ cs_ids_run_test()
 		       local_x, local_y, local_z,
 		       global_x, global_y, global_z);
 
-	if (local_x == 0 || local_y == 0 || local_z == 0 ||
-	    global_x == 0 || global_y == 0 || global_z == 0)
+	if (local_x == 0 || local_y == 0 || local_z == 0)
 		return PIGLIT_FAIL;
 
 	glBindBufferBase(GL_ATOMIC_COUNTER_BUFFER, 0, atomics_bo);
-- 
2.7.0