[Piglit] [PATCH] quad-invariance: Fix undefined ReadPixels behavior and make concurrent.

[Eric Anholt]

---
 tests/all.tests                 |    2 +-
 tests/general/quad-invariance.c |    4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/tests/all.tests b/tests/all.tests
index eb32225..53e0451 100644
--- a/tests/all.tests
+++ b/tests/all.tests
@@ -330,7 +330,7 @@ add_single_param_test_set(
     )
 add_plain_test(general, 'provoking-vertex')
 add_plain_test(general, 'oes-read-format')
-add_plain_test(general, 'quad-invariance')
+add_concurrent_test(general, 'quad-invariance')
 add_plain_test(general, 'read-front')
 add_concurrent_test(general, 'readpix-z')
 add_plain_test(general, 'roundmode-getintegerv')
diff --git a/tests/general/quad-invariance.c b/tests/general/quad-invariance.c
index 06b818e..64a88e6 100644
--- a/tests/general/quad-invariance.c
+++ b/tests/general/quad-invariance.c
@@ -102,8 +102,6 @@ piglit_display(void)
 		once = GL_FALSE;
 	}
 
-	glutSwapBuffers();
-
 	for (x = 0; x < piglit_width / 2; x++) {
 		for (y = 0; y < piglit_height; y++) {
 			float probed[4];
@@ -116,6 +114,8 @@ piglit_display(void)
 		}
 	}
 
+	piglit_present_results();
+
 	return pass ? PIGLIT_PASS : PIGLIT_WARN;
 }
 
-- 
1.7.10.4