[Intel-gfx] [RFT i-g-t] tests/prime_vgem/basic-fence-flip: Probe display resolution

[Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>]

From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

Some displays might not support hardcoded 1024x768.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=109294
---
 tests/prime_vgem.c | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/tests/prime_vgem.c b/tests/prime_vgem.c
index 60bb951c8cbe..458846add9ee 100644
--- a/tests/prime_vgem.c
+++ b/tests/prime_vgem.c
@@ -744,8 +744,22 @@ static void flip_to_vgem(int i915, int vgem,
 
 static void test_flip(int i915, int vgem, unsigned hang)
 {
-	struct vgem_bo bo[2];
+	drmModeModeInfo *mode = NULL;
 	uint32_t fb_id[2], handle[2], crtc_id;
+	igt_display_t display;
+	igt_output_t *output;
+	struct vgem_bo bo[2];
+	enum pipe pipe;
+
+	igt_display_require(&display, i915);
+	igt_display_require_output(&display);
+
+	for_each_pipe_with_valid_output(&display, pipe, output) {
+		mode = igt_output_get_mode(output);
+		break;
+	}
+
+	igt_assert(mode);
 
 	signal(SIGHUP, sighandler);
 
@@ -754,8 +768,8 @@ static void test_flip(int i915, int vgem, unsigned hang)
 		uint32_t offsets[4] = {};
 		int fd;
 
-		bo[i].width = 1024;
-		bo[i].height = 768;
+		bo[i].width = mode->hdisplay;
+		bo[i].height = mode->vdisplay;
 		bo[i].bpp = 32;
 		vgem_create(vgem, &bo[i]);
 
-- 
2.19.1

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