[igt-dev] [i-g-t] tests/kms_plane_alpha_blend: Align width to 256B

[Tejas Upadhyay]

some display resolutions like 1366x768 6bpc which does not
have 64B aligned width are creating crc mismatch in
kms_plane_alpha_blend test on Intel platforms.

Also having different alignment requirement by different drivers,
256B aligned width should work for all drm drivers.

amdgpu and radeon, amdgpu_align_pitch: 256B
armada, armada_pitch: 128B
exynos_drm_gem_dumb_create: No alignment required
drm_gem_shmem_dumb_create: 8B
drm_gem_vram_fill_create_dumb: 8B

Thus 256B covers everything we see in the kernel drm drivers.
Signed-off-by: Tejas Upadhyay <tejaskumarx.surendrakumar.upadhyay at intel.com>
---
 tests/kms_plane_alpha_blend.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tests/kms_plane_alpha_blend.c b/tests/kms_plane_alpha_blend.c
index d649a09f..864e83f9 100644
--- a/tests/kms_plane_alpha_blend.c
+++ b/tests/kms_plane_alpha_blend.c
@@ -168,6 +168,7 @@ static void prepare_crtc(data_t *data, igt_output_t *output, enum pipe pipe)
 	w = mode->hdisplay;
 	h = mode->vdisplay;
 
+	w = ALIGN(w, 256);
 	/* recreate all fbs if incompatible */
 	if (data->xrgb_fb.width != w || data->xrgb_fb.height != h) {
 		cairo_t *cr;
-- 
2.31.1