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-rw-r--r--lib/igt_fb.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/igt_fb.c b/lib/igt_fb.c
index b4d35482..f3609680 100644
--- a/lib/igt_fb.c
+++ b/lib/igt_fb.c
@@ -1911,7 +1911,7 @@ static void *igt_fb_create_cairo_shadow_buffer(int fd,
drm_format, LOCAL_DRM_FORMAT_MOD_NONE,
IGT_COLOR_YCBCR_BT709, IGT_COLOR_YCBCR_LIMITED_RANGE);
- shadow->strides[0] = ALIGN(width * shadow->plane_bpp[0], 16);
+ shadow->strides[0] = ALIGN(width * (shadow->plane_bpp[0] / 8), 16);
shadow->size = ALIGN(shadow->strides[0] * height,
sysconf(_SC_PAGESIZE));
ptr = mmap(NULL, shadow->size, PROT_READ | PROT_WRITE,