We want to make sure that both tiled and untiled buffers have the same
size for the same width/height/format. This will allow better control
over the failure paths exercised by our tests: when we try to flip
from tiled to untiled, we'll be sure that we won't execute the error
path that checks for buffer sizes.
v2: Use the new igt_calc_fb_size() instead of implementing our own
size calculation (Daniel).
v3: We can now use igt_drm_format_to_bpp() (Daniel).
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
---
tests/kms_frontbuffer_tracking.c | 19 ++++++++++++++++++-
1 file changed, 18 insertions(+), 1 deletion(-)
diff --git a/tests/kms_frontbuffer_tracking.c b/tests/kms_frontbuffer_tracking.c
index c819019..64f880c 100644
--- a/tests/kms_frontbuffer_tracking.c
+++ b/tests/kms_frontbuffer_tracking.c
@@ -483,6 +483,9 @@ static void create_fb(enum pixel_format pformat, int width, int height,
uint64_t tiling, int plane, struct igt_fb *fb)
{
uint32_t format;
+ unsigned int size, stride;
+ int bpp;
+ uint64_t tiling_for_size;
switch (pformat) {
case FORMAT_RGB888:
@@ -512,7 +515,21 @@ static void create_fb(enum pixel_format pformat, int width, int height,
igt_assert(false);
}
- igt_create_fb(drm.fd, width, height, format, tiling, fb);
+ /* We want all frontbuffers with the same width/height/format to have
+ * the same size regardless of tiling since we want to properly exercise
+ * the Kernel's specific tiling-checking code paths without accidentally
+ * hitting size-checking ones first. */
+ bpp = igt_drm_format_to_bpp(format);
+ if (plane == PLANE_CUR)
+ tiling_for_size = LOCAL_DRM_FORMAT_MOD_NONE;
+ else
+ tiling_for_size = LOCAL_I915_FORMAT_MOD_X_TILED;
+
+ igt_calc_fb_size(drm.fd, width, height, bpp, tiling_for_size, &size,
+ &stride);
+
+ igt_create_fb_with_bo_size(drm.fd, width, height, format, tiling, fb,
+ size, stride);
}
static uint32_t pick_color(struct igt_fb *fb, enum color ecolor)
--
2.7.0.rc3
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