[PATCH i-g-t v2 2/4] lib/intel_blt: Change surface size calculation

[Zbigniew Kempczyński]

For tiled surfaces we need to ensure stride and height are valid
from the blit operation perspective. Calculate required surface
size according to tiling constraints.

Signed-off-by: Zbigniew Kempczyński <zbigniew.kempczynski at intel.com>
Cc: Karolina Drobnik <karolina.drobnik at intel.com>
---
 lib/intel_blt.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/lib/intel_blt.c b/lib/intel_blt.c
index 6d1aa0608f..2076cb56c4 100644
--- a/lib/intel_blt.c
+++ b/lib/intel_blt.c
@@ -1857,13 +1857,21 @@ blt_create_object(const struct blt_copy_data *blt, uint32_t region,
 		  bool create_mapping)
 {
 	struct blt_copy_object *obj;
-	uint64_t size = width * height * bpp / 8;
-	uint32_t stride = tiling == T_LINEAR ? width * 4 : width;
+	uint32_t stride, aligned_height;
+	uint64_t size;
 	uint32_t handle;
 	uint8_t pat_index = DEFAULT_PAT_INDEX;
 
 	igt_assert_f(blt->driver, "Driver isn't set, have you called blt_copy_init()?\n");
 
+	stride = blt_get_min_stride(width, bpp, tiling);
+	aligned_height = blt_get_aligned_height(height, bpp, tiling);
+	size = stride * aligned_height;
+
+	/* blitter command expects stride in dwords on tiled surfaces */
+	if (tiling)
+		stride /= 4;
+
 	obj = calloc(1, sizeof(*obj));
 
 	obj->size = size;
-- 
2.34.1