[Mesa-dev] [PATCH] i965/gen9: Don't use fast copy blit in case of non power of 2 cpp

[Anuj Phogat]

Many piglit tests (if using fast copy blit in Mesa) failed earlier
because I missed adding this condition. Fast copy blit is currently
enabled for use only with Yf/Ys tiling.

Signed-off-by: Anuj Phogat <anuj.phogat at gmail.com>
---
 src/mesa/drivers/dri/i965/intel_blit.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/intel_blit.c b/src/mesa/drivers/dri/i965/intel_blit.c
index 6d92580..bab7d90 100644
--- a/src/mesa/drivers/dri/i965/intel_blit.c
+++ b/src/mesa/drivers/dri/i965/intel_blit.c
@@ -431,8 +431,10 @@ can_fast_copy_blit(struct brw_context *brw,
    if ((dst_offset | src_offset) & 63)
       return false;
 
-   /* Color depth greater than 128 bits not supported. */
-   if (cpp > 16)
+   /* Color depths which are not power of 2 or greater than 128 bits are
+    * not supported.
+    */
+   if (!is_power_of_two(cpp) || cpp > 16)
       return false;
 
    /* For Fast Copy Blits the pitch cannot be a negative number. So, bit 15
-- 
2.4.3