[Mesa-dev] [PATCH] i965: Check for miptree pitch alignment before using intel_miptree_map_movntdqa()

[Anuj Phogat]

I don't know where this alignment restriction came from. We have an
assert() in intel_miptree_map_movntdqa() which expects the pitch to
be 16 byte aligned.

Signed-off-by: Anuj Phogat <anuj.phogat at gmail.com>
---
 src/mesa/drivers/dri/i965/intel_mipmap_tree.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
index d4d9e76..b0b2697 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
@@ -2659,7 +2659,9 @@ intel_miptree_map(struct brw_context *brw,
    } else if (use_intel_mipree_map_blit(brw, mt, mode, level, slice)) {
       intel_miptree_map_blit(brw, mt, map, level, slice);
 #if defined(USE_SSE41)
-   } else if (!(mode & GL_MAP_WRITE_BIT) && !mt->compressed && cpu_has_sse4_1) {
+   } else if (!(mode & GL_MAP_WRITE_BIT) &&
+              !mt->compressed && cpu_has_sse4_1 &&
+              (mt->pitch % 16 == 0)) {
       intel_miptree_map_movntdqa(brw, mt, map, level, slice);
 #endif
    } else {
-- 
1.9.3