Blits to or from a y-tiled surface must always be a multiple of the tile size.
From page 16 of the HSW PRM
(https://01.org/linuxgraphics/sites/default/files/documentation/intel-gfx-prm-osrc-hsw-memory-views.pdf#16)
"The pitch of a tiled enclosing region must be an integral number of tile
widths"
Signed-off-by: Ben Widawsky <b...@bwidawsk.net>
---
src/mesa/drivers/dri/i965/intel_blit.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/src/mesa/drivers/dri/i965/intel_blit.c
b/src/mesa/drivers/dri/i965/intel_blit.c
index e919528..9500bd7 100644
--- a/src/mesa/drivers/dri/i965/intel_blit.c
+++ b/src/mesa/drivers/dri/i965/intel_blit.c
@@ -307,6 +307,9 @@ intelEmitCopyBlit(struct brw_context *brw,
if ((dst_y_tiled || src_y_tiled) && brw->gen < 6)
return false;
+ assert(!dst_y_tiled || (dst_pitch % 128) == 0);
+ assert(!src_y_tiled || (src_pitch % 128) == 0);
+
/* do space check before going any further */
do {
aper_array[0] = brw->batch.bo;
--
2.2.1
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