[Mesa-dev] [PATCH v3 14/18] i965: correct mt->align_h for 2D textures on Skylake

[Nanley Chery]

From: Nanley Chery <nanley.g.chery at intel.com>

In agreement with commit 4ab8d59a23, vertical alignment values are equal to
four times the block height on Gen9+.

v2: add newlines to separate declarations, statments, and comments.

Reviewed-by: Anuj Phogat <anuj.phogat at gmail.com>
Reviewed-by: Neil Roberts <neil at linux.intel.com>
Signed-off-by: Nanley Chery <nanley.g.chery at intel.com>
---
 src/mesa/drivers/dri/i965/brw_tex_layout.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_tex_layout.c b/src/mesa/drivers/dri/i965/brw_tex_layout.c
index 4007697..ade2940 100644
--- a/src/mesa/drivers/dri/i965/brw_tex_layout.c
+++ b/src/mesa/drivers/dri/i965/brw_tex_layout.c
@@ -270,9 +270,14 @@ intel_vertical_texture_alignment_unit(struct brw_context *brw,
     * Where "*" means either VALIGN_2 or VALIGN_4 depending on the setting of
     * the SURFACE_STATE "Surface Vertical Alignment" field.
     */
-   if (_mesa_is_format_compressed(mt->format))
-      /* See comment above for the horizontal alignment */
-      return brw->gen >= 9 ? 16 : 4;
+    if (_mesa_is_format_compressed(mt->format)) {
+       unsigned int i, j;
+
+       _mesa_get_format_block_size(mt->format, &i, &j);
+
+       /* See comment above for the horizontal alignment */
+       return brw->gen >= 9 ? j * 4 : 4;
+    }
 
    if (mt->format == MESA_FORMAT_S_UINT8)
       return brw->gen >= 7 ? 8 : 4;
-- 
2.4.2