[PATCH libdrm 2/3] radeon: Memory footprint of SI mipmap base level is padded to powers of two.

[Michel Dänzer]

From: Michel Dänzer <michel.daenzer at amd.com>

Signed-off-by: Michel Dänzer <michel.daenzer at amd.com>
---
 radeon/radeon_surface.c |   13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/radeon/radeon_surface.c b/radeon/radeon_surface.c
index 593c51c..98faa0b 100644
--- a/radeon/radeon_surface.c
+++ b/radeon/radeon_surface.c
@@ -963,9 +963,16 @@ static void si_surf_minify_linear_aligned(struct radeon_surface *surf,
     surf->level[level].npix_x = mip_minify(surf->npix_x, level);
     surf->level[level].npix_y = mip_minify(surf->npix_y, level);
     surf->level[level].npix_z = mip_minify(surf->npix_z, level);
-    surf->level[level].nblk_x = (surf->level[level].npix_x + surf->blk_w - 1) / surf->blk_w;
-    surf->level[level].nblk_y = (surf->level[level].npix_y + surf->blk_h - 1) / surf->blk_h;
-    surf->level[level].nblk_z = (surf->level[level].npix_z + surf->blk_d - 1) / surf->blk_d;
+
+    if (level == 0 && surf->last_level > 0) {
+        surf->level[level].nblk_x = (next_power_of_two(surf->level[level].npix_x) + surf->blk_w - 1) / surf->blk_w;
+        surf->level[level].nblk_y = (next_power_of_two(surf->level[level].npix_y) + surf->blk_h - 1) / surf->blk_h;
+        surf->level[level].nblk_z = (next_power_of_two(surf->level[level].npix_z) + surf->blk_d - 1) / surf->blk_d;
+    } else {
+        surf->level[level].nblk_x = (surf->level[level].npix_x + surf->blk_w - 1) / surf->blk_w;
+        surf->level[level].nblk_y = (surf->level[level].npix_y + surf->blk_h - 1) / surf->blk_h;
+        surf->level[level].nblk_z = (surf->level[level].npix_z + surf->blk_d - 1) / surf->blk_d;
+    }
 
     /* XXX: Second smallest level uses larger pitch, not sure of the real reason,
      * my best guess so far: rows evenly distributed across slice
-- 
1.7.10.4