[Mesa-dev] [PATCH 14/22] i965/miptree: Add support for imported bo offsets for isl based

[Topi Pohjolainen]

Signed-off-by: Topi Pohjolainen <topi.pohjolainen at intel.com>
---
 src/mesa/drivers/dri/i965/intel_mipmap_tree.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
index 879036ce77..a0b129adb4 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
@@ -1435,9 +1435,22 @@ intel_miptree_get_image_offset(const struct intel_mipmap_tree *mt,
 			       GLuint level, GLuint slice,
 			       GLuint *x, GLuint *y)
 {
+   if (level == 0 && slice == 0) {
+      *x = mt->level[0].level_x;
+      *y = mt->level[0].level_y;
+      return;
+   }
+
    if (mt->surf.size > 0) {
       uint32_t x_offset_sa, y_offset_sa;
 
+      /* Miptree itself can have an offset only if it represents a single
+       * slice in an imported buffer object.
+       * See intel_miptree_create_for_dri_image().
+       */
+      assert(mt->level[0].level_x == 0);
+      assert(mt->level[0].level_y == 0);
+
       /* Given level is relative to level zero while the miptree may be
        * represent just a subset of all levels starting from 'first_level'.
        */
-- 
2.11.0