intel: Keep track of x,y offsets in miptrees and use them for blitting.

By just using offsets, we confused the hardware's tiling calculations,
resulting in failures in miptree validation and blit clears.

Fixes piglit fbo-clearmipmap.

Bug #23552. (automatic mipmap generation)

1 files changed, 9 insertions, 20 deletions

diff --git a/src/mesa/drivers/dri/intel/intel_mipmap_tree.h b/src/mesa/drivers/dri/intel/intel_mipmap_tree.h
index c890b2a0d0..3bce54daa1 100644
--- a/src/mesa/drivers/dri/intel/intel_mipmap_tree.h
+++ b/src/mesa/drivers/dri/intel/intel_mipmap_tree.h
@@ -70,6 +70,10 @@ struct intel_mipmap_level
     * always zero in that case.
     */
    GLuint level_offset;
+   /** Offset to this miptree level, used in computing x_offset. */
+   GLuint level_x;
+   /** Offset to this miptree level, used in computing y_offset. */
+   GLuint level_y;
    GLuint width;
    GLuint height;
    /** Depth of the mipmap at this level: 1 for 1D/2D/CUBE, n for 3D. */
@@ -86,7 +90,7 @@ struct intel_mipmap_level
     * compute the offsets of depth/cube images within a mipmap level,
     * so have to store them as a lookup table.
     */
-   GLuint *image_offset;
+   GLuint *x_offset, *y_offset;
 };
 
 struct intel_mipmap_tree
@@ -176,19 +180,10 @@ GLubyte *intel_miptree_image_map(struct intel_context *intel,
 void intel_miptree_image_unmap(struct intel_context *intel,
                                struct intel_mipmap_tree *mt);
 
-
-/* Return the linear offset of an image relative to the start of the
- * tree:
- */
-GLuint intel_miptree_image_offset(struct intel_mipmap_tree *mt,
-                                  GLuint face, GLuint level);
-
-/* Return pointers to each 2d slice within an image.  Indexed by depth
- * value.
- */
-const GLuint *intel_miptree_depth_offsets(struct intel_mipmap_tree *mt,
-                                          GLuint level);
-
+void
+intel_miptree_get_image_offset(struct intel_mipmap_tree *mt,
+			       GLuint level, GLuint face, GLuint depth,
+			       GLuint *x, GLuint *y);
 
 void intel_miptree_set_level_info(struct intel_mipmap_tree *mt,
                                   GLuint level,
@@ -196,16 +191,10 @@ void intel_miptree_set_level_info(struct intel_mipmap_tree *mt,
                                   GLuint x, GLuint y,
                                   GLuint w, GLuint h, GLuint d);
 
-void intel_miptree_set_image_offset_ex(struct intel_mipmap_tree *mt,
-                                       GLuint level,
-                                       GLuint img, GLuint x, GLuint y,
-                                       GLuint offset);
-
 void intel_miptree_set_image_offset(struct intel_mipmap_tree *mt,
                                     GLuint level,
                                     GLuint img, GLuint x, GLuint y);
 
-
 /* Upload an image into a tree
  */
 void intel_miptree_image_data(struct intel_context *intel,