Mesa (9.1): intel: Allocate hiz in intel_renderbuffer_move_to_temp()

[Paul Berry]

Module: Mesa
Branch: 9.1
Commit: 496996010561463bf0f2e2a7632978c548065b98
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=496996010561463bf0f2e2a7632978c548065b98

Author: Chad Versace <chad.versace at linux.intel.com>
Date:   Fri Apr  5 15:18:00 2013 -0700

intel: Allocate hiz in intel_renderbuffer_move_to_temp()

When moving the renderbuffer to a new miptree, we neglected to allocate
the hiz buffer for the new miptree. Oops.

Fixes all Piglit depthstencil-render-miplevels tests from crash to pass on
Sandybridge.

Note: This is a candidate for the 9.1 branch.
Reviewed-by: Eric Anholt <eric at anholt.net>
Reviewed-by: Paul Berry <stereotype441 at gmail.com>
Signed-off-by: Chad Versace <chad.versace at linux.intel.com>
(cherry picked from commit aa391976dfa12479185d9eeed1f2a0b4dce6c49b)

---

 src/mesa/drivers/dri/intel/intel_fbo.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/src/mesa/drivers/dri/intel/intel_fbo.c b/src/mesa/drivers/dri/intel/intel_fbo.c
index 37ecbd1..41412ee 100644
--- a/src/mesa/drivers/dri/intel/intel_fbo.c
+++ b/src/mesa/drivers/dri/intel/intel_fbo.c
@@ -999,6 +999,10 @@ intel_renderbuffer_move_to_temp(struct intel_context *intel,
                                  irb->mt->num_samples,
                                  false /* force_y_tiling */);
 
+   if (intel->vtbl.is_hiz_depth_format(intel, new_mt->format)) {
+      intel_miptree_alloc_hiz(intel, new_mt, irb->mt->num_samples);
+   }
+
    intel_miptree_copy_teximage(intel, intel_image, new_mt);
    intel_miptree_reference(&irb->mt, intel_image->mt);
    intel_renderbuffer_set_draw_offset(irb);