anv: Always initialize target_stencil_layout

Pass down stencil data from the subpass attachment like we do
elsewhere.  Only stencil attachments will make use of it.

Fixes warnings like

    ../src/intel/vulkan/genX_cmd_buffer.c: In function ‘cmd_buffer_begin_subpass’:
    ../src/intel/vulkan/genX_cmd_buffer.c:4656:41: warning: ‘target_stencil_layout’ may be used uninitialized in this function [-Wmaybe-uninitialized]
     4656 |       att_state->current_stencil_layout = target_stencil_layout;
          |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3557>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3557>

diff --git a/src/intel/vulkan/genX_cmd_buffer.c b/src/intel/vulkan/genX_cmd_buffer.c
index 556976575052f0e652d01e6bbb97756a40e74780..5fbdf93afbd69ae363fb9125f97974bb1ddfece6 100644 (file)
--- a/src/intel/vulkan/genX_cmd_buffer.c
+++ b/src/intel/vulkan/genX_cmd_buffer.c
@@ -4625,7 +4625,7 @@ cmd_buffer_begin_subpass(struct anv_cmd_buffer *cmd_buffer,
             (att_state->fast_clear && !att_state->clear_color_is_zero_one) ||
             att_state->input_aux_usage != att_state->aux_usage;
 
-      VkImageLayout target_layout, target_stencil_layout;
+      VkImageLayout target_layout;
       if (iview->aspect_mask & VK_IMAGE_ASPECT_ANY_COLOR_BIT_ANV &&
           !input_needs_resolve) {
          /* Layout transitions before the final only help to enable sampling
@@ -4636,9 +4636,11 @@ cmd_buffer_begin_subpass(struct anv_cmd_buffer *cmd_buffer,
          target_layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
       } else {
          target_layout = subpass->attachments[i].layout;
-         target_stencil_layout = subpass->attachments[i].stencil_layout;
       }
 
+      VkImageLayout target_stencil_layout =
+         subpass->attachments[i].stencil_layout;
+
       uint32_t base_layer, layer_count;
       if (image->type == VK_IMAGE_TYPE_3D) {
          base_layer = 0;