anv: implement VK_KHR_separate_depth_stencil_layouts

v2: Use ternary to simplify code (Jason)

v3: Reorder switch cases to follow existing section ordering (Nanley)
    Add missing comment in cmd_buffer_end_subpass() about new layout (Nanley)

v4: Fix layout comparison for stencil case (Nanley)
    Update a few more comments (Nanley)
    Move VK_IMAGE_LAYOUT_STENCIL_ATTACHMENT_OPTIMAL_KHR in color
    attachment case for future stencil-CCS support (Nanley)

v5: Missed comments update (Nanley)
    Updated relnotes.txt (Lionel)

Signed-off-by: Lionel Landwerlin <[email protected]>
Reviewed-by: Jason Ekstrand <[email protected]>
Reviewed-by: Nanley Chery <[email protected]>

1 files changed, 7 insertions, 0 deletions

diff --git a/src/intel/vulkan/anv_private.h b/src/intel/vulkan/anv_private.h
index 73cf85881d9..bdbe594a3ba 100644
--- a/src/intel/vulkan/anv_private.h
+++ b/src/intel/vulkan/anv_private.h
@@ -2412,6 +2412,7 @@ struct anv_attachment_state {
    struct anv_surface_state                     input;
 
    VkImageLayout                                current_layout;
+   VkImageLayout                                current_stencil_layout;
    VkImageAspectFlags                           pending_clear_aspects;
    VkImageAspectFlags                           pending_load_aspects;
    bool                                         fast_clear;
@@ -3744,6 +3745,9 @@ struct anv_subpass_attachment {
    VkImageUsageFlagBits usage;
    uint32_t attachment;
    VkImageLayout layout;
+
+   /* Used only with attachment containing stencil data. */
+   VkImageLayout stencil_layout;
 };
 
 struct anv_subpass {
@@ -3794,6 +3798,9 @@ struct anv_render_pass_attachment {
    VkImageLayout                                final_layout;
    VkImageLayout                                first_subpass_layout;
 
+   VkImageLayout                                stencil_initial_layout;
+   VkImageLayout                                stencil_final_layout;
+
    /* The subpass id in which the attachment will be used last. */
    uint32_t                                     last_subpass_idx;
 };