From ae82b5df88b9b307c2b7ce6f0f9b59332c83e362 Mon Sep 17 00:00:00 2001
From: Chia-I Wu <olvaffe@gmail.com>
Date: Mon, 11 Feb 2019 11:12:32 -0800
Subject: [PATCH] turnip: preliminary support for tu_GetImageSubresourceLayout

---
 src/freedreno/vulkan/tu_image.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/src/freedreno/vulkan/tu_image.c b/src/freedreno/vulkan/tu_image.c
index 8c91ea504be..657612d42c3 100644
--- a/src/freedreno/vulkan/tu_image.c
+++ b/src/freedreno/vulkan/tu_image.c
@@ -283,12 +283,18 @@ tu_GetImageSubresourceLayout(VkDevice _device,
                              const VkImageSubresource *pSubresource,
                              VkSubresourceLayout *pLayout)
 {
-   tu_stub();
+   TU_FROM_HANDLE(tu_image, image, _image);
 
-   /* Even though this is a stub, let's avoid heisenbugs by providing
-    * deterministic behavior.
-    */
-   memset(pLayout, 0, sizeof(*pLayout));
+   const uint32_t layer_offset = image->layer_size * pSubresource->arrayLayer;
+   const struct tu_image_level *level =
+      image->levels + pSubresource->mipLevel;
+
+   pLayout->offset = layer_offset + level->offset;
+   pLayout->size = level->size;
+   pLayout->rowPitch =
+      level->pitch * vk_format_get_blocksize(image->vk_format);
+   pLayout->arrayPitch = image->layer_size;
+   pLayout->depthPitch = level->size;
 }
 
 VkResult