From 67c0b7a529177eeb75e46c2ff803e35a88da4b1c Mon Sep 17 00:00:00 2001
From: David Rosca <david.rosca@amd.com>
Date: Thu, 30 Oct 2025 17:50:08 +0100
Subject: [PATCH] vulkan/video: Add chroma subsampling to video session

Reviewed-by: Benjamin Cheng <benjamin.cheng@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38158>
---
 src/vulkan/runtime/vk_video.c | 1 +
 src/vulkan/runtime/vk_video.h | 1 +
 2 files changed, 2 insertions(+)

diff --git a/src/vulkan/runtime/vk_video.c b/src/vulkan/runtime/vk_video.c
index 1942ed532ee..881e67c6528 100644
--- a/src/vulkan/runtime/vk_video.c
+++ b/src/vulkan/runtime/vk_video.c
@@ -46,6 +46,7 @@ vk_video_session_init(struct vk_device *device,
    vid->max_active_ref_pics = create_info->maxActiveReferencePictures;
    vid->luma_bit_depth = create_info->pVideoProfile->lumaBitDepth;
    vid->chroma_bit_depth = create_info->pVideoProfile->chromaBitDepth;
+   vid->chroma_subsampling = create_info->pVideoProfile->chromaSubsampling;
 
    switch (vid->op) {
    case VK_VIDEO_CODEC_OPERATION_DECODE_H264_BIT_KHR: {
diff --git a/src/vulkan/runtime/vk_video.h b/src/vulkan/runtime/vk_video.h
index de31d5e326e..41c8c9bb22e 100644
--- a/src/vulkan/runtime/vk_video.h
+++ b/src/vulkan/runtime/vk_video.h
@@ -83,6 +83,7 @@ struct vk_video_session {
    VkVideoCodecOperationFlagsKHR op;
    VkVideoComponentBitDepthFlagsKHR luma_bit_depth;
    VkVideoComponentBitDepthFlagsKHR chroma_bit_depth;
+   VkVideoChromaSubsamplingFlagsKHR chroma_subsampling;
    VkExtent2D max_coded;
    VkFormat picture_format;
    VkFormat ref_format;