vulkan-decode-distinct-dpb-modifiers.patch

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diff --git a/media/ffvpx/libavcodec/vulkan_decode.c b/media/ffvpx/libavcodec/vulkan_decode.c

--- a/media/ffvpx/libavcodec/vulkan_decode.c

+++ b/media/ffvpx/libavcodec/vulkan_decode.c

@@ -1345,12 +1345,12 @@ int ff_vk_decode_init(AVCodecContext *avctx)

         VkImageTiling tiling = VK_IMAGE_TILING_OPTIMAL;

         void *create_pnext = (void *)ff_vk_find_struct(ctx->s.hwfc->create_pnext,

                                                        VK_STRUCTURE_TYPE_VIDEO_PROFILE_LIST_INFO_KHR);

-        /* Reference (DPB) images use the same tiling and pNext chain as output.

-         * If VK_VIDEO_DECODE_CAPABILITY_DPB_AND_OUTPUT_DISTINCT_BIT_KHR is 0, the

-         * driver does not support separate output and DPB with different layouts/tiling. */

+        /* With DPB_AND_OUTPUT_DISTINCT, DPB images never leave the decoder,

+         * so they don't need the output's DRM modifiers. */

         void *drm_create_pnext = (void *)ff_vk_find_struct(ctx->s.hwfc->create_pnext,

                                                            VK_STRUCTURE_TYPE_IMAGE_DRM_FORMAT_MODIFIER_LIST_CREATE_INFO_EXT);

-        if (drm_create_pnext) {

+        if (drm_create_pnext &&

+            !(ctx->dec_caps.flags & VK_VIDEO_DECODE_CAPABILITY_DPB_AND_OUTPUT_DISTINCT_BIT_KHR)) {

             create_pnext = drm_create_pnext;

             tiling       = VK_IMAGE_TILING_DRM_FORMAT_MODIFIER_EXT;

             av_assert2(ff_vk_find_struct(drm_create_pnext, VK_STRUCTURE_TYPE_VIDEO_PROFILE_LIST_INFO_KHR));