[FFmpeg-cvslog] hwcontext_vulkan: add workaround for broken Nvidia drivers

[Lynne]

ffmpeg | branch: master | Lynne <dev at lynne.ee> | Mon Jun 16 19:11:20 2025 +0000| [11428896dba40814edd880272b3bcb9b778fd4a8] | committer: Lynne

hwcontext_vulkan: add workaround for broken Nvidia drivers

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=11428896dba40814edd880272b3bcb9b778fd4a8
---

 libavutil/hwcontext_vulkan.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libavutil/hwcontext_vulkan.c b/libavutil/hwcontext_vulkan.c
index f94ad280ff..c8c6eed0fd 100644
--- a/libavutil/hwcontext_vulkan.c
+++ b/libavutil/hwcontext_vulkan.c
@@ -2854,6 +2854,12 @@ static int vulkan_frames_init(AVHWFramesContext *hwfc)
             return err;
     }
 
+    /* Nvidia is violating the spec because they thought no one would use this. */
+    if (p->dev_is_nvidia &&
+        (((fmt->nb_images == 1) && (fmt->vk_planes > 1)) ||
+         (av_pix_fmt_desc_get(hwfc->sw_format)->nb_components == 1)))
+        supported_usage &= ~VK_IMAGE_USAGE_HOST_TRANSFER_BIT;
+
     /* Image usage flags */
     if (!hwctx->usage) {
         hwctx->usage = supported_usage & (VK_IMAGE_USAGE_TRANSFER_DST_BIT |