hwcontext_vulkan: dynamically load functions

This patch allows for alternative loader implementations.

1 files changed, 7 insertions, 0 deletions

diff --git a/libavutil/hwcontext_vulkan.h b/libavutil/hwcontext_vulkan.h
index ab075a74e0..e4645527d7 100644
--- a/libavutil/hwcontext_vulkan.h
+++ b/libavutil/hwcontext_vulkan.h
@@ -43,6 +43,13 @@ typedef struct AVVulkanDeviceContext {
     const VkAllocationCallbacks *alloc;
 
     /**
+     * Pointer to the instance-provided vkGetInstanceProcAddr loading function.
+     * If NULL, will pick either libvulkan or libvolk, depending on libavutil's
+     * compilation settings, and set this field.
+     */
+    PFN_vkGetInstanceProcAddr get_proc_addr;
+
+    /**
      * Vulkan instance. Must be at least version 1.1.
      */
     VkInstance inst;