From 13d0df7c2156e02a1198ae1913ad29bd65affa77 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jan=20Ekstr=C3=B6m?= <jeebjp@gmail.com>
Date: Mon, 6 Dec 2021 21:58:57 +0200
Subject: vo_gpu/d3d11: enable access to the underlying ra_ctx swap chain

This enables us to utilize it from gpu-next.
---
 video/out/d3d11/context.c | 13 +++++++++++++
 video/out/d3d11/context.h |  9 +++++++++
 2 files changed, 22 insertions(+)
 create mode 100644 video/out/d3d11/context.h

diff --git a/video/out/d3d11/context.c b/video/out/d3d11/context.c
index 72e3447788..bbdf170df1 100644
--- a/video/out/d3d11/context.c
+++ b/video/out/d3d11/context.c
@@ -24,6 +24,7 @@
 #include "video/out/gpu/d3d11_helpers.h"
 #include "video/out/gpu/spirv.h"
 #include "video/out/w32_common.h"
+#include "context.h"
 #include "ra_d3d11.h"
 
 static int d3d11_validate_adapter(struct mp_log *log,
@@ -526,6 +527,18 @@ error:
     return false;
 }
 
+IDXGISwapChain *ra_d3d11_ctx_get_swapchain(struct ra_ctx *ra)
+{
+    if (ra->swapchain->fns != &d3d11_swapchain)
+        return NULL;
+
+    struct priv *p = ra->priv;
+
+    IDXGISwapChain_AddRef(p->swapchain);
+
+    return p->swapchain;
+}
+
 const struct ra_ctx_fns ra_ctx_d3d11 = {
     .type     = "d3d11",
     .name     = "d3d11",
diff --git a/video/out/d3d11/context.h b/video/out/d3d11/context.h
new file mode 100644
index 0000000000..8a9ef4cc0d
--- /dev/null
+++ b/video/out/d3d11/context.h
@@ -0,0 +1,9 @@
+#pragma once
+
+#include <dxgi.h>
+
+#include "video/out/gpu/context.h"
+
+// Get the underlying D3D11 swap chain from an RA context. The returned swap chain is
+// refcounted and must be released by the caller.
+IDXGISwapChain *ra_d3d11_ctx_get_swapchain(struct ra_ctx *ra);
-- 
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