vo_direct3d, dxva2: use the same D3D device

Since we still read-back (and don't have hard plans on changing this),
this doesn't have much of an advantage.

1 files changed, 10 insertions, 0 deletions

diff --git a/video/decode/dxva2.c b/video/decode/dxva2.c
index 852319611d..62b27671ef 100644
--- a/video/decode/dxva2.c
+++ b/video/decode/dxva2.c
@@ -36,6 +36,7 @@
 #include "video/fmt-conversion.h"
 #include "video/mp_image_pool.h"
 #include "video/hwdec.h"
+#include "video/d3d.h"
 #include "gpu_memcpy_sse4.h"
 
 // A minor evil.
@@ -341,6 +342,15 @@ static int create_device(struct lavc_ctx *s)
     D3DDISPLAYMODE        d3ddm;
     UINT adapter = D3DADAPTER_DEFAULT;
 
+    if (s->hwdec_info && s->hwdec_info->hwctx && s->hwdec_info->hwctx->d3d_ctx) {
+        ctx->d3d9device = s->hwdec_info->hwctx->d3d_ctx->d3d9_device;
+        if (ctx->d3d9device) {
+            IDirect3D9_AddRef(ctx->d3d9device);
+            MP_VERBOSE(ctx, "Using VO-supplied device %p.\n", ctx->d3d9device);
+            return 0;
+        }
+    }
+
     ctx->d3dlib = LoadLibrary(L"d3d9.dll");
     if (!ctx->d3dlib) {
         MP_ERR(ctx, "Failed to load D3D9 library\n");