vo_gpu/d3d11: add helper function to get ra_format from DXGI_FORMAT

2 files changed, 16 insertions, 0 deletions

diff --git a/video/out/d3d11/ra_d3d11.c b/video/out/d3d11/ra_d3d11.c
index ebf3ab9fba..44f0fbdcf3 100644
--- a/video/out/d3d11/ra_d3d11.c
+++ b/video/out/d3d11/ra_d3d11.c
@@ -202,6 +202,18 @@ DXGI_FORMAT ra_d3d11_get_format(const struct ra_format *fmt)
     return d3d->fmt;
 }
 
+const struct ra_format *ra_d3d11_get_ra_format(struct ra *ra, DXGI_FORMAT fmt)
+{
+    for (int i = 0; i < ra->num_formats; i++) {
+        struct ra_format *ra_fmt = ra->formats[i];
+
+        if (ra_d3d11_get_format(ra_fmt) == fmt)
+            return ra_fmt;
+    }
+
+    return NULL;
+}
+
 static void setup_formats(struct ra *ra)
 {
     // All formats must be usable as a 2D texture
diff --git a/video/out/d3d11/ra_d3d11.h b/video/out/d3d11/ra_d3d11.h
index f9cada132c..6f62a7f23f 100644
--- a/video/out/d3d11/ra_d3d11.h
+++ b/video/out/d3d11/ra_d3d11.h
@@ -11,6 +11,10 @@
 // Get the underlying DXGI format from an RA format
 DXGI_FORMAT ra_d3d11_get_format(const struct ra_format *fmt);
 
+// Gets the matching ra_format for a given DXGI format.
+// Returns a nullptr in case of no known match.
+const struct ra_format *ra_d3d11_get_ra_format(struct ra *ra, DXGI_FORMAT fmt);
+
 // Create an RA instance from a D3D11 device. This takes a reference to the
 // device, which is released when the RA instance is destroyed.
 struct ra *ra_d3d11_create(ID3D11Device *device, struct mp_log *log,