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-rw-r--r--src/gallium/state_trackers/nine/device9.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/nine/device9.c b/src/gallium/state_trackers/nine/device9.c
index 47fd3a4..b094ede 100644
--- a/src/gallium/state_trackers/nine/device9.c
+++ b/src/gallium/state_trackers/nine/device9.c
@@ -1464,6 +1464,8 @@ NineDevice9_GetRenderTargetData( struct NineDevice9 *This,
user_assert(src->desc.Width == dst->desc.Width, D3DERR_INVALIDCALL);
user_assert(src->desc.Height == dst->desc.Height, D3DERR_INVALIDCALL);
+ user_assert(src->desc.Format != D3DFMT_NULL, D3DERR_INVALIDCALL);
+
NineSurface9_CopyDefaultToMem(dst, src);
return D3D_OK;