[vlc-devel] [PATCH 4/5] direct3d9: avoid a copy in direct rendering

[Steve Lhomme]

---
 modules/video_output/win32/direct3d9.c | 29 +++++++++++++++++++----------
 1 file changed, 19 insertions(+), 10 deletions(-)

diff --git a/modules/video_output/win32/direct3d9.c b/modules/video_output/win32/direct3d9.c
index 4dbcbaadbd..84df885972 100644
--- a/modules/video_output/win32/direct3d9.c
+++ b/modules/video_output/win32/direct3d9.c
@@ -503,17 +503,26 @@ static void Prepare(vout_display_t *vd, picture_t *picture, subpicture_t *subpic
     else if (picture->context)
     {
         const struct va_pic_context *pic_ctx = (struct va_pic_context*)picture->context;
-        if (pic_ctx->picsys.surface != picture->p_sys->surface)
+        if (pic_ctx->picsys.surface != surface)
         {
-            HRESULT hr;
-            RECT visibleSource;
-            visibleSource.left = 0;
-            visibleSource.top = 0;
-            visibleSource.right = picture->format.i_visible_width;
-            visibleSource.bottom = picture->format.i_visible_height;
-            hr = IDirect3DDevice9_StretchRect( p_d3d9_dev->dev, pic_ctx->picsys.surface, &visibleSource, surface, &visibleSource, D3DTEXF_NONE);
-            if (FAILED(hr)) {
-                msg_Err(vd, "Failed to copy the hw surface to the decoder surface (hr=0x%0lx)", hr );
+            D3DSURFACE_DESC srcDesc, dstDesc;
+            IDirect3DSurface9_GetDesc(pic_ctx->picsys.surface, &srcDesc);
+            IDirect3DSurface9_GetDesc(surface, &dstDesc);
+            if ( srcDesc.Width == dstDesc.Width && srcDesc.Height == dstDesc.Height )
+                surface = pic_ctx->picsys.surface;
+            else
+            {
+                HRESULT hr;
+                RECT visibleSource;
+                visibleSource.left = 0;
+                visibleSource.top = 0;
+                visibleSource.right = picture->format.i_visible_width;
+                visibleSource.bottom = picture->format.i_visible_height;
+
+                hr = IDirect3DDevice9_StretchRect( p_d3d9_dev->dev, pic_ctx->picsys.surface, &visibleSource, surface, &visibleSource, D3DTEXF_NONE);
+                if (FAILED(hr)) {
+                    msg_Err(vd, "Failed to copy the hw surface to the decoder surface (hr=0x%0lx)", hr );
+                }
             }
         }
     }
-- 
2.14.2