Henri Verbeet : wined3d: Make sure all contexts are finished drawing before calling SwapBuffers().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: daf0aeb34a0e34f1a9519bdacff121cd85dced30
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=daf0aeb34a0e34f1a9519bdacff121cd85dced30

Author: Henri Verbeet <hverbeet at codeweavers.com>
Date:   Wed Jan 27 20:19:41 2010 +0100

wined3d: Make sure all contexts are finished drawing before calling SwapBuffers().

This causes a small performance hit when multiple GL contexts are used. As an
optimization we could use ARB_sync to only wait for the last draw call instead
of all GL commands.

---

 dlls/wined3d/swapchain.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/dlls/wined3d/swapchain.c b/dlls/wined3d/swapchain.c
index 434eb3f..6b44cd5 100644
--- a/dlls/wined3d/swapchain.c
+++ b/dlls/wined3d/swapchain.c
@@ -343,6 +343,7 @@ static HRESULT WINAPI IWineD3DSwapChainImpl_Present(IWineD3DSwapChain *iface, CO
         swapchain_blit(This, context, &src_rect, &dst_rect);
     }
 
+    if (This->num_contexts > 1) wglFinish();
     SwapBuffers(This->context[0]->hdc); /* TODO: cycle through the swapchain buffers */
 
     TRACE("SwapBuffers called, Starting new frame\n");