From e09e2cbd28833badd1264a4125eccc11ecba411b Mon Sep 17 00:00:00 2001
From: heroboy <yangweiqin@gmail.com>
Date: Tue, 7 Apr 2015 19:36:58 +0800
Subject: [PATCH] set pixel shader and vertex shader to NULL

Previous graphic render may use shaders,so set pixel shader and vertex shader to NULL to force use fixed pipeline.
---
 examples/directx9_example/imgui_impl_dx9.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/examples/directx9_example/imgui_impl_dx9.cpp b/examples/directx9_example/imgui_impl_dx9.cpp
index b726e50ed..635e2c6c0 100644
--- a/examples/directx9_example/imgui_impl_dx9.cpp
+++ b/examples/directx9_example/imgui_impl_dx9.cpp
@@ -57,7 +57,8 @@ static void ImGui_ImplDX9_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_
         }
     }
     g_pVB->Unlock();
-
+    g_pd3dDevice->SetPixelShader(NULL);
+    g_pd3dDevice->SetVertexShader(NULL);
     g_pd3dDevice->SetStreamSource( 0, g_pVB, 0, sizeof( CUSTOMVERTEX ) );
     g_pd3dDevice->SetFVF( D3DFVF_CUSTOMVERTEX );