Create a Direct3D 11 device, if enabled and available.

TRAC #21925
Signed-off-by: Daniel Koch
Author: Nicolas Capens

git-svn-id: https://angleproject.googlecode.com/svn/branches/dx11proto@1399 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/src/libGLESv2/renderer/Renderer.cpp b/src/libGLESv2/renderer/Renderer.cpp
index f6c200d..8169bf7 100644
--- a/src/libGLESv2/renderer/Renderer.cpp
+++ b/src/libGLESv2/renderer/Renderer.cpp
@@ -8,13 +8,51 @@
 
 #include "libGLESv2/renderer/Renderer.h"
 #include "libGLESv2/renderer/Renderer9.h"
+#include "libGLESv2/renderer/Renderer11.h"
+
+#if !defined(ANGLE_ENABLE_D3D11)
+// Enables use of the Direct3D 11 API, when available
+#define ANGLE_ENABLE_D3D11 0
+#endif
 
 extern "C"
 {
 
 rx::Renderer *glCreateRenderer(egl::Display *display, HDC hDc, bool softwareDevice)
 {
-    return new rx::Renderer9(display, hDc, softwareDevice);
+    rx::Renderer *renderer = NULL;
+    EGLint status = EGL_BAD_ALLOC;
+    
+    #if ANGLE_ENABLE_D3D11
+        renderer = new rx::Renderer11(display, hDc);
+    
+        if (renderer)
+        {
+            status = renderer->initialize();
+        }
+
+        if (status == EGL_SUCCESS)
+        {
+            return renderer;
+        }
+
+        // Failed to create a D3D11 renderer, try creating a D3D9 renderer
+        delete renderer;
+    #endif
+
+    renderer = new rx::Renderer9(display, hDc, softwareDevice);
+    
+    if (renderer)
+    {
+        status = renderer->initialize();
+    }
+
+    if (status == EGL_SUCCESS)
+    {
+        return renderer;
+    }
+
+    return NULL;
 }
 
 void glDestroyRenderer(rx::Renderer *renderer)