Allow zero sized system window FBO to be declared complete, and let the application use them for rendering.

TRAC #22548

Signed-off-by: Geoff Lang
Signed-off-by: Nicolas Capens
Author: Jamie Madill

git-svn-id: https://angleproject.googlecode.com/svn/branches/dx11proto@1890 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/src/libGLESv2/renderer/RenderTarget11.cpp b/src/libGLESv2/renderer/RenderTarget11.cpp
index ed44a41..0e9778d 100644
--- a/src/libGLESv2/renderer/RenderTarget11.cpp
+++ b/src/libGLESv2/renderer/RenderTarget11.cpp
@@ -141,6 +141,7 @@
     mRenderTarget = rtv;
     mDepthStencil = NULL;
     mShaderResource = srv;
+    mSubresourceIndex = 0;
 
     if (mRenderTarget && mTexture)
     {
@@ -167,7 +168,7 @@
     mRenderTarget = NULL;
     mDepthStencil = dsv;
     mShaderResource = srv;
-    mTexture = tex;
+    mSubresourceIndex = 0;
 
     if (mDepthStencil && mTexture)
     {