Re-implement line loops by constructing a 'looping' index buffer, so it is compatible with instanced draws.

TRAC #19489
Signed-off-by: Daniel Koch
Author: Nicolas Capens

git-svn-id: https://angleproject.googlecode.com/svn/trunk@973 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/src/libGLESv2/IndexDataManager.h b/src/libGLESv2/IndexDataManager.h
index 3496d12..c1d4168 100644
--- a/src/libGLESv2/IndexDataManager.h
+++ b/src/libGLESv2/IndexDataManager.h
@@ -18,6 +18,11 @@
 
 #include "libGLESv2/Context.h"
 
+namespace
+{
+    enum { INITIAL_INDEX_BUFFER_SIZE = 4096 * sizeof(GLuint) };
+}
+
 namespace gl
 {