Enable MRT support via glDrawBuffersEXT.

TRAC #22704

Signed-off-by: Nicolas Capens
Signed-off-by: Shannon Woods
Author: Jamie Madill

git-svn-id: https://angleproject.googlecode.com/svn/branches/es3proto@2128 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/src/libGLESv2/libGLESv2.cpp b/src/libGLESv2/libGLESv2.cpp
index 3d0d0c2..8eb8e91 100644
--- a/src/libGLESv2/libGLESv2.cpp
+++ b/src/libGLESv2/libGLESv2.cpp
@@ -7285,8 +7285,6 @@
 
 void __stdcall glDrawBuffers(GLsizei n, const GLenum* bufs)
 {
-    EVENT("(GLsizei n = %d, const GLenum* bufs = 0x%0.8p)", n, bufs);
-
     try
     {
         gl::Context *context = gl::getNonLostContext();
@@ -7297,9 +7295,9 @@
             {
                 return gl::error(GL_INVALID_OPERATION);
             }
-        }
 
-        UNIMPLEMENTED();
+            glDrawBuffersEXT(n, bufs);
+        }
     }
     catch(std::bad_alloc&)
     {