Adds missing formats to ComputePixelSize

TRAC #21607

Signed-off-by: Nicolas Capens
Signed-off-by: Daniel Koch
Author: Shannon Woods

git-svn-id: https://angleproject.googlecode.com/svn/trunk@1284 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/src/libGLESv2/utilities.cpp b/src/libGLESv2/utilities.cpp
index 47d2379..c3b19a0 100644
--- a/src/libGLESv2/utilities.cpp
+++ b/src/libGLESv2/utilities.cpp
@@ -305,6 +305,8 @@
       case GL_UNSIGNED_SHORT_4_4_4_4:
       case GL_UNSIGNED_SHORT_5_5_5_1:
       case GL_UNSIGNED_SHORT_5_6_5:
+      case GL_UNSIGNED_SHORT_4_4_4_4_REV_EXT:
+      case GL_UNSIGNED_SHORT_1_5_5_5_REV_EXT:
       case GL_UNSIGNED_SHORT:
         return sizeof(unsigned short);
       case GL_UNSIGNED_INT: