Use unsigned enum base types to use them as state bitfields.

BUG=17878699

Change-Id: Ib112ddf399ebd22676a775cdb6e6927e8f8ce25f
Reviewed-on: https://swiftshader-review.googlesource.com/1202
Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
diff --git a/src/Shader/SetupRoutine.cpp b/src/Shader/SetupRoutine.cpp
index e52da92..84c33d5 100644
--- a/src/Shader/SetupRoutine.cpp
+++ b/src/Shader/SetupRoutine.cpp
@@ -95,11 +95,11 @@
 
 				A = IfThenElse(w0w1w2 < 0, -A, A);
 
-				if(state.cullMode == Context::CULL_CLOCKWISE)
+				if(state.cullMode == CULL_CLOCKWISE)
 				{
 					If(A >= 0.0f) Return(false);
 				}
-				else if(state.cullMode == Context::CULL_COUNTERCLOCKWISE)
+				else if(state.cullMode == CULL_COUNTERCLOCKWISE)
 				{
 					If(A <= 0.0f) Return(false);
 				}