Avoid ambiguous vector casts.

Bug swiftshader:15

Change-Id: Ia42d21b4f2c9e19a839ffb414661f2dffa350692
Reviewed-on: https://swiftshader-review.googlesource.com/7711
Reviewed-by: Nicolas Capens <capn@google.com>
Tested-by: Nicolas Capens <capn@google.com>
Reviewed-on: https://swiftshader-review.googlesource.com/7630
Reviewed-by: Alexis Hétu <sugoi@google.com>
diff --git a/src/Shader/SetupRoutine.cpp b/src/Shader/SetupRoutine.cpp
index 7db625c..1845047 100644
--- a/src/Shader/SetupRoutine.cpp
+++ b/src/Shader/SetupRoutine.cpp
@@ -114,13 +114,13 @@
 				{
 					If(A > 0.0f)
 					{
-						*Pointer<Byte8>(primitive + OFFSET(Primitive,clockwiseMask)) =  Byte8(0xFFFFFFFFFFFFFFFF);
-						*Pointer<Byte8>(primitive + OFFSET(Primitive,invClockwiseMask)) = Byte8(0x0000000000000000);
+						*Pointer<Byte8>(primitive + OFFSET(Primitive,clockwiseMask)) = Byte8(0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF);
+						*Pointer<Byte8>(primitive + OFFSET(Primitive,invClockwiseMask)) = Byte8(0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
 					}
 					Else
 					{
-						*Pointer<Byte8>(primitive + OFFSET(Primitive,clockwiseMask)) =  Byte8(0x0000000000000000);
-						*Pointer<Byte8>(primitive + OFFSET(Primitive,invClockwiseMask)) = Byte8(0xFFFFFFFFFFFFFFFF);
+						*Pointer<Byte8>(primitive + OFFSET(Primitive,clockwiseMask)) = Byte8(0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
+						*Pointer<Byte8>(primitive + OFFSET(Primitive,invClockwiseMask)) = Byte8(0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF);
 					}
 				}
 
@@ -133,8 +133,8 @@
 			{
 				if(state.twoSidedStencil)
 				{
-					*Pointer<Byte8>(primitive + OFFSET(Primitive,clockwiseMask)) =  Byte8(0xFFFFFFFFFFFFFFFF);
-					*Pointer<Byte8>(primitive + OFFSET(Primitive,invClockwiseMask)) = Byte8(0x0000000000000000);
+					*Pointer<Byte8>(primitive + OFFSET(Primitive,clockwiseMask)) = Byte8(0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF);
+					*Pointer<Byte8>(primitive + OFFSET(Primitive,invClockwiseMask)) = Byte8(0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
 				}
 			}