Skip half-pixel shift on pre-transformed coordinates.

Bug 22624951

Change-Id: Ibda5f528212c9a8d503d8d6366cd7a42cd832c89
Reviewed-on: https://swiftshader-review.googlesource.com/3742
Tested-by: Nicolas Capens <capn@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <capn@google.com>
1 file changed