Implement glClearColorx()

Change-Id: Icd89b98b35c3450be81c6cccbc1c071ee20de2e4
Reviewed-on: https://swiftshader-review.googlesource.com/3170
Tested-by: Greg Hartman <ghartman@google.com>
Reviewed-by: Nicolas Capens <capn@google.com>
1 file changed