UC GPA calculator: https://rogerhub.com/gpa-calculator-uc/
All UC’s will use the capped weighted UC GPA and UCLA/UCB will also consider your fully weighted UC GPA.
UC’s tend to be GPA focused, but competitive test scores, EC’s with leadership and outstanding essays will all contribute to your chances.
CS happens to be one of the most competitive majors for all the UC"s, so your stats need to be above the averages.
Check out the Freshman profiles for all the UC’s to see how you compare: http://admission.universityofcalifornia.edu/freshman/profiles/index.html