tree 20e404b744cb099627268d39825aa02ccf3bff3a
parent b293696c8144c75a62bdaa8480fb679b0f9bd209
author Nigel Tao <nigeltao@golang.org> 1428387725 +1000
committer Nigel Tao <nigeltao@golang.org> 1428446106 +0000

draw: generate code for op == Over.

This change just does the mechanical codegen for the op == Over cases.
The actual compositing operator is still effectively Src. Fixing that,
which is less mechanical, will be a follow-up change.

Change-Id: I87805114d49e7ce7087066187a2f4c722a883c01
Reviewed-on: https://go-review.googlesource.com/8524
Reviewed-by: Rob Pike <r@golang.org>