tree c2fdfa5510db5978547929b493845cdd11bc0aa6
parent 2be7e01382ee9c036de9c09585677dfd25d70253
author egdaniel <egdaniel@google.com> 1459192482 -0700
committer Commit bot <commit-bot@chromium.org> 1459192483 -0700

Use NV glsl shader compiler for Vulkan

The nvidia direct glsl shader compiler seems to perform much better than using
shaderc to compile to spir-v first.

This change also includes a change to prefer host cached memory for buffers.
Having cached buffers signifcantly improves performance whenever we need to do
buffer reads and writes.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1835813003

Review URL: https://codereview.chromium.org/1835813003