Adds support for per-framebuffer IMPLEMENTATION_COLOR_READ_FORMAT and TYPE

TRAC #21607

Signed-off-by: Nicolas Capens
Signed-off-by: Daniel Koch

Author:    Shannon Woods

git-svn-id: https://angleproject.googlecode.com/svn/trunk@1283 736b8ea6-26fd-11df-bfd4-992fa37f6226
5 files changed