commit 0dc1be49343a5449f98e0d6d15e33008e154701b
author Nigel Tao <nigeltao@golang.org> Fri May 27 13:42:54 2016 +1000
committer Nigel Tao <nigeltao@golang.org> Sun May 29 01:31:23 2016 +0000
tree 758ec7d5237d16190f525022796c776d2f07bae1
parent 13222e7ab16392c011bfacb86a375c458b8afe16

shiny/driver: handle dstPoint or srcRect out of bounds.

This is for gldriver and x11driver. I don't know if the windriver does
the right thing if you pass e.g. dp = image.Pt(-64, 0) or sr =
image.Rect(-64, 0, 256, 128) to the Upload or Draw calls in
example/basic.

Also fix gldriver's Texture.Upload when the srcRect width is less than
the texture width.

Also fix gldriver's Window.Upload then the dstPoint is non-zero.

Also zero-initialize the x11driver's texture's pixels, as the X11 server
doesn't do this automatically.

Change-Id: Ifb6f93e2bea635977bc1ee911457af74acde658f
Reviewed-on: https://go-review.googlesource.com/23469
Reviewed-by: David Crawshaw <crawshaw@golang.org>