Cleanup Renderer.

I believe there were some mis-understandings
about the code. It's supposed to work

StartRendering();
  BeginDraw();
  EndDraw();
  BeginDraw();
  EndDraw();
  BeginDraw();
  EndDraw();
FinishRendering();

To try to enforce correct usage I separated
some platform dependant stuff from shared
stuff and added a few flags.

Also in this CL I made Texture::GetRenderSurface
not require a pack. This is so I because it feels
cleaner that way but also because I wanted to
use surfaces without a pack to take a screenshot.

Finally I put some screenshot code in for GL.

Also fixed some bugs with locking textures.

1) I thought it was x, y, width, height but it's
actually x1, y1, x2, y2

2) I was using width in places I should have been
using mip_width

Review URL: http://codereview.chromium.org/174199

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@24188 0039d316-1c4b-4281-b951-d872f2087c98

0 files changed, 0 insertions, 0 deletions