Make sure the Image texture provider does not return an atlassed texture

This has the implication that textures from texture providers are always
the complete texture with coordinates from 0-1, which is means we get
a copy for atlas textures which may end up affecting performance.

Alternatives are:
 - ShaderEffect does this, which means texture providers can provide
   atlas textures.
 - We expose the subrect to ShaderEffect, which means an API
   change in all shader effect classes, and let the vertex shader
   solve this. Worst API, fastest and most memory efficient.

Change-Id: Id58eb866f315012637345a6f731626abf4a7a86c
Reviewed-on: http://codereview.qt-project.org/6029
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Kim M. Kalland <kim.kalland@nokia.com>

0 files changed, 0 insertions, 0 deletions