Windows 7 Professional 64-bit w Service Pack 1
ASUS nVidia GeForce GTX 760 2GB GDDR5 DirectCU Mini
Blender 2.69 - r60995
There is a texture mapping display bug.
See attached file: “clip mask display bug.blend”
In this file the texture has been mapped onto the UV's of a flat plane.
The texture was also reduced in scale so that the image does not extend to the edges of the plane.
The texture mapping was changed from 'repeat' to 'clip'.
It will be seen that the render of this file is correct, but the display in the 3D view does not show the effect of the texture clipping.
The 3D display will also not display changes to the settings of 'crop minimum' or 'crop maximum'.
The 3D display will also not display changes to any settings related to the normal 'repeat' texture mapping, including number of repeats and mirroring in X or Y