glupload: Remove texture scaling artifacts from the TEXTURE_RECTANGLE -> TEXTURE_2D transition
glupload: Remove texture scaling artifacts from the TEXTURE_RECTANGLE -> TEXTURE_2D transition

fixes the funky colours in some of the yuv formats

https://bugzilla.gnome.org/show_bug.cgi?id=721155

ystreet/gst-plugins-gl,ystreet/gst-plugins-gl,ystreet/gst-plugins-gl