Martin Dobias ed1efcbe22 Fix display of raster layer that would sometimes show just garbage
If a raster layer was displayed in a way that it fitted into canvas,
but would be shifted towards left or top edge of canvas, that bug
would be triggered.

By doing extra floating point math where not necessary, small
imprecisions were introduced to extent definition and GDAL provider
would end up requesting a window one pixel taller or wider, which
leads to RasterIO error and results into garbage displayed on canvas
2016-01-20 18:55:13 +01:00
..
2016-01-20 17:54:27 +02:00
2015-12-21 19:30:32 +11:00