Youtube video with my "game":
I have missing pixel problem. At top left corner you can see few readings. My coordinates reading is missing some pixels from x coordinate (00:05 time in video). y coordinate is ok. That makes me believe, than my texture coordinates are calculated correctly. I'm not sure where should I start look for the root of problem. The same thing appears in FPS reading, P is missing pixels. But at the same time, CPU reading is ok.
Flickering - tiles/textures edge is flickering in white color. It is seen only when camera is moving. And again, I don't know where to look to fix it.
If my problems is uncommon, I supplied files as attachments. They are separated for each problem and redundant code removed.
Anyway, I hope for some suggestions