Android :: Opengl ES Tiling Engine - Smooth Scrolling

Following this : http://stackoverflow.com/questions/2125354/best-approach-for-oldschool-2d-zelda-like-game

I got a simple 2D tiles generator working, im reading an int map[100][100] filled with either 1's or 0's and draw tiles according to their tile id, 0 is water, 1 grass.

Im using some basic Numpad control handler, using a camIncr (32.0f), i set the camera position according to the movement :

CODE:.......

In my draw loop, im just drawing enough tiles to fit on my screen, and track the top left tile using cameraOffsetX and cameraOffsetY (its the camera position / tile size )

Im using a GLU.gluOrtho2D for my projection.

Here is the draw loop inside my custom renderer :

CODE:.............

my tiledBackground draw function :

CODE:..............

The waterTile and grassTile .draw function draw a 32x32 textured tile, might post the code if relevant.

Everything is fine, i can move using numpad arrows, and my map 'moves' with me, since im only drawing what i can see, its fast (see http://stackoverflow.com/questions/2129125/android-opengl-es-simple-tile-generator-performance-problem where Aleks pointed me to a simple 'culling' idea)

I would like my engine to 'smooth scroll' now. I've tried tweaking the camIncr variable, the GLU.gluOrtho2D etc, nothing worked.