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[nikki]

Now iv'e finished the realtime generating loop of the tiles that make my world.
I started thinking of optimizing: drawing 48 * 64 * (posibbly more then one) tiles
every frame is possible, but not optimal I pressume,

I understand you could make a screen capture of this screen and keep it in your memory, and thus have only 1 draw command.

The thing i have troubles getting my head around is the scrolling.
since you only always add a row of column I am guessing there are some neat tricks out there.
What are your favourite techniques of making this world scrollable ?

[Draknek]

There certainly are techniques to do what you want, but I wouldn't bother until tile-rendering became a bottleneck.

Premature optimisation and all that...

That said, you're already on the right track: the basic idea would be to render to an image one tile wider and taller than the screen size. Then you scroll that image about until you step over the border and need to redraw parts of it.

[Glaiel-Gamer]

48x64x2xN textured triangles = 6144xN textured polys (max, there will probably be a lot of empty tiles anyway).

Pop them into a static vertex buffer, render in one call, every single tile.

You will get practically no slowdown, considering modern GPUs can render tens of millions of textured polys per second.

[nikki]

Today I've made a little test app
http://www.mydatanest.com/files/nicholaspeanut/38757_ykzdi/scrollableworld2.exe

with the cursor keys you move (no smooth pixel scrolling, the hardcore tile by tile move)
and with the tab you switch between drawroutines

I am curious of your numbers, and tips!

[nikki]

the test app 2 is just finished ! it has smooth scrolling now and multilayered drawing of shapes
http://www.mydatanest.com/files/nicholaspeanut/38800_thibo/scrollableworld3.exe


you move with cursor, change drawroutine with tab and change current tile to draw with space

I doubt any of your pc's will have speed issues.

[Eraser]

the test app 2 is just finished ! it has smooth scrolling now and multilayered drawing of shapes
http://www.mydatanest.com/files/nicholaspeanut/38800_thibo/scrollableworld3.exe


you move with cursor, change drawroutine with tab and change current tile to draw with space

I doubt any of your pc's will have speed issues.

Non optimized, I was getting ~25fps. Optimized, ~250fps. Spacebar had no visible effect. My computer is rather lacking in speed

[nikki]

the spacebar is for scrolling through the colors/tiles to draw.
the drawing is done with your left mouse button ,

i forgot to say that about the mouse before ...