BufferStrategy: I need a bigger backbuffer

[nonnus29]

When I do a scrolling tile map I use a backbuffer one tile larger than the displayed area so I can draw a subimage to get my scrolling.  I just noticed when using bufferstrategy the buffers are all the same size; is there a way to get a bigger buffer in buffer strategy?  Or will I have to do it myself?

[Jeff]

Im not sure i understand the problem.

Can't you just BLT the larger area with a screen-sized clipping region?

[nonnus29]

I'm using a Frame right now, not full screen.   To use a clipping region the way I need to I would have to use negative coordinates to position the the first row of tiles.  I don't know if thats possible or not.  So I used a volatile image to draw the tilemap on, drew a subimage of that to the backbuffer the bufferstrategy gave me and still got 150+ fps.  Nice.

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[swpalmer]

To use a clipping region the way I need to I would have to use negative coordinates to position the the first row of tiles.  I don't know if thats possible or not.

It should clip appropriately and work out fine.