Talk:Petit Computer 3/@comment-15296152-20140916233546/@comment-15296152-20140917020713

Actually, can't background "wrap-around"? I thought XSCREEN 2 did that? If they do, and backgrounds can still be rotated/scaled, then I have some doubt that they'd render each tile of the background individually (because of the process of culling so many individual tiles if you scale the wrap-around background to be small), but instead render one big polygon quad per layer (that spans the entire screen), and lets shaders do the rest. From what I understand of the PICA200 GPU in the 3DS, it has its own programmable shaders through the DMP proprietary extensions. So, if shaders are what's allowing backgrounds to do what they can, then they could split up this one big quad into 240/480 polygon lines to essentially provide us with scanline manipulation.

Anyways, if they aren't using shaders, I guess we can at least be thankful that the speed increase (100x that of PTC?) may help for this sort of thing, as well as raycasters.