Pocket Heaven

matejdro · Member Joined: 12 Nov 2009 Posts: 5

Scrolling left right on screen is very annoying.

Its possible to make feature that will stretch screen down to DS size?

P.S.: great emulator

dantheman · Posted: Thu Nov 12, 2009 4:09 pm Post subject:

No. Long story short, it's due to the way in which jEnesisDS emulates things by using the DS's native 2D hardware to speed up rendering. In order to be able to squish the screen horizontally, a software renderer would be needed, which would be much much slower. For an example, try the "SW" version of jEnesisDS v0.4a (and only that version) or PicoDriveDS.

matejdro · Member Joined: 12 Nov 2009 Posts: 5

I am testing PicoDriveDS now and its not so horrible slow, i can even say that is playable.

But picodrive sucks compared to jEnesisDS because it dont have sound and savestates. It would be great to include software rendering and stretching as option.

Granville · Posted: Thu Nov 12, 2009 11:46 pm Post subject:

You don't seem to get it do you? You cannot just include software rendering and stretching as an option without recoding the entire thing. In that case, the emulator would go at 30% speed and would NOT have sound. Using software is slow slow slow. You can't just add an option in to use software and have the scaling.
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Pulstar85 · Member Joined: 13 Aug 2008 Posts: 11

Will it be possible for Sega to emulate the Megadrive Sonic games on the DS properly in their upcoming compilation? Let's wait and see shall we.

Fragraham · Member Joined: 24 Aug 2005 Posts: 31

Those will be ports, not emulation. There is a vast difference. Emulation is essentially making one piece of hardware think it's a different one, in order to run programs intended for a specific kind of hardware (Game consoles).

Ports simply change the game's code to run on the new hardware. Porting requires of course having the game's source code rather than just a ROM, rewriting it, optimizing for the new hardware, and compiling it.

Emulation runs the ROM in its original form and works on the hardware end instead. Emulation is much more complicated and imprecise than porting.

Vague Rant · Posted: Wed Nov 25, 2009 9:59 am Post subject:

Baseless speculation. There's no way to tell whether Sonic Classic Collection will use an emulator or run the games natively. jEnesisDS has shown that it's entirely possible to emulate the Genesis well on the DS; I don't doubt that with the funding and pressure afforded by a commercial release, Sonic 1-3&K could be pretty faithfully emulated.
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Vague Rant

Asaki · Member Joined: 15 Apr 2009 Posts: 82

Let's just hope we don't end up with another Sonic Genesis GBA on our hands.

tepples · Posted: Wed Nov 25, 2009 11:51 pm Post subject:

If anything, an emulator specifically designed for how the Sonic games use the Blast Processing (i.e. DMA) chip and the rest of the Genesis could HLE the graphics and use the 3D hardware to stretch everything to fit.
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Granville · Posted: Sun Nov 29, 2009 5:47 am Post subject:

If they don't want to scale the entire screen, they could just manually romhack the games and reposition the HUD to be at the edges of DS resolution. Then nothing would be stretched or distorted, just the view would be a little cut off. They did that with the GBA Sonic 1 port, which sucked. But then, Stealth's port was awesome and did the same.
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