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* before rendering a background;
* before rendering sprites;
* while rendering more than 128 samples of audio at once ("Prefer fluid video");
* after every 16 scanlines of CPU execution instead of every 1;
* while waiting for an audio buffer to become available;
* while killing time between frames with fast-forward disabled.
Controller presses and releases are now combined in a DS button bitfield using a shorter 32-bit algorithm. See entry.cpp:NDSSFCAccumulateJoypad and #define ACCUMULATE_JOYPAD in the source.
This is still not suitable for playing platformers frame-perfectly, but it's much better than half a second of latency to press or release a button, and one still needs to press buttons a bit more than just light taps. I'd say 50 milliseconds is the latency now. Platformers requiring more precision can be played with frameskip 0.
DMA does not require double-buffered displaying, so synchronise the controller more often by disabling double-buffered displaying again.
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otherwise the next screen can go into DMA.
Use channel 1 instead of channel 5, which must be busy for some reason.
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DS2 dma.h to ds2_dma.h.
Add preliminary support for drawing emulated screens with DS2 DMA.
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switch to the user's chosen frequency for the game.
Conflicts:
source/nds/ds2_main.c
source/nds/entry.cpp
source/nds/gui.c
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loading in Super Mario World.
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crackle constantly, like a record player. Most audible with earphones.
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video or audio.
This makes most games playable, but the player can choose to get fluid audio instead of fluid video in sound-test modes or games with epic soundtracks.
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Also correctly fill the buffer with silence when returning from pause. This reduces or eliminates crackling.
The emulator kills time in two circumstances:
* In automatic frameskip mode, without fast forwarding, the emulator kills time if it rendered a frame early.
* In manual frameskip mode, without fast forwarding, the emulator kills time to wait for the next rendered frame.
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* Fake out the buffer timing by sending a buffer full of silence when returning from pause. Reduces crackling introduced by the next point.
* Send buffers only once every 23.22 milliseconds, not up to four buffers at once (92.88 milliseconds) and randomly thereafter. Reduces note-length jumpiness.
* Audio may have trouble catching up if external jitter reaches 11.61 milliseconds. That happens if Mode 7 images or filtered modes take a long time to render, or if chips take a long time to execute.
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milliseconds and set both backlights to on.
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emulation.
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These hotkeys can be overridden per game so that the global version of the hotkey can be ignored.
* Language file fixups related to \n (newlines).
* Pictochat fixups: shorten START and SELECT to ST and SEL. Should still be recognisable.
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#define'd away, GUI volatility is simply removed.
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This reverts commit 944d9a729455de435c3d200752308ceedf250196.
Conflicts:
source/nds/entry.cpp
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unused variable, variable used uninitialised, unused function (when not used anywhere else with a #define).
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auto frameskip is delaying because it's early.
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This reverts commit 0d048d05ee50625f15d5235d362df6ee71903fc5.
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controller status every scanline again.
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Wrap the offset into the audio buffer less often.
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ds2_setBacklight() MUST STAY, however, otherwise the emulator can crash with the bottom backlight off if a touch is recognised twice in a row. That happens with some broken styluses, so it's not unexpected.
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carry the state of the GUI.
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FOREVER_16_BIT_SOUND and FOREVER_STEREO and use them throughout the code.
This is essentially commit 6b36e79013d4c9273a96a9783a2bccdb516f174a, but for sound instead of graphics.
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explain in code comments why they're needed.
I know ds2_setBacklight(unsigned int) needs a delay before it, otherwise if done too close to another call, it crashes.
This partially reverts commit 8951fdff1aada126257e07699ea6f132cb8d2e65.
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before the menu, and restart it after it ends.
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Hz audio at 2000-microsecond intervals works.
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problem isn't as apparent anymore, and automatic frame skipping doesn't go to 8 FPS all the time in Super Mario World. Thank the deities!
Reverses the auto frameskip synchronisation from commit dac11c74ac112728016e51625ac9f2a727152ddd, because that doesn't play well with interrupts.
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the code is drawing a frame early in automatic frame skip mode. Otherwise, overflow occurs, and we skip 4 billion images.
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frameskip mode."
This reverts commit d9b6322caafcbd355848a32acd8b8c0fa1746264.
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Remove old automatic frameskip code.
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to 8 FPS right away and constantly. The equivalent frame skip will be 2, 3, 5 or 8 most of the time, depending on the game, and will vary a bit depending on rendering demands.
For example, the frame skipping in Super Mario World is 3 on the map and in graphically simple levels, and 5 in complex levels.
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speed by 25% if frame skip 3 (Show 1 in 4) rendered a frame early.
Optimise the controller code. I don't expect to allow remapping any time soon, because the DS has buttons for every single SNES controller button and nothing more.
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PAL timings (20 ms per frame).
User-selected frameskip causes slowdowns if the game runs slower than the resulting frame rate, but synchronises correctly if the game runs faster.
Automatic frame skipping is still the default. It now only skips up to 8 frames, but in some games still skips that entire 8 frames. What's needed is an algorithm that averages frame latencies over a few seconds and skips while the latency is LOWER than the average.
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parse, but is required by Super Mario All-Stars at least.
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extent this will save on battery usage, though I do set the DSTWO's CPU to the lowest frequency while it sleeps.
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* source/nds/displaymodes.cpp: Rewritten, assigned copyright to myself (GPLv2).
* CATSFC/system/language.msg: Changed the English and French text for display modes.
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audio for a game. This allows some games that synchronise on the APU's actions to continue working.
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gfx.cpp, others: Avoid always checking for Settings.SixteenBit if FOREVER_16_BIT is defined.
port.h: Define FOREVER_16_BIT below PIXEL_FORMAT.
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screen. Method 1 causes problems after about 15 minutes; despite the double-buffering, screen updates start to tear in the middle consistently.
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selection interface freezes when it gets to the folder containing Mightymo's cheat files, whereas it did not do this before with the converted Mightymo cheats. (335 files -> 679, though.)
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lose keys entirely sometimes, and could otherwise delay a button press or release by 200 ms.
This was the entire reason I created the fork, and I finally did it! It syncs the controls every scanline of a frame, which costs about 60,000 MIPS instructions per frame to deal with. Luckily, the processor runs at 396 MHz, which means the cost of checking the controls is 1% of the CPU's power.
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