Synchronise the controller status more spread out inside a rendered frame:

* 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.

1 files changed, 0 insertions, 3 deletions

diff --git a/source/ppu.h b/source/ppu.h
index 1d3c7b7..8f8b8e7 100644
--- a/source/ppu.h
+++ b/source/ppu.h
@@ -152,9 +152,6 @@ struct InternalPPU {
     int	   CurrentLine;
     int	   Controller;
     uint32 Joypads[5];
-#ifdef SYNC_JOYPAD_AT_HBLANK
-	uint32 JoypadsAtHBlanks[5][SNES_MAX_PAL_VCOUNTER];
-#endif
     uint32 SuperScope;
     uint32 Mouse[2];
     int    PrevMouseX[2];