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Libretro: Reduce rumble callbacks

This commit is contained in:
Vicki Pfau 2018-10-05 08:42:20 -07:00
parent 1bf29ae362
commit a8d991e24f
2 changed files with 21 additions and 16 deletions
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1
CHANGES
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@ -127,6 +127,7 @@ Misc:
- Wii: Stretch now sets pixel-accurate mode size cap
- Qt: Ensure camera image is valid
- GB: Improved SGB2 support
- Libretro: Reduce rumble callbacks
0.7 beta 1: (2018-09-24)
- Initial beta for 0.7

36
src/platform/libretro/libretro.c
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@ -23,7 +23,6 @@
#include <mgba/gba/interface.h>
#include <mgba/internal/gba/gba.h>
#endif
#include <mgba-util/circle-buffer.h>
#include <mgba-util/memory.h>
#include <mgba-util/vfs.h>
@ -55,8 +54,8 @@ static void* data;
static size_t dataSize;
static void* savedata;
static struct mAVStream stream;
static int rumbleLevel;
static struct CircleBuffer rumbleHistory;
static int rumbleUp;
static int rumbleDown;
static struct mRumble rumble;
static struct GBALuminanceSource lux;
static int luxLevel;
@ -254,7 +253,6 @@ void retro_init(void) {
struct retro_rumble_interface rumbleInterface;
if (environCallback(RETRO_ENVIRONMENT_GET_RUMBLE_INTERFACE, &rumbleInterface)) {
rumbleCallback = rumbleInterface.set_rumble_state;
CircleBufferInit(&rumbleHistory, RUMBLE_PWM);
rumble.setRumble = _setRumble;
} else {
rumbleCallback = 0;
@ -347,6 +345,18 @@ void retro_run(void) {
unsigned width, height;
core->desiredVideoDimensions(core, &width, &height);
videoCallback(outputBuffer, width, height, BYTES_PER_PIXEL * 256);
if (rumbleCallback) {
if (rumbleUp) {
rumbleCallback(0, RETRO_RUMBLE_STRONG, rumbleUp * 0xFFFF / (rumbleUp + rumbleDown));
rumbleCallback(0, RETRO_RUMBLE_WEAK, rumbleUp * 0xFFFF / (rumbleUp + rumbleDown));
} else {
rumbleCallback(0, RETRO_RUMBLE_STRONG, 0);
rumbleCallback(0, RETRO_RUMBLE_WEAK, 0);
}
rumbleUp = 0;
rumbleDown = 0;
}
}
static void _setupMaps(struct mCore* core) {
@ -437,9 +447,8 @@ void retro_reset(void) {
core->reset(core);
_setupMaps(core);
if (rumbleCallback) {
CircleBufferClear(&rumbleHistory);
}
rumbleUp = 0;
rumbleDown = 0;
}
bool retro_load_game(const struct retro_game_info* game) {
@ -557,7 +566,6 @@ void retro_unload_game(void) {
data = 0;
mappedMemoryFree(savedata, SIZE_CART_FLASH1M);
savedata = 0;
CircleBufferDeinit(&rumbleHistory);
}
size_t retro_serialize_size(void) {
@ -754,15 +762,11 @@ static void _setRumble(struct mRumble* rumble, int enable) {
if (!rumbleCallback) {
return;
}
rumbleLevel += enable;
if (CircleBufferSize(&rumbleHistory) == RUMBLE_PWM) {
int8_t oldLevel;
CircleBufferRead8(&rumbleHistory, &oldLevel);
rumbleLevel -= oldLevel;
if (enable) {
++rumbleUp;
} else {
++rumbleDown;
}
CircleBufferWrite8(&rumbleHistory, enable);
rumbleCallback(0, RETRO_RUMBLE_STRONG, rumbleLevel * 0xFFFF / RUMBLE_PWM);
rumbleCallback(0, RETRO_RUMBLE_WEAK, rumbleLevel * 0xFFFF / RUMBLE_PWM);
}
static void _updateLux(struct GBALuminanceSource* lux) {