CHANGES: Update for 0.10.1

CHANGES

@@ -1,3 +1,32 @@
+0.10.1: (2022-01-10)
+Emulation fixes:
+ - GB Audio: Fix channels 1/2 not playing when resetting volume (fixes mgba.io/i/2614)
+ - GB Audio: Fix channel 3 volume being changed between samples (fixes mgba.io/i/1896)
+ - GB Audio: Fix up boot sequence
+ - GB Audio: Fix updating channels other than 2 when writing NR5x
+ - GB BIOS: Include timing in degenerate ArcTan2 cases (fixes mgba.io/i/2763)
+ - GB Memory: Actually, HDMAs should start when LCD is off (fixes mgba.io/i/2662)
+ - GB Serialize: Don't write BGP/OBP when loading SCGB state (fixes mgba.io/i/2694)
+ - GB SIO: Further fix bidirectional transfer starting
+ - GBA: Fix resetting key IRQ state (fixes mgba.io/i/2716)
+ - GBA Video: Ignore disabled backgrounds as OBJ blend target (fixes mgba.io/i/2489)
+Other fixes:
+ - GBA: Fix forceskip BIOS logic for multiboot ROMs (fixes mgba.io/i/2753)
+ - GBA Cheats: Fix issues detecting unencrypted cheats (fixes mgba.io/i/2724)
+ - Qt: Manually split filename to avoid overzealous splitting (fixes mgba.io/i/2681)
+ - Qt: Fix scanning specific e-Reader dotcodes (fixes mgba.io/i/2693)
+ - Qt: Don't re-enable sync if GBA link modes aren't the same (fixes mgba.io/i/2044)
+ - Qt: Improve handling of multiplayer syncing (fixes mgba.io/i/2720)
+ - Qt: Fix initializing update revision info
+ - Qt: Redo stable branch detection heuristic (fixes mgba.io/i/2679)
+ - Res: Fix species name location in Ruby/Sapphire revs 1/2 (fixes mgba.io/i/2685)
+ - VFS: Fix minizip write returning 0 on success instead of size
+Misc:
+ - macOS: Add category to plist (closes mgba.io/i/2691)
+ - macOS: Fix modern build with libepoxy (fixes mgba.io/i/2700)
+ - Qt: Keep track of current palette preset name (fixes mgba.io/i/2680)
+ - Qt: Move OpenGL proxy onto its own thread (fixes mgba.io/i/2493)
+
 0.10.0: (2022-10-11)
 Features:
  - Preliminary Lua scripting support
@@ -6,7 +35,7 @@ Features:
  - Tool for converting scanned pictures of e-Reader cards to raw dotcode data
  - Options for muting when inactive, minimized, or for different players in multiplayer
  - Cheat code support in homebrew ports
- - Acclerometer and gyro support for controllers on PC
+ - Accelerometer and gyro support for controllers on PC
  - Support for combo "Super Game Boy Color" SGB + GBC ROM hacks
  - Improved support for HuC-3 mapper, including RTC
  - Support for 64 kiB SRAM saves used in some bootlegs
@@ -20,7 +49,7 @@ Emulation fixes:
  - ARM7: Fix unsigned multiply timing
  - GB: Copy logo from ROM if not running the BIOS intro (fixes mgba.io/i/2378)
  - GB: Fix HALT breaking M-cycle alignment (fixes mgba.io/i/250)
- - GB Audio: Fix channel 1/2 reseting edge cases (fixes mgba.io/i/1925)
+ - GB Audio: Fix channel 1/2 resetting edge cases (fixes mgba.io/i/1925)
  - GB Audio: Properly apply per-model audio differences
  - GB Audio: Revamp channel rendering
  - GB Audio: Fix APU re-enable timing glitch
@@ -130,7 +159,7 @@ Emulation fixes:
 Other fixes:
  - ARM Decoder: Fix decoding of lsl r0 (fixes mgba.io/i/2349)
  - FFmpeg: Don't attempt to use YUV 4:2:0 for lossless videos (fixes mgba.io/i/2084)
- - GB Video: Fix memory leak when reseting SGB games
+ - GB Video: Fix memory leak when resetting SGB games
  - GBA: Fix out of bounds ROM accesses on patched ROMs smaller than 32 MiB
  - GBA: Fix maximum tile ID in caching for 256-color modes
  - GBA Video: Fix cache updating with proxy and GL renderers
@@ -241,7 +270,7 @@ Emulation fixes:
  - GBA BIOS: Implement dummy sound driver calls
  - GBA BIOS: Improve HLE BIOS timing
  - GBA BIOS: Fix reloading video registers after reset (fixes mgba.io/i/1808)
- - GBA BIOS: Make HLE BIOS calls interruptable (fixes mgba.io/i/1711 and mgba.io/i/1823)
+ - GBA BIOS: Make HLE BIOS calls interruptible (fixes mgba.io/i/1711 and mgba.io/i/1823)
  - GBA BIOS: Fix invalid decompression bounds checking
  - GBA DMA: Linger last DMA on bus (fixes mgba.io/i/301 and mgba.io/i/1320)
  - GBA DMA: Fix ordering and timing of overlapping DMAs
@@ -257,7 +286,7 @@ Emulation fixes:
  - GBA Serialize: Fix alignment check when loading states
  - GBA SIO: Fix copying Normal mode transfer values
  - GBA SIO: Fix Normal mode being totally broken (fixes mgba.io/i/1800)
- - GBA SIO: Fix deseralizing SIO registers
+ - GBA SIO: Fix deserializing SIO registers
  - GBA SIO: Fix hanging on starting a second multiplayer window (fixes mgba.io/i/854)
  - GBA SIO: Fix Normal mode transfer start timing (fixes mgba.io/i/425)
  - GBA Timers: Fix toggling timer cascading while timer is active (fixes mgba.io/i/2043)

CMakeLists.txt

@@ -718,8 +718,12 @@ if (USE_LZMA)
 endif()
 
 if(USE_EPOXY)
-	list(APPEND FEATURE_SRC ${CMAKE_CURRENT_SOURCE_DIR}/src/platform/opengl/gl.c ${CMAKE_CURRENT_SOURCE_DIR}/src/platform/opengl/gles2.c)
+	if(NOT APPLE OR NOT MACOSX_SDK VERSION_GREATER 10.14)
-	list(APPEND FEATURE_DEFINES BUILD_GL BUILD_GLES2 BUILD_GLES3)
+		list(APPEND FEATURE_SRC ${CMAKE_CURRENT_SOURCE_DIR}/src/platform/opengl/gl.c)
+		list(APPEND FEATURE_DEFINES BUILD_GL)
+	endif()
+	list(APPEND FEATURE_SRC ${CMAKE_CURRENT_SOURCE_DIR}/src/platform/opengl/gles2.c)
+	list(APPEND FEATURE_DEFINES BUILD_GLES2 BUILD_GLES3)
 	list(APPEND FEATURES EPOXY)
 	include_directories(AFTER ${EPOXY_INCLUDE_DIRS})
 	link_directories(${EPOXY_LIBRARY_DIRS})

README.md

@@ -50,6 +50,7 @@ The following mappers are fully supported:
 - MBC2
 - MBC3
 - MBC3+RTC
+- MBC30
 - MBC5
 - MBC5+Rumble
 - MBC7

cinema/gba/blend/disabled-bg-semitrans-blend/config.ini

@@ -0,0 +1,3 @@
+[testinfo]
+skip=10
+frames=1

res/info.plist.in

@@ -56,5 +56,7 @@
 			<string>Viewer</string>
 		</dict>
 	</array>
+	<key>LSApplicationCategoryType</key>
+	<string>public.app-category.games</string>
 </dict>
 </plist>

res/scripts/pokemon.lua

@@ -412,6 +412,13 @@ local gameRubyEn = Generation3En:new{
 	_speciesNameTable=0x1f716c,
 }
 
+local gameRubyEnR1 = Generation3En:new{
+	name="Ruby (USA)",
+	_party=0x3004360,
+	_partyCount=0x3004350,
+	_speciesNameTable=0x1f7184,
+}
+
 local gameSapphireEn = Generation3En:new{
 	name="Sapphire (USA)",
 	_party=0x3004360,
@@ -419,6 +426,13 @@ local gameSapphireEn = Generation3En:new{
 	_speciesNameTable=0x1f70fc,
 }
 
+local gameSapphireEnR1 = Generation3En:new{
+	name="Sapphire (USA)",
+	_party=0x3004360,
+	_partyCount=0x3004350,
+	_speciesNameTable=0x1f7114,
+}
+
 local gameEmeraldEn = Generation3En:new{
 	name="Emerald (USA)",
 	_party=0x20244ec,
@@ -471,6 +485,10 @@ gameCrc32 = {
 	[0x7d527d62] = gameYellowEn,
 	[0x84ee4776] = gameFireRedEnR1,
 	[0xdaffecec] = gameLeafGreenEnR1,
+	[0x61641576] = gameRubyEnR1, -- Rev 1
+	[0xaeac73e6] = gameRubyEnR1, -- Rev 2
+	[0xbafedae5] = gameSapphireEnR1, -- Rev 1
+	[0x9cc4410e] = gameSapphireEnR1, -- Rev 2
 }
 
 function printPartyStatus(game, buffer)

src/feature/updater.c

@@ -78,14 +78,7 @@ static void _updateMatch(const char* key, const char* value, void* user) {
 		return;
 	}
 	const char* item = &key[dotLoc + 1];
-
+	_updateUpdate(match->out, item, value);
-	struct Table* out = user;
-	struct mUpdate* update = HashTableLookup(out, match->channel);
-	if (!update) {
-		update = calloc(1, sizeof(*update));
-		HashTableInsert(out, match->channel, update);
-	}
-	_updateUpdate(update, item, value);
 }
 
 bool mUpdaterInit(struct mUpdaterContext* context, const char* manifest) {

src/gb/audio.c

@@ -269,6 +269,29 @@ void GBAudioWriteNR31(struct GBAudio* audio, uint8_t value) {
 void GBAudioWriteNR32(struct GBAudio* audio, uint8_t value) {
 	GBAudioRun(audio, mTimingCurrentTime(audio->timing), 0x4);
 	audio->ch3.volume = GBAudioRegisterBankVolumeGetVolumeGB(value);
+
+	audio->ch3.sample = audio->ch3.wavedata8[audio->ch3.window >> 1];
+	if (!(audio->ch3.window & 1)) {
+		audio->ch3.sample >>= 4;
+	}
+	audio->ch3.sample &= 0xF;
+	int volume;
+	switch (audio->ch3.volume) {
+	case 0:
+		volume = 4;
+		break;
+	case 1:
+		volume = 0;
+		break;
+	case 2:
+		volume = 1;
+		break;
+	default:
+	case 3:
+		volume = 2;
+		break;
+	}
+	audio->ch3.sample >>= volume;
 }
 
 void GBAudioWriteNR33(struct GBAudio* audio, uint8_t value) {
@@ -377,13 +400,13 @@ void GBAudioWriteNR44(struct GBAudio* audio, uint8_t value) {
 }
 
 void GBAudioWriteNR50(struct GBAudio* audio, uint8_t value) {
-	GBAudioRun(audio, mTimingCurrentTime(audio->timing), 0x2);
+	GBAudioRun(audio, mTimingCurrentTime(audio->timing), 0xF);
 	audio->volumeRight = GBRegisterNR50GetVolumeRight(value);
 	audio->volumeLeft = GBRegisterNR50GetVolumeLeft(value);
 }
 
 void GBAudioWriteNR51(struct GBAudio* audio, uint8_t value) {
-	GBAudioRun(audio, mTimingCurrentTime(audio->timing), 0x2);
+	GBAudioRun(audio, mTimingCurrentTime(audio->timing), 0xF);
 	audio->ch1Right = GBRegisterNR51GetCh1Right(value);
 	audio->ch2Right = GBRegisterNR51GetCh2Right(value);
 	audio->ch3Right = GBRegisterNR51GetCh3Right(value);
@@ -476,11 +499,11 @@ void GBAudioRun(struct GBAudio* audio, int32_t timestamp, int channels) {
 	if (!audio->enable) {
 		return;
 	}
-	if (audio->p && channels != 0xF && timestamp - audio->lastSample > (int) (SAMPLE_INTERVAL * audio->timingFactor)) {
+	if (audio->p && channels != 0x1F && timestamp - audio->lastSample > (int) (SAMPLE_INTERVAL * audio->timingFactor)) {
 		GBAudioSample(audio, timestamp);
 	}
 
-	if (audio->playingCh1 && (channels & 0x1)) {
+	if (audio->playingCh1 && (channels & 0x1) && audio->ch1.envelope.dead != 2) {
 		int period = 4 * (2048 - audio->ch1.control.frequency) * audio->timingFactor;
 		int32_t diff = timestamp - audio->ch1.lastUpdate;
 		if (diff >= period) {
@@ -490,7 +513,7 @@ void GBAudioRun(struct GBAudio* audio, int32_t timestamp, int channels) {
 			_updateSquareSample(&audio->ch1);
 		}
 	}
-	if (audio->playingCh2 && (channels & 0x2)) {
+	if (audio->playingCh2 && (channels & 0x2) && audio->ch2.envelope.dead != 2) {
 		int period = 4 * (2048 - audio->ch2.control.frequency) * audio->timingFactor;
 		int32_t diff = timestamp - audio->ch2.lastUpdate;
 		if (diff >= period) {
@@ -756,7 +779,7 @@ void GBAudioSample(struct GBAudio* audio, int32_t timestamp) {
 	for (sample = audio->sampleIndex; timestamp >= interval && sample < GB_MAX_SAMPLES; ++sample, timestamp -= interval) {
 		int16_t sampleLeft = 0;
 		int16_t sampleRight = 0;
-		GBAudioRun(audio, sample * interval + audio->lastSample, 0xF);
+		GBAudioRun(audio, sample * interval + audio->lastSample, 0x1F);
 		GBAudioSamplePSG(audio, &sampleLeft, &sampleRight);
 		sampleLeft = (sampleLeft * audio->masterVolume * 6) >> 7;
 		sampleRight = (sampleRight * audio->masterVolume * 6) >> 7;
@@ -863,7 +886,7 @@ bool _writeEnvelope(struct GBAudioEnvelope* envelope, uint8_t value, enum GBAudi
 		envelope->currentVolume &= 0xF;
 	}
 	_updateEnvelopeDead(envelope);
-	return (envelope->initialVolume || envelope->direction) && envelope->dead != 2;
+	return envelope->initialVolume || envelope->direction;
 }
 
 static void _updateSquareSample(struct GBAudioSquareChannel* ch) {

src/gb/gb.c

@@ -596,13 +596,13 @@ void GBReset(struct SM83Core* cpu) {
 	GBVideoReset(&gb->video);
 	GBTimerReset(&gb->timer);
 	GBIOReset(gb);
+	GBAudioReset(&gb->audio);
 	if (!gb->biosVf && gb->memory.rom) {
 		GBSkipBIOS(gb);
 	} else {
 		mTimingSchedule(&gb->timing, &gb->timer.event, 0);
 	}
 
-	GBAudioReset(&gb->audio);
 	GBSIOReset(&gb->sio);
 
 	cpu->memory.setActiveRegion(cpu, cpu->pc);
@@ -744,6 +744,25 @@ void GBSkipBIOS(struct GB* gb) {
 		GBUnmapBIOS(gb);
 	}
 
+	GBIOWrite(gb, GB_REG_NR52, 0xF1);
+	GBIOWrite(gb, GB_REG_NR14, 0x3F);
+	GBIOWrite(gb, GB_REG_NR10, 0x80);
+	GBIOWrite(gb, GB_REG_NR11, 0xBF);
+	GBIOWrite(gb, GB_REG_NR12, 0xF3);
+	GBIOWrite(gb, GB_REG_NR13, 0xF3);
+	GBIOWrite(gb, GB_REG_NR24, 0x3F);
+	GBIOWrite(gb, GB_REG_NR21, 0x3F);
+	GBIOWrite(gb, GB_REG_NR22, 0x00);
+	GBIOWrite(gb, GB_REG_NR34, 0x3F);
+	GBIOWrite(gb, GB_REG_NR30, 0x7F);
+	GBIOWrite(gb, GB_REG_NR31, 0xFF);
+	GBIOWrite(gb, GB_REG_NR32, 0x9F);
+	GBIOWrite(gb, GB_REG_NR44, 0x3F);
+	GBIOWrite(gb, GB_REG_NR41, 0xFF);
+	GBIOWrite(gb, GB_REG_NR42, 0x00);
+	GBIOWrite(gb, GB_REG_NR43, 0x00);
+	GBIOWrite(gb, GB_REG_NR50, 0x77);
+	GBIOWrite(gb, GB_REG_NR51, 0xF3);
 	GBIOWrite(gb, GB_REG_LCDC, 0x91);
 	gb->memory.io[GB_REG_BANK] = 0x1;
 	GBVideoSkipBIOS(&gb->video);

src/gb/io.c

@@ -162,36 +162,7 @@ void GBIOReset(struct GB* gb) {
 	GBIOWrite(gb, GB_REG_TMA, 0);
 	GBIOWrite(gb, GB_REG_TAC, 0);
 	GBIOWrite(gb, GB_REG_IF, 1);
-	gb->audio.playingCh1 = false;
-	gb->audio.playingCh2 = false;
-	gb->audio.playingCh3 = false;
-	gb->audio.playingCh4 = false;
-	GBIOWrite(gb, GB_REG_NR52, 0xF1);
-	GBIOWrite(gb, GB_REG_NR14, 0x3F);
-	GBIOWrite(gb, GB_REG_NR10, 0x80);
-	GBIOWrite(gb, GB_REG_NR11, 0xBF);
-	GBIOWrite(gb, GB_REG_NR12, 0xF3);
-	GBIOWrite(gb, GB_REG_NR13, 0xF3);
-	GBIOWrite(gb, GB_REG_NR24, 0x3F);
-	GBIOWrite(gb, GB_REG_NR21, 0x3F);
-	GBIOWrite(gb, GB_REG_NR22, 0x00);
-	GBIOWrite(gb, GB_REG_NR34, 0x3F);
-	GBIOWrite(gb, GB_REG_NR30, 0x7F);
-	GBIOWrite(gb, GB_REG_NR31, 0xFF);
-	GBIOWrite(gb, GB_REG_NR32, 0x9F);
-	GBIOWrite(gb, GB_REG_NR44, 0x3F);
-	GBIOWrite(gb, GB_REG_NR41, 0xFF);
-	GBIOWrite(gb, GB_REG_NR42, 0x00);
-	GBIOWrite(gb, GB_REG_NR43, 0x00);
-	GBIOWrite(gb, GB_REG_NR50, 0x77);
-	GBIOWrite(gb, GB_REG_NR51, 0xF3);
-	if (!gb->biosVf) {
-		GBIOWrite(gb, GB_REG_LCDC, 0x91);
-		gb->memory.io[GB_REG_BANK] = 1;
-	} else {
 	GBIOWrite(gb, GB_REG_LCDC, 0x00);
-		gb->memory.io[GB_REG_BANK] = 0xFF;
-	}
 	GBIOWrite(gb, GB_REG_SCY, 0x00);
 	GBIOWrite(gb, GB_REG_SCX, 0x00);
 	GBIOWrite(gb, GB_REG_LYC, 0x00);
@@ -203,6 +174,7 @@ void GBIOReset(struct GB* gb) {
 	}
 	GBIOWrite(gb, GB_REG_WY, 0x00);
 	GBIOWrite(gb, GB_REG_WX, 0x00);
+	gb->memory.io[GB_REG_BANK] = 0xFF;
 	if (gb->model & GB_MODEL_CGB) {
 		GBIOWrite(gb, GB_REG_KEY0, 0);
 		GBIOWrite(gb, GB_REG_JOYP, 0xFF);
@@ -754,7 +726,7 @@ void GBIODeserialize(struct GB* gb, const struct GBSerializedState* state) {
 	gb->video.renderer->writeVideoRegister(gb->video.renderer, GB_REG_SCX, state->io[GB_REG_SCX]);
 	gb->video.renderer->writeVideoRegister(gb->video.renderer, GB_REG_WY, state->io[GB_REG_WY]);
 	gb->video.renderer->writeVideoRegister(gb->video.renderer, GB_REG_WX, state->io[GB_REG_WX]);
-	if (gb->model & GB_MODEL_SGB) {
+	if (gb->model == GB_MODEL_SGB) {
 		gb->video.renderer->writeVideoRegister(gb->video.renderer, GB_REG_BGP, state->io[GB_REG_BGP]);
 		gb->video.renderer->writeVideoRegister(gb->video.renderer, GB_REG_OBP0, state->io[GB_REG_OBP0]);
 		gb->video.renderer->writeVideoRegister(gb->video.renderer, GB_REG_OBP1, state->io[GB_REG_OBP1]);

src/gb/memory.c

@@ -558,7 +558,7 @@ uint8_t GBMemoryWriteHDMA5(struct GB* gb, uint8_t value) {
 	gb->memory.hdmaDest |= 0x8000;
 	bool wasHdma = gb->memory.isHdma;
 	gb->memory.isHdma = value & 0x80;
-	if ((!wasHdma && !gb->memory.isHdma) || (GBRegisterLCDCIsEnable(gb->memory.io[GB_REG_LCDC]) && gb->video.mode == 0)) {
+	if ((!wasHdma && !gb->memory.isHdma) || gb->video.mode == 0) {
 		if (gb->memory.isHdma) {
 			gb->memory.hdmaRemaining = 0x10;
 		} else {
@@ -566,8 +566,6 @@ uint8_t GBMemoryWriteHDMA5(struct GB* gb, uint8_t value) {
 		}
 		gb->cpuBlocked = true;
 		mTimingSchedule(&gb->timing, &gb->memory.hdmaEvent, 0);
-	} else if (gb->memory.isHdma && !GBRegisterLCDCIsEnable(gb->memory.io[GB_REG_LCDC])) {
-		return 0x80 | ((value + 1) & 0x7F);
 	}
 	return value & 0x7F;
 }

src/gb/sio/lockstep.c

@@ -157,7 +157,7 @@ static int32_t _masterUpdate(struct GBSIOLockstepNode* node) {
 		}
 	}
 	// Tell the other GBs they can continue up to where we were
-	node->p->d.addCycles(&node->p->d, node->id, node->eventDiff);
+	node->p->d.addCycles(&node->p->d, 0, node->eventDiff);
 #ifndef NDEBUG
 	node->phase = node->p->d.transferActive;
 #endif
@@ -169,26 +169,28 @@ static int32_t _masterUpdate(struct GBSIOLockstepNode* node) {
 
 static uint32_t _slaveUpdate(struct GBSIOLockstepNode* node) {
 	enum mLockstepPhase transferActive;
+	int id;
 
 	ATOMIC_LOAD(transferActive, node->p->d.transferActive);
+	ATOMIC_LOAD(id, node->id);
 
 	bool signal = false;
 	switch (transferActive) {
 	case TRANSFER_IDLE:
-		node->p->d.addCycles(&node->p->d, node->id, LOCKSTEP_INCREMENT);
+		node->p->d.addCycles(&node->p->d, id, LOCKSTEP_INCREMENT);
 		break;
 	case TRANSFER_STARTING:
 	case TRANSFER_FINISHING:
 		break;
 	case TRANSFER_STARTED:
-		if (node->p->d.unusedCycles(&node->p->d, node->id) > node->eventDiff) {
+		if (node->p->d.unusedCycles(&node->p->d, id) > node->eventDiff) {
 			break;
 		}
 		node->transferFinished = false;
 		signal = true;
 		break;
 	case TRANSFER_FINISHED:
-		if (node->p->d.unusedCycles(&node->p->d, node->id) > node->eventDiff) {
+		if (node->p->d.unusedCycles(&node->p->d, id) > node->eventDiff) {
 			break;
 		}
 		_finishTransfer(node);
@@ -199,7 +201,7 @@ static uint32_t _slaveUpdate(struct GBSIOLockstepNode* node) {
 	node->phase = node->p->d.transferActive;
 #endif
 	if (signal) {
-		node->p->d.signal(&node->p->d, 1 << node->id);
+		node->p->d.signal(&node->p->d, 1 << id);
 	}
 	return 0;
 }
@@ -215,11 +217,13 @@ static void _GBSIOLockstepNodeProcessEvents(struct mTiming* timing, void* user,
 	int32_t cycles = 0;
 	node->nextEvent -= cyclesLate;
 	if (node->nextEvent <= 0) {
-		if (!node->id) {
+		int id;
+		ATOMIC_LOAD(id, node->id);
+		if (!id) {
 			cycles = _masterUpdate(node);
 		} else {
 			cycles = _slaveUpdate(node);
-			cycles += node->p->d.useCycles(&node->p->d, node->id, node->eventDiff);
+			cycles += node->p->d.useCycles(&node->p->d, id, node->eventDiff);
 		}
 		node->eventDiff = 0;
 	} else {
@@ -240,7 +244,9 @@ static void _GBSIOLockstepNodeProcessEvents(struct mTiming* timing, void* user,
 
 static void GBSIOLockstepNodeWriteSB(struct GBSIODriver* driver, uint8_t value) {
 	struct GBSIOLockstepNode* node = (struct GBSIOLockstepNode*) driver;
-	node->p->pendingSB[node->id] = value;
+	int id;
+	ATOMIC_LOAD(id, node->id);
+	node->p->pendingSB[id] = value;
 }
 
 static uint8_t GBSIOLockstepNodeWriteSC(struct GBSIODriver* driver, uint8_t value) {
@@ -252,11 +258,17 @@ static uint8_t GBSIOLockstepNodeWriteSC(struct GBSIODriver* driver, uint8_t valu
 		mLockstepLock(&node->p->d);
 		bool claimed = false;
 		if (ATOMIC_CMPXCHG(node->p->masterClaimed, claimed, true)) {
-			if (node->id != 0) {
+			int id;
+			ATOMIC_LOAD(id, node->id);
+			if (id != 0) {
+				unsigned sb;
 				node->p->players[0]->id = 1;
-				node->p->players[1] = node->p->players[0];
-				node->p->players[0] = node->p->players[1];
 				node->id = 0;
+				node->p->players[1] = node->p->players[0];
+				node->p->players[0] = node;
+				sb = node->p->pendingSB[0];
+				node->p->pendingSB[0] = node->p->pendingSB[1];
+				node->p->pendingSB[1] = sb;
 			}
 			ATOMIC_STORE(node->p->d.transferActive, TRANSFER_STARTING);
 			ATOMIC_STORE(node->p->d.transferCycles, GBSIOCyclesPerTransfer[(value >> 1) & 1]);

src/gba/bios.c

@@ -336,12 +336,14 @@ static int16_t _ArcTan(int32_t i, int32_t* r1, int32_t* r3, uint32_t* cycles) {
 
 static int16_t _ArcTan2(int32_t x, int32_t y, int32_t* r1, uint32_t* cycles) {
 	if (!y) {
+		*cycles = 11;
 		if (x >= 0) {
 			return 0;
 		}
 		return 0x8000;
 	}
 	if (!x) {
+		*cycles = 11;
 		if (y >= 0) {
 			return 0x4000;
 		}

src/gba/cheats.c

@@ -126,13 +126,13 @@ static bool GBACheatAddAutodetect(struct GBACheatSet* set, uint32_t op1, uint32_
 			GBACheatSetGameSharkVersion(set, GBA_GS_PARV3);
 		}
 
-		rgsaP = GBACheatGameSharkProbability(op1, op1);
+		rgsaP = GBACheatGameSharkProbability(op1, op2);
 		if (rgsaP > maxProbability) {
 			maxProbability = rgsaP;
 			GBACheatSetGameSharkVersion(set, GBA_GS_GSAV1_RAW);
 		}
 
-		rparP = GBACheatProActionReplayProbability(op1, op1);
+		rparP = GBACheatProActionReplayProbability(op1, op2);
 		if (rparP > maxProbability) {
 			maxProbability = rparP;
 			GBACheatSetGameSharkVersion(set, GBA_GS_PARV3_RAW);

src/gba/core.c

@@ -700,8 +700,8 @@ static void _GBACoreReset(struct mCore* core) {
 #endif
 
 	ARMReset(core->cpu);
-	bool forceSkip = gba->romVf && GBAIsMB(gba->romVf);
+	bool forceSkip = gba->mbVf || core->opts.skipBios;
-	if (!(forceSkip || core->opts.skipBios) && (gba->romVf || gba->memory.rom) && gba->pristineRomSize >= 0xA0 && gba->biosVf) {
+	if (!forceSkip && (gba->romVf || gba->memory.rom) && gba->pristineRomSize >= 0xA0 && gba->biosVf) {
 		uint32_t crc = doCrc32(&gba->memory.rom[1], 0x9C);
 		if (crc != LOGO_CRC32) {
 			mLOG(STATUS, WARN, "Invalid logo, skipping BIOS");
@@ -709,7 +709,7 @@ static void _GBACoreReset(struct mCore* core) {
 		}
 	}
 
-	if (forceSkip || (core->opts.skipBios && (gba->romVf || gba->memory.rom))) {
+	if (forceSkip) {
 		GBASkipBIOS(core->board);
 	}
 

src/gba/gba.c

@@ -213,6 +213,7 @@ void GBAReset(struct ARMCore* cpu) {
 	gba->earlyExit = false;
 	gba->dmaPC = 0;
 	gba->biosStall = 0;
+	gba->keysLast = 0x400;
 	if (gba->yankedRomSize) {
 		gba->memory.romSize = gba->yankedRomSize;
 		gba->memory.romMask = toPow2(gba->memory.romSize) - 1;
@@ -274,8 +275,10 @@ void GBASkipBIOS(struct GBA* gba) {
 	if (cpu->gprs[ARM_PC] == BASE_RESET + WORD_SIZE_ARM) {
 		if (gba->memory.rom) {
 			cpu->gprs[ARM_PC] = BASE_CART0;
-		} else {
+		} else if (gba->memory.wram[0x30]) {
 			cpu->gprs[ARM_PC] = BASE_WORKING_RAM + 0xC0;
+		} else {
+			cpu->gprs[ARM_PC] = BASE_WORKING_RAM;
 		}
 		gba->video.vcount = 0x7E;
 		gba->memory.io[REG_VCOUNT >> 1] = 0x7E;

src/gba/renderers/gl.c

@@ -664,11 +664,13 @@ static const char* const _finalize =
 	"	if (((topFlags.y & 13) == 5 || topFlags.w > 0) && (bottomFlags.y & 2) == 2) {\n"
 	"		topPixel.rgb *= float(topFlags.z) / 16.;\n"
 	"		topPixel.rgb += bottomPixel.rgb * float(windowFlags.y) / 16.;\n"
-	"	} else if ((topFlags.y & 13) == 9) {\n"
+	"	} else if (topFlags.w == 0) { \n"
+	"		if ((topFlags.y & 13) == 9) {\n"
 	"			topPixel.rgb += (1. - topPixel.rgb) * float(windowFlags.z) / 16.;\n"
 	"		} else if ((topFlags.y & 13) == 13) {\n"
 	"			topPixel.rgb -= topPixel.rgb * float(windowFlags.z) / 16.;\n"
 	"		}\n"
+	"	}\n"
 	"	color = topPixel;\n"
 	"}";
 

src/gba/renderers/software-obj.c

@@ -169,10 +169,10 @@ int GBAVideoSoftwareRendererPreprocessSprite(struct GBAVideoSoftwareRenderer* re
 	              (renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN);
 	if (GBAObjAttributesAGetMode(sprite->a) == OBJ_MODE_SEMITRANSPARENT || (renderer->target1Obj && renderer->blendEffect == BLEND_ALPHA) || objwinSlowPath) {
 		int target2 = renderer->target2Bd;
-		target2 |= renderer->bg[0].target2;
+		target2 |= renderer->bg[0].target2 && renderer->bg[0].enabled;
-		target2 |= renderer->bg[1].target2;
+		target2 |= renderer->bg[1].target2 && renderer->bg[1].enabled;
-		target2 |= renderer->bg[2].target2;
+		target2 |= renderer->bg[2].target2 && renderer->bg[2].enabled;
-		target2 |= renderer->bg[3].target2;
+		target2 |= renderer->bg[3].target2 && renderer->bg[3].enabled;
 		if (target2) {
 			renderer->forceTarget1 = true;
 			flags |= FLAG_REBLEND;

src/platform/qt/ApplicationUpdater.cpp

@@ -7,6 +7,7 @@
 
 #include <QDir>
 #include <QFileInfo>
+#include <QRegularExpression>
 
 #include "ApplicationUpdatePrompt.h"
 #include "ConfigController.h"
@@ -71,9 +72,10 @@ QStringList ApplicationUpdater::listChannels() {
 }
 
 QString ApplicationUpdater::currentChannel() {
-	QLatin1String version(projectVersion);
+	QString version(projectVersion);
-	QLatin1String branch(gitBranch);
+	QString branch(gitBranch);
-	if (branch == QLatin1String("heads/") + version) {
+	QRegularExpression stable("^(?:(?:refs/)?(?:tags|heads)/)?[0-9]+\\.[0-9]+\\.[0-9]+$");
+	if (branch.contains(stable) || (branch == "(unknown)" && version.contains(stable))) {
 		return QLatin1String("stable");
 	} else {
 		return QLatin1String("dev");
@@ -137,7 +139,15 @@ QUrl ApplicationUpdater::parseManifest(const QByteArray& manifest) {
 QString ApplicationUpdater::destination() const {
 	QFileInfo path(updateInfo().url.path());
 	QDir dir(ConfigController::configDir());
-	return dir.filePath(QLatin1String("update.") + path.completeSuffix());
+	// QFileInfo::completeSuffix will eat all .'s in the filename...including
+	// ones in the version string, turning mGBA-1.0.0-win32.7z into
+	// 0.0-win32.7z instead of the intended .7z
+	// As a result, so we have to split out the complete suffix manually.
+	QString suffix(path.suffix());
+	if (path.completeBaseName().endsWith(".tar")) {
+		suffix = "tar." + suffix;
+	}
+	return dir.filePath(QLatin1String("update.") + suffix);
 }
 
 const char* ApplicationUpdater::platform() {
@@ -166,7 +176,8 @@ const char* ApplicationUpdater::platform() {
 }
 
 ApplicationUpdater::UpdateInfo::UpdateInfo(const QString& prefix, const mUpdate* update)
-	: size(update->size)
+	: rev(-1)
+	, size(update->size)
 	, url(prefix + update->path)
 {
 	if (update->rev > 0) {

src/platform/qt/CMakeLists.txt

@@ -118,6 +118,7 @@ set(SOURCE_FILES
 	MessagePainter.cpp
 	MultiplayerController.cpp
 	ObjView.cpp
+	OpenGLBug.cpp
 	OverrideView.cpp
 	PaletteView.cpp
 	PlacementControl.cpp

src/platform/qt/CoreController.cpp

@@ -914,7 +914,10 @@ void CoreController::scanCard(const QString& path) {
 		if (!file.open(QIODevice::ReadOnly)) {
 			return;
 		}
-		m_eReaderData = file.read(2912);
+		QByteArray eReaderData = file.read(2912);
+		if (eReaderData.isEmpty()) {
+			return;
+		}
 
 		file.seek(0);
 		QStringList lines;
@@ -936,6 +939,7 @@ void CoreController::scanCard(const QString& path) {
 			}
 		}
 		scanCards(lines);
+		m_eReaderData = eReaderData;
 	} else if (image.size() == QSize(989, 44) || image.size() == QSize(639, 44)) {
 		const uchar* bits = image.constBits();
 		size_t size;

src/platform/qt/DisplayGL.cpp

@@ -44,6 +44,8 @@ using QOpenGLFunctions_Baseline = QOpenGLFunctions_3_2_Core;
 #define OVERHEAD_NSEC 300000
 #endif
 
+#include "OpenGLBug.h"
+
 using namespace QGBA;
 
 QHash<QSurfaceFormat, bool> DisplayGL::s_supports;
@@ -175,6 +177,11 @@ DisplayGL::DisplayGL(const QSurfaceFormat& format, QWidget* parent)
 	m_drawThread.setObjectName("Painter Thread");
 	m_painter->setThread(&m_drawThread);
 
+	m_proxyThread.setObjectName("OpenGL Proxy Thread");
+	m_proxyContext = std::make_unique<QOpenGLContext>();
+	m_proxyContext->setFormat(format);
+	connect(m_painter.get(), &PainterGL::created, this, &DisplayGL::setupProxyThread);
+
 	connect(&m_drawThread, &QThread::started, m_painter.get(), &PainterGL::create);
 	connect(m_painter.get(), &PainterGL::started, this, [this] {
 		m_hasStarted = true;
@@ -189,6 +196,11 @@ DisplayGL::~DisplayGL() {
 	QMetaObject::invokeMethod(m_painter.get(), "destroy", Qt::BlockingQueuedConnection);
 	m_drawThread.exit();
 	m_drawThread.wait();
+
+	if (m_proxyThread.isRunning()) {
+		m_proxyThread.exit();
+		m_proxyThread.wait();
+	}
 }
 
 bool DisplayGL::supportsShaders() const {
@@ -209,9 +221,6 @@ void DisplayGL::startDrawing(std::shared_ptr<CoreController> controller) {
 	m_painter->setContext(controller);
 	m_painter->setMessagePainter(messagePainter());
 	m_context = controller;
-	if (videoProxy()) {
-		videoProxy()->moveToThread(&m_drawThread);
-	}
 
 	lockAspectRatio(isAspectRatioLocked());
 	lockIntegerScaling(isIntegerScalingLocked());
@@ -411,11 +420,34 @@ bool DisplayGL::shouldDisableUpdates() {
 void DisplayGL::setVideoProxy(std::shared_ptr<VideoProxy> proxy) {
 	Display::setVideoProxy(proxy);
 	if (proxy) {
-		proxy->moveToThread(&m_drawThread);
+		proxy->moveToThread(&m_proxyThread);
 	}
 	m_painter->setVideoProxy(proxy);
 }
 
+void DisplayGL::setupProxyThread() {
+	m_proxyContext->moveToThread(&m_proxyThread);
+	m_proxySurface.create();
+	connect(&m_proxyThread, &QThread::started, m_proxyContext.get(), [this]() {
+		m_proxyContext->setShareContext(m_painter->shareContext());
+		m_proxyContext->create();
+		m_proxyContext->makeCurrent(&m_proxySurface);
+#if defined(_WIN32) && defined(USE_EPOXY)
+		epoxy_handle_external_wglMakeCurrent();
+#endif
+	});
+	connect(m_painter.get(), &PainterGL::texSwapped, m_proxyContext.get(), [this]() {
+		if (!m_context->hardwareAccelerated()) {
+			return;
+		}
+		if (videoProxy()) {
+			videoProxy()->processData();
+		}
+		m_painter->updateFramebufferHandle();
+	}, Qt::BlockingQueuedConnection);
+	m_proxyThread.start();
+}
+
 int DisplayGL::framebufferHandle() {
 	return m_painter->glTex();
 }
@@ -481,9 +513,15 @@ void PainterGL::create() {
 
 #if defined(BUILD_GLES2) || defined(BUILD_GLES3)
 	if (m_supportsShaders) {
+		QOpenGLFunctions_Baseline* fn = m_gl->versionFunctions<QOpenGLFunctions_Baseline>();
 		gl2Backend = static_cast<mGLES2Context*>(malloc(sizeof(mGLES2Context)));
 		mGLES2ContextCreate(gl2Backend);
 		m_backend = &gl2Backend->d;
+		fn->glGenTextures(m_bridgeTexes.size(), m_bridgeTexes.data());
+		for (auto tex : m_bridgeTexes) {
+			m_freeTex.enqueue(tex);
+		}
+		m_bridgeTexIn = m_freeTex.dequeue();
 	}
 #endif
 
@@ -503,10 +541,10 @@ void PainterGL::create() {
 		painter->makeCurrent();
 
 #if defined(BUILD_GLES2) || defined(BUILD_GLES3)
+		mGLES2Context* gl2Backend = reinterpret_cast<mGLES2Context*>(painter->m_backend);
 		if (painter->m_widget && painter->supportsShaders()) {
 			QOpenGLFunctions_Baseline* fn = painter->m_gl->versionFunctions<QOpenGLFunctions_Baseline>();
 			fn->glFinish();
-			mGLES2Context* gl2Backend = reinterpret_cast<mGLES2Context*>(painter->m_backend);
 			painter->m_widget->setTex(painter->m_finalTex[painter->m_finalTexIdx]);
 			painter->m_finalTexIdx ^= 1;
 			gl2Backend->finalShader.tex = painter->m_finalTex[painter->m_finalTexIdx];
@@ -540,6 +578,9 @@ void PainterGL::create() {
 	m_backend->filter = false;
 	m_backend->lockAspectRatio = false;
 	m_backend->interframeBlending = false;
+	m_gl->doneCurrent();
+
+	emit created();
 }
 
 void PainterGL::destroy() {
@@ -548,9 +589,11 @@ void PainterGL::destroy() {
 	}
 	makeCurrent();
 #if defined(BUILD_GLES2) || defined(BUILD_GLES3)
+	QOpenGLFunctions_Baseline* fn = m_gl->versionFunctions<QOpenGLFunctions_Baseline>();
 	if (m_shader.passes) {
 		mGLES2ShaderFree(&m_shader);
 	}
+	fn->glDeleteTextures(m_bridgeTexes.size(), m_bridgeTexes.data());
 #endif
 	m_backend->deinit(m_backend);
 	m_gl->doneCurrent();
@@ -627,8 +670,20 @@ void PainterGL::filter(bool filter) {
 	}
 }
 
+#ifndef GL_DEBUG_OUTPUT_SYNCHRONOUS
+#define GL_DEBUG_OUTPUT_SYNCHRONOUS 0x8242
+#endif
+
 void PainterGL::start() {
 	makeCurrent();
+#if defined(BUILD_GLES3) && !defined(Q_OS_MAC)
+	if (glContextHasBug(OpenGLBug::GLTHREAD_BLOCKS_SWAP)) {
+		// Suggested on Discord as a way to strongly hint that glthread should be disabled
+		// See https://gitlab.freedesktop.org/mesa/mesa/-/issues/8035
+		QOpenGLFunctions_Baseline* fn = m_gl->versionFunctions<QOpenGLFunctions_Baseline>();
+		fn->glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
+	}
+#endif
 
 #if defined(BUILD_GLES2) || defined(BUILD_GLES3)
 	if (m_supportsShaders && m_shader.passes) {
@@ -636,6 +691,7 @@ void PainterGL::start() {
 	}
 #endif
 	resizeContext();
+	m_context->addFrameAction(std::bind(&PainterGL::swapTex, this));
 
 	m_buffer = nullptr;
 	m_active = true;
@@ -644,7 +700,7 @@ void PainterGL::start() {
 }
 
 void PainterGL::draw() {
-	if (!m_started || m_queue.isEmpty()) {
+	if (!m_started || (m_queue.isEmpty() && m_queueTex.isEmpty())) {
 		return;
 	}
 
@@ -671,7 +727,7 @@ void PainterGL::draw() {
 		return;
 	}
 	dequeue();
-	bool forceRedraw = !m_videoProxy;
+	bool forceRedraw = true;
 	if (!m_delayTimer.isValid()) {
 		m_delayTimer.start();
 	} else {
@@ -725,11 +781,6 @@ void PainterGL::doStop() {
 			m_videoProxy->processData();
 		}
 	}
-	if (m_videoProxy) {
-		m_videoProxy->reset();
-		m_videoProxy->moveToThread(m_window->thread());
-		m_videoProxy.reset();
-	}
 	m_backend->clear(m_backend);
 	m_backend->swap(m_backend);
 }
@@ -759,9 +810,11 @@ void PainterGL::performDraw() {
 }
 
 void PainterGL::enqueue(const uint32_t* backing) {
+	if (!backing) {
+		return;
+	}
 	QMutexLocker locker(&m_mutex);
 	uint32_t* buffer = nullptr;
-	if (backing) {
 	if (m_free.isEmpty()) {
 		buffer = m_queue.dequeue();
 	} else {
@@ -771,26 +824,46 @@ void PainterGL::enqueue(const uint32_t* backing) {
 		QSize size = m_context->screenDimensions();
 		memcpy(buffer, backing, size.width() * size.height() * BYTES_PER_PIXEL);
 	}
-	}
 	m_queue.enqueue(buffer);
 }
 
+void PainterGL::enqueue(GLuint tex) {
+	QMutexLocker locker(&m_mutex);
+	if (m_freeTex.isEmpty()) {
+		m_bridgeTexIn = m_queueTex.dequeue();
+	} else {
+		m_bridgeTexIn = m_freeTex.takeLast();
+	}
+	m_queueTex.enqueue(tex);
+}
+
 void PainterGL::dequeue() {
 	QMutexLocker locker(&m_mutex);
-	if (m_queue.isEmpty()) {
+	if (!m_queue.isEmpty()) {
-		return;
-	}
 		uint32_t* buffer = m_queue.dequeue();
 		if (m_buffer) {
 			m_free.append(m_buffer);
-		m_buffer = nullptr;
 		}
 		m_buffer = buffer;
+	}
+
+	if (!m_queueTex.isEmpty()) {
+		if (m_bridgeTexOut != std::numeric_limits<GLuint>::max()) {
+			m_freeTex.enqueue(m_bridgeTexOut);
+		}
+		m_bridgeTexOut = m_queueTex.dequeue();
+#if defined(BUILD_GLES2) || defined(BUILD_GLES3)
+		if (supportsShaders()) {
+			mGLES2Context* gl2Backend = reinterpret_cast<mGLES2Context*>(m_backend);
+			gl2Backend->tex = m_bridgeTexOut;
+		}
+#endif
+	}
 }
 
 void PainterGL::dequeueAll(bool keep) {
 	QMutexLocker locker(&m_mutex);
-	uint32_t* buffer = 0;
+	uint32_t* buffer = nullptr;
 	while (!m_queue.isEmpty()) {
 		buffer = m_queue.dequeue();
 		if (keep) {
@@ -806,6 +879,19 @@ void PainterGL::dequeueAll(bool keep) {
 		m_free.append(m_buffer);
 		m_buffer = nullptr;
 	}
+
+	m_queueTex.clear();
+	m_freeTex.clear();
+	for (auto tex : m_bridgeTexes) {
+		if (keep && tex == m_bridgeTexIn) {
+			continue;
+		}
+		m_freeTex.enqueue(tex);
+	}
+	if (!keep) {
+		m_bridgeTexIn = m_freeTex.dequeue();
+		m_bridgeTexOut = std::numeric_limits<GLuint>::max();
+	}
 }
 
 void PainterGL::setVideoProxy(std::shared_ptr<VideoProxy> proxy) {
@@ -821,12 +907,20 @@ void PainterGL::setShaders(struct VDir* dir) {
 		return;
 	}
 #if defined(BUILD_GLES2) || defined(BUILD_GLES3)
+	if (!m_started) {
+		makeCurrent();
+	}
+
 	if (m_shader.passes) {
 		mGLES2ShaderDetach(reinterpret_cast<mGLES2Context*>(m_backend));
 		mGLES2ShaderFree(&m_shader);
 	}
 	mGLES2ShaderLoad(&m_shader, dir);
 	mGLES2ShaderAttach(reinterpret_cast<mGLES2Context*>(m_backend), static_cast<mGLES2Shader*>(m_shader.passes), m_shader.nPasses);
+
+	if (!m_started) {
+		m_gl->doneCurrent();
+	}
 #endif
 }
 
@@ -835,10 +929,18 @@ void PainterGL::clearShaders() {
 		return;
 	}
 #if defined(BUILD_GLES2) || defined(BUILD_GLES3)
+	if (!m_started) {
+		makeCurrent();
+	}
+
 	if (m_shader.passes) {
 		mGLES2ShaderDetach(reinterpret_cast<mGLES2Context*>(m_backend));
 		mGLES2ShaderFree(&m_shader);
 	}
+
+	if (!m_started) {
+		m_gl->doneCurrent();
+	}
 #endif
 }
 
@@ -861,4 +963,39 @@ int PainterGL::glTex() {
 #endif
 }
 
+QOpenGLContext* PainterGL::shareContext() {
+	if (m_widget) {
+		return m_widget->context();
+	} else {
+		return m_gl.get();
+	}
+}
+
+void PainterGL::updateFramebufferHandle() {
+	QOpenGLFunctions_Baseline* fn = m_gl->versionFunctions<QOpenGLFunctions_Baseline>();
+	// TODO: Figure out why glFlush doesn't work here on Intel/Windows
+	if (glContextHasBug(OpenGLBug::CROSS_THREAD_FLUSH)) {
+		fn->glFinish();
+	} else {
+		fn->glFlush();
+	}
+
+	CoreController::Interrupter interrupter(m_context);
+	if (!m_context->hardwareAccelerated()) {
+		return;
+	}
+	enqueue(m_bridgeTexIn);
+	m_context->setFramebufferHandle(m_bridgeTexIn);
+}
+
+void PainterGL::swapTex() {
+	if (!m_started) {
+		return;
+	}
+
+	CoreController::Interrupter interrupter(m_context);
+	emit texSwapped();
+	m_context->addFrameAction(std::bind(&PainterGL::swapTex, this));
+}
+
 #endif

src/platform/qt/DisplayGL.h

@@ -112,6 +112,9 @@ protected:
 	virtual void paintEvent(QPaintEvent*) override { forceDraw(); }
 	virtual void resizeEvent(QResizeEvent*) override;
 
+private slots:
+	void setupProxyThread();
+
 private:
 	void resizePainter();
 	bool shouldDisableUpdates();
@@ -122,8 +125,11 @@ private:
 	bool m_hasStarted = false;
 	std::unique_ptr<PainterGL> m_painter;
 	QThread m_drawThread;
+	QThread m_proxyThread;
 	std::shared_ptr<CoreController> m_context;
 	mGLWidget* m_gl;
+	QOffscreenSurface m_proxySurface;
+	std::unique_ptr<QOpenGLContext> m_proxyContext;
 };
 
 class PainterGL : public QObject {
@@ -137,15 +143,21 @@ public:
 	void setContext(std::shared_ptr<CoreController>);
 	void setMessagePainter(MessagePainter*);
 	void enqueue(const uint32_t* backing);
+	void enqueue(GLuint tex);
 
 	void stop();
 
 	bool supportsShaders() const { return m_supportsShaders; }
 	int glTex();
 
+	QOpenGLContext* shareContext();
+
 	void setVideoProxy(std::shared_ptr<VideoProxy>);
 	void interrupt();
 
+	// Run on main thread
+	void swapTex();
+
 public slots:
 	void create();
 	void destroy();
@@ -163,13 +175,16 @@ public slots:
 	void showFrameCounter(bool enable);
 	void filter(bool filter);
 	void resizeContext();
+	void updateFramebufferHandle();
 
 	void setShaders(struct VDir*);
 	void clearShaders();
 	VideoShader* shaders();
 
 signals:
+	void created();
 	void started();
+	void texSwapped();
 
 private slots:
 	void doStop();
@@ -184,6 +199,14 @@ private:
 	QList<uint32_t*> m_free;
 	QQueue<uint32_t*> m_queue;
 	uint32_t* m_buffer = nullptr;
+
+	std::array<GLuint, 3> m_bridgeTexes;
+	QQueue<GLuint> m_freeTex;
+	QQueue<GLuint> m_queueTex;
+
+	GLuint m_bridgeTexIn = std::numeric_limits<GLuint>::max();
+	GLuint m_bridgeTexOut = std::numeric_limits<GLuint>::max();
+
 	QPainter m_painter;
 	QMutex m_mutex;
 	QWindow* m_window;

src/platform/qt/GameBoy.cpp

@@ -39,6 +39,7 @@ static const QList<GBMemoryBankControllerType> s_mbcList{
 	GB_UNL_BBD,
 	GB_UNL_HITEK,
 	GB_UNL_SACHEN_MMC1,
+	GB_UNL_SACHEN_MMC2,
 };
 
 static QMap<GBModel, QString> s_gbModelNames;

src/platform/qt/MultiplayerController.cpp

@@ -14,24 +14,46 @@
 #include <mgba/internal/gb/gb.h>
 #endif
 
+#include <algorithm>
+
 using namespace QGBA;
 
 #ifdef M_CORE_GB
-MultiplayerController::Player::Player(CoreController* coreController, GBSIOLockstepNode* node)
+MultiplayerController::Player::Player(CoreController* coreController, GBSIOLockstepNode* gbNode)
 	: controller(coreController)
-	, gbNode(node)
 {
+	node.gb = gbNode;
 }
 #endif
 
 #ifdef M_CORE_GBA
-MultiplayerController::Player::Player(CoreController* coreController, GBASIOLockstepNode* node)
+MultiplayerController::Player::Player(CoreController* coreController, GBASIOLockstepNode* gbaNode)
 	: controller(coreController)
-	, gbaNode(node)
 {
+	node.gba = gbaNode;
 }
 #endif
 
+int MultiplayerController::Player::id() const {
+	switch (controller->platform()) {
+#ifdef M_CORE_GBA
+	case mPLATFORM_GBA:
+		return node.gba->id;
+#endif
+#ifdef M_CORE_GB
+	case mPLATFORM_GB:
+		return node.gb->id;
+#endif
+	case mPLATFORM_NONE:
+		break;
+	}
+	return -1;
+}
+
+bool MultiplayerController::Player::operator<(const MultiplayerController::Player& other) const {
+	return id() < other.id();
+}
+
 MultiplayerController::MultiplayerController() {
 	mLockstepInit(&m_lockstep);
 	m_lockstep.context = this;
@@ -65,6 +87,7 @@ MultiplayerController::MultiplayerController() {
 			player->awake = 0;
 			slept = true;
 		}
+		player->controller->setSync(true);
 		return slept;
 	};
 	m_lockstep.addCycles = [](mLockstep* lockstep, int id, int32_t cycles) {
@@ -72,44 +95,51 @@ MultiplayerController::MultiplayerController() {
 			abort();
 		}
 		MultiplayerController* controller = static_cast<MultiplayerController*>(lockstep->context);
-		if (!id) {
+		Player* player = controller->player(id);
-			for (int i = 1; i < controller->m_players.count(); ++i) {
-				Player* player = &controller->m_players[i];
-#ifdef M_CORE_GBA
-				if (player->controller->platform() == mPLATFORM_GBA && player->gbaNode->d.p->mode != controller->m_players[0].gbaNode->d.p->mode) {
-					player->controller->setSync(true);
-					continue;
-				}
-#endif
-				player->controller->setSync(false);
-				player->cyclesPosted += cycles;
-				if (player->awake < 1) {
 		switch (player->controller->platform()) {
 #ifdef M_CORE_GBA
 		case mPLATFORM_GBA:
-						player->gbaNode->nextEvent += player->cyclesPosted;
+			if (!id) {
+				for (int i = 1; i < controller->m_players.count(); ++i) {
+					player = controller->player(i);
+					player->controller->setSync(false);
+					player->cyclesPosted += cycles;
+					if (player->awake < 1) {
+						player->node.gba->nextEvent += player->cyclesPosted;
+					}
+					mCoreThreadStopWaiting(player->controller->thread());
+					player->awake = 1;
+				}
+			} else {
+				player->controller->setSync(true);
+				player->cyclesPosted += cycles;
+			}
 			break;
 #endif
 #ifdef M_CORE_GB
 		case mPLATFORM_GB:
-						player->gbNode->nextEvent += player->cyclesPosted;
+			if (!id) {
+				player = controller->player(1);
+				player->controller->setSync(false);
+				player->cyclesPosted += cycles;
+				if (player->awake < 1) {
+					player->node.gb->nextEvent += player->cyclesPosted;
+				}
+				mCoreThreadStopWaiting(player->controller->thread());
+				player->awake = 1;
+			} else {
+				player->controller->setSync(true);
+				player->cyclesPosted += cycles;
+			}
 			break;
 #endif
 		default:
 			break;
 		}
-					mCoreThreadStopWaiting(player->controller->thread());
-					player->awake = 1;
-				}
-			}
-		} else {
-			controller->m_players[id].controller->setSync(true);
-			controller->m_players[id].cyclesPosted += cycles;
-		}
 	};
 	m_lockstep.useCycles = [](mLockstep* lockstep, int id, int32_t cycles) {
 		MultiplayerController* controller = static_cast<MultiplayerController*>(lockstep->context);
-		Player* player = &controller->m_players[id];
+		Player* player = controller->player(id);
 		player->cyclesPosted -= cycles;
 		if (player->cyclesPosted <= 0) {
 			mCoreThreadWaitFromThread(player->controller->thread());
@@ -118,21 +148,21 @@ MultiplayerController::MultiplayerController() {
 		cycles = player->cyclesPosted;
 		return cycles;
 	};
-	m_lockstep.unusedCycles= [](mLockstep* lockstep, int id) {
+	m_lockstep.unusedCycles = [](mLockstep* lockstep, int id) {
 		MultiplayerController* controller = static_cast<MultiplayerController*>(lockstep->context);
-		Player* player = &controller->m_players[id];
+		Player* player = controller->player(id);
 		auto cycles = player->cyclesPosted;
 		return cycles;
 	};
 	m_lockstep.unload = [](mLockstep* lockstep, int id) {
 		MultiplayerController* controller = static_cast<MultiplayerController*>(lockstep->context);
 		if (id) {
-			Player* player = &controller->m_players[id];
+			Player* player = controller->player(id);
 			player->controller->setSync(true);
 			player->cyclesPosted = 0;
 
 			// release master GBA if it is waiting for this GBA
-			player = &controller->m_players[0];
+			player = controller->player(0);
 			player->waitMask &= ~(1 << id);
 			if (!player->waitMask && player->awake < 1) {
 				mCoreThreadStopWaiting(player->controller->thread());
@@ -140,7 +170,7 @@ MultiplayerController::MultiplayerController() {
 			}
 		} else {
 			for (int i = 1; i < controller->m_players.count(); ++i) {
-				Player* player = &controller->m_players[i];
+				Player* player = controller->player(i);
 				player->controller->setSync(true);
 				switch (player->controller->platform()) {
 #ifdef M_CORE_GBA
@@ -160,12 +190,12 @@ MultiplayerController::MultiplayerController() {
 					switch (player->controller->platform()) {
 #ifdef M_CORE_GBA
 					case mPLATFORM_GBA:
-						player->gbaNode->nextEvent += player->cyclesPosted;
+						player->node.gba->nextEvent += player->cyclesPosted;
 						break;
 #endif
 #ifdef M_CORE_GB
 					case mPLATFORM_GB:
-						player->gbNode->nextEvent += player->cyclesPosted;
+						player->node.gb->nextEvent += player->cyclesPosted;
 						break;
 #endif
 					default:
@@ -315,3 +345,29 @@ int MultiplayerController::attached() {
 	num = m_lockstep.attached;
 	return num;
 }
+
+MultiplayerController::Player* MultiplayerController::player(int id) {
+	Player* player = &m_players[id];
+	switch (player->controller->platform()) {
+#ifdef M_CORE_GBA
+	case mPLATFORM_GBA:
+		if (player->node.gba->id != id) {
+			std::sort(m_players.begin(), m_players.end());
+			player = &m_players[id];
+		}
+		break;
+#endif
+#ifdef M_CORE_GB
+	case mPLATFORM_GB:
+		if (player->node.gb->id != id) {
+			std::swap(m_players[0], m_players[1]);
+			player = &m_players[id];
+		}
+		break;
+#endif
+	case mPLATFORM_NONE:
+		break;
+	}
+
+	return player;
+}

src/platform/qt/MultiplayerController.h

@@ -5,8 +5,8 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #pragma once
 
-#include <QMutex>
 #include <QList>
+#include <QMutex>
 #include <QObject>
 
 #include <mgba/core/lockstep.h>
@@ -44,6 +44,10 @@ signals:
 	void gameDetached();
 
 private:
+	union Node {
+		GBSIOLockstepNode* gb;
+		GBASIOLockstepNode* gba;
+	};
 	struct Player {
 #ifdef M_CORE_GB
 		Player(CoreController* controller, GBSIOLockstepNode* node);
@@ -52,13 +56,18 @@ private:
 		Player(CoreController* controller, GBASIOLockstepNode* node);
 #endif
 
+		int id() const;
+		bool operator<(const Player&) const;
+
 		CoreController* controller;
-		GBSIOLockstepNode* gbNode = nullptr;
+		Node node = {nullptr};
-		GBASIOLockstepNode* gbaNode = nullptr;
 		int awake = 1;
 		int32_t cyclesPosted = 0;
 		unsigned waitMask = 0;
 	};
+
+	Player* player(int id);
+
 	union {
 		mLockstep m_lockstep;
 #ifdef M_CORE_GB

src/platform/qt/OpenGLBug.cpp

@@ -0,0 +1,39 @@
+/* Copyright (c) 2013-2022 Jeffrey Pfau
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#include "OpenGLBug.h"
+
+#include <QOpenGLContext>
+#include <QOpenGLFunctions>
+
+namespace QGBA {
+
+bool glContextHasBug(OpenGLBug bug) {
+	QOpenGLContext* context = QOpenGLContext::currentContext();
+	if (!context) {
+		abort();
+	}
+	QOpenGLFunctions* fn = context->functions();
+	QString vendor(reinterpret_cast<const char*>(fn->glGetString(GL_VENDOR)));
+	QString renderer(reinterpret_cast<const char*>(fn->glGetString(GL_RENDERER)));
+	QString version(reinterpret_cast<const char*>(fn->glGetString(GL_VERSION)));
+
+	switch (bug) {
+	case OpenGLBug::CROSS_THREAD_FLUSH:
+#ifndef Q_OS_WIN
+		return false;
+#else
+		return vendor == "Intel";
+#endif
+
+	case OpenGLBug::GLTHREAD_BLOCKS_SWAP:
+		return version.contains(" Mesa ");
+
+	default:
+		return false;
+	}
+}
+
+}

src/platform/qt/OpenGLBug.h

@@ -0,0 +1,17 @@
+/* Copyright (c) 2013-2022 Jeffrey Pfau
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#pragma once
+
+namespace QGBA {
+
+enum class OpenGLBug {
+	CROSS_THREAD_FLUSH,       // mgba.io/i/2761
+	GLTHREAD_BLOCKS_SWAP,     // mgba.io/i/2767
+};
+
+bool glContextHasBug(OpenGLBug);
+
+}

src/platform/qt/ReportView.cpp

@@ -308,6 +308,7 @@ void ReportView::generateReport() {
 						deferredBinaries.append(qMakePair(QString("Save %1").arg(winId), save));
 					}
 					mStateExtdataDeinit(&extdata);
+					vf->close(vf);
 				}
 			}
 		} else {

src/platform/qt/SettingsView.cpp

@@ -296,9 +296,14 @@ SettingsView::SettingsView(ConfigController* controller, InputController* inputC
 	}
 
 	const GBColorPreset* colorPresets;
+	QString usedPreset = m_controller->getQtOption("gb.pal").toString();
 	size_t nPresets = GBColorPresetList(&colorPresets);
 	for (size_t i = 0; i < nPresets; ++i) {
-		m_ui.colorPreset->addItem(QString(colorPresets[i].name));
+		QString presetName(colorPresets[i].name);
+		m_ui.colorPreset->addItem(presetName);
+		if (usedPreset == presetName) {
+			m_ui.colorPreset->setCurrentIndex(i);
+		}
 	}
 	connect(m_ui.colorPreset, static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this, [this, colorPresets](int n) {
 		const GBColorPreset* preset = &colorPresets[n];
@@ -640,6 +645,7 @@ void SettingsView::updateConfig() {
 		m_controller->setOption(color.toUtf8().constData(), m_gbColors[colorId] & ~0xFF000000);
 
 	}
+	m_controller->setQtOption("gb.pal", m_ui.colorPreset->currentText());
 
 	int gbColors = GB_COLORS_CGB;
 	if (m_ui.gbColor->isChecked()) {

src/platform/qt/Window.cpp

@@ -1107,6 +1107,8 @@ void Window::changeRenderer() {
 	if (!m_controller) {
 		return;
 	}
+
+	CoreController::Interrupter interrupter(m_controller);
 	if (m_config->getOption("hwaccelVideo").toInt() && m_display->supportsShaders() && m_controller->supportsFeature(CoreController::Feature::OPENGL)) {
 		std::shared_ptr<VideoProxy> proxy = m_display->videoProxy();
 		if (!proxy) {

src/util/vfs/vfs-zip.c

@@ -593,7 +593,11 @@ ssize_t _vfzRead(struct VFile* vf, void* buffer, size_t size) {
 
 ssize_t _vfzWrite(struct VFile* vf, const void* buffer, size_t size) {
 	struct VFileZip* vfz = (struct VFileZip*) vf;
-	return zipWriteInFileInZip(vfz->z, buffer, size);
+	int res = zipWriteInFileInZip(vfz->z, buffer, size);
+	if (res != ZIP_OK) {
+		return res;
+	}
+	return size;
 }
 
 void* _vfzMap(struct VFile* vf, size_t size, int flags) {

version.cmake

@@ -3,7 +3,7 @@ if(NOT PROJECT_NAME)
 endif()
 set(LIB_VERSION_MAJOR 0)
 set(LIB_VERSION_MINOR 10)
-set(LIB_VERSION_PATCH 0)
+set(LIB_VERSION_PATCH 1)
 set(LIB_VERSION_ABI 0.10)
 set(LIB_VERSION_STRING ${LIB_VERSION_MAJOR}.${LIB_VERSION_MINOR}.${LIB_VERSION_PATCH})
 set(SUMMARY "${PROJECT_NAME} Game Boy Advance Emulator")