M CHANGES → CHANGES

@@ -26,6 +26,7 @@ - Qt: Fix overrides getting discarded (fixes mgba.io/i/1354)
  - Qt: Fix saved scale not getting set on resize (fixes mgba.io/i/1074)
  - CMake: Fix .deb imagemagick dependencies
  - Qt: Fix crash in sprite viewer magnification (fixes mgba.io/i/1362)
+ - 3DS: Ensure core 2 can be used for threaded renderer (fixes mgba.io/i/1371)
 Misc:
  - GBA Savedata: EEPROM performance fixes
  - GBA Savedata: Automatically map 1Mbit Flash files as 1Mbit Flash

M src/platform/3ds/main.c → src/platform/3ds/main.c

@@ -104,6 +104,7 @@ static C3D_RenderTarget* upscaleBuffer;
 static C3D_Tex upscaleBufferTex;
 
 static aptHookCookie cookie;
+static bool core2;
 
 extern bool allocateRomBuffer(void);
 
@@ -258,9 +259,7 @@ CAMU_SetAutoWhiteBalance(imageSource->cam, false);
 }
 
 static void _setup(struct mGUIRunner* runner) {
-	bool n3ds = false;
-	APT_CheckNew3DS(&n3ds);
-	if (n3ds) {
+	if (core2) {
 		mCoreConfigSetDefaultIntValue(&runner->config, "threadedVideo", 1);
 		mCoreLoadForeignConfig(runner->core, &runner->config);
 	}
@@ -752,6 +751,10 @@ ndspChnWaveBufAdd(0, &dspBuffer[bufferId]);
 	}
 }
 
+THREAD_ENTRY _core2Test(void* context) {
+	UNUSED(context);
+}
+
 int main() {
 	rotation.d.sample = _sampleRotation;
 	rotation.d.readTiltX = _readTiltX;
@@ -951,6 +954,12 @@ ConditionInit(&runner.autosave.cond);
 
 	APT_SetAppCpuTimeLimit(20);
 	runner.autosave.thread = threadCreate(mGUIAutosaveThread, &runner.autosave, 0x4000, 0x1F, 1, true);
+
+	Thread thread2;
+	if (ThreadCreate(&thread2, _core2Test, NULL) == 0) {
+		core2 = true;
+		ThreadJoin(thread2);
+	}
 
 	mGUIInit(&runner, "3ds");