Function gspInit

libctru/source/services/gspgpu.c:156–206

}

Result gspInit(void)
{
	Result ret=0;
	if (AtomicPostIncrement(&gspRefCount)) return 0;

	// Initialize events
	for (int i = 0; i < GSPGPU_EVENT_MAX; i ++)
		LightEvent_Init(&gspEvents[i], RESET_STICKY);

	// Retrieve a GSP service session handle
	ret = srvGetServiceHandle(&gspGpuHandle, "gsp::Gpu");
	if (R_FAILED(ret)) goto _fail0;

	// Acquire GPU rights
	ret = GSPGPU_AcquireRight(0);
	if (R_FAILED(ret)) goto _fail1;

	// Register ourselves as a user of graphics hardware
	svcCreateEvent(&gspEvent, RESET_ONESHOT);
	ret = GSPGPU_RegisterInterruptRelayQueue(gspEvent, 0x1, &gspSharedMemHandle, &gspThreadId);
	if (R_FAILED(ret))
		goto _fail2;

	// Initialize the hardware if we are the first process to register
	if (ret == 0x2A07)
		gspHardwareInit();

	// Map GSP shared memory
	gspSharedMem = mappableAlloc(0x1000);
	svcMapMemoryBlock(gspSharedMemHandle, (u32)gspSharedMem, MEMPERM_READWRITE, MEMPERM_DONTCARE);

	// Initialize interrupt queue header
	s32* sharedGspCmdBuf = (s32*)((u8*)gspSharedMem + 0x800 + gspThreadId*0x200);
	do {
		__ldrex(sharedGspCmdBuf);
	} while (__strex(sharedGspCmdBuf, 0));

	// Start event handling thread
	gspRunEvents = true;
	gspLastEvent = -1;
	gspEventThread = threadCreate(gspEventThreadMain, 0x0, GSP_EVENT_STACK_SIZE, 0x1A, -2, true);
	return 0;

_fail2:
	GSPGPU_ReleaseRight();
_fail1:
	svcCloseHandle(gspGpuHandle);
_fail0:
	AtomicDecrement(&gspRefCount);
	return ret;
}

void gspExit(void)
{