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Forums › Windows Phone and Windows Mobile › [Windows Mobile] Touchscreen framerate and registry problem


3 posts

Wannabe Geek


Topic # 26104 12-Sep-2008 02:41
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Hi there.... I´m developing a game for windows mobile 6... I´m testing it in HTC Pilgrim phone.... It have touchscreen functionality, but the problem is that when I touch the screen the frame rate is reduced significantly....

I try adding the following keys to the registry:
========================================================================================================
HKEY_LOCAL_MACHINE\Drivers\BuiltIn\Touch\HighPriority256
HKEY_LOCAL_MACHINE\Drivers\BuiltIn\Touch\Priority256
========================================================================================================

In the following way:

Using RegCreateKeyEx(), RegSetValueEx() and RegCloseKey() functions when game finish it´s installation....
========================================================================================================
HKEY hkey;
DWORD dwVal = 255;
RegCreateKeyEx( HKEY_LOCAL_MACHINE, TEXT("Drivers\\BuiltIn\\Touch"), 0, 0, 0, 0, 0, &hkey, 0 );
RegSetValueEx( hkey, TEXT("HighPriority256"), 0, REG_DWORD, (CONST BYTE*)&dwVal, 1 );
RegCloseKey( hkey );

RegCreateKeyEx( HKEY_LOCAL_MACHINE, TEXT("Drivers\\BuiltIn\\Touch"), 0, 0, 0, 0, 0, &hkey, 0 );
RegSetValueEx( hkey, TEXT("Priority256"), 0, REG_DWORD, (CONST BYTE*)&dwVal, 1 );
RegCloseKey( hkey );
========================================================================================================
then if I reboot the phone, the problem is fixed, so... the real problem is that I need to add the previous lines into the registry and refresh it without reboot the phone....

or if there is another thing I can do..... just tell me....

best regards...

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653 posts

Ultimate Geek
+1 received by user: 20

Trusted

  Reply # 164105 12-Sep-2008 20:58

I haven't come across the HTC Pilgrim, but a number of the recent HTC phones have had a problem with poor implementation of graphics drivers for the inbuilt qualcomm video chip - the most common symptom is a slowdown in framerate when the touchscreen is being used.

More information at http://www.htcclassaction.org/ - there are some leaked drivers that can be packaged into a ROM that help with the touchscreen slowdown, but drivers are not yet working properly for most devices of that era.

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