Talk:Smedia Glamo 3362

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Blitting with XsetClipMask which isnt maybe supported in hardware. But quite fast. 50 FPS but every third second there only 11 FPS. Then it went up again to 50 FPS for 2 seconds. Dont know why maybe my code is messed up. There is a hardware accelerated method of blitting. But its not easy.

Source used for testing with images (just type make for building for the freerunner):

Faster Method: METHOD 2:

   XCopyArea(display, pixmap, window, gcxor, 0, 0, w, h, x, y);
   XSetForeground(display, gcand, 0);
   XSetBackground(display, gcand, ~0);
   XCopyPlane(display, mask, window, gcand, 0, 0, w, h, x, y, 1L);
   XCopyArea(display, pixmap, window, gcxor, 0, 0, w, h, x, y);
 NOTE:  pixmap = colour pixmap    mask = 1 plane pixmap
 It is pretty quick and you don't need clip masks, shape extensions etc.
                             -- Justin Kibell

Blitting with hardware acceleration is only supported in xlib NOT in SDL. The Size of the tiles should be big. I used 128x160 in a 640x480 resolution. Speed tests:

SDL: 32x32 tiles -> 13 FPS

     128x160 tiles -> 3 FPS

xlib: 32x32 tiles -> 12-13 FPS (300 blits)

     128x160 tiles -> 35 FPS (15 blits)

You can try it for xlib. Scale bg.png up an down. You will notice the difference. oblit is the SDL blit, xblit is the xlib blit. I think that blitting is accelerated but sending blitting commands takes to much time. So a few big blits (maybe 20 or 30) are better then 300 small ones. Link to source: [1]

Known Features

Audio Engine

Is Audio Engine available? In case it can added to Smedia_Glamo_3362#Known_Features.

Audio I/O:

 DGPIO (Default DGPIO0 for audio codec IIC SCLK),
 DGPIO1 (Default DGPIO1 for audio codec IIC SDA),

are accessible over Test-Points.

Audio I2S Bus:

 ASDIN (I2S audio-in serial data)

is accessible on resistor.

Description of Audio PIN: Glamo 3365 Application Note V0.92-FIC.pdf

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