You can now render graphics to offscreen bitmaps in PicoGUI. The new API function 
pgRender can immediately render a gropnode to a bitmap. In addition to this, the new 
pgCreateBitmap can create a new bitmap of a specified size. I have also added a PGFX 
interface for pgRender.
The new demo program 'offscreen.c' demonstrates all the new functionality.

Though it isn't complete yet (doesn't work on double-buffered drivers) PicoGUI now has 
support for rendering directly to the display, creating a full-screen mode that may be 
useful for games or screen-savers. Use pgRegisterOwner to register PG_OWN_DISPLAY. 
This will grant exclusive access to the display; PicoGUI cannot draw any of its normal 
output to the screen. Then, use pgRender or PGFX with a bitmap handle of zero to draw 
directly on the display.

--
To the systems programmer, users and applications serve only to provide a 
test load.


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