[Lcd4linux-devel] Help needed: LCD4Linux goes RGB

[Michael R. <re...@eu...>]

Hi there,

I just checked in a bigger change. In preparation for the image widget
(yes, there will be an image widget where you can load a PNM or PNG and
place it in the background) I converted the whole graphic subsystem to
RGBA (yes, Alpha-blending)

The X11 driver works, some of the other drivers *should* work. At least
they compile...

major change: Do not access drv_generic_graphic_FB[] anymore, but use
the drv_generic_graphic_gray(row, col) function instead, which returns
the gray value of a pixel. For B/W displays, draw a pixel if gray > 0
(to keep things simple)

I'm especially asking the authors of the G15 and LUI driver to check
their code, because I cannot test these displays (in the case of LUI, I
cannot even compile because of missing headers)


Second, I'm currently doing alpha-blending with integer arithmetics. But
I'm not sure if the code is right (but I'm sure it's far from optimal).
Someone with deeper knowledge than me?


Third, the X11 driver is very slow now, because I'm doing an
XAllocColor() for every pixel. Again, I'd need someone with X11
programming knowledge....


TIA, Michael

-- 
Michael Reinelt <re...@eu...>
http://home.pages.at/reinelt
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