exaGetPixmapFirstPixel Question

[Soo Chan Lim]

Hi.
I am trying to make a ddx exa video driver at my owned target.
When I test the driver, I have met some error from Xserver.
The error log is bleow,
=========================================
Fatal server error:
exaGetPixmapFirstPixel called for invalid bpp 1
=========================================

And backtrace at the exaGetPixmapFirstPixel function is below
==========================================================

Breakpoint 1, exaGetPixmapFirstPixel (pPixmap=0x477618)
    at ../../exa/exa_unaccel.c:507
507         switch (pPixmap->drawable.bitsPerPixel) {
(gdb) bt
#0  exaGetPixmapFirstPixel (pPixmap=0x477618) at ../../exa/exa_unaccel.c:507
#1  0x406529c0 in exaTryDriverSolidFill (pSrc=0x488ec0, pDst=0x488ce0,
    xSrc=0, ySrc=0, xDst=5, yDst=10, width=1, height=127)
    at ../../exa/exa_render.c:300
#2  0x40654c88 in exaComposite (op=1 '\001', pSrc=0x488ec0, pMask=0x0,
    pDst=0x488ce0, xSrc=0, ySrc=0, xMask=0, yMask=0, xDst=5, yDst=10,
    width=1, height=127) at ../../exa/exa_render.c:923
#3  0x0014ccc4 in damageComposite (op=1 '\001', pSrc=0x488ec0, pMask=0x0,
    pDst=0x488ce0, xSrc=0, ySrc=0, xMask=0, yMask=0, xDst=5, yDst=10,
    width=1, height=127) at ../../../miext/damage/damage.c:643
#4  0x0013392c in CompositePicture (op=1 '\001', pSrc=0x488ec0, pMask=0x0,
    pDst=0x488ce0, xSrc=0, ySrc=0, xMask=0, yMask=0, xDst=5, yDst=10,
    width=1, height=127) at ../../render/picture.c:1718
#5  0x0013b24c in ProcRenderComposite (client=0x433898)
    at ../../render/render.c:723
#6  0x00140324 in ProcRenderDispatch (client=0x433898)
    at ../../render/render.c:2056
#7  0x00024650 in Dispatch () at ../../dix/dispatch.c:445
#8  0x00022414 in main (argc=11, argv=0xbec9bd04, envp=0xbec9bd34)
    at ../../dix/main.c:285
(gdb) p pPixmap->drawable.bitsPerPixel
$1 = 1 '\001'
=============================================================

At exaGetPixmapFirstPixel, the xserver calls the FatalError when the bpp of
the pixmap is 1.

I have two questions at this point.
1. Is this exa module bug? I mean the xserver has the bug?
2. Or my ddx video driver does not being working properly? Especially,
should I fix the createpixmap in my ddx driver?
    -  Should the my ddx driver deal with 1bpp pixmap as the special case
when the driver create the pixmap or modify the pixmap header? I mean that
the createpixmap in the ddx driver makes the bitsPerPixel 8bits
when the pixmap with 1bpp is requested .

 Is there anyone who has the solution in this case?

Thanks.
soolim.
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