/*
* Display driver callbacks.
*/
BOOL APIENTRY VBoxDispDrvSetPalette(DHPDEV dhpdev, PALOBJ *ppalo, FLONG fl, ULONG iStart, ULONG cColors)
{
BYTE aClut[MAX_CLUT_SIZE];
PVIDEO_CLUT pClut = (PVIDEO_CLUT) aClut;
PVIDEO_CLUTDATA pData = &pClut->LookupTable[0].RgbArray;
PVBOXDISPDEV pDev = (PVBOXDISPDEV)dhpdev;
NOREF(fl);
int rc;
LOGF_ENTER();
pClut->NumEntries = (USHORT) cColors;
pClut->FirstEntry = (USHORT) iStart;
/* Copy PALOBJ colors to PVIDEO_CLUT */
if (cColors != PALOBJ_cGetColors(ppalo, iStart, cColors, (ULONG*) pData))
{
WARN(("PALOBJ_cGetColors failed"));
return FALSE;
}
/* Set reserved bytes to 0 and perform shifting if needed */
for (ULONG idx=0; idx<cColors; ++idx)
{
pData[idx].Unused = 0;
if (pDev->mode.ulPaletteShift)
{
pData[idx].Red >>= pDev->mode.ulPaletteShift;
pData[idx].Green >>= pDev->mode.ulPaletteShift;
pData[idx].Blue >>= pDev->mode.ulPaletteShift;
}
}
BOOL DrvSetPalette (DHPDEV dhpdev,
PALOBJ *ppalo,
FLONG fl,
ULONG iStart,
ULONG cColors)
{
BYTE ajClutSpace[MAX_CLUT_SIZE];
PVIDEO_CLUT pScreenClut = (PVIDEO_CLUT) ajClutSpace;
PPALETTEENTRY pape;
ULONG ulTemp = 256;
UNREFERENCED_PARAMETER (fl);
DISPBLTDBG ((1, "TGA.DLL!DrvSetPalette - Entry\n"));
DISPBLTDBG ((2, "TGA.DLL!DrvSetPalette - ppalo [%x], fl [%x], iStart [%d], cColors [%d]\n", ppalo, fl, iStart, cColors));
// Fill in pScreenClut header info
pScreenClut->NumEntries = (USHORT)cColors;
pScreenClut->FirstEntry = (USHORT)iStart;
pape = (PPALETTEENTRY) (pScreenClut->LookupTable);
if (cColors != PALOBJ_cGetColors (ppalo, iStart, cColors, (PULONG) pape))
{
RIP ("DISP DrvSetPalette failed PALOBJ_cGetColors\n");
return FALSE;
}
// Set the high reserved byte in each palette entry to 0.
while (cColors--)
pape[cColors].peFlags = 0;
// Set palette registers
if (EngDeviceIoControl (((PPDEV)(dhpdev))->hDriver,
IOCTL_VIDEO_SET_COLOR_REGISTERS,
pScreenClut,
MAX_CLUT_SIZE,
NULL,
0,
&cColors))
{
RIP ("DISP DrvSetPalette failed EngDeviceIoControl\n");
return FALSE;
}
DISPBLTDBG ((1, "TGA.DLL!DrvSetPalette - Exit\n"));
return TRUE;
}