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/* $XConsortium: mach32cmap.c,v 1.2 94/10/12 19:59:09 kaleb Exp $ */
/* $XFree86: xc/programs/Xserver/hw/xfree86/accel/mach32/mach32cmap.c,v 3.0 1994/09/11 00:48:46 dawes Exp $ */
/*
* Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany.
* Copyright 1993 by Kevin E. Martin, Chapel Hill, North Carolina.
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Thomas Roell not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Thomas Roell makes no representations
* about the suitability of this software for any purpose. It is provided
* "as is" without express or implied warranty.
*
*
* THOMAS ROELL, KEVIN E. MARTIN, AND RICKARD E. FAITH DISCLAIM ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL THOMAS
* ROELL OR KEVIN E. MARTIN BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*
*
* Rewritten for the 8514/A by Kevin E. Martin (martin@cs.unc.edu)
* Modified for the Mach-8 by Rickard E. Faith (faith@cs.unc.edu)
* Modified for the Mach32 by Kevin E. Martin (martin@cs.unc.edu)
*
* Header: /proj/X11/mit/server/ddx/xf86/vga/RCS/vgaCmap.c,v 1.2 1991/06/27 00:03:01 root Exp
*/
#include "X.h"
#include "Xproto.h"
#include "compiler.h"
#include "mach32.h"
#define NOMAPYET (ColormapPtr) 0
static ColormapPtr InstalledMaps[MAXSCREENS];
/* current colormap for each screen */
int
mach32ListInstalledColormaps(pScreen, pmaps)
ScreenPtr pScreen;
Colormap *pmaps;
{
/* By the time we are processing requests, we can guarantee that there
* is always a colormap installed */
*pmaps = InstalledMaps[pScreen->myNum]->mid;
return(1);
}
int
mach32GetInstalledColormaps(pScreen, pmap)
ScreenPtr pScreen;
ColormapPtr *pmap;
{
*pmap = InstalledMaps[pScreen->myNum];
return(1);
}
void
mach32StoreColors(pmap, ndef, pdefs)
ColormapPtr pmap;
int ndef;
xColorItem *pdefs;
{
int i;
xColorItem directDefs[256];
extern LUTENTRY mach32savedLUT[256];
if (pmap != InstalledMaps[pmap->pScreen->myNum])
return;
if ((pmap->pVisual->class | DynamicClass) == DirectColor) {
ndef = cfbExpandDirectColors (pmap, ndef, pdefs, directDefs);
pdefs = directDefs;
}
for (i = 0; i < ndef; i++) {
/* Return the n most significant bits from a 16-bit value.
* For VGA, n = 6. For 8-bit DACs, n = 8.
*/
if (mach32DAC8Bit) {
mach32savedLUT[pdefs[i].pixel].r = pdefs[i].red >> 8;
mach32savedLUT[pdefs[i].pixel].g = pdefs[i].green >> 8;
mach32savedLUT[pdefs[i].pixel].b = pdefs[i].blue >> 8;
} else {
mach32savedLUT[pdefs[i].pixel].r = pdefs[i].red >> 10;
mach32savedLUT[pdefs[i].pixel].g = pdefs[i].green >> 10;
mach32savedLUT[pdefs[i].pixel].b = pdefs[i].blue >> 10;
}
if (xf86VTSema) {
outb(DAC_W_INDEX, pdefs[i].pixel);
if (mach32DAC8Bit) {
outb(DAC_DATA, pdefs[i].red >> 8);
outb(DAC_DATA, pdefs[i].green >> 8);
outb(DAC_DATA, pdefs[i].blue >> 8);
} else {
outb(DAC_DATA, pdefs[i].red >> 10);
outb(DAC_DATA, pdefs[i].green >> 10);
outb(DAC_DATA, pdefs[i].blue >> 10);
}
}
}
checkCursorColor = TRUE;
}
void
mach32InstallColormap(pmap)
ColormapPtr pmap;
{
ColormapPtr oldmap = InstalledMaps[pmap->pScreen->myNum];
int entries;
Pixel * ppix;
xrgb * prgb;
xColorItem *defs;
int i;
if (pmap == oldmap)
return;
if ((pmap->pVisual->class | DynamicClass) == DirectColor)
entries = (pmap->pVisual->redMask |
pmap->pVisual->greenMask |
pmap->pVisual->blueMask) + 1;
else
entries = pmap->pVisual->ColormapEntries;
ppix = (Pixel *)ALLOCATE_LOCAL( entries * sizeof(Pixel));
prgb = (xrgb *)ALLOCATE_LOCAL( entries * sizeof(xrgb));
defs = (xColorItem *)ALLOCATE_LOCAL(entries * sizeof(xColorItem));
if ( oldmap != NOMAPYET)
WalkTree( pmap->pScreen, TellLostMap, &oldmap->mid);
InstalledMaps[pmap->pScreen->myNum] = pmap;
for ( i=0; i<entries; i++) ppix[i] = i;
QueryColors( pmap, entries, ppix, prgb);
for ( i=0; i<entries; i++) /* convert xrgbs to xColorItems */
{
defs[i].pixel = ppix[i];
defs[i].red = prgb[i].red;
defs[i].green = prgb[i].green;
defs[i].blue = prgb[i].blue;
defs[i].flags = DoRed|DoGreen|DoBlue;
}
mach32StoreColors( pmap, entries, defs);
WalkTree(pmap->pScreen, TellGainedMap, &pmap->mid);
mach32RenewCursorColor(pmap->pScreen);
DEALLOCATE_LOCAL(ppix);
DEALLOCATE_LOCAL(prgb);
DEALLOCATE_LOCAL(defs);
}
void
mach32UninstallColormap(pmap)
ColormapPtr pmap;
{
ColormapPtr defColormap;
if ( pmap != InstalledMaps[pmap->pScreen->myNum] )
return;
defColormap = (ColormapPtr) LookupIDByType( pmap->pScreen->defColormap,
RT_COLORMAP);
if (defColormap == InstalledMaps[pmap->pScreen->myNum])
return;
(*pmap->pScreen->InstallColormap) (defColormap);
}
/* This is for the screen saver */
void
mach32RestoreColor0(pScreen)
ScreenPtr pScreen;
{
Pixel pix = 0;
xrgb rgb;
if (InstalledMaps[pScreen->myNum] == NOMAPYET)
return;
QueryColors(InstalledMaps[pScreen->myNum], 1, &pix, &rgb);
outb(DAC_W_INDEX, 0);
if (mach32DAC8Bit) {
outb(DAC_DATA, rgb.red >> 8);
outb(DAC_DATA, rgb.green >> 8);
outb(DAC_DATA, rgb.blue >> 8);
} else {
outb(DAC_DATA, rgb.red >> 10);
outb(DAC_DATA, rgb.green >> 10);
outb(DAC_DATA, rgb.blue >> 10);
}
}
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