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|
/***************************************************************************\
|* *|
|* Copyright 2003 NVIDIA, Corporation. All rights reserved. *|
|* *|
|* NOTICE TO USER: The source code is copyrighted under U.S. and *|
|* international laws. Users and possessors of this source code are *|
|* hereby granted a nonexclusive, royalty-free copyright license to *|
|* use this code in individual and commercial software. *|
|* *|
|* Any use of this source code must include, in the user documenta- *|
|* tion and internal comments to the code, notices to the end user *|
|* as follows: *|
|* *|
|* Copyright 2003 NVIDIA, Corporation. All rights reserved. *|
|* *|
|* NVIDIA, CORPORATION MAKES NO REPRESENTATION ABOUT THE SUITABILITY *|
|* OF THIS SOURCE CODE FOR ANY PURPOSE. IT IS PROVIDED "AS IS" *|
|* WITHOUT EXPRESS OR IMPLIED WARRANTY OF ANY KIND. NVIDIA, CORPOR- *|
|* ATION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOURCE CODE, *|
|* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGE- *|
|* MENT, AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL *|
|* NVIDIA, CORPORATION BE LIABLE FOR ANY SPECIAL, INDIRECT, INCI- *|
|* DENTAL, OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RE- *|
|* SULTING 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 SOURCE CODE. *|
|* *|
|* U.S. Government End Users. This source code is a "commercial *|
|* item," as that term is defined at 48 C.F.R. 2.101 (OCT 1995), *|
|* consisting of "commercial computer software" and "commercial *|
|* computer software documentation," as such terms are used in *|
|* 48 C.F.R. 12.212 (SEPT 1995) and is provided to the U.S. Govern- *|
|* ment only as a commercial end item. Consistent with 48 C.F.R. *|
|* 12.212 and 48 C.F.R. 227.7202-1 through 227.7202-4 (JUNE 1995), *|
|* all U.S. Government End Users acquire the source code with only *|
|* those rights set forth herein. *|
|* *|
\***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "nv_include.h"
#include "cursorstr.h"
/****************************************************************************\
* *
* HW Cursor Entrypoints *
* *
\****************************************************************************/
#define TRANSPARENT_PIXEL 0
#define ConvertToRGB555(c) \
(((c & 0xf80000) >> 9 ) | ((c & 0xf800) >> 6 ) | ((c & 0xf8) >> 3 ) | 0x8000)
#define ConvertToRGB888(c) (c | 0xff000000)
#define BYTE_SWAP_32(c) ((c & 0xff000000) >> 24) | \
((c & 0xff0000) >> 8) | \
((c & 0xff00) << 8) | \
((c & 0xff) << 24)
static void
ConvertCursor1555(NVPtr pNv, CARD32 *src, CARD16 *dst)
{
CARD32 b, m;
int i, j;
for ( i = 0; i < 32; i++ ) {
b = *src++;
m = *src++;
for ( j = 0; j < 32; j++ ) {
#if X_BYTE_ORDER == X_BIG_ENDIAN
if ( m & 0x80000000)
*dst = ( b & 0x80000000) ? pNv->curFg : pNv->curBg;
else
*dst = TRANSPARENT_PIXEL;
b <<= 1;
m <<= 1;
#else
if ( m & 1 )
*dst = ( b & 1) ? pNv->curFg : pNv->curBg;
else
*dst = TRANSPARENT_PIXEL;
b >>= 1;
m >>= 1;
#endif
dst++;
}
}
}
static void
ConvertCursor8888(NVPtr pNv, CARD32 *src, CARD32 *dst)
{
CARD32 b, m;
int i, j;
for ( i = 0; i < 128; i++ ) {
b = *src++;
m = *src++;
for ( j = 0; j < 32; j++ ) {
#if X_BYTE_ORDER == X_BIG_ENDIAN
if ( m & 0x80000000)
*dst = ( b & 0x80000000) ? pNv->curFg : pNv->curBg;
else
*dst = TRANSPARENT_PIXEL;
b <<= 1;
m <<= 1;
#else
if ( m & 1 )
*dst = ( b & 1) ? pNv->curFg : pNv->curBg;
else
*dst = TRANSPARENT_PIXEL;
b >>= 1;
m >>= 1;
#endif
dst++;
}
}
}
static void
TransformCursor (NVPtr pNv)
{
CARD32 *tmp;
int i, dwords;
/* convert to color cursor */
if(pNv->alphaCursor) {
dwords = 64 * 64;
if(!(tmp = ALLOCATE_LOCAL(dwords * 4))) return;
ConvertCursor8888(pNv, pNv->curImage, tmp);
} else {
dwords = (32 * 32) >> 1;
if(!(tmp = ALLOCATE_LOCAL(dwords * 4))) return;
ConvertCursor1555(pNv, pNv->curImage, (CARD16*)tmp);
}
for(i = 0; i < dwords; i++)
pNv->CURSOR[i] = tmp[i];
DEALLOCATE_LOCAL(tmp);
}
static void
NVLoadCursorImage( ScrnInfoPtr pScrn, unsigned char *src )
{
NVPtr pNv = NVPTR(pScrn);
/* save copy of image for color changes */
memcpy(pNv->curImage, src, (pNv->alphaCursor) ? 1024 : 256);
TransformCursor(pNv);
}
static void
NVSetCursorPosition(ScrnInfoPtr pScrn, int x, int y)
{
NVPtr pNv = NVPTR(pScrn);
pNv->PRAMDAC[0x0000300/4] = (x & 0xFFFF) | (y << 16);
}
static void
NVSetCursorColors(ScrnInfoPtr pScrn, int bg, int fg)
{
NVPtr pNv = NVPTR(pScrn);
CARD32 fore, back;
if(pNv->alphaCursor) {
fore = ConvertToRGB888(fg);
back = ConvertToRGB888(bg);
#if X_BYTE_ORDER == X_BIG_ENDIAN
if((pNv->Chipset & 0x0ff0) == 0x0110) {
fore = BYTE_SWAP_32(fore);
back = BYTE_SWAP_32(back);
}
#endif
} else {
fore = ConvertToRGB555(fg);
back = ConvertToRGB555(bg);
#if X_BYTE_ORDER == X_BIG_ENDIAN
if((pNv->Chipset & 0x0ff0) == 0x0110) {
fore = ((fore & 0xff) << 8) | (fore >> 8);
back = ((back & 0xff) << 8) | (back >> 8);
}
#endif
}
if ((pNv->curFg != fore) || (pNv->curBg != back)) {
pNv->curFg = fore;
pNv->curBg = back;
TransformCursor(pNv);
}
}
static void
NVShowCursor(ScrnInfoPtr pScrn)
{
NVPtr pNv = NVPTR(pScrn);
/* Enable cursor - X-Windows mode */
NVShowHideCursor(pNv, 1);
}
static void
NVHideCursor(ScrnInfoPtr pScrn)
{
NVPtr pNv = NVPTR(pScrn);
/* Disable cursor */
NVShowHideCursor(pNv, 0);
}
static Bool
NVUseHWCursor(ScreenPtr pScreen, CursorPtr pCurs)
{
return TRUE;
}
#ifdef ARGB_CURSOR
static Bool
NVUseHWCursorARGB(ScreenPtr pScreen, CursorPtr pCurs)
{
if((pCurs->bits->width <= 64) && (pCurs->bits->height <= 64))
return TRUE;
return FALSE;
}
static void
NVLoadCursorARGB(ScrnInfoPtr pScrn, CursorPtr pCurs)
{
NVPtr pNv = NVPTR(pScrn);
CARD32 *image = pCurs->bits->argb;
CARD32 *dst = (CARD32*)pNv->CURSOR;
CARD32 alpha, tmp;
int x, y, w, h;
w = pCurs->bits->width;
h = pCurs->bits->height;
if((pNv->Chipset & 0x0ff0) == 0x0110) { /* premultiply */
for(y = 0; y < h; y++) {
for(x = 0; x < w; x++) {
alpha = *image >> 24;
if(alpha == 0xff)
tmp = *image;
else {
tmp = (alpha << 24) |
(((*image & 0xff) * alpha) / 255) |
((((*image & 0xff00) * alpha) / 255) & 0xff00) |
((((*image & 0xff0000) * alpha) / 255) & 0xff0000);
}
image++;
#if X_BYTE_ORDER == X_BIG_ENDIAN
*dst++ = BYTE_SWAP_32(tmp);
#else
*dst++ = tmp;
#endif
}
for(; x < 64; x++)
*dst++ = 0;
}
} else {
for(y = 0; y < h; y++) {
for(x = 0; x < w; x++)
*dst++ = *image++;
for(; x < 64; x++)
*dst++ = 0;
}
}
if(y < 64)
memset(dst, 0, 64 * (64 - y) * 4);
}
#endif
Bool
NVCursorInit(ScreenPtr pScreen)
{
ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
NVPtr pNv = NVPTR(pScrn);
xf86CursorInfoPtr infoPtr;
infoPtr = xf86CreateCursorInfoRec();
if(!infoPtr) return FALSE;
pNv->CursorInfoRec = infoPtr;
if(pNv->alphaCursor)
infoPtr->MaxWidth = infoPtr->MaxHeight = 64;
else
infoPtr->MaxWidth = infoPtr->MaxHeight = 32;
infoPtr->Flags = HARDWARE_CURSOR_TRUECOLOR_AT_8BPP |
HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_32;
infoPtr->SetCursorColors = NVSetCursorColors;
infoPtr->SetCursorPosition = NVSetCursorPosition;
infoPtr->LoadCursorImage = NVLoadCursorImage;
infoPtr->HideCursor = NVHideCursor;
infoPtr->ShowCursor = NVShowCursor;
infoPtr->UseHWCursor = NVUseHWCursor;
#ifdef ARGB_CURSOR
if(pNv->alphaCursor) {
infoPtr->UseHWCursorARGB = NVUseHWCursorARGB;
infoPtr->LoadCursorARGB = NVLoadCursorARGB;
}
#endif
return(xf86InitCursor(pScreen, infoPtr));
}
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