📄 dispdrvr.c
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yTop = prc->top < 0 ? 0 : prc->top;
xRight = prc->right > gDibBufferWidth ? gDibBufferWidth : prc->right;
yBottom = prc->bottom > gDibBufferHeight ? gDibBufferHeight : prc->bottom;
if ((LONG)xLeft >= (LONG)xRight || (LONG)yTop >= (LONG)yBottom) return;
xLeft*=bytesPerPixel;
xRight*=bytesPerPixel;
bytesPerRow=DispDrvr_cxScreen*bytesPerPixel;
srcBytesPerRow=gDibBufferWidth*bytesPerPixel;
srcWidthB = xRight -xLeft;
if (bLandscapeDisplay) {
srcStartRow = yTop * srcBytesPerRow;
srcMarginWidth = srcBytesPerRow-srcWidthB;
dstStartRow = yTop * bytesPerRow;
dstMarginWidth = bytesPerRow-srcWidthB;
pDstBuf = gFrameBuffer + dstStartRow + xLeft;
} else {
srcStartRow = (yBottom-1) * srcBytesPerRow;
srcMarginWidth = (yBottom-yTop) * srcBytesPerRow;
dstStartRow = xLeft * DispDrvr_cyScreen;
dstMarginWidth = (DispDrvr_cyScreen-(yBottom-yTop))*bytesPerPixel;
pDstBuf = gFrameBuffer + dstStartRow + (DispDrvr_cyScreen -yBottom)*bytesPerPixel;
}
pSrcBuf = gDibBuffer +srcStartRow +xLeft;
EnterCriticalSection(&displayMutex);
if (bLandscapeDisplay) {
for (row = yTop;row < yBottom;row++) {
i=srcWidthB;
#if 0
while(i > 0)
{
if (i<4 || ((unsigned)pDstBuf & 0x3) || ((unsigned)pSrcBuf & 0x3))
{
*pDstBuf++ = *pSrcBuf;
pSrcBuf++;
i-=1;
} else
{
*(unsigned *)pDstBuf = *(unsigned *)pSrcBuf;
pDstBuf+=4;
pSrcBuf+=4;
i-=4;
}
}
pSrcBuf += srcMarginWidth;
pDstBuf += dstMarginWidth;
#else // !0
memcpy(pDstBuf, pSrcBuf, i);
pDstBuf += i + dstMarginWidth;
pSrcBuf += i + srcMarginWidth;
#endif // 0
}
} else {
DirtyRectDumpPortraitLoop_C(pDstBuf, pSrcBuf, yTop, yBottom, srcWidthB, bytesPerRow,
bytesPerPixel, srcMarginWidth, dstMarginWidth);
}
// Cursor update request?.
if (gDrawCursorFlag &&
gCursorRect.left*bytesPerPixel < xRight && gCursorRect.right*bytesPerPixel > xLeft &&
(DWORD)gCursorRect.top < yBottom && (DWORD)gCursorRect.bottom > yTop) {
DWORD srcRowMarginB;
DWORD cursorSizeXB;
yTop=gCursorRect.top;
// Clip off cursor if past bottom of screen
yBottom = gCursorRect.bottom > gDibBufferHeight ? gDibBufferHeight : gCursorRect.bottom;
// Now clip off cursor if past right side of screen
clipWidthB=gCursorRect.right > gDibBufferWidth ? gCursorRect.right -gDibBufferWidth: 0;
clipWidthB*=bytesPerPixel;
xLeft=gCursorRect.left*bytesPerPixel;
cursorWidthB=CURSOR_XSIZE*bytesPerPixel;
cursorSizeXB=(gCursorRect.right - gCursorRect.left)*bytesPerPixel;
srcWidthB=cursorSizeXB - clipWidthB;
srcRowMarginB = cursorWidthB - cursorSizeXB;
if (bLandscapeDisplay) {
srcStartRow = 0;
srcMarginWidth = 0;
dstStartRow = yTop * bytesPerRow;
dstMarginWidth = bytesPerRow-srcWidthB;
pDstBuf = gFrameBuffer + dstStartRow + xLeft;
} else {
srcStartRow = (yBottom-yTop-1) * cursorWidthB;
srcMarginWidth = (yBottom-yTop) * cursorWidthB;
dstStartRow = xLeft * DispDrvr_cyScreen;
dstMarginWidth = (DispDrvr_cyScreen-(yBottom-yTop))*bytesPerPixel;
pDstBuf = gFrameBuffer + dstStartRow + (DispDrvr_cyScreen -yBottom)*bytesPerPixel;
}
pSrcBuf =(BYTE *)gCursorData + srcStartRow;
pSrcMask =(BYTE *)gCursorMask + srcStartRow;
if (bLandscapeDisplay) {
for (row=yTop;row<yBottom;row++)
{
i=srcWidthB;
pSrcBuf += srcRowMarginB;
pSrcMask += srcRowMarginB;
while (i > 0)
{
if (i<4 || ((unsigned)pDstBuf & 0x3) || ((unsigned)pSrcBuf & 0x3))
{
*pDstBuf &= *pSrcMask;
*pDstBuf++ ^= *pSrcBuf;
pSrcMask++;
pSrcBuf++;
i-=1;
} else
{
*(unsigned *)pDstBuf &= *(unsigned *)pSrcMask;
*(unsigned *)pDstBuf ^= *(unsigned *)pSrcBuf;
pDstBuf+=4;
pSrcMask+=4;
pSrcBuf+=4;
i-=4;
}
}
pSrcMask += clipWidthB;
pSrcBuf += clipWidthB;
pDstBuf += dstMarginWidth;
}
} else {
pSrcBuf += srcRowMarginB;
pSrcMask += srcRowMarginB;
for (i=0;i<srcWidthB/bytesPerPixel;i++) {
for (row=yTop;row<yBottom;row++) {
for (j=0;j<bytesPerPixel;j++) {
*pDstBuf &= *(pSrcMask+j);
*pDstBuf++ ^= *(pSrcBuf+j);
}
pSrcBuf-=cursorWidthB;
pSrcMask-=cursorWidthB;
}
pSrcBuf +=srcMarginWidth+2;
pSrcMask +=srcMarginWidth+2;
pDstBuf +=dstMarginWidth;
}
}
}
LeaveCriticalSection(&displayMutex);
}
}
void DirtyRectDumpPortraitLoop_C_rectfill(BYTE *pDstBuf, WORD srcColor,DWORD yTop,DWORD yBottom,
DWORD srcWidthB, DWORD bytesPerRow, DWORD bytesPerPixel, DWORD srcMarginWidth, DWORD dstMarginWidth)
{
DWORD row,i;
WORD *pwDst;
WORD rowLen;
//16-bit
srcWidthB >>= 1;
pwDst = (WORD *)pDstBuf;
//first row for pwSrc, then column for pwDst
rowLen = (WORD)(yBottom - yTop);
bytesPerRow >>=1;
dstMarginWidth >>=1;
srcMarginWidth >>=1;
for (i=0;i<srcWidthB;i++) {
for (row=0;row < (DWORD)(rowLen >>2);row++) {
*pwDst ++ = srcColor;
*pwDst ++ = srcColor;
*pwDst ++ = srcColor;
*pwDst ++ = srcColor;
}
for (row=0;row < (DWORD)(rowLen & 0x3);row++) {
*pwDst ++ = srcColor;
}
pwDst +=dstMarginWidth;
}
}
void DispDrvrDirtyRectDump_rectfill(LPCRECT prc, DWORD color)
{
BYTE *pDstBuf,*pSrcBuf,*pSrcMask;
WORD srcColor = (WORD)color;
DWORD xLeft,yTop,xRight,yBottom;
DWORD bytesPerRow,bytesPerPixel,srcBytesPerRow;
DWORD row,i,j;
DWORD srcWidthB,srcMarginWidth,clipWidthB,dstMarginWidth,cursorWidthB;
DWORD srcStartRow,dstStartRow;
DWORD srcMarginWidth2;
DWORD dstMarginWidth2;
DWORD dstStep;
if (bAllowOSFrameBufferUpdates)
{
bytesPerPixel=bpp/8;
xLeft = prc->left < 0 ? 0 : prc->left;
yTop = prc->top < 0 ? 0 : prc->top;
xRight = prc->right > gDibBufferWidth ? gDibBufferWidth : prc->right;
yBottom = prc->bottom > gDibBufferHeight ? gDibBufferHeight : prc->bottom;
if ((LONG)xLeft >= (LONG)xRight || (LONG)yTop >= (LONG)yBottom) return;
xLeft*=bytesPerPixel;
xRight*=bytesPerPixel;
bytesPerRow=DispDrvr_cxScreen*bytesPerPixel;
srcBytesPerRow=gDibBufferWidth*bytesPerPixel;
srcWidthB = xRight -xLeft;
if (bLandscapeDisplay) {
srcStartRow = yTop * srcBytesPerRow;
srcMarginWidth = srcBytesPerRow-srcWidthB;
dstStartRow = yTop * bytesPerRow;
dstMarginWidth = bytesPerRow-srcWidthB;
pDstBuf = gFrameBuffer + dstStartRow + xLeft;
} else {
srcStartRow = (yBottom-1) * srcBytesPerRow;
srcMarginWidth = (yBottom-yTop) * srcBytesPerRow;
dstStartRow = xLeft * DispDrvr_cyScreen;
dstMarginWidth = (DispDrvr_cyScreen-(yBottom-yTop))*bytesPerPixel;
pDstBuf = gFrameBuffer + dstStartRow + (DispDrvr_cyScreen -yBottom)*bytesPerPixel;
dstStep = DispDrvr_cyScreen*bytesPerPixel; //portrait frame buffer step
srcMarginWidth2 = DispDrvr_cxScreen* bytesPerPixel + ((xRight-xLeft)) ;
dstMarginWidth2 = (xRight-xLeft)*dstStep/bytesPerPixel;
}
pSrcBuf = gDibBuffer +srcStartRow +xLeft;
EnterCriticalSection(&displayMutex);
if (bLandscapeDisplay) {
for (row = yTop;row < yBottom;row++) {
i=srcWidthB;
while(i > 0)
{
if (i<4 || ((unsigned)pDstBuf & 0x3) || ((unsigned)pSrcBuf & 0x3))
{
*pDstBuf++ = *pSrcBuf;
pSrcBuf++;
i-=1;
} else
{
*(unsigned *)pDstBuf = *(unsigned *)pSrcBuf;
pDstBuf+=4;
pSrcBuf+=4;
i-=4;
}
}
pSrcBuf += srcMarginWidth;
pDstBuf += dstMarginWidth;
}
} else {
DirtyRectDumpPortraitLoop_C_rectfill(pDstBuf,
srcColor,
yTop,
yBottom,
srcWidthB,
bytesPerRow,
bytesPerPixel,
srcMarginWidth,
dstMarginWidth);
}
// Cursor update request?.
if (gDrawCursorFlag &&
gCursorRect.left*bytesPerPixel < xRight && gCursorRect.right*bytesPerPixel > xLeft &&
(DWORD)gCursorRect.top < yBottom && (DWORD)gCursorRect.bottom > yTop) {
DWORD srcRowMarginB;
DWORD cursorSizeXB;
yTop=gCursorRect.top;
// Clip off cursor if past bottom of screen
yBottom = gCursorRect.bottom > gDibBufferHeight ? gDibBufferHeight : gCursorRect.bottom;
// Now clip off cursor if past right side of screen
clipWidthB=gCursorRect.right > gDibBufferWidth ? gCursorRect.right -gDibBufferWidth : 0;
clipWidthB*=bytesPerPixel;
xLeft=gCursorRect.left*bytesPerPixel;
cursorWidthB=CURSOR_XSIZE*bytesPerPixel;
cursorSizeXB=(gCursorRect.right - gCursorRect.left)*bytesPerPixel;
srcWidthB=cursorSizeXB - clipWidthB;
srcRowMarginB = cursorWidthB - cursorSizeXB;
if (bLandscapeDisplay) {
srcStartRow = 0;
srcMarginWidth = 0;
dstStartRow = yTop * bytesPerRow;
dstMarginWidth = bytesPerRow-srcWidthB;
pDstBuf = gFrameBuffer + dstStartRow + xLeft;
} else {
srcStartRow = (yBottom-yTop-1) * cursorWidthB;
srcMarginWidth = (yBottom-yTop) * cursorWidthB;
dstStartRow = xLeft * DispDrvr_cyScreen;
dstMarginWidth = (DispDrvr_cyScreen-(yBottom-yTop))*bytesPerPixel;
pDstBuf = gFrameBuffer + dstStartRow + (DispDrvr_cyScreen -yBottom)*bytesPerPixel;
}
pSrcBuf =(BYTE *)gCursorData + srcStartRow;
pSrcMask =(BYTE *)gCursorMask + srcStartRow;
if (bLandscapeDisplay) {
for (row=yTop;row<yBottom;row++)
{
i=srcWidthB;
pSrcBuf += srcRowMarginB;
pSrcMask += srcRowMarginB;
while (i > 0)
{
if (i<4 || ((unsigned)pDstBuf & 0x3) || ((unsigned)pSrcBuf & 0x3))
{
*pDstBuf &= *pSrcMask;
*pDstBuf++ ^= *pSrcBuf;
pSrcMask++;
pSrcBuf++;
i-=1;
} else
{
*(unsigned *)pDstBuf &= *(unsigned *)pSrcMask;
*(unsigned *)pDstBuf ^= *(unsigned *)pSrcBuf;
pDstBuf+=4;
pSrcMask+=4;
pSrcBuf+=4;
i-=4;
}
}
pSrcMask += clipWidthB;
pSrcBuf += clipWidthB;
pDstBuf += dstMarginWidth;
}
} else {
pSrcBuf += srcRowMarginB;
pSrcMask += srcRowMarginB;
for (i=0;i<srcWidthB/bytesPerPixel;i++) {
for (row=yTop;row<yBottom;row++) {
for (j=0;j<bytesPerPixel;j++) {
*pDstBuf &= *(pSrcMask+j);
*pDstBuf++ ^= *(pSrcBuf+j);
}
pSrcBuf-=cursorWidthB;
pSrcMask-=cursorWidthB;
}
pSrcBuf +=srcMarginWidth+2;
pSrcMask +=srcMarginWidth+2;
pDstBuf +=dstMarginWidth;
}
}
}
LeaveCriticalSection(&displayMutex);
}
}
void DispDrvrDirtyRectDump2(LPCRECT prc,DWORD color)
{
WORD *pDstBuf;
WORD srcColor = (WORD)color;
DWORD xLeft,yTop,xRight,yBottom;
DWORD srcWidthB,dstMarginWidth;
DWORD dstStartRow;
if (bAllowOSFrameBufferUpdates)
{
xLeft = prc->left < 0 ? 0 : prc->left;
yTop = prc->top < 0 ? 0 : prc->top;
xRight = prc->right > gDibBufferWidth ? gDibBufferWidth : prc->right;
yBottom = prc->bottom > gDibBufferHeight ? gDibBufferHeight : prc->bottom;
if ((LONG)xLeft >= (LONG)xRight || (LONG)yTop >= (LONG)yBottom) return;
srcWidthB = xRight -xLeft;
dstStartRow = xLeft * DispDrvr_cyScreen;
dstMarginWidth = (DispDrvr_cyScreen-(yBottom-yTop));
pDstBuf = (WORD*)gFrameBuffer + dstStartRow + (DispDrvr_cyScreen -yBottom);
EnterCriticalSection(&displayMutex);
ellipse_core_ASM(srcColor, (dstMarginWidth+1)*2,srcWidthB,pDstBuf);
LeaveCriticalSection(&displayMutex);
}
}
void DispDrvrMoveCursor(INT32 xLocation,INT32 yLocation)
{
// First clear the cursor's old location
gDrawCursorFlag = FALSE;
DispDrvrDirtyRectDump(&gCursorRect);
// Now set the new location of the cursor and redraw
gCursorRect.left = xLocation - gxHot;
if (gCursorRect.left < 0) {
gCursorRect.left = 0;
}
gCursorRect.top = yLocation - gyHot;
if (gCursorRect.top < 0) {
gCursorRect.top = 0;
}
gCursorRect.right = xLocation - gxHot + CURSOR_XSIZE;
gCursorRect.bottom = yLocation - gyHot + CURSOR_YSIZE;
gDrawCursorFlag = TRUE;
DispDrvrDirtyRectDump(&gCursorRect);
}
#define VIDEO_REG_PATH TEXT("Drivers\\Display\\Intel")
#define VIDEO_ROW_RES TEXT("CxScreen")
#define VIDEO_COL_RES TEXT("CyScreen")
#define PIXEL_DEPTH TEXT("Bpp")
#define VIDEO_DISPLAY_TYPE TEXT("DisplayType")
#define VIDEO_BUFFER TEXT("UseFrameBuffer")
BOOL ReadRegistryData()
{
LONG regError;
HKEY hKey;
DWORD dwDataSize;
DWORD dwUsePhysicalFrameBuffer;
TCHAR DisplayType[64];
bpp=0;
DispDrvr_cyScreen = 0;
DispDrvr_cxScreen = 0;
dwUsePhysicalFrameBuffer = 0;
// Open the registry key
regError = RegOpenKeyEx(HKEY_LOCAL_MACHINE,VIDEO_REG_PATH,0,KEY_ALL_ACCESS,&hKey);
if (regError != ERROR_SUCCESS) {
DEBUGMSG(DEBUGZONE(0),(VIDEO_REG_PATH));
DEBUGMSG(DEBUGZONE(0),(TEXT("Failed opening \\Drivers\\Display\\Intel\r\n")));
return (FALSE);
}
// Display width
dwDataSize = sizeof(DispDrvr_cxScreen);
regError = RegQueryValueEx(hKey,VIDEO_ROW_RES, NULL, NULL,(LPBYTE)&DispDrvr_cxScreen,&dwDataSize);
if (regError != ERROR_SUCCESS) {
DEBUGMSG(DEBUGZONE(0),(TEXT("Failed to get display x value, Error 0x%X\r\n"),regError));
return (FALSE);
}
// Display height
dwDataSize = sizeof(DispDrvr_cyScreen);
regError = RegQueryValueEx(hKey,VIDEO_COL_RES,NULL,NULL,(LPBYTE)&DispDrvr_cyScreen,&dwDataSize);
if (regError != ERROR_SUCCESS) {
DEBUGMSG(DEBUGZONE(0),(TEXT("Failed to get display y value, Error 0x%X\r\n"),regError));
return (FALSE);
}
// Color depth
dwDataSize = sizeof(bpp);
regError=RegQueryValueEx(hKey,PIXEL_DEPTH,NULL,NULL,(LPBYTE)&bpp,&dwDataSize);
if (regError != ERROR_SUCCESS) {
bpp=0;
}
// Display Type
dwDataSize = sizeof(DisplayType);
regError = RegQueryValueEx(hKey,VIDEO_DISPLAY_TYPE,NULL,NULL,(LPBYTE)DisplayType,&dwDataSize);
if (regError != ERROR_SUCCESS) {
DEBUGMSG(DEBUGZONE(0),(TEXT("Failed to get display type, Error 0x%X\r\n"),regError));
return (FALSE);
}
// Decide whether to use expose the physical frame buffer to GDI, or an off
// screen buffer.
dwDataSize = sizeof(dwUsePhysicalFrameBuffer);
regError = RegQueryValueEx(hKey,VIDEO_BUFFER,NULL,NULL,(LPBYTE)&dwUsePhysicalFrameBuffer,&dwDataSize);
if (regError != ERROR_SUCCESS) {
DEBUGMSG(DEBUGZONE(0),(TEXT("Failed to get display frame buffer value, Error 0x%X\r\n"),regError));
}
RegCloseKey (hKey);
RETAILMSG(0, (TEXT("Done getting Registry values:\r\nbpp: 0x%x\r\n CxScreen: 0x%x\r\n CyScreen: 0x%x\r\nDisplay Type: %s\r\n"), bpp, DispDrvr_cxScreen, DispDrvr_cyScreen,DisplayType));
if (_wcsicmp(DisplayType, TEXT("LTM04C380K")) == 0)
nDisplayType = LTM04C380K;
else if (_wcsicmp(DisplayType, TEXT("LTM04C387S")) == 0)
nDisplayType = LTM04C387S;
else if (_wcsicmp(DisplayType, TEXT("LQ039Q2DS54")) == 0)
nDisplayType = LQ039Q2DS54;
else if (_wcsicmp(DisplayType, TEXT("LM8V31")) == 0)
nDisplayType = LM8V31;
else if (_wcsicmp(DisplayType, TEXT("LM057QCTT03")) == 0)
nDisplayType = LM057QCTT03;
else if (_wcsicmp(DisplayType, TEXT("TFTQVGA")) == 0)
nDisplayType = TFTQVGA;
else if (_wcsicmp(DisplayType, TEXT("LQ64D341")) == 0)
nDisplayType = LQ64D341;
//JiangFQ add 2004/5/21 01:07⌨️ 快捷键说明
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