[blight] 18896: Add IntEngAlphaBlend and NtGdiAlphaBlend functions, EngAlphaBlend (the real implementation) is still missing.
Add IntEngAlphaBlend and NtGdiAlphaBlend functions, EngAlphaBlend (the real implementation) is still missing. Modified: trunk/reactos/subsys/win32k/eng/bitblt.c Modified: trunk/reactos/subsys/win32k/include/inteng.h Modified: trunk/reactos/subsys/win32k/objects/bitmaps.c _____
Modified: trunk/reactos/subsys/win32k/eng/bitblt.c --- trunk/reactos/subsys/win32k/eng/bitblt.c 2005-10-30 22:14:11 UTC (rev 18895) +++ trunk/reactos/subsys/win32k/eng/bitblt.c 2005-10-30 22:16:30 UTC (rev 18896) @@ -889,6 +889,62 @@
return ret; }
+BOOL STDCALL +IntEngAlphaBlend(IN SURFOBJ *Dest, + IN SURFOBJ *Source, + IN CLIPOBJ *Clip, + IN XLATEOBJ *ColorTranslation, + IN PRECTL DestRect, + IN PRECTL SourceRect, + IN BLENDOBJ *BlendObj) +{ + BOOL ret = FALSE; + BITMAPOBJ *DestObj; + BITMAPOBJ *SourceObj; + + ASSERT(Dest); + DestObj = CONTAINING_RECORD(Dest, BITMAPOBJ, SurfObj); + ASSERT(DestObj); + + ASSERT(Source); + SourceObj = CONTAINING_RECORD(Source, BITMAPOBJ, SurfObj); + ASSERT(SourceObj); + + ASSERT(DestRect); + ASSERT(SourceRect); + + BITMAPOBJ_LockBitmapBits(DestObj); + MouseSafetyOnDrawStart(Dest, DestRect->left, DestRect->top, + DestRect->right, DestRect->bottom); + + if (Source != Dest) + BITMAPOBJ_LockBitmapBits(SourceObj); + MouseSafetyOnDrawStart(Source, SourceRect->left, SourceRect->top, + SourceRect->right, SourceRect->bottom); + + /* Call the driver's DrvAlphaBlend if available */ + if (DestObj->flHooks & HOOK_ALPHABLEND) + { + ret = GDIDEVFUNCS(Dest).AlphaBlend( + Dest, Source, Clip, ColorTranslation, + DestRect, SourceRect, BlendObj); + } + + if (! ret) + { + ret = EngAlphaBlend(Dest, Source, Clip, ColorTranslation, + DestRect, SourceRect, BlendObj); + } + + MouseSafetyOnDrawEnd(Source); + if (Source != Dest) + BITMAPOBJ_UnlockBitmapBits(SourceObj); + MouseSafetyOnDrawEnd(Dest); + BITMAPOBJ_UnlockBitmapBits(DestObj); + + return ret; +} + /**** REACTOS FONT RENDERING CODE *********************************************/
/* renders the alpha mask bitmap */ _____
Modified: trunk/reactos/subsys/win32k/include/inteng.h --- trunk/reactos/subsys/win32k/include/inteng.h 2005-10-30 22:14:11 UTC (rev 18895) +++ trunk/reactos/subsys/win32k/include/inteng.h 2005-10-30 22:16:30 UTC (rev 18896) @@ -162,5 +162,14 @@
IN LONG y, IN RECTL *prcl);
+BOOL STDCALL +IntEngAlphaBlend(IN SURFOBJ *Dest, + IN SURFOBJ *Source, + IN CLIPOBJ *Clip, + IN XLATEOBJ *ColorTranslation, + IN PRECTL DestRect, + IN PRECTL SourceRect, + IN BLENDOBJ *BlendObj);
+ #endif /* _WIN32K_INTENG_H */ _____
Modified: trunk/reactos/subsys/win32k/objects/bitmaps.c --- trunk/reactos/subsys/win32k/objects/bitmaps.c 2005-10-30 22:14:11 UTC (rev 18895) +++ trunk/reactos/subsys/win32k/objects/bitmaps.c 2005-10-30 22:16:30 UTC (rev 18896) @@ -1284,6 +1284,145 @@
return Status; }
+BOOL STDCALL +NtGdiAlphaBlend( + HDC hDCDest, + INT XOriginDest, + INT YOriginDest, + INT WidthDest, + INT HeightDest, + HDC hDCSrc, + INT XOriginSrc, + INT YOriginSrc, + INT WidthSrc, + INT HeightSrc, + BLENDFUNCTION BlendFunc) +{ + PDC DCDest = NULL; + PDC DCSrc = NULL; + BITMAPOBJ *BitmapDest, *BitmapSrc; + RECTL DestRect, SourceRect; + BOOL Status; + XLATEOBJ *XlateObj; + BLENDOBJ BlendObj = {BlendFunc}; + HPALETTE SourcePalette = 0, DestPalette = 0; + + DCDest = DC_LockDc(hDCDest); + if (NULL == DCDest) + { + DPRINT1("Invalid destination dc handle (0x%08x) passed to NtGdiAlphaBlend\n", hDCDest); + SetLastWin32Error(ERROR_INVALID_HANDLE); + return FALSE; + } + if (DCDest->IsIC) + { + DC_UnlockDc(DCDest); + /* Yes, Windows really returns TRUE in this case */ + return TRUE; + } + + if (hDCSrc != hDCDest) + { + DCSrc = DC_LockDc(hDCSrc); + if (NULL == DCSrc) + { + DC_UnlockDc(DCDest); + DPRINT1("Invalid source dc handle (0x%08x) passed to NtGdiBitBlt\n", hDCSrc); + SetLastWin32Error(ERROR_INVALID_HANDLE); + return FALSE; + } + if (DCSrc->IsIC) + { + DC_UnlockDc(DCSrc); + DC_UnlockDc(DCDest); + /* Yes, Windows really returns TRUE in this case */ + return TRUE; + } + } + else + { + DCSrc = DCDest; + } + + /* Offset the destination and source by the origin of their DCs. */ + XOriginDest += DCDest->w.DCOrgX; + YOriginDest += DCDest->w.DCOrgY; + XOriginSrc += DCSrc->w.DCOrgX; + YOriginSrc += DCSrc->w.DCOrgY; + + DestRect.left = XOriginDest; + DestRect.top = YOriginDest; + DestRect.right = XOriginDest + WidthDest; + DestRect.bottom = YOriginDest + HeightDest; + + SourceRect.left = XOriginSrc; + SourceRect.top = YOriginSrc; + SourceRect.right = XOriginSrc + WidthSrc; + SourceRect.bottom = YOriginSrc + HeightSrc; + + /* Determine surfaces to be used in the bitblt */ + BitmapDest = BITMAPOBJ_LockBitmap(DCDest->w.hBitmap); + if (DCSrc->w.hBitmap == DCDest->w.hBitmap) + BitmapSrc = BitmapDest; + else + BitmapSrc = BITMAPOBJ_LockBitmap(DCSrc->w.hBitmap); + + /* Create the XLATEOBJ. */ + if (DCDest->w.hPalette != 0) + DestPalette = DCDest->w.hPalette; + if (DCSrc->w.hPalette != 0) + SourcePalette = DCSrc->w.hPalette; + + /* KB41464 details how to convert between mono and color */ + if (DCDest->w.bitsPerPixel == 1 && DCSrc->w.bitsPerPixel == 1) + { + XlateObj = NULL; + } + else + { + if (DCDest->w.bitsPerPixel == 1) + { + XlateObj = IntEngCreateMonoXlate(0, DestPalette, SourcePalette, DCSrc->w.backgroundColor); + } + else if (DCSrc->w.bitsPerPixel == 1) + { + XlateObj = IntEngCreateSrcMonoXlate(DestPalette, DCSrc->w.backgroundColor, DCSrc->w.textColor); + } + else + { + XlateObj = IntEngCreateXlate(0, 0, DestPalette, SourcePalette); + } + if (NULL == XlateObj) + { + BITMAPOBJ_UnlockBitmap(BitmapDest); + if (BitmapSrc != BitmapDest) + BITMAPOBJ_UnlockBitmap(BitmapSrc); + DC_UnlockDc(DCDest); + if (hDCSrc != hDCDest) + DC_UnlockDc(DCSrc); + SetLastWin32Error(ERROR_NO_SYSTEM_RESOURCES); + return FALSE; + } + } + + /* Perform the alpha blend operation */ + Status = IntEngAlphaBlend(&BitmapDest->SurfObj, &BitmapSrc->SurfObj, + DCDest->CombinedClip, XlateObj, + &DestRect, &SourceRect, &BlendObj); + + if (XlateObj != NULL) + EngDeleteXlate(XlateObj); + + BITMAPOBJ_UnlockBitmap(BitmapDest); + if (BitmapSrc != BitmapDest) + BITMAPOBJ_UnlockBitmap(BitmapSrc); + DC_UnlockDc(DCDest); + if (hDCSrc != hDCDest) + DC_UnlockDc(DCSrc); + + return Status; +} + /* Internal Functions */
INT FASTCALL
-
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