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[WIN32K]

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Fix major bug in EngModifySurface: when pvScan0 and lDelta are passed, the surface is converted to type STYPE_BITMAP. pvBits is calculated accordingly and surface flags are updated according to flSurface parameter. Fixes crash with Intel 810 graphic drivers. Thanks to Julio Carchi for testing/helping with debugging. CORE-7821 #resolve

svn path=/trunk/; revision=66094
This commit is contained in:
Timo Kreuzer 2015-01-26 22:11:34 +00:00
parent 7c751fe5dc
commit 320306b310
2 changed files with 49 additions and 4 deletions
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50
reactos/win32ss/gdi/eng/surface.c
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@ -452,8 +452,6 @@ EngModifySurface(
ppdev = (PDEVOBJ*)hdev;
pso = &psurf->SurfObj;
pso->dhsurf = dhsurf;
pso->lDelta = lDelta;
pso->pvScan0 = pvScan0;
/* Associate the hdev */
pso->hdev = hdev;
@ -468,6 +466,54 @@ EngModifySurface(
SURFACE_vSetPalette(psurf, ppal);
PALETTE_ShareUnlockPalette(ppal);
/* Check if the caller passed bitmap bits */
if ((pvScan0 != NULL) && (lDelta != 0))
{
/* Update the fields */
pso->pvScan0 = pvScan0;
pso->lDelta = lDelta;
/* This is a bitmap now! */
pso->iType = STYPE_BITMAP;
/* Check memory layout */
if (lDelta > 0)
{
/* Topdown is the normal way */
pso->cjBits = lDelta * pso->sizlBitmap.cy;
pso->pvBits = pso->pvScan0;
pso->fjBitmap |= BMF_TOPDOWN;
}
else
{
/* Inversed bitmap (bottom up) */
pso->cjBits = (-lDelta) * pso->sizlBitmap.cy;
pso->pvBits = (PCHAR)pso->pvScan0 - pso->cjBits - lDelta;
pso->fjBitmap &= ~BMF_TOPDOWN;
}
/* Update surface flags */
if (flSurface & MS_NOTSYSTEMMEMORY)
pso->fjBitmap |= BMF_NOTSYSMEM;
else
pso->fjBitmap &= ~BMF_NOTSYSMEM;
if (flSurface & MS_SHAREDACCESS)
psurf->flags |= SHAREACCESS_SURFACE;
else
psurf->flags &= ~SHAREACCESS_SURFACE;
}
else
{
/* Set bits to NULL */
pso->pvBits = NULL;
pso->pvScan0 = NULL;
pso->lDelta = 0;
/* Set appropriate surface type */
if (pso->iType != STYPE_DEVICE)
pso->iType = STYPE_DEVBITMAP;
}
SURFACE_ShareUnlockSurface(psurf);
return TRUE;

3
reactos/win32ss/gdi/eng/surface.h
View file

@ -49,7 +49,7 @@ enum _SURFACEFLAGS
//#define HOOK_FILLPATH 0x00000040
//#define HOOK_STROKEANDFILLPATH 0x00000080
//#define HOOK_LINETO 0x00000100
//#define SHAREACCESS_SURFACE 0x00000200
SHAREACCESS_SURFACE = 0x00000200,
//#define HOOK_COPYBITS 0x00000400
//#define REDIRECTION_SURFACE 0x00000800 // ?
//#define HOOK_MOVEPANNING 0x00000800
@ -82,7 +82,6 @@ enum _SURFACEFLAGS
};
#define BMF_POOLALLOC 0x100
#define PDEV_SURFACE 0x80000000
/* Internal interface */