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- Don't allocate 0 bytes in EngCreateBitmap. Patch by Waldo Alvarez Ca�izares.

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- Fix distortion by StretchBlt. Patch based on investigations by Waldo Alvarez Ca�izares.

svn path=/trunk/; revision=8175
This commit is contained in:
Filip Navara 2004-02-14 22:24:54 +00:00
parent 74974a631d
commit a3f6dab278
3 changed files with 18 additions and 11 deletions
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4
reactos/subsys/win32k/dib/dib16bpp.c
View file

@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: dib16bpp.c,v 1.17 2003/12/23 19:28:23 navaraf Exp $ */
/* $Id: dib16bpp.c,v 1.18 2004/02/14 22:24:54 navaraf Exp $ */
#undef WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <stdlib.h>
@ -422,7 +422,7 @@ void ScaleRectAvg16(PIXEL *Target, PIXEL *Source, int SrcWidth, int SrcHeight,
int TgtWidth, int TgtHeight, int srcPitch, int dstPitch)
{
int NumPixels = TgtHeight;
int IntPart = (SrcHeight / TgtHeight) * (SrcWidth+1);
int IntPart = (SrcHeight / TgtHeight) * SrcWidth;
int FractPart = SrcHeight % TgtHeight;
int Mid = TgtHeight / 2;
int E = 0;

4
reactos/subsys/win32k/dib/dib8bpp.c
View file

@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: dib8bpp.c,v 1.12 2003/12/23 19:28:23 navaraf Exp $ */
/* $Id: dib8bpp.c,v 1.13 2004/02/14 22:24:54 navaraf Exp $ */
#undef WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <stdlib.h>
@ -393,7 +393,7 @@ void ScaleRectAvg8(PIXEL *Target, PIXEL *Source, int SrcWidth, int SrcHeight,
int TgtWidth, int TgtHeight, int srcPitch, int dstPitch)
{
int NumPixels = TgtHeight;
int IntPart = (SrcHeight / TgtHeight) * (SrcWidth+1);
int IntPart = (SrcHeight / TgtHeight) * SrcWidth;
int FractPart = SrcHeight % TgtHeight;
int Mid = TgtHeight / 2;
int E = 0;

21
reactos/subsys/win32k/eng/surface.c
View file

@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: surface.c,v 1.31 2004/02/08 21:37:52 weiden Exp $
/* $Id: surface.c,v 1.32 2004/02/14 22:24:54 navaraf Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -351,15 +351,22 @@ EngCreateBitmap(IN SIZEL Size,
SurfObj->pvBits = UncompressedBits;
} else
{
if(Flags & BMF_USERMEM)
if (SurfObj->cjBits == 0)
{
SurfObj->pvBits = EngAllocUserMem(SurfObj->cjBits, 0);
} else {
if(Flags & BMF_NOZEROINIT)
SurfObj->pvBits = NULL;
}
else
{
if(Flags & BMF_USERMEM)
{
SurfObj->pvBits = EngAllocMem(0, SurfObj->cjBits, 0);
SurfObj->pvBits = EngAllocUserMem(SurfObj->cjBits, 0);
} else {
SurfObj->pvBits = EngAllocMem(FL_ZERO_MEMORY, SurfObj->cjBits, 0);
if(Flags & BMF_NOZEROINIT)
{
SurfObj->pvBits = EngAllocMem(0, SurfObj->cjBits, 0);
} else {
SurfObj->pvBits = EngAllocMem(FL_ZERO_MEMORY, SurfObj->cjBits, 0);
}
}
}
}