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gdi32: Move coordinate checks into the common part of GdiAlphaBlend.

This commit is contained in:
Alexandre Julliard 2011-09-13 17:10:37 +02:00
parent 271530b3dd
commit 497c3982b6
2 changed files with 19 additions and 12 deletions
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18
dlls/gdi32/bitblt.c
View File

@ -669,7 +669,23 @@ BOOL WINAPI GdiAlphaBlend(HDC hdcDst, int xDst, int yDst, int widthDst, int heig
blendFunction.BlendOp, blendFunction.BlendFlags,
blendFunction.SourceConstantAlpha, blendFunction.AlphaFormat );
if (!ret) ret = dst_dev->funcs->pAlphaBlend( dst_dev, &dst, src_dev, &src, blendFunction );
if (src.x < 0 || src.y < 0 || src.width < 0 || src.height < 0 ||
(dcSrc->header.type == OBJ_MEMDC &&
(src.width > dcSrc->vis_rect.right - dcSrc->vis_rect.left - src.x ||
src.height > dcSrc->vis_rect.bottom - dcSrc->vis_rect.top - src.y)))
{
WARN( "Invalid src coords: (%d,%d), size %dx%d\n", src.x, src.y, src.width, src.height );
SetLastError( ERROR_INVALID_PARAMETER );
ret = FALSE;
}
else if (dst.width < 0 || dst.height < 0)
{
WARN( "Invalid dst coords: (%d,%d), size %dx%d\n", dst.x, dst.y, dst.width, dst.height );
SetLastError( ERROR_INVALID_PARAMETER );
ret = FALSE;
}
else if (!ret) ret = dst_dev->funcs->pAlphaBlend( dst_dev, &dst, src_dev, &src, blendFunction );
release_dc_ptr( dcDst );
}
release_dc_ptr( dcSrc );

13
dlls/winex11.drv/xrender.c
View File

@ -2396,22 +2396,13 @@ static BOOL xrenderdrv_AlphaBlend( PHYSDEV dst_dev, struct bitblt_coords *dst,
double xscale, yscale;
BOOL use_repeat;
if (src->x < 0 || src->y < 0 || src->width < 0 || src->height < 0 ||
src->width > physdev_src->x11dev->drawable_rect.right - physdev_src->x11dev->drawable_rect.left - src->x ||
src->height > physdev_src->x11dev->drawable_rect.bottom - physdev_src->x11dev->drawable_rect.top - src->y)
{
WARN( "Invalid src coords: (%d,%d), size %dx%d\n", src->x, src->y, src->width, src->height );
SetLastError( ERROR_INVALID_PARAMETER );
return FALSE;
}
if (!X11DRV_XRender_Installed || src_dev->funcs != dst_dev->funcs)
{
dst_dev = GET_NEXT_PHYSDEV( dst_dev, pAlphaBlend );
return dst_dev->funcs->pAlphaBlend( dst_dev, dst, src_dev, src, blendfn );
}
if (physdev_src->x11dev != physdev_dst->x11dev) X11DRV_LockDIBSection( physdev_src->x11dev, DIB_Status_GdiMod );
if (physdev_src != physdev_dst) X11DRV_LockDIBSection( physdev_src->x11dev, DIB_Status_GdiMod );
X11DRV_LockDIBSection( physdev_dst->x11dev, DIB_Status_GdiMod );
dst_pict = get_xrender_picture( physdev_dst->x11dev );
@ -2460,7 +2451,7 @@ static BOOL xrenderdrv_AlphaBlend( PHYSDEV dst_dev, struct bitblt_coords *dst,
wine_tsx11_unlock();
LeaveCriticalSection( &xrender_cs );
if (physdev_src->x11dev != physdev_dst->x11dev) X11DRV_UnlockDIBSection( physdev_src->x11dev, FALSE );
if (physdev_src != physdev_dst) X11DRV_UnlockDIBSection( physdev_src->x11dev, FALSE );
X11DRV_UnlockDIBSection( physdev_dst->x11dev, TRUE );
return TRUE;
}