/*
* @implemented
*/
BOOL
APIENTRY
NtGdiEngAlphaBlend(IN SURFOBJ *psoDest,
IN SURFOBJ *psoSource,
IN CLIPOBJ *ClipRegion,
IN XLATEOBJ *ColorTranslation,
IN PRECTL upDestRect,
IN PRECTL upSourceRect,
IN BLENDOBJ *BlendObj)
{
RECTL DestRect;
RECTL SourceRect;
_SEH2_TRY
{
ProbeForRead(upDestRect, sizeof(RECTL), 1);
RtlCopyMemory(&DestRect,upDestRect, sizeof(RECTL));
ProbeForRead(upSourceRect, sizeof(RECTL), 1);
RtlCopyMemory(&SourceRect, upSourceRect, sizeof(RECTL));
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
_SEH2_YIELD(return FALSE);
}
_SEH2_END;
return EngAlphaBlend(psoDest, psoSource, ClipRegion, ColorTranslation, &DestRect, &SourceRect, BlendObj);
}
BOOL
APIENTRY
IntEngAlphaBlend(
_Inout_ SURFOBJ *psoDest,
_In_ SURFOBJ *psoSource,
_In_opt_ CLIPOBJ *pco,
_In_opt_ XLATEOBJ *pxlo,
_In_ RECTL *prclDest,
_In_ RECTL *prclSrc,
_In_ BLENDOBJ *pBlendObj)
{
BOOL ret = FALSE;
SURFACE *psurfDest;
ASSERT(psoDest);
ASSERT(psoSource);
ASSERT(prclDest);
ASSERT(prclSrc);
//ASSERT(pBlendObj);
/* If no clip object is given, use trivial one */
if (!pco) pco = &gxcoTrivial.ClipObj;
/* Check if there is anything to draw */
if ((pco->rclBounds.left >= pco->rclBounds.right) ||
(pco->rclBounds.top >= pco->rclBounds.bottom))
{
/* Nothing to do */
return TRUE;
}
psurfDest = CONTAINING_RECORD(psoDest, SURFACE, SurfObj);
/* Call the driver's DrvAlphaBlend if available */
if (psurfDest->flags & HOOK_ALPHABLEND)
{
ret = GDIDEVFUNCS(psoDest).AlphaBlend(
psoDest, psoSource, pco, pxlo,
prclDest, prclSrc, pBlendObj);
}
if (!ret)
{
ret = EngAlphaBlend(psoDest, psoSource, pco, pxlo,
prclDest, prclSrc, pBlendObj);
}
return ret;
}
BOOL APIENTRY
IntEngAlphaBlend(IN SURFOBJ *psoDest,
IN SURFOBJ *psoSource,
IN CLIPOBJ *ClipRegion,
IN XLATEOBJ *ColorTranslation,
IN PRECTL DestRect,
IN PRECTL SourceRect,
IN BLENDOBJ *BlendObj)
{
BOOL ret = FALSE;
SURFACE *psurfDest;
SURFACE *psurfSource;
ASSERT(psoDest);
psurfDest = CONTAINING_RECORD(psoDest, SURFACE, SurfObj);
ASSERT(psoSource);
psurfSource = CONTAINING_RECORD(psoSource, SURFACE, SurfObj);
ASSERT(DestRect);
ASSERT(SourceRect);
/* Check if there is anything to draw */
if (ClipRegion != NULL &&
(ClipRegion->rclBounds.left >= ClipRegion->rclBounds.right ||
ClipRegion->rclBounds.top >= ClipRegion->rclBounds.bottom))
{
/* Nothing to do */
return TRUE;
}
/* Call the driver's DrvAlphaBlend if available */
if (psurfDest->flags & HOOK_ALPHABLEND)
{
ret = GDIDEVFUNCS(psoDest).AlphaBlend(
psoDest, psoSource, ClipRegion, ColorTranslation,
DestRect, SourceRect, BlendObj);
}
if (! ret)
{
ret = EngAlphaBlend(psoDest, psoSource, ClipRegion, ColorTranslation,
DestRect, SourceRect, BlendObj);
}
return ret;
}
