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[WIN32K]

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- Improve performance of XFORMOBJ_bXformFixPoints by getting the integer values from the FLOATOBJ once instead of on every iteration

svn path=/trunk/; revision=64261
This commit is contained in:
Timo Kreuzer
2014-09-24 21:27:47 +00:00
parent ae5b9eb418
commit cdb844e88c
1 changed files with 23 additions and 11 deletions
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34
reactos/win32ss/gdi/ntgdi/xformobj.c
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@@ -1,7 +1,7 @@
/*
* PROJECT: ReactOS win32 kernel mode subsystem
* LICENSE: GPL - See COPYING in the top level directory
* FILE: subsystems/win32/win32k/objects/xformobj.c
* FILE: win32ss/gdi/ntgdi/xformobj.c
* PURPOSE: XFORMOBJ API
* PROGRAMMER: Timo Kreuzer
*/
@@ -195,8 +195,8 @@ XFORMOBJ_iCombine(
MATRIX mx;
PMATRIX pmx, pmx1, pmx2;
pmx = XFORMOBJ_pmx(pxo);
pmx1 =XFORMOBJ_pmx(pxo1);
/* Get the source matrices */
pmx1 = XFORMOBJ_pmx(pxo1);
pmx2 = XFORMOBJ_pmx(pxo2);
/* Do a 3 x 3 matrix multiplication with mx as destinantion */
@@ -210,6 +210,7 @@ XFORMOBJ_iCombine(
FLOATOBJ_Add(&mx.efDy, &pmx2->efDy);
/* Copy back */
pmx = XFORMOBJ_pmx(pxo);
*pmx = mx;
/* Update accelerators and return complexity */
@@ -322,11 +323,14 @@ XFORMOBJ_bXformFixPoints(
if (flAccel & XFORM_UNITY)
{
/* 1-scale integer transform */
LONG lM12 = FLOATOBJ_GetLong(&pmx->efM12);
LONG lM21 = FLOATOBJ_GetLong(&pmx->efM21);
i = cPoints - 1;
do
{
LONG x = pptIn[i].x + pptIn[i].y * FLOATOBJ_GetLong(&pmx->efM21);
LONG y = pptIn[i].y + pptIn[i].x * FLOATOBJ_GetLong(&pmx->efM12);
LONG x = pptIn[i].x + pptIn[i].y * lM21;
LONG y = pptIn[i].y + pptIn[i].x * lM12;
pptOut[i].y = y;
pptOut[i].x = x;
}
@@ -335,25 +339,33 @@ XFORMOBJ_bXformFixPoints(
else if (flAccel & XFORM_SCALE)
{
/* Diagonal integer transform */
LONG lM11 = FLOATOBJ_GetLong(&pmx->efM11);
LONG lM22 = FLOATOBJ_GetLong(&pmx->efM22);
i = cPoints - 1;
do
{
pptOut[i].x = pptIn[i].x * FLOATOBJ_GetLong(&pmx->efM11);
pptOut[i].y = pptIn[i].y * FLOATOBJ_GetLong(&pmx->efM22);
pptOut[i].x = pptIn[i].x * lM11;
pptOut[i].y = pptIn[i].y * lM22;
}
while (--i >= 0);
}
else
{
/* Full integer transform */
LONG lM11 = FLOATOBJ_GetLong(&pmx->efM11);
LONG lM12 = FLOATOBJ_GetLong(&pmx->efM12);
LONG lM21 = FLOATOBJ_GetLong(&pmx->efM21);
LONG lM22 = FLOATOBJ_GetLong(&pmx->efM22);
i = cPoints - 1;
do
{
LONG x;
x = pptIn[i].x * FLOATOBJ_GetLong(&pmx->efM11);
x += pptIn[i].y * FLOATOBJ_GetLong(&pmx->efM21);
pptOut[i].y = pptIn[i].y * FLOATOBJ_GetLong(&pmx->efM22);
pptOut[i].y += pptIn[i].x * FLOATOBJ_GetLong(&pmx->efM12);
x = pptIn[i].x * lM11;
x += pptIn[i].y * lM21;
pptOut[i].y = pptIn[i].y * lM22;
pptOut[i].y += pptIn[i].x * lM12;
pptOut[i].x = x;
}
while (--i >= 0);