pcsx2/plugins/GSdx/GSDirtyRect.cpp

86 lines
2.0 KiB
C++

/*
* Copyright (C) 2007-2009 Gabest
* http://www.gabest.org
*
* This Program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This Program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
* http://www.gnu.org/copyleft/gpl.html
*
*/
#include "StdAfx.h"
#include "GSDirtyRect.h"
GSDirtyRect::GSDirtyRect()
: psm(PSM_PSMCT32)
{
left = top = right = bottom = 0;
}
GSDirtyRect::GSDirtyRect(const GSVector4i& r, uint32 psm)
: psm(psm)
{
left = r.left;
top = r.top;
right = r.right;
bottom = r.bottom;
}
GSVector4i GSDirtyRect::GetDirtyRect(const GIFRegTEX0& TEX0)
{
GSVector4i r;
GSVector2i src = GSLocalMemory::m_psm[psm].bs;
if(psm != TEX0.PSM)
{
GSVector2i dst = GSLocalMemory::m_psm[TEX0.PSM].bs;
r.left = MulDiv(left, dst.x, src.x);
r.right = MulDiv(right, dst.x, src.x);
r.top = MulDiv(top, dst.y, src.y);
r.bottom = MulDiv(bottom, dst.y, src.y);
}
else
{
r.left = left & ~(src.x - 1);
r.right = (right + (src.x - 1) /* + 1 */) & ~(src.x - 1);
r.top = top & ~(src.y - 1);
r.bottom = (bottom + (src.y - 1) /* + 1 */) & ~(src.y - 1);
}
return r;
}
//
GSVector4i GSDirtyRectList::GetDirtyRectAndClear(const GIFRegTEX0& TEX0, const GSVector2i& size)
{
if(!empty())
{
GSVector4i r(INT_MAX, INT_MAX, 0, 0);
for(list<GSDirtyRect>::iterator i = begin(); i != end(); i++)
{
r = r.runion(i->GetDirtyRect(TEX0));
}
clear();
return r.rintersect(GSVector4i(0, 0, size.x, size.y));
}
return GSVector4i::zero();
}