pcsx2/plugins/GSdx/GSDirtyRect.cpp

85 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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA 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;
}
const GSVector4i GSDirtyRect::GetDirtyRect(const GIFRegTEX0& TEX0) const
{
GSVector4i r;
const GSVector2i src = GSLocalMemory::m_psm[psm].bs;
if(psm != TEX0.PSM)
{
const GSVector2i dst = GSLocalMemory::m_psm[TEX0.PSM].bs;
r.left = left * dst.x / src.x;
r.top = top * dst.y / src.y;
r.right = right * dst.x / src.x;
r.bottom = bottom * dst.y / src.y;
}
else
{
r = GSVector4i(left, top, right, bottom).ralign<Align_Outside>(src);
}
return r;
}
//
const GSVector4i GSDirtyRectList::GetDirtyRectAndClear(const GIFRegTEX0& TEX0, const GSVector2i& size)
{
if(!empty())
{
GSVector4i r(INT_MAX, INT_MAX, 0, 0);
for(const auto& dirty_rect : *this)
{
r = r.runion(dirty_rect.GetDirtyRect(TEX0));
}
clear();
const GSVector2i bs = GSLocalMemory::m_psm[TEX0.PSM].bs;
return r.ralign<Align_Outside>(bs).rintersect(GSVector4i(0, 0, size.x, size.y));
}
return GSVector4i::zero();
}