1154 lines
25 KiB
C++
1154 lines
25 KiB
C++
/*
|
|
* Copyright (C) 2003-2006 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 <string.h>
|
|
#include <math.h>
|
|
#include <vector>
|
|
#include <algorithm>
|
|
#include "Rasterizer.h"
|
|
|
|
Rasterizer::Rasterizer() : mpPathTypes(NULL), mpPathPoints(NULL), mPathPoints(0), mpOverlayBuffer(NULL)
|
|
{
|
|
mOverlayWidth = mOverlayHeight = 0;
|
|
mPathOffsetX = mPathOffsetY = 0;
|
|
mOffsetX = mOffsetY = 0;
|
|
}
|
|
|
|
Rasterizer::~Rasterizer()
|
|
{
|
|
_TrashPath();
|
|
_TrashOverlay();
|
|
}
|
|
|
|
void Rasterizer::_TrashPath()
|
|
{
|
|
delete [] mpPathTypes;
|
|
delete [] mpPathPoints;
|
|
mpPathTypes = NULL;
|
|
mpPathPoints = NULL;
|
|
mPathPoints = 0;
|
|
}
|
|
|
|
void Rasterizer::_TrashOverlay()
|
|
{
|
|
delete [] mpOverlayBuffer;
|
|
mpOverlayBuffer = NULL;
|
|
}
|
|
|
|
void Rasterizer::_ReallocEdgeBuffer(int edges)
|
|
{
|
|
mEdgeHeapSize = edges;
|
|
mpEdgeBuffer = (Edge*)realloc(mpEdgeBuffer, sizeof(Edge)*edges);
|
|
}
|
|
|
|
void Rasterizer::_EvaluateBezier(int ptbase, bool fBSpline)
|
|
{
|
|
const POINT* pt0 = mpPathPoints + ptbase;
|
|
const POINT* pt1 = mpPathPoints + ptbase + 1;
|
|
const POINT* pt2 = mpPathPoints + ptbase + 2;
|
|
const POINT* pt3 = mpPathPoints + ptbase + 3;
|
|
|
|
double x0 = pt0->x;
|
|
double x1 = pt1->x;
|
|
double x2 = pt2->x;
|
|
double x3 = pt3->x;
|
|
double y0 = pt0->y;
|
|
double y1 = pt1->y;
|
|
double y2 = pt2->y;
|
|
double y3 = pt3->y;
|
|
|
|
double cx3, cx2, cx1, cx0, cy3, cy2, cy1, cy0;
|
|
|
|
if(fBSpline)
|
|
{
|
|
// 1 [-1 +3 -3 +1]
|
|
// - * [+3 -6 +3 0]
|
|
// 6 [-3 0 +3 0]
|
|
// [+1 +4 +1 0]
|
|
|
|
double _1div6 = 1.0/6.0;
|
|
|
|
cx3 = _1div6*(- x0+3*x1-3*x2+x3);
|
|
cx2 = _1div6*( 3*x0-6*x1+3*x2);
|
|
cx1 = _1div6*(-3*x0 +3*x2);
|
|
cx0 = _1div6*( x0+4*x1+1*x2);
|
|
|
|
cy3 = _1div6*(- y0+3*y1-3*y2+y3);
|
|
cy2 = _1div6*( 3*y0-6*y1+3*y2);
|
|
cy1 = _1div6*(-3*y0 +3*y2);
|
|
cy0 = _1div6*( y0+4*y1+1*y2);
|
|
}
|
|
else // bezier
|
|
{
|
|
// [-1 +3 -3 +1]
|
|
// [+3 -6 +3 0]
|
|
// [-3 +3 0 0]
|
|
// [+1 0 0 0]
|
|
|
|
cx3 = - x0+3*x1-3*x2+x3;
|
|
cx2 = 3*x0-6*x1+3*x2;
|
|
cx1 = -3*x0+3*x1;
|
|
cx0 = x0;
|
|
|
|
cy3 = - y0+3*y1-3*y2+y3;
|
|
cy2 = 3*y0-6*y1+3*y2;
|
|
cy1 = -3*y0+3*y1;
|
|
cy0 = y0;
|
|
}
|
|
|
|
//
|
|
// This equation is from Graphics Gems I.
|
|
//
|
|
// The idea is that since we're approximating a cubic curve with lines,
|
|
// any error we incur is due to the curvature of the line, which we can
|
|
// estimate by calculating the maximum acceleration of the curve. For
|
|
// a cubic, the acceleration (second derivative) is a line, meaning that
|
|
// the absolute maximum acceleration must occur at either the beginning
|
|
// (|c2|) or the end (|c2+c3|). Our bounds here are a little more
|
|
// conservative than that, but that's okay.
|
|
//
|
|
// If the acceleration of the parametric formula is zero (c2 = c3 = 0),
|
|
// that component of the curve is linear and does not incur any error.
|
|
// If a=0 for both X and Y, the curve is a line segment and we can
|
|
// use a step size of 1.
|
|
|
|
double maxaccel1 = fabs(2*cy2) + fabs(6*cy3);
|
|
double maxaccel2 = fabs(2*cx2) + fabs(6*cx3);
|
|
|
|
double maxaccel = maxaccel1 > maxaccel2 ? maxaccel1 : maxaccel2;
|
|
double h = 1.0;
|
|
|
|
if(maxaccel > 8.0) h = sqrt(8.0 / maxaccel);
|
|
|
|
if(!fFirstSet) {firstp.x = (LONG)cx0; firstp.y = (LONG)cy0; lastp = firstp; fFirstSet = true;}
|
|
|
|
for(double t = 0; t < 1.0; t += h)
|
|
{
|
|
double x = cx0 + t*(cx1 + t*(cx2 + t*cx3));
|
|
double y = cy0 + t*(cy1 + t*(cy2 + t*cy3));
|
|
_EvaluateLine(lastp.x, lastp.y, (int)x, (int)y);
|
|
}
|
|
|
|
double x = cx0 + cx1 + cx2 + cx3;
|
|
double y = cy0 + cy1 + cy2 + cy3;
|
|
_EvaluateLine(lastp.x, lastp.y, (int)x, (int)y);
|
|
}
|
|
|
|
void Rasterizer::_EvaluateLine(int pt1idx, int pt2idx)
|
|
{
|
|
const POINT* pt1 = mpPathPoints + pt1idx;
|
|
const POINT* pt2 = mpPathPoints + pt2idx;
|
|
|
|
_EvaluateLine(pt1->x, pt1->y, pt2->x, pt2->y);
|
|
}
|
|
|
|
void Rasterizer::_EvaluateLine(int x0, int y0, int x1, int y1)
|
|
{
|
|
if(lastp.x != x0 || lastp.y != y0)
|
|
{
|
|
_EvaluateLine(lastp.x, lastp.y, x0, y0);
|
|
}
|
|
|
|
if(!fFirstSet) {firstp.x = x0; firstp.y = y0; fFirstSet = true;}
|
|
lastp.x = x1; lastp.y = y1;
|
|
|
|
if(y1 > y0) // down
|
|
{
|
|
__int64 xacc = (__int64)x0 << 13;
|
|
|
|
// prestep y0 down
|
|
|
|
int dy = y1 - y0;
|
|
int y = ((y0 + 3)&~7) + 4;
|
|
int iy = y >> 3;
|
|
|
|
y1 = (y1 - 5) >> 3;
|
|
|
|
if(iy <= y1)
|
|
{
|
|
__int64 invslope = (__int64(x1 - x0) << 16) / dy;
|
|
|
|
while(mEdgeNext + y1 + 1 - iy > mEdgeHeapSize)
|
|
_ReallocEdgeBuffer(mEdgeHeapSize*2);
|
|
|
|
xacc += (invslope * (y - y0)) >> 3;
|
|
|
|
while(iy <= y1)
|
|
{
|
|
int ix = (int)((xacc + 32768) >> 16);
|
|
|
|
mpEdgeBuffer[mEdgeNext].next = mpScanBuffer[iy];
|
|
mpEdgeBuffer[mEdgeNext].posandflag = ix*2 + 1;
|
|
|
|
mpScanBuffer[iy] = mEdgeNext++;
|
|
|
|
++iy;
|
|
xacc += invslope;
|
|
}
|
|
}
|
|
}
|
|
else if(y1 < y0) // up
|
|
{
|
|
__int64 xacc = (__int64)x1 << 13;
|
|
|
|
// prestep y1 down
|
|
|
|
int dy = y0 - y1;
|
|
int y = ((y1 + 3)&~7) + 4;
|
|
int iy = y >> 3;
|
|
|
|
y0 = (y0 - 5) >> 3;
|
|
|
|
if(iy <= y0)
|
|
{
|
|
__int64 invslope = (__int64(x0 - x1) << 16) / dy;
|
|
|
|
while(mEdgeNext + y0 + 1 - iy > mEdgeHeapSize)
|
|
_ReallocEdgeBuffer(mEdgeHeapSize*2);
|
|
|
|
xacc += (invslope * (y - y1)) >> 3;
|
|
|
|
while(iy <= y0)
|
|
{
|
|
int ix = (int)((xacc + 32768) >> 16);
|
|
|
|
mpEdgeBuffer[mEdgeNext].next = mpScanBuffer[iy];
|
|
mpEdgeBuffer[mEdgeNext].posandflag = ix*2;
|
|
|
|
mpScanBuffer[iy] = mEdgeNext++;
|
|
|
|
++iy;
|
|
xacc += invslope;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bool Rasterizer::BeginPath(HDC hdc)
|
|
{
|
|
_TrashPath();
|
|
|
|
return !!::BeginPath(hdc);
|
|
}
|
|
|
|
bool Rasterizer::EndPath(HDC hdc)
|
|
{
|
|
::CloseFigure(hdc);
|
|
|
|
if(::EndPath(hdc))
|
|
{
|
|
mPathPoints = GetPath(hdc, NULL, NULL, 0);
|
|
|
|
if(!mPathPoints)
|
|
return true;
|
|
|
|
mpPathTypes = (BYTE*)malloc(sizeof(BYTE) * mPathPoints);
|
|
mpPathPoints = (POINT*)malloc(sizeof(POINT) * mPathPoints);
|
|
|
|
if(mPathPoints == GetPath(hdc, mpPathPoints, mpPathTypes, mPathPoints))
|
|
return true;
|
|
}
|
|
|
|
::AbortPath(hdc);
|
|
|
|
return false;
|
|
}
|
|
|
|
bool Rasterizer::PartialBeginPath(HDC hdc, bool bClearPath)
|
|
{
|
|
if(bClearPath)
|
|
_TrashPath();
|
|
|
|
return !!::BeginPath(hdc);
|
|
}
|
|
|
|
bool Rasterizer::PartialEndPath(HDC hdc, long dx, long dy)
|
|
{
|
|
::CloseFigure(hdc);
|
|
|
|
if(::EndPath(hdc))
|
|
{
|
|
int nPoints;
|
|
BYTE* pNewTypes;
|
|
POINT* pNewPoints;
|
|
|
|
nPoints = GetPath(hdc, NULL, NULL, 0);
|
|
|
|
if(!nPoints)
|
|
return true;
|
|
|
|
pNewTypes = (BYTE*)realloc(mpPathTypes, (mPathPoints + nPoints) * sizeof(BYTE));
|
|
pNewPoints = (POINT*)realloc(mpPathPoints, (mPathPoints + nPoints) * sizeof(POINT));
|
|
|
|
if(pNewTypes)
|
|
mpPathTypes = pNewTypes;
|
|
|
|
if(pNewPoints)
|
|
mpPathPoints = pNewPoints;
|
|
|
|
BYTE* pTypes = new BYTE[nPoints];
|
|
POINT* pPoints = new POINT[nPoints];
|
|
|
|
if(pNewTypes && pNewPoints && nPoints == GetPath(hdc, pPoints, pTypes, nPoints))
|
|
{
|
|
for(int i = 0; i < nPoints; ++i)
|
|
{
|
|
mpPathPoints[mPathPoints + i].x = pPoints[i].x + dx;
|
|
mpPathPoints[mPathPoints + i].y = pPoints[i].y + dy;
|
|
mpPathTypes[mPathPoints + i] = pTypes[i];
|
|
}
|
|
|
|
mPathPoints += nPoints;
|
|
|
|
delete[] pTypes;
|
|
delete[] pPoints;
|
|
return true;
|
|
}
|
|
else
|
|
DebugBreak();
|
|
|
|
delete[] pTypes;
|
|
delete[] pPoints;
|
|
}
|
|
|
|
::AbortPath(hdc);
|
|
|
|
return false;
|
|
}
|
|
|
|
bool Rasterizer::ScanConvert()
|
|
{
|
|
int lastmoveto = -1;
|
|
int i;
|
|
|
|
// Drop any outlines we may have.
|
|
|
|
mOutline.clear();
|
|
mWideOutline.clear();
|
|
|
|
// Determine bounding box
|
|
|
|
if(!mPathPoints)
|
|
{
|
|
mPathOffsetX = mPathOffsetY = 0;
|
|
mWidth = mHeight = 0;
|
|
return 0;
|
|
}
|
|
|
|
int minx = INT_MAX;
|
|
int miny = INT_MAX;
|
|
int maxx = INT_MIN;
|
|
int maxy = INT_MIN;
|
|
|
|
for(i=0; i<mPathPoints; ++i)
|
|
{
|
|
int ix = mpPathPoints[i].x;
|
|
int iy = mpPathPoints[i].y;
|
|
|
|
if(ix < minx) minx = ix;
|
|
if(ix > maxx) maxx = ix;
|
|
if(iy < miny) miny = iy;
|
|
if(iy > maxy) maxy = iy;
|
|
}
|
|
|
|
minx = (minx >> 3) & ~7;
|
|
miny = (miny >> 3) & ~7;
|
|
maxx = (maxx + 7) >> 3;
|
|
maxy = (maxy + 7) >> 3;
|
|
|
|
for(i=0; i<mPathPoints; ++i)
|
|
{
|
|
mpPathPoints[i].x -= minx*8;
|
|
mpPathPoints[i].y -= miny*8;
|
|
}
|
|
|
|
if(minx > maxx || miny > maxy)
|
|
{
|
|
mWidth = mHeight = 0;
|
|
mPathOffsetX = mPathOffsetY = 0;
|
|
_TrashPath();
|
|
return true;
|
|
}
|
|
|
|
mWidth = maxx + 1 - minx;
|
|
mHeight = maxy + 1 - miny;
|
|
|
|
mPathOffsetX = minx;
|
|
mPathOffsetY = miny;
|
|
|
|
// Initialize edge buffer. We use edge 0 as a sentinel.
|
|
|
|
mEdgeNext = 1;
|
|
mEdgeHeapSize = 2048;
|
|
mpEdgeBuffer = (Edge*)malloc(sizeof(Edge)*mEdgeHeapSize);
|
|
|
|
// Initialize scanline list.
|
|
|
|
mpScanBuffer = new unsigned int[mHeight];
|
|
memset(mpScanBuffer, 0, mHeight*sizeof(unsigned int));
|
|
|
|
// Scan convert the outline. Yuck, Bezier curves....
|
|
|
|
// Unfortunately, Windows 95/98 GDI has a bad habit of giving us text
|
|
// paths with all but the first figure left open, so we can't rely
|
|
// on the PT_CLOSEFIGURE flag being used appropriately.
|
|
|
|
fFirstSet = false;
|
|
firstp.x = firstp.y = 0;
|
|
lastp.x = lastp.y = 0;
|
|
|
|
for(i=0; i<mPathPoints; ++i)
|
|
{
|
|
BYTE t = mpPathTypes[i] & ~PT_CLOSEFIGURE;
|
|
|
|
switch(t)
|
|
{
|
|
case PT_MOVETO:
|
|
if(lastmoveto >= 0 && firstp != lastp)
|
|
_EvaluateLine(lastp.x, lastp.y, firstp.x, firstp.y);
|
|
lastmoveto = i;
|
|
fFirstSet = false;
|
|
lastp = mpPathPoints[i];
|
|
break;
|
|
case PT_MOVETONC:
|
|
break;
|
|
case PT_LINETO:
|
|
if(mPathPoints - (i-1) >= 2) _EvaluateLine(i-1, i);
|
|
break;
|
|
case PT_BEZIERTO:
|
|
if(mPathPoints - (i-1) >= 4) _EvaluateBezier(i-1, false);
|
|
i += 2;
|
|
break;
|
|
case PT_BSPLINETO:
|
|
if(mPathPoints - (i-1) >= 4) _EvaluateBezier(i-1, true);
|
|
i += 2;
|
|
break;
|
|
case PT_BSPLINEPATCHTO:
|
|
if(mPathPoints - (i-3) >= 4) _EvaluateBezier(i-3, true);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if(lastmoveto >= 0 && firstp != lastp)
|
|
_EvaluateLine(lastp.x, lastp.y, firstp.x, firstp.y);
|
|
|
|
// Free the path since we don't need it anymore.
|
|
|
|
_TrashPath();
|
|
|
|
// Convert the edges to spans. We couldn't do this before because some of
|
|
// the regions may have winding numbers >+1 and it would have been a pain
|
|
// to try to adjust the spans on the fly. We use one heap to detangle
|
|
// a scanline's worth of edges from the singly-linked lists, and another
|
|
// to collect the actual scans.
|
|
|
|
std::vector<int> heap;
|
|
|
|
mOutline.reserve(mEdgeNext / 2);
|
|
|
|
__int64 y = 0;
|
|
|
|
for(y=0; y<mHeight; ++y)
|
|
{
|
|
int count = 0;
|
|
|
|
// Detangle scanline into edge heap.
|
|
|
|
for(unsigned ptr = (unsigned)(mpScanBuffer[y]&0xffffffff); ptr; ptr = mpEdgeBuffer[ptr].next)
|
|
{
|
|
heap.push_back(mpEdgeBuffer[ptr].posandflag);
|
|
}
|
|
|
|
// Sort edge heap. Note that we conveniently made the opening edges
|
|
// one more than closing edges at the same spot, so we won't have any
|
|
// problems with abutting spans.
|
|
|
|
std::sort(heap.begin(), heap.end()/*begin() + heap.size()*/);
|
|
|
|
// Process edges and add spans. Since we only check for a non-zero
|
|
// winding number, it doesn't matter which way the outlines go!
|
|
|
|
std::vector<int>::iterator itX1 = heap.begin();
|
|
std::vector<int>::iterator itX2 = heap.end(); // begin() + heap.size();
|
|
|
|
int x1, x2;
|
|
|
|
for(; itX1 != itX2; ++itX1)
|
|
{
|
|
int x = *itX1;
|
|
|
|
if(!count)
|
|
x1 = (x>>1);
|
|
|
|
if(x&1)
|
|
++count;
|
|
else
|
|
--count;
|
|
|
|
if(!count)
|
|
{
|
|
x2 = (x>>1);
|
|
|
|
if(x2>x1)
|
|
mOutline.push_back(std::pair<__int64,__int64>((y<<32)+x1+0x4000000040000000i64, (y<<32)+x2+0x4000000040000000i64)); // G: damn Avery, this is evil! :)
|
|
}
|
|
}
|
|
|
|
heap.clear();
|
|
}
|
|
|
|
// Dump the edge and scan buffers, since we no longer need them.
|
|
|
|
free(mpEdgeBuffer);
|
|
delete [] mpScanBuffer;
|
|
|
|
// All done!
|
|
|
|
return true;
|
|
}
|
|
|
|
using namespace std;
|
|
|
|
void Rasterizer::_OverlapRegion(tSpanBuffer& dst, tSpanBuffer& src, int dx, int dy)
|
|
{
|
|
tSpanBuffer temp;
|
|
|
|
temp.reserve(dst.size() + src.size());
|
|
|
|
dst.swap(temp);
|
|
|
|
tSpanBuffer::iterator itA = temp.begin();
|
|
tSpanBuffer::iterator itAE = temp.end();
|
|
tSpanBuffer::iterator itB = src.begin();
|
|
tSpanBuffer::iterator itBE = src.end();
|
|
|
|
// Don't worry -- even if dy<0 this will still work! // G: hehe, the evil twin :)
|
|
|
|
unsigned __int64 offset1 = (((__int64)dy)<<32) - dx;
|
|
unsigned __int64 offset2 = (((__int64)dy)<<32) + dx;
|
|
|
|
while(itA != itAE && itB != itBE)
|
|
{
|
|
if((*itB).first + offset1 < (*itA).first)
|
|
{
|
|
// B span is earlier. Use it.
|
|
|
|
unsigned __int64 x1 = (*itB).first + offset1;
|
|
unsigned __int64 x2 = (*itB).second + offset2;
|
|
|
|
++itB;
|
|
|
|
// B spans don't overlap, so begin merge loop with A first.
|
|
|
|
for(;;)
|
|
{
|
|
// If we run out of A spans or the A span doesn't overlap,
|
|
// then the next B span can't either (because B spans don't
|
|
// overlap) and we exit.
|
|
|
|
if(itA == itAE || (*itA).first > x2)
|
|
break;
|
|
|
|
do {x2 = _MAX(x2, (*itA++).second);}
|
|
while(itA != itAE && (*itA).first <= x2);
|
|
|
|
// If we run out of B spans or the B span doesn't overlap,
|
|
// then the next A span can't either (because A spans don't
|
|
// overlap) and we exit.
|
|
|
|
if(itB == itBE || (*itB).first + offset1 > x2)
|
|
break;
|
|
|
|
do {x2 = _MAX(x2, (*itB++).second + offset2);}
|
|
while(itB != itBE && (*itB).first + offset1 <= x2);
|
|
}
|
|
|
|
// Flush span.
|
|
|
|
dst.push_back(tSpan(x1, x2));
|
|
}
|
|
else
|
|
{
|
|
// A span is earlier. Use it.
|
|
|
|
unsigned __int64 x1 = (*itA).first;
|
|
unsigned __int64 x2 = (*itA).second;
|
|
|
|
++itA;
|
|
|
|
// A spans don't overlap, so begin merge loop with B first.
|
|
|
|
for(;;)
|
|
{
|
|
// If we run out of B spans or the B span doesn't overlap,
|
|
// then the next A span can't either (because A spans don't
|
|
// overlap) and we exit.
|
|
|
|
if(itB == itBE || (*itB).first + offset1 > x2)
|
|
break;
|
|
|
|
do {x2 = _MAX(x2, (*itB++).second + offset2);}
|
|
while(itB != itBE && (*itB).first + offset1 <= x2);
|
|
|
|
// If we run out of A spans or the A span doesn't overlap,
|
|
// then the next B span can't either (because B spans don't
|
|
// overlap) and we exit.
|
|
|
|
if(itA == itAE || (*itA).first > x2)
|
|
break;
|
|
|
|
do {x2 = _MAX(x2, (*itA++).second);}
|
|
while(itA != itAE && (*itA).first <= x2);
|
|
}
|
|
|
|
// Flush span.
|
|
|
|
dst.push_back(tSpan(x1, x2));
|
|
}
|
|
}
|
|
|
|
// Copy over leftover spans.
|
|
|
|
while(itA != itAE)
|
|
dst.push_back(*itA++);
|
|
|
|
while(itB != itBE)
|
|
{
|
|
dst.push_back(tSpan((*itB).first + offset1, (*itB).second + offset2));
|
|
++itB;
|
|
}
|
|
}
|
|
|
|
bool Rasterizer::CreateWidenedRegion(int r)
|
|
{
|
|
if(r < 0) r = 0;
|
|
|
|
for(int y = -r; y <= r; ++y)
|
|
{
|
|
int x = (int)(0.5 + sqrt(float(r*r - y*y)));
|
|
|
|
_OverlapRegion(mWideOutline, mOutline, x, y);
|
|
}
|
|
|
|
mWideBorder = r;
|
|
|
|
return true;
|
|
}
|
|
|
|
void Rasterizer::DeleteOutlines()
|
|
{
|
|
mWideOutline.clear();
|
|
mOutline.clear();
|
|
}
|
|
|
|
bool Rasterizer::Rasterize(int xsub, int ysub, bool fBlur)
|
|
{
|
|
_TrashOverlay();
|
|
|
|
if(!mWidth || !mHeight)
|
|
{
|
|
mOverlayWidth = mOverlayHeight = 0;
|
|
return true;
|
|
}
|
|
|
|
xsub &= 7;
|
|
ysub &= 7;
|
|
|
|
int width = mWidth + xsub;
|
|
int height = mHeight + ysub;
|
|
|
|
mOffsetX = mPathOffsetX - xsub;
|
|
mOffsetY = mPathOffsetY - ysub;
|
|
|
|
mWideBorder = (mWideBorder+7)&~7;
|
|
|
|
if(!mWideOutline.empty())
|
|
{
|
|
width += 2*mWideBorder;
|
|
height += 2*mWideBorder;
|
|
|
|
xsub += mWideBorder;
|
|
ysub += mWideBorder;
|
|
|
|
mOffsetX -= mWideBorder;
|
|
mOffsetY -= mWideBorder;
|
|
}
|
|
|
|
mOverlayWidth = ((width+7)>>3) + 1;
|
|
mOverlayHeight = ((height+7)>>3) + 1;
|
|
|
|
mpOverlayBuffer = new byte[2 * mOverlayWidth * mOverlayHeight];
|
|
memset(mpOverlayBuffer, 0, 2 * mOverlayWidth * mOverlayHeight);
|
|
|
|
// Are we doing a border?
|
|
|
|
tSpanBuffer* pOutline[2] = {&mOutline, &mWideOutline};
|
|
|
|
for(int i = countof(pOutline)-1; i >= 0; i--)
|
|
{
|
|
tSpanBuffer::iterator it = pOutline[i]->begin();
|
|
tSpanBuffer::iterator itEnd = pOutline[i]->end();
|
|
|
|
for(; it!=itEnd; ++it)
|
|
{
|
|
int y = (int)(((*it).first >> 32) - 0x40000000 + ysub);
|
|
int x1 = (int)(((*it).first & 0xffffffff) - 0x40000000 + xsub);
|
|
int x2 = (int)(((*it).second & 0xffffffff) - 0x40000000 + xsub);
|
|
|
|
if(x2 > x1)
|
|
{
|
|
int first = x1>>3;
|
|
int last = (x2-1)>>3;
|
|
byte* dst = mpOverlayBuffer + 2*(mOverlayWidth*(y>>3) + first) + i;
|
|
|
|
if(first == last)
|
|
*dst += x2-x1;
|
|
else
|
|
{
|
|
*dst += ((first+1)<<3) - x1;
|
|
dst += 2;
|
|
|
|
while(++first < last)
|
|
{
|
|
*dst += 0x08;
|
|
dst += 2;
|
|
}
|
|
|
|
*dst += x2 - (last<<3);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if(fBlur && mOverlayWidth >= 3 && mOverlayHeight >= 3)
|
|
{
|
|
int pitch = mOverlayWidth*2;
|
|
|
|
byte* tmp = new byte[pitch*mOverlayHeight];
|
|
if(!tmp) return(false);
|
|
|
|
memcpy(tmp, mpOverlayBuffer, pitch*mOverlayHeight);
|
|
|
|
int border = !mWideOutline.empty() ? 1 : 0;
|
|
|
|
for(int j = 1; j < mOverlayHeight-1; j++)
|
|
{
|
|
byte* src = tmp + pitch*j + 2 + border;
|
|
byte* dst = mpOverlayBuffer + pitch*j + 2 + border;
|
|
|
|
for(int i = 1; i < mOverlayWidth-1; i++, src+=2, dst+=2)
|
|
{
|
|
*dst = (src[-2-pitch] + (src[-pitch]<<1) + src[+2-pitch]
|
|
+ (src[-2]<<1) + (src[0]<<2) + (src[+2]<<1)
|
|
+ src[-2+pitch] + (src[+pitch]<<1) + src[+2+pitch]) >> 4;
|
|
}
|
|
}
|
|
|
|
delete [] tmp;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
|
|
/*#define pixmix(s) \
|
|
int a = (((s)*(color>>24))>>6)&0xff; \
|
|
int ia = 256-a; \
|
|
\
|
|
dst[wt] = ((((dst[wt]&0x00ff00ff)*ia + (color&0x00ff00ff)*a)&0xff00ff00)>>8) \
|
|
| ((((dst[wt]&0x0000ff00)*ia + (color&0x0000ff00)*a)&0x00ff0000)>>8) \
|
|
| ((((dst[wt]>>8)&0x00ff0000)*ia)&0xff000000);
|
|
|
|
#define pixmix2(s) \
|
|
int a = ((((s)*(am[wt]))*(color>>24))>>12)&0xff; \
|
|
int ia = 256-a; \
|
|
\
|
|
dst[wt] = ((((dst[wt]&0x00ff00ff)*ia + (color&0x00ff00ff)*a)&0xff00ff00)>>8) \
|
|
| ((((dst[wt]&0x0000ff00)*ia + (color&0x0000ff00)*a)&0x00ff0000)>>8) \
|
|
| ((((dst[wt]>>8)&0x00ff0000)*ia)&0xff000000);*/
|
|
|
|
static __forceinline void pixmix(DWORD *dst, DWORD color, DWORD alpha)
|
|
{
|
|
int a = (((alpha)*(color>>24))>>12)&0xff;
|
|
int ia = 256-a;
|
|
|
|
*dst = ((((*dst&0x00ff00ff)*ia + (color&0x00ff00ff)*a)&0xff00ff00)>>8)
|
|
| ((((*dst&0x0000ff00)*ia + (color&0x0000ff00)*a)&0x00ff0000)>>8)
|
|
| ((((*dst>>8)&0x00ff0000)*ia)&0xff000000);
|
|
}
|
|
|
|
#include <xmmintrin.h>
|
|
#include <emmintrin.h>
|
|
|
|
static __forceinline void pixmix_sse2(DWORD* dst, DWORD color, DWORD alpha)
|
|
{
|
|
alpha = ((alpha * (color>>24)) >> 12) & 0xff;
|
|
color &= 0xffffff;
|
|
|
|
__m128i zero = _mm_setzero_si128();
|
|
__m128i a = _mm_set1_epi32((alpha << 16) | (0x100 - alpha));
|
|
__m128i d = _mm_unpacklo_epi8(_mm_cvtsi32_si128(*dst), zero);
|
|
__m128i s = _mm_unpacklo_epi8(_mm_cvtsi32_si128(color), zero);
|
|
__m128i r = _mm_unpacklo_epi16(d, s);
|
|
|
|
r = _mm_madd_epi16(r, a);
|
|
r = _mm_srli_epi32(r, 8);
|
|
r = _mm_packs_epi32(r, r);
|
|
r = _mm_packus_epi16(r, r);
|
|
|
|
*dst = (DWORD)_mm_cvtsi128_si32(r);
|
|
}
|
|
|
|
#include "../dsutil/vd.h"
|
|
|
|
static const __int64 _00ff00ff00ff00ff = 0x00ff00ff00ff00ffi64;
|
|
|
|
CRect Rasterizer::Draw(SubPicDesc& spd, CRect& clipRect, byte* pAlphaMask, int xsub, int ysub, const long* switchpts, bool fBody, bool fBorder)
|
|
{
|
|
CRect bbox(0, 0, 0, 0);
|
|
|
|
if(!switchpts || !fBody && !fBorder) return(bbox);
|
|
|
|
// clip
|
|
|
|
CRect r(0, 0, spd.w, spd.h);
|
|
r &= clipRect;
|
|
|
|
int x = (xsub + mOffsetX + 4)>>3;
|
|
int y = (ysub + mOffsetY + 4)>>3;
|
|
int w = mOverlayWidth;
|
|
int h = mOverlayHeight;
|
|
int xo = 0, yo = 0;
|
|
|
|
if(x < r.left) {xo = r.left-x; w -= r.left-x; x = r.left;}
|
|
if(y < r.top) {yo = r.top-y; h -= r.top-y; y = r.top;}
|
|
if(x+w > r.right) w = r.right-x;
|
|
if(y+h > r.bottom) h = r.bottom-y;
|
|
|
|
if(w <= 0 || h <= 0) return(bbox);
|
|
|
|
bbox.SetRect(x, y, x+w, y+h);
|
|
bbox &= CRect(0, 0, spd.w, spd.h);
|
|
|
|
// draw
|
|
|
|
const byte* src = mpOverlayBuffer + 2*(mOverlayWidth * yo + xo);
|
|
const byte* s = fBorder ? (src+1) : src;
|
|
const byte* am = pAlphaMask + spd.w * y + x;
|
|
unsigned long* dst = (unsigned long *)((char *)spd.bits + spd.pitch * y) + x;
|
|
|
|
unsigned long color = switchpts[0];
|
|
|
|
bool fSSE2 = !!(g_cpuid.m_flags & CCpuID::sse2);
|
|
|
|
while(h--)
|
|
{
|
|
if(!pAlphaMask)
|
|
{
|
|
if(switchpts[1] == 0xffffffff)
|
|
{
|
|
if(fBody)
|
|
{
|
|
const byte* s = fBorder?(src+1):src;
|
|
/*
|
|
for(int wt=0; wt<w; ++wt)
|
|
{
|
|
pixmix(s[wt*2]);
|
|
}
|
|
*/
|
|
/*__asm
|
|
{
|
|
pxor mm0, mm0
|
|
|
|
mov eax, color
|
|
mov ebx, eax
|
|
and eax, 0x00ffffff
|
|
movd mm3, eax
|
|
punpcklbw mm3, mm0 // mm3 = color&0xffffff
|
|
shr ebx, 24 // bl = color>>24
|
|
|
|
mov ecx, w
|
|
mov esi, s
|
|
mov edi, dst
|
|
|
|
pixmixloop:
|
|
|
|
xor eax, eax
|
|
mov al, [esi] // s[wt*2]
|
|
imul eax, ebx
|
|
shr eax, 6
|
|
and eax, 0xff
|
|
imul eax, 0x01010101
|
|
|
|
movd mm1, eax
|
|
movq mm2, _00ff00ff00ff00ff
|
|
punpcklbw mm1, mm0 // a
|
|
psubsw mm2, mm1 // ia
|
|
pmullw mm1, mm3 // a *= color
|
|
movd mm4, [edi]
|
|
punpcklbw mm4, mm0 // dst[wt]
|
|
pmullw mm2, mm4 // ia *= dst[wt]
|
|
paddsw mm1, mm2 // a*color += ia*dst[wt]
|
|
psrlw mm1, 8
|
|
packuswb mm1, mm1
|
|
movd [edi], mm1
|
|
|
|
add esi, 2
|
|
add edi, 4
|
|
loop pixmixloop
|
|
}*/
|
|
if(fSSE2)
|
|
for(int wt=0; wt<w; ++wt)
|
|
pixmix_sse2(&dst[wt], color, s[wt*2]<<6);
|
|
else
|
|
for(int wt=0; wt<w; ++wt)
|
|
pixmix(&dst[wt], color, s[wt*2]<<6);
|
|
}
|
|
else
|
|
{
|
|
/* for(int wt=0; wt<w; ++wt)
|
|
{
|
|
pixmix(src[wt*2+1]-src[wt*2]);
|
|
}
|
|
*/
|
|
/*__asm
|
|
{
|
|
pxor mm0, mm0
|
|
|
|
mov eax, color
|
|
mov ebx, eax
|
|
and eax, 0x00ffffff
|
|
movd mm3, eax
|
|
punpcklbw mm3, mm0 // mm3 = color&0xffffff
|
|
shr ebx, 24 // bl = color>>24
|
|
|
|
mov ecx, w
|
|
mov esi, src
|
|
mov edi, dst
|
|
|
|
pixmixloop2:
|
|
|
|
xor eax, eax
|
|
mov al, [esi+1] // src[wt*2+1]-src[wt*2]
|
|
sub al, [esi]
|
|
imul eax, ebx
|
|
shr eax, 6
|
|
and eax, 0xff
|
|
imul eax, 0x01010101
|
|
|
|
movd mm1, eax
|
|
movq mm2, _00ff00ff00ff00ff
|
|
punpcklbw mm1, mm0 // a
|
|
psubsw mm2, mm1 // ia
|
|
pmullw mm1, mm3 // a *= color
|
|
movd mm4, [edi]
|
|
punpcklbw mm4, mm0 // dst[wt]
|
|
pmullw mm2, mm4 // ia *= dst[wt]
|
|
paddsw mm1, mm2 // a*color += ia*dst[wt]
|
|
psrlw mm1, 8
|
|
packuswb mm1, mm1
|
|
movd [edi], mm1
|
|
|
|
add esi, 2
|
|
add edi, 4
|
|
loop pixmixloop2
|
|
}*/
|
|
if(fSSE2)
|
|
for(int wt=0; wt<w; ++wt)
|
|
pixmix_sse2(&dst[wt], color, (src[wt*2+1] - src[wt*2])<<6);
|
|
else
|
|
for(int wt=0; wt<w; ++wt)
|
|
pixmix(&dst[wt], color, (src[wt*2+1] - src[wt*2])<<6);
|
|
}
|
|
//__asm emms;
|
|
}
|
|
else
|
|
{
|
|
const long *sw = switchpts;
|
|
|
|
if(fBody)
|
|
{
|
|
/*const byte* s = fBorder?(src+1):src;
|
|
|
|
for(int wt=0; wt<w; ++wt)
|
|
{
|
|
if(wt+xo >= sw[1])
|
|
{
|
|
while(wt+xo >= sw[1]) sw += 2;
|
|
color = sw[-2];
|
|
}
|
|
|
|
pixmix(s[wt*2]);
|
|
}*/
|
|
if(fSSE2)
|
|
for(int wt=0; wt<w; ++wt)
|
|
{
|
|
if(wt+xo >= sw[1]) {while(wt+xo >= sw[1]) sw += 2; color = sw[-2];}
|
|
pixmix_sse2(&dst[wt], color, s[wt*2]<<6);
|
|
}
|
|
else
|
|
for(int wt=0; wt<w; ++wt)
|
|
{
|
|
if(wt+xo >= sw[1]) {while(wt+xo >= sw[1]) sw += 2; color = sw[-2];}
|
|
pixmix(&dst[wt], color, s[wt*2]<<6);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/*for(int wt=0; wt<w; ++wt)
|
|
{
|
|
if(wt+xo >= sw[1])
|
|
{
|
|
while(wt+xo >= sw[1]) sw += 2;
|
|
color = sw[-2];
|
|
}
|
|
|
|
pixmix(src[wt*2+1]-src[wt*2]);
|
|
}*/
|
|
if(fSSE2)
|
|
for(int wt=0; wt<w; ++wt)
|
|
{
|
|
if(wt+xo >= sw[1]) {while(wt+xo >= sw[1]) sw += 2; color = sw[-2];}
|
|
pixmix_sse2(&dst[wt], color, (src[wt*2+1] - src[wt*2])<<6);
|
|
}
|
|
else
|
|
for(int wt=0; wt<w; ++wt)
|
|
{
|
|
if(wt+xo >= sw[1]) {while(wt+xo >= sw[1]) sw += 2; color = sw[-2];}
|
|
pixmix(&dst[wt], color, (src[wt*2+1] - src[wt*2])<<6);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(switchpts[1] == 0xffffffff)
|
|
{
|
|
if(fBody)
|
|
{
|
|
/*const byte* s = fBorder?(src+1):src;
|
|
|
|
for(int wt=0; wt<w; ++wt)
|
|
{
|
|
pixmix2(s[wt*2]);
|
|
}*/
|
|
if(fSSE2)
|
|
for(int wt=0; wt<w; ++wt)
|
|
pixmix_sse2(&dst[wt], color, s[wt*2] * am[wt]);
|
|
else
|
|
for(int wt=0; wt<w; ++wt)
|
|
pixmix(&dst[wt], color, s[wt*2] * am[wt]);
|
|
}
|
|
else
|
|
{
|
|
/*for(int wt=0; wt<w; ++wt)
|
|
{
|
|
pixmix2(src[wt*2+1]-src[wt*2]);
|
|
}*/
|
|
if(fSSE2)
|
|
for(int wt=0; wt<w; ++wt)
|
|
pixmix_sse2(&dst[wt], color, (src[wt*2+1] - src[wt*2]) * am[wt]);
|
|
else
|
|
for(int wt=0; wt<w; ++wt)
|
|
pixmix(&dst[wt], color, (src[wt*2+1] - src[wt*2]) * am[wt]);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
const long *sw = switchpts;
|
|
|
|
if(fBody)
|
|
{
|
|
/*const byte* s = fBorder?(src+1):src;
|
|
|
|
for(int wt=0; wt<w; ++wt)
|
|
{
|
|
if(wt+xo >= sw[1])
|
|
{
|
|
while(wt+xo >= sw[1]) sw += 2;
|
|
color = sw[-2];
|
|
}
|
|
|
|
pixmix2(s[wt*2]);
|
|
}*/
|
|
if(fSSE2)
|
|
for(int wt=0; wt<w; ++wt)
|
|
{
|
|
if(wt+xo >= sw[1]) {
|
|
while(wt+xo >= sw[1])
|
|
sw += 2; color = sw[-2];
|
|
}
|
|
pixmix_sse2(&dst[wt], color, s[wt*2] * am[wt]);
|
|
}
|
|
else
|
|
for(int wt=0; wt<w; ++wt)
|
|
{
|
|
if(wt+xo >= sw[1]) {
|
|
while(wt+xo >= sw[1])
|
|
sw += 2; color = sw[-2];
|
|
}
|
|
pixmix(&dst[wt], color, s[wt*2] * am[wt]);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/*for(int wt=0; wt<w; ++wt)
|
|
{
|
|
if(wt+xo >= sw[1])
|
|
{
|
|
while(wt+xo >= sw[1]) sw += 2;
|
|
color = sw[-2];
|
|
}
|
|
|
|
pixmix2(src[wt*2+1]-src[wt*2]);
|
|
}*/
|
|
if(fSSE2)
|
|
for(int wt=0; wt<w; ++wt)
|
|
{
|
|
if(wt+xo >= sw[1]) {
|
|
while(wt+xo >= sw[1])
|
|
sw += 2; color = sw[-2];
|
|
}
|
|
pixmix_sse2(&dst[wt], color, (src[wt*2+1] - src[wt*2]) * am[wt]);
|
|
}
|
|
else
|
|
for(int wt=0; wt<w; ++wt)
|
|
{
|
|
if(wt+xo >= sw[1]) {
|
|
while(wt+xo >= sw[1])
|
|
sw += 2; color = sw[-2];
|
|
}
|
|
pixmix(&dst[wt], color, (src[wt*2+1] - src[wt*2]) * am[wt]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
src += 2*mOverlayWidth;
|
|
s += 2*mOverlayWidth;
|
|
am += spd.w;
|
|
dst = (unsigned long *)((char *)dst + spd.pitch);
|
|
}
|
|
|
|
return bbox;
|
|
}
|