//========================================================render_all_paths
public static void RenderSolidAllPaths(IPixelFormat pixFormat,
IRasterizer ras,
IScanline sl,
IVertexSource vs,
RGBA_Bytes[] color_storage,
uint[] path_id,
uint num_paths)
{
for(uint i = 0; i < num_paths; i++)
{
ras.Reset();
#if use_timers
AddPathTimer.Start();
#endif
ras.AddPath(vs, path_id[i]);
#if use_timers
AddPathTimer.Stop();
#endif
#if use_timers
RenderSLTimer.Start();
#endif
RenderSolid(pixFormat, ras, sl, color_storage[i]);
#if use_timers
RenderSLTimer.Stop();
#endif
}
}
/// <summary>
///
/// </summary>
/// <param name="PixelFormat"></param>
/// <param name="Rasterizer"></param>
/// <param name="Scanline"></param>
public Renderer(IPixelFormat PixelFormat, AntiAliasedScanlineRasterizer Rasterizer, IScanline Scanline)
{
m_PixelFormat = PixelFormat;
m_Rasterizer = Rasterizer;
m_Scanline = Scanline;
TextPath = new GsvText();
StrockedText = new StrokeConverter(TextPath);
m_AffineTransformStack.Push(Affine.NewIdentity());
}
public void Render(IRasterizer rasterizer, IScanline scanline, IPixelFormat rendererBase)
{
uint i;
for (i = 0; i < num_paths(); i++)
{
rasterizer.reset();
rasterizer.add_path(this, i);
Renderer.RenderSolid(rendererBase, rasterizer, scanline, color(i).Get_rgba8());
}
}
//=====================================================render_scanlines_aa
public static void GenerateAndRender(IRasterizer ras, IScanline sl, IPixelFormat ren,
SpanAllocator alloc, ISpanGenerator span_gen)
{
if(ras.RewindScanlines())
{
sl.Reset(ras.MinX(), ras.MaxX());
span_gen.Prepare();
while(ras.SweepScanline(sl))
{
GenerateAndRenderSingleScanline(sl, ren, alloc, span_gen);
}
}
}
//================================================render_scanline_aa_solid
private static void RenderSolidSingleScanLine(IPixelFormat pixFormat, IScanline scanLine, RGBA_Bytes color)
{
#if use_timers
render_scanline_aa_solidTimer.Start();
#endif
int y = scanLine.y();
uint num_spans = scanLine.NumberOfSpans;
ScanlineSpan scanlineSpan = scanLine.Begin;
byte[] ManagedCoversArray = scanLine.GetCovers();
unsafe
{
fixed (byte* pCovers = ManagedCoversArray)
{
for (; ; )
{
int x = scanlineSpan.x;
if (scanlineSpan.len > 0)
{
#if use_timers
render_scanline_aa_solid_blend_solid_hspan.Start();
#endif
pixFormat.BlendSolidHorizontalSpan(x, y, (uint)scanlineSpan.len, color, &pCovers[scanlineSpan.cover_index]);
#if use_timers
render_scanline_aa_solid_blend_solid_hspan.Stop();
#endif
}
else
{
#if use_timers
render_scanline_aa_solid_blend_hline.Start();
#endif
pixFormat.BlendHorizontalLine(x, y, (x - (int)scanlineSpan.len - 1), color, pCovers[scanlineSpan.cover_index]);
#if use_timers
render_scanline_aa_solid_blend_hline.Stop();
#endif
}
if (--num_spans == 0) break;
scanlineSpan = scanLine.GetNextScanlineSpan();
}
}
}
#if use_timers
render_scanline_aa_solidTimer.Stop();
#endif
}
//========================================================render_scanlines
public static void RenderSolid(IPixelFormat pixFormat, IRasterizer rasterizer, IScanline scanLine, RGBA_Bytes color)
{
if (rasterizer.RewindScanlines())
{
scanLine.Reset(rasterizer.MinX(), rasterizer.MaxX());
#if use_timers
PrepareTimer.Start();
#endif
//renderer.Prepare();
#if use_timers
PrepareTimer.Stop();
#endif
while (rasterizer.SweepScanline(scanLine))
{
Renderer.RenderSolidSingleScanLine(pixFormat, scanLine, color);
}
}
}
//======================================================render_scanline_aa
private static void GenerateAndRenderSingleScanline(IScanline sl, IPixelFormat ren,
SpanAllocator alloc, ISpanGenerator span_gen)
{
int y = sl.y();
uint num_spans = sl.NumberOfSpans;
ScanlineSpan scanlineSpan = sl.Begin;
byte[] ManagedCoversArray = sl.GetCovers();
unsafe
{
fixed (byte* pCovers = ManagedCoversArray)
{
for (; ; )
{
int x = scanlineSpan.x;
int len = scanlineSpan.len;
if(len < 0) len = -len;
if(tempSpanColors.Capacity() < len)
{
tempSpanColors.Allocate((uint)(len));
}
fixed (RGBA_Bytes* pColors = tempSpanColors.Array)
{
span_gen.Generate(pColors, x, y, (uint)len);
#if use_timers
blend_color_hspan.Start();
#endif
ren.BlendHorizontalColorSpan(x, y, (uint)len, pColors, (scanlineSpan.len < 0) ? null : &pCovers[scanlineSpan.cover_index], pCovers[scanlineSpan.cover_index]);
#if use_timers
blend_color_hspan.Stop();
#endif
}
if (--num_spans == 0) break;
scanlineSpan = sl.GetNextScanlineSpan();
}
}
}
}
//========================================================render_scanlines
public static void RenderSolid(IPixelFormat pixFormat, IRasterizer rasterizer, IScanline scanLine, RGBA_Bytes color)
{
if(rasterizer.RewindScanlines())
{
scanLine.Reset(rasterizer.MinX(), rasterizer.MaxX());
#if use_timers
PrepareTimer.Start();
#endif
//renderer.Prepare();
#if use_timers
PrepareTimer.Stop();
#endif
while(rasterizer.SweepScanline(scanLine))
{
Renderer.RenderSolidSingleScanLine(pixFormat, scanLine, color);
}
}
}
public static void RenderCompound(AntiAliasedCompundRasterizer ras,
IScanline sl_aa,
IScanline sl_bin,
IPixelFormat pixelFormat,
SpanAllocator alloc,
IStyleHandler sh)
{
#if true
unsafe
{
if (ras.RewindScanlines())
{
int min_x = ras.MinX();
int len = ras.MaxX() - min_x + 2;
sl_aa.Reset(min_x, ras.MaxX());
sl_bin.Reset(min_x, ras.MaxX());
//typedef typename BaseRenderer::color_type color_type;
ArrayPOD<RGBA_Bytes> color_span = alloc.Allocate((uint)len * 2);
byte[] ManagedCoversArray = sl_aa.GetCovers();
fixed (byte* pCovers = ManagedCoversArray)
{
fixed (RGBA_Bytes* pColorSpan = color_span.Array)
{
int mix_bufferOffset = len;
uint num_spans;
uint num_styles;
uint style;
bool solid;
while ((num_styles = ras.SweepStyles()) > 0)
{
if (num_styles == 1)
{
// Optimization for a single Style. Happens often
//-------------------------
if (ras.SweepScanline(sl_aa, 0))
{
style = ras.Style(0);
if (sh.IsSolid(style))
{
// Just solid fill
//-----------------------
RenderSolidSingleScanLine(pixelFormat, sl_aa, sh.Color(style));
}
else
{
// Arbitrary Span Generator
//-----------------------
ScanlineSpan span_aa = sl_aa.Begin;
num_spans = sl_aa.NumberOfSpans;
for (; ; )
{
len = span_aa.len;
sh.GenerateSpan(pColorSpan,
span_aa.x,
sl_aa.y(),
(uint)len,
style);
pixelFormat.BlendHorizontalColorSpan(span_aa.x,
sl_aa.y(),
(uint)span_aa.len,
pColorSpan,
&pCovers[span_aa.cover_index], 0);
if (--num_spans == 0) break;
span_aa = sl_aa.GetNextScanlineSpan();
}
}
}
}
else // there are multiple Styles
{
if (ras.SweepScanline(sl_bin, -1))
{
// Clear the spans of the mix_buffer
//--------------------
ScanlineSpan span_bin = sl_bin.Begin;
num_spans = sl_bin.NumberOfSpans;
for (; ; )
{
Basics.MemClear((byte*)&pColorSpan[mix_bufferOffset + span_bin.x - min_x],
span_bin.len * sizeof(RGBA_Bytes));
if (--num_spans == 0) break;
span_bin = sl_bin.GetNextScanlineSpan();
}
for (uint i = 0; i < num_styles; i++)
{
style = ras.Style(i);
solid = sh.IsSolid(style);
if (ras.SweepScanline(sl_aa, (int)i))
{
//IColorType* Colors;
//IColorType* cspan;
//typename ScanlineAA::cover_type* covers;
ScanlineSpan span_aa = sl_aa.Begin;
num_spans = sl_aa.NumberOfSpans;
if (solid)
{
// Just solid fill
//-----------------------
for (; ; )
{
RGBA_Bytes c = sh.Color(style);
len = span_aa.len;
RGBA_Bytes* colors = &pColorSpan[mix_bufferOffset + span_aa.x - min_x];
byte* covers = &pCovers[span_aa.cover_index];
do
{
if (*covers == cover_full)
{
*colors = c;
}
else
{
colors->add(c, *covers);
}
++colors;
++covers;
}
while (--len != 0);
if (--num_spans == 0) break;
span_aa = sl_aa.GetNextScanlineSpan();
}
}
else
{
// Arbitrary Span Generator
//-----------------------
for (; ; )
{
len = span_aa.len;
RGBA_Bytes* colors = &pColorSpan[mix_bufferOffset + span_aa.x - min_x];
RGBA_Bytes* cspan = pColorSpan;
sh.GenerateSpan(cspan,
span_aa.x,
sl_aa.y(),
(uint)len,
style);
byte* covers = &pCovers[span_aa.cover_index];
do
{
if (*covers == cover_full)
{
*colors = *cspan;
}
else
{
colors->add(*cspan, *covers);
}
++cspan;
++colors;
++covers;
}
while (--len != 0);
if (--num_spans == 0) break;
span_aa = sl_aa.GetNextScanlineSpan();
}
}
}
}
// Emit the blended result as a Color hspan
//-------------------------
span_bin = sl_bin.Begin;
num_spans = sl_bin.NumberOfSpans;
for (; ; )
{
pixelFormat.BlendHorizontalColorSpan(span_bin.x,
sl_bin.y(),
(uint)span_bin.len,
&pColorSpan[mix_bufferOffset + span_bin.x - min_x],
null,
cover_full);
if (--num_spans == 0) break;
span_bin = sl_bin.GetNextScanlineSpan();
}
} // if(ras.SweepScanline(sl_bin, -1))
} // if(num_styles == 1) ... else
} // while((num_styles = ras.SweepStyles()) > 0)
}
}
} // if(ras.RewindScanlines())
#endif
}
}
//=====================================================render_scanlines_aa
public static void GenerateAndRender(IRasterizer ras, IScanline sl, IPixelFormat ren,
SpanAllocator alloc, ISpanGenerator span_gen)
{
if(ras.RewindScanlines())
{
sl.Reset(ras.MinX(), ras.MaxX());
span_gen.Prepare();
while(ras.SweepScanline(sl))
{
GenerateAndRenderSingleScanline(sl, ren, alloc, span_gen);
}
}
}
/// <summary>
///
/// </summary>
/// <param name="PixelFormat"></param>
/// <param name="Rasterizer"></param>
/// <param name="Scanline"></param>
public Renderer(IPixelFormat PixelFormat, AntiAliasedScanlineRasterizer Rasterizer, IScanline Scanline)
{
m_PixelFormat = PixelFormat;
m_Rasterizer = Rasterizer;
m_Scanline = Scanline;
TextPath = new GsvText();
StrockedText = new StrokeConverter(TextPath);
m_AffineTransformStack.Push(Affine.NewIdentity());
}
//================================================render_scanline_aa_solid
private static void RenderSolidSingleScanLine(IPixelFormat pixFormat, IScanline scanLine, RGBA_Bytes color)
{
#if use_timers
render_scanline_aa_solidTimer.Start();
#endif
int y = scanLine.y();
uint num_spans = scanLine.NumberOfSpans;
ScanlineSpan scanlineSpan = scanLine.Begin;
byte[] ManagedCoversArray = scanLine.GetCovers();
unsafe
{
fixed (byte* pCovers = ManagedCoversArray)
{
for (; ; )
{
int x = scanlineSpan.x;
if (scanlineSpan.len > 0)
{
#if use_timers
render_scanline_aa_solid_blend_solid_hspan.Start();
#endif
pixFormat.BlendSolidHorizontalSpan(x, y, (uint)scanlineSpan.len, color, &pCovers[scanlineSpan.cover_index]);
#if use_timers
render_scanline_aa_solid_blend_solid_hspan.Stop();
#endif
}
else
{
#if use_timers
render_scanline_aa_solid_blend_hline.Start();
#endif
pixFormat.BlendHorizontalLine(x, y, (x - (int)scanlineSpan.len - 1), color, pCovers[scanlineSpan.cover_index]);
#if use_timers
render_scanline_aa_solid_blend_hline.Stop();
#endif
}
if (--num_spans == 0) break;
scanlineSpan = scanLine.GetNextScanlineSpan();
}
}
}
#if use_timers
render_scanline_aa_solidTimer.Stop();
#endif
}
//--------------------------------------------------------------------
public bool SweepScanline(IScanline sl)
{
#if use_timers
SweepSacanLine.Start();
#endif
for (; ; )
{
if (m_scan_y > m_outline.MaxY())
{
#if use_timers
SweepSacanLine.Stop();
#endif
return false;
}
sl.ResetSpans();
uint scan_y_uint = 0; // it is going to Get initialize to 0 anyway so make it Clear.
if (m_scan_y > 0)
{
scan_y_uint = (uint)m_scan_y;
}
uint num_cells = m_outline.ScanlineNumCells(scan_y_uint);
AntiAliasingCell[] cells;
uint Offset;
m_outline.ScanlineCells(scan_y_uint, out cells, out Offset);
int cover = 0;
while (num_cells != 0)
{
AntiAliasingCell cur_cell = cells[Offset];
int x = cur_cell.x;
int area = cur_cell.area;
uint alpha;
cover += cur_cell.cover;
//accumulate all cells with the same X
while (--num_cells != 0)
{
Offset++;
cur_cell = cells[Offset];
if (cur_cell.x != x)
{
break;
}
area += cur_cell.area;
cover += cur_cell.cover;
}
if (area != 0)
{
alpha = CalculateAlpha((cover << ((int)poly_subpixel_scale_e.Shift + 1)) - area);
if (alpha != 0)
{
sl.AddCell(x, alpha);
}
x++;
}
if ((num_cells != 0) && (cur_cell.x > x))
{
alpha = CalculateAlpha(cover << ((int)poly_subpixel_scale_e.Shift + 1));
if (alpha != 0)
{
sl.AddSpan(x, (cur_cell.x - x), alpha);
}
}
}
if (sl.NumberOfSpans != 0) break;
++m_scan_y;
}
sl.Finalize(m_scan_y);
++m_scan_y;
#if use_timers
SweepSacanLine.Stop();
#endif
return true;
}
///<summary>
///</summary>
///<param name="sl"></param>
///<param name="styleIdx"></param>
///<returns></returns>
public bool SweepScanline(IScanline sl, int styleIdx)
{
int scanY = _scanY - 1;
if (scanY > _rasterizer.MaxY()) return false;
sl.ResetSpans();
uint masterAlpha = AntiAliasingMask;
if (styleIdx < 0)
{
styleIdx = 0;
}
else
{
styleIdx++;
masterAlpha = _masterAlpha[(uint)(_activeStyleTable[(uint)styleIdx] + _minStyle - 1)];
}
StyleInfo st = _activeStyles[_activeStyleTable[styleIdx]];
int numCells = (int)st.NumCells;
uint cellOffset = st.StartCell;
AntiAliasingCell cell = _cells[cellOffset];
int cover = 0;
while (numCells-- != 0)
{
uint alpha;
int x = cell.x;
int area = cell.area;
cover += cell.cover;
cell = _cells[++cellOffset];
if (area != 0)
{
alpha = CalculateAlpha((cover << (PolygonSubpixelShift + 1)) - area,
masterAlpha);
sl.AddCell(x, alpha);
x++;
}
if (numCells == 0 || cell.x <= x)
continue;
alpha = CalculateAlpha(cover << (PolygonSubpixelShift + 1),
masterAlpha);
if (alpha != 0)
{
sl.AddSpan(x, cell.x - x, alpha);
}
}
if (sl.NumberOfSpans == 0) return false;
sl.Finalize(scanY);
return true;
}
///<summary>
///</summary>
///<param name="sl"></param>
///<returns></returns>
///<exception cref="NotImplementedException"></exception>
public bool SweepScanline(IScanline sl)
{
throw new NotImplementedException();
}
//========================================================render_all_paths
public static void RenderSolidAllPaths(IPixelFormat pixFormat,
IRasterizer ras,
IScanline sl,
IVertexSource vs,
RGBA_Bytes[] color_storage,
uint[] path_id,
uint num_paths)
{
for(uint i = 0; i < num_paths; i++)
{
ras.Reset();
#if use_timers
AddPathTimer.Start();
#endif
ras.AddPath(vs, path_id[i]);
#if use_timers
AddPathTimer.Stop();
#endif
#if use_timers
RenderSLTimer.Start();
#endif
RenderSolid(pixFormat, ras, sl, color_storage[i]);
#if use_timers
RenderSLTimer.Stop();
#endif
}
}
public static void RenderCompound(AntiAliasedCompundRasterizer ras,
IScanline sl_aa,
IScanline sl_bin,
IPixelFormat pixelFormat,
SpanAllocator alloc,
IStyleHandler sh)
{
#if true
unsafe
{
if (ras.RewindScanlines())
{
int min_x = ras.MinX();
int len = ras.MaxX() - min_x + 2;
sl_aa.Reset(min_x, ras.MaxX());
sl_bin.Reset(min_x, ras.MaxX());
//typedef typename BaseRenderer::color_type color_type;
ArrayPOD<RGBA_Bytes> color_span = alloc.Allocate((uint)len * 2);
byte[] ManagedCoversArray = sl_aa.GetCovers();
fixed (byte* pCovers = ManagedCoversArray)
{
fixed (RGBA_Bytes* pColorSpan = color_span.Array)
{
int mix_bufferOffset = len;
uint num_spans;
uint num_styles;
uint style;
bool solid;
while ((num_styles = ras.SweepStyles()) > 0)
{
if (num_styles == 1)
{
// Optimization for a single Style. Happens often
//-------------------------
if (ras.SweepScanline(sl_aa, 0))
{
style = ras.Style(0);
if (sh.IsSolid(style))
{
// Just solid fill
//-----------------------
RenderSolidSingleScanLine(pixelFormat, sl_aa, sh.Color(style));
}
else
{
// Arbitrary Span Generator
//-----------------------
ScanlineSpan span_aa = sl_aa.Begin;
num_spans = sl_aa.NumberOfSpans;
for (; ; )
{
len = span_aa.len;
sh.GenerateSpan(pColorSpan,
span_aa.x,
sl_aa.y(),
(uint)len,
style);
pixelFormat.BlendHorizontalColorSpan(span_aa.x,
sl_aa.y(),
(uint)span_aa.len,
pColorSpan,
&pCovers[span_aa.cover_index], 0);
if (--num_spans == 0) break;
span_aa = sl_aa.GetNextScanlineSpan();
}
}
}
}
else // there are multiple Styles
{
if (ras.SweepScanline(sl_bin, -1))
{
// Clear the spans of the mix_buffer
//--------------------
ScanlineSpan span_bin = sl_bin.Begin;
num_spans = sl_bin.NumberOfSpans;
for (; ; )
{
Basics.MemClear((byte*)&pColorSpan[mix_bufferOffset + span_bin.x - min_x],
span_bin.len * sizeof(RGBA_Bytes));
if (--num_spans == 0) break;
span_bin = sl_bin.GetNextScanlineSpan();
}
for (uint i = 0; i < num_styles; i++)
{
style = ras.Style(i);
solid = sh.IsSolid(style);
if (ras.SweepScanline(sl_aa, (int)i))
{
//IColorType* Colors;
//IColorType* cspan;
//typename ScanlineAA::cover_type* covers;
ScanlineSpan span_aa = sl_aa.Begin;
num_spans = sl_aa.NumberOfSpans;
if (solid)
{
// Just solid fill
//-----------------------
for (; ; )
{
RGBA_Bytes c = sh.Color(style);
len = span_aa.len;
RGBA_Bytes* colors = &pColorSpan[mix_bufferOffset + span_aa.x - min_x];
byte* covers = &pCovers[span_aa.cover_index];
do
{
if (*covers == cover_full)
{
*colors = c;
}
else
{
colors->add(c, *covers);
}
++colors;
++covers;
}
while (--len != 0);
if (--num_spans == 0) break;
span_aa = sl_aa.GetNextScanlineSpan();
}
}
else
{
// Arbitrary Span Generator
//-----------------------
for (; ; )
{
len = span_aa.len;
RGBA_Bytes* colors = &pColorSpan[mix_bufferOffset + span_aa.x - min_x];
RGBA_Bytes* cspan = pColorSpan;
sh.GenerateSpan(cspan,
span_aa.x,
sl_aa.y(),
(uint)len,
style);
byte* covers = &pCovers[span_aa.cover_index];
do
{
if (*covers == cover_full)
{
*colors = *cspan;
}
else
{
colors->add(*cspan, *covers);
}
++cspan;
++colors;
++covers;
}
while (--len != 0);
if (--num_spans == 0) break;
span_aa = sl_aa.GetNextScanlineSpan();
}
}
}
}
// Emit the blended result as a Color hspan
//-------------------------
span_bin = sl_bin.Begin;
num_spans = sl_bin.NumberOfSpans;
for (; ; )
{
pixelFormat.BlendHorizontalColorSpan(span_bin.x,
sl_bin.y(),
(uint)span_bin.len,
&pColorSpan[mix_bufferOffset + span_bin.x - min_x],
null,
cover_full);
if (--num_spans == 0) break;
span_bin = sl_bin.GetNextScanlineSpan();
}
} // if(ras.SweepScanline(sl_bin, -1))
} // if(num_styles == 1) ... else
} // while((num_styles = ras.SweepStyles()) > 0)
}
}
} // if(ras.RewindScanlines())
#endif
}
}
///<summary>
///</summary>
///<param name="sl"></param>
///<returns></returns>
///<exception cref="NotImplementedException"></exception>
public bool SweepScanline(IScanline sl)
{
throw new NotImplementedException();
}
///<summary>
///</summary>
///<param name="sl"></param>
///<param name="styleIdx"></param>
///<returns></returns>
public bool SweepScanline(IScanline sl, int styleIdx)
{
int scanY = _scanY - 1;
if (scanY > _rasterizer.MaxY())
{
return(false);
}
sl.ResetSpans();
uint masterAlpha = AntiAliasingMask;
if (styleIdx < 0)
{
styleIdx = 0;
}
else
{
styleIdx++;
masterAlpha = _masterAlpha[(uint)(_activeStyleTable[(uint)styleIdx] + _minStyle - 1)];
}
StyleInfo st = _activeStyles[_activeStyleTable[styleIdx]];
int numCells = (int)st.NumCells;
uint cellOffset = st.StartCell;
AntiAliasingCell cell = _cells[cellOffset];
int cover = 0;
while (numCells-- != 0)
{
uint alpha;
int x = cell.x;
int area = cell.area;
cover += cell.cover;
cell = _cells[++cellOffset];
if (area != 0)
{
alpha = CalculateAlpha((cover << (PolygonSubpixelShift + 1)) - area,
masterAlpha);
sl.AddCell(x, alpha);
x++;
}
if (numCells == 0 || cell.x <= x)
{
continue;
}
alpha = CalculateAlpha(cover << (PolygonSubpixelShift + 1),
masterAlpha);
if (alpha != 0)
{
sl.AddSpan(x, cell.x - x, alpha);
}
}
if (sl.NumberOfSpans == 0)
{
return(false);
}
sl.Finalize(scanY);
return(true);
}
//======================================================render_scanline_aa
private static void GenerateAndRenderSingleScanline(IScanline sl, IPixelFormat ren,
SpanAllocator alloc, ISpanGenerator span_gen)
{
int y = sl.y();
uint num_spans = sl.NumberOfSpans;
ScanlineSpan scanlineSpan = sl.Begin;
byte[] ManagedCoversArray = sl.GetCovers();
unsafe
{
fixed (byte* pCovers = ManagedCoversArray)
{
for (; ; )
{
int x = scanlineSpan.x;
int len = scanlineSpan.len;
if(len < 0) len = -len;
if(tempSpanColors.Capacity() < len)
{
tempSpanColors.Allocate((uint)(len));
}
fixed (RGBA_Bytes* pColors = tempSpanColors.Array)
{
span_gen.Generate(pColors, x, y, (uint)len);
#if use_timers
blend_color_hspan.Start();
#endif
ren.BlendHorizontalColorSpan(x, y, (uint)len, pColors, (scanlineSpan.len < 0) ? null : &pCovers[scanlineSpan.cover_index], pCovers[scanlineSpan.cover_index]);
#if use_timers
blend_color_hspan.Stop();
#endif
}
if (--num_spans == 0) break;
scanlineSpan = sl.GetNextScanlineSpan();
}
}
}
}
//--------------------------------------------------------------------
public bool SweepScanline(IScanline sl)
{
#if use_timers
SweepSacanLine.Start();
#endif
for (; ;)
{
if (m_scan_y > m_outline.MaxY())
{
#if use_timers
SweepSacanLine.Stop();
#endif
return(false);
}
sl.ResetSpans();
uint scan_y_uint = 0; // it is going to Get initialize to 0 anyway so make it Clear.
if (m_scan_y > 0)
{
scan_y_uint = (uint)m_scan_y;
}
uint num_cells = m_outline.ScanlineNumCells(scan_y_uint);
AntiAliasingCell[] cells;
uint Offset;
m_outline.ScanlineCells(scan_y_uint, out cells, out Offset);
int cover = 0;
while (num_cells != 0)
{
AntiAliasingCell cur_cell = cells[Offset];
int x = cur_cell.x;
int area = cur_cell.area;
uint alpha;
cover += cur_cell.cover;
//accumulate all cells with the same X
while (--num_cells != 0)
{
Offset++;
cur_cell = cells[Offset];
if (cur_cell.x != x)
{
break;
}
area += cur_cell.area;
cover += cur_cell.cover;
}
if (area != 0)
{
alpha = CalculateAlpha((cover << ((int)poly_subpixel_scale_e.Shift + 1)) - area);
if (alpha != 0)
{
sl.AddCell(x, alpha);
}
x++;
}
if ((num_cells != 0) && (cur_cell.x > x))
{
alpha = CalculateAlpha(cover << ((int)poly_subpixel_scale_e.Shift + 1));
if (alpha != 0)
{
sl.AddSpan(x, (cur_cell.x - x), alpha);
}
}
}
if (sl.NumberOfSpans != 0)
{
break;
}
++m_scan_y;
}
sl.Finalize(m_scan_y);
++m_scan_y;
#if use_timers
SweepSacanLine.Stop();
#endif
return(true);
}