public void Render(ISurface <TPixel> dst, PointInt32 renderOffset)
{
dst.Clear <TPixel>();
SizeInt32 size = dst.Size <TPixel>();
RectInt32 num2 = new RectInt32(renderOffset, size);
PointInt32 location = new PointInt32(renderOffset.X - this.offset.X, renderOffset.Y - this.offset.Y);
RectInt32 a = new RectInt32(location, size);
RectInt32 num5 = RectInt32.Intersect(a, this.source.Bounds <TPixel>());
if (num5.HasPositiveArea)
{
PointInt32 num6 = new PointInt32(num5.X - a.X, num5.Y - a.Y);
RectInt32 bounds = new RectInt32(num6, num5.Size);
if (bounds.Location.IsZero && (bounds.Size == size))
{
this.source.Render(dst, location);
}
else
{
using (ISurface <TPixel> surface = dst.CreateWindow <TPixel>(bounds))
{
this.source.Render(surface, num5.Location);
}
}
}
}
private unsafe void RenderContent(ISurface <ColorBgra> dstContent, PointInt32 renderOffset)
{
int width = dstContent.Width;
int height = dstContent.Height;
int stride = dstContent.Stride;
int num4 = stride - (width * 4);
RectInt32 num5 = RectInt32.Intersect(this.srcCoverageBounds, new RectInt32(0, 0, this.contentWidth, this.contentHeight));
int left = num5.Left;
int top = num5.Top;
int right = num5.Right;
int bottom = num5.Bottom;
long num10 = (this.srcOffsetOriginXFp + (renderOffset.X * this.srcOffsetDxDxFp)) + (renderOffset.Y * this.srcOffsetDxDyFp);
long num11 = (this.srcOffsetOriginYFp + (renderOffset.X * this.srcOffsetDyDxFp)) + (renderOffset.Y * this.srcOffsetDyDyFp);
ColorBgra *bgraPtr = this.contentScan0;
int contentStride = this.contentStride;
ColorBgra *bgraPtr2 = (ColorBgra *)dstContent.Scan0;
ColorBgra *bgraPtr3 = bgraPtr2 + width;
for (int i = 0; i < height; i++)
{
uint num16;
int num17;
base.ThrowIfCancellationRequested();
long num14 = num10;
long num15 = num11;
ColorBgra *bgraPtr4 = bgraPtr3 - width;
int num18 = (int)((long)((bgraPtr3 - bgraPtr4) / sizeof(ColorBgra)));
int num19 = (int)(num14 >> 0x18);
int num20 = (int)(num15 >> 0x18);
int num21 = ((num19 >= left) && (num19 < right)) ? 1 : 0;
int num22 = ((num20 >= top) && (num20 < bottom)) ? 1 : 0;
int num23 = ((num19 >= (left - 1)) && (num19 < (right - 1))) ? 1 : 0;
int num24 = ((num20 >= (top - 1)) && (num20 < (bottom - 1))) ? 1 : 0;
long num25 = num14 + (this.srcOffsetDxDxFp * num18);
long num26 = num15 + (this.srcOffsetDyDxFp * num18);
int num27 = (int)(num25 >> 0x18);
int num28 = (int)(num26 >> 0x18);
int num29 = ((num27 >= left) && (num27 < right)) ? 1 : 0;
int num30 = ((num28 >= top) && (num28 < bottom)) ? 1 : 0;
int num31 = ((num27 >= (left - 1)) && (num27 < (right - 1))) ? 1 : 0;
int num32 = ((num28 >= (top - 1)) && (num28 < (bottom - 1))) ? 1 : 0;
if ((((((((num21 + num22) + num23) + num24) + num29) + num30) + num31) + num32) == 8)
{
num17 = num18;
}
else
{
num17 = 0;
}
while ((bgraPtr4 < bgraPtr3) && (num17 > 0))
{
num16 = 0;
int num33 = (int)(num14 >> 0x18);
int num34 = (int)(num15 >> 0x18);
int num35 = 0x100 - (((int)(num14 & 0xffffffL)) >> 0x10);
int num36 = 0x100 - (((int)(num15 & 0xffffffL)) >> 0x10);
int num37 = (num35 * num36) >> 8;
int num38 = ((0x100 - num35) * num36) >> 8;
int num39 = (num35 * (0x100 - num36)) >> 8;
int num40 = ((0x100 - num35) * (0x100 - num36)) >> 8;
int num41 = num37;
int num42 = num38;
int num43 = num39;
int num44 = num40;
ushort d = (ushort)(((num41 + num42) + num43) + num44);
long num46 = (num34 * contentStride) + (num33 * 4);
ColorBgra32 bgra = *((ColorBgra32 *)(bgraPtr + num46));
ColorBgra32 bgra2 = *((ColorBgra32 *)(bgraPtr + (num46 + 4L)));
ColorBgra32 bgra3 = *((ColorBgra32 *)(bgraPtr + (num46 + contentStride)));
ColorBgra32 bgra4 = *((ColorBgra32 *)(bgraPtr + ((num46 + contentStride) + 4L)));
int num47 = bgra.A * num41;
int num48 = bgra2.A * num42;
int num49 = bgra3.A * num43;
int num50 = bgra4.A * num44;
ushort n = (ushort)(((num47 + num48) + num49) + num50);
if (n != 0)
{
uint num52 = UInt32Util.FastDivideByUInt16(n, d);
uint num53 = UInt32Util.FastDivideByUInt16((uint)((((num47 * bgra.B) + (num48 * bgra2.B)) + (num49 * bgra3.B)) + (num50 * bgra4.B)), n);
uint num54 = UInt32Util.FastDivideByUInt16((uint)((((num47 * bgra.G) + (num48 * bgra2.G)) + (num49 * bgra3.G)) + (num50 * bgra4.G)), n);
uint num55 = UInt32Util.FastDivideByUInt16((uint)((((num47 * bgra.R) + (num48 * bgra2.R)) + (num49 * bgra3.R)) + (num50 * bgra4.R)), n);
num16 = ColorBgra.BgraToUInt32((byte)num53, (byte)num54, (byte)num55, (byte)num52);
}
bgraPtr4->Bgra = num16;
num14 += this.srcOffsetDxDxFp;
num15 += this.srcOffsetDyDxFp;
bgraPtr4++;
num17--;
}
while (bgraPtr4 < bgraPtr3)
{
num16 = 0;
int num56 = (int)(num14 >> 0x18);
int num57 = (int)(num15 >> 0x18);
int num58 = ((num56 >= left) && (num56 < right)) ? 1 : 0;
int num59 = ((num57 >= top) && (num57 < bottom)) ? 1 : 0;
int num60 = ((num56 >= (left - 1)) && (num56 < (right - 1))) ? 1 : 0;
int num61 = ((num57 >= (top - 1)) && (num57 < (bottom - 1))) ? 1 : 0;
int num62 = num59 * num58;
int num63 = num59 * num60;
int num64 = num61 * num58;
int num65 = num61 * num60;
if ((((num62 + num63) + num64) + num65) != 0)
{
int num67 = 0x100 - (((int)(num14 & 0xffffffL)) >> 0x10);
int num68 = 0x100 - (((int)(num15 & 0xffffffL)) >> 0x10);
int num69 = (num67 * num68) >> 8;
int num70 = ((0x100 - num67) * num68) >> 8;
int num71 = (num67 * (0x100 - num68)) >> 8;
int num72 = ((0x100 - num67) * (0x100 - num68)) >> 8;
int num73 = num62 * num69;
int num74 = num63 * num70;
int num75 = num64 * num71;
int num76 = num65 * num72;
ushort num77 = (ushort)(((num73 + num74) + num75) + num76);
long num78 = (num57 * contentStride) + (num56 * 4);
ColorBgra32 bgra5 = *((ColorBgra32 *)(bgraPtr + (num78 * num62)));
ColorBgra32 bgra6 = *((ColorBgra32 *)(bgraPtr + ((num78 + 4L) * num63)));
ColorBgra32 bgra7 = *((ColorBgra32 *)(bgraPtr + ((num78 + contentStride) * num64)));
ColorBgra32 bgra8 = *((ColorBgra32 *)(bgraPtr + (((num78 + contentStride) + 4L) * num65)));
int num79 = bgra5.A * num73;
int num80 = bgra6.A * num74;
int num81 = bgra7.A * num75;
int num82 = bgra8.A * num76;
ushort num83 = (ushort)(((num79 + num80) + num81) + num82);
if (num83 != 0)
{
uint num84 = UInt32Util.FastDivideByUInt16(num83, num77);
uint num85 = UInt32Util.FastDivideByUInt16((uint)((((num79 * bgra5.B) + (num80 * bgra6.B)) + (num81 * bgra7.B)) + (num82 * bgra8.B)), num83);
uint num86 = UInt32Util.FastDivideByUInt16((uint)((((num79 * bgra5.G) + (num80 * bgra6.G)) + (num81 * bgra7.G)) + (num82 * bgra8.G)), num83);
uint num87 = UInt32Util.FastDivideByUInt16((uint)((((num79 * bgra5.R) + (num80 * bgra6.R)) + (num81 * bgra7.R)) + (num82 * bgra8.R)), num83);
num16 = ColorBgra.BgraToUInt32((byte)num85, (byte)num86, (byte)num87, (byte)num84);
}
}
bgraPtr4->Bgra = num16;
num14 += this.srcOffsetDxDxFp;
num15 += this.srcOffsetDyDxFp;
bgraPtr4++;
}
num10 += this.srcOffsetDxDyFp;
num11 += this.srcOffsetDyDyFp;
bgraPtr3 += stride;
}
}
public unsafe void Render(ISurfaceAllocator <ColorAlpha8> allocator, int dstWidth, int dstHeight, PointInt32 renderOffset, ref ISurface <ColorAlpha8> dst, out int?fill255Count)
{
int stride;
if ((allocator == null) && (dst == null))
{
throw new ArgumentException();
}
if (dst != null)
{
dst.Clear(ColorAlpha8.Transparent);
}
int x = renderOffset.X;
int y = renderOffset.Y;
int right = renderOffset.X + dstWidth;
int bottom = renderOffset.Y + dstHeight;
RectInt32 a = RectInt32.FromEdges(x, y, right, bottom);
int count = this.scans.Count;
int scansStartIndex = this.GetScansStartIndex(y, bottom);
Label_006C:
stride = -1;
byte *numPtr = null;
if (dst != null)
{
stride = dst.Stride;
numPtr = (byte *)dst.Scan0;
}
int num9 = 0;
for (int i = scansStartIndex; i < count; i++)
{
RectInt32 scanAt = this.GetScanAt(i);
if (scanAt.Y >= bottom)
{
break;
}
int left = Math.Max(x, scanAt.X);
int top = Math.Max(y, scanAt.Y);
int num14 = Math.Min(right, scanAt.X + scanAt.Width);
int num15 = Math.Min(bottom, scanAt.Y + scanAt.Height);
RectInt32 b = RectInt32.FromEdges(left, top, num14, num15);
if (RectInt32.Intersect(a, b).HasPositiveArea)
{
uint num18 = (uint)(num14 - left);
int num19 = left - renderOffset.X;
int num20 = num14 - renderOffset.X;
if (dst == null)
{
num9 += (int)((num15 - top) * num18);
}
else
{
byte *prgBuffer = numPtr + ((byte *)(((top - renderOffset.Y) * stride) + num19));
for (int j = top; j < num15; j++)
{
Memory.FillMemory(prgBuffer, 0xff, (ulong)num18);
prgBuffer += stride;
}
}
}
}
if (((dst != null) || (num9 == 0)) || (num9 == (dstWidth * dstHeight)))
{
if (dst == null)
{
fill255Count = new int?(num9);
}
else
{
fill255Count = 0;
}
}
else
{
dst = allocator.Allocate(dstWidth, dstHeight, AllocationOptions.Default);
goto Label_006C;
}
}
