public unsafe void Render(ISurface <ColorAlpha8> dst, PointInt32 renderOffset)
{
int width = dst.Width;
int height = dst.Height;
int stride = dst.Stride;
using (ISurface <ColorAlpha8> surface = SurfaceAllocator.Alpha8.Allocate(width, height, AllocationOptions.ZeroFillNotRequired))
{
this.first.Render(dst, renderOffset);
this.second.Render(surface, renderOffset);
int num4 = surface.Stride;
if ((stride == width) && (stride == num4))
{
RenderingKernels.MultiplyAlpha8ByAlpha8Extent((byte *)dst.Scan0, (byte *)surface.Scan0, width * height);
}
else
{
for (int i = 0; i < height; i++)
{
byte *rowPointer = (byte *)dst.GetRowPointer <ColorAlpha8>(i);
byte *numPtr2 = (byte *)surface.GetRowPointer <ColorAlpha8>(i);
RenderingKernels.MultiplyAlpha8ByAlpha8Extent(rowPointer, numPtr2, width);
}
}
}
}
public unsafe void Render(ISurface <ColorAlpha8> dst, PointInt32 renderOffset)
{
int width = dst.Width;
int height = dst.Height;
int stride = dst.Stride;
int x = renderOffset.X * 3;
int y = renderOffset.Y * 3;
int dstWidth = width * 3;
int dstHeight = height * 3;
IMaskFromScansRenderer source = this.source as IMaskFromScansRenderer;
if (source != null)
{
ISurface <ColorAlpha8> surface = null;
try
{
int?nullable;
source.Render(alpha8Allocator, dstWidth, dstHeight, new PointInt32(x, y), ref surface, out nullable);
if (nullable.HasValue)
{
if (nullable.GetValueOrDefault() != 0)
{
if (nullable.GetValueOrDefault() != (dstWidth * dstHeight))
{
throw new UnreachableCodeException();
}
dst.Clear(ColorAlpha8.Opaque);
}
else
{
dst.Clear(ColorAlpha8.Transparent);
}
}
else
{
RenderingKernels.ResizeBoxFilterOneThirdAlpha8((byte *)dst.Scan0, width, height, stride, (byte *)surface.Scan0, dstWidth, dstHeight, surface.Stride);
}
}
finally
{
DisposableUtil.Free <ISurface <ColorAlpha8> >(ref surface);
}
}
else
{
using (ISurface <ColorAlpha8> surface2 = this.source.UseTileOrToSurface(new RectInt32(x, y, dstWidth, dstHeight)))
{
RenderingKernels.ResizeBoxFilterOneThirdAlpha8((byte *)dst.Scan0, width, height, stride, (byte *)surface2.Scan0, dstWidth, dstHeight, surface2.Stride);
}
}
}
private unsafe void RenderTileWorkItem(PointInt32 tileOffset)
{
IBitmap <ColorPbgra32> bitmap;
bool isCancelled = false;
bool flag = false;
Exception error = null;
isCancelled |= this.IsTileRenderingCancelled(tileOffset);
if (isCancelled)
{
bitmap = null;
}
else
{
RectInt32 tileSourceRect = this.tileMathHelper.GetTileSourceRect(tileOffset);
SizeInt32 tileBufferSize = this.GetTileBufferSize(tileOffset);
bitmap = RetryManager.Eval <IBitmap <ColorPbgra32> >(3, () => BitmapAllocator.Pbgra32.Allocate(tileBufferSize, AllocationOptions.Default), delegate(Exception _) {
CleanupManager.RequestCleanup();
Thread.Sleep(200);
CleanupManager.WaitForPendingCleanup();
}, delegate(AggregateException ex) {
throw new AggregateException($"could not allocate a bitmap of size {tileBufferSize.Width} x {tileBufferSize.Height}", ex).Flatten();
});
if (this.source != null)
{
try
{
isCancelled |= this.IsTileRenderingCancelled(tileOffset);
if (!isCancelled)
{
using (IBitmapLock <ColorPbgra32> @lock = bitmap.Lock <ColorPbgra32>(BitmapLockOptions.ReadWrite))
{
if (this.mipLevel == 0)
{
this.source.CopyPixels(new RectInt32?(tileSourceRect), @lock);
RenderingKernels.ConvertBgra32ToPbgra32((uint *)@lock.Scan0, tileBufferSize.Width, tileBufferSize.Height, @lock.Stride);
flag = true;
}
else
{
BitmapInterpolationMode linear;
if (!this.isHighQuality)
{
linear = BitmapInterpolationMode.Linear;
}
else if (this.mipLevel == 1)
{
linear = BitmapInterpolationMode.Linear;
}
else
{
linear = BitmapInterpolationMode.Fant;
}
IImagingFactory instance = ImagingFactory.Instance;
ICancellationToken cancelToken = CancellationTokenUtil.Create((Func <bool>)(() => (isCancelled | this.IsTileRenderingCancelled(tileOffset))));
int copyHeightLog2 = Math.Max(3, 7 - this.mipLevel);
using (ClippedBitmapSource <ColorBgra32> source2 = new ClippedBitmapSource <ColorBgra32>(this.source, tileSourceRect))
{
using (CancellableBitmapSource <ColorBgra32> source3 = new CancellableBitmapSource <ColorBgra32>(source2, r => this.tileMathHelper.EnumerateTilesClippedToSourceRect(r), null, cancelToken))
{
using (IBitmapSource <ColorPbgra32> source4 = CreateBufferedTileScaler(instance, source3, tileBufferSize.Width, tileBufferSize.Height, linear))
{
using (CancellableBitmapSource <ColorPbgra32> source5 = new CancellableBitmapSource <ColorPbgra32>(source4, r => TileRectSplitter(r, ((int)1) << copyHeightLog2), null, cancelToken))
{
try
{
source5.CopyPixels <ColorPbgra32>(@lock);
flag = true;
}
catch (OperationCanceledException exception2)
{
error = exception2;
isCancelled = true;
}
catch (Exception exception3)
{
error = exception3;
throw;
}
}
}
}
}
}
isCancelled |= this.IsTileRenderingCancelled(tileOffset);
if (isCancelled)
{
flag = false;
}
}
if (!flag)
{
DisposableUtil.Free <IBitmap <ColorPbgra32> >(ref bitmap);
}
}
}
catch (OperationCanceledException exception4)
{
error = exception4;
isCancelled = true;
}
catch (Exception exception5)
{
error = exception5;
isCancelled |= this.IsTileRenderingCancelled(tileOffset);
if (!isCancelled)
{
using (IDrawingContext context = DrawingContext.FromBitmap(bitmap, FactorySource.PerThread))
{
context.Clear(new ColorRgba128Float?((ColorRgba128Float)Colors.White));
string text = exception5.ToString();
using (ISystemFonts fonts = new SystemFonts(true))
{
TextLayout textLayout = UIText.CreateLayout(context, text, fonts.Caption, null, HotkeyRenderMode.Ignore, (double)bitmap.Size.Width, 65535.0);
textLayout.FontSize *= 0.6;
textLayout.WordWrapping = WordWrapping.Wrap;
context.DrawTextLayout(PointDouble.Zero, textLayout, SolidColorBrushCache.Get((ColorRgba128Float)Colors.Black), DrawTextOptions.None);
}
}
flag = true;
}
}
}
}
isCancelled |= this.IsTileRenderingCancelled(tileOffset);
if (isCancelled)
{
DisposableUtil.Free <IBitmap <ColorPbgra32> >(ref bitmap);
}
RenderedTileInfo info = new RenderedTileInfo(bitmap, !isCancelled && (bitmap > null), error);
if (!this.tilesRenderedQueue.TryEnqueue(tileOffset, info))
{
ExceptionUtil.ThrowInternalErrorException("Could not enqueue to this.tilesRenderedQueue");
}
if (Interlocked.Exchange(ref this.isProcessTileRenderedQueueQueued, 1) == 0)
{
this.syncContext.Post(this.processTileRenderedQueueCallback);
}
}
