public void Prepare(PrerollContext context, Layer layer, SKMatrix ctm)
{
RasterCacheKey <Layer> cache_key = new RasterCacheKey <Layer>(layer, ctm);
Entry entry = layer_cache_.First(x => x == cache_key).id(); // I used Linq, that aint going to be good for performance
entry.access_count = GlobalMembers.ClampSize(entry.access_count + 1, 0, threshold_);
entry.used_this_frame = true;
if (!entry.image.is_valid)
{
entry.image = GlobalMembers.Rasterize(context.gr_context, ctm, context.dst_color_space, checkerboard_images_, layer.paint_bounds(), (SKCanvas canvas) =>
{
Layer.PaintContext paintContext = new Layer.PaintContext(canvas, null, context.texture_registry, context.raster_cache, context.checkerboard_offscreen_layers);
layer.Paint(paintContext);
});
}
}
public void Prepare(PrerollContext context, Layer layer, SKMatrix ctm)
{
RasterCacheKey <Layer> cache_key = new RasterCacheKey <Layer>(layer, ctm);
Entry entry = layer_cache_.First(x => x == cache_key).id(); // I used Linq, that aint going to be good for performance
//C++ TO C# CONVERTER TODO TASK: The following line was determined to be a copy assignment (rather than a reference assignment) - this should be verified and a 'CopyFrom' method should be created:
//ORIGINAL LINE: entry.access_count = ClampSize(entry.access_count + 1, 0, threshold_);
entry.access_count = GlobalMembers.ClampSize(entry.access_count + 1, 0, threshold_);
entry.used_this_frame = true;
if (!entry.image.is_valid)
{
//C++ TO C# CONVERTER TODO TASK: Only lambda expressions having all locals passed by reference can be converted to C#:
//ORIGINAL LINE: entry.image = Rasterize(context->gr_context, ctm, context->dst_color_space, checkerboard_images_, layer->paint_bounds(), [layer, context](SKCanvas* canvas)
//C++ TO C# CONVERTER TODO TASK: The following line was determined to be a copy assignment (rather than a reference assignment) - this should be verified and a 'CopyFrom' method should be created:
entry.image = GlobalMembers.Rasterize(context.gr_context, ctm, context.dst_color_space, checkerboard_images_, layer.paint_bounds(), (SKCanvas canvas) =>
{
Layer.PaintContext paintContext = new Layer.PaintContext(canvas, null, context.texture_registry, context.raster_cache, context.checkerboard_offscreen_layers);
layer.Paint(paintContext);
});
}
}
// TODO(chinmaygarde): This method must submit the surfaces as soon as paint
// tasks are done. However, given that there is no support currently for
// Vulkan semaphores, we need to submit all the surfaces after an explicit
// CPU wait. Once Vulkan semaphores are available, this method must return
// void and the implementation must submit surfaces on its own as soon as the
// specific canvas operations are done.
public List <SceneUpdateContext.SurfaceProducerSurface> ExecutePaintTasks(CompositorContext.ScopedFrame frame)
{
TRACE_EVENT0("flutter", "SceneUpdateContext::ExecutePaintTasks");
List <SurfaceProducerSurface> surfaces_to_submit = new List <SurfaceProducerSurface>();
foreach (var task in paint_tasks_)
{
//FML_DCHECK(task.surface);
SKCanvas canvas = task.surface.GetSkiaSurface().Canvas;
Layer.PaintContext context = new Layer.PaintContext(canvas, null, frame.context().texture_registry(), frame.context().raster_cache(), false);
canvas.RestoreToCount(1);
canvas.Save();
canvas.Clear(task.background_color);
canvas.Scale(task.scale_x, task.scale_y);
canvas.Translate(-task.left, -task.top);
foreach (Layer layer in task.layers)
{
layer.Paint(context);
}
surfaces_to_submit.Add(task.surface);
}
paint_tasks_.Clear();
return(surfaces_to_submit);
}