internal OverlayModel(ImageModelTextureCache cache)
{
this.cache = cache;
cache.Changed += CacheOnChanged;
Overlays.CollectionChanged += OverlaysOnCollectionChanged;
var blendDesc = new BlendStateDescription
{
AlphaToCoverageEnable = false,
IndependentBlendEnable = false
};
blendDesc.RenderTarget[0].IsBlendEnabled = true;
blendDesc.RenderTarget[0].RenderTargetWriteMask = ColorWriteMaskFlags.All;
// C' = a_src * c_src + (1.0 - a_src) * a_dst
blendDesc.RenderTarget[0].BlendOperation = BlendOperation.Add;
blendDesc.RenderTarget[0].SourceBlend = BlendOption.SourceAlpha;
blendDesc.RenderTarget[0].DestinationBlend = BlendOption.InverseSourceAlpha;
// A' = (1.0 - a_src) * a_dst (inverse alpha, render target starts with a == 1)
blendDesc.RenderTarget[0].AlphaBlendOperation = BlendOperation.Add;
blendDesc.RenderTarget[0].SourceAlphaBlend = BlendOption.Zero;
blendDesc.RenderTarget[0].DestinationAlphaBlend = BlendOption.InverseSourceAlpha;
blendState = new BlendState(Device.Get().Handle, blendDesc);
}
public Models(int numPipelines = 1)
{
NumPipelines = numPipelines;
CheckDeviceCapabilities();
SharedModel = new SharedModel();
Images = new ImagesModel(SharedModel.ScaleShader);
TextureCache = new ImageModelTextureCache(Images);
Filter = new FiltersModel(Images);
Progress = new ProgressModel();
for (int i = 0; i < numPipelines; ++i)
{
pipelines.Add(new ImagePipeline(i));
pipelines.Last().PropertyChanged += PipeOnPropertyChanged;
}
Pipelines = pipelines;
// pipeline controller
pipelineController = new PipelineController(this);
}
