private Surface GetSurface(IntSize screenSize, EffectLayer layer)
{
var surface = SurfacePool.Request(screenSize / layer.Downscale, Multisample);
surface.Interpolation = InterpolationMode.Linear;
surface.Repeat = RepeatMode.Clamp;
return(surface);
}
protected override void Apply(GraphicsContext gfx, Surface surface)
{
// Will compose images without blending
gfx.Blending = Blending.Opaque;
gfx.Shader = _blurShader;
// Request a temporary surface (we need to multipass)
var temp = SurfacePool.Request(surface.Size);
{
// Horizontal pass (surface to temp)
gfx.Surface = temp;
_blurShader.Vector = Vector.Right * Strength;
gfx.DrawImage(surface, Vector.Zero);
// Vertical pass (temp to surface)
gfx.Surface = surface;
_blurShader.Vector = Vector.Down * Strength;
gfx.DrawImage(temp, Vector.Zero);
}
SurfacePool.Recycle(temp);
}