ToneMapping filter

h2d/filter/ToneMapping.hx

@@ -0,0 +1,39 @@
+package h2d.filter;
+
+/**
+	Applies a color correction that emulates tonemapping.
+**/
+class ToneMapping extends Filter {
+
+	/**
+		The value used to apply gamma correction.
+	**/
+	public var gamma(get, set) : Float;
+
+	var pass : h3d.pass.ScreenFx<h3d.shader.pbr.ToneMapping>;
+	var shader : h3d.shader.pbr.ToneMapping;
+
+	/**
+		Create a new ColorMatrix filter.
+
+		@param gamma The value used to modify the resulting colors.
+	**/
+	public function new( ?g : Float ) {
+		super();
+		shader = new h3d.shader.pbr.ToneMapping();
+		gamma = g;
+		pass = new h3d.pass.ScreenFx(shader);
+	}
+
+	inline function get_gamma() return shader.gamma;
+	inline function set_gamma(v) return shader.gamma = v;
+
+	override function draw( ctx : RenderContext, t : h2d.Tile ) {
+		var tout = ctx.textures.allocTileTarget("toneMappingOut", t);
+		ctx.engine.pushTarget(tout);
+		shader.hdrTexture = t.getTexture();
+		pass.render();
+		ctx.engine.popTarget();
+		return h2d.Tile.fromTexture(tout);
+	}
+}