Support filter in vecr renderer

libs/vecr/include/psemek/vecr/full.hpp

@@ -0,0 +1,26 @@
+#pragma once
+
+#include <psemek/vecr/sdf.hpp>
+#include <psemek/geom/point.hpp>
+#include <psemek/geom/box.hpp>
+
+namespace psemek::vecr
+{
+
+	struct full
+	{};
+
+	inline sdf_sample sdf(full const &, geom::point<float, 2> const &)
+	{
+		return {
+			.value = 0.f,
+			.gradient = {0.f, 0.f},
+		};
+	}
+
+	inline geom::box<float, 2> bbox(full const &)
+	{
+		return geom::box<float, 2>::full();
+	}
+
+}

libs/vecr/include/psemek/vecr/renderer.hpp

@@ -2,6 +2,7 @@
 
 #include <psemek/vecr/sdf.hpp>
 #include <psemek/vecr/any.hpp>
+#include <psemek/vecr/full.hpp>
 #include <psemek/vecr/colorizer.hpp>
 #include <psemek/vecr/blend_mode.hpp>
 #include <psemek/gfx/pixmap.hpp>
@@ -12,6 +13,7 @@ namespace psemek::vecr
 	struct primitive
 	{
 		any mask = {};
+		any filter = full{};
 		float blur = 1.f;
 		float alpha = 1.f;
 		any_colorizer colorizer = {};

libs/vecr/source/renderer.cpp

@@ -71,6 +71,10 @@ namespace psemek::vecr
 			{
 				geom::point const center{(x + 0.5f) / samples_, (y + 0.5f) / samples_};
 
+				auto const filter_sample = sdf(primitive.filter, center);
+
+				if (filter_sample.value > aa) continue;
+
 				auto const sample = sdf(primitive.mask, center);
 
 				if (sample.value > aa) continue;