Add a high-cutoff filter to the glow effect.

[movit] / glow_effect.cpp

diff --git a/glow_effect.cpp b/glow_effect.cpp
index 0868eb057662909fdc10e3544d996f1dc6bf6db6..a4775052d4503dbf7b6c0fc7f5b5d53ad584f811 100644 (file)
--- a/glow_effect.cpp
+++ b/glow_effect.cpp
@@ -9,10 +9,13 @@
 
 GlowEffect::GlowEffect()
        : blur(new BlurEffect),
+         cutoff(new HighlightCutoffEffect),
          mix(new MixEffect)
 {
+       blur->set_float("radius", 20.0f);
        mix->set_float("strength_first", 1.0f);
-       mix->set_float("strength_second", 0.3f);
+       mix->set_float("strength_second", 1.0f);
+       cutoff->set_float("cutoff", 0.2f);
 }
 
 void GlowEffect::rewrite_graph(EffectChain *graph, Node *self)
@@ -22,8 +25,10 @@ void GlowEffect::rewrite_graph(EffectChain *graph, Node *self)
 
        Node *blur_node = graph->add_node(blur);
        Node *mix_node = graph->add_node(mix);
+       Node *cutoff_node = graph->add_node(cutoff);
        graph->replace_receiver(self, mix_node);
-       graph->connect_nodes(input, blur_node);
+       graph->connect_nodes(input, cutoff_node);
+       graph->connect_nodes(cutoff_node, blur_node);
        graph->connect_nodes(blur_node, mix_node);
        graph->replace_sender(self, mix_node);
 
@@ -34,5 +39,19 @@ bool GlowEffect::set_float(const std::string &key, float value) {
        if (key == "blurred_mix_amount") {
                return mix->set_float("strength_second", value);
        }
+       if (key == "highlight_cutoff") {
+               return cutoff->set_float("cutoff", value);
+       }
        return blur->set_float(key, value);
 }
+
+HighlightCutoffEffect::HighlightCutoffEffect()
+       : cutoff(0.0f)
+{
+       register_float("cutoff", &cutoff);
+}
+
+std::string HighlightCutoffEffect::output_fragment_shader()
+{
+       return read_file("highlight_cutoff_effect.frag");
+}