git.sesse.net Git - movit/blob - glow_effect.cpp

   1 #include <math.h>
   2 #include <assert.h>
   3
   4 #include "glow_effect.h"
   5 #include "blur_effect.h"
   6 #include "mix_effect.h"
   7 #include "effect_chain.h"
   8 #include "util.h"
   9
  10 GlowEffect::GlowEffect()
  11         : blur(new BlurEffect),
  12           cutoff(new HighlightCutoffEffect),
  13           mix(new MixEffect)
  14 {
  15         CHECK(blur->set_float("radius", 20.0f));
  16         CHECK(mix->set_float("strength_first", 1.0f));
  17         CHECK(mix->set_float("strength_second", 1.0f));
  18         CHECK(cutoff->set_float("cutoff", 0.2f));
  19 }
  20
  21 void GlowEffect::rewrite_graph(EffectChain *graph, Node *self)
  22 {
  23         assert(self->incoming_links.size() == 1);
  24         Node *input = self->incoming_links[0];
  25
  26         Node *blur_node = graph->add_node(blur);
  27         Node *mix_node = graph->add_node(mix);
  28         Node *cutoff_node = graph->add_node(cutoff);
  29         graph->replace_receiver(self, mix_node);
  30         graph->connect_nodes(input, cutoff_node);
  31         graph->connect_nodes(cutoff_node, blur_node);
  32         graph->connect_nodes(blur_node, mix_node);
  33         graph->replace_sender(self, mix_node);
  34
  35         self->disabled = true;
  36 }
  37
  38 bool GlowEffect::set_float(const std::string &key, float value) {
  39         if (key == "blurred_mix_amount") {
  40                 return mix->set_float("strength_second", value);
  41         }
  42         if (key == "highlight_cutoff") {
  43                 return cutoff->set_float("cutoff", value);
  44         }
  45         return blur->set_float(key, value);
  46 }
  47
  48 HighlightCutoffEffect::HighlightCutoffEffect()
  49         : cutoff(0.0f)
  50 {
  51         register_float("cutoff", &cutoff);
  52 }
  53
  54 std::string HighlightCutoffEffect::output_fragment_shader()
  55 {
  56         return read_file("highlight_cutoff_effect.frag");
  57 }