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

   1 #include <assert.h>
   2 #include <vector>
   3
   4 #include "blur_effect.h"
   5 #include "effect_chain.h"
   6 #include "glow_effect.h"
   7 #include "mix_effect.h"
   8 #include "util.h"
   9
  10 using namespace std;
  11
  12 GlowEffect::GlowEffect()
  13         : blur(new BlurEffect),
  14           cutoff(new HighlightCutoffEffect),
  15           mix(new MixEffect)
  16 {
  17         CHECK(blur->set_float("radius", 20.0f));
  18         CHECK(mix->set_float("strength_first", 1.0f));
  19         CHECK(mix->set_float("strength_second", 1.0f));
  20         CHECK(cutoff->set_float("cutoff", 0.2f));
  21 }
  22
  23 void GlowEffect::rewrite_graph(EffectChain *graph, Node *self)
  24 {
  25         assert(self->incoming_links.size() == 1);
  26         Node *input = self->incoming_links[0];
  27
  28         Node *blur_node = graph->add_node(blur);
  29         Node *mix_node = graph->add_node(mix);
  30         Node *cutoff_node = graph->add_node(cutoff);
  31         graph->replace_receiver(self, mix_node);
  32         graph->connect_nodes(input, cutoff_node);
  33         graph->connect_nodes(cutoff_node, blur_node);
  34         graph->connect_nodes(blur_node, mix_node);
  35         graph->replace_sender(self, mix_node);
  36
  37         self->disabled = true;
  38 }
  39
  40 bool GlowEffect::set_float(const string &key, float value) {
  41         if (key == "blurred_mix_amount") {
  42                 return mix->set_float("strength_second", value);
  43         }
  44         if (key == "highlight_cutoff") {
  45                 return cutoff->set_float("cutoff", value);
  46         }
  47         return blur->set_float(key, value);
  48 }
  49
  50 HighlightCutoffEffect::HighlightCutoffEffect()
  51         : cutoff(0.0f)
  52 {
  53         register_float("cutoff", &cutoff);
  54 }
  55
  56 string HighlightCutoffEffect::output_fragment_shader()
  57 {
  58         return read_file("highlight_cutoff_effect.frag");
  59 }