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

   1 // Unit tests for SaturationEffect.
   2
   3 #include "test_util.h"
   4 #include "gtest/gtest.h"
   5 #include "saturation_effect.h"
   6
   7 TEST(SaturationEffectTest, SaturationOneIsPassThrough) {
   8         float data[] = {
   9                 1.0f, 0.5f, 0.75f, 0.6f,
  10         };
  11         float out_data[4];
  12         EffectChainTester tester(data, 1, 1, FORMAT_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
  13         Effect *saturation_effect = tester.get_chain()->add_effect(new SaturationEffect());
  14         ASSERT_TRUE(saturation_effect->set_float("saturation", 1.0f));
  15         tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
  16
  17         expect_equal(data, out_data, 1, 1);
  18 }
  19
  20 TEST(SaturationEffectTest, SaturationZeroRemovesColorButPreservesAlpha) {
  21         float data[] = {
  22                 0.0f, 0.0f, 0.0f, 1.0f,
  23                 0.5f, 0.5f, 0.5f, 0.3f,
  24                 1.0f, 0.0f, 0.0f, 1.0f,
  25                 0.0f, 1.0f, 0.0f, 0.7f,
  26                 0.0f, 0.0f, 1.0f, 1.0f,
  27         };
  28         float expected_data[] = {
  29                 0.0f, 0.0f, 0.0f, 1.0f,
  30                 0.5f, 0.5f, 0.5f, 0.3f,
  31                 0.2126f, 0.2126f, 0.2126f, 1.0f,
  32                 0.7152f, 0.7152f, 0.7152f, 0.7f,
  33                 0.0722f, 0.0722f, 0.0722f, 1.0f,
  34         };
  35
  36         float out_data[5 * 4];
  37         EffectChainTester tester(data, 5, 1, FORMAT_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
  38         Effect *saturation_effect = tester.get_chain()->add_effect(new SaturationEffect());
  39         ASSERT_TRUE(saturation_effect->set_float("saturation", 0.0f));
  40         tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
  41
  42         expect_equal(expected_data, out_data, 4, 5);
  43 }
  44
  45 TEST(SaturationEffectTest, DoubleSaturation) {
  46         float data[] = {
  47                 0.0f, 0.0f, 0.0f, 1.0f,
  48                 0.5f, 0.5f, 0.5f, 0.3f,
  49                 0.3f, 0.1f, 0.1f, 1.0f,
  50         };
  51         float expected_data[] = {
  52                 0.0f, 0.0f, 0.0f, 1.0f,
  53                 0.5f, 0.5f, 0.5f, 0.3f,
  54                 0.4570f, 0.0575f, 0.0575f, 1.0f,
  55         };
  56
  57         float out_data[3 * 4];
  58         EffectChainTester tester(data, 3, 1, FORMAT_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
  59         Effect *saturation_effect = tester.get_chain()->add_effect(new SaturationEffect());
  60         ASSERT_TRUE(saturation_effect->set_float("saturation", 2.0f));
  61         tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
  62
  63         expect_equal(expected_data, out_data, 4, 3);
  64 }