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

   1 // Unit tests for AlphaDivisionEffect.
   2
   3 #include <GL/glew.h>
   4 #include "gtest/gtest.h"
   5 #include "image_format.h"
   6 #include "test_util.h"
   7
   8 TEST(AlphaDivisionEffectTest, SimpleTest) {
   9         const int size = 2;
  10         float data[4 * size] = {
  11                 0.1f, 0.5f, 0.1f, 0.5f,
  12                 0.2f, 0.2f, 1.0f, 1.0f,
  13         };
  14         float expected_data[4 * size] = {
  15                 0.2f, 1.0f, 0.2f, 0.5f,
  16                 0.2f, 0.2f, 1.0f, 1.0f,
  17         };
  18         float out_data[4 * size];
  19         EffectChainTester tester(data, 1, size, FORMAT_RGBA_PREMULTIPLIED_ALPHA, COLORSPACE_sRGB, GAMMA_LINEAR);
  20         tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
  21
  22         expect_equal(expected_data, out_data, 4, size);
  23 }
  24
  25 TEST(AlphaDivisionEffectTest, ZeroAlphaIsPreserved) {
  26         const int size = 2;
  27         float data[4 * size] = {
  28                 0.1f, 0.5f, 0.1f, 0.0f,
  29                 0.0f, 0.0f, 0.0f, 0.0f,
  30         };
  31         float out_data[4 * size];
  32         EffectChainTester tester(data, 1, size, FORMAT_RGBA_PREMULTIPLIED_ALPHA, COLORSPACE_sRGB, GAMMA_LINEAR);
  33         tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
  34
  35         EXPECT_EQ(0.0f, out_data[3]);
  36         EXPECT_EQ(0.0f, out_data[7]);
  37 }