1 // Unit tests for DiffusionEffect.
5 #include "diffusion_effect.h"
6 #include "effect_chain.h"
7 #include "gtest/gtest.h"
8 #include "image_format.h"
11 TEST(DiffusionEffectTest, IdentityTransformDoesNothing) {
14 float data[size * size] = {
20 float out_data[size * size];
22 EffectChainTester tester(data, size, size, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_LINEAR);
23 Effect *diffusion_effect = tester.get_chain()->add_effect(new DiffusionEffect());
24 ASSERT_TRUE(diffusion_effect->set_float("radius", 0.0f));
25 tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
27 expect_equal(data, out_data, size, size);
30 TEST(DiffusionEffectTest, FlattensOutWhitePyramid) {
33 float data[size * size] = {
34 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0,
35 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0,
36 0.0, 0.0, 0.5, 0.5, 0.5, 0.5, 0.5, 0.0, 0.0,
37 0.0, 0.0, 0.5, 0.7, 0.7, 0.7, 0.5, 0.0, 0.0,
38 0.0, 0.0, 0.5, 0.7, 1.0, 0.7, 0.5, 0.0, 0.0,
39 0.0, 0.0, 0.5, 0.7, 0.7, 0.7, 0.5, 0.0, 0.0,
40 0.0, 0.0, 0.5, 0.5, 0.5, 0.5, 0.5, 0.0, 0.0,
41 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0,
42 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0,
44 float expected_data[size * size] = {
45 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0,
46 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0,
47 0.0, 0.0, 0.4, 0.4, 0.4, 0.4, 0.4, 0.0, 0.0,
48 0.0, 0.0, 0.4, 0.5, 0.5, 0.5, 0.4, 0.0, 0.0,
49 0.0, 0.0, 0.4, 0.5, 0.6, 0.5, 0.4, 0.0, 0.0,
50 0.0, 0.0, 0.4, 0.5, 0.5, 0.5, 0.4, 0.0, 0.0,
51 0.0, 0.0, 0.4, 0.4, 0.4, 0.4, 0.4, 0.0, 0.0,
52 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0,
53 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0,
55 float out_data[size * size];
57 EffectChainTester tester(data, size, size, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_LINEAR);
58 Effect *diffusion_effect = tester.get_chain()->add_effect(new DiffusionEffect());
59 ASSERT_TRUE(diffusion_effect->set_float("radius", 2.0f));
60 ASSERT_TRUE(diffusion_effect->set_float("blurred_mix_amount", 0.7f));
61 tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
63 expect_equal(expected_data, out_data, size, size, 0.05f, 0.002);