1 // Unit tests for AlphaMultiplicationEffect.
6 #include "effect_chain.h"
7 #include "flat_input.h"
8 #include "gtest/gtest.h"
9 #include "image_format.h"
10 #include "padding_effect.h"
11 #include "test_util.h"
14 TEST(PaddingEffectTest, SimpleCenter) {
19 float expected_data[4 * 4] = {
20 0.0f, 0.0f, 0.0f, 0.0f,
21 0.0f, 1.0f, 0.5f, 0.0f,
22 0.0f, 0.8f, 0.3f, 0.0f,
23 0.0f, 0.0f, 0.0f, 0.0f,
25 float out_data[4 * 4];
27 EffectChainTester tester(NULL, 4, 4);
30 format.color_space = COLORSPACE_sRGB;
31 format.gamma_curve = GAMMA_LINEAR;
33 FlatInput *input = new FlatInput(format, FORMAT_GRAYSCALE, GL_FLOAT, 2, 2);
34 input->set_pixel_data(data);
35 tester.get_chain()->add_input(input);
37 Effect *effect = tester.get_chain()->add_effect(new PaddingEffect());
38 CHECK(effect->set_int("width", 4));
39 CHECK(effect->set_int("height", 4));
40 CHECK(effect->set_float("left", 1.0f));
41 CHECK(effect->set_float("top", 1.0f));
43 tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_FORMAT_PREMULTIPLIED);
44 expect_equal(expected_data, out_data, 4, 4);
47 TEST(PaddingEffectTest, WhiteBorderColor) {
52 float expected_data[4 * 4] = {
53 1.0f, 1.0f, 1.0f, 1.0f,
54 1.0f, 1.0f, 0.5f, 1.0f,
55 1.0f, 0.8f, 0.3f, 1.0f,
56 1.0f, 1.0f, 1.0f, 1.0f,
58 float out_data[4 * 4];
60 EffectChainTester tester(NULL, 4, 4);
63 format.color_space = COLORSPACE_sRGB;
64 format.gamma_curve = GAMMA_LINEAR;
66 FlatInput *input = new FlatInput(format, FORMAT_GRAYSCALE, GL_FLOAT, 2, 2);
67 input->set_pixel_data(data);
68 tester.get_chain()->add_input(input);
70 Effect *effect = tester.get_chain()->add_effect(new PaddingEffect());
71 CHECK(effect->set_int("width", 4));
72 CHECK(effect->set_int("height", 4));
73 CHECK(effect->set_float("left", 1.0f));
74 CHECK(effect->set_float("top", 1.0f));
76 RGBATuple border_color(1.0f, 1.0f, 1.0f, 1.0f);
77 CHECK(effect->set_vec4("border_color", (float *)&border_color));
79 tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_FORMAT_PREMULTIPLIED);
80 expect_equal(expected_data, out_data, 4, 4);
83 TEST(PaddingEffectTest, BorderColorIsInLinearGamma) {
85 0.2f, 0.4f, 0.6f, 0.8f,
87 float expected_data[4 * 2] = {
88 0.5005, 0.7051, 0.8677, 0.7998, // Pixel from data[].
89 0.5005, 0.7051, 0.8677, 0.7998, // Pixel from the border color.
91 float out_data[4 * 2];
93 EffectChainTester tester(NULL, 1, 2);
96 format.color_space = COLORSPACE_sRGB;
97 format.gamma_curve = GAMMA_LINEAR;
99 FlatInput *input = new FlatInput(format, FORMAT_RGBA_PREMULTIPLIED_ALPHA, GL_FLOAT, 1, 1);
100 input->set_pixel_data(data);
101 tester.get_chain()->add_input(input);
103 Effect *effect = tester.get_chain()->add_effect(new PaddingEffect());
104 CHECK(effect->set_int("width", 1));
105 CHECK(effect->set_int("height", 2));
106 CHECK(effect->set_float("left", 0.0f));
107 CHECK(effect->set_float("top", 0.0f));
109 RGBATuple border_color(0.2f, 0.4f, 0.6f, 0.8f); // Same as the pixel in data[].
110 CHECK(effect->set_vec4("border_color", (float *)&border_color));
112 tester.run(out_data, GL_RGBA, COLORSPACE_REC_601_625, GAMMA_REC_601, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
113 expect_equal(expected_data, out_data, 4, 2);
116 TEST(PaddingEffectTest, DifferentXAndYOffset) {
117 float data[1 * 1] = {
120 float expected_data[3 * 3] = {
125 float out_data[3 * 3];
127 EffectChainTester tester(NULL, 3, 3);
130 format.color_space = COLORSPACE_sRGB;
131 format.gamma_curve = GAMMA_LINEAR;
133 FlatInput *input = new FlatInput(format, FORMAT_GRAYSCALE, GL_FLOAT, 1, 1);
134 input->set_pixel_data(data);
135 tester.get_chain()->add_input(input);
137 Effect *effect = tester.get_chain()->add_effect(new PaddingEffect());
138 CHECK(effect->set_int("width", 3));
139 CHECK(effect->set_int("height", 3));
140 CHECK(effect->set_float("left", 2.0f));
141 CHECK(effect->set_float("top", 1.0f));
143 tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_FORMAT_PREMULTIPLIED);
144 expect_equal(expected_data, out_data, 3, 3);
147 TEST(PaddingEffectTest, NonIntegerOffset) {
148 float data[4 * 1] = {
149 0.25f, 0.50f, 0.75f, 1.0f,
151 // Note that the first pixel is completely blank, since the cutoff goes
152 // at the immediate left of the texel.
153 float expected_data[5 * 2] = {
154 0.0f, 0.4375f, 0.6875f, 0.9375f, 0.0f,
155 0.0f, 0.0f, 0.0f, 0.0f, 0.0f,
157 float out_data[5 * 2];
159 EffectChainTester tester(NULL, 5, 2);
162 format.color_space = COLORSPACE_sRGB;
163 format.gamma_curve = GAMMA_LINEAR;
165 FlatInput *input = new FlatInput(format, FORMAT_GRAYSCALE, GL_FLOAT, 4, 1);
166 input->set_pixel_data(data);
167 tester.get_chain()->add_input(input);
169 Effect *effect = tester.get_chain()->add_effect(new PaddingEffect());
170 CHECK(effect->set_int("width", 5));
171 CHECK(effect->set_int("height", 2));
172 CHECK(effect->set_float("left", 0.25f));
173 CHECK(effect->set_float("top", 0.0f));
175 tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_FORMAT_PREMULTIPLIED);
176 expect_equal(expected_data, out_data, 5, 2);
179 TEST(PaddingEffectTest, Crop) {
180 float data[2 * 2] = {
184 float expected_data[1 * 1] = {
187 float out_data[1 * 1];
189 EffectChainTester tester(NULL, 1, 1);
192 format.color_space = COLORSPACE_sRGB;
193 format.gamma_curve = GAMMA_LINEAR;
195 FlatInput *input = new FlatInput(format, FORMAT_GRAYSCALE, GL_FLOAT, 2, 2);
196 input->set_pixel_data(data);
197 tester.get_chain()->add_input(input);
199 Effect *effect = tester.get_chain()->add_effect(new PaddingEffect());
200 CHECK(effect->set_int("width", 1));
201 CHECK(effect->set_int("height", 1));
202 CHECK(effect->set_float("left", -1.0f));
203 CHECK(effect->set_float("top", -1.0f));
205 tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_FORMAT_PREMULTIPLIED);
206 expect_equal(expected_data, out_data, 1, 1);
209 TEST(PaddingEffectTest, AlphaIsCorrectEvenWithNonLinearInputsAndOutputs) {
210 float data[2 * 1] = {
214 float expected_data[4 * 4] = {
215 1.0f, 1.0f, 1.0f, 0.5f,
216 1.0f, 1.0f, 1.0f, 1.0f,
217 0.8f, 0.8f, 0.8f, 1.0f,
218 1.0f, 1.0f, 1.0f, 0.5f,
220 float out_data[4 * 4];
222 EffectChainTester tester(NULL, 1, 4);
225 format.color_space = COLORSPACE_REC_601_625;
226 format.gamma_curve = GAMMA_REC_709;
228 FlatInput *input = new FlatInput(format, FORMAT_GRAYSCALE, GL_FLOAT, 1, 2);
229 input->set_pixel_data(data);
230 tester.get_chain()->add_input(input);
232 Effect *effect = tester.get_chain()->add_effect(new PaddingEffect());
233 CHECK(effect->set_int("width", 1));
234 CHECK(effect->set_int("height", 4));
235 CHECK(effect->set_float("left", 0.0f));
236 CHECK(effect->set_float("top", 1.0f));
238 RGBATuple border_color(1.0f, 1.0f, 1.0f, 0.5f);
239 CHECK(effect->set_vec4("border_color", (float *)&border_color));
241 tester.run(out_data, GL_RGBA, COLORSPACE_REC_601_625, GAMMA_REC_709, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
242 expect_equal(expected_data, out_data, 4, 4);