Add missing unit test.
authorSteinar H. Gunderson <sgunderson@bigfoot.com>
Thu, 17 Jan 2013 01:22:24 +0000 (02:22 +0100)
committerSteinar H. Gunderson <sgunderson@bigfoot.com>
Thu, 17 Jan 2013 01:22:24 +0000 (02:22 +0100)
padding_effect_test.cpp [new file with mode: 0644]

diff --git a/padding_effect_test.cpp b/padding_effect_test.cpp
new file mode 100644 (file)
index 0000000..ecd0d1e
--- /dev/null
@@ -0,0 +1,201 @@
+// Unit tests for AlphaMultiplicationEffect.
+
+#include "test_util.h"
+#include "flat_input.h"
+#include "padding_effect.h"
+#include "gtest/gtest.h"
+
+TEST(PaddingEffectTest, SimpleCenter) {
+       float data[2 * 2] = {
+               1.0f, 0.5f,
+               0.8f, 0.3f,
+       };
+       float expected_data[4 * 4] = {
+               0.0f, 0.0f, 0.0f, 0.0f,
+               0.0f, 1.0f, 0.5f, 0.0f,
+               0.0f, 0.8f, 0.3f, 0.0f,
+               0.0f, 0.0f, 0.0f, 0.0f,
+       };
+       float out_data[4 * 4];
+
+        EffectChainTester tester(NULL, 4, 4);
+
+       ImageFormat format;
+       format.color_space = COLORSPACE_sRGB;
+       format.gamma_curve = GAMMA_LINEAR;
+
+       FlatInput *input = new FlatInput(format, FORMAT_GRAYSCALE, GL_FLOAT, 2, 2);
+       input->set_pixel_data(data);
+       tester.get_chain()->add_input(input);
+
+       Effect *effect = tester.get_chain()->add_effect(new PaddingEffect());
+       CHECK(effect->set_int("width", 4));
+       CHECK(effect->set_int("height", 4));
+       CHECK(effect->set_float("left", 1.0f));
+       CHECK(effect->set_float("top", 1.0f));
+
+       tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_PREMULTIPLIED);
+       expect_equal(expected_data, out_data, 4, 4);
+}
+
+TEST(PaddingEffectTest, WhiteBorderColor) {
+       float data[2 * 2] = {
+               1.0f, 0.5f,
+               0.8f, 0.3f,
+       };
+       float expected_data[4 * 4] = {
+               1.0f, 1.0f, 1.0f, 1.0f,
+               1.0f, 1.0f, 0.5f, 1.0f,
+               1.0f, 0.8f, 0.3f, 1.0f,
+               1.0f, 1.0f, 1.0f, 1.0f,
+       };
+       float out_data[4 * 4];
+
+        EffectChainTester tester(NULL, 4, 4);
+
+       ImageFormat format;
+       format.color_space = COLORSPACE_sRGB;
+       format.gamma_curve = GAMMA_LINEAR;
+
+       FlatInput *input = new FlatInput(format, FORMAT_GRAYSCALE, GL_FLOAT, 2, 2);
+       input->set_pixel_data(data);
+       tester.get_chain()->add_input(input);
+
+       Effect *effect = tester.get_chain()->add_effect(new PaddingEffect());
+       CHECK(effect->set_int("width", 4));
+       CHECK(effect->set_int("height", 4));
+       CHECK(effect->set_float("left", 1.0f));
+       CHECK(effect->set_float("top", 1.0f));
+
+       RGBATriplet border_color(1.0f, 1.0f, 1.0f, 1.0f);
+       CHECK(effect->set_vec4("border_color", (float *)&border_color));
+
+       tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_PREMULTIPLIED);
+       expect_equal(expected_data, out_data, 4, 4);
+}
+
+TEST(PaddingEffectTest, BorderColorIsInLinearGamma) {
+       float data[4 * 1] = {
+               0.2f, 0.4f, 0.6f, 0.8f,
+       };
+       float expected_data[4 * 2] = {
+               0.5005, 0.7051, 0.8677, 0.7998,  // Pixel from data[].
+               0.5005, 0.7051, 0.8677, 0.7998,  // Pixel from the border color.
+       };
+       float out_data[4 * 2];
+
+        EffectChainTester tester(NULL, 1, 2);
+
+       ImageFormat format;
+       format.color_space = COLORSPACE_sRGB;
+       format.gamma_curve = GAMMA_LINEAR;
+
+       FlatInput *input = new FlatInput(format, FORMAT_RGBA_PREMULTIPLIED_ALPHA, GL_FLOAT, 1, 1);
+       input->set_pixel_data(data);
+       tester.get_chain()->add_input(input);
+
+       Effect *effect = tester.get_chain()->add_effect(new PaddingEffect());
+       CHECK(effect->set_int("width", 1));
+       CHECK(effect->set_int("height", 2));
+       CHECK(effect->set_float("left", 0.0f));
+       CHECK(effect->set_float("top", 0.0f));
+
+       RGBATriplet border_color(0.2f, 0.4f, 0.6f, 0.8f);  // Same as the pixel in data[].
+       CHECK(effect->set_vec4("border_color", (float *)&border_color));
+
+       tester.run(out_data, GL_RGBA, COLORSPACE_REC_601_625, GAMMA_REC_601, OUTPUT_ALPHA_POSTMULTIPLIED);
+       expect_equal(expected_data, out_data, 4, 2);
+}
+
+TEST(PaddingEffectTest, DifferentXAndYOffset) {
+       float data[1 * 1] = {
+               1.0f
+       };
+       float expected_data[3 * 3] = {
+               0.0f, 0.0f, 0.0f,
+               0.0f, 0.0f, 1.0f,
+               0.0f, 0.0f, 0.0f,
+       };
+       float out_data[3 * 3];
+
+        EffectChainTester tester(NULL, 3, 3);
+
+       ImageFormat format;
+       format.color_space = COLORSPACE_sRGB;
+       format.gamma_curve = GAMMA_LINEAR;
+
+       FlatInput *input = new FlatInput(format, FORMAT_GRAYSCALE, GL_FLOAT, 1, 1);
+       input->set_pixel_data(data);
+       tester.get_chain()->add_input(input);
+
+       Effect *effect = tester.get_chain()->add_effect(new PaddingEffect());
+       CHECK(effect->set_int("width", 3));
+       CHECK(effect->set_int("height", 3));
+       CHECK(effect->set_float("left", 2.0f));
+       CHECK(effect->set_float("top", 1.0f));
+
+       tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_PREMULTIPLIED);
+       expect_equal(expected_data, out_data, 3, 3);
+}
+
+TEST(PaddingEffectTest, NonIntegerOffset) {
+       float data[4 * 1] = {
+               0.25f, 0.50f, 0.75f, 1.0f,
+       };
+       // Note that the first pixel is completely blank, since the cutoff goes
+       // at the immediate left of the texel.
+       float expected_data[5 * 2] = {
+               0.0f, 0.4375f, 0.6875f, 0.9375f, 0.0f,
+               0.0f, 0.0f, 0.0f, 0.0f, 0.0f,
+       };
+       float out_data[5 * 2];
+
+        EffectChainTester tester(NULL, 5, 2);
+
+       ImageFormat format;
+       format.color_space = COLORSPACE_sRGB;
+       format.gamma_curve = GAMMA_LINEAR;
+
+       FlatInput *input = new FlatInput(format, FORMAT_GRAYSCALE, GL_FLOAT, 4, 1);
+       input->set_pixel_data(data);
+       tester.get_chain()->add_input(input);
+
+       Effect *effect = tester.get_chain()->add_effect(new PaddingEffect());
+       CHECK(effect->set_int("width", 5));
+       CHECK(effect->set_int("height", 2));
+       CHECK(effect->set_float("left", 0.25f));
+       CHECK(effect->set_float("top", 0.0f));
+
+       tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_PREMULTIPLIED);
+       expect_equal(expected_data, out_data, 5, 2);
+}
+
+TEST(PaddingEffectTest, Crop) {
+       float data[2 * 2] = {
+               1.0f, 0.5f,
+               0.8f, 0.3f,
+       };
+       float expected_data[1 * 1] = {
+               0.3f,
+       };
+       float out_data[1 * 1];
+
+        EffectChainTester tester(NULL, 1, 1);
+
+       ImageFormat format;
+       format.color_space = COLORSPACE_sRGB;
+       format.gamma_curve = GAMMA_LINEAR;
+
+       FlatInput *input = new FlatInput(format, FORMAT_GRAYSCALE, GL_FLOAT, 2, 2);
+       input->set_pixel_data(data);
+       tester.get_chain()->add_input(input);
+
+       Effect *effect = tester.get_chain()->add_effect(new PaddingEffect());
+       CHECK(effect->set_int("width", 1));
+       CHECK(effect->set_int("height", 1));
+       CHECK(effect->set_float("left", -1.0f));
+       CHECK(effect->set_float("top", -1.0f));
+
+       tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_PREMULTIPLIED);
+       expect_equal(expected_data, out_data, 1, 1);
+}