X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=padding_effect_test.cpp;h=a1a36b9c29e3f6ff22c9dcc3fbd0e40431cf9ef9;hp=f7705883bc5167bb8c74ee5ce9ad2381e274fecf;hb=refs%2Fheads%2F1.3.x-release;hpb=d41e82b7cc456c945dbc460b2ffdc13a80f6505f

diff --git a/padding_effect_test.cpp b/padding_effect_test.cpp
index f770588..a1a36b9 100644
--- a/padding_effect_test.cpp
+++ b/padding_effect_test.cpp
@@ -1,5 +1,6 @@
-// Unit tests for AlphaMultiplicationEffect.
+// Unit tests for PaddingEffect.
 
+#include <epoxy/gl.h>
 #include <stddef.h>
 
 #include "effect_chain.h"
@@ -10,6 +11,8 @@
 #include "test_util.h"
 #include "util.h"
 
+namespace movit {
+
 TEST(PaddingEffectTest, SimpleCenter) {
 	float data[2 * 2] = {
 		1.0f, 0.5f,
@@ -147,10 +150,8 @@ 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,
+		0.1875f, 0.4375f, 0.6875f, 0.9375f, 0.25f,
 		0.0f, 0.0f, 0.0f, 0.0f, 0.0f,
 	};
 	float out_data[5 * 2];
@@ -204,3 +205,109 @@ TEST(PaddingEffectTest, Crop) {
 	tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_FORMAT_PREMULTIPLIED);
 	expect_equal(expected_data, out_data, 1, 1);
 }
+
+TEST(PaddingEffectTest, AlphaIsCorrectEvenWithNonLinearInputsAndOutputs) {
+	float data[2 * 1] = {
+		1.0f,
+		0.8f,
+	};
+	float expected_data[4 * 4] = {
+		1.0f, 1.0f, 1.0f, 0.5f,
+		1.0f, 1.0f, 1.0f, 1.0f,
+		0.8f, 0.8f, 0.8f, 1.0f,
+		1.0f, 1.0f, 1.0f, 0.5f,
+	};
+	float out_data[4 * 4];
+
+	EffectChainTester tester(NULL, 1, 4);
+
+	ImageFormat format;
+	format.color_space = COLORSPACE_REC_601_625;
+	format.gamma_curve = GAMMA_REC_709;
+
+	FlatInput *input = new FlatInput(format, FORMAT_GRAYSCALE, GL_FLOAT, 1, 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", 4));
+	CHECK(effect->set_float("left", 0.0f));
+	CHECK(effect->set_float("top", 1.0f));
+
+	RGBATuple border_color(1.0f, 1.0f, 1.0f, 0.5f);
+	CHECK(effect->set_vec4("border_color", (float *)&border_color));
+
+	tester.run(out_data, GL_RGBA, COLORSPACE_REC_601_625, GAMMA_REC_709, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
+	expect_equal(expected_data, out_data, 4, 4);
+}
+
+TEST(PaddingEffectTest, BorderOffsetTopAndBottom) {
+	float data[2 * 2] = {
+		1.0f, 0.5f,
+		0.8f, 0.3f,
+	};
+	float expected_data[4 * 4] = {
+		0.0f, 0.000f, 0.000f, 0.0f,
+		0.0f, 0.750f, 0.375f, 0.0f,
+		0.0f, 0.800f, 0.300f, 0.0f,
+		0.0f, 0.200f, 0.075f, 0.0f,  // Repeated pixels, 25% opacity.
+	};
+	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));
+	CHECK(effect->set_float("border_offset_top", 0.25f));
+	CHECK(effect->set_float("border_offset_bottom", 0.25f));
+
+	tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_FORMAT_PREMULTIPLIED);
+	expect_equal(expected_data, out_data, 4, 4);
+}
+
+TEST(PaddingEffectTest, BorderOffsetLeftAndRight) {
+	float data[3 * 2] = {
+		1.0f, 0.5f, 0.6f,
+		0.8f, 0.3f, 0.2f,
+	};
+	float expected_data[4 * 2] = {
+		0.750f, 0.5f, 0.3f, 0.0f,
+		0.600f, 0.3f, 0.1f, 0.0f
+	};
+	float out_data[4 * 2];
+
+        EffectChainTester tester(NULL, 4, 2);
+
+	ImageFormat format;
+	format.color_space = COLORSPACE_sRGB;
+	format.gamma_curve = GAMMA_LINEAR;
+
+	FlatInput *input = new FlatInput(format, FORMAT_GRAYSCALE, GL_FLOAT, 3, 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", 2));
+	CHECK(effect->set_float("left", 0.0f));
+	CHECK(effect->set_float("top", 0.0f));
+	CHECK(effect->set_float("border_offset_left", 0.25f));
+	CHECK(effect->set_float("border_offset_right", -0.5f));
+
+	tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_FORMAT_PREMULTIPLIED);
+	expect_equal(expected_data, out_data, 4, 2);
+}
+
+}  // namespace movit