Add WebGLImageConversionTest

third_party/WebKit/Source/platform/graphics/gpu/WebGLImageConversionTest.cpp

Index: third_party/WebKit/Source/platform/graphics/gpu/WebGLImageConversionTest.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/gpu/WebGLImageConversionTest.cpp b/third_party/WebKit/Source/platform/graphics/gpu/WebGLImageConversionTest.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..05d4851e971c516e7c48a7d401f3ea62d50ec724
--- /dev/null
+++ b/third_party/WebKit/Source/platform/graphics/gpu/WebGLImageConversionTest.cpp
@@ -0,0 +1,116 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "platform/graphics/gpu/WebGLImageConversion.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace blink {
+
+class WebGLImageConversionTest : public testing::Test {
+protected:
+    void unpackPixels(
+        const uint16_t* sourceData,
+        WebGLImageConversion::DataFormat sourceDataFormat,
+        unsigned pixelsPerRow,
+        uint8_t* destinationData)
+    {
+        WebGLImageConversion::unpackPixels(sourceData, sourceDataFormat, pixelsPerRow, destinationData);
+    }
+    void packPixels(
+        const uint8_t* sourceData,
+        WebGLImageConversion::DataFormat sourceDataFormat,
+        unsigned pixelsPerRow,
+        uint8_t* destinationData)
+    {
+        WebGLImageConversion::packPixels(sourceData, sourceDataFormat, pixelsPerRow, destinationData);
+    }
+};
+
+TEST_F(WebGLImageConversionTest, ConvertRGBA4444toRGBA8)
+{
+    uint16_t sourceData[9] = { 0x1234, 0x3456, 0x1234, 0x3456, 0x1234, 0x3456, 0x1234, 0x3456, 0x1234 };
+    uint8_t expectedData[36] = { 0x11, 0x22, 0x33, 0x44, 0x33, 0x44, 0x55, 0x66, 0x11, 0x22, 0x33, 0x44, 0x33, 0x44, 0x55, 0x66, 0x11, 0x22, 0x33, 0x44, 0x33, 0x44, 0x55, 0x66, 0x11, 0x22, 0x33, 0x44, 0x33, 0x44, 0x55, 0x66, 0x11, 0x22, 0x33, 0x44 };
+    uint8_t destinationData[36];
+    unpackPixels(sourceData, WebGLImageConversion::DataFormatRGBA4444, 9, destinationData);
+    EXPECT_EQ(0, memcmp(expectedData, destinationData, sizeof(destinationData)));
+}
+
+TEST_F(WebGLImageConversionTest, ConvertRGBA5551toRGBA8)
+{
+    uint16_t sourceData[9] = { 0x1234, 0x3456, 0x1234, 0x3456, 0x1234, 0x3456, 0x1234, 0x3456, 0x1234 };
+    uint8_t expectedData[36] = { 0x12, 0x40, 0xd2, 0x0, 0x36, 0x89, 0x5b, 0x0, 0x12, 0x40, 0xd2, 0x0, 0x36, 0x89, 0x5b, 0x0, 0x12, 0x40, 0xd2, 0x0, 0x36, 0x89, 0x5b, 0x0, 0x12, 0x40, 0xd2, 0x0, 0x36, 0x89, 0x5b, 0x0, 0x12, 0x40, 0xd2, 0x0 };
+    uint8_t destinationData[36];
+    unpackPixels(sourceData, WebGLImageConversion::DataFormatRGBA5551, 9, destinationData);
+    EXPECT_EQ(0, memcmp(expectedData, destinationData, sizeof(destinationData)));
+}
+
+TEST_F(WebGLImageConversionTest, ConvertRGBA8toRA8)
+{
+    uint8_t sourceData[40] = { 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56 };
+    uint8_t expectedData[20] = { 0x9a, 0x56, 0x9a, 0x56, 0x9a, 0x56, 0x9a, 0x56, 0x9a, 0x56, 0x9a, 0x56, 0x9a, 0x56, 0x9a, 0x56, 0x9a, 0x56, 0x9a, 0x56 };
+    uint8_t destinationData[20];
+    packPixels(sourceData, WebGLImageConversion::DataFormatRA8, 10, destinationData);
+    EXPECT_EQ(0, memcmp(expectedData, destinationData, sizeof(destinationData)));
+}
+
+TEST_F(WebGLImageConversionTest, convertBGRA8toRGBA8)
+{
+    uint32_t sourceData[9] = { 0x12345678, 0x34567888, 0x12345678, 0x34567888, 0x12345678, 0x34567888, 0x12345678, 0x34567888, 0x12345678 };
+#if CPU(BIG_ENDIAN)
+    uint32_t expectedData[9] = { 0x56341278, 0x78563488, 0x56341278, 0x78563488, 0x56341278, 0x78563488, 0x56341278, 0x78563488, 0x56341278 };
+#else
+    uint32_t expectedData[9] = { 0x12785634, 0x34887856, 0x12785634, 0x34887856, 0x12785634, 0x34887856, 0x12785634, 0x34887856, 0x12785634 };
+#endif
+    uint32_t destinationData[9];
+    unpackPixels(reinterpret_cast<uint16_t*>(&sourceData[0]), WebGLImageConversion::DataFormatBGRA8, 9, reinterpret_cast<uint8_t*>(&destinationData[0]));
+    EXPECT_EQ(0, memcmp(expectedData, destinationData, sizeof(destinationData)));
+}
+
+TEST_F(WebGLImageConversionTest, ConvertRGBA8toR8)
+{
+    uint8_t sourceData[40] = { 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56 };
+    uint8_t expectedData[10] = { 0x9a, 0x9a, 0x9a, 0x9a, 0x9a, 0x9a, 0x9a, 0x9a, 0x9a, 0x9a };
+    uint8_t destinationData[10];
+    packPixels(sourceData, WebGLImageConversion::DataFormatR8, 10, destinationData);
+    EXPECT_EQ(0, memcmp(expectedData, destinationData, sizeof(destinationData)));
+}
+
+TEST_F(WebGLImageConversionTest, ConvertRGBA8toRGBA8)
+{
+    uint8_t sourceData[40] = { 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56 };
+    uint8_t expectedData[40] = { 0x9a, 0xff, 0x9a, 0x56, 0x9a, 0xff, 0x9a, 0x56, 0x9a, 0xff, 0x9a, 0x56, 0x9a, 0xff, 0x9a, 0x56, 0x9a, 0xff, 0x9a, 0x56, 0x9a, 0xff, 0x9a, 0x56, 0x9a, 0xff, 0x9a, 0x56, 0x9a, 0xff, 0x9a, 0x56, 0x9a, 0xff, 0x9a, 0x56, 0x9a, 0xff, 0x9a, 0x56 };
+    uint8_t destinationData[40];
+    packPixels(sourceData, WebGLImageConversion::DataFormatRGBA8, 10, destinationData);
+    EXPECT_EQ(0, memcmp(expectedData, destinationData, sizeof(destinationData)));
+}
+
+TEST_F(WebGLImageConversionTest, ConvertRGBA8ToUnsignedShort4444)
+{
+    uint8_t sourceData[40] = { 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56 };
+    uint16_t expectedData[10] = { 0x3535, 0x3535, 0x3535, 0x3535, 0x3535, 0x3535, 0x3535, 0x3535, 0x3535, 0x3535 };
+    uint16_t destinationData[10];
+    packPixels(sourceData, WebGLImageConversion::DataFormatRGBA4444, 10, reinterpret_cast<uint8_t*>(&destinationData[0]));
+    EXPECT_EQ(0, memcmp(expectedData, destinationData, sizeof(destinationData)));
+}
+
+TEST_F(WebGLImageConversionTest, ConvertRGBA8ToRGBA5551)
+{
+    uint8_t sourceData[40] = { 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56 };
+    uint16_t expectedData[10] = { 0x328c, 0x328c, 0x328c, 0x328c, 0x328c, 0x328c, 0x328c, 0x328c, 0x328c, 0x328c };
+    uint16_t destinationData[10];
+    packPixels(sourceData, WebGLImageConversion::DataFormatRGBA5551, 10, reinterpret_cast<uint8_t*>(&destinationData[0]));
+    EXPECT_EQ(0, memcmp(expectedData, destinationData, sizeof(destinationData)));
+}
+
+TEST_F(WebGLImageConversionTest, ConvertRGBA8ToRGB565)
+{
+    uint8_t sourceData[40] = { 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56, 0x34, 0x56 };
+    uint16_t expectedData[10] = { 0x32a6, 0x32a6, 0x32a6, 0x32a6, 0x32a6, 0x32a6, 0x32a6, 0x32a6, 0x32a6, 0x32a6 };
+    uint16_t destinationData[10];
+    packPixels(sourceData, WebGLImageConversion::DataFormatRGB565, 10, reinterpret_cast<uint8_t*>(&destinationData[0]));
+    EXPECT_EQ(0, memcmp(expectedData, destinationData, sizeof(destinationData)));
+}
+
+} // namespace blink