Fix LUMANINCE_ALPHA issue

gpu/command_buffer/common/gles2_cmd_utils_unittest.cc

+// Copyright (c) 2011 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 "gpu/command_buffer/common/gles2_cmd_utils.h"
+
+#include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+#include <GLES2/gles2_command_buffer.h>
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace gpu {
+namespace gles2 {
+
+class GLES2UtilTest : public testing:: Test {
+ public:
+  GLES2UtilTest()
+      : util_(0) {
+  }
+
+ protected:
+  GLES2Util util_;
+};
+
+TEST_F(GLES2UtilTest, ComputeImageDataSizeFormats) {
+  const int kWidth = 16;
+  const int kHeight = 12;
+  uint32 size;
+  EXPECT_TRUE(GLES2Util::ComputeImageDataSize(
+      kWidth, kHeight, GL_RGB, GL_UNSIGNED_BYTE, 1, &size));
+  EXPECT_EQ(kWidth * kHeight * 3, size);
+  EXPECT_TRUE(GLES2Util::ComputeImageDataSize(
+      kWidth, kHeight, GL_RGBA, GL_UNSIGNED_BYTE, 1, &size));
+  EXPECT_EQ(kWidth * kHeight * 4, size);
+  EXPECT_TRUE(GLES2Util::ComputeImageDataSize(
+      kWidth, kHeight, GL_LUMINANCE, GL_UNSIGNED_BYTE, 1, &size));
+  EXPECT_EQ(kWidth * kHeight * 1, size);
+  EXPECT_TRUE(GLES2Util::ComputeImageDataSize(
+      kWidth, kHeight, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, 1, &size));
+  EXPECT_EQ(kWidth * kHeight * 2, size);
+  EXPECT_TRUE(GLES2Util::ComputeImageDataSize(
+      kWidth, kHeight, GL_BGRA_EXT, GL_UNSIGNED_BYTE, 1, &size));
+  EXPECT_EQ(kWidth * kHeight * 4, size);
+  EXPECT_TRUE(GLES2Util::ComputeImageDataSize(
+      kWidth, kHeight, GL_ALPHA, GL_UNSIGNED_BYTE, 1, &size));
+  EXPECT_EQ(kWidth * kHeight * 1, size);
+  EXPECT_TRUE(GLES2Util::ComputeImageDataSize(
+      kWidth, kHeight, GL_DEPTH_COMPONENT, GL_UNSIGNED_SHORT, 1, &size));
+  EXPECT_EQ(kWidth * kHeight * 2, size);
+  EXPECT_TRUE(GLES2Util::ComputeImageDataSize(
+      kWidth, kHeight, GL_DEPTH_STENCIL_OES, GL_UNSIGNED_INT_24_8_OES, 1,
+      &size));
+  EXPECT_EQ(kWidth * kHeight * 4, size);
+}
+
+TEST_F(GLES2UtilTest, ComputeImageDataSizeTypes) {
+  const int kWidth = 16;
+  const int kHeight = 12;
+  uint32 size;
+  EXPECT_TRUE(GLES2Util::ComputeImageDataSize(
+      kWidth, kHeight, GL_RGBA, GL_UNSIGNED_BYTE, 1, &size));
+  EXPECT_EQ(kWidth * kHeight * 4, size);
+  EXPECT_TRUE(GLES2Util::ComputeImageDataSize(
+      kWidth, kHeight, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, 1, &size));
+  EXPECT_EQ(kWidth * kHeight * 2, size);
+  EXPECT_TRUE(GLES2Util::ComputeImageDataSize(
+      kWidth, kHeight, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1, 1, &size));
+  EXPECT_EQ(kWidth * kHeight * 2, size);
+  EXPECT_TRUE(GLES2Util::ComputeImageDataSize(
+      kWidth, kHeight, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, 1, &size));
+  EXPECT_EQ(kWidth * kHeight * 2, size);
+}
+
+TEST_F(GLES2UtilTest, ComputeImageDataSizeUnpackAlignment) {
+  const int kWidth = 19;
+  const int kHeight = 12;
+  uint32 size;
+  EXPECT_TRUE(GLES2Util::ComputeImageDataSize(
+      kWidth, kHeight, GL_RGB, GL_UNSIGNED_BYTE, 1, &size));
+  EXPECT_EQ(kWidth * kHeight * 3, size);
+  EXPECT_TRUE(GLES2Util::ComputeImageDataSize(
+      kWidth, kHeight, GL_RGB, GL_UNSIGNED_BYTE, 2, &size));
+  EXPECT_EQ((kWidth * 3 + 1) * (kHeight - 1) +
+            kWidth * 3, size);
+  EXPECT_TRUE(GLES2Util::ComputeImageDataSize(
+      kWidth, kHeight, GL_RGB, GL_UNSIGNED_BYTE, 4, &size));
+  EXPECT_EQ((kWidth * 3 + 3) * (kHeight - 1) +
+            kWidth * 3, size);
+  EXPECT_TRUE(GLES2Util::ComputeImageDataSize(
+      kWidth, kHeight, GL_RGB, GL_UNSIGNED_BYTE, 8, &size));
+  EXPECT_EQ((kWidth * 3 + 7) * (kHeight - 1) +
+            kWidth * 3, size);
+}
+
+}  // namespace gles2
+}  // namespace gpu
+