Add support for GL_CHROMIUM_pixel_transfer_buffer_object.

gpu/command_buffer/client/buffer_tracker_unittest.cc

+// Copyright (c) 2012 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.
+
+// Tests for the BufferTracker.
+
+#include "gpu/command_buffer/client/buffer_tracker.h"
+
+#include <GLES2/gl2ext.h>
+#include "base/memory/scoped_ptr.h"
+#include "gpu/command_buffer/client/client_test_helper.h"
+#include "gpu/command_buffer/client/gles2_cmd_helper.h"
+#include "gpu/command_buffer/client/mapped_memory.h"
+#include "gpu/command_buffer/common/command_buffer.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace gpu {
+namespace gles2 {
+
+class BufferTrackerTest : public testing::Test {
+ protected:
+  static const int32 kNumCommandEntries = 400;
+  static const int32 kCommandBufferSizeBytes =
+      kNumCommandEntries * sizeof(CommandBufferEntry);
+
+  virtual void SetUp() {
+    command_buffer_.reset(new MockClientCommandBuffer());
+    helper_.reset(new GLES2CmdHelper(command_buffer_.get()));
+    helper_->Initialize(kCommandBufferSizeBytes);
+    mapped_memory_.reset(new MappedMemoryManager(helper_.get()));
+    buffer_tracker_.reset(new BufferTracker(mapped_memory_.get()));
+  }
+
+  virtual void TearDown() {
+    buffer_tracker_.reset();
+    mapped_memory_.reset();
+    helper_.reset();
+    command_buffer_.reset();
+  }
+
+  scoped_ptr<CommandBuffer> command_buffer_;
+  scoped_ptr<GLES2CmdHelper> helper_;
+  scoped_ptr<MappedMemoryManager> mapped_memory_;
+  scoped_ptr<BufferTracker> buffer_tracker_;
+};
+
+TEST_F(BufferTrackerTest, Basic) {
+  const GLuint kId1 = 123;
+  const GLuint kId2 = 124;
+  const GLsizeiptr size = 64;
+
+  // Check we can create a Buffer.
+  BufferTracker::Buffer* buffer = buffer_tracker_->CreateBuffer(kId1, size);

[greggman, 2012/11/19 04:50:14]

This isn't really checking the buffer actually allocated shared memory. Should
it?

[reveman, 2012/11/20 16:49:30]

Done.

+  ASSERT_TRUE(buffer != NULL);
+  // Check we can get the same Buffer.
+  EXPECT_EQ(buffer, buffer_tracker_->GetBuffer(kId1));
+  // Check we get nothing for a non-existent buffer.
+  EXPECT_TRUE(buffer_tracker_->GetBuffer(kId2) == NULL);
+  // Check we can delete the buffer.
+  buffer_tracker_->RemoveBuffer(kId1);

[greggman, 2012/11/19 04:50:14]

This isn't checking the shared memory was freed, should it?

[reveman, 2012/11/20 16:49:30]

Done.

+  // Check we get nothing for a non-existent buffer.
+  EXPECT_TRUE(buffer_tracker_->GetBuffer(kId1) == NULL);
+}
+
+}  // namespace gles2
+}  // namespace gpu