Add support for GL_CHROMIUM_pixel_transfer_buffer_object.

gpu/command_buffer/service/gles2_cmd_decoder_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.
 
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 
 #include "base/atomicops.h"
 #include "gpu/command_buffer/common/gl_mock.h"
 #include "gpu/command_buffer/common/gles2_cmd_format.h"
 #include "gpu/command_buffer/common/gles2_cmd_utils.h"
@@ skipping 7032 matching lines @@
     EXPECT_EQ(error::kNoError, ExecuteCmd(is_enabled_cmd));
     EXPECT_NE(0u, *result);
     Disable disable_cmd;
     disable_cmd.Init(state);
     EXPECT_EQ(error::kNoError, ExecuteCmd(disable_cmd));
     EXPECT_EQ(error::kNoError, ExecuteCmd(is_enabled_cmd));
     EXPECT_EQ(0u, *result);
   }
 }
 
+TEST_F(GLES2DecoderTest, PixelTransferBufferObjectCHROMIUM) {
+  GLenum target = GL_PIXEL_UNPACK_TRANSFER_BUFFER_CHROMIUM;
+  const uint8 data[] = {4, 3, 2, 1};
+  BindBuffer bind_cmd;
+  bind_cmd.Init(target, client_buffer_id_);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(bind_cmd));
+  BufferManager* manager = group().buffer_manager();
+  BufferManager::BufferInfo* info =
+      manager->GetBufferInfo(client_buffer_id_);
+  ASSERT_TRUE(info != NULL);
+  EXPECT_EQ(0, info->size());
+
+  int8* shm_buf = static_cast<int8*>(shared_memory_address_);
+  memcpy(shm_buf, data, sizeof(data));
+  BufferData data_cmd;
+  data_cmd.Init(target, sizeof(data), shared_memory_id_, shared_memory_offset_,
+           GL_STREAM_DRAW);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(data_cmd));
+
+  // Check if buffer data is set correctly.
+  const uint8* buf = static_cast<const uint8*>(
+      info->GetRange(0, sizeof(data)));
+  ASSERT_TRUE(buf != NULL);
+  ASSERT_EQ(data[0], buf[0]);
+  ASSERT_EQ(data[sizeof(data) - 1], buf[sizeof(data) - 1]);
+
+  // Check if shared memory buffer is used for texture upload.
+  DoBindTexture(GL_TEXTURE_2D, client_texture_id_, kServiceTextureId);
+  EXPECT_CALL(*gl_, GetError())
+      .WillRepeatedly(Return(GL_NO_ERROR));
+  TexImage2D cmd1;
+  EXPECT_CALL(*gl_, TexImage2D(
+      GL_TEXTURE_2D, 0, GL_RGBA, 1, 1, 0, GL_RGBA,
+      GL_UNSIGNED_BYTE, shm_buf))
+      .Times(1)
+      .RetiresOnSaturation();
+  cmd1.Init(
+      GL_TEXTURE_2D, 0, GL_RGBA, 1, 1, 0, GL_RGBA,
+      GL_UNSIGNED_BYTE, 0, 0);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd1));
+}
+
 // TODO(gman): Complete this test.
 // TEST_F(GLES2DecoderTest, CompressedTexImage2DGLError) {
 // }
 
 // TODO(gman): BufferData
 
 // TODO(gman): BufferDataImmediate
 
 // TODO(gman): BufferSubData
 
@@ skipping 16 matching lines @@
 // TODO(gman): TexImage2DImmediate
 
 // TODO(gman): TexSubImage2DImmediate
 
 // TODO(gman): UseProgram
 
 // TODO(gman): SwapBuffers
 
 }  // namespace gles2
 }  // namespace gpu