command_buffer: Implement path rendering functions for CHROMIUM_path_rendering

gpu/command_buffer/service/gles2_cmd_decoder_unittest_extensions.cc

 // Copyright 2014 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 "gpu/command_buffer/common/gles2_cmd_format.h"
 #include "gpu/command_buffer/common/gles2_cmd_utils.h"
 #include "gpu/command_buffer/service/gles2_cmd_decoder_unittest.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gl/gl_mock.h"
 
 using ::gfx::MockGLInterface;
 using ::testing::_;
+using ::testing::Return;
 
 namespace gpu {
 namespace gles2 {
 
+// Class to use to test that functions which need feature flags or
+// extensions always return INVALID_OPERATION if the feature flags is not
+// enabled or extension is not present.
+class GLES2DecoderTestDisabledExtensions : public GLES2DecoderTest {
+ public:
+  GLES2DecoderTestDisabledExtensions() {}
+};
+INSTANTIATE_TEST_CASE_P(Service,
+                        GLES2DecoderTestDisabledExtensions,
+                        ::testing::Bool());
+
+TEST_P(GLES2DecoderTestDisabledExtensions, CHROMIUMPathRenderingDisabled) {
+  const GLuint kClientPathId = 0;
+  {
+    cmds::MatrixLoadfCHROMIUMImmediate& cmd =
+        *GetImmediateAs<cmds::MatrixLoadfCHROMIUMImmediate>();
+    GLfloat temp[16] = {
+        0,
+    };
+    cmd.Init(GL_PATH_MODELVIEW_CHROMIUM, temp);
+    EXPECT_EQ(error::kNoError, ExecuteImmediateCmd(cmd, sizeof(temp)));
+    EXPECT_EQ(GL_INVALID_OPERATION, GetGLError());
+  }
+  {
+    cmds::MatrixLoadIdentityCHROMIUM cmd;
+    cmd.Init(GL_PATH_PROJECTION_CHROMIUM);
+    EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+    EXPECT_EQ(GL_INVALID_OPERATION, GetGLError());
+  }
+  {
+    cmds::GenPathsCHROMIUM cmd;
+    cmd.Init(0, 0);
+    EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+    EXPECT_EQ(GL_INVALID_OPERATION, GetGLError());
+  }
+  {
+    cmds::DeletePathsCHROMIUM cmd;
+    cmd.Init(0, 0);
+    EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+    EXPECT_EQ(GL_INVALID_OPERATION, GetGLError());
+  }
+  {
+    cmds::IsPathCHROMIUM cmd;
+    cmd.Init(kClientPathId, shared_memory_id_, shared_memory_offset_);
+    EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+    EXPECT_EQ(GL_INVALID_OPERATION, GetGLError());
+  }
+  {
+    cmds::PathCommandsCHROMIUM cmd;
+    cmd.Init(kClientPathId, 0, 0, 0, 0, 0, 0);
+    EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+    EXPECT_EQ(GL_INVALID_OPERATION, GetGLError());
+  }
+  {
+    cmds::PathParameterfCHROMIUM cmd;
+    cmd.Init(kClientPathId, GL_PATH_STROKE_WIDTH_CHROMIUM, 1.0f);
+    EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+    EXPECT_EQ(GL_INVALID_OPERATION, GetGLError());
+  }
+  {
+    cmds::PathParameteriCHROMIUM cmd;
+    cmd.Init(kClientPathId, GL_PATH_STROKE_WIDTH_CHROMIUM, 1);
+    EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+    EXPECT_EQ(GL_INVALID_OPERATION, GetGLError());
+  }
+  {
+    cmds::PathStencilFuncCHROMIUM cmd;
+    cmd.Init(GL_NEVER, 2, 3);
+    EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+    EXPECT_EQ(GL_INVALID_OPERATION, GetGLError());
+  }
+  {
+    cmds::StencilFillPathCHROMIUM cmd;
+    cmd.Init(kClientPathId, GL_COUNT_UP_CHROMIUM, 1);
+    EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+    EXPECT_EQ(GL_INVALID_OPERATION, GetGLError());
+  }
+  {
+    cmds::StencilStrokePathCHROMIUM cmd;
+    cmd.Init(kClientPathId, 1, 2);
+    EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+    EXPECT_EQ(GL_INVALID_OPERATION, GetGLError());
+  }
+  {
+    cmds::CoverFillPathCHROMIUM cmd;
+    cmd.Init(kClientPathId);
+    EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+    EXPECT_EQ(GL_INVALID_OPERATION, GetGLError());
+  }
+  {
+    cmds::CoverStrokePathCHROMIUM cmd;
+    cmd.Init(kClientPathId);
+    EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+    EXPECT_EQ(GL_INVALID_OPERATION, GetGLError());
+  }
+  {
+    cmds::StencilThenCoverFillPathCHROMIUM cmd;
+    cmd.Init(kClientPathId, GL_COUNT_UP_CHROMIUM, 1);
+    EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+    EXPECT_EQ(GL_INVALID_OPERATION, GetGLError());
+  }
+  {
+    cmds::StencilThenCoverStrokePathCHROMIUM cmd;
+    cmd.Init(kClientPathId, 1, 2);
+    EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+    EXPECT_EQ(GL_INVALID_OPERATION, GetGLError());
+  }
+}
+
 class GLES2DecoderTestWithCHROMIUMPathRendering : public GLES2DecoderTest {
  public:
-  GLES2DecoderTestWithCHROMIUMPathRendering() {}
+  GLES2DecoderTestWithCHROMIUMPathRendering() : client_path_id_(125) {}
+
   virtual void SetUp() OVERRIDE {
     InitState init;
     init.gl_version = "opengl es 3.1";
     init.has_alpha = true;
     init.has_depth = true;
     init.request_alpha = true;
     init.request_depth = true;
     init.bind_generates_resource = true;
     init.extensions = "GL_NV_path_rendering";
     InitDecoder(init);
+
+    EXPECT_CALL(*gl_, GenPathsNV(1))
+        .WillOnce(Return(kServicePathId))
+        .RetiresOnSaturation();
+    cmds::GenPathsCHROMIUM cmd;
+    cmd.Init(client_path_id_, 1);
+    EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
   }
+
+ protected:
+  GLuint client_path_id_;
+  static const GLuint kServicePathId = 311;
 };
 
 INSTANTIATE_TEST_CASE_P(Service,
                         GLES2DecoderTestWithCHROMIUMPathRendering,
                         ::testing::Bool());
+
+TEST_P(GLES2DecoderTestWithCHROMIUMPathRendering, GenDeletePaths) {
+  static GLuint kFirstClientID = client_path_id_ + 88;
+  static GLsizei kPathCount = 58;
+  static GLuint kFirstCreatedServiceID = 8000;
+
+  // GenPaths range 0 causes no calls.
+  cmds::GenPathsCHROMIUM gen_cmd;
+  gen_cmd.Init(kFirstClientID, 0);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(gen_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  // DeletePaths range 0 causes no calls.
+  cmds::DeletePathsCHROMIUM delete_cmd;
+  delete_cmd.Init(kFirstClientID, 0);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(delete_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  // DeletePaths client 0 causes no calls and no errors.
+  delete_cmd.Init(0, 1);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(delete_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  // DeletePaths with a big range should not cause any deletes.
+  delete_cmd.Init(client_path_id_ + 1,
+                  std::numeric_limits<GLsizei>::max() - client_path_id_ - 1);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(delete_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  delete_cmd.Init(std::numeric_limits<GLsizei>::max() + 1,
+                  std::numeric_limits<GLsizei>::max());
+  EXPECT_EQ(error::kNoError, ExecuteCmd(delete_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  // Normal Gen and Delete should cause the normal calls.
+  EXPECT_CALL(*gl_, GenPathsNV(kPathCount))
+      .WillOnce(Return(kFirstCreatedServiceID))
+      .RetiresOnSaturation();
+
+  gen_cmd.Init(kFirstClientID, kPathCount);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(gen_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  EXPECT_CALL(*gl_, DeletePathsNV(kFirstCreatedServiceID, kPathCount))
+      .RetiresOnSaturation();
+
+  delete_cmd.Init(kFirstClientID, kPathCount);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(delete_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+}
+
+TEST_P(GLES2DecoderTestWithCHROMIUMPathRendering, GenDeleteRanges) {
+  static GLuint kFirstClientID = client_path_id_ + 77;
+  static GLsizei kPathCount = 5800;
+  static GLuint kFirstCreatedServiceID = 8000;
+
+  // Create a range of path names, delete one in middle and then
+  // the rest. Expect 3 DeletePath calls.
+  EXPECT_CALL(*gl_, GenPathsNV(kPathCount))
+      .WillOnce(Return(kFirstCreatedServiceID))
+      .RetiresOnSaturation();
+  cmds::GenPathsCHROMIUM gen_cmd;
+  gen_cmd.Init(kFirstClientID, kPathCount);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(gen_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  EXPECT_CALL(*gl_, DeletePathsNV(kFirstCreatedServiceID + (kPathCount / 2), 1))
+      .RetiresOnSaturation();
+
+  cmds::DeletePathsCHROMIUM delete_cmd;
+  delete_cmd.Init(kFirstClientID + (kPathCount / 2), 1);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(delete_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  EXPECT_CALL(*gl_, DeletePathsNV(kFirstCreatedServiceID, (kPathCount / 2)))
+      .RetiresOnSaturation();
+  EXPECT_CALL(*gl_,
+              DeletePathsNV(kFirstCreatedServiceID + (kPathCount / 2) + 1,
+                            (kPathCount / 2) - 1)).RetiresOnSaturation();
+
+  delete_cmd.Init(kFirstClientID, kPathCount);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(delete_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+}
+
+TEST_P(GLES2DecoderTestWithCHROMIUMPathRendering, GenDeleteManyPaths) {
+  static GLuint kFirstClientID = client_path_id_ + 1;
+  static GLsizei kPathCount = std::numeric_limits<GLsizei>::max();
+  static GLuint kFirstCreatedServiceID = 8000;
+
+  EXPECT_CALL(*gl_, GenPathsNV(kPathCount))
+      .WillOnce(Return(kFirstCreatedServiceID))
+      .RetiresOnSaturation();
+
+  // GenPaths with big range.
+  cmds::GenPathsCHROMIUM gen_cmd;
+  gen_cmd.Init(kFirstClientID, kPathCount);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(gen_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  // Path range wraps, so we get connection error.
+  gen_cmd.Init(kFirstClientID + kPathCount, kPathCount);
+  EXPECT_EQ(error::kInvalidArguments, ExecuteCmd(gen_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  EXPECT_CALL(*gl_, DeletePathsNV(kFirstCreatedServiceID, kPathCount))
+      .RetiresOnSaturation();
+
+  cmds::DeletePathsCHROMIUM delete_cmd;
+  delete_cmd.Init(kFirstClientID, kPathCount);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(delete_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  // Delete every possible path.
+  // We run into the one created for client_path_id_.
+  EXPECT_CALL(*gl_, DeletePathsNV(kServicePathId, 1)).RetiresOnSaturation();
+
+  delete_cmd.Init(1u, kPathCount);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(delete_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  delete_cmd.Init(static_cast<GLuint>(kPathCount) + 1u, kPathCount);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(delete_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  // Allocate every possible path, delete few, allocate them back and
+  // expect minimum amount of calls.
+  EXPECT_CALL(*gl_, GenPathsNV(kPathCount))
+      .WillOnce(Return(static_cast<GLuint>(1u)))
+      .WillOnce(Return(static_cast<GLuint>(kPathCount) + 1u))
+      .RetiresOnSaturation();
+
+  gen_cmd.Init(1u, kPathCount);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(gen_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  gen_cmd.Init(static_cast<GLuint>(kPathCount) + 1u, kPathCount);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(gen_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  gen_cmd.Init(static_cast<GLuint>(kPathCount) * 2u + 2u, kPathCount);
+  EXPECT_EQ(error::kInvalidArguments, ExecuteCmd(gen_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  EXPECT_CALL(*gl_, DeletePathsNV(kFirstClientID, 4)).RetiresOnSaturation();
+
+  delete_cmd.Init(kFirstClientID, 4);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(delete_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  EXPECT_CALL(*gl_, DeletePathsNV(kFirstClientID * 3, 1)).RetiresOnSaturation();
+
+  delete_cmd.Init(kFirstClientID * 3, 1);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(delete_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  EXPECT_CALL(*gl_, GenPathsNV(1))
+      .WillOnce(Return(kFirstClientID))
+      .WillOnce(Return(kFirstClientID + 1))
+      .WillOnce(Return(kFirstClientID + 2))
+      .WillOnce(Return(kFirstClientID + 3))
+      .RetiresOnSaturation();
+
+  for (int i = 0; i < 4; ++i) {
+    gen_cmd.Init(kFirstClientID + i, 1);
+    EXPECT_EQ(error::kNoError, ExecuteCmd(gen_cmd));
+    EXPECT_EQ(GL_NO_ERROR, GetGLError());
+  }
+
+  EXPECT_CALL(*gl_, GenPathsNV(1))
+      .WillOnce(Return(kFirstClientID * 3))
+      .RetiresOnSaturation();
+  gen_cmd.Init(kFirstClientID * 3, 1);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(gen_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  EXPECT_CALL(*gl_, DeletePathsNV(1u, kPathCount)).RetiresOnSaturation();
+  EXPECT_CALL(*gl_,
+              DeletePathsNV(static_cast<GLuint>(kPathCount) + 1u, kPathCount))
+      .RetiresOnSaturation();
+
+  delete_cmd.Init(1u, kPathCount);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(delete_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  delete_cmd.Init(static_cast<GLuint>(kPathCount) + 1u, kPathCount);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(delete_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  // Cleanup: return the client_path_id_ as a path.
+  EXPECT_CALL(*gl_, GenPathsNV(1))
+      .WillOnce(Return(static_cast<GLuint>(kServicePathId)))
+      .RetiresOnSaturation();
+
+  gen_cmd.Init(client_path_id_, 1);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(gen_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+}
+
+TEST_P(GLES2DecoderTestWithCHROMIUMPathRendering,
+       GenPathsCHROMIUMInvalidCalls) {
+  static GLuint kFirstClientID = client_path_id_ + 88;
+  static GLsizei kPathCount = 5800;
+  static GLuint kFirstCreatedServiceID = 8000;
+
+  // Range < 0 is causes gl error.
+  cmds::GenPathsCHROMIUM gen_cmd;
+  gen_cmd.Init(kFirstClientID, -1);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(gen_cmd));
+  EXPECT_EQ(GL_INVALID_VALUE, GetGLError());
+
+  // Path 0 is invalid client id, connection error.
+  gen_cmd.Init(0, kPathCount);
+  EXPECT_EQ(error::kInvalidArguments, ExecuteCmd(gen_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  // Too big range causes client id to wrap, connection error.
+  gen_cmd.Init(std::numeric_limits<GLsizei>::max() + 3,
+               std::numeric_limits<GLsizei>::max());
+  EXPECT_EQ(error::kInvalidArguments, ExecuteCmd(gen_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  // Creating duplicate client_ids cause connection error.
+  EXPECT_CALL(*gl_, GenPathsNV(kPathCount))
+      .WillOnce(Return(kFirstCreatedServiceID))
+      .RetiresOnSaturation();
+
+  gen_cmd.Init(kFirstClientID, kPathCount);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(gen_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  // Create duplicate by executing the same cmd.
+  EXPECT_EQ(error::kInvalidArguments, ExecuteCmd(gen_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  // Create duplicate by creating a range that contains
+  // an already existing client path id.
+  gen_cmd.Init(kFirstClientID - 1, 2);
+  EXPECT_EQ(error::kInvalidArguments, ExecuteCmd(gen_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  // Cleanup.
+  EXPECT_CALL(*gl_, DeletePathsNV(kFirstCreatedServiceID, kPathCount))
+      .RetiresOnSaturation();
+  cmds::DeletePathsCHROMIUM delete_cmd;
+  delete_cmd.Init(kFirstClientID, kPathCount);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(delete_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+}
+
+TEST_P(GLES2DecoderTestWithCHROMIUMPathRendering,
+       DeletePathsCHROMIUMInvalidCalls) {
+  static GLuint kFirstClientID = client_path_id_ + 88;
+
+  // Range < 0 is causes gl error.
+  cmds::DeletePathsCHROMIUM delete_cmd;
+  delete_cmd.Init(kFirstClientID, -1);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(delete_cmd));
+  EXPECT_EQ(GL_INVALID_VALUE, GetGLError());
+
+  // Too big range causes client id to wrap, connection error.
+  delete_cmd.Init(std::numeric_limits<GLsizei>::max() + 3,
+                  std::numeric_limits<GLsizei>::max());
+  EXPECT_EQ(error::kInvalidArguments, ExecuteCmd(delete_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+}
+
+TEST_P(GLES2DecoderTestWithCHROMIUMPathRendering,
+       PathCommandsCHROMIUMInvalidCalls) {
+  static GLsizei kCorrectCoordCount = 14;
+  static GLsizei kCorrectCommandCount = 5;
+
+  GLfloat* coords = GetSharedMemoryAs<GLfloat*>();
+  unsigned commands_offset = sizeof(GLfloat) * kCorrectCoordCount;
+  GLubyte* commands = GetSharedMemoryAsWithOffset<GLubyte*>(commands_offset);
+  for (int i = 0; i < kCorrectCoordCount; ++i) {
+    coords[i] = 5.0f * i;
+  }
+  commands[0] = GL_MOVE_TO_CHROMIUM;
+  commands[1] = GL_CLOSE_PATH_CHROMIUM;
+  commands[2] = GL_LINE_TO_CHROMIUM;
+  commands[3] = GL_QUADRATIC_CURVE_TO_CHROMIUM;
+  commands[4] = GL_CUBIC_CURVE_TO_CHROMIUM;
+
+  EXPECT_CALL(*gl_,
+              PathCommandsNV(kServicePathId,
+                             kCorrectCommandCount,
+                             commands,
+                             kCorrectCoordCount,
+                             GL_FLOAT,
+                             coords)).RetiresOnSaturation();
+
+  cmds::PathCommandsCHROMIUM cmd;
+
+  // Reference call -- this succeeds.
+  cmd.Init(client_path_id_,
+           kCorrectCommandCount,
+           shared_memory_id_,
+           shared_memory_offset_ + commands_offset,
+           kCorrectCoordCount,
+           shared_memory_id_,
+           shared_memory_offset_);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  EXPECT_CALL(*gl_, PathCommandsNV(_, _, _, _, _, _)).Times(0);
+
+  // Invalid client id fails.
+  cmd.Init(client_path_id_ - 1,
+           kCorrectCommandCount,
+           shared_memory_id_,
+           shared_memory_offset_,
+           kCorrectCoordCount,
+           shared_memory_id_,
+           shared_memory_offset_);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+  EXPECT_EQ(GL_INVALID_OPERATION, GetGLError());
+
+  // The numCommands < 0.
+  cmd.Init(client_path_id_,
+           -1,
+           shared_memory_id_,
+           shared_memory_offset_,
+           kCorrectCoordCount,
+           shared_memory_id_,
+           shared_memory_offset_);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+  EXPECT_EQ(GL_INVALID_VALUE, GetGLError());
+
+  // The numCoords < 0.
+  cmd.Init(client_path_id_,
+           kCorrectCommandCount,
+           shared_memory_id_,
+           shared_memory_offset_,
+           -1,
+           shared_memory_id_,
+           shared_memory_offset_);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+  EXPECT_EQ(GL_INVALID_VALUE, GetGLError());
+
+  // Big command counts.
+  cmd.Init(client_path_id_,
+           std::numeric_limits<GLsizei>::max(),
+           shared_memory_id_,
+           shared_memory_offset_ + commands_offset,
+           kCorrectCoordCount,
+           shared_memory_id_,
+           shared_memory_offset_);
+  EXPECT_EQ(error::kOutOfBounds, ExecuteCmd(cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  // Invalid SHM cases.
+  cmd.Init(client_path_id_,
+           kCorrectCommandCount,
+           kInvalidSharedMemoryId,
+           shared_memory_offset_ + commands_offset,
+           kCorrectCoordCount,
+           shared_memory_id_,
+           shared_memory_offset_);
+  EXPECT_EQ(error::kOutOfBounds, ExecuteCmd(cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  cmd.Init(client_path_id_,
+           kCorrectCommandCount,
+           shared_memory_id_,
+           kInvalidSharedMemoryOffset,
+           kCorrectCoordCount,
+           shared_memory_id_,
+           shared_memory_offset_);
+  EXPECT_EQ(error::kOutOfBounds, ExecuteCmd(cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  cmd.Init(client_path_id_,
+           kCorrectCommandCount,
+           shared_memory_id_,
+           shared_memory_offset_ + commands_offset,
+           kCorrectCoordCount,
+           kInvalidSharedMemoryId,
+           shared_memory_offset_);
+  EXPECT_EQ(error::kOutOfBounds, ExecuteCmd(cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  cmd.Init(client_path_id_,
+           kCorrectCommandCount,
+           shared_memory_id_,
+           shared_memory_offset_ + commands_offset,
+           kCorrectCoordCount,
+           shared_memory_id_,
+           kInvalidSharedMemoryOffset);
+  EXPECT_EQ(error::kOutOfBounds, ExecuteCmd(cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  // NULL shm command id. Currently causes gl error, though client should not
+  // let this through.
+  cmd.Init(client_path_id_,
+           kCorrectCommandCount,
+           0,
+           0,
+           kCorrectCoordCount,
+           shared_memory_id_,
+           shared_memory_offset_);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+  EXPECT_EQ(GL_INVALID_OPERATION, GetGLError());
+
+  // The coordCount not matching what is in commands.
+  // Expects kCorrectCoordCount+2 coords.
+  commands[1] = GL_MOVE_TO_CHROMIUM;
+  cmd.Init(client_path_id_,
+           kCorrectCommandCount,
+           shared_memory_id_,
+           shared_memory_offset_ + commands_offset,
+           kCorrectCoordCount,
+           shared_memory_id_,
+           shared_memory_offset_);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+  EXPECT_EQ(GL_INVALID_OPERATION, GetGLError());
+
+  // The coordCount not matching what is in commands.
+  // Expects kCorrectCoordCount-2 coords.
+  commands[0] = GL_CLOSE_PATH_CHROMIUM;
+  commands[1] = GL_CLOSE_PATH_CHROMIUM;
+  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+  EXPECT_EQ(GL_INVALID_OPERATION, GetGLError());
+
+  // NULL shm coord ids. Currently causes gl error, though client should not let
+  // this through.
+  cmd.Init(client_path_id_,
+           kCorrectCommandCount,
+           shared_memory_id_,
+           shared_memory_offset_ + commands_offset,
+           kCorrectCoordCount,
+           0,
+           0);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+  EXPECT_EQ(GL_INVALID_OPERATION, GetGLError());
+}
+
+TEST_P(GLES2DecoderTestWithCHROMIUMPathRendering,
+       PathCommandsCHROMIUMEmptyCommands) {
+  EXPECT_CALL(*gl_, PathCommandsNV(kServicePathId, 0, NULL, 0, GL_FLOAT, NULL))
+      .RetiresOnSaturation();
+  cmds::PathCommandsCHROMIUM cmd;
+  cmd.Init(client_path_id_, 0, 0, 0, 0, 0, 0);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+}
+
+TEST_P(GLES2DecoderTestWithCHROMIUMPathRendering,
+       PathCommandsCHROMIUMInvalidCommands) {
+  EXPECT_CALL(*gl_, PathCommandsNV(_, _, _, _, _, _)).Times(0);
+
+  cmds::PathCommandsCHROMIUM cmd;
+
+  {
+    const GLsizei kCoordCount = 2;
+    const GLsizei kCommandCount = 2;
+    GLfloat* coords = GetSharedMemoryAs<GLfloat*>();
+    unsigned commands_offset = sizeof(GLfloat) * kCoordCount;
+    GLubyte* commands = GetSharedMemoryAsWithOffset<GLubyte*>(commands_offset);
+
+    coords[0] = 5.0f;
+    coords[1] = 5.0f;
+    commands[0] = 0x3;  // Token MOVE_TO_RELATIVE in NV_path_rendering.
+    commands[1] = GL_CLOSE_PATH_CHROMIUM;
+
+    cmd.Init(client_path_id_ - 1,
+             kCommandCount,
+             shared_memory_id_,
+             shared_memory_offset_,
+             kCoordCount,
+             shared_memory_id_,
+             shared_memory_offset_);
+    EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+    EXPECT_EQ(GL_INVALID_OPERATION, GetGLError());
+  }
+  {
+    const GLsizei kCoordCount = 8;
+    const GLsizei kCommandCount = 4;
+    GLfloat* coords = GetSharedMemoryAs<GLfloat*>();
+    unsigned commands_offset = sizeof(GLfloat) * kCoordCount;
+    GLubyte* commands = GetSharedMemoryAsWithOffset<GLubyte*>(commands_offset);
+
+    for (int i = 0; i < kCoordCount; ++i) {
+      coords[i] = 5.0f * i;
+    }
+    commands[0] = GL_MOVE_TO_CHROMIUM;
+    commands[1] = GL_MOVE_TO_CHROMIUM;
+    commands[2] = 'M';  // Synonym to MOVE_TO in NV_path_rendering.
+    commands[3] = GL_MOVE_TO_CHROMIUM;
+
+    cmd.Init(client_path_id_ - 1,
+             kCommandCount,
+             shared_memory_id_,
+             shared_memory_offset_,
+             kCoordCount,
+             shared_memory_id_,
+             shared_memory_offset_);
+    EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+    EXPECT_EQ(GL_INVALID_OPERATION, GetGLError());
+  }
+}
+
+TEST_P(GLES2DecoderTestWithCHROMIUMPathRendering, PathParameterXCHROMIUM) {
+  static GLuint kFirstClientID = client_path_id_ + 88;
+  static GLsizei kPathCount = 2;
+  static GLuint kFirstCreatedServiceID = 8000;
+
+  // Create a paths so that we do not modify client_path_id_
+  EXPECT_CALL(*gl_, GenPathsNV(kPathCount))
+      .WillOnce(Return(kFirstCreatedServiceID))
+      .RetiresOnSaturation();
+  cmds::GenPathsCHROMIUM gen_cmd;
+  gen_cmd.Init(kFirstClientID, kPathCount);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(gen_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  cmds::PathParameterfCHROMIUM fcmd;
+  cmds::PathParameteriCHROMIUM icmd;
+  const struct {
+    GLenum pname;
+    GLfloat value;
+  } kTestcases[] = {
+        {GL_PATH_STROKE_WIDTH_CHROMIUM, 1.0f},
+        {GL_PATH_MITER_LIMIT_CHROMIUM, 500.0f},
+        {GL_PATH_INITIAL_END_CAP_CHROMIUM, GL_FLAT_CHROMIUM},
+        {GL_PATH_TERMINAL_END_CAP_CHROMIUM, GL_SQUARE_CHROMIUM},
+        {GL_PATH_JOIN_STYLE_CHROMIUM, GL_MITER_REVERT_CHROMIUM},
+    };
+
+  for (auto& testcase : kTestcases) {
+    EXPECT_CALL(*gl_,
+                PathParameterfNV(
+                    kFirstCreatedServiceID, testcase.pname, testcase.value))
+        .Times(1)
+        .RetiresOnSaturation();
+    fcmd.Init(kFirstClientID, testcase.pname, testcase.value);
+    EXPECT_EQ(error::kNoError, ExecuteCmd(fcmd));
+    EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+    EXPECT_CALL(*gl_,
+                PathParameteriNV(kFirstCreatedServiceID + 1,
+                                 testcase.pname,
+                                 static_cast<GLint>(testcase.value)))
+        .Times(1)
+        .RetiresOnSaturation();
+    icmd.Init(
+        kFirstClientID + 1, testcase.pname, static_cast<GLint>(testcase.value));
+    EXPECT_EQ(error::kNoError, ExecuteCmd(icmd));
+    EXPECT_EQ(GL_NO_ERROR, GetGLError());
+  }
+
+  // Cleanup.
+  EXPECT_CALL(*gl_, DeletePathsNV(kFirstCreatedServiceID, kPathCount))
+      .RetiresOnSaturation();
+
+  cmds::DeletePathsCHROMIUM delete_cmd;
+  delete_cmd.Init(kFirstClientID, kPathCount);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(delete_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+}
+
+TEST_P(GLES2DecoderTestWithCHROMIUMPathRendering,
+       PathParameterXCHROMIUMInvalidArgs) {
+  static GLuint kFirstClientID = client_path_id_ + 88;
+  static GLsizei kPathCount = 2;
+  static GLuint kFirstCreatedServiceID = 8000;
+
+  // Create a paths so that we do not modify client_path_id_
+  EXPECT_CALL(*gl_, GenPathsNV(kPathCount))
+      .WillOnce(Return(kFirstCreatedServiceID))
+      .RetiresOnSaturation();
+  cmds::GenPathsCHROMIUM gen_cmd;
+  gen_cmd.Init(kFirstClientID, kPathCount);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(gen_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  cmds::PathParameterfCHROMIUM fcmd;
+  cmds::PathParameteriCHROMIUM icmd;
+  const struct {
+    GLenum pname;
+    GLfloat value;
+    bool try_int_version;
+    GLint error;
+  } kTestcases[] = {
+        {GL_PATH_STROKE_WIDTH_CHROMIUM, -1.0f, true, GL_INVALID_VALUE},
+        {GL_PATH_MITER_LIMIT_CHROMIUM,
+         std::numeric_limits<float>::infinity(),
+         false,
+         GL_INVALID_VALUE},
+        {GL_PATH_MITER_LIMIT_CHROMIUM,
+         std::numeric_limits<float>::quiet_NaN(),
+         false,
+         GL_INVALID_VALUE},
+        {GL_PATH_INITIAL_END_CAP_CHROMIUM, 0x4, true, GL_INVALID_VALUE},
+        {GL_PATH_TERMINAL_END_CAP_CHROMIUM,
+         GL_MITER_REVERT_CHROMIUM,
+         true,
+         GL_INVALID_VALUE},
+        {GL_PATH_JOIN_STYLE_CHROMIUM, GL_FLAT_CHROMIUM, true, GL_INVALID_VALUE},
+        {GL_PATH_MODELVIEW_CHROMIUM, GL_FLAT_CHROMIUM, true, GL_INVALID_ENUM},
+    };
+
+  EXPECT_CALL(*gl_, PathParameterfNV(_, _, _)).Times(0);
+  EXPECT_CALL(*gl_, PathParameteriNV(_, _, _)).Times(0);
+
+  for (auto& testcase : kTestcases) {
+    fcmd.Init(kFirstClientID, testcase.pname, testcase.value);
+    EXPECT_EQ(error::kNoError, ExecuteCmd(fcmd));
+    EXPECT_EQ(testcase.error, GetGLError());
+    if (!testcase.try_int_version) {
+      continue;
+    }
+    icmd.Init(
+        kFirstClientID + 1, testcase.pname, static_cast<GLint>(testcase.value));
+    EXPECT_EQ(error::kNoError, ExecuteCmd(icmd));
+    EXPECT_EQ(testcase.error, GetGLError());
+  }
+
+  // Cleanup.
+  EXPECT_CALL(*gl_, DeletePathsNV(kFirstCreatedServiceID, kPathCount))
+      .RetiresOnSaturation();
+
+  cmds::DeletePathsCHROMIUM delete_cmd;
+  delete_cmd.Init(kFirstClientID, kPathCount);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(delete_cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+}
+
+TEST_P(GLES2DecoderTestWithCHROMIUMPathRendering, StencilFillPathCHROMIUM) {
+  SetupExpectationsForApplyingDefaultDirtyState();
+
+  cmds::StencilFillPathCHROMIUM cmd;
+  cmds::StencilThenCoverFillPathCHROMIUM tcmd;
+
+  static const GLenum kFillModes[] = {
+      GL_INVERT, GL_COUNT_UP_CHROMIUM, GL_COUNT_DOWN_CHROMIUM};
+  static const GLuint kMask = 0x7F;
+
+  for (auto& fill_mode : kFillModes) {
+    EXPECT_CALL(*gl_, StencilFillPathNV(kServicePathId, fill_mode, kMask))
+        .RetiresOnSaturation();
+    cmd.Init(client_path_id_, fill_mode, kMask);
+    EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+    EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+    EXPECT_CALL(*gl_,
+                StencilThenCoverFillPathNV(
+                    kServicePathId, fill_mode, kMask, GL_BOUNDING_BOX_NV))
+        .RetiresOnSaturation();
+    tcmd.Init(client_path_id_, fill_mode, kMask);
+    EXPECT_EQ(error::kNoError, ExecuteCmd(tcmd));
+    EXPECT_EQ(GL_NO_ERROR, GetGLError());
+  }
+
+  // Non-existent path: no error, no call.
+  cmd.Init(client_path_id_ - 1, GL_INVERT, 0x80);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  tcmd.Init(client_path_id_ - 1, GL_INVERT, 0x80);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(tcmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+}
+
+TEST_P(GLES2DecoderTestWithCHROMIUMPathRendering,
+       StencilFillPathCHROMIUMInvalidArgs) {
+  EXPECT_CALL(*gl_, StencilFillPathNV(_, _, _)).Times(0);
+  EXPECT_CALL(*gl_, StencilThenCoverFillPathNV(_, _, _, _)).Times(0);
+
+  cmds::StencilFillPathCHROMIUM cmd;
+  cmds::StencilThenCoverFillPathCHROMIUM tcmd;
+
+  cmd.Init(client_path_id_, GL_INVERT - 1, 0x80);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+  EXPECT_EQ(GL_INVALID_ENUM, GetGLError());
+
+  tcmd.Init(client_path_id_, GL_INVERT - 1, 0x80);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(tcmd));
+  EXPECT_EQ(GL_INVALID_ENUM, GetGLError());
+
+  // The /mask/+1 is not power of two -> invalid value.
+  cmd.Init(client_path_id_, GL_COUNT_UP_CHROMIUM, 0x80);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+  EXPECT_EQ(GL_INVALID_VALUE, GetGLError());
+
+  tcmd.Init(client_path_id_, GL_COUNT_UP_CHROMIUM, 0x80);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(tcmd));
+  EXPECT_EQ(GL_INVALID_VALUE, GetGLError());
+
+  cmd.Init(client_path_id_, GL_COUNT_DOWN_CHROMIUM, 5);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+  EXPECT_EQ(GL_INVALID_VALUE, GetGLError());
+
+  tcmd.Init(client_path_id_, GL_COUNT_DOWN_CHROMIUM, 5);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(tcmd));
+  EXPECT_EQ(GL_INVALID_VALUE, GetGLError());
+}
+
+TEST_P(GLES2DecoderTestWithCHROMIUMPathRendering, StencilStrokePathCHROMIUM) {
+  SetupExpectationsForApplyingDefaultDirtyState();
+
+  EXPECT_CALL(*gl_, StencilStrokePathNV(kServicePathId, 1, 0x80))
+      .RetiresOnSaturation();
+  EXPECT_CALL(
+      *gl_,
+      StencilThenCoverStrokePathNV(kServicePathId, 1, 0x80, GL_BOUNDING_BOX_NV))
+      .RetiresOnSaturation();
+
+  cmds::StencilStrokePathCHROMIUM cmd;
+  cmds::StencilThenCoverStrokePathCHROMIUM tcmd;
+
+  cmd.Init(client_path_id_, 1, 0x80);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  tcmd.Init(client_path_id_, 1, 0x80);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(tcmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  // Non-existent path: no error, no call.
+  cmd.Init(client_path_id_ - 1, 1, 0x80);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  tcmd.Init(client_path_id_ - 1, 1, 0x80);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(tcmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+}
+
+TEST_P(GLES2DecoderTestWithCHROMIUMPathRendering, CoverFillPathCHROMIUM) {
+  SetupExpectationsForApplyingDefaultDirtyState();
+
+  EXPECT_CALL(*gl_, CoverFillPathNV(kServicePathId, GL_BOUNDING_BOX_NV))
+      .RetiresOnSaturation();
+  cmds::CoverFillPathCHROMIUM cmd;
+  cmd.Init(client_path_id_);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  // Non-existent path: no error, no call.
+  cmd.Init(client_path_id_ - 1);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+}
+
+TEST_P(GLES2DecoderTestWithCHROMIUMPathRendering, CoverStrokePathCHROMIUM) {
+  SetupExpectationsForApplyingDefaultDirtyState();
+  EXPECT_CALL(*gl_, CoverStrokePathNV(kServicePathId, GL_BOUNDING_BOX_NV))
+      .RetiresOnSaturation();
+  cmds::CoverStrokePathCHROMIUM cmd;
+  cmd.Init(client_path_id_);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+
+  // Non-existent path: no error, no call.
+  cmd.Init(client_path_id_ - 1);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+}
+
 #include "gpu/command_buffer/service/gles2_cmd_decoder_unittest_extensions_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu