kc3-lang/angle/src/libANGLE/TransformFeedback_unittest.cpp

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• Hash : e8a93c6e
  Author :
  Date : 2018-01-04T18:02:24
  

  New transform feedback buffer binding rules
  
  Detects undefined behavior when a buffer is bound to a transform feedback
  binding point and a non transform feedback binding point at the same time.
  
  Also moves the transform feedback buffer generic binding point out of the
  transform feedback object and into the context's global state, to match
  driver behavior. This way binding a new transform feedback object does not
  affect GL_TRANSFORM_FEEDBACK_BUFFER_BINDING which is similar to how VAOs
  work with GL_ARRAY_BUFFER_BINDING.
  
  Bug: 696345
  Change-Id: If3b9306cde7cd2197a8ce35e10c3af9ee58da0b8
  Reviewed-on: https://chromium-review.googlesource.com/853130
  Commit-Queue: James Darpinian <jdarpinian@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

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• src/libANGLE/TransformFeedback_unittest.cpp

• //
  // Copyright (c) 2014 The ANGLE Project 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 "gmock/gmock.h"
  #include "gtest/gtest.h"
  #include "libANGLE/Buffer.h"
  #include "libANGLE/Caps.h"
  #include "libANGLE/TransformFeedback.h"
  #include "libANGLE/renderer/BufferImpl_mock.h"
  #include "libANGLE/renderer/TransformFeedbackImpl_mock.h"
  #include "tests/angle_unittests_utils.h"
  
  using ::testing::_;
  using ::testing::get;
  using ::testing::Return;
  using ::testing::SetArgumentPointee;
  
  namespace
  {
  
  ACTION(CreateMockTransformFeedbackImpl)
  {
      return new rx::MockTransformFeedbackImpl(arg0);
  }
  
  class TransformFeedbackTest : public testing::Test
  {
    protected:
      TransformFeedbackTest() : mImpl(nullptr), mFeedback(nullptr) {}
  
      void SetUp() override
      {
          EXPECT_CALL(mMockFactory, createTransformFeedback(_))
              .WillOnce(CreateMockTransformFeedbackImpl())
              .RetiresOnSaturation();
  
          // Set a reasonable number of tf attributes
          mCaps.maxTransformFeedbackSeparateAttributes = 8;
  
          mFeedback = new gl::TransformFeedback(&mMockFactory, 1, mCaps);
          mFeedback->addRef();
  
          mImpl = rx::GetImplAs<rx::MockTransformFeedbackImpl>(mFeedback);
          EXPECT_CALL(*mImpl, destructor());
      }
  
      void TearDown() override
      {
          if (mFeedback)
          {
              mFeedback->release(nullptr);
          }
  
          // Only needed because the mock is leaked if bugs are present,
          // which logs an error, but does not cause the test to fail.
          // Ordinarily mocks are verified when destroyed.
          testing::Mock::VerifyAndClear(mImpl);
      }
  
      rx::MockGLFactory mMockFactory;
      rx::MockTransformFeedbackImpl* mImpl;
      gl::TransformFeedback* mFeedback;
      gl::Caps mCaps;
  };
  
  TEST_F(TransformFeedbackTest, SideEffectsOfStartAndStop)
  {
      testing::InSequence seq;
  
      EXPECT_FALSE(mFeedback->isActive());
      EXPECT_CALL(*mImpl, begin(GL_TRIANGLES));
      mFeedback->begin(nullptr, GL_TRIANGLES, nullptr);
      EXPECT_TRUE(mFeedback->isActive());
      EXPECT_EQ(static_cast<GLenum>(GL_TRIANGLES), mFeedback->getPrimitiveMode());
      EXPECT_CALL(*mImpl, end());
      mFeedback->end(nullptr);
      EXPECT_FALSE(mFeedback->isActive());
  }
  
  TEST_F(TransformFeedbackTest, SideEffectsOfPauseAndResume)
  {
      testing::InSequence seq;
  
      EXPECT_FALSE(mFeedback->isActive());
      EXPECT_CALL(*mImpl, begin(GL_TRIANGLES));
      mFeedback->begin(nullptr, GL_TRIANGLES, nullptr);
      EXPECT_FALSE(mFeedback->isPaused());
      EXPECT_CALL(*mImpl, pause());
      mFeedback->pause();
      EXPECT_TRUE(mFeedback->isPaused());
      EXPECT_CALL(*mImpl, resume());
      mFeedback->resume();
      EXPECT_FALSE(mFeedback->isPaused());
      EXPECT_CALL(*mImpl, end());
      mFeedback->end(nullptr);
  }
  
  TEST_F(TransformFeedbackTest, BufferBinding)
  {
      rx::MockBufferImpl *bufferImpl = new rx::MockBufferImpl;
      EXPECT_CALL(*bufferImpl, destructor()).Times(1).RetiresOnSaturation();
  
      rx::MockGLFactory mockGLFactory;
      EXPECT_CALL(mockGLFactory, createBuffer(_))
          .Times(1)
          .WillOnce(Return(bufferImpl))
          .RetiresOnSaturation();
  
      gl::Buffer *buffer = new gl::Buffer(&mockGLFactory, 1);
  
      static const size_t bindIndex = 0;
  
      EXPECT_EQ(mFeedback->getIndexedBufferCount(), mCaps.maxTransformFeedbackSeparateAttributes);
  
      EXPECT_CALL(*mImpl, bindIndexedBuffer(_, _));
      mFeedback->bindIndexedBuffer(nullptr, bindIndex, buffer, 0, 1);
      for (size_t i = 0; i < mFeedback->getIndexedBufferCount(); i++)
      {
          if (i == bindIndex)
          {
              EXPECT_EQ(mFeedback->getIndexedBuffer(i).get(), buffer);
          }
          else
          {
              EXPECT_EQ(mFeedback->getIndexedBuffer(i).get(), nullptr);
          }
      }
  
      // force-release the feedback object to ensure the buffer is released.
      const size_t releaseCount = mFeedback->getRefCount();
      for (size_t count = 0; count < releaseCount; ++count)
      {
          mFeedback->release(nullptr);
      }
  
      mFeedback = nullptr;
  
      testing::Mock::VerifyAndClear(bufferImpl);
  }
  
  }  // anonymous namespace
  

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