kc3-lang/angle/src/common/bitset_utils_unittest.cpp

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• Hash : 0cc11c68
  Author :
  Date : 2018-10-12T18:07:18
  

  StateManagerGL: Remove setGenericShaderState.
  
  We can mutate the BitSetIterator as it clears dirty bits. This removes
  the risk of doing a double state update. Improves the proformance of
  the GL back-end state update.
  
  Also do an early-out before calling syncDrawArraysState.
  
  Bug: angleproject:2763
  Change-Id: Idd25bdd67a6aceff05529a533260b661b07c2928
  Reviewed-on: https://chromium-review.googlesource.com/c/1262740
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

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• src/common/bitset_utils_unittest.cpp

• //
  // Copyright 2015 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.
  //
  // bitset_utils_unittest:
  //   Tests bitset helpers and custom classes.
  //
  
  #include <gtest/gtest.h>
  
  #include "common/bitset_utils.h"
  
  using namespace angle;
  
  namespace
  {
  class BitSetIteratorTest : public testing::Test
  {
    protected:
      BitSet<40> mStateBits;
  };
  
  // Simple iterator test.
  TEST_F(BitSetIteratorTest, Iterator)
  {
      std::set<size_t> originalValues;
      originalValues.insert(2);
      originalValues.insert(6);
      originalValues.insert(8);
      originalValues.insert(35);
  
      for (size_t value : originalValues)
      {
          mStateBits.set(value);
      }
  
      std::set<size_t> readValues;
      for (size_t bit : mStateBits)
      {
          EXPECT_EQ(1u, originalValues.count(bit));
          EXPECT_EQ(0u, readValues.count(bit));
          readValues.insert(bit);
      }
  
      EXPECT_EQ(originalValues.size(), readValues.size());
  }
  
  // Test an empty iterator.
  TEST_F(BitSetIteratorTest, EmptySet)
  {
      // We don't use the FAIL gtest macro here since it returns immediately,
      // causing an unreachable code warning in MSVS
      bool sawBit = false;
      for (size_t bit : mStateBits)
      {
          sawBit = true;
          ANGLE_UNUSED_VARIABLE(bit);
      }
      EXPECT_FALSE(sawBit);
  }
  
  // Test iterating a result of combining two bitsets.
  TEST_F(BitSetIteratorTest, NonLValueBitset)
  {
      BitSet<40> otherBits;
  
      mStateBits.set(1);
      mStateBits.set(2);
      mStateBits.set(3);
      mStateBits.set(4);
  
      otherBits.set(0);
      otherBits.set(1);
      otherBits.set(3);
      otherBits.set(5);
  
      std::set<size_t> seenBits;
  
      angle::BitSet<40> maskedBits = (mStateBits & otherBits);
      for (size_t bit : maskedBits)
      {
          EXPECT_EQ(0u, seenBits.count(bit));
          seenBits.insert(bit);
          EXPECT_TRUE(mStateBits[bit]);
          EXPECT_TRUE(otherBits[bit]);
      }
  
      EXPECT_EQ((mStateBits & otherBits).count(), seenBits.size());
  }
  
  // Test bit assignments.
  TEST_F(BitSetIteratorTest, BitAssignment)
  {
      std::set<size_t> originalValues;
      originalValues.insert(2);
      originalValues.insert(6);
      originalValues.insert(8);
      originalValues.insert(35);
  
      for (size_t value : originalValues)
      {
          (mStateBits[value] = false) = true;
      }
  
      for (size_t value : originalValues)
      {
          EXPECT_TRUE(mStateBits.test(value));
      }
  }
  
  // Tests adding bits to the iterator during iteration.
  TEST_F(BitSetIteratorTest, SetLaterBit)
  {
      std::set<size_t> expectedValues = {1, 3, 5, 7, 9};
      mStateBits.set(1);
  
      std::set<size_t> actualValues;
  
      for (auto iter = mStateBits.begin(), end = mStateBits.end(); iter != end; ++iter)
      {
          if (*iter == 1)
          {
              iter.setLaterBit(3);
              iter.setLaterBit(5);
              iter.setLaterBit(7);
              iter.setLaterBit(9);
          }
  
          actualValues.insert(*iter);
      }
  
      EXPECT_EQ(expectedValues, actualValues);
  }
  
  // Tests removing bits from the iterator during iteration.
  TEST_F(BitSetIteratorTest, ResetLaterBit)
  {
      std::set<size_t> expectedValues = {1, 3, 5, 7, 9};
  
      for (size_t index = 1; index <= 9; ++index)
          mStateBits.set(index);
  
      std::set<size_t> actualValues;
  
      for (auto iter = mStateBits.begin(), end = mStateBits.end(); iter != end; ++iter)
      {
          if (*iter == 1)
          {
              iter.resetLaterBit(2);
              iter.resetLaterBit(4);
              iter.resetLaterBit(6);
              iter.resetLaterBit(8);
          }
  
          actualValues.insert(*iter);
      }
  
      EXPECT_EQ(expectedValues, actualValues);
  }
  }  // anonymous namespace
  

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