kc3-lang/angle/src/tests/perf_tests/IndexConversionPerf.cpp

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• Author : Jamie Madill
  Date : 2017-04-26 13:45:37
  Hash : 231c7f56
  Message : Apply clang-format to many files. This cleans up the formatting in many places. BUG=None Change-Id: I6c6652ebc042f1f0ffecced53582d09d66b4f384 Reviewed-on: https://chromium-review.googlesource.com/487884 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>

• src/tests/perf_tests/IndexConversionPerf.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.
  //
  // IndexConversionPerf:
  //   Performance tests for ANGLE index conversion in D3D11.
  //
  
  #include <sstream>
  
  #include "ANGLEPerfTest.h"
  #include "tests/test_utils/draw_call_perf_utils.h"
  
  using namespace angle;
  
  namespace
  {
  
  struct IndexConversionPerfParams final : public RenderTestParams
  {
      std::string suffix() const override
      {
          std::stringstream strstr;
  
          if (indexRangeOffset > 0)
          {
              strstr << "_index_range";
          }
  
          strstr << RenderTestParams::suffix();
  
          return strstr.str();
      }
  
      unsigned int iterations;
      unsigned int numIndexTris;
  
      // A second test, which covers using index ranges with an offset.
      unsigned int indexRangeOffset;
  };
  
  // Provide a custom gtest parameter name function for IndexConversionPerfParams.
  std::ostream &operator<<(std::ostream &stream, const IndexConversionPerfParams &param)
  {
      stream << param.suffix().substr(1);
      return stream;
  }
  
  class IndexConversionPerfTest : public ANGLERenderTest,
                                  public ::testing::WithParamInterface<IndexConversionPerfParams>
  {
    public:
      IndexConversionPerfTest();
  
      void initializeBenchmark() override;
      void destroyBenchmark() override;
      void drawBenchmark() override;
  
    private:
      void updateBufferData();
      void drawConversion();
      void drawIndexRange();
  
      GLuint mProgram;
      GLuint mVertexBuffer;
      GLuint mIndexBuffer;
      std::vector<GLushort> mIndexData;
  };
  
  IndexConversionPerfTest::IndexConversionPerfTest()
      : ANGLERenderTest("IndexConversionPerfTest", GetParam()),
        mProgram(0),
        mVertexBuffer(0),
        mIndexBuffer(0)
  {
      mRunTimeSeconds = 3.0;
  }
  
  void IndexConversionPerfTest::initializeBenchmark()
  {
      const auto &params = GetParam();
  
      ASSERT_LT(0u, params.iterations);
      ASSERT_LT(0u, params.numIndexTris);
  
      mProgram = SetupSimpleScaleAndOffsetProgram();
      ASSERT_NE(0u, mProgram);
  
      glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
  
      // Initialize the vertex data
      size_t numTris = std::numeric_limits<GLushort>::max() / 3 + 1;
      mVertexBuffer  = Create2DTriangleBuffer(numTris, GL_STATIC_DRAW);
  
      glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, 0);
      glEnableVertexAttribArray(0);
  
      // Initialize the index buffer
      for (unsigned int triIndex = 0; triIndex < params.numIndexTris; ++triIndex)
      {
          // Handle two different types of tests, one with index conversion triggered by a -1 index.
          if (params.indexRangeOffset == 0)
          {
              mIndexData.push_back(std::numeric_limits<GLushort>::max());
          }
          else
          {
              mIndexData.push_back(0);
          }
  
          mIndexData.push_back(1);
          mIndexData.push_back(2);
      }
  
      glGenBuffers(1, &mIndexBuffer);
      glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mIndexBuffer);
      updateBufferData();
  
      // Set the viewport
      glViewport(0, 0, getWindow()->getWidth(), getWindow()->getHeight());
  
      ASSERT_GL_NO_ERROR();
  }
  
  void IndexConversionPerfTest::updateBufferData()
  {
      glBufferData(GL_ELEMENT_ARRAY_BUFFER, mIndexData.size() * sizeof(mIndexData[0]), &mIndexData[0],
                   GL_STATIC_DRAW);
  }
  
  void IndexConversionPerfTest::destroyBenchmark()
  {
      glDeleteProgram(mProgram);
      glDeleteBuffers(1, &mVertexBuffer);
      glDeleteBuffers(1, &mIndexBuffer);
  }
  
  void IndexConversionPerfTest::drawBenchmark()
  {
      const auto &params = GetParam();
  
      if (params.indexRangeOffset == 0)
      {
          drawConversion();
      }
      else
      {
          drawIndexRange();
      }
  }
  
  void IndexConversionPerfTest::drawConversion()
  {
      const auto &params = GetParam();
  
      // Trigger an update to ensure we convert once a frame
      updateBufferData();
  
      for (unsigned int it = 0; it < params.iterations; it++)
      {
          glDrawElements(GL_TRIANGLES, static_cast<GLsizei>(params.numIndexTris * 3 - 1),
                         GL_UNSIGNED_SHORT, reinterpret_cast<void *>(0));
      }
  
      ASSERT_GL_NO_ERROR();
  }
  
  void IndexConversionPerfTest::drawIndexRange()
  {
      const auto &params = GetParam();
  
      unsigned int indexCount = 3;
      size_t offset           = static_cast<size_t>(indexCount * getNumStepsPerformed());
  
      offset %= (params.numIndexTris * 3);
  
      // This test increments an offset each step. Drawing repeatedly may cause the system memory
      // to release. Then, using a fresh offset will require index range validation, which pages
      // it back in. The performance should be good even if the data is was used quite a bit.
      for (unsigned int it = 0; it < params.iterations; it++)
      {
          glDrawElements(GL_TRIANGLES, static_cast<GLsizei>(indexCount), GL_UNSIGNED_SHORT,
                         reinterpret_cast<void *>(offset));
      }
  
      ASSERT_GL_NO_ERROR();
  }
  
  IndexConversionPerfParams IndexConversionPerfD3D11Params()
  {
      IndexConversionPerfParams params;
      params.eglParameters    = egl_platform::D3D11_NULL();
      params.majorVersion     = 2;
      params.minorVersion     = 0;
      params.windowWidth      = 256;
      params.windowHeight     = 256;
      params.iterations       = 225;
      params.numIndexTris     = 3000;
      params.indexRangeOffset = 0;
      return params;
  }
  
  IndexConversionPerfParams IndexRangeOffsetPerfD3D11Params()
  {
      IndexConversionPerfParams params;
      params.eglParameters    = egl_platform::D3D11_NULL();
      params.majorVersion     = 2;
      params.minorVersion     = 0;
      params.windowWidth      = 256;
      params.windowHeight     = 256;
      params.iterations       = 16;
      params.numIndexTris     = 50000;
      params.indexRangeOffset = 64;
      return params;
  }
  
  TEST_P(IndexConversionPerfTest, Run)
  {
      run();
  }
  
  ANGLE_INSTANTIATE_TEST(IndexConversionPerfTest,
                         IndexConversionPerfD3D11Params(),
                         IndexRangeOffsetPerfD3D11Params());
  
  }  // namespace