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

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• Author : Qin Jiajia
  Date : 2017-10-13 13:19:07
  Hash : 7478ce7f
  Message : D3D11: Minor Optimization to DrawCallNeedsTranslation Remove IsStreamingIndexData from DrawCallNeedsTranslation since IsStreamingIndexData is only needed for drawElementsIndirect for fast path. This change gives about a 4% improvement on the drawElements benchmark for the D3D11 backend with the null driver. BUG=angleproject:1155 Change-Id: Ife2a9748f6b6fe9bc1f3a67c96672ab941a89d44 Reviewed-on: https://chromium-review.googlesource.com/717946 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Geoff Lang <geofflang@chromium.org>

• src/tests/perf_tests/DrawElementsPerf.cpp

• //
  // Copyright (c) 2017 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.
  //
  // DrawElementsPerf:
  //   Performance tests for ANGLE DrawElements call overhead.
  //
  
  #include <sstream>
  
  #include "ANGLEPerfTest.h"
  #include "DrawCallPerfParams.h"
  #include "test_utils/draw_call_perf_utils.h"
  
  namespace
  {
  
  GLuint CreateElementArrayBuffer(size_t count, GLenum type, GLenum usage)
  {
      GLuint buffer = 0u;
      glGenBuffers(1, &buffer);
      glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffer);
      glBufferData(GL_ELEMENT_ARRAY_BUFFER, count * sizeof(type), nullptr, usage);
  
      return buffer;
  }
  
  struct DrawElementsPerfParams final : public DrawCallPerfParams
  {
      // Common default options
      DrawElementsPerfParams()
      {
          runTimeSeconds = 5.0;
          numTris        = 2;
      }
  
      std::string suffix() const override
      {
          std::stringstream strstr;
  
          strstr << DrawCallPerfParams::suffix();
  
          if (indexBufferChanged)
          {
              strstr << "_index_buffer_changed";
          }
  
          return strstr.str();
      }
  
      GLenum type             = GL_UNSIGNED_INT;
      bool indexBufferChanged = false;
  };
  
  std::ostream &operator<<(std::ostream &os, const DrawElementsPerfParams &params)
  {
      os << params.suffix().substr(1);
      return os;
  }
  
  class DrawElementsPerfBenchmark : public ANGLERenderTest,
                                    public ::testing::WithParamInterface<DrawElementsPerfParams>
  {
    public:
      DrawElementsPerfBenchmark();
  
      void initializeBenchmark() override;
      void destroyBenchmark() override;
      void drawBenchmark() override;
  
    private:
      GLuint mProgram     = 0;
      GLuint mBuffer      = 0;
      GLuint mIndexBuffer = 0;
      GLuint mFBO         = 0;
      GLuint mTexture     = 0;
      int mCount          = 3 * GetParam().numTris;
      std::vector<GLuint> mIndexData;
  };
  
  DrawElementsPerfBenchmark::DrawElementsPerfBenchmark()
      : ANGLERenderTest("DrawElementsPerf", GetParam())
  {
      mRunTimeSeconds = GetParam().runTimeSeconds;
  }
  
  void DrawElementsPerfBenchmark::initializeBenchmark()
  {
      const auto &params = GetParam();
  
      ASSERT_LT(0u, params.iterations);
  
      mProgram = SetupSimpleDrawProgram();
      ASSERT_NE(0u, mProgram);
  
      glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
  
      mBuffer      = Create2DTriangleBuffer(params.numTris, GL_STATIC_DRAW);
      mIndexBuffer = CreateElementArrayBuffer(mCount, params.type, GL_STATIC_DRAW);
  
      for (int i = 0; i < mCount; i++)
      {
          mIndexData.push_back(rand() % mCount);
      }
      glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mIndexBuffer);
      glBufferSubData(GL_ELEMENT_ARRAY_BUFFER, 0, sizeof(params.type) * mIndexData.size(),
                      mIndexData.data());
  
      glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, 0);
      glEnableVertexAttribArray(0);
  
      // Set the viewport
      glViewport(0, 0, getWindow()->getWidth(), getWindow()->getHeight());
  
      if (params.useFBO)
      {
          CreateColorFBO(getWindow()->getWidth(), getWindow()->getHeight(), &mTexture, &mFBO);
      }
  
      ASSERT_GL_NO_ERROR();
  }
  
  void DrawElementsPerfBenchmark::destroyBenchmark()
  {
      glDeleteProgram(mProgram);
      glDeleteBuffers(1, &mBuffer);
      glDeleteBuffers(1, &mIndexBuffer);
      glDeleteTextures(1, &mTexture);
      glDeleteFramebuffers(1, &mFBO);
  }
  
  void DrawElementsPerfBenchmark::drawBenchmark()
  {
      // This workaround fixes a huge queue of graphics commands accumulating on the GL
      // back-end. The GL back-end doesn't have a proper NULL device at the moment.
      // TODO(jmadill): Remove this when/if we ever get a proper OpenGL NULL device.
      const auto &eglParams = GetParam().eglParameters;
      if (eglParams.deviceType != EGL_PLATFORM_ANGLE_DEVICE_TYPE_NULL_ANGLE ||
          (eglParams.renderer != EGL_PLATFORM_ANGLE_TYPE_OPENGL_ANGLE &&
           eglParams.renderer != EGL_PLATFORM_ANGLE_TYPE_OPENGLES_ANGLE))
      {
          glClear(GL_COLOR_BUFFER_BIT);
      }
  
      const auto &params = GetParam();
  
      for (unsigned int it = 0; it < params.iterations; it++)
      {
          if (params.indexBufferChanged)
          {
              glBufferSubData(GL_ELEMENT_ARRAY_BUFFER, 0, sizeof(params.type) * mIndexData.size(),
                              mIndexData.data());
          }
          glDrawElements(GL_TRIANGLES, static_cast<GLsizei>(mCount), params.type, 0);
      }
  
      ASSERT_GL_NO_ERROR();
  }
  
  DrawElementsPerfParams DrawElementsPerfD3D11Params(bool indexBufferChanged, bool useNullDevice)
  {
      DrawElementsPerfParams params;
      params.eglParameters =
          useNullDevice ? angle::egl_platform::D3D11_NULL() : angle::egl_platform::D3D11();
      params.indexBufferChanged = indexBufferChanged;
      return params;
  }
  
  DrawElementsPerfParams DrawElementsPerfD3D9Params(bool indexBufferChanged)
  {
      DrawElementsPerfParams params;
      params.eglParameters      = angle::egl_platform::D3D9();
      params.indexBufferChanged = indexBufferChanged;
      return params;
  }
  
  DrawElementsPerfParams DrawElementsPerfOpenGLParams(bool indexBufferChanged)
  {
      DrawElementsPerfParams params;
      params.eglParameters      = angle::egl_platform::OPENGL();
      params.indexBufferChanged = indexBufferChanged;
      return params;
  }
  
  TEST_P(DrawElementsPerfBenchmark, Run)
  {
      run();
  }
  
  ANGLE_INSTANTIATE_TEST(DrawElementsPerfBenchmark,
                         DrawElementsPerfD3D9Params(false),
                         DrawElementsPerfD3D9Params(true),
                         DrawElementsPerfD3D11Params(false, true),
                         DrawElementsPerfD3D11Params(true, true),
                         DrawElementsPerfD3D11Params(false, false),
                         DrawElementsPerfD3D11Params(true, false),
                         DrawElementsPerfOpenGLParams(false),
                         DrawElementsPerfOpenGLParams(true));
  
  }  // namespace