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

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• Hash : f184cb61
  Author :
  Date : 2020-09-06T22:29:29
  

  Add perf test for multisampled render to texture
  
  Bug: angleproject:4881
  Change-Id: I4733e2868a3e056ec61463fec88d17aaa564234f
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2394955
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  

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• src/tests/perf_tests/ClearPerf.cpp

• //
  // Copyright 2019 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.
  //
  // ClearPerf:
  //   Performance test for clearing framebuffers.
  //
  
  #include "ANGLEPerfTest.h"
  
  #include <iostream>
  #include <random>
  #include <sstream>
  
  #include "test_utils/gl_raii.h"
  #include "util/shader_utils.h"
  
  using namespace angle;
  
  namespace
  {
  constexpr unsigned int kIterationsPerStep = 256;
  
  struct ClearParams final : public RenderTestParams
  {
      ClearParams()
      {
          iterationsPerStep = kIterationsPerStep;
          trackGpuTime      = true;
  
          fboSize     = 2048;
          textureSize = 16;
      }
  
      std::string story() const override;
  
      GLsizei fboSize;
      GLsizei textureSize;
  };
  
  std::ostream &operator<<(std::ostream &os, const ClearParams &params)
  {
      os << params.backendAndStory().substr(1);
      return os;
  }
  
  std::string ClearParams::story() const
  {
      std::stringstream strstr;
  
      strstr << RenderTestParams::story();
  
      return strstr.str();
  }
  
  class ClearBenchmark : public ANGLERenderTest, public ::testing::WithParamInterface<ClearParams>
  {
    public:
      ClearBenchmark();
  
      void initializeBenchmark() override;
      void destroyBenchmark() override;
      void drawBenchmark() override;
  
    private:
      void initShaders();
  
      std::vector<GLuint> mTextures;
  
      GLuint mProgram;
  };
  
  ClearBenchmark::ClearBenchmark() : ANGLERenderTest("Clear", GetParam()), mProgram(0u)
  {
      // Crashes on nvidia+d3d11. http://crbug.com/945415
      if (GetParam().getRenderer() == EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE)
      {
          mSkipTest = true;
      }
  }
  
  void ClearBenchmark::initializeBenchmark()
  {
      initShaders();
      glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
      glViewport(0, 0, getWindow()->getWidth(), getWindow()->getHeight());
  
      ASSERT_GL_NO_ERROR();
  }
  
  void ClearBenchmark::initShaders()
  {
      constexpr char kVS[] = R"(void main()
  {
      gl_Position = vec4(0, 0, 0, 1);
  })";
  
      constexpr char kFS[] = R"(precision mediump float;
  void main()
  {
      gl_FragColor = vec4(0);
  })";
  
      mProgram = CompileProgram(kVS, kFS);
      ASSERT_NE(0u, mProgram);
  
      glUseProgram(mProgram);
  
      glDisable(GL_DEPTH_TEST);
  
      ASSERT_GL_NO_ERROR();
  }
  
  void ClearBenchmark::destroyBenchmark()
  {
      glDeleteProgram(mProgram);
  }
  
  void ClearBenchmark::drawBenchmark()
  {
      const auto &params = GetParam();
  
      std::vector<float> textureData(params.textureSize * params.textureSize * 4, 0.5);
  
      GLRenderbuffer colorRbo;
      glBindRenderbuffer(GL_RENDERBUFFER, colorRbo);
      glRenderbufferStorage(GL_RENDERBUFFER, GL_RGBA8, params.fboSize, params.fboSize);
  
      GLRenderbuffer depthRbo;
      glBindRenderbuffer(GL_RENDERBUFFER, depthRbo);
      glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, params.fboSize, params.fboSize);
  
      GLFramebuffer fbo;
      glBindFramebuffer(GL_FRAMEBUFFER, fbo);
      glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, colorRbo);
      glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, depthRbo);
  
      startGpuTimer();
      for (size_t it = 0; it < params.iterationsPerStep; ++it)
      {
          glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
          glDrawArrays(GL_TRIANGLES, 0, 3);
      }
      stopGpuTimer();
  
      ASSERT_GL_NO_ERROR();
  }
  
  ClearParams D3D11Params()
  {
      ClearParams params;
      params.eglParameters = egl_platform::D3D11();
      return params;
  }
  
  ClearParams OpenGLOrGLESParams()
  {
      ClearParams params;
      params.eglParameters = egl_platform::OPENGL_OR_GLES();
      return params;
  }
  
  ClearParams VulkanParams()
  {
      ClearParams params;
      params.eglParameters = egl_platform::VULKAN();
      return params;
  }
  
  }  // anonymous namespace
  
  TEST_P(ClearBenchmark, Run)
  {
      run();
  }
  
  ANGLE_INSTANTIATE_TEST(ClearBenchmark, D3D11Params(), OpenGLOrGLESParams(), VulkanParams());
  

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