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

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• Hash : 02acc5ee
  Author :
  Date : 2021-03-18T16:08:59
  

  Vulkan: More cleanups to perf counters.
  
  This refactors the pipeline type in the ContextVk class to also use
  a packed enum map. It also expands the object perf counters to store
  both a specific and cumulative version for use in different cases.
  
  Bug: angleproject:5736
  Change-Id: I6ff78e38065eb577f2b95b1d9c4f9cc31d7f325f
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2774184
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Tim Van Patten <timvp@google.com>
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  

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• src/tests/perf_tests/DrawCallPerf.cpp

• //
  // Copyright 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.
  //
  // DrawCallPerf:
  //   Performance tests for ANGLE draw call overhead.
  //
  
  #include "ANGLEPerfTest.h"
  #include "DrawCallPerfParams.h"
  #include "common/PackedEnums.h"
  #include "test_utils/draw_call_perf_utils.h"
  #include "util/shader_utils.h"
  
  namespace
  {
  enum class StateChange
  {
      NoChange,
      VertexAttrib,
      VertexBuffer,
      ManyVertexBuffers,
      Texture,
      Program,
      VertexBufferCycle,
      Scissor,
      InvalidEnum,
      EnumCount = InvalidEnum,
  };
  
  constexpr size_t kCycleVBOPoolSize = 200;
  
  struct DrawArraysPerfParams : public DrawCallPerfParams
  {
      DrawArraysPerfParams() = default;
      DrawArraysPerfParams(const DrawCallPerfParams &base) : DrawCallPerfParams(base) {}
  
      std::string story() const override;
  
      StateChange stateChange = StateChange::NoChange;
  };
  
  std::string DrawArraysPerfParams::story() const
  {
      std::stringstream strstr;
  
      strstr << DrawCallPerfParams::story();
  
      switch (stateChange)
      {
          case StateChange::VertexAttrib:
              strstr << "_attrib_change";
              break;
          case StateChange::VertexBuffer:
              strstr << "_vbo_change";
              break;
          case StateChange::ManyVertexBuffers:
              strstr << "_manyvbos_change";
              break;
          case StateChange::Texture:
              strstr << "_tex_change";
              break;
          case StateChange::Program:
              strstr << "_prog_change";
              break;
          case StateChange::VertexBufferCycle:
              strstr << "_vbo_cycle";
              break;
          case StateChange::Scissor:
              strstr << "_scissor_change";
              break;
          default:
              break;
      }
  
      return strstr.str();
  }
  
  std::ostream &operator<<(std::ostream &os, const DrawArraysPerfParams &params)
  {
      os << params.backendAndStory().substr(1);
      return os;
  }
  
  GLuint CreateSimpleTexture2D()
  {
      // Use tightly packed data
      glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
  
      // Generate a texture object
      GLuint texture;
      glGenTextures(1, &texture);
  
      // Bind the texture object
      glBindTexture(GL_TEXTURE_2D, texture);
  
      // Load the texture: 2x2 Image, 3 bytes per pixel (R, G, B)
      constexpr size_t width             = 2;
      constexpr size_t height            = 2;
      GLubyte pixels[width * height * 3] = {
          255, 0,   0,    // Red
          0,   255, 0,    // Green
          0,   0,   255,  // Blue
          255, 255, 0,    // Yellow
      };
      glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, pixels);
  
      // Set the filtering mode
      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
  
      return texture;
  }
  
  class DrawCallPerfBenchmark : public ANGLERenderTest,
                                public ::testing::WithParamInterface<DrawArraysPerfParams>
  {
    public:
      DrawCallPerfBenchmark();
  
      void initializeBenchmark() override;
      void destroyBenchmark() override;
      void drawBenchmark() override;
  
    private:
      GLuint mProgram1   = 0;
      GLuint mProgram2   = 0;
      GLuint mBuffer1    = 0;
      GLuint mBuffer2    = 0;
      GLuint mFBO        = 0;
      GLuint mFBOTexture = 0;
      GLuint mTexture1   = 0;
      GLuint mTexture2   = 0;
      int mNumTris       = GetParam().numTris;
      std::vector<GLuint> mVBOPool;
      size_t mCurrentVBO = 0;
  };
  
  DrawCallPerfBenchmark::DrawCallPerfBenchmark() : ANGLERenderTest("DrawCallPerf", GetParam()) {}
  
  void DrawCallPerfBenchmark::initializeBenchmark()
  {
      const auto &params = GetParam();
  
      if (params.stateChange == StateChange::Texture)
      {
          mProgram1 = SetupSimpleTextureProgram();
      }
      if (params.stateChange == StateChange::Program)
      {
          mProgram1 = SetupSimpleTextureProgram();
          mProgram2 = SetupDoubleTextureProgram();
  
          ASSERT_NE(0u, mProgram2);
      }
      else if (params.stateChange == StateChange::ManyVertexBuffers)
      {
          constexpr char kVS[] = R"(attribute vec2 vPosition;
  attribute vec2 v0;
  attribute vec2 v1;
  attribute vec2 v2;
  attribute vec2 v3;
  const float scale = 0.5;
  const float offset = -0.5;
  
  varying vec2 v;
  
  void main()
  {
      gl_Position = vec4(vPosition * vec2(scale) + vec2(offset), 0, 1);
      v = (v0 + v1 + v2 + v3) * 0.25;
  })";
  
          constexpr char kFS[] = R"(precision mediump float;
  varying vec2 v;
  void main()
  {
      gl_FragColor = vec4(v, 0, 1);
  })";
  
          mProgram1 = CompileProgram(kVS, kFS);
          glBindAttribLocation(mProgram1, 1, "v0");
          glBindAttribLocation(mProgram1, 2, "v1");
          glBindAttribLocation(mProgram1, 3, "v2");
          glBindAttribLocation(mProgram1, 4, "v3");
          glEnableVertexAttribArray(1);
          glEnableVertexAttribArray(2);
          glEnableVertexAttribArray(3);
          glEnableVertexAttribArray(4);
      }
      else if (params.stateChange == StateChange::VertexBufferCycle)
      {
          mProgram1 = SetupSimpleDrawProgram();
  
          for (size_t bufferIndex = 0; bufferIndex < kCycleVBOPoolSize; ++bufferIndex)
          {
              GLuint buffer = Create2DTriangleBuffer(mNumTris, GL_STATIC_DRAW);
              mVBOPool.push_back(buffer);
          }
      }
      else
      {
          mProgram1 = SetupSimpleDrawProgram();
      }
  
      ASSERT_NE(0u, mProgram1);
  
      // Re-link program to ensure the attrib bindings are used.
      glBindAttribLocation(mProgram1, 0, "vPosition");
      glLinkProgram(mProgram1);
      glUseProgram(mProgram1);
  
      if (mProgram2)
      {
          glBindAttribLocation(mProgram2, 0, "vPosition");
          glLinkProgram(mProgram2);
      }
  
      glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
  
      mBuffer1 = Create2DTriangleBuffer(mNumTris, GL_STATIC_DRAW);
      mBuffer2 = Create2DTriangleBuffer(mNumTris, GL_STATIC_DRAW);
  
      glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, 0);
      glEnableVertexAttribArray(0);
  
      // Set the viewport
      glViewport(0, 0, getWindow()->getWidth(), getWindow()->getHeight());
  
      if (params.surfaceType == SurfaceType::Offscreen)
      {
          CreateColorFBO(getWindow()->getWidth(), getWindow()->getHeight(), &mFBOTexture, &mFBO);
      }
  
      mTexture1 = CreateSimpleTexture2D();
      mTexture2 = CreateSimpleTexture2D();
  
      if (params.stateChange == StateChange::Program)
      {
          // Bind the textures as appropriate, they are not modified during the test.
          GLint program1Tex1Loc = glGetUniformLocation(mProgram1, "tex");
          GLint program2Tex1Loc = glGetUniformLocation(mProgram2, "tex1");
          GLint program2Tex2Loc = glGetUniformLocation(mProgram2, "tex2");
  
          glUseProgram(mProgram1);
          glUniform1i(program1Tex1Loc, 0);
  
          glUseProgram(mProgram2);
          glUniform1i(program2Tex1Loc, 0);
          glUniform1i(program2Tex2Loc, 1);
  
          glActiveTexture(GL_TEXTURE0);
          glBindTexture(GL_TEXTURE_2D, mTexture1);
  
          glActiveTexture(GL_TEXTURE1);
          glBindTexture(GL_TEXTURE_2D, mTexture2);
      }
  
      ASSERT_GL_NO_ERROR();
  }
  
  void DrawCallPerfBenchmark::destroyBenchmark()
  {
      glDeleteProgram(mProgram1);
      glDeleteProgram(mProgram2);
      glDeleteBuffers(1, &mBuffer1);
      glDeleteBuffers(1, &mBuffer2);
      glDeleteTextures(1, &mFBOTexture);
      glDeleteTextures(1, &mTexture1);
      glDeleteTextures(1, &mTexture2);
      glDeleteFramebuffers(1, &mFBO);
  
      if (!mVBOPool.empty())
      {
          glDeleteBuffers(mVBOPool.size(), mVBOPool.data());
      }
  }
  
  void ClearThenDraw(unsigned int iterations, GLsizei numElements)
  {
      glClear(GL_COLOR_BUFFER_BIT);
  
      for (unsigned int it = 0; it < iterations; it++)
      {
          glDrawArrays(GL_TRIANGLES, 0, numElements);
      }
  }
  
  void JustDraw(unsigned int iterations, GLsizei numElements)
  {
      for (unsigned int it = 0; it < iterations; it++)
      {
          glDrawArrays(GL_TRIANGLES, 0, numElements);
      }
  }
  
  template <int kArrayBufferCount>
  void ChangeVertexAttribThenDraw(unsigned int iterations, GLsizei numElements, GLuint buffer)
  {
      glBindBuffer(GL_ARRAY_BUFFER, buffer);
      for (unsigned int it = 0; it < iterations; it++)
      {
          for (int arrayIndex = 0; arrayIndex < kArrayBufferCount; ++arrayIndex)
          {
              glVertexAttribPointer(arrayIndex, 2, GL_FLOAT, GL_FALSE, 0, 0);
          }
          glDrawArrays(GL_TRIANGLES, 0, numElements);
  
          for (int arrayIndex = 0; arrayIndex < kArrayBufferCount; ++arrayIndex)
          {
              glVertexAttribPointer(arrayIndex, 4, GL_UNSIGNED_BYTE, GL_TRUE, 0, 0);
          }
          glDrawArrays(GL_TRIANGLES, 0, numElements);
      }
  }
  template <int kArrayBufferCount>
  void ChangeArrayBuffersThenDraw(unsigned int iterations,
                                  GLsizei numElements,
                                  GLuint buffer1,
                                  GLuint buffer2)
  {
      for (unsigned int it = 0; it < iterations; it++)
      {
          glBindBuffer(GL_ARRAY_BUFFER, buffer1);
          for (int arrayIndex = 0; arrayIndex < kArrayBufferCount; ++arrayIndex)
          {
              glVertexAttribPointer(arrayIndex, 2, GL_FLOAT, GL_FALSE, 0, 0);
          }
          glDrawArrays(GL_TRIANGLES, 0, numElements);
  
          glBindBuffer(GL_ARRAY_BUFFER, buffer2);
          for (int arrayIndex = 0; arrayIndex < kArrayBufferCount; ++arrayIndex)
          {
              glVertexAttribPointer(arrayIndex, 2, GL_FLOAT, GL_FALSE, 0, 0);
          }
          glDrawArrays(GL_TRIANGLES, 0, numElements);
      }
  }
  
  void ChangeTextureThenDraw(unsigned int iterations,
                             GLsizei numElements,
                             GLuint texture1,
                             GLuint texture2)
  {
      for (unsigned int it = 0; it < iterations; it++)
      {
          glBindTexture(GL_TEXTURE_2D, texture1);
          glDrawArrays(GL_TRIANGLES, 0, numElements);
  
          glBindTexture(GL_TEXTURE_2D, texture2);
          glDrawArrays(GL_TRIANGLES, 0, numElements);
      }
  }
  
  void ChangeProgramThenDraw(unsigned int iterations,
                             GLsizei numElements,
                             GLuint program1,
                             GLuint program2)
  {
      for (unsigned int it = 0; it < iterations; it++)
      {
          glUseProgram(program1);
          glDrawArrays(GL_TRIANGLES, 0, numElements);
  
          glUseProgram(program2);
          glDrawArrays(GL_TRIANGLES, 0, numElements);
      }
  }
  
  void CycleVertexBufferThenDraw(unsigned int iterations,
                                 GLsizei numElements,
                                 const std::vector<GLuint> &vbos,
                                 size_t *currentVBO)
  {
      for (unsigned int it = 0; it < iterations; it++)
      {
          GLuint vbo = vbos[*currentVBO];
          glBindBuffer(GL_ARRAY_BUFFER, vbo);
          glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, 0);
          glDrawArrays(GL_TRIANGLES, 0, numElements);
          *currentVBO = (*currentVBO + 1) % vbos.size();
      }
  }
  
  void ChangeScissorThenDraw(unsigned int iterations,
                             GLsizei numElements,
                             unsigned int windowWidth,
                             unsigned int windowHeight)
  {
      // Change scissor as such:
      //
      // - Start with a narrow vertical bar:
      //
      //           Scissor
      //              |
      //              V
      //       +-----+-+-----+
      //       |     | |     | <-- Window
      //       |     | |     |
      //       |     | |     |
      //       |     | |     |
      //       |     | |     |
      //       |     | |     |
      //       +-----+-+-----+
      //
      // - Gradually reduce height and increase width, to end up with a narrow horizontal bar:
      //
      //       +-------------+
      //       |             |
      //       |             |
      //       +-------------+ <-- Scissor
      //       +-------------+
      //       |             |
      //       |             |
      //       +-------------+
      //
      // - If more iterations left, restart, but shift the initial bar left to cover more area:
      //
      //       +---+-+-------+          +-------------+
      //       |   | |       |          |             |
      //       |   | |       |          +-------------+
      //       |   | |       |   --->   |             |
      //       |   | |       |          |             |
      //       |   | |       |          +-------------+
      //       |   | |       |          |             |
      //       +---+-+-------+          +-------------+
      //
      //       +-+-+---------+          +-------------+
      //       | | |         |          +-------------+
      //       | | |         |          |             |
      //       | | |         |   --->   |             |
      //       | | |         |          |             |
      //       | | |         |          |             |
      //       | | |         |          +-------------+
      //       +-+-+---------+          +-------------+
  
      glEnable(GL_SCISSOR_TEST);
  
      constexpr unsigned int kScissorStep  = 2;
      unsigned int scissorX                = windowWidth / 2 - 1;
      unsigned int scissorY                = 0;
      unsigned int scissorWidth            = 2;
      unsigned int scissorHeight           = windowHeight;
      unsigned int scissorPatternIteration = 0;
  
      for (unsigned int it = 0; it < iterations; it++)
      {
          glScissor(scissorX, scissorY, scissorWidth, scissorHeight);
          glDrawArrays(GL_TRIANGLES, 0, numElements);
  
          if (scissorX < kScissorStep || scissorHeight < kScissorStep * 2)
          {
              ++scissorPatternIteration;
              scissorX      = windowWidth / 2 - 1 - scissorPatternIteration * 2;
              scissorY      = 0;
              scissorWidth  = 2;
              scissorHeight = windowHeight;
          }
          else
          {
              scissorX -= kScissorStep;
              scissorY += kScissorStep;
              scissorWidth += kScissorStep * 2;
              scissorHeight -= kScissorStep * 2;
          }
      }
  }
  
  void DrawCallPerfBenchmark::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;
      const auto &params    = GetParam();
      GLsizei numElements   = static_cast<GLsizei>(3 * mNumTris);
  
      switch (params.stateChange)
      {
          case StateChange::VertexAttrib:
              ChangeVertexAttribThenDraw<1>(params.iterationsPerStep, numElements, mBuffer1);
              break;
          case StateChange::VertexBuffer:
              ChangeArrayBuffersThenDraw<1>(params.iterationsPerStep, numElements, mBuffer1,
                                            mBuffer2);
              break;
          case StateChange::ManyVertexBuffers:
              ChangeArrayBuffersThenDraw<5>(params.iterationsPerStep, numElements, mBuffer1,
                                            mBuffer2);
              break;
          case StateChange::Texture:
              ChangeTextureThenDraw(params.iterationsPerStep, numElements, mTexture1, mTexture2);
              break;
          case StateChange::Program:
              ChangeProgramThenDraw(params.iterationsPerStep, numElements, mProgram1, mProgram2);
              break;
          case StateChange::NoChange:
              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))
              {
                  ClearThenDraw(params.iterationsPerStep, numElements);
              }
              else
              {
                  JustDraw(params.iterationsPerStep, numElements);
              }
              break;
          case StateChange::VertexBufferCycle:
              CycleVertexBufferThenDraw(params.iterationsPerStep, numElements, mVBOPool,
                                        &mCurrentVBO);
              break;
          case StateChange::Scissor:
              ChangeScissorThenDraw(params.iterationsPerStep, numElements, getWindow()->getWidth(),
                                    getWindow()->getHeight());
              break;
          case StateChange::InvalidEnum:
              FAIL() << "Invalid state change.";
              break;
      }
  
      ASSERT_GL_NO_ERROR();
  }
  
  TEST_P(DrawCallPerfBenchmark, Run)
  {
      run();
  }
  
  using namespace params;
  
  DrawArraysPerfParams CombineStateChange(const DrawArraysPerfParams &in, StateChange stateChange)
  {
      DrawArraysPerfParams out = in;
      out.stateChange          = stateChange;
  
      // Crank up iteration count to ensure we cycle through all VBs before a swap.
      if (stateChange == StateChange::VertexBufferCycle)
      {
          out.iterationsPerStep = kCycleVBOPoolSize * 2;
      }
  
      return out;
  }
  
  using P = DrawArraysPerfParams;
  
  std::vector<P> gTestsWithStateChange =
      CombineWithValues({P()}, angle::AllEnums<StateChange>(), CombineStateChange);
  std::vector<P> gTestsWithRenderer =
      CombineWithFuncs(gTestsWithStateChange, {D3D11<P>, GL<P>, Vulkan<P>, WGL<P>});
  std::vector<P> gTestsWithDevice =
      CombineWithFuncs(gTestsWithRenderer, {Passthrough<P>, Offscreen<P>, NullDevice<P>});
  
  ANGLE_INSTANTIATE_TEST_ARRAY(DrawCallPerfBenchmark, gTestsWithDevice);
  
  }  // anonymous namespace
  

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