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

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• Hash : 9f20dd77
  Author :
  Date : 2019-01-20T14:31:59
  

  Add draw call perf test using 5 vertex arrays.
  
  This should highlight problems with array buffer state changes even
  more than the single attribute test.
  
  Bug: angleproject:3014
  Change-Id: I7f42ddb48f0f794fa279b81c8378dab8dc9db489
  Reviewed-on: https://chromium-review.googlesource.com/c/1413788
  Commit-Queue: Jamie Madill <jmadill@google.com>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

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• src/tests/perf_tests/DrawCallPerf.cpp

• //
  // Copyright (c) 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 "test_utils/draw_call_perf_utils.h"
  #include "util/shader_utils.h"
  
  namespace
  {
  enum class StateChange
  {
      NoChange,
      VertexBuffer,
      ManyVertexBuffers,
      Texture,
  };
  
  struct DrawArraysPerfParams : public DrawCallPerfParams
  {
      DrawArraysPerfParams(const DrawCallPerfParams &base) : DrawCallPerfParams(base) {}
  
      std::string suffix() const override;
  
      StateChange stateChange = StateChange::NoChange;
  };
  
  std::string DrawArraysPerfParams::suffix() const
  {
      std::stringstream strstr;
  
      strstr << DrawCallPerfParams::suffix();
  
      switch (stateChange)
      {
          case StateChange::VertexBuffer:
              strstr << "_vbo_change";
              break;
          case StateChange::ManyVertexBuffers:
              strstr << "_manyvbos_change";
              break;
          case StateChange::Texture:
              strstr << "_tex_change";
              break;
          default:
              break;
      }
  
      return strstr.str();
  }
  
  std::ostream &operator<<(std::ostream &os, const DrawArraysPerfParams &params)
  {
      os << params.suffix().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 mProgram    = 0;
      GLuint mBuffer1    = 0;
      GLuint mBuffer2    = 0;
      GLuint mFBO        = 0;
      GLuint mFBOTexture = 0;
      GLuint mTexture1   = 0;
      GLuint mTexture2   = 0;
      int mNumTris       = GetParam().numTris;
  };
  
  DrawCallPerfBenchmark::DrawCallPerfBenchmark() : ANGLERenderTest("DrawCallPerf", GetParam()) {}
  
  void DrawCallPerfBenchmark::initializeBenchmark()
  {
      const auto &params = GetParam();
  
      if (params.stateChange == StateChange::Texture)
      {
          mProgram = SetupSimpleTextureProgram();
      }
      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);
  })";
  
          mProgram = CompileProgram(kVS, kFS);
          glBindAttribLocation(mProgram, 1, "v0");
          glBindAttribLocation(mProgram, 2, "v1");
          glBindAttribLocation(mProgram, 3, "v2");
          glBindAttribLocation(mProgram, 4, "v3");
          glEnableVertexAttribArray(1);
          glEnableVertexAttribArray(2);
          glEnableVertexAttribArray(3);
          glEnableVertexAttribArray(4);
      }
      else
      {
          mProgram = SetupSimpleDrawProgram();
      }
  
      ASSERT_NE(0u, mProgram);
  
      // Re-link program to ensure the attrib bindings are used.
      glBindAttribLocation(mProgram, 0, "vPosition");
      glLinkProgram(mProgram);
      glUseProgram(mProgram);
  
      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.useFBO)
      {
          CreateColorFBO(getWindow()->getWidth(), getWindow()->getHeight(), &mFBOTexture, &mFBO);
      }
  
      mTexture1 = CreateSimpleTexture2D();
      mTexture2 = CreateSimpleTexture2D();
  
      ASSERT_GL_NO_ERROR();
  }
  
  void DrawCallPerfBenchmark::destroyBenchmark()
  {
      glDeleteProgram(mProgram);
      glDeleteBuffers(1, &mBuffer1);
      glDeleteBuffers(1, &mBuffer2);
      glDeleteTextures(1, &mFBOTexture);
      glDeleteTextures(1, &mTexture1);
      glDeleteTextures(1, &mTexture2);
      glDeleteFramebuffers(1, &mFBO);
  }
  
  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 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 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::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::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;
      }
  
      ASSERT_GL_NO_ERROR();
  }
  
  TEST_P(DrawCallPerfBenchmark, Run)
  {
      run();
  }
  
  DrawArraysPerfParams DrawArrays(const DrawCallPerfParams &base, StateChange stateChange)
  {
      DrawArraysPerfParams params(base);
      params.stateChange = stateChange;
      return params;
  }
  
  ANGLE_INSTANTIATE_TEST(
      DrawCallPerfBenchmark,
      DrawArrays(DrawCallPerfD3D9Params(false, false), StateChange::NoChange),
      DrawArrays(DrawCallPerfD3D9Params(true, false), StateChange::NoChange),
      DrawArrays(DrawCallPerfD3D11Params(false, false), StateChange::NoChange),
      DrawArrays(DrawCallPerfD3D11Params(true, false), StateChange::NoChange),
      DrawArrays(DrawCallPerfD3D11Params(true, true), StateChange::NoChange),
      DrawArrays(DrawCallPerfD3D11Params(false, false), StateChange::VertexBuffer),
      DrawArrays(DrawCallPerfD3D11Params(true, false), StateChange::VertexBuffer),
      DrawArrays(DrawCallPerfD3D11Params(false, false), StateChange::Texture),
      DrawArrays(DrawCallPerfD3D11Params(true, false), StateChange::Texture),
      DrawArrays(DrawCallPerfOpenGLOrGLESParams(false, false), StateChange::NoChange),
      DrawArrays(DrawCallPerfOpenGLOrGLESParams(true, false), StateChange::NoChange),
      DrawArrays(DrawCallPerfOpenGLOrGLESParams(true, true), StateChange::NoChange),
      DrawArrays(DrawCallPerfOpenGLOrGLESParams(false, false), StateChange::VertexBuffer),
      DrawArrays(DrawCallPerfOpenGLOrGLESParams(true, false), StateChange::VertexBuffer),
      DrawArrays(DrawCallPerfOpenGLOrGLESParams(false, false), StateChange::ManyVertexBuffers),
      DrawArrays(DrawCallPerfOpenGLOrGLESParams(true, false), StateChange::ManyVertexBuffers),
      DrawArrays(DrawCallPerfOpenGLOrGLESParams(false, false), StateChange::Texture),
      DrawArrays(DrawCallPerfOpenGLOrGLESParams(true, false), StateChange::Texture),
      DrawArrays(DrawCallPerfValidationOnly(), StateChange::NoChange),
      DrawArrays(DrawCallPerfVulkanParams(false, false), StateChange::NoChange),
      DrawArrays(DrawCallPerfVulkanParams(true, false), StateChange::NoChange),
      DrawArrays(DrawCallPerfVulkanParams(false, false), StateChange::VertexBuffer),
      DrawArrays(DrawCallPerfVulkanParams(true, false), StateChange::VertexBuffer),
      DrawArrays(DrawCallPerfVulkanParams(false, false), StateChange::ManyVertexBuffers),
      DrawArrays(DrawCallPerfVulkanParams(true, false), StateChange::ManyVertexBuffers),
      DrawArrays(DrawCallPerfVulkanParams(false, false), StateChange::Texture),
      DrawArrays(DrawCallPerfVulkanParams(true, false), StateChange::Texture),
      DrawArrays(DrawCallPerfWGLParams(false), StateChange::NoChange),
      DrawArrays(DrawCallPerfWGLParams(false), StateChange::VertexBuffer),
      DrawArrays(DrawCallPerfWGLParams(false), StateChange::Texture));
  
  }  // anonymous namespace
  

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