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

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• Author : Geoff Lang
  Date : 2016-04-12 11:37:23
  Hash : f4863a45
  Message : Add a perf test for setting uniform data. BUG=angleproject:1353 Change-Id: Iaae79bb85318583c12b9a939ea27a7f7f7f64faf Reviewed-on: https://chromium-review.googlesource.com/338441 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Corentin Wallez <cwallez@chromium.org> Commit-Queue: Geoff Lang <geofflang@chromium.org>

• src/tests/perf_tests/UniformsPerf.cpp

• //
  // Copyright (c) 2016 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.
  //
  // UniformsBenchmark:
  //   Performance test for setting uniform data.
  //
  
  #include "ANGLEPerfTest.h"
  
  #include <iostream>
  #include <random>
  #include <sstream>
  
  #include "shader_utils.h"
  
  using namespace angle;
  
  namespace
  {
  
  struct UniformsParams final : public RenderTestParams
  {
      UniformsParams()
      {
          // Common default params
          majorVersion = 2;
          minorVersion = 0;
          windowWidth  = 720;
          windowHeight = 720;
          iterations   = 4;
  
          numVertexUniforms   = 200;
          numFragmentUniforms = 200;
      }
  
      std::string suffix() const override;
      size_t numVertexUniforms;
      size_t numFragmentUniforms;
  
      // static parameters
      size_t iterations;
  };
  
  std::ostream &operator<<(std::ostream &os, const UniformsParams &params)
  {
      os << params.suffix().substr(1);
      return os;
  }
  
  std::string UniformsParams::suffix() const
  {
      std::stringstream strstr;
  
      strstr << RenderTestParams::suffix();
      strstr << "_" << numVertexUniforms << "_vertex_uniforms";
      strstr << "_" << numFragmentUniforms << "_fragment_uniforms";
  
      return strstr.str();
  }
  
  class UniformsBenchmark : public ANGLERenderTest,
                            public ::testing::WithParamInterface<UniformsParams>
  {
    public:
      UniformsBenchmark();
  
      void initializeBenchmark() override;
      void destroyBenchmark() override;
      void drawBenchmark() override;
  
    private:
      void initShaders();
      void initVertexBuffer();
      void initTextures();
  
      GLuint mProgram;
      std::vector<GLuint> mUniformLocations;
  };
  
  UniformsBenchmark::UniformsBenchmark() : ANGLERenderTest("Uniforms", GetParam()), mProgram(0u)
  {
  }
  
  void UniformsBenchmark::initializeBenchmark()
  {
      const auto &params = GetParam();
  
      ASSERT_GT(params.iterations, 0u);
  
      // Verify the uniform counts are within the limits
      GLint maxVertexUniforms, maxFragmentUniforms;
      glGetIntegerv(GL_MAX_VERTEX_UNIFORM_VECTORS, &maxVertexUniforms);
      glGetIntegerv(GL_MAX_FRAGMENT_UNIFORM_VECTORS, &maxFragmentUniforms);
  
      if (params.numVertexUniforms > static_cast<size_t>(maxVertexUniforms))
      {
          FAIL() << "Vertex uniform count (" << params.numVertexUniforms << ")"
                 << " exceeds maximum vertex uniform count: " << maxVertexUniforms << std::endl;
      }
      if (params.numFragmentUniforms > static_cast<size_t>(maxFragmentUniforms))
      {
          FAIL() << "Fragment uniform count (" << params.numFragmentUniforms << ")"
                 << " exceeds maximum fragment uniform count: " << maxFragmentUniforms << std::endl;
      }
  
      initShaders();
      glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
      glViewport(0, 0, getWindow()->getWidth(), getWindow()->getHeight());
  
      ASSERT_GL_NO_ERROR();
  }
  
  std::string GetUniformLocationName(size_t idx, bool vertexShader)
  {
      std::stringstream strstr;
      strstr << (vertexShader ? "vs" : "fs") << "_u_" << idx;
      return strstr.str();
  }
  
  void UniformsBenchmark::initShaders()
  {
      const auto &params = GetParam();
  
      std::stringstream vstrstr;
      vstrstr << "precision mediump float;\n";
      for (size_t i = 0; i < params.numVertexUniforms; i++)
      {
          vstrstr << "uniform vec4 " << GetUniformLocationName(i, true) << ";\n";
      }
      vstrstr << "void main()\n"
                 "{\n"
                 "    gl_Position = vec4(0, 0, 0, 0);\n";
      for (size_t i = 0; i < params.numVertexUniforms; i++)
      {
          vstrstr << "    gl_Position = gl_Position + " << GetUniformLocationName(i, true) << ";\n";
      }
      vstrstr << "}";
  
      std::stringstream fstrstr;
      fstrstr << "precision mediump float;\n";
      for (size_t i = 0; i < params.numFragmentUniforms; i++)
      {
          fstrstr << "uniform vec4 " << GetUniformLocationName(i, false) << ";\n";
      }
      fstrstr << "void main()\n"
                 "{\n"
                 "    gl_FragColor = vec4(0, 0, 0, 0);\n";
      for (size_t i = 0; i < params.numFragmentUniforms; i++)
      {
          fstrstr << "    gl_FragColor = gl_FragColor + " << GetUniformLocationName(i, false)
                  << ";\n";
      }
      fstrstr << "}";
  
      mProgram = CompileProgram(vstrstr.str(), fstrstr.str());
      ASSERT_NE(0u, mProgram);
  
      for (size_t i = 0; i < params.numVertexUniforms; ++i)
      {
          GLint location = glGetUniformLocation(mProgram, GetUniformLocationName(i, true).c_str());
          ASSERT_NE(-1, location);
          mUniformLocations.push_back(location);
      }
      for (size_t i = 0; i < params.numFragmentUniforms; ++i)
      {
          GLint location = glGetUniformLocation(mProgram, GetUniformLocationName(i, false).c_str());
          ASSERT_NE(-1, location);
          mUniformLocations.push_back(location);
      }
  
      // Use the program object
      glUseProgram(mProgram);
  }
  
  void UniformsBenchmark::destroyBenchmark()
  {
      glDeleteProgram(mProgram);
  }
  
  void UniformsBenchmark::drawBenchmark()
  {
      const auto &params = GetParam();
  
      for (size_t it = 0; it < params.iterations; ++it)
      {
          for (size_t uniform = 0; uniform < mUniformLocations.size(); ++uniform)
          {
              float value = static_cast<float>(uniform);
              glUniform4f(mUniformLocations[uniform], value, value, value, value);
          }
  
          glDrawArrays(GL_TRIANGLES, 0, 3);
      }
  
      ASSERT_GL_NO_ERROR();
  }
  
  UniformsParams D3D11Params()
  {
      UniformsParams params;
      params.eglParameters = egl_platform::D3D11();
      return params;
  }
  
  UniformsParams D3D9Params()
  {
      UniformsParams params;
      params.eglParameters = egl_platform::D3D9();
      return params;
  }
  
  UniformsParams OpenGLParams()
  {
      UniformsParams params;
      params.eglParameters = egl_platform::OPENGL();
      return params;
  }
  
  }  // anonymous namespace
  
  TEST_P(UniformsBenchmark, Run)
  {
      run();
  }
  
  ANGLE_INSTANTIATE_TEST(UniformsBenchmark, D3D11Params(), D3D9Params(), OpenGLParams());