kc3-lang/angle/src/tests/test_utils/draw_call_perf_utils.cpp

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• Hash : ba319ba3
  Author :
  Date : 2018-12-29T10:29:33
  

  Re-land "Load entry points dynamically in tests and samples."
  
  Fixes the Android/ChromeOS/Fuchsia builds by using consistent EGL
  headers.
  
  This CL adds a dynamic loader generator based on XML files. It also
  refactors the entry point generation script to move the XML parsing
  into a helper class.
  
  Additionally this includes a new GLES 1.0 base header. The new
  header allows for function pointer types and hiding prototypes.
  
  All tests and samples now load ANGLE dynamically. In the future this
  will be extended to load entry points from the driver directly when
  possible. This will allow us to perform more accurate A/B testing.
  
  The new build configuration leads to some tests having more warnings
  applied. The CL includes fixes for the new warnings.
  
  Bug: angleproject:2995
  Change-Id: I5a8772f41a0f89570b3736b785f44b7de1539b57
  Reviewed-on: https://chromium-review.googlesource.com/c/1392382
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  

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• src/tests/test_utils/draw_call_perf_utils.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.
  //
  // draw_call_perf_utils.cpp:
  //   Common utilities for performance tests that need to do a large amount of draw calls.
  //
  
  #include "draw_call_perf_utils.h"
  
  #include <vector>
  
  #include "util/shader_utils.h"
  
  namespace
  {
  constexpr char kSimpleScaleAndOffsetVS[] = R"(attribute vec2 vPosition;
  uniform float uScale;
  uniform float uOffset;
  void main()
  {
      gl_Position = vec4(vPosition * vec2(uScale) + vec2(uOffset), 0, 1);
  })";
  
  constexpr char kSimpleDrawVS[] = R"(attribute vec2 vPosition;
  const float scale = 0.5;
  const float offset = -0.5;
  
  void main()
  {
      gl_Position = vec4(vPosition * vec2(scale) + vec2(offset), 0, 1);
  })";
  
  constexpr char kSimpleTexCoordVS[] = R"(attribute vec2 vPosition;
  varying vec2 texCoord;
  void main()
  {
      gl_Position = vec4(vPosition, 0, 1);
      texCoord = vPosition * 0.5 + vec2(0.5);
  })";
  
  constexpr char kSimpleFS[] = R"(precision mediump float;
  void main()
  {
      gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
  })";
  
  constexpr char kSimpleTextureFS[] = R"(precision mediump float;
  varying vec2 texCoord;
  uniform sampler2D tex;
  void main()
  {
      gl_FragColor = texture2D(tex, texCoord);
  })";
  
  void Generate2DTriangleData(size_t numTris, std::vector<float> *floatData)
  {
      for (size_t triIndex = 0; triIndex < numTris; ++triIndex)
      {
          floatData->push_back(1.0f);
          floatData->push_back(2.0f);
  
          floatData->push_back(0.0f);
          floatData->push_back(0.0f);
  
          floatData->push_back(2.0f);
          floatData->push_back(0.0f);
      }
  }
  
  }  // anonymous namespace
  
  GLuint SetupSimpleScaleAndOffsetProgram()
  {
      GLuint program = CompileProgram(kSimpleScaleAndOffsetVS, kSimpleFS);
      if (program == 0u)
      {
          return program;
      }
  
      // Use the program object
      glUseProgram(program);
  
      GLfloat scale  = 0.5f;
      GLfloat offset = -0.5f;
  
      glUniform1f(glGetUniformLocation(program, "uScale"), scale);
      glUniform1f(glGetUniformLocation(program, "uOffset"), offset);
      return program;
  }
  
  GLuint SetupSimpleDrawProgram()
  {
      GLuint program = CompileProgram(kSimpleDrawVS, kSimpleFS);
      if (program == 0u)
      {
          return program;
      }
  
      // Use the program object
      glUseProgram(program);
  
      return program;
  }
  
  GLuint SetupSimpleTextureProgram()
  {
      GLuint program = CompileProgram(kSimpleTexCoordVS, kSimpleTextureFS);
      if (program == 0u)
      {
          return program;
      }
  
      // Use the program object
      glUseProgram(program);
  
      return program;
  }
  
  GLuint Create2DTriangleBuffer(size_t numTris, GLenum usage)
  {
      GLuint buffer = 0u;
      glGenBuffers(1, &buffer);
      glBindBuffer(GL_ARRAY_BUFFER, buffer);
  
      std::vector<GLfloat> floatData;
      Generate2DTriangleData(numTris, &floatData);
  
      // To avoid generating GL errors when testing validation-only with zero triangles.
      if (floatData.empty())
      {
          floatData.push_back(0.0f);
      }
  
      glBufferData(GL_ARRAY_BUFFER, floatData.size() * sizeof(GLfloat), &floatData[0], usage);
  
      return buffer;
  }
  
  void CreateColorFBO(GLsizei width, GLsizei height, GLuint *fbo, GLuint *texture)
  {
      glGenFramebuffers(1, fbo);
      glBindFramebuffer(GL_FRAMEBUFFER, *fbo);
      glGenTextures(1, texture);
      glBindTexture(GL_TEXTURE_2D, *texture);
      glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
      glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, *texture, 0);
  }
  

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