kc3-lang/angle/src/tests/compiler_tests/BuiltInFunctionEmulator_test.cpp

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• Author : Olli Etuaho
  Date : 2015-06-09 15:49:41
  Hash : 7adfb184
  Message : Refactor common compiler test functionality into helper functions Refactor translating a ESSL shader string into a target language so that compiler initialization and cleanup code can be reused between test classes. BUG=angleproject:817 TEST=angle_unittests Change-Id: Idb229dceb9e17b13ed6ad2a68ab55ed5c968780e Reviewed-on: https://chromium-review.googlesource.com/275814 Tested-by: Olli Etuaho <oetuaho@nvidia.com> Reviewed-by: Jamie Madill <jmadill@chromium.org>

• src/tests/compiler_tests/BuiltInFunctionEmulator_test.cpp

• //
  // Copyright (c) 2015 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.
  //
  // BuiltInFunctionEmulator_test.cpp:
  //   Tests for writing the code for built-in function emulation.
  //
  
  #include "angle_gl.h"
  #include "gtest/gtest.h"
  #include "GLSLANG/ShaderLang.h"
  #include "tests/test_utils/compiler_test.h"
  
  namespace
  {
  
  // Test for the SH_EMULATE_BUILT_IN_FUNCTIONS flag.
  class EmulateBuiltInFunctionsTest : public testing::Test
  {
    public:
      EmulateBuiltInFunctionsTest() {}
  
    protected:
      void compile(const std::string &shaderString)
      {
          std::string infoLog;
          bool compilationSuccess = compileTestShader(GL_VERTEX_SHADER,
                                                      SH_GLES2_SPEC,
                                                      SH_GLSL_COMPATIBILITY_OUTPUT,
                                                      shaderString,
                                                      SH_EMULATE_BUILT_IN_FUNCTIONS,
                                                      &mGLSLCode,
                                                      &infoLog);
          if (!compilationSuccess)
          {
              FAIL() << "Shader compilation into GLSL failed " << infoLog;
          }
      }
  
      bool foundInCode(const char *stringToFind)
      {
          return mGLSLCode.find(stringToFind) != std::string::npos;
      }
  
    private:
      std::string mGLSLCode;
  };
  
  TEST_F(EmulateBuiltInFunctionsTest, DotEmulated)
  {
      const std::string shaderString =
          "precision mediump float;\n"
          "uniform float u;\n"
          "void main()\n"
          "{\n"
          "   gl_Position = vec4(dot(u, 1.0), 1.0, 1.0, 1.0);\n"
          "}\n";
      compile(shaderString);
      ASSERT_TRUE(foundInCode("webgl_dot_emu("));
  }
  
  } // namespace