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

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• Author : Stuart Morgan
  Date : 2019-08-14 12:25:12
  Hash : 9d737966
  Message : Standardize copyright notices to project style For all "ANGLE Project" copyrights, standardize to the format specified by the style guide. Changes: - "Copyright (c)" and "Copyright(c)" changed to just "Copyright". - Removed the second half of date ranges ("Y1Y1-Y2Y2"->"Y1Y1"). - Fixed a small number of files that had no copyright date using the initial commit year from the version control history. - Fixed one instance of copyright being "The ANGLE Project" rather than "The ANGLE Project Authors" These changes are applied both to the copyright of source file, and where applicable to copyright statements that are generated by templates. BUG=angleproject:3811 Change-Id: I973dd65e4ef9deeba232d5be74c768256a0eb2e5 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1754397 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>

• src/tests/compiler_tests/FragDepth_test.cpp

• //
  // Copyright 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.
  //
  // FragDepth_test.cpp:
  //   Test for GLES SL 3.0 gl_FragDepth variable implementation.
  //
  
  #include "GLSLANG/ShaderLang.h"
  #include "angle_gl.h"
  #include "gtest/gtest.h"
  
  namespace
  {
  const char ESSLVersion100[] = "#version 100\n";
  const char ESSLVersion300[] = "#version 300 es\n";
  const char EXTFDPragma[]    = "#extension GL_EXT_frag_depth : require\n";
  }  // namespace
  
  class FragDepthTest : public testing::TestWithParam<bool>
  {
    protected:
      void SetUp() override
      {
          sh::InitBuiltInResources(&mResources);
          mCompiler                 = nullptr;
          mResources.EXT_frag_depth = GetParam();
      }
  
      void TearDown() override { DestroyCompiler(); }
      void DestroyCompiler()
      {
          if (mCompiler)
          {
              sh::Destruct(mCompiler);
              mCompiler = nullptr;
          }
      }
  
      void InitializeCompiler()
      {
          DestroyCompiler();
          mCompiler = sh::ConstructCompiler(GL_FRAGMENT_SHADER, SH_GLES3_SPEC,
                                            SH_GLSL_COMPATIBILITY_OUTPUT, &mResources);
          ASSERT_TRUE(mCompiler != nullptr) << "Compiler could not be constructed.";
      }
  
      testing::AssertionResult TestShaderCompile(const char *version,
                                                 const char *pragma,
                                                 const char *shader)
      {
          const char *shaderStrings[] = {version, pragma, shader};
          bool success                = sh::Compile(mCompiler, shaderStrings, 3, 0);
          if (success)
          {
              return ::testing::AssertionSuccess() << "Compilation success";
          }
          return ::testing::AssertionFailure() << sh::GetInfoLog(mCompiler);
      }
  
    protected:
      ShBuiltInResources mResources;
      ShHandle mCompiler;
  };
  
  // The GLES SL 3.0 built-in variable gl_FragDepth fails to compile with GLES SL 1.0.
  TEST_P(FragDepthTest, CompileFailsESSL100)
  {
      static const char shaderString[] =
          "precision mediump float;\n"
          "void main() { \n"
          "    gl_FragDepth = 1.0;\n"
          "}\n";
  
      InitializeCompiler();
      EXPECT_FALSE(TestShaderCompile(ESSLVersion100, "", shaderString));
      EXPECT_FALSE(TestShaderCompile("", "", shaderString));
      EXPECT_FALSE(TestShaderCompile("", EXTFDPragma, shaderString));
  }
  
  // The GLES SL 3.0 built-in variable gl_FragDepth compiles with GLES SL 3.0.
  TEST_P(FragDepthTest, CompileSucceedsESSL300)
  {
      static const char shaderString[] =
          "precision mediump float;\n"
          "void main() { \n"
          "    gl_FragDepth = 1.0;\n"
          "}\n";
      InitializeCompiler();
      EXPECT_TRUE(TestShaderCompile(ESSLVersion300, "", shaderString));
  }
  
  // Using #extension GL_EXT_frag_depth in GLSL ES 3.0 shader fails to compile.
  TEST_P(FragDepthTest, ExtensionFDFailsESSL300)
  {
      static const char shaderString[] =
          "precision mediump float;\n"
          "out vec4 fragColor;\n"
          "void main() { \n"
          "    fragColor = vec4(1.0);\n"
          "}\n";
      InitializeCompiler();
      if (mResources.EXT_frag_depth == 1)
      {
          // TODO(kkinnunen, geofflang): this should fail. Extensions need to have similar level
          // system to SymbolTable.  The biggest task is to implement version-aware preprocessor, so
          // that the extension defines can be defined depending on the version that the preprocessor
          // saw or did not see.
          EXPECT_TRUE(TestShaderCompile(ESSLVersion300, EXTFDPragma, shaderString));
      }
      else
      {
          EXPECT_FALSE(TestShaderCompile(ESSLVersion300, EXTFDPragma, shaderString));
      }
  }
  
  // The tests should pass regardless whether the EXT_frag_depth is on or not.
  INSTANTIATE_TEST_SUITE_P(FragDepthTests, FragDepthTest, testing::Values(false, true));