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

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• Author : Olli Etuaho
  Date : 2017-12-08 20:49:00
  Hash : ae4dbf32
  Message : Don't allocate name strings for empty symbols This removes unnecessary memory allocations. BUG=angleproject:2267 TEST=angle_unittests Change-Id: Ide575ea19ab2f8e9fc93092490f1352efa6024a3 Reviewed-on: https://chromium-review.googlesource.com/817415 Commit-Queue: Olli Etuaho <oetuaho@nvidia.com> Reviewed-by: Corentin Wallez <cwallez@chromium.org>

• src/tests/compiler_tests/RegenerateStructNames_test.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.
  //
  // RegenerateStructNames_test.cpp:
  //   Tests for regenerating struct names.
  //
  
  #include "GLSLANG/ShaderLang.h"
  #include "angle_gl.h"
  #include "gtest/gtest.h"
  #include "tests/test_utils/compiler_test.h"
  
  using namespace sh;
  
  class RegenerateStructNamesTest : public MatchOutputCodeTest
  {
    public:
      RegenerateStructNamesTest()
          : MatchOutputCodeTest(GL_FRAGMENT_SHADER, SH_REGENERATE_STRUCT_NAMES, SH_ESSL_OUTPUT)
      {
      }
  };
  
  // Test that a struct defined in a function scope is renamed. The global struct that's used as a
  // type of a uniform cannot be renamed.
  TEST_F(RegenerateStructNamesTest, GlobalStructAndLocalStructWithTheSameName)
  {
      const std::string &shaderString =
          R"(precision mediump float;
  
          struct myStruct
          {
              float foo;
          };
  
          uniform myStruct us;
  
          void main()
          {
              struct myStruct
              {
                  vec2 bar;
              };
              myStruct scoped;
              scoped.bar = vec2(1.0, 2.0) * us.foo;
              gl_FragColor = vec4(scoped.bar, 0.0, 1.0);
          })";
      compile(shaderString);
      EXPECT_TRUE(foundInCode("struct _umyStruct"));
      EXPECT_TRUE(foundInCode("struct _u_webgl_struct_"));
  }
  
  // Test that a nameless struct is handled gracefully.
  TEST_F(RegenerateStructNamesTest, NamelessStruct)
  {
      const std::string &shaderString =
          R"(precision mediump float;
  
          uniform float u;
  
          void main()
          {
              struct
              {
                  vec2 bar;
              } scoped;
              scoped.bar = vec2(1.0, 2.0) * u;
              gl_FragColor = vec4(scoped.bar, 0.0, 1.0);
          })";
      compile(shaderString);
      EXPECT_TRUE(foundInCode("struct"));
  }