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

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• Hash : 1915652e
  Author :
  Date : 2015-06-18T09:40:14
  

  Emulate the pack/unpack functions for unorms.
  
  BUG=angleproject:1044
  
  Change-Id: I0e7bee366398159ae6b87a820f36cb51c05cb064
  Reviewed-on: https://chromium-review.googlesource.com/280362
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Tested-by: Geoff Lang <geofflang@chromium.org>
  

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• src/tests/compiler_tests/Pack_Unpack_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.
  //
  // Pack_Unpack_test.cpp:
  //   Tests for the emulating pack_unpack functions for GLSL.
  //
  
  #include "angle_gl.h"
  #include "gtest/gtest.h"
  #include "GLSLANG/ShaderLang.h"
  #include "tests/test_utils/compiler_test.h"
  
  namespace
  {
  
  class PackUnpackTest : public testing::TestWithParam<ShShaderOutput>
  {
    public:
      PackUnpackTest() {}
  
    protected:
      void compile(const std::string& shaderString)
      {
          std::string infoLog;
          bool compilationSuccess = compileTestShader(GL_FRAGMENT_SHADER, SH_GLES3_SPEC,
                                                      GetParam(),
                                                      shaderString, &mGLSLCode, &infoLog);
          if (!compilationSuccess)
          {
              FAIL() << "Shader compilation into GLSL failed " << infoLog;
          }
      }
  
      bool foundInGLSLCode(const char* stringToFind) const
      {
          return mGLSLCode.find(stringToFind) != std::string::npos;
      }
  
    private:
      std::string mGLSLCode;
  };
  
  //Check if PackSnorm2x16 Emulation for GLSL < 4.2 compile correctly.
  TEST_P(PackUnpackTest, PackSnorm2x16Emulation)
  {
      const std::string &shaderString =
          "#version 300 es\n"
          "precision mediump float;\n"
          "layout(location = 0) out mediump vec4 fragColor;"
          "void main() {\n"
          "   vec2 v;\n"
          "   uint u = packSnorm2x16(v);\n"
          "   fragColor = vec4(0.0);\n"
          "}\n";
      compile(shaderString);
      ASSERT_EQ(GetParam() < SH_GLSL_420_CORE_OUTPUT, foundInGLSLCode("uint webgl_packSnorm2x16_emu(vec2 v)"));
  }
  
  //Check if UnpackSnorm2x16 Emulation for GLSL < 4.2 compile correctly.
  TEST_P(PackUnpackTest, UnpackSnorm2x16Emulation)
  {
      const std::string &shaderString =
          "#version 300 es\n"
          "precision mediump float;\n"
          "layout(location = 0) out mediump vec4 fragColor;"
          "void main() {\n"
          "   uint u;\n"
          "   vec2 v=unpackSnorm2x16(u);\n"
          "   fragColor = vec4(0.0);\n"
          "}\n";
      compile(shaderString);
      ASSERT_EQ(GetParam() < SH_GLSL_420_CORE_OUTPUT, foundInGLSLCode("vec2 webgl_unpackSnorm2x16_emu(uint u)"));
  }
  
  //Check if PackUnorm2x16 Emulation for GLSL < 4.1 compiles correctly.
  TEST_P(PackUnpackTest, PackUnorm2x16Emulation)
  {
      const std::string &shaderString =
          "#version 300 es\n"
          "precision mediump float;\n"
          "layout(location = 0) out mediump vec4 fragColor;"
          "void main() {\n"
          "   vec2 v;\n"
          "   uint u = packUnorm2x16(v);\n"
          "   fragColor = vec4(0.0);\n"
          "}\n";
      compile(shaderString);
      ASSERT_EQ(GetParam() < SH_GLSL_410_CORE_OUTPUT, foundInGLSLCode("uint webgl_packUnorm2x16_emu(vec2 v)"));
  }
  
  //Check if UnpackSnorm2x16 Emulation for GLSL < 4.1 compiles correctly.
  TEST_P(PackUnpackTest, UnpackUnorm2x16Emulation)
  {
      const std::string &shaderString =
          "#version 300 es\n"
          "precision mediump float;\n"
          "layout(location = 0) out mediump vec4 fragColor;"
          "void main() {\n"
          "   uint u;\n"
          "   vec2 v=unpackUnorm2x16(u);\n"
          "   fragColor = vec4(0.0);\n"
          "}\n";
      compile(shaderString);
      ASSERT_EQ(GetParam() < SH_GLSL_410_CORE_OUTPUT, foundInGLSLCode("vec2 webgl_unpackUnorm2x16_emu(uint u)"));
  }
  
  //Check if PackHalf2x16 Emulation for GLSL < 4.2 compiles correctly.
  TEST_P(PackUnpackTest, PackHalf2x16Emulation)
  {
      const std::string &shaderString =
          "#version 300 es\n"
          "precision mediump float;\n"
          "layout(location = 0) out mediump vec4 fragColor;"
          "void main() {\n"
          "   vec2 v;\n"
          "   uint u=packHalf2x16(v);\n"
          "   fragColor = vec4(0.0);\n"
          "}\n";
      compile(shaderString);
      ASSERT_EQ(GetParam() < SH_GLSL_420_CORE_OUTPUT, foundInGLSLCode("uint webgl_packHalf2x16_emu(vec2 v)"));
  }
  
  //Check if UnpackHalf2x16 Emulation for GLSL < 4.2 compiles correctly.
  TEST_P(PackUnpackTest, UnpackHalf2x16Emulation)
  {
      const std::string &shaderString =
          "#version 300 es\n"
          "precision mediump float;\n"
          "layout(location = 0) out mediump vec4 fragColor;"
          "void main() {\n"
          "   uint u;\n"
          "   vec2 v=unpackHalf2x16(u);\n"
          "   fragColor = vec4(0.0);\n"
          "}\n";
      compile(shaderString);
      ASSERT_EQ(GetParam() < SH_GLSL_420_CORE_OUTPUT, foundInGLSLCode("vec2 webgl_unpackHalf2x16_emu(uint u)"));
  }
  
  INSTANTIATE_TEST_CASE_P(, PackUnpackTest,
                          testing::Values(SH_GLSL_330_CORE_OUTPUT, SH_GLSL_400_CORE_OUTPUT,
                                          SH_GLSL_410_CORE_OUTPUT, SH_GLSL_420_CORE_OUTPUT,
                                          SH_GLSL_430_CORE_OUTPUT, SH_GLSL_440_CORE_OUTPUT,
                                          SH_GLSL_450_CORE_OUTPUT));
  
  } // namespace
  

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