text: #ifndef Magnum_Shaders_Implementation_CreateCompatibilityShader_h
  #define Magnum_Shaders_Implementation_CreateCompatibilityShader_h
  /*
      This file is part of Magnum.
  
      Copyright © 2010, 2011, 2012, 2013, 2014, 2015
                Vladimír Vondruš <mosra@centrum.cz>
  
      Permission is hereby granted, free of charge, to any person obtaining a
      copy of this software and associated documentation files (the "Software"),
      to deal in the Software without restriction, including without limitation
      the rights to use, copy, modify, merge, publish, distribute, sublicense,
      and/or sell copies of the Software, and to permit persons to whom the
      Software is furnished to do so, subject to the following conditions:
  
      The above copyright notice and this permission notice shall be included
      in all copies or substantial portions of the Software.
  
      THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
      IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
      THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
      FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
      DEALINGS IN THE SOFTWARE.
  */
  
  #include <Corrade/Utility/Resource.h>
  
  #include "Magnum/Context.h"
  #include "Magnum/Extensions.h"
  #include "Magnum/Shader.h"
  
  namespace Magnum { namespace Shaders { namespace Implementation {
  
  inline Shader createCompatibilityShader(const Utility::Resource& rs, Version version, Shader::Type type) {
      Shader shader(version, type);
  
      #ifndef MAGNUM_TARGET_GLES
      if(Context::current()->isExtensionDisabled<Extensions::GL::ARB::explicit_attrib_location>(version))
          shader.addSource("#define DISABLE_GL_ARB_explicit_attrib_location\n");
      if(Context::current()->isExtensionDisabled<Extensions::GL::ARB::shading_language_420pack>(version))
          shader.addSource("#define DISABLE_GL_ARB_shading_language_420pack\n");
      if(Context::current()->isExtensionDisabled<Extensions::GL::ARB::explicit_uniform_location>(version))
          shader.addSource("#define DISABLE_GL_ARB_explicit_uniform_location\n");
      #endif
  
      /* My Android emulator (running on NVidia) doesn't define GL_ES
         preprocessor macro, thus *all* the stock shaders fail to compile */
      /** @todo remove this when Android emulator is sane */
      #ifdef CORRADE_TARGET_ANDROID
      shader.addSource("#ifndef GL_ES\n#define GL_ES 1\n#endif\n");
      #endif
  
      shader.addSource(rs.get("compatibility.glsl"));
      return shader;
  }
  
  }}}
  
  #endif
  