gls_include.h

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/*! \file
  \brief  A file for all GL Studio files to include.

  \par Copyright Information

  Copyright (c) 2017 by The DiSTI Corporation.<br>
  11301 Corporate Blvd; Suite 100<br>
  Orlando, Florida 32817<br>
  USA<br>
  <br>
  All rights reserved.<br>

  This Software contains proprietary trade secrets of DiSTI and may not be
reproduced, in whole or part, in any form, or by any means of electronic,
mechanical, or otherwise, without the written permission of DiSTI.  Said
permission may be derived through the purchase of applicable DiSTI product
licenses which detail the distribution rights of this content and any
Derivative Works based on this or other copyrighted DiSTI Software.

  NO WARRANTY. THE SOFTWARE IS PROVIDED "AS-IS," WITHOUT WARRANTY OF ANY KIND,
AND ANY USE OF THIS SOFTWARE PRODUCT IS AT YOUR OWN RISK. TO THE MAXIMUM EXTENT
PERMITTED BY APPLICABLE LAW, DISTI AND ITS SUPPLIERS DISCLAIM ALL WARRANTIES
AND CONDITIONS, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
IMPLIED WARRANTIES AND CONDITIONS OF MERCHANTABILITY AND/OR FITNESS FOR A
PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT, WITH REGARD TO THE SOFTWARE.

  LIMITATION OF LIABILITY. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW,
IN NO EVENT SHALL DISTI OR ITS SUPPLIERS BE LIABLE FOR ANY SPECIAL, INCIDENTAL,
INDIRECT, OR CONSEQUENTIAL DAMAGES WHATSOEVER (INCLUDING, WITHOUT LIMITATION,
DAMAGES FOR LOSS OF BUSINESS PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS
INFORMATION, OR ANY OTHER PECUNIARY LOSS) ARISING OUT OF THE USE OF OR
INABILITY TO USE THE SOFTWARE, EVEN IF DISTI HAS BEEN ADVISED OF THE POSSIBILITY
OF SUCH DAMAGES.  DISTI'S ENTIRE LIABILITY AND YOUR EXCLUSIVE REMEDY SHALL NOT
EXCEED FIVE DOLLARS (US$5.00).

  The aforementioned terms and restrictions are governed by the laws of the
State of Florida and the United States of America.

*/

#ifndef INCLUDED_GLS_INCLUDE_H
#define INCLUDED_GLS_INCLUDE_H

#if defined( WIN32 ) && ( defined( GLS_DLL ) || defined( GLS_EXPORT_LIBRARY ) || defined( GLS_IMPORT_LIBRARY ) )
#    if defined( GLS_LIBRARY ) || defined( GLS_EXPORT_LIBRARY )
#        define GLS_EXPORT __declspec( dllexport )
#    else /* GLS_DLL || GLS_IMPORT_LIBRARY */
#        define GLS_EXPORT __declspec( dllimport )
#    endif /* GLS_LIBRARY */
#else
#    define GLS_EXPORT
#endif /* GLS_DLL && WIN32 */

// Define imports and exports for GLS_EDITOR
#if defined( WIN32 ) && ( defined( GLS_EXPORT_EDITOR ) || defined( GLS_IMPORT_EDITOR ) )
#    if defined( GLS_EXPORT_EDITOR )
#        define GLS_EDITOR __declspec( dllexport )
#    else
#        define GLS_EDITOR __declspec( dllimport )
#    endif /* GLS_EXPORT_EDITOR */
#else
#    define GLS_EDITOR
#endif

// Define imports and exports for Packages
#if defined( WIN32 ) && ( defined( GLS_EXPORT_PACKAGES ) || defined( GLS_IMPORT_PACKAGES ) )
#    if defined( GLS_EXPORT_PACKAGES )
#        define GLS_EXPORT_PACKAGE __declspec( dllexport )
#    else
#        define GLS_EXPORT_PACKAGE __declspec( dllimport )
#    endif /* GLS_EXPORT_PACKAGES */
#else
#    define GLS_EXPORT_PACKAGE
#endif

#if defined( GLS_EXPORT_EDITOR ) || defined( GLS_IMPORT_EDITOR )
#    define GLS_EDITOR_CODE
#endif

// Platform macros
#ifdef WIN32
#    define IF_WIN32( win32 ) ( win32 )
#    define IF_WIN32_ELSE( win32, notWin32 ) ( win32 )
#    define IF_NOT_WIN32( notWin32 )
#else
#    define IF_WIN32( win32 )
#    define IF_WIN32_ELSE( win32, notWin32 ) ( notWin32 )
#    define IF_NOT_WIN32( notWin32 ) ( notWin32 )
#endif

#ifdef __APPLE__
#    define IF_APPLE( apple ) ( apple )
#    define IF_APPLE_ELSE( apple, notApple ) ( apple )
#    define IF_NOT_APPLE( notApple )
#else
#    define IF_APPLE( apple )
#    define IF_APPLE_ELSE( apple, notApple ) ( notApple )
#    define IF_NOT_APPLE( notApple ) ( notApple )
#endif

#ifdef LINUX
#    define IF_LINUX( linux ) ( linux )
#    define IF_LINUX_ELSE( linux, notLinux ) ( linux )
#    define IF_NOT_LINUX( notLinux )
#else
#    define IF_LINUX( linux )
#    define IF_LINUX_ELSE( linux, notLinux ) ( notLinux )
#    define IF_NOT_LINUX( notLinux ) ( notLinux )
#endif

// Emit code depending on whether we're in an OpenGL ES build or not.
// Examples:
//    IF_GLES( SetShader() );                             // Calls this function on OpenGL ES only
//    IF_NOT_GLES( DesktopFileChanged() );                // Calls this function on Desktop OpenGL only
//    auto fov = IF_GLES_ELSE( esBufferFOV, desktopFOV ); // Selects an expression to be assigned to the variable fov
//    void MyFunc( IF_GLES_ELSE_TYPE( float, double ) );  // Selects the function parameter's type
#ifdef GLES
#    define IF_GLES( esCode ) ( esCode )
#    define IF_NOT_GLES( nonEsCode )
#    define IF_GLES_ELSE( esCode, nonEsCode ) ( esCode )
#    define IF_GLES_ELSE_TYPE( esType, nonEsType ) esType
#else
#    define IF_GLES( esCode )
#    define IF_NOT_GLES( nonEsCode ) ( nonEsCode )
#    define IF_GLES_ELSE( esCode, nonEsCode ) ( nonEsCode )
#    define IF_GLES_ELSE_TYPE( esType, nonEsType ) nonEsType
#endif

// Debug/release mode macros
#ifdef NDEBUG
#    define IF_DEBUG( notRelease )
#    define IF_RELEASE( release ) ( release )
#    define IF_RELEASE_ELSE( release, notRelease ) ( release )
#else
#    define IF_DEBUG( notRelease ) ( notRelease )
#    define IF_RELEASE( release )
#    define IF_RELEASE_ELSE( release, notRelease ) ( notRelease )
#endif

// Macro for checking bitness (safer macros borrowed from https://www.fluentcpp.com/2019/05/28/better-macros-better-flags/)
#define DISTI_IS_BITNESS( X ) DISTI_IS_BITNESS_PRIVATE_DEFINITION_##X()

// Bitness checks borrowed from https://stackoverflow.com/a/12338526/201787
#if _WIN64 || ( __GNUC__ && ( __x86_64__ || __aarch64__ ) ) || __APPLE__
#    define DISTI_IS_BITNESS_PRIVATE_DEFINITION_64() 1
#    define DISTI_IS_BITNESS_PRIVATE_DEFINITION_32() 0
#elif _WIN32 || __GNUC__
#    define DISTI_IS_BITNESS_PRIVATE_DEFINITION_64() 0
#    define DISTI_IS_BITNESS_PRIVATE_DEFINITION_32() 1
#else
#    error "Unknown bitness!"
#endif
#endif