OpenGL.hpp

 
//
// TGUI - Texus' Graphical User Interface
// Copyright (C) 2012-2024 Bruno Van de Velde (vdv_b@tgui.eu)
//
// This software is provided 'as-is', without any express or implied warranty.
// In no event will the authors be held liable for any damages arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it freely,
// subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented;
// you must not claim that you wrote the original software.
// If you use this software in a product, an acknowledgment
// in the product documentation would be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such,
// and must not be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source distribution.
//
 
 
#ifndef TGUI_OPENGL_HPP
#define TGUI_OPENGL_HPP
 
#include <TGUI/Config.hpp>
 
#if defined(__GNUC__)
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wold-style-cast"
#elif defined (_MSC_VER)
# if defined(__clang__)
# pragma clang diagnostic push
# pragma clang diagnostic ignored "-Wold-style-cast"
# pragma clang diagnostic ignored "-Wlanguage-extension-token"
# endif
#endif
 
#if TGUI_USE_SYSTEM_GLAD
 #if TGUI_HAS_RENDERER_BACKEND_OPENGL3
 #include <glad/gl.h>
 
 #define tgui_gladLoadGL gladLoadGL
 #define TGUI_GLAD_GL_VERSION_3_3 GLAD_GL_VERSION_3_3
 #define TGUI_GLAD_GL_VERSION_4_0 GLAD_GL_VERSION_4_0
 #define TGUI_GLAD_GL_VERSION_4_1 GLAD_GL_VERSION_4_1
 #define TGUI_GLAD_GL_VERSION_4_2 GLAD_GL_VERSION_4_2
 #define TGUI_GLAD_GL_VERSION_4_3 GLAD_GL_VERSION_4_3
 #define TGUI_GLAD_GL_VERSION_4_4 GLAD_GL_VERSION_4_4
 #define TGUI_GLAD_GL_VERSION_4_5 GLAD_GL_VERSION_4_5
 #define TGUI_GLAD_GL_VERSION_4_6 GLAD_GL_VERSION_4_6
 #endif
 
 #if TGUI_HAS_RENDERER_BACKEND_GLES2
 #include <glad/gles2.h>
 
 #define tgui_gladLoadGLES2 gladLoadGLES2
 #define TGUI_GLAD_GL_ES_VERSION_2_0 GLAD_GL_ES_VERSION_2_0
 #define TGUI_GLAD_GL_ES_VERSION_3_0 GLAD_GL_ES_VERSION_3_0
 #define TGUI_GLAD_GL_ES_VERSION_3_1 GLAD_GL_ES_VERSION_3_1
 #define TGUI_GLAD_GL_ES_VERSION_3_2 GLAD_GL_ES_VERSION_3_2
 #endif
#else
 // Include all functions from OpenGL 4.6 and OpenGL ES 3.2
 #include <TGUI/extlibs/glad/gl.h>
#endif
 
#if defined(__GNUC__)
# pragma GCC diagnostic pop
#elif defined (_MSC_VER)
# if defined(__clang__)
# pragma clang diagnostic pop
# endif
#endif
 
#if !TGUI_EXPERIMENTAL_USE_STD_MODULE
 #include <string>
#endif
 
 
#if !defined(NDEBUG)
 #define TGUI_GL_CHECK(expr) do { expr; priv::checkAndLogErrorOpenGL(__FILE__, __LINE__, #expr); } while (false)
#else
 #define TGUI_GL_CHECK(expr) expr
#endif
 
#if !TGUI_BUILD_AS_CXX_MODULE || defined(TGUI_BUILDING_OPENGL_MODULE)
namespace tgui
{
 namespace priv
 {
#if TGUI_BUILD_AS_CXX_MODULE
 TGUI_MODULE_EXPORT
#else
 inline
#endif
#if !defined(NDEBUG) && !defined(TGUI_NO_RUNTIME_WARNINGS)
 void checkAndLogErrorOpenGL(const char* file, unsigned int line, const char* expression)
 {
 GLenum errorCode = glGetError();
 if (errorCode == GL_NO_ERROR)
 return;
 
 const char* error;
 switch (errorCode)
 {
 case GL_INVALID_ENUM: error = "GL_INVALID_ENUM"; break;
 case GL_INVALID_VALUE: error = "GL_INVALID_VALUE"; break;
 case GL_INVALID_OPERATION: error = "GL_INVALID_OPERATION"; break;
 case GL_STACK_OVERFLOW: error = "GL_STACK_OVERFLOW"; break;
 case GL_STACK_UNDERFLOW: error = "GL_STACK_UNDERFLOW"; break;
 case GL_OUT_OF_MEMORY: error = "GL_OUT_OF_MEMORY"; break;
 default: error = "Unknown error"; break;
 }
 
 std::string fileStr = file;
 TGUI_PRINT_WARNING("An internal OpenGL call failed in "
 + fileStr.substr(fileStr.find_last_of("\\/") + 1)
 + "(" + std::to_string(line) + ")."
 + "\nExpression:\n " + expression + "\nError description:\n " + error + "\n");
 }
#else
 void checkAndLogErrorOpenGL(const char*, unsigned int, const char*)
 {
 }
#endif
 }
}
#endif
 
 
#endif // TGUI_OPENGL_HPP