103 lines
2.9 KiB
C++
103 lines
2.9 KiB
C++
/*
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Copyright (C) 2001-2006, William Joseph.
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All Rights Reserved.
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This file is part of GtkRadiant.
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GtkRadiant is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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GtkRadiant is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GtkRadiant; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#pragma once
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#include <cstddef>
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#include <cstring>
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#include "generic/constant.h"
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#include <QOpenGLFunctions_2_0>
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#include "gtkutil/glfont.h"
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/// \brief A module which wraps a runtime-binding of the standard OpenGL functions.
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/// Provides convenience functions for querying availability of extensions, rendering text and error-checking.
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struct OpenGLBinding
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{
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INTEGER_CONSTANT( Version, 2 );
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STRING_CONSTANT( Name, "qgl" );
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/// \brief OpenGL version, extracted from the GL_VERSION string.
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int major_version, minor_version;
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/// \brief Is true if the global shared OpenGL context is valid.
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bool contextValid;
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QOpenGLFunctions_2_0 *funcs;
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OpenGLBinding() : contextValid( false ), funcs( nullptr ){
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}
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/// \brief Asserts that there no OpenGL errors have occurred since the last call to glGetError.
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void ( *assertNoErrors )( const char *file, int line );
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GLFont *m_font; // MUST be set!
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/// \brief Renders \p string at the current raster-position of the current context.
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void drawString( const char* string ) const {
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m_font->printString( string );
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}
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/// \brief Renders \p character at the current raster-position of the current context.
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void drawChar( char character ) const {
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char s[2];
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s[0] = character;
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s[1] = 0;
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drawString( s );
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}
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// ARB_texture_compression
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bool support_ARB_texture_compression;
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bool ARB_texture_compression(){
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return support_ARB_texture_compression;
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}
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// EXT_texture_compression_s3tc
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bool support_EXT_texture_compression_s3tc;
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bool EXT_texture_compression_s3tc(){
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return support_EXT_texture_compression_s3tc;
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}
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};
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#include "modulesystem.h"
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template<typename Type>
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class GlobalModule;
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typedef GlobalModule<OpenGLBinding> GlobalOpenGLModule;
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template<typename Type>
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class GlobalModuleRef;
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typedef GlobalModuleRef<OpenGLBinding> GlobalOpenGLModuleRef;
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inline OpenGLBinding& GlobalOpenGL(){
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return GlobalOpenGLModule::getTable();
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}
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inline QOpenGLFunctions_2_0& gl(){
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return *GlobalOpenGL().funcs;
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}
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#if defined( _DEBUG )
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#define GlobalOpenGL_debugAssertNoErrors() GlobalOpenGL().assertNoErrors( __FILE__, __LINE__ )
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#else
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#define GlobalOpenGL_debugAssertNoErrors()
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#endif
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