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Finally something that can be used for: * Unit tests * Resource compilation * Benchmarks * ... I also desperately need something similar for Windows (and Mac OS, too).pull/7/head
Vladimír Vondruš
14 years ago
5 changed files with 226 additions and 2 deletions
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/*
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Copyright © 2010, 2011, 2012 Vladimír Vondruš <mosra@centrum.cz> |
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This file is part of Magnum. |
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Magnum is free software: you can redistribute it and/or modify |
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it under the terms of the GNU Lesser General Public License version 3 |
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only, as published by the Free Software Foundation. |
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Magnum 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 Lesser General Public License version 3 for more details. |
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*/ |
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#include "WindowlessGlxApplication.h" |
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#include <Utility/Debug.h> |
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#include "Context.h" |
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#define None 0L // redef Xlib nonsense
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namespace Magnum { namespace Platform { |
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WindowlessGlxApplication::WindowlessGlxApplication(int&, char**) { |
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display = XOpenDisplay(nullptr); |
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/* Check version */ |
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int major, minor; |
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glXQueryVersion(display, &major, &minor); |
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if(major == 1 && minor < 4) { |
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Error() << "WindowlessGlxApplication: GLX version 1.4 or greater is required."; |
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std::exit(1); |
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} |
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/* Choose config */ |
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int configCount = 0; |
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static const int fbAttributes[] = { None }; |
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GLXFBConfig* configs = glXChooseFBConfig(display, DefaultScreen(display), fbAttributes, &configCount); |
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if(!configCount) { |
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Error() << "WindowlessGlxApplication: no supported framebuffer configuration found."; |
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std::exit(1); |
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} |
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GLint contextAttributes[] = { |
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#ifdef MAGNUM_TARGET_GLES |
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GLX_CONTEXT_MAJOR_VERSION_ARB, 2, |
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GLX_CONTEXT_MINOR_VERSION_ARB, 0, |
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GLX_CONTEXT_PROFILE_MASK_ARB, GLX_CONTEXT_ES2_PROFILE_BIT_EXT, |
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#endif |
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0 |
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}; |
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/** @todo Use some extension wrangler for this, not GLEW, as it apparently needs context to create context, yo dawg wtf. */ |
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PFNGLXCREATECONTEXTATTRIBSARBPROC glXCreateContextAttribsARB = (PFNGLXCREATECONTEXTATTRIBSARBPROC) glXGetProcAddress((const GLubyte*)"glXCreateContextAttribsARB"); |
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context = glXCreateContextAttribsARB(display, configs[0], 0, True, contextAttributes); |
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if(!context) { |
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Error() << "WindowlessGlxApplication: cannot create context."; |
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std::exit(1); |
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} |
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/* Create pbuffer */ |
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int pbufferAttributes[] = { |
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GLX_PBUFFER_WIDTH, 32, |
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GLX_PBUFFER_HEIGHT, 32, |
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None |
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}; |
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pbuffer = glXCreatePbuffer(display, configs[0], pbufferAttributes); |
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XFree(configs); |
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/* Set OpenGL context as current */ |
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if(!glXMakeContextCurrent(display, pbuffer, pbuffer, context)) { |
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Error() << "WindowlessGlxApplication: cannot make context current"; |
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std::exit(1); |
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} |
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/* Initialize extension wrangler */ |
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ExtensionWrangler::initialize(ExtensionWrangler::ExperimentalFeatures::Enable); |
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c = new Context; |
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} |
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WindowlessGlxApplication::~WindowlessGlxApplication() { |
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glXMakeCurrent(display, None, nullptr); |
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glXDestroyContext(display, context); |
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} |
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}} |
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#ifndef Magnum_Platform_WindowlessGlxApplication_h |
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#define Magnum_Platform_WindowlessGlxApplication_h |
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/*
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Copyright © 2010, 2011, 2012 Vladimír Vondruš <mosra@centrum.cz> |
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This file is part of Magnum. |
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Magnum is free software: you can redistribute it and/or modify |
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it under the terms of the GNU Lesser General Public License version 3 |
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only, as published by the Free Software Foundation. |
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|
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Magnum 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 Lesser General Public License version 3 for more details. |
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*/ |
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/** @file
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* @brief Class Magnum::Platform::WindowlessGlxApplication |
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*/ |
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#include "Magnum.h" |
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#include <GL/glx.h> |
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#include <X11/Xlib.h> |
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#include <X11/Xutil.h> |
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/* undef Xlib nonsense to avoid conflicts */ |
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#undef None |
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#undef Always |
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#include "AbstractContextHandler.h" |
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namespace Magnum { namespace Platform { |
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/**
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@brief Windowless GLX application |
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@section WindowlessGlxApplication-usage Usage |
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Place your code into exec(). The subclass can be then used directly in |
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`main()` - see convenience macro MAGNUM_WINDOWLESSGLXAPPLICATION_MAIN(). |
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@code |
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class MyApplication: public Magnum::Platform::WindowlessGlxApplication { |
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// implement required methods...
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}; |
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MAGNUM_WINDOWLESSGLXAPPLICATION_MAIN(MyApplication) |
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@endcode |
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*/ |
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class WindowlessGlxApplication { |
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public: |
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/**
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* @brief Constructor |
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* @param argc Count of arguments of `main()` function |
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* @param argv Arguments of `main()` function |
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* |
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* Creates window with double-buffered OpenGL 3.2 core context or |
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* OpenGL ES 2.0 context, if targetting OpenGL ES. |
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*/ |
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WindowlessGlxApplication(int& argc, char** argv); |
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~WindowlessGlxApplication(); |
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/**
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* @brief Execute application |
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* @return Value for returning from `main()`. |
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*/ |
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virtual int exec() = 0; |
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private: |
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Display* display; |
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GLXContext context; |
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GLXPbuffer pbuffer; |
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Context* c; |
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}; |
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/** @hideinitializer
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@brief Entry point for windowless GLX application |
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@param className Class name |
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Can be used as equivalent to the following code to achieve better portability, |
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see @ref portability-applications for more information. |
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@code |
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int main(int argc, char** argv) { |
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className app(argc, argv); |
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return app.exec(); |
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} |
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@endcode |
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When no other application header is included this macro is also aliased to |
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`MAGNUM_APPLICATION_MAIN()`. |
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*/ |
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#define MAGNUM_WINDOWLESSGLXAPPLICATION_MAIN(className) \ |
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int main(int argc, char** argv) { \
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className app(argc, argv); \
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return app.exec(); \
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} |
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#ifndef DOXYGEN_GENERATING_OUTPUT |
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#ifndef MAGNUM_APPLICATION_MAIN |
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#define MAGNUM_APPLICATION_MAIN(className) MAGNUM_WINDOWLESSGLXAPPLICATION_MAIN(className) |
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#else |
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#undef MAGNUM_APPLICATION_MAIN |
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#endif |
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#endif |
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}} |
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#endif |
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