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91 lines
2.9 KiB
91 lines
2.9 KiB
14 years ago
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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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