OZ++ Class: OpenGLXFBConfiguration |
/****************************************************************************** * * Copyright (c) 2016 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer. * * 2. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * * OpenGLXFBConfiguration.h * *****************************************************************************/ #pragma once #include <oz++/opengl/OpenGLObject.h> namespace OZ { class OpenGLXFBConfiguration : public OpenGLObject { private: Display* display; int numItems; GLXFBConfig* configurations; public: OpenGLXFBConfiguration(Display* disp, int* attributes=NULL) :display(disp), numItems(0), configurations(NULL) { //Default attribute for pixelformat. static int defaultAttributes[]= { //GLX_X_RENDERABLE , True, GLX_DRAWABLE_TYPE , GLX_WINDOW_BIT, GLX_RENDER_TYPE , GLX_RGBA_BIT, GLX_X_VISUAL_TYPE , GLX_TRUE_COLOR, GLX_RED_SIZE , 8, GLX_GREEN_SIZE , 8, GLX_BLUE_SIZE , 8, GLX_ALPHA_SIZE , 8, GLX_DEPTH_SIZE , 24, GLX_STENCIL_SIZE , 8, GLX_DOUBLEBUFFER , True, //GLX_SAMPLE_BUFFERS , 1, //GLX_SAMPLES , 4, None }; if (attributes == NULL) { attributes = defaultAttributes; } //XSync(display, false); int screen = XDefaultScreen(display); configurations = glXChooseFBConfig( display, screen, attributes, &numItems); if (configurations == NULL || numItems <= 0) { throw IException("Failed to glXChooseFBConfig."); } } ~OpenGLXFBConfiguration() { XFree(configurations); configurations = NULL; } GLXFBConfig getConfig(int n = 0) { if (configurations && numItems > 0) { if ( n >= 0 && n <numItems) { return configurations[n]; } else { throw IException("Invalid index parameter."); } } else { throw IException("No valid GLXFBConfig."); } } XVisualInfo* getVisualInfo(int n=0) { GLXFBConfig config = getConfig(n); XVisualInfo* vi = glXGetVisualFromFBConfig(display, config); if (vi == NULL) { throw IException("Failed to glxGetVisualFromFBConfig."); } return vi; } }; }